pinctrl: bcm2835: Clear the event latch register when disabling interrupts

It's possible to hit a race condition if interrupts are generated on a GPIO
pin when the IRQ line in question is being disabled.

If the interrupt is freed, bcm2835_gpio_irq_disable() is called which
disables the event generation sources (edge, level). If an event occurred
between the last disabling of hard IRQs and the write to the event
source registers, a bit would be set in the GPIO event detect register
(GPEDSn) which goes unacknowledged by bcm2835_gpio_irq_handler()
so Linux complains loudly.

There is no per-GPIO mask register, so when disabling GPIO interrupts
write 1 to the relevant bit in GPEDSn to clear out any stale events.

Signed-off-by: Jonathan Bell <jonathan@raspberrypi.org>
Acked-by: Stephen Warren <swarren@wwwdotorg.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

Documentation/ABI/stable/sysfs-driver-w1_ds28ea00

@@ -0,0 +1,6 @@
+What:		/sys/bus/w1/devices/.../w1_seq
+Date:		Apr 2015
+Contact:	Matt Campbell <mattrcampbell@gmail.com>
+Description:	Support for the DS28EA00 chain sequence function
+		see Documentation/w1/slaves/w1_therm for detailed information
+Users:		any user space application which wants to communicate with DS28EA00

Documentation/DMA-API-HOWTO.txt

@@ -25,13 +25,18 @@ physical addresses.  These are the addresses in /proc/iomem.  The physical
 address is not directly useful to a driver; it must use ioremap() to map
 the space and produce a virtual address.
 
-I/O devices use a third kind of address: a "bus address" or "DMA address".
+I/O devices use a third kind of address: a "bus address".  If a device has
-If a device has registers at an MMIO address, or if it performs DMA to read
+registers at an MMIO address, or if it performs DMA to read or write system
-or write system memory, the addresses used by the device are bus addresses.
+memory, the addresses used by the device are bus addresses.  In some
-In some systems, bus addresses are identical to CPU physical addresses, but
+systems, bus addresses are identical to CPU physical addresses, but in
-in general they are not.  IOMMUs and host bridges can produce arbitrary
+general they are not.  IOMMUs and host bridges can produce arbitrary
 mappings between physical and bus addresses.
 
+From a device's point of view, DMA uses the bus address space, but it may
+be restricted to a subset of that space.  For example, even if a system
+supports 64-bit addresses for main memory and PCI BARs, it may use an IOMMU
+so devices only need to use 32-bit DMA addresses.
+
 Here's a picture and some examples:
 
                CPU                  CPU                  Bus
@@ -72,11 +77,11 @@ can use virtual address X to access the buffer, but the device itself
 cannot because DMA doesn't go through the CPU virtual memory system.
 
 In some simple systems, the device can do DMA directly to physical address
-Y.  But in many others, there is IOMMU hardware that translates bus
+Y.  But in many others, there is IOMMU hardware that translates DMA
 addresses to physical addresses, e.g., it translates Z to Y.  This is part
 of the reason for the DMA API: the driver can give a virtual address X to
 an interface like dma_map_single(), which sets up any required IOMMU
-mapping and returns the bus address Z.  The driver then tells the device to
+mapping and returns the DMA address Z.  The driver then tells the device to
 do DMA to Z, and the IOMMU maps it to the buffer at address Y in system
 RAM.
 
@@ -98,7 +103,7 @@ First of all, you should make sure
 #include <linux/dma-mapping.h>
 
 is in your driver, which provides the definition of dma_addr_t.  This type
-can hold any valid DMA or bus address for the platform and should be used
+can hold any valid DMA address for the platform and should be used
 everywhere you hold a DMA address returned from the DMA mapping functions.
 
 			 What memory is DMA'able?
@@ -316,7 +321,7 @@ There are two types of DMA mappings:
   Think of "consistent" as "synchronous" or "coherent".
 
   The current default is to return consistent memory in the low 32
-  bits of the bus space.  However, for future compatibility you should
+  bits of the DMA space.  However, for future compatibility you should
   set the consistent mask even if this default is fine for your
   driver.
 
@@ -403,7 +408,7 @@ dma_alloc_coherent() returns two values: the virtual address which you
 can use to access it from the CPU and dma_handle which you pass to the
 card.
 
-The CPU virtual address and the DMA bus address are both
+The CPU virtual address and the DMA address are both
 guaranteed to be aligned to the smallest PAGE_SIZE order which
 is greater than or equal to the requested size.  This invariant
 exists (for example) to guarantee that if you allocate a chunk
@@ -645,8 +650,8 @@ PLEASE NOTE:  The 'nents' argument to the dma_unmap_sg call must be
               dma_map_sg call.
 
 Every dma_map_{single,sg}() call should have its dma_unmap_{single,sg}()
-counterpart, because the bus address space is a shared resource and
+counterpart, because the DMA address space is a shared resource and
-you could render the machine unusable by consuming all bus addresses.
+you could render the machine unusable by consuming all DMA addresses.
 
 If you need to use the same streaming DMA region multiple times and touch
 the data in between the DMA transfers, the buffer needs to be synced

Documentation/DMA-API.txt

@@ -18,10 +18,10 @@ Part I - dma_ API
 To get the dma_ API, you must #include <linux/dma-mapping.h>.  This
 provides dma_addr_t and the interfaces described below.
 
-A dma_addr_t can hold any valid DMA or bus address for the platform.  It
+A dma_addr_t can hold any valid DMA address for the platform.  It can be
-can be given to a device to use as a DMA source or target.  A CPU cannot
+given to a device to use as a DMA source or target.  A CPU cannot reference
-reference a dma_addr_t directly because there may be translation between
+a dma_addr_t directly because there may be translation between its physical
-its physical address space and the bus address space.
+address space and the DMA address space.
 
 Part Ia - Using large DMA-coherent buffers
 ------------------------------------------
@@ -42,7 +42,7 @@ It returns a pointer to the allocated region (in the processor's virtual
 address space) or NULL if the allocation failed.
 
 It also returns a <dma_handle> which may be cast to an unsigned integer the
-same width as the bus and given to the device as the bus address base of
+same width as the bus and given to the device as the DMA address base of
 the region.
 
 Note: consistent memory can be expensive on some platforms, and the
@@ -193,7 +193,7 @@ dma_map_single(struct device *dev, void *cpu_addr, size_t size,
 		      enum dma_data_direction direction)
 
 Maps a piece of processor virtual memory so it can be accessed by the
-device and returns the bus address of the memory.
+device and returns the DMA address of the memory.
 
 The direction for both APIs may be converted freely by casting.
 However the dma_ API uses a strongly typed enumerator for its
@@ -212,20 +212,20 @@ contiguous piece of memory.  For this reason, memory to be mapped by
 this API should be obtained from sources which guarantee it to be
 physically contiguous (like kmalloc).
 
-Further, the bus address of the memory must be within the
+Further, the DMA address of the memory must be within the
 dma_mask of the device (the dma_mask is a bit mask of the
-addressable region for the device, i.e., if the bus address of
+addressable region for the device, i.e., if the DMA address of
-the memory ANDed with the dma_mask is still equal to the bus
+the memory ANDed with the dma_mask is still equal to the DMA
 address, then the device can perform DMA to the memory).  To
 ensure that the memory allocated by kmalloc is within the dma_mask,
 the driver may specify various platform-dependent flags to restrict
-the bus address range of the allocation (e.g., on x86, GFP_DMA
+the DMA address range of the allocation (e.g., on x86, GFP_DMA
-guarantees to be within the first 16MB of available bus addresses,
+guarantees to be within the first 16MB of available DMA addresses,
 as required by ISA devices).
 
 Note also that the above constraints on physical contiguity and
 dma_mask may not apply if the platform has an IOMMU (a device which
-maps an I/O bus address to a physical memory address).  However, to be
+maps an I/O DMA address to a physical memory address).  However, to be
 portable, device driver writers may *not* assume that such an IOMMU
 exists.
 
@@ -296,7 +296,7 @@ reduce current DMA mapping usage or delay and try again later).
 	dma_map_sg(struct device *dev, struct scatterlist *sg,
 		int nents, enum dma_data_direction direction)
 
-Returns: the number of bus address segments mapped (this may be shorter
+Returns: the number of DMA address segments mapped (this may be shorter
 than <nents> passed in if some elements of the scatter/gather list are
 physically or virtually adjacent and an IOMMU maps them with a single
 entry).
@@ -340,7 +340,7 @@ must be the same as those and passed in to the scatter/gather mapping
 API.
 
 Note: <nents> must be the number you passed in, *not* the number of
-bus address entries returned.
+DMA address entries returned.
 
 void
 dma_sync_single_for_cpu(struct device *dev, dma_addr_t dma_handle, size_t size,
@@ -507,7 +507,7 @@ it's asked for coherent memory for this device.
 phys_addr is the CPU physical address to which the memory is currently
 assigned (this will be ioremapped so the CPU can access the region).
 
-device_addr is the bus address the device needs to be programmed
+device_addr is the DMA address the device needs to be programmed
 with to actually address this memory (this will be handed out as the
 dma_addr_t in dma_alloc_coherent()).
 

Documentation/devicetree/bindings/dma/bcm2835-dma.txt

@@ -48,8 +48,8 @@ Example:
 
 bcm2835_i2s: i2s@7e203000 {
 	compatible = "brcm,bcm2835-i2s";
-	reg = <	0x7e203000 0x20>,
+	reg = <	0x7e203000 0x24>,
-	      < 0x7e101098 0x02>;
+	      < 0x7e101098 0x08>;
 
 	dmas = <&dma 2>,
 	       <&dma 3>;

Documentation/devicetree/bindings/dma/fsl-mxs-dma.txt

@@ -38,7 +38,7 @@ dma_apbx: dma-apbx@80024000 {
 		      80 81 68 69
 		      70 71 72 73
 		      74 75 76 77>;
-	interrupt-names = "auart4-rx", "aurat4-tx", "spdif-tx", "empty",
+	interrupt-names = "auart4-rx", "auart4-tx", "spdif-tx", "empty",
 			  "saif0", "saif1", "i2c0", "i2c1",
 			  "auart0-rx", "auart0-tx", "auart1-rx", "auart1-tx",
 			  "auart2-rx", "auart2-tx", "auart3-rx", "auart3-tx";

Documentation/devicetree/bindings/net/marvell-armada-370-neta.txt

@@ -1,7 +1,7 @@
 * Marvell Armada 370 / Armada XP Ethernet Controller (NETA)
 
 Required properties:
-- compatible: should be "marvell,armada-370-neta".
+- compatible: "marvell,armada-370-neta" or "marvell,armada-xp-neta".
 - reg: address and length of the register set for the device.
 - interrupts: interrupt for the device
 - phy: See ethernet.txt file in the same directory.

Documentation/devicetree/bindings/sound/bcm2835-i2s.txt

@@ -16,8 +16,8 @@ Example:
 
 bcm2835_i2s: i2s@7e203000 {
 	compatible = "brcm,bcm2835-i2s";
-	reg = <0x7e203000 0x20>,
+	reg = <0x7e203000 0x24>,
-	      <0x7e101098 0x02>;
+	      <0x7e101098 0x08>;
 
 	dmas = <&dma 2>,
 	       <&dma 3>;

Documentation/devicetree/bindings/spi/spi_pl022.txt

@@ -4,9 +4,9 @@ Required properties:
 - compatible : "arm,pl022", "arm,primecell"
 - reg : Offset and length of the register set for the device
 - interrupts : Should contain SPI controller interrupt
+- num-cs : total number of chipselects
 
 Optional properties:
-- num-cs : total number of chipselects
 - cs-gpios : should specify GPIOs used for chipselects.
   The gpios will be referred to as reg = <index> in the SPI child nodes.
   If unspecified, a single SPI device without a chip select can be used.

Documentation/hwmon/tmp401

@@ -20,7 +20,7 @@ Supported chips:
     Datasheet: http://focus.ti.com/docs/prod/folders/print/tmp432.html
   * Texas Instruments TMP435
     Prefix: 'tmp435'
-    Addresses scanned: I2C 0x37, 0x48 - 0x4f
+    Addresses scanned: I2C 0x48 - 0x4f
     Datasheet: http://focus.ti.com/docs/prod/folders/print/tmp435.html
 
 Authors:

Documentation/kernel-parameters.txt

@@ -3746,6 +3746,8 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
 					READ_CAPACITY_16 command);
 				f = NO_REPORT_OPCODES (don't use report opcodes
 					command, uas only);
+				g = MAX_SECTORS_240 (don't transfer more than
+					240 sectors at a time, uas only);
 				h = CAPACITY_HEURISTICS (decrease the
 					reported device capacity by one
 					sector if the number is odd);

Documentation/networking/scaling.txt

@@ -282,7 +282,7 @@ following is true:
 
 - The current CPU's queue head counter >= the recorded tail counter
   value in rps_dev_flow[i]
-- The current CPU is unset (equal to RPS_NO_CPU)
+- The current CPU is unset (>= nr_cpu_ids)
 - The current CPU is offline
 
 After this check, the packet is sent to the (possibly updated) current

Documentation/serial/tty.txt

@@ -198,6 +198,9 @@ TTY_IO_ERROR		If set, causes all subsequent userspace read/write
 
 TTY_OTHER_CLOSED	Device is a pty and the other side has closed.
 
+TTY_OTHER_DONE		Device is a pty and the other side has closed and
+			all pending input processing has been completed.
+
 TTY_NO_WRITE_SPLIT	Prevent driver from splitting up writes into
 			smaller chunks.
 

Documentation/video4linux/bcm2835-v4l2.txt

@@ -0,0 +1,60 @@
+
+BCM2835 (aka Raspberry Pi) V4L2 driver
+======================================
+
+1. Copyright
+============
+
+Copyright © 2013 Raspberry Pi (Trading) Ltd.
+
+2. License
+==========
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+3. Quick Start
+==============
+
+You need a version 1.0 or later of v4l2-ctl, available from:
+	git://git.linuxtv.org/v4l-utils.git
+
+$ sudo modprobe bcm2835-v4l2
+
+Turn on the overlay:
+
+$ v4l2-ctl --overlay=1
+
+Turn off the overlay:
+
+$ v4l2-ctl --overlay=0
+
+Set the capture format for video:
+
+$ v4l2-ctl  --set-fmt-video=width=1920,height=1088,pixelformat=4
+
+(Note: 1088 not 1080).
+
+Capture:
+
+$ v4l2-ctl --stream-mmap=3 --stream-count=100 --stream-to=somefile.h264
+
+Stills capture:
+
+$ v4l2-ctl  --set-fmt-video=width=2592,height=1944,pixelformat=3
+$ v4l2-ctl --stream-mmap=3 --stream-count=1 --stream-to=somefile.jpg
+
+List of available formats:
+
+$ v4l2-ctl --list-formats

Documentation/virtual/kvm/devices/s390_flic.txt

@@ -27,6 +27,9 @@ Groups:
     Copies all floating interrupts into a buffer provided by userspace.
     When the buffer is too small it returns -ENOMEM, which is the indication
     for userspace to try again with a bigger buffer.
+    -ENOBUFS is returned when the allocation of a kernelspace buffer has
+    failed.
+    -EFAULT is returned when copying data to userspace failed.
     All interrupts remain pending, i.e. are not deleted from the list of
     currently pending interrupts.
     attr->addr contains the userspace address of the buffer into which all

Documentation/virtual/kvm/mmu.txt

@@ -169,6 +169,10 @@ Shadow pages contain the following information:
     Contains the value of cr4.smep && !cr0.wp for which the page is valid
     (pages for which this is true are different from other pages; see the
     treatment of cr0.wp=0 below).
+  role.smap_andnot_wp:
+    Contains the value of cr4.smap && !cr0.wp for which the page is valid
+    (pages for which this is true are different from other pages; see the
+    treatment of cr0.wp=0 below).
   gfn:
     Either the guest page table containing the translations shadowed by this
     page, or the base page frame for linear translations.  See role.direct.
@@ -344,10 +348,16 @@ on fault type:
 
 (user write faults generate a #PF)
 
-In the first case there is an additional complication if CR4.SMEP is
+In the first case there are two additional complications:
-enabled: since we've turned the page into a kernel page, the kernel may now
+- if CR4.SMEP is enabled: since we've turned the page into a kernel page,
-execute it.  We handle this by also setting spte.nx.  If we get a user
+  the kernel may now execute it.  We handle this by also setting spte.nx.
-fetch or read fault, we'll change spte.u=1 and spte.nx=gpte.nx back.
+  If we get a user fetch or read fault, we'll change spte.u=1 and
+  spte.nx=gpte.nx back.
+- if CR4.SMAP is disabled: since the page has been changed to a kernel
+  page, it can not be reused when CR4.SMAP is enabled. We set
+  CR4.SMAP && !CR0.WP into shadow page's role to avoid this case. Note,
+  here we do not care the case that CR4.SMAP is enabled since KVM will
+  directly inject #PF to guest due to failed permission check.
 
 To prevent an spte that was converted into a kernel page with cr0.wp=0
 from being written by the kernel after cr0.wp has changed to 1, we make

Documentation/w1/slaves/w1_therm

@@ -11,12 +11,14 @@ Author: Evgeniy Polyakov <johnpol@2ka.mipt.ru>
 Description
 -----------
 
-w1_therm provides basic temperature conversion for ds18*20 devices.
+w1_therm provides basic temperature conversion for ds18*20 devices, and the
+ds28ea00 device.
 supported family codes:
 W1_THERM_DS18S20	0x10
 W1_THERM_DS1822		0x22
 W1_THERM_DS18B20	0x28
 W1_THERM_DS1825		0x3B
+W1_THERM_DS28EA00	0x42
 
 Support is provided through the sysfs w1_slave file.  Each open and
 read sequence will initiate a temperature conversion then provide two
@@ -48,3 +50,10 @@ resistor).  The DS18b20 temperature sensor specification lists a
 maximum current draw of 1.5mA and that a 5k pullup resistor is not
 sufficient.  The strong pullup is designed to provide the additional
 current required.
+
+The DS28EA00 provides an additional two pins for implementing a sequence
+detection algorithm.  This feature allows you to determine the physical
+location of the chip in the 1-wire bus without needing pre-existing
+knowledge of the bus ordering.  Support is provided through the sysfs
+w1_seq file.  The file will contain a single line with an integer value
+representing the device index in the bus starting at 0.

Makefile

@@ -1,6 +1,6 @@
 VERSION = 4
 PATCHLEVEL = 0
-SUBLEVEL = 0
+SUBLEVEL = 9
 EXTRAVERSION =
 NAME = Hurr durr I'ma sheep
 

arch/arc/include/asm/atomic.h

@@ -43,6 +43,12 @@ static inline int atomic_##op##_return(int i, atomic_t *v)		\
 {									\
 	unsigned int temp;						\
 									\
+	/*								\
+	 * Explicit full memory barrier needed before/after as		\
+	 * LLOCK/SCOND thmeselves don't provide any such semantics	\
+	 */								\
+	smp_mb();							\
+									\
 	__asm__ __volatile__(						\
 	"1:	llock   %0, [%1]	\n"				\
 	"	" #asm_op " %0, %0, %2	\n"				\
@@ -52,6 +58,8 @@ static inline int atomic_##op##_return(int i, atomic_t *v)		\
 	: "r"(&v->counter), "ir"(i)					\
 	: "cc");							\
 									\
+	smp_mb();							\
+									\
 	return temp;							\
 }
 
@@ -99,12 +107,15 @@ static inline void atomic_##op(int i, atomic_t *v)			\
 	atomic_ops_unlock(flags);					\
 }
 
-#define ATOMIC_OP_RETURN(op, c_op)					\
+#define ATOMIC_OP_RETURN(op, c_op, asm_op)				\
 static inline int atomic_##op##_return(int i, atomic_t *v)		\
 {									\
 	unsigned long flags;						\
 	unsigned long temp;						\
 									\
+	/*								\
+	 * spin lock/unlock provides the needed smp_mb() before/after	\
+	 */								\
 	atomic_ops_lock(flags);						\
 	temp = v->counter;						\
 	temp c_op i;							\
@@ -142,9 +153,19 @@ ATOMIC_OP(and, &=, and)
 #define __atomic_add_unless(v, a, u)					\
 ({									\
 	int c, old;							\
+									\
+	/*								\
+	 * Explicit full memory barrier needed before/after as		\
+	 * LLOCK/SCOND thmeselves don't provide any such semantics	\
+	 */								\
+	smp_mb();							\
+									\
 	c = atomic_read(v);						\
 	while (c != (u) && (old = atomic_cmpxchg((v), c, c + (a))) != c)\
 		c = old;						\
+									\
+	smp_mb();							\
+									\
 	c;								\
 })
 

arch/arc/include/asm/bitops.h

@@ -103,6 +103,12 @@ static inline int test_and_set_bit(unsigned long nr, volatile unsigned long *m)
 	if (__builtin_constant_p(nr))
 		nr &= 0x1f;
 
+	/*
+	 * Explicit full memory barrier needed before/after as
+	 * LLOCK/SCOND themselves don't provide any such semantics
+	 */
+	smp_mb();
+
 	__asm__ __volatile__(
 	"1:	llock   %0, [%2]	\n"
 	"	bset    %1, %0, %3	\n"
@@ -112,6 +118,8 @@ static inline int test_and_set_bit(unsigned long nr, volatile unsigned long *m)
 	: "r"(m), "ir"(nr)
 	: "cc");
 
+	smp_mb();
+
 	return (old & (1 << nr)) != 0;
 }
 
@@ -125,6 +133,8 @@ test_and_clear_bit(unsigned long nr, volatile unsigned long *m)
 	if (__builtin_constant_p(nr))
 		nr &= 0x1f;
 
+	smp_mb();
+
 	__asm__ __volatile__(
 	"1:	llock   %0, [%2]	\n"
 	"	bclr    %1, %0, %3	\n"
@@ -134,6 +144,8 @@ test_and_clear_bit(unsigned long nr, volatile unsigned long *m)
 	: "r"(m), "ir"(nr)
 	: "cc");
 
+	smp_mb();
+
 	return (old & (1 << nr)) != 0;
 }
 
@@ -147,6 +159,8 @@ test_and_change_bit(unsigned long nr, volatile unsigned long *m)
 	if (__builtin_constant_p(nr))
 		nr &= 0x1f;
 
+	smp_mb();
+
 	__asm__ __volatile__(
 	"1:	llock   %0, [%2]	\n"
 	"	bxor    %1, %0, %3	\n"
@@ -156,6 +170,8 @@ test_and_change_bit(unsigned long nr, volatile unsigned long *m)
 	: "r"(m), "ir"(nr)
 	: "cc");
 
+	smp_mb();
+
 	return (old & (1 << nr)) != 0;
 }
 
@@ -235,6 +251,9 @@ static inline int test_and_set_bit(unsigned long nr, volatile unsigned long *m)
 	if (__builtin_constant_p(nr))
 		nr &= 0x1f;
 
+	/*
+	 * spin lock/unlock provide the needed smp_mb() before/after
+	 */
 	bitops_lock(flags);
 
 	old = *m;

arch/arc/include/asm/cmpxchg.h

@@ -10,6 +10,8 @@
 #define __ASM_ARC_CMPXCHG_H
 
 #include <linux/types.h>
+
+#include <asm/barrier.h>
 #include <asm/smp.h>
 
 #ifdef CONFIG_ARC_HAS_LLSC
@@ -19,16 +21,25 @@ __cmpxchg(volatile void *ptr, unsigned long expected, unsigned long new)
 {
 	unsigned long prev;
 
+	/*
+	 * Explicit full memory barrier needed before/after as
+	 * LLOCK/SCOND thmeselves don't provide any such semantics
+	 */
+	smp_mb();
+
 	__asm__ __volatile__(
 	"1:	llock   %0, [%1]	\n"
 	"	brne    %0, %2, 2f	\n"
 	"	scond   %3, [%1]	\n"
 	"	bnz     1b		\n"
 	"2:				\n"
-	: "=&r"(prev)
+	: "=&r"(prev)	/* Early clobber, to prevent reg reuse */
-	: "r"(ptr), "ir"(expected),
+	: "r"(ptr),	/* Not "m": llock only supports reg direct addr mode */
-	  "r"(new) /* can't be "ir". scond can't take limm for "b" */
+	  "ir"(expected),
-	: "cc");
+	  "r"(new)	/* can't be "ir". scond can't take LIMM for "b" */
+	: "cc", "memory"); /* so that gcc knows memory is being written here */
+
+	smp_mb();
 
 	return prev;
 }
@@ -42,6 +53,9 @@ __cmpxchg(volatile void *ptr, unsigned long expected, unsigned long new)
 	int prev;
 	volatile unsigned long *p = ptr;
 
+	/*
+	 * spin lock/unlock provide the needed smp_mb() before/after
+	 */
 	atomic_ops_lock(flags);
 	prev = *p;
 	if (prev == expected)
@@ -77,12 +91,16 @@ static inline unsigned long __xchg(unsigned long val, volatile void *ptr,
 
 	switch (size) {
 	case 4:
+		smp_mb();
+
 		__asm__ __volatile__(
 		"	ex  %0, [%1]	\n"
 		: "+r"(val)
 		: "r"(ptr)
 		: "memory");
 
+		smp_mb();
+
 		return val;
 	}
 	return __xchg_bad_pointer();

arch/arc/include/asm/spinlock.h

@@ -22,24 +22,46 @@ static inline void arch_spin_lock(arch_spinlock_t *lock)
 {
 	unsigned int tmp = __ARCH_SPIN_LOCK_LOCKED__;
 
+	/*
+	 * This smp_mb() is technically superfluous, we only need the one
+	 * after the lock for providing the ACQUIRE semantics.
+	 * However doing the "right" thing was regressing hackbench
+	 * so keeping this, pending further investigation
+	 */
+	smp_mb();
+
 	__asm__ __volatile__(
 	"1:	ex  %0, [%1]		\n"
 	"	breq  %0, %2, 1b	\n"
 	: "+&r" (tmp)
 	: "r"(&(lock->slock)), "ir"(__ARCH_SPIN_LOCK_LOCKED__)
 	: "memory");
+
+	/*
+	 * ACQUIRE barrier to ensure load/store after taking the lock
+	 * don't "bleed-up" out of the critical section (leak-in is allowed)
+	 * http://www.spinics.net/lists/kernel/msg2010409.html
+	 *
+	 * ARCv2 only has load-load, store-store and all-all barrier
+	 * thus need the full all-all barrier
+	 */
+	smp_mb();
 }
 
 static inline int arch_spin_trylock(arch_spinlock_t *lock)
 {
 	unsigned int tmp = __ARCH_SPIN_LOCK_LOCKED__;
 
+	smp_mb();
+
 	__asm__ __volatile__(
 	"1:	ex  %0, [%1]		\n"
 	: "+r" (tmp)
 	: "r"(&(lock->slock))
 	: "memory");
 
+	smp_mb();
+
 	return (tmp == __ARCH_SPIN_LOCK_UNLOCKED__);
 }
 
@@ -47,12 +69,22 @@ static inline void arch_spin_unlock(arch_spinlock_t *lock)
 {
 	unsigned int tmp = __ARCH_SPIN_LOCK_UNLOCKED__;
 
+	/*
+	 * RELEASE barrier: given the instructions avail on ARCv2, full barrier
+	 * is the only option
+	 */
+	smp_mb();
+
 	__asm__ __volatile__(
 	"	ex  %0, [%1]		\n"
 	: "+r" (tmp)
 	: "r"(&(lock->slock))
 	: "memory");
 
+	/*
+	 * superfluous, but keeping for now - see pairing version in
+	 * arch_spin_lock above
+	 */
 	smp_mb();
 }
 

arch/arm/Kconfig

@@ -369,6 +369,23 @@ config ARCH_AT91
 	  This enables support for systems based on Atmel
 	  AT91RM9200, AT91SAM9 and SAMA5 processors.
 
+config ARCH_BCM2708
+	bool "Broadcom BCM2708 family"
+	select CPU_V6
+	select ARM_AMBA
+	select HAVE_SCHED_CLOCK
+	select NEED_MACH_GPIO_H
+	select NEED_MACH_MEMORY_H
+	select COMMON_CLK
+	select ARCH_HAS_CPUFREQ
+	select GENERIC_CLOCKEVENTS
+	select ARM_ERRATA_411920
+	select MACH_BCM2708
+	select VC4
+	select FIQ
+	help
+	  This enables support for Broadcom BCM2708 boards.
+
 config ARCH_CLPS711X
 	bool "Cirrus Logic CLPS711x/EP721x/EP731x-based"
 	select ARCH_REQUIRE_GPIOLIB
@@ -777,6 +794,26 @@ config ARCH_OMAP1
 	help
 	  Support for older TI OMAP1 (omap7xx, omap15xx or omap16xx)
 
+config ARCH_BCM2709
+	bool "Broadcom BCM2709 family"
+	select ARCH_HAS_BARRIERS if SMP
+	select CPU_V7
+	select HAVE_SMP
+	select ARM_AMBA
+	select MIGHT_HAVE_CACHE_L2X0
+	select HAVE_SCHED_CLOCK
+	select NEED_MACH_MEMORY_H
+	select NEED_MACH_IO_H
+	select COMMON_CLK
+	select ARCH_HAS_CPUFREQ
+	select GENERIC_CLOCKEVENTS
+	select MACH_BCM2709
+	select VC4
+	select FIQ
+#	select ZONE_DMA
+	help
+	  This enables support for Broadcom BCM2709 boards.
+
 endchoice
 
 menu "Multiple platform selection"
@@ -967,6 +1004,8 @@ source "arch/arm/plat-versatile/Kconfig"
 source "arch/arm/mach-vt8500/Kconfig"
 
 source "arch/arm/mach-w90x900/Kconfig"
+source "arch/arm/mach-bcm2708/Kconfig"
+source "arch/arm/mach-bcm2709/Kconfig"
 
 source "arch/arm/mach-zynq/Kconfig"
 

arch/arm/Kconfig.debug

@@ -1209,6 +1209,14 @@ choice
 		  options; the platform specific options are deprecated
 		  and will be soon removed.
 
+	config DEBUG_BCM2708_UART0
+		bool "Broadcom BCM2708 UART0 (PL011)"
+		depends on MACH_BCM2708
+		help
+		  Say Y here if you want the debug print routines to direct
+		  their output to UART 0. The port must have been initialised
+		  by the boot-loader before use.
+
 endchoice
 
 config DEBUG_AT91_UART

arch/arm/Makefile

@@ -146,6 +146,8 @@ textofs-$(CONFIG_ARCH_AXXIA) := 0x00308000
 machine-$(CONFIG_ARCH_AT91)		+= at91
 machine-$(CONFIG_ARCH_AXXIA)		+= axxia
 machine-$(CONFIG_ARCH_BCM)		+= bcm
+machine-$(CONFIG_ARCH_BCM2708)		+= bcm2708
+machine-$(CONFIG_ARCH_BCM2709)		+= bcm2709
 machine-$(CONFIG_ARCH_BERLIN)		+= berlin
 machine-$(CONFIG_ARCH_CLPS711X)		+= clps711x
 machine-$(CONFIG_ARCH_CNS3XXX)		+= cns3xxx

arch/arm/boot/dts/Makefile

@@ -1,5 +1,21 @@
 ifeq ($(CONFIG_OF),y)
 
+dtb-$(CONFIG_BCM2708_DT) += bcm2708-rpi-b.dtb
+dtb-$(CONFIG_BCM2708_DT) += bcm2708-rpi-b-plus.dtb
+dtb-$(CONFIG_BCM2708_DT) += bcm2708-rpi-cm.dtb
+dtb-$(CONFIG_BCM2709_DT) += bcm2709-rpi-2-b.dtb
+
+# Raspberry Pi
+ifeq ($(CONFIG_BCM2708_DT),y)
+   RPI_DT_OVERLAYS=y
+endif
+ifeq ($(CONFIG_BCM2709_DT),y)
+   RPI_DT_OVERLAYS=y
+endif
+ifeq ($(CONFIG_ARCH_BCM2835),y)
+   RPI_DT_OVERLAYS=y
+endif
+
 dtb-$(CONFIG_MACH_ASM9260) += \
 	alphascale-asm9260-devkit.dtb
 # Keep at91 dtb files sorted alphabetically for each SoC
@@ -215,7 +231,7 @@ dtb-$(CONFIG_SOC_IMX25) += \
 	imx25-eukrea-mbimxsd25-baseboard-dvi-vga.dtb \
 	imx25-karo-tx25.dtb \
 	imx25-pdk.dtb
-dtb-$(CONFIG_SOC_IMX31) += \
+dtb-$(CONFIG_SOC_IMX27) += \
 	imx27-apf27.dtb \
 	imx27-apf27dev.dtb \
 	imx27-eukrea-mbimxsd27-baseboard.dtb \
@@ -645,7 +661,18 @@ dtb-$(CONFIG_ARCH_MEDIATEK) += \
 	mt6592-evb.dtb \
 	mt8127-moose.dtb \
 	mt8135-evbp1.dtb
+
+targets += dtbs dtbs_install
+targets += $(dtb-y)
+
 endif
 
 always		:= $(dtb-y)
 clean-files	:= *.dtb
+
+# Enable fixups to support overlays on BCM2708 platforms
+ifeq ($(RPI_DT_OVERLAYS),y)
+	DTC_FLAGS ?= -@
+endif
+
+subdir-y  += overlays

arch/arm/boot/dts/am335x-bone-common.dtsi

@@ -223,6 +223,25 @@
 /include/ "tps65217.dtsi"
 
 &tps {
+	/*
+	 * Configure pmic to enter OFF-state instead of SLEEP-state ("RTC-only
+	 * mode") at poweroff.  Most BeagleBone versions do not support RTC-only
+	 * mode and risk hardware damage if this mode is entered.
+	 *
+	 * For details, see linux-omap mailing list May 2015 thread
+	 *	[PATCH] ARM: dts: am335x-bone* enable pmic-shutdown-controller
+	 * In particular, messages:
+	 *	http://www.spinics.net/lists/linux-omap/msg118585.html
+	 *	http://www.spinics.net/lists/linux-omap/msg118615.html
+	 *
+	 * You can override this later with
+	 *	&tps {  /delete-property/ ti,pmic-shutdown-controller;  }
+	 * if you want to use RTC-only mode and made sure you are not affected
+	 * by the hardware problems. (Tip: double-check by performing a current
+	 * measurement after shutdown: it should be less than 1 mA.)
+	 */
+	ti,pmic-shutdown-controller;
+
 	regulators {
 		dcdc1_reg: regulator@0 {
 			regulator-name = "vdds_dpr";

arch/arm/boot/dts/armada-370-xp.dtsi

@@ -265,7 +265,6 @@
 			};
 
 			eth0: ethernet@70000 {
-				compatible = "marvell,armada-370-neta";
 				reg = <0x70000 0x4000>;
 				interrupts = <8>;
 				clocks = <&gateclk 4>;
@@ -281,7 +280,6 @@
 			};
 
 			eth1: ethernet@74000 {
-				compatible = "marvell,armada-370-neta";
 				reg = <0x74000 0x4000>;
 				interrupts = <10>;
 				clocks = <&gateclk 3>;

arch/arm/boot/dts/armada-370.dtsi

@@ -306,6 +306,14 @@
 					dmacap,memset;
 				};
 			};
+
+			ethernet@70000 {
+				compatible = "marvell,armada-370-neta";
+			};
+
+			ethernet@74000 {
+				compatible = "marvell,armada-370-neta";
+			};
 		};
 	};
 };

arch/arm/boot/dts/armada-xp-mv78260.dtsi

@@ -319,7 +319,7 @@
 			};
 
 			eth3: ethernet@34000 {
-				compatible = "marvell,armada-370-neta";
+				compatible = "marvell,armada-xp-neta";
 				reg = <0x34000 0x4000>;
 				interrupts = <14>;
 				clocks = <&gateclk 1>;

arch/arm/boot/dts/armada-xp-mv78460.dtsi

@@ -357,7 +357,7 @@
 			};
 
 			eth3: ethernet@34000 {
-				compatible = "marvell,armada-370-neta";
+				compatible = "marvell,armada-xp-neta";
 				reg = <0x34000 0x4000>;
 				interrupts = <14>;
 				clocks = <&gateclk 1>;

arch/arm/boot/dts/armada-xp-openblocks-ax3-4.dts

@@ -105,6 +105,10 @@
 		};
 
 		internal-regs {
+			rtc@10300 {
+				/* No crystal connected to the internal RTC */
+				status = "disabled";
+			};
 			serial@12000 {
 				status = "okay";
 			};

arch/arm/boot/dts/armada-xp.dtsi

@@ -175,7 +175,7 @@
 			};
 
 			eth2: ethernet@30000 {
-				compatible = "marvell,armada-370-neta";
+				compatible = "marvell,armada-xp-neta";
 				reg = <0x30000 0x4000>;
 				interrupts = <12>;
 				clocks = <&gateclk 2>;
@@ -218,6 +218,14 @@
 				};
 			};
 
+			ethernet@70000 {
+				compatible = "marvell,armada-xp-neta";
+			};
+
+			ethernet@74000 {
+				compatible = "marvell,armada-xp-neta";
+			};
+
 			xor@f0900 {
 				compatible = "marvell,orion-xor";
 				reg = <0xF0900 0x100

arch/arm/boot/dts/at91-sama5d3_xplained.dts

@@ -167,7 +167,13 @@
 
 			macb1: ethernet@f802c000 {
 				phy-mode = "rmii";
+				#address-cells = <1>;
+				#size-cells = <0>;
 				status = "okay";
+
+				ethernet-phy@1 {
+					reg = <0x1>;
+				};
 			};
 
 			dbgu: serial@ffffee00 {

arch/arm/boot/dts/bcm2708-rpi-b-plus.dts

@@ -0,0 +1,129 @@
+/dts-v1/;
+
+/include/ "bcm2708.dtsi"
+
+/ {
+	compatible = "brcm,bcm2708";
+	model = "Raspberry Pi Model B+";
+};
+
+&gpio {
+	spi0_pins: spi0_pins {
+		brcm,pins = <7 8 9 10 11>;
+		brcm,function = <4>; /* alt0 */
+	};
+
+	i2c0_pins: i2c0 {
+		brcm,pins = <0 1>;
+		brcm,function = <4>;
+	};
+
+	i2c1_pins: i2c1 {
+		brcm,pins = <2 3>;
+		brcm,function = <4>;
+	};
+
+	i2s_pins: i2s {
+		brcm,pins = <18 19 20 21>;
+		brcm,function = <4>; /* alt0 */
+	};
+};
+
+&mmc {
+	status = "okay";
+	bus-width = <4>;
+};
+
+&fb {
+	status = "okay";
+};
+
+&uart0 {
+	status = "okay";
+};
+
+&spi0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&spi0_pins>;
+
+	spidev@0{
+		compatible = "spidev";
+		reg = <0>;	/* CE0 */
+		#address-cells = <1>;
+		#size-cells = <0>;
+		spi-max-frequency = <500000>;
+	};
+
+	spidev@1{
+		compatible = "spidev";
+		reg = <1>;	/* CE1 */
+		#address-cells = <1>;
+		#size-cells = <0>;
+		spi-max-frequency = <500000>;
+	};
+};
+
+&i2c0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&i2c0_pins>;
+	clock-frequency = <100000>;
+};
+
+&i2c1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&i2c1_pins>;
+	clock-frequency = <100000>;
+};
+
+&i2c2 {
+	clock-frequency = <100000>;
+};
+
+&i2s {
+	#sound-dai-cells = <0>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&i2s_pins>;
+};
+
+&leds {
+	act_led: act {
+		label = "led0";
+		linux,default-trigger = "mmc0";
+		gpios = <&gpio 47 0>;
+	};
+
+	pwr_led: pwr {
+		label = "led1";
+		linux,default-trigger = "input";
+		gpios = <&gpio 35 0>;
+	};
+};
+
+/ {
+	__overrides__ {
+		uart0 = <&uart0>,"status";
+		uart0_clkrate = <&clk_uart0>,"clock-frequency:0";
+		i2s = <&i2s>,"status";
+		spi = <&spi0>,"status";
+		i2c0 = <&i2c0>,"status";
+		i2c1 = <&i2c1>,"status";
+		i2c2_iknowwhatimdoing = <&i2c2>,"status";
+		i2c0_baudrate = <&i2c0>,"clock-frequency:0";
+		i2c1_baudrate = <&i2c1>,"clock-frequency:0";
+		i2c2_baudrate = <&i2c2>,"clock-frequency:0";
+		core_freq = <&clk_core>,"clock-frequency:0";
+		uart1_clkrate = <&uart1>,"clock-frequency:0";
+
+		act_led_gpio = <&act_led>,"gpios:4";
+		act_led_activelow = <&act_led>,"gpios:8";
+		act_led_trigger = <&act_led>,"linux,default-trigger";
+
+		pwr_led_gpio = <&pwr_led>,"gpios:4";
+		pwr_led_activelow = <&pwr_led>,"gpios:8";
+		pwr_led_trigger = <&pwr_led>,"linux,default-trigger";
+
+		audio = <&audio>,"status";
+		watchdog = <&watchdog>,"status";
+		random = <&random>,"status";
+	};
+};

arch/arm/boot/dts/bcm2708-rpi-b.dts

@@ -0,0 +1,119 @@
+/dts-v1/;
+
+/include/ "bcm2708.dtsi"
+
+/ {
+	compatible = "brcm,bcm2708";
+	model = "Raspberry Pi Model B";
+};
+
+&gpio {
+	spi0_pins: spi0_pins {
+		brcm,pins = <7 8 9 10 11>;
+		brcm,function = <4>; /* alt0 */
+	};
+
+	i2c0_pins: i2c0 {
+		brcm,pins = <0 1>;
+		brcm,function = <4>;
+	};
+
+	i2c1_pins: i2c1 {
+		brcm,pins = <2 3>;
+		brcm,function = <4>;
+	};
+
+	i2s_pins: i2s {
+		brcm,pins = <28 29 30 31>;
+		brcm,function = <6>; /* alt2 */
+	};
+};
+
+&mmc {
+	status = "okay";
+	bus-width = <4>;
+};
+
+&fb {
+	status = "okay";
+};
+
+&uart0 {
+	status = "okay";
+};
+
+&spi0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&spi0_pins>;
+
+	spidev@0{
+		compatible = "spidev";
+		reg = <0>;	/* CE0 */
+		#address-cells = <1>;
+		#size-cells = <0>;
+		spi-max-frequency = <500000>;
+	};
+
+	spidev@1{
+		compatible = "spidev";
+		reg = <1>;	/* CE1 */
+		#address-cells = <1>;
+		#size-cells = <0>;
+		spi-max-frequency = <500000>;
+	};
+};
+
+&i2c0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&i2c0_pins>;
+	clock-frequency = <100000>;
+};
+
+&i2c1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&i2c1_pins>;
+	clock-frequency = <100000>;
+};
+
+&i2c2 {
+	clock-frequency = <100000>;
+};
+
+&i2s {
+	#sound-dai-cells = <0>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&i2s_pins>;
+};
+
+&leds {
+	act_led: act {
+		label = "led0";
+		linux,default-trigger = "mmc0";
+		gpios = <&gpio 16 1>;
+	};
+};
+
+/ {
+	__overrides__ {
+		uart0 = <&uart0>,"status";
+		uart0_clkrate = <&clk_uart0>,"clock-frequency:0";
+		i2s = <&i2s>,"status";
+		spi = <&spi0>,"status";
+		i2c0 = <&i2c0>,"status";
+		i2c1 = <&i2c1>,"status";
+		i2c2_iknowwhatimdoing = <&i2c2>,"status";
+		i2c0_baudrate = <&i2c0>,"clock-frequency:0";
+		i2c1_baudrate = <&i2c1>,"clock-frequency:0";
+		i2c2_baudrate = <&i2c2>,"clock-frequency:0";
+		core_freq = <&clk_core>,"clock-frequency:0";
+		uart1_clkrate = <&uart1>,"clock-frequency:0";
+
+		act_led_gpio = <&act_led>,"gpios:4";
+		act_led_activelow = <&act_led>,"gpios:8";
+		act_led_trigger = <&act_led>,"linux,default-trigger";
+
+		audio = <&audio>,"status";
+		watchdog = <&watchdog>,"status";
+		random = <&random>,"status";
+	};
+};

arch/arm/boot/dts/bcm2708-rpi-cm.dts

@@ -0,0 +1,93 @@
+/dts-v1/;
+
+/include/ "bcm2708-rpi-cm.dtsi"
+
+/ {
+	model = "Raspberry Pi Compute Module";
+};
+
+&uart0 {
+	status = "okay";
+};
+
+&gpio {
+	spi0_pins: spi0_pins {
+		brcm,pins = <7 8 9 10 11>;
+		brcm,function = <4>; /* alt0 */
+	};
+
+	i2c0_pins: i2c0 {
+		brcm,pins = <0 1>;
+		brcm,function = <4>;
+	};
+
+	i2c1_pins: i2c1 {
+		brcm,pins = <2 3>;
+		brcm,function = <4>;
+	};
+
+	i2s_pins: i2s {
+		brcm,pins = <18 19 20 21>;
+		brcm,function = <4>; /* alt0 */
+	};
+};
+
+&spi0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&spi0_pins>;
+
+	spidev@0{
+		compatible = "spidev";
+		reg = <0>;	/* CE0 */
+		#address-cells = <1>;
+		#size-cells = <0>;
+		spi-max-frequency = <500000>;
+	};
+
+	spidev@1{
+		compatible = "spidev";
+		reg = <1>;	/* CE1 */
+		#address-cells = <1>;
+		#size-cells = <0>;
+		spi-max-frequency = <500000>;
+	};
+};
+
+&i2c0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&i2c0_pins>;
+	clock-frequency = <100000>;
+};
+
+&i2c1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&i2c1_pins>;
+	clock-frequency = <100000>;
+};
+
+&i2c2 {
+	clock-frequency = <100000>;
+};
+
+&i2s {
+	#sound-dai-cells = <0>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&i2s_pins>;
+};
+
+/ {
+	__overrides__ {
+		uart0 = <&uart0>,"status";
+		uart0_clkrate = <&clk_uart0>,"clock-frequency:0";
+		i2s = <&i2s>,"status";
+		spi = <&spi0>,"status";
+		i2c0 = <&i2c0>,"status";
+		i2c1 = <&i2c1>,"status";
+		i2c2_iknowwhatimdoing = <&i2c2>,"status";
+		i2c0_baudrate = <&i2c0>,"clock-frequency:0";
+		i2c1_baudrate = <&i2c1>,"clock-frequency:0";
+		i2c2_baudrate = <&i2c2>,"clock-frequency:0";
+		core_freq = <&clk_core>,"clock-frequency:0";
+		uart1_clkrate = <&uart1>,"clock-frequency:0";
+	};
+};

arch/arm/boot/dts/bcm2708-rpi-cm.dtsi

@@ -0,0 +1,30 @@
+/include/ "bcm2708.dtsi"
+
+&leds {
+	act_led: act {
+		label = "led0";
+		linux,default-trigger = "mmc0";
+		gpios = <&gpio 47 0>;
+	};
+};
+
+&mmc {
+	status = "okay";
+	bus-width = <4>;
+};
+
+&fb {
+	status = "okay";
+};
+
+/ {
+	__overrides__ {
+		act_led_gpio = <&act_led>,"gpios:4";
+		act_led_activelow = <&act_led>,"gpios:8";
+		act_led_trigger = <&act_led>,"linux,default-trigger";
+
+		audio = <&audio>,"status";
+		watchdog = <&watchdog>,"status";
+		random = <&random>,"status";
+	};
+};

arch/arm/boot/dts/bcm2708.dtsi

@@ -0,0 +1,19 @@
+/include/ "bcm2708_common.dtsi"
+
+/ {
+	compatible = "brcm,bcm2708";
+	model = "BCM2708";
+
+	chosen {
+		/* No padding required - the boot loader can do that. */
+		bootargs = "";
+	};
+
+	soc {
+		ranges = <0x7e000000 0x20000000 0x01000000>;
+
+		arm-pmu {
+			compatible = "arm,arm1176-pmu";
+		};
+	};
+};

arch/arm/boot/dts/bcm2708_common.dtsi

@@ -0,0 +1,275 @@
+/include/ "skeleton.dtsi"
+
+/ {
+	interrupt-parent = <&intc>;
+
+	aliases {
+		audio = &audio;
+		sound = &sound;
+		soc = &soc;
+		dma = &dma;
+		intc = &intc;
+		watchdog = &watchdog;
+		random = &random;
+		mailbox = &mailbox;
+		gpio = &gpio;
+		uart0 = &uart0;
+		i2s  = &i2s;
+		spi0 = &spi0;
+		i2c0 = &i2c0;
+		uart1 = &uart1;
+		mmc = &mmc;
+		i2c1 = &i2c1;
+		i2c2 = &i2c2;
+		usb = &usb;
+		leds = &leds;
+		fb = &fb;
+		vchiq = &vchiq;
+		thermal = &thermal;
+		clocks = &clocks;
+	};
+
+	/* Onboard audio */
+	audio: audio {
+		compatible = "brcm,bcm2835-audio";
+		brcm,pwm-channels = <8>;
+		status = "disabled";
+	};
+
+	/* External sound card */
+	sound: sound {
+	};
+
+	soc: soc {
+		compatible = "simple-bus";
+		#address-cells = <1>;
+		#size-cells = <1>;
+
+		dma: dma@7e007000 {
+			compatible = "brcm,bcm2835-dma";
+			reg = <0x7e007000 0xf00>;
+			interrupts = <1 16>,
+				     <1 17>,
+				     <1 18>,
+				     <1 19>,
+				     <1 20>,
+				     <1 21>,
+				     <1 22>,
+				     <1 23>,
+				     <1 24>,
+				     <1 25>,
+				     <1 26>,
+				     <1 27>,
+				     <1 28>;
+
+			#dma-cells = <1>;
+			brcm,dma-channel-mask = <0x7f35>;
+		};
+
+		intc: interrupt-controller {
+			compatible = "brcm,bcm2708-armctrl-ic";
+			reg = <0x7e00b200 0x200>;
+			interrupt-controller;
+			#interrupt-cells = <2>;
+		};
+
+		mailbox: mailbox@7e00b800 {
+			compatible = "brcm,bcm2708-vcio";
+			reg = <0x7e00b880 0x40>;
+			interrupts = <0 1>;
+		};
+
+		watchdog: watchdog@7e100000 {
+			compatible = "brcm,bcm2835-pm-wdt";
+			reg = <0x7e100000 0x28>;
+			status = "disabled";
+		};
+
+		random: rng@7e104000 {
+			compatible = "brcm,bcm2835-rng";
+			reg = <0x7e104000 0x10>;
+			status = "disabled";
+		};
+
+		gpio: gpio@7e200000 {
+			compatible = "brcm,bcm2835-gpio";
+			reg = <0x7e200000 0xb4>;
+			interrupts = <2 17>, <2 18>;
+
+			gpio-controller;
+			#gpio-cells = <2>;
+
+			interrupt-controller;
+			#interrupt-cells = <2>;
+		};
+
+		uart0: uart@7e201000 {
+			compatible = "arm,pl011", "arm,primecell";
+			reg = <0x7e201000 0x1000>;
+			interrupts = <2 25>;
+			clocks = <&clk_uart0 &clk_apb_p>;
+			clock-names = "uartclk","apb_pclk";
+			arm,primecell-periphid = <0x00241011>; // For an explanation, see
+			// https://github.com/raspberrypi/linux/commit/13731d862cf5219216533a3b0de052cee4cc5038
+			status = "disabled";
+		};
+
+		i2s: i2s@7e203000 {
+			compatible = "brcm,bcm2708-i2s";
+			reg = <0x7e203000 0x24>,
+			      <0x7e101098 0x08>;
+
+			//dmas = <&dma 2>,
+			//       <&dma 3>;
+			dma-names = "tx", "rx";
+			status = "disabled";
+		};
+
+		spi0: spi@7e204000 {
+			compatible = "brcm,bcm2835-spi";
+			reg = <0x7e204000 0x1000>;
+			interrupts = <2 22>;
+			clocks = <&clk_core>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "disabled";
+			/* the chipselects used - <0> means native GPIO
+			 * add more gpios if necessary as <&gpio 6 1>
+			 * (but do not forget to make them output!)
+			 */
+			cs-gpios = <0>, <0>;
+		};
+
+		i2c0: i2c@7e205000 {
+			compatible = "brcm,bcm2708-i2c";
+			reg = <0x7e205000 0x1000>;
+			interrupts = <2 21>;
+			clocks = <&clk_i2c>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "disabled";
+		};
+
+		uart1: uart@7e215040 {
+			compatible = "brcm,bcm2835-aux-uart", "ns16550";
+			reg = <0x7e215040 0x40>;
+			interrupts = <1 29>;
+			clock-frequency = <500000000>;
+			reg-shift = <2>;
+			no-loopback-test;
+			status = "disabled";
+	        };
+
+		mmc: mmc@7e300000 {
+			compatible = "brcm,bcm2835-mmc";
+			reg = <0x7e300000 0x100>;
+			interrupts = <2 30>;
+			clocks = <&clk_mmc>;
+			dmas = <&dma 11>,
+			       <&dma 11>;
+			dma-names = "tx", "rx";
+			status = "disabled";
+		};
+
+		i2c1: i2c@7e804000 {
+			compatible = "brcm,bcm2708-i2c";
+			reg = <0x7e804000 0x1000>;
+			interrupts = <2 21>;
+			clocks = <&clk_i2c>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "disabled";
+		};
+
+		i2c2: i2c@7e805000 {
+			// Beware - this is shared with the HDMI module.
+			// Careless use may break (really) your display.
+			// Caveat emptor.
+			compatible = "brcm,bcm2708-i2c";
+			reg = <0x7e805000 0x1000>;
+			interrupts = <2 21>;
+			clocks = <&clk_i2c>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "disabled";
+		};
+
+		usb: usb@7e980000 {
+			compatible = "brcm,bcm2708-usb";
+			reg = <0x7e980000 0x10000>,
+			      <0x7e006000 0x1000>;
+			interrupts = <2 0>,
+				     <1 9>;
+		};
+
+		leds: leds {
+			compatible = "gpio-leds";
+		};
+
+		fb: fb {
+			compatible = "brcm,bcm2708-fb";
+			status = "disabled";
+		};
+
+		vchiq: vchiq {
+			compatible = "brcm,bcm2835-vchiq";
+			reg = <0x7e00b840 0xf>;
+			interrupts = <0 2>;
+			cache-line-size = <32>;
+		};
+
+		thermal: thermal {
+			compatible = "brcm,bcm2835-thermal";
+		};
+	};
+
+	clocks: clocks {
+		compatible = "simple-bus";
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		clk_mmc: clock@0 {
+			compatible = "fixed-clock";
+			reg = <0>;
+			#clock-cells = <0>;
+			clock-output-names = "mmc";
+			clock-frequency = <250000000>;
+		};
+
+		clk_i2c: clock@1 {
+			compatible = "fixed-clock";
+			reg = <1>;
+			#clock-cells = <0>;
+			clock-output-names = "i2c";
+			clock-frequency = <250000000>;
+		};
+
+		clk_core: clock@2 {
+			compatible = "fixed-clock";
+			reg = <2>;
+			#clock-cells = <0>;
+			clock-output-names = "core";
+			clock-frequency = <250000000>;
+		};
+
+		clk_uart0: clock@3 {
+			compatible = "fixed-clock";
+			reg = <3>;
+			#clock-cells = <0>;
+			clock-output-names = "uart0_pclk";
+			clock-frequency = <3000000>;
+		};
+
+		clk_apb_p: clock@4 {
+			compatible = "fixed-clock";
+			reg = <4>;
+			#clock-cells = <0>;
+			clock-output-names = "apb_pclk";
+			clock-frequency = <126000000>;
+		};
+	};
+
+	__overrides__ {
+		cache_line_size = <&vchiq>, "cache-line-size:0";
+	};
+};

arch/arm/boot/dts/bcm2709-rpi-2-b.dts

@@ -0,0 +1,129 @@
+/dts-v1/;
+
+/include/ "bcm2709.dtsi"
+
+/ {
+	compatible = "brcm,bcm2709";
+	model = "Raspberry Pi 2 Model B";
+};
+
+&gpio {
+	spi0_pins: spi0_pins {
+		brcm,pins = <7 8 9 10 11>;
+		brcm,function = <4>; /* alt0 */
+	};
+
+	i2c0_pins: i2c0 {
+		brcm,pins = <0 1>;
+		brcm,function = <4>;
+	};
+
+	i2c1_pins: i2c1 {
+		brcm,pins = <2 3>;
+		brcm,function = <4>;
+	};
+
+	i2s_pins: i2s {
+		brcm,pins = <18 19 20 21>;
+		brcm,function = <4>; /* alt0 */
+	};
+};
+
+&mmc {
+	status = "okay";
+	bus-width = <4>;
+};
+
+&fb {
+	status = "okay";
+};
+
+&uart0 {
+	status = "okay";
+};
+
+&spi0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&spi0_pins>;
+
+	spidev@0{
+		compatible = "spidev";
+		reg = <0>;	/* CE0 */
+		#address-cells = <1>;
+		#size-cells = <0>;
+		spi-max-frequency = <500000>;
+	};
+
+	spidev@1{
+		compatible = "spidev";
+		reg = <1>;	/* CE1 */
+		#address-cells = <1>;
+		#size-cells = <0>;
+		spi-max-frequency = <500000>;
+	};
+};
+
+&i2c0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&i2c0_pins>;
+	clock-frequency = <100000>;
+};
+
+&i2c1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&i2c1_pins>;
+	clock-frequency = <100000>;
+};
+
+&i2c2 {
+	clock-frequency = <100000>;
+};
+
+&i2s {
+	#sound-dai-cells = <0>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&i2s_pins>;
+};
+
+&leds {
+	act_led: act {
+		label = "led0";
+		linux,default-trigger = "mmc0";
+		gpios = <&gpio 47 0>;
+	};
+
+	pwr_led: pwr {
+		label = "led1";
+		linux,default-trigger = "input";
+		gpios = <&gpio 35 0>;
+	};
+};
+
+/ {
+	__overrides__ {
+		uart0 = <&uart0>,"status";
+		uart0_clkrate = <&clk_uart0>,"clock-frequency:0";
+		uart1_clkrate = <&uart1>,"clock-frequency:0";
+		i2s = <&i2s>,"status";
+		spi = <&spi0>,"status";
+		i2c0 = <&i2c0>,"status";
+		i2c1 = <&i2c1>,"status";
+		i2c2_iknowwhatimdoing = <&i2c2>,"status";
+		i2c0_baudrate = <&i2c0>,"clock-frequency:0";
+		i2c1_baudrate = <&i2c1>,"clock-frequency:0";
+		i2c2_baudrate = <&i2c2>,"clock-frequency:0";
+		core_freq = <&clk_core>,"clock-frequency:0";
+
+		act_led_gpio = <&act_led>,"gpios:4";
+		act_led_activelow = <&act_led>,"gpios:8";
+		act_led_trigger = <&act_led>,"linux,default-trigger";
+
+		pwr_led_gpio = <&pwr_led>,"gpios:4";
+		pwr_led_activelow = <&pwr_led>,"gpios:8";
+		pwr_led_trigger = <&pwr_led>,"linux,default-trigger";
+
+		audio = <&audio>,"status";
+		watchdog = <&watchdog>,"status";
+		random = <&random>,"status";
+	};
+};

arch/arm/boot/dts/bcm2709.dtsi

@@ -0,0 +1,70 @@
+/include/ "bcm2708_common.dtsi"
+
+/ {
+	compatible = "brcm,bcm2709";
+	model = "BCM2709";
+
+	chosen {
+		/* No padding required - the boot loader can do that. */
+		bootargs = "";
+	};
+
+	soc {
+		ranges = <0x7e000000 0x3f000000 0x01000000>;
+
+		arm-pmu {
+			compatible = "arm,cortex-a7-pmu";
+			interrupts = <3 9>;
+		};
+	};
+
+	timer {
+		compatible = "arm,armv7-timer";
+		clock-frequency = <19200000>;
+		interrupts = <3 0>, // PHYS_SECURE_PPI
+			     <3 1>, // PHYS_NONSECURE_PPI
+			     <3 3>, // VIRT_PPI
+			     <3 2>; // HYP_PPI
+		always-on;
+	};
+
+	cpus: cpus {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		v7_cpu0: cpu@0 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a7";
+			reg = <0xf00>;
+			clock-frequency = <800000000>;
+		};
+
+		v7_cpu1: cpu@1 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a7";
+			reg = <0xf01>;
+			clock-frequency = <800000000>;
+		};
+
+		v7_cpu2: cpu@2 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a7";
+			reg = <0xf02>;
+			clock-frequency = <800000000>;
+		};
+
+		v7_cpu3: cpu@3 {
+			device_type = "cpu";
+			compatible = "arm,cortex-a7";
+			reg = <0xf03>;
+			clock-frequency = <800000000>;
+		};
+	};
+
+	__overrides__ {
+		arm_freq = <&v7_cpu0>, "clock-frequency:0",
+		       <&v7_cpu1>, "clock-frequency:0",
+		       <&v7_cpu2>, "clock-frequency:0",
+		       <&v7_cpu3>, "clock-frequency:0";
+	};
+};

arch/arm/boot/dts/bcm2835-rpi-b-plus.dts

@@ -4,27 +4,40 @@
 / {
 	compatible = "raspberrypi,model-b-plus", "brcm,bcm2835";
 	model = "Raspberry Pi Model B+";
-
-	leds {
-		act {
-			gpios = <&gpio 47 0>;
-		};
-
-		pwr {
-			label = "PWR";
-			gpios = <&gpio 35 0>;
-			default-state = "keep";
-			linux,default-trigger = "default-on";
-		};
-	};
 };
 
 &gpio {
-	pinctrl-0 = <&gpioout &alt0 &i2s_alt0 &alt3>;
+	i2s_pins: i2s {
-
-	/* I2S interface */
-	i2s_alt0: i2s_alt0 {
 		brcm,pins = <18 19 20 21>;
 		brcm,function = <4>; /* alt0 */
 	};
 };
+
+&i2s {
+	#sound-dai-cells = <0>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&i2s_pins>;
+};
+
+&act_led {
+	gpios = <&gpio 47 0>;
+};
+
+&leds {
+	pwr_led: pwr {
+		label = "led1";
+		linux,default-trigger = "input";
+		gpios = <&gpio 35 0>;
+	};
+};
+
+/ {
+	__overrides__ {
+		act_led_gpio = <&act_led>,"gpios:4";
+		act_led_activelow = <&act_led>,"gpios:8";
+
+		pwr_led_gpio = <&pwr_led>,"gpios:4";
+		pwr_led_activelow = <&pwr_led>,"gpios:8";
+		pwr_led_trigger = <&pwr_led>,"linux,default-trigger";
+	};
+};

arch/arm/boot/dts/bcm2835-rpi-b.dts

@@ -5,19 +5,28 @@
 	compatible = "raspberrypi,model-b", "brcm,bcm2835";
 	model = "Raspberry Pi Model B";
 
-	leds {
-		act {
-			gpios = <&gpio 16 1>;
-		};
-	};
 };
 
 &gpio {
-	pinctrl-0 = <&gpioout &alt0 &i2s_alt2 &alt3>;
+	i2s_pins: i2s {
-
-	/* I2S interface */
-	i2s_alt2: i2s_alt2 {
 		brcm,pins = <28 29 30 31>;
-		brcm,function = <6>; /* alt2 */
+		brcm,function = <4>; /* alt0 */
+	};
+};
+
+&i2s {
+	#sound-dai-cells = <0>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&i2s_pins>;
+};
+
+&act_led {
+	gpios = <&gpio 16 1>;
+};
+
+/ {
+	__overrides__ {
+		act_led_gpio = <&act_led>,"gpios:4";
+		act_led_activelow = <&act_led>,"gpios:8";
 	};
 };

arch/arm/boot/dts/bcm2835-rpi.dtsi

@@ -1,51 +1,112 @@
 /include/ "bcm2835.dtsi"
 
 / {
+	/* This is left here in case u-boot needs it */
 	memory {
 		reg = <0 0x10000000>;
 	};
 
-	leds {
+	aliases {
+		soc = &soc;
+		spi0 = &spi0;
+		i2c0 = &i2c0;
+		i2c1 = &i2c1;
+		i2s  = &i2s;
+		gpio = &gpio;
+		intc = &intc;
+		leds = &leds;
+		sound = &sound;
+	};
+
+	leds: leds {
 		compatible = "gpio-leds";
 
-		act {
+		act_led: act {
-			label = "ACT";
+			label = "led0";
-			default-state = "keep";
+			linux,default-trigger = "mmc0";
-			linux,default-trigger = "heartbeat";
 		};
 	};
+
+	/* Onboard audio */
+	audio: audio {
+		compatible = "brcm,bcm2835-audio";
+		brcm,pwm-channels = <8>;
+		status = "disabled";
+	};
+
+	/* External sound card */
+	sound: sound {
+	};
 };
 
 &gpio {
-	pinctrl-names = "default";
+	spi0_pins: spi0_pins {
-
+		brcm,pins = <7 8 9 10 11>;
-	gpioout: gpioout {
-		brcm,pins = <6>;
-		brcm,function = <1>; /* GPIO out */
-	};
-
-	alt0: alt0 {
-		brcm,pins = <0 1 2 3 4 5 7 8 9 10 11 14 15 40 45>;
 		brcm,function = <4>; /* alt0 */
 	};
 
-	alt3: alt3 {
+	i2c0_pins: i2c0 {
-		brcm,pins = <48 49 50 51 52 53>;
+		brcm,pins = <0 1>;
-		brcm,function = <7>; /* alt3 */
+		brcm,function = <4>;
+	};
+
+	i2c1_pins: i2c1 {
+		brcm,pins = <2 3>;
+		brcm,function = <4>;
+	};
+};
+
+&spi0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&spi0_pins>;
+
+	spidev@0{
+		compatible = "spidev";
+		reg = <0>;	/* CE0 */
+		#address-cells = <1>;
+		#size-cells = <0>;
+		spi-max-frequency = <500000>;
+	};
+
+	spidev@1{
+		compatible = "spidev";
+		reg = <1>;	/* CE1 */
+		#address-cells = <1>;
+		#size-cells = <0>;
+		spi-max-frequency = <500000>;
 	};
 };
 
 &i2c0 {
-	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <&i2c0_pins>;
 	clock-frequency = <100000>;
 };
 
 &i2c1 {
-	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <&i2c1_pins>;
 	clock-frequency = <100000>;
 };
 
-&sdhci {
+&mmc {
 	status = "okay";
 	bus-width = <4>;
 };
+
+&fb {
+	status = "okay";
+};
+
+/ {
+	__overrides__ {
+		i2s = <&i2s>,"status";
+		spi = <&spi0>,"status";
+		i2c0 = <&i2c0>,"status";
+		i2c1 = <&i2c1>,"status";
+		i2c0_baudrate = <&i2c0>,"clock-frequency:0";
+		i2c1_baudrate = <&i2c1>,"clock-frequency:0";
+		act_led_trigger = <&act_led>,"linux,default-trigger";
+		audio = <&audio>,"status";
+	};
+};

arch/arm/boot/dts/bcm2835.dtsi

@@ -6,14 +6,15 @@
 	interrupt-parent = <&intc>;
 
 	chosen {
-		bootargs = "earlyprintk console=ttyAMA0";
+		bootargs = "";
 	};
 
-	soc {
+	soc: soc {
 		compatible = "simple-bus";
 		#address-cells = <1>;
 		#size-cells = <1>;
 		ranges = <0x7e000000 0x20000000 0x02000000>;
+		dma-ranges = <0x40000000 0x00000000 0x20000000>;
 
 		timer@7e003000 {
 			compatible = "brcm,bcm2835-system-timer";
@@ -50,16 +51,22 @@
 			#interrupt-cells = <2>;
 		};
 
-		watchdog@7e100000 {
+		watchdog: watchdog@7e100000 {
 			compatible = "brcm,bcm2835-pm-wdt";
 			reg = <0x7e100000 0x28>;
 		};
 
-		rng@7e104000 {
+		random: rng@7e104000 {
 			compatible = "brcm,bcm2835-rng";
 			reg = <0x7e104000 0x10>;
 		};
 
+		mailbox: mailbox@7e00b800 {
+			compatible = "brcm,bcm2708-vcio";
+			reg = <0x7e00b880 0x40>;
+			interrupts = <0 1>;
+		};
+
 		gpio: gpio@7e200000 {
 			compatible = "brcm,bcm2835-gpio";
 			reg = <0x7e200000 0xb4>;
@@ -83,7 +90,7 @@
 			#interrupt-cells = <2>;
 		};
 
-		uart@7e201000 {
+		uart0: uart@7e201000 {
 			compatible = "brcm,bcm2835-pl011", "arm,pl011", "arm,primecell";
 			reg = <0x7e201000 0x1000>;
 			interrupts = <2 25>;
@@ -93,8 +100,8 @@
 
 		i2s: i2s@7e203000 {
 			compatible = "brcm,bcm2835-i2s";
-			reg = <0x7e203000 0x20>,
+			reg = <0x7e203000 0x24>,
-			      <0x7e101098 0x02>;
+			      <0x7e101098 0x08>;
 
 			dmas = <&dma 2>,
 			       <&dma 3>;
@@ -102,7 +109,7 @@
 			status = "disabled";
 		};
 
-		spi: spi@7e204000 {
+		spi0: spi@7e204000 {
 			compatible = "brcm,bcm2835-spi";
 			reg = <0x7e204000 0x1000>;
 			interrupts = <2 22>;
@@ -122,11 +129,14 @@
 			status = "disabled";
 		};
 
-		sdhci: sdhci@7e300000 {
+		mmc: mmc@7e300000 {
-			compatible = "brcm,bcm2835-sdhci";
+			compatible = "brcm,bcm2835-mmc";
 			reg = <0x7e300000 0x100>;
 			interrupts = <2 30>;
 			clocks = <&clk_mmc>;
+			dmas = <&dma 11>,
+			       <&dma 11>;
+			dma-names = "tx", "rx";
 			status = "disabled";
 		};
 
@@ -140,7 +150,7 @@
 			status = "disabled";
 		};
 
-		usb@7e980000 {
+		usb: usb@7e980000 {
 			compatible = "brcm,bcm2835-usb";
 			reg = <0x7e980000 0x10000>;
 			interrupts = <1 9>;
@@ -149,6 +159,21 @@
 		arm-pmu {
 			compatible = "arm,arm1176-pmu";
 		};
+
+		fb: fb {
+			compatible = "brcm,bcm2708-fb";
+			status = "disabled";
+		};
+
+		vchiq: vchiq {
+			compatible = "brcm,bcm2835-vchiq";
+			reg = <0x7e00b840 0xf>;
+			interrupts = <0 2>;
+		};
+
+		thermal: thermal {
+			compatible = "brcm,bcm2835-thermal";
+		};
 	};
 
 	clocks {
@@ -161,7 +186,7 @@
 			reg = <0>;
 			#clock-cells = <0>;
 			clock-output-names = "mmc";
-			clock-frequency = <100000000>;
+			clock-frequency = <250000000>;
 		};
 
 		clk_i2c: clock@1 {

arch/arm/boot/dts/dove.dtsi

@@ -154,7 +154,7 @@
 
 			uart2: serial@12200 {
 				compatible = "ns16550a";
-				reg = <0x12000 0x100>;
+				reg = <0x12200 0x100>;
 				reg-shift = <2>;
 				interrupts = <9>;
 				clocks = <&core_clk 0>;
@@ -163,7 +163,7 @@
 
 			uart3: serial@12300 {
 				compatible = "ns16550a";
-				reg = <0x12100 0x100>;
+				reg = <0x12300 0x100>;
 				reg-shift = <2>;
 				interrupts = <10>;
 				clocks = <&core_clk 0>;

arch/arm/boot/dts/exynos4412-trats2.dts

@@ -736,7 +736,7 @@
 
 			display-timings {
 				timing-0 {
-					clock-frequency = <0>;
+					clock-frequency = <57153600>;
 					hactive = <720>;
 					vactive = <1280>;
 					hfront-porch = <5>;

arch/arm/boot/dts/exynos5250-spring.dts

@@ -429,7 +429,6 @@
 &mmc_0 {
 	status = "okay";
 	num-slots = <1>;
-	supports-highspeed;
 	broken-cd;
 	card-detect-delay = <200>;
 	samsung,dw-mshc-ciu-div = <3>;
@@ -437,11 +436,8 @@
 	samsung,dw-mshc-ddr-timing = <1 2>;
 	pinctrl-names = "default";
 	pinctrl-0 = <&sd0_clk &sd0_cmd &sd0_cd &sd0_bus4 &sd0_bus8>;
-
+	bus-width = <8>;
-	slot@0 {
+	cap-mmc-highspeed;
-		reg = <0>;
-		bus-width = <8>;
-	};
 };
 
 /*
@@ -451,7 +447,6 @@
 &mmc_1 {
 	status = "okay";
 	num-slots = <1>;
-	supports-highspeed;
 	broken-cd;
 	card-detect-delay = <200>;
 	samsung,dw-mshc-ciu-div = <3>;
@@ -459,11 +454,8 @@
 	samsung,dw-mshc-ddr-timing = <1 2>;
 	pinctrl-names = "default";
 	pinctrl-0 = <&sd1_clk &sd1_cmd &sd1_cd &sd1_bus4>;
-
+	bus-width = <4>;
-	slot@0 {
+	cap-sd-highspeed;
-		reg = <0>;
-		bus-width = <4>;
-	};
 };
 
 &pinctrl_0 {

arch/arm/boot/dts/imx23-olinuxino.dts

@@ -12,6 +12,7 @@
  */
 
 /dts-v1/;
+#include <dt-bindings/gpio/gpio.h>
 #include "imx23.dtsi"
 
 / {
@@ -93,6 +94,7 @@
 
 	ahb@80080000 {
 		usb0: usb@80080000 {
+			dr_mode = "host";
 			vbus-supply = <&reg_usb0_vbus>;
 			status = "okay";
 		};
@@ -122,7 +124,7 @@
 
 		user {
 			label = "green";
-			gpios = <&gpio2 1 1>;
+			gpios = <&gpio2 1 GPIO_ACTIVE_HIGH>;
 		};
 	};
 };

arch/arm/boot/dts/imx25.dtsi

@@ -428,6 +428,7 @@
 
 			pwm4: pwm@53fc8000 {
 				compatible = "fsl,imx25-pwm", "fsl,imx27-pwm";
+				#pwm-cells = <2>;
 				reg = <0x53fc8000 0x4000>;
 				clocks = <&clks 108>, <&clks 52>;
 				clock-names = "ipg", "per";

arch/arm/boot/dts/imx27.dtsi

@@ -531,7 +531,7 @@
 
 			fec: ethernet@1002b000 {
 				compatible = "fsl,imx27-fec";
-				reg = <0x1002b000 0x4000>;
+				reg = <0x1002b000 0x1000>;
 				interrupts = <50>;
 				clocks = <&clks IMX27_CLK_FEC_IPG_GATE>,
 					 <&clks IMX27_CLK_FEC_AHB_GATE>;

arch/arm/boot/dts/imx28.dtsi

@@ -900,7 +900,7 @@
 					      80 81 68 69
 					      70 71 72 73
 					      74 75 76 77>;
-				interrupt-names = "auart4-rx", "aurat4-tx", "spdif-tx", "empty",
+				interrupt-names = "auart4-rx", "auart4-tx", "spdif-tx", "empty",
 						  "saif0", "saif1", "i2c0", "i2c1",
 						  "auart0-rx", "auart0-tx", "auart1-rx", "auart1-tx",
 						  "auart2-rx", "auart2-tx", "auart3-rx", "auart3-tx";

arch/arm/boot/dts/imx6qdl-phytec-pfla02.dtsi

@@ -31,6 +31,7 @@
 			regulator-min-microvolt = <5000000>;
 			regulator-max-microvolt = <5000000>;
 			gpio = <&gpio4 15 0>;
+			enable-active-high;
 		};
 
 		reg_usb_h1_vbus: regulator@1 {
@@ -40,6 +41,7 @@
 			regulator-min-microvolt = <5000000>;
 			regulator-max-microvolt = <5000000>;
 			gpio = <&gpio1 0 0>;
+			enable-active-high;
 		};
 	};
 

arch/arm/boot/dts/omap3-n900.dts

@@ -484,6 +484,8 @@
 		DRVDD-supply = <&vmmc2>;
 		IOVDD-supply = <&vio>;
 		DVDD-supply = <&vio>;
+
+		ai3x-micbias-vg = <1>;
 	};
 
 	tlv320aic3x_aux: tlv320aic3x@19 {
@@ -495,6 +497,8 @@
 		DRVDD-supply = <&vmmc2>;
 		IOVDD-supply = <&vio>;
 		DVDD-supply = <&vio>;
+
+		ai3x-micbias-vg = <2>;
 	};
 
 	tsl2563: tsl2563@29 {

arch/arm/boot/dts/overlays/Makefile

@@ -0,0 +1,64 @@
+ifeq ($(CONFIG_OF),y)
+
+# Overlays for the Raspberry Pi platform
+
+ifeq ($(CONFIG_BCM2708_DT),y)
+   RPI_DT_OVERLAYS=y
+endif
+ifeq ($(CONFIG_BCM2709_DT),y)
+   RPI_DT_OVERLAYS=y
+endif
+ifeq ($(CONFIG_ARCH_BCM2835),y)
+   RPI_DT_OVERLAYS=y
+endif
+
+dtb-$(RPI_DT_OVERLAYS) += ads7846-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += bmp085_i2c-sensor-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += dht11-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += enc28j60-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += gpio-poweroff-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += hifiberry-amp-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += hifiberry-dac-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += hifiberry-dacplus-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += hifiberry-digi-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += hy28a-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += hy28b-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += i2c-rtc-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += i2s-mmap-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += iqaudio-dac-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += iqaudio-dacplus-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += lirc-rpi-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += mcp2515-can0-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += mcp2515-can1-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += mmc-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += mz61581-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += piscreen-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += pitft28-resistive-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += pps-gpio-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += rpi-dac-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += rpi-display-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += rpi-ft5406-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += rpi-proto-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += rpi-sense-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += sdhost-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += spi-bcm2708-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += spi-bcm2835-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += spi-dma-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += tinylcd35-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += uart1-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += vga666-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += w1-gpio-overlay.dtb
+dtb-$(RPI_DT_OVERLAYS) += w1-gpio-pullup-overlay.dtb
+
+targets += dtbs dtbs_install
+targets += $(dtb-y)
+
+endif
+
+always		:= $(dtb-y)
+clean-files	:= *.dtb
+
+# Enable fixups to support overlays on BCM2708 platforms
+ifeq ($(RPI_DT_OVERLAYS),y)
+	DTC_FLAGS ?= -@
+endif

arch/arm/boot/dts/overlays/README

@@ -0,0 +1,572 @@
+Introduction
+============
+
+This directory contains Device Tree overlays. Device Tree makes it possible
+to support many hardware configurations with a single kernel and without the
+need to explicitly load or blacklist kernel modules. Note that this isn't a
+"pure" Device Tree configuration (c.f. MACH_BCM2835) - some on-board devices
+are still configured by the board support code, but the intention is to
+eventually reach that goal.
+
+On Raspberry Pi, Device Tree usage is controlled from /boot/config.txt. By
+default, the Raspberry Pi kernel boots with device tree enabled. You can
+completely disable DT usage (for now) by adding:
+
+    device_tree=
+
+to your config.txt, which should cause your Pi to revert to the old way of
+doing things after a reboot.
+
+In /boot you will find a .dtb for each base platform. This describes the
+hardware that is part of the Raspberry Pi board. The loader (start.elf and its
+siblings) selects the .dtb file appropriate for the platform by name, and reads
+it into memory. At this point, all of the optional interfaces (i2c, i2s, spi)
+are disabled, but they can be enabled using Device Tree parameters:
+
+    dtparam=i2c=on,i2s=on,spi=on
+
+However, this shouldn't be necessary in many use cases because loading an
+overlay that requires one of those interfaces will cause it to be enabled
+automatically, and it is advisable to only enable interfaces if they are
+needed.
+
+Configuring additional, optional hardware is done using Device Tree overlays
+(see below).
+
+raspi-config
+============
+
+The Advanced Options section of the raspi-config utility can enable and disable
+Device Tree use, as well as toggling the I2C and SPI interfaces. Note that it
+is possible to both enable an interface and blacklist the driver, if for some
+reason you should want to defer the loading.
+
+Modules
+=======
+
+As well as describing the hardware, Device Tree also gives enough information
+to allow suitable driver modules to be located and loaded, with the corollary
+that unneeded modules are not loaded. As a result it should be possible to
+remove lines from /etc/modules, and /etc/modprobe.d/raspi-blacklist.conf can
+have its contents deleted (or commented out).
+
+Using Overlays
+==============
+
+Overlays are loaded using the "dtoverlay" directive. As an example, consider the
+popular lirc-rpi module, the Linux Infrared Remote Control driver. In the
+pre-DT world this would be loaded from /etc/modules, with an explicit
+"modprobe lirc-rpi" command, or programmatically by lircd. With DT enabled,
+this becomes a line in config.txt:
+
+    dtoverlay=lirc-rpi
+
+This causes the file /boot/overlays/lirc-rpi-overlay.dtb to be loaded. By
+default it will use GPIOs 17 (out) and 18 (in), but this can be modified using
+DT parameters:
+
+    dtoverlay=lirc-rpi,gpio_out_pin=17,gpio_in_pin=13
+
+Parameters always have default values, although in some cases (e.g. "w1-gpio")
+it is necessary to provided multiple overlays in order to get the desired
+behaviour. See the list of overlays below for a description of the parameters and their defaults.
+
+The Overlay and Parameter Reference
+===================================
+
+Name:   <The base DTB>
+Info:   Configures the base Raspberry Pi hardware
+Load:   <loaded automatically>
+Params:
+        audio                    Set to "on" to enable the onboard ALSA audio
+                                 interface (default "off")
+
+        i2c_arm                  Set to "on" to enable the ARM's i2c interface
+                                 (default "off")
+
+        i2c_vc                   Set to "on" to enable the i2c interface
+                                 usually reserved for the VideoCore processor
+                                 (default "off")
+
+        i2c                      An alias for i2c_arm
+
+        i2c_arm_baudrate         Set the baudrate of the ARM's i2c interface
+                                 (default "100000")
+
+        i2c_vc_baudrate          Set the baudrate of the VideoCore i2c interface
+                                 (default "100000")
+
+        i2c_baudrate             An alias for i2c_arm_baudrate
+
+        i2s                      Set to "on" to enable the i2s interface
+                                 (default "off")
+
+        spi                      Set to "on" to enable the spi interfaces
+                                 (default "off")
+
+        random                   Set to "on" to enable the hardware random
+                                 number generator (default "off")
+
+        uart0                    Set to "off" to disable uart0 (default "on")
+
+        watchdog                 Set to "on" to enable the hardware watchdog
+                                 (default "off")
+
+        act_led_trigger          Choose which activity the LED tracks.
+                                 Use "heartbeat" for a nice load indicator.
+                                 (default "mmc")
+
+        act_led_activelow        Set to "on" to invert the sense of the LED
+                                 (default "off")
+
+        act_led_gpio             Set which GPIO to use for the activity LED
+                                 (in case you want to connect it to an external
+                                 device)
+                                 (default "16" on a non-Plus board, "47" on a
+                                 Plus or Pi 2)
+
+        pwr_led_trigger
+        pwr_led_activelow
+        pwr_led_gpio
+                                 As for act_led_*, but using the PWR LED.
+                                 Not available on Model A/B boards.
+
+        N.B. It is recommended to only enable those interfaces that are needed.
+        Leaving all interfaces enabled can lead to unwanted behaviour (i2c_vc
+        interfering with Pi Camera, I2S and SPI hogging GPIO pins, etc.)
+        Note also that i2c, i2c_arm and i2c_vc are aliases for the physical
+        interfaces i2c0 and i2c1. Use of the numeric variants is still possible
+        but deprecated because the ARM/VC assignments differ between board
+        revisions. The same board-specific mapping applies to i2c_baudrate,
+        and the other i2c baudrate parameters.
+
+
+Name:   ads7846
+Info:   ADS7846 Touch controller
+Load:   dtoverlay=ads7846,<param>=<val>
+Params: cs                       SPI bus Chip Select (default 1)
+        speed                    SPI bus speed (default 2Mhz, max 3.25MHz)
+        penirq                   GPIO used for PENIRQ. REQUIRED
+        penirq_pull              Set GPIO pull (default 0=none, 2=pullup)
+        swapxy                   Swap x and y axis
+        xmin                     Minimum value on the X axis (default 0)
+        ymin                     Minimum value on the Y axis (default 0)
+        xmax                     Maximum value on the X axis (default 4095)
+        ymax                     Maximum value on the Y axis (default 4095)
+        pmin                     Minimum reported pressure value (default 0)
+        pmax                     Maximum reported pressure value (default 65535)
+        xohms                    Touchpanel sensitivity (X-plate resistance)
+                                 (default 400)
+
+        penirq is required and usually xohms (60-100) has to be set as well.
+        Apart from that, pmax (255) and swapxy are also common.
+        The rest of the calibration can be done with xinput-calibrator.
+        See: github.com/notro/fbtft/wiki/FBTFT-on-Raspian
+        Device Tree binding document:
+        www.kernel.org/doc/Documentation/devicetree/bindings/input/ads7846.txt
+
+
+Name:   bmp085_i2c-sensor
+Info:   Configures the BMP085/BMP180 digital barometric pressure and temperature
+        sensors from Bosch Sensortec
+Load:   dtoverlay=bmp085_i2c-sensor
+Params: <None>
+
+
+Name:   dht11
+Info:   Overlay for the DHT11/DHT21/DHT22 humidity/temperature sensors
+        Also sometimes found with the part number(s) AM230x.
+Load:   dtoverlay=dht11,<param>=<val>
+Params: gpiopin                  GPIO connected to the sensor's DATA output.
+                                 (default 4)
+
+
+[ The ds1307-rtc overlay has been deleted. See i2c-rtc. ]
+
+
+Name:   enc28j60
+Info:   Overlay for the Microchip ENC28J60 Ethernet Controller (SPI)
+Load:   dtoverlay=enc28j60,<param>=<val>
+Params: int_pin                  GPIO used for INT (default 25)
+
+        speed                    SPI bus speed (default 12000000)
+
+
+Name:   gpio-poweroff
+Info:   Drives a GPIO high or low on reboot
+Load:   gpio-poweroff,<param>=<val>
+Params: gpiopin                  GPIO for signalling (default 26)
+
+        active_low               Set if the power control device requires a
+                                 high->low transition to trigger a power-down.
+                                 Note that this will require the support of a
+                                 custom dt-blob.bin to prevent a power-down
+                                 during the boot process, and that a reboot
+                                 will also cause the pin to go low.
+
+
+Name:   hifiberry-amp
+Info:   Configures the HifiBerry Amp and Amp+ audio cards
+Load:   dtoverlay=hifiberry-amp
+Params: <None>
+
+
+Name:   hifiberry-dac
+Info:   Configures the HifiBerry DAC audio card
+Load:   dtoverlay=hifiberry-dac
+Params: <None>
+
+
+Name:   hifiberry-dacplus
+Info:   Configures the HifiBerry DAC+ audio card
+Load:   dtoverlay=hifiberry-dacplus
+Params: <None>
+
+
+Name:   hifiberry-digi
+Info:   Configures the HifiBerry Digi audio card
+Load:   dtoverlay=hifiberry-digi
+Params: <None>
+
+
+Name:   hy28a
+Info:   HY28A - 2.8" TFT LCD Display Module by HAOYU Electronics
+        Default values match Texy's display shield
+Load:   dtoverlay=hy28a,<param>=<val>
+Params: speed                    Display SPI bus speed
+
+        rotate                   Display rotation {0,90,180,270}
+
+        fps                      Delay between frame updates
+
+        debug                    Debug output level {0-7}
+
+        xohms                    Touchpanel sensitivity (X-plate resistance)
+
+        resetgpio                GPIO used to reset controller
+
+        ledgpio                  GPIO used to control backlight
+
+
+Name:   hy28b
+Info:   HY28B - 2.8" TFT LCD Display Module by HAOYU Electronics
+        Default values match Texy's display shield
+Load:   dtoverlay=hy28b,<param>=<val>
+Params: speed                    Display SPI bus speed
+
+        rotate                   Display rotation {0,90,180,270}
+
+        fps                      Delay between frame updates
+
+        debug                    Debug output level {0-7}
+
+        xohms                    Touchpanel sensitivity (X-plate resistance)
+
+        resetgpio                GPIO used to reset controller
+
+        ledgpio                  GPIO used to control backlight
+
+
+Name:   i2c-rtc
+Info:   Adds support for a number of I2C Real Time Clock devices
+Load:   dtoverlay=i2c-rtc,<param>
+Params: ds1307                   Select the DS1307 device
+
+        ds3231                   Select the DS3231 device
+
+        mcp7941x                 Select the MCP7941x device
+
+        pcf2127                  Select the PCF2127 device
+
+        pcf8523                  Select the PCF8523 device
+
+        pcf8563                  Select the PCF8563 device
+
+
+Name:   i2s-mmap
+Info:   Enables mmap support in the bcm2708-i2s driver
+Load:   dtoverlay=i2s-mmap
+Params: <None>
+
+
+Name:   iqaudio-dac
+Info:   Configures the IQaudio DAC audio card
+Load:   dtoverlay=iqaudio-dac
+Params: <None>
+
+
+Name:   iqaudio-dacplus
+Info:   Configures the IQaudio DAC+ audio card
+Load:   dtoverlay=iqaudio-dacplus
+Params: <None>
+
+
+Name:   lirc-rpi
+Info:   Configures lirc-rpi (Linux Infrared Remote Control for Raspberry Pi)
+        Consult the module documentation for more details.
+Load:   dtoverlay=lirc-rpi,<param>=<val>,...
+Params: gpio_out_pin             GPIO for output (default "17")
+
+        gpio_in_pin              GPIO for input (default "18")
+
+        gpio_in_pull             Pull up/down/off on the input pin
+                                 (default "down")
+
+        sense                    Override the IR receive auto-detection logic:
+                                   "0" = force active-high
+                                   "1" = force active-low
+                                   "-1" = use auto-detection
+                                 (default "-1")
+
+        softcarrier              Turn the software carrier "on" or "off"
+                                 (default "on")
+
+        invert                   "on" = invert the output pin (default "off")
+
+        debug                    "on" = enable additional debug messages
+                                 (default "off")
+
+
+Name:   mcp2515-can0
+Info:   Configures the MCP2515 CAN controller on spi0.0
+Load:   dtoverlay=mcp2515-can0,<param>=<val>
+Params: oscillator               Clock frequency for the CAN controller (Hz)
+
+        spimaxfrequency          Maximum SPI frequence (Hz)
+
+        interrupt                GPIO for interrupt signal
+
+
+Name:   mcp2515-can1
+Info:   Configures the MCP2515 CAN controller on spi0.1
+Load:   dtoverlay=mcp2515-can1,<param>=<val>
+Params: oscillator               Clock frequency for the CAN controller (Hz)
+
+        spimaxfrequency          Maximum SPI frequence (Hz)
+
+        interrupt                GPIO for interrupt signal
+
+
+Name:   mmc
+Info:   Selects the bcm2835-mmc SD/MMC driver, optionally with overclock
+Load:   dtoverlay=mmc,<param>=<val>
+Params: overclock_50             Clock (in MHz) to use when the MMC framework
+                                 requests 50MHz
+        force_pio                Disable DMA support
+
+
+Name:   mz61581
+Info:   MZ61581 display by Tontec
+Load:   dtoverlay=mz61581,<param>=<val>
+Params: speed                    Display SPI bus speed
+
+        rotate                   Display rotation {0,90,180,270}
+
+        fps                      Delay between frame updates
+
+        debug                    Debug output level {0-7}
+
+        xohms                    Touchpanel sensitivity (X-plate resistance)
+
+
+[ The pcf2127-rtc overlay has been deleted. See i2c-rtc. ]
+
+
+[ The pcf8523-rtc overlay has been deleted. See i2c-rtc. ]
+
+
+[ The pcf8563-rtc overlay has been deleted. See i2c-rtc. ]
+
+
+Name:   piscreen
+Info:   PiScreen display by OzzMaker.com
+Load:   dtoverlay=piscreen,<param>=<val>
+Params: speed                    Display SPI bus speed
+
+        rotate                   Display rotation {0,90,180,270}
+
+        fps                      Delay between frame updates
+
+        debug                    Debug output level {0-7}
+
+        xohms                    Touchpanel sensitivity (X-plate resistance)
+
+
+Name:   pitft28-resistive
+Info:   Adafruit PiTFT 2.8" resistive touch screen
+Load:   dtoverlay=pitft28-resistive,<param>=<val>
+Params: speed                    Display SPI bus speed
+
+        rotate                   Display rotation {0,90,180,270}
+
+        fps                      Delay between frame updates
+
+        debug                    Debug output level {0-7}
+
+
+Name:   pps-gpio
+Info:   Configures the pps-gpio (pulse-per-second time signal via GPIO).
+Load:   dtoverlay=pps-gpio,<param>=<val>
+Params: gpiopin                  Input GPIO (default "18")
+
+
+Name:   rpi-dac
+Info:   Configures the RPi DAC audio card
+Load:   dtoverlay=rpi-dac
+Params: <None>
+
+
+Name:   rpi-display
+Info:   RPi-Display - 2.8" Touch Display by Watterott
+Load:   dtoverlay=rpi-display,<param>=<val>
+Params: speed                    Display SPI bus speed
+
+        rotate                   Display rotation {0,90,180,270}
+
+        fps                      Delay between frame updates
+
+        debug                    Debug output level {0-7}
+
+        xohms                    Touchpanel sensitivity (X-plate resistance)
+
+
+Name:   rpi-ft5406
+Info:   Official Raspberry Pi display touchscreen
+Load:   dtoverlay=rpi-ft5406
+Params: <None>
+
+
+Name:   rpi-proto
+Info:   Configures the RPi Proto audio card
+Load:   dtoverlay=rpi-proto
+Params: <None>
+
+
+Name:   rpi-sense
+Info:   Raspberry Pi Sense HAT
+Load:   dtoverlay=rpi-sense
+Params: <None>
+
+
+Name:   sdhost
+Info:   Selects the bcm2835-sdhost SD/MMC driver, optionally with overclock
+Load:   dtoverlay=sdhost,<param>=<val>
+Params: overclock_50             Clock (in MHz) to use when the MMC framework
+                                 requests 50MHz
+
+        force_pio                Disable DMA support (default off)
+
+        pio_limit                Number of blocks above which to use DMA
+                                 (default 1)
+
+        debug                    Enable debug output (default off)
+
+
+Name:   spi-bcm2708
+Info:   Selects the bcm2708-spi SPI driver
+Load:   dtoverlay=spi-bcm2708
+Params: <None>
+
+
+Name:   spi-bcm2835
+Info:   Selects the bcm2835-spi SPI driver
+Load:   dtoverlay=spi-bcm2835
+Params: <None>
+
+
+Name:   spi-dma
+Info:   enables dma modes for spi-bcm2835
+Load:   dtoverlay=spi-dma
+Params: <None>
+
+
+Name:   tinylcd35
+Info:   3.5" Color TFT Display by www.tinylcd.com
+        Options: Touch, RTC, keypad
+Load:   dtoverlay=tinylcd35,<param>=<val>
+Params: speed                    Display SPI bus speed
+
+        rotate                   Display rotation {0,90,180,270}
+
+        fps                      Delay between frame updates
+
+        debug                    Debug output level {0-7}
+
+        touch                    Enable touch panel
+
+        touchgpio                Touch controller IRQ GPIO
+
+        xohms                    Touchpanel: Resistance of X-plate in ohms
+
+        rtc-pcf                  PCF8563 Real Time Clock
+
+        rtc-ds                   DS1307 Real Time Clock
+
+        keypad                   Enable keypad
+
+        Examples:
+            Display with touchpanel, PCF8563 RTC and keypad:
+                dtoverlay=tinylcd35,touch,rtc-pcf,keypad
+            Old touch display:
+                dtoverlay=tinylcd35,touch,touchgpio=3
+
+
+Name:   uart1
+Info:   Enable uart1 in place of uart0
+Load:   dtoverlay=uart1,<param>=<val>
+Params: txd1_pin                 GPIO pin for TXD1 (14, 32 or 40 - default 14)
+
+        rxd1_pin                 GPIO pin for RXD1 (15, 33 or 41 - default 15)
+
+
+Name:   vga666
+Info:   Overlay for the Fen Logic VGA666 board
+        This uses GPIOs 2-21 (so no I2C), and activates the output 2-3 seconds
+        after the kernel has started.
+Load:   dtoverlay=vga666
+Params: <None>
+
+
+Name:   w1-gpio
+Info:   Configures the w1-gpio Onewire interface module.
+        Use this overlay if you *don't* need a GPIO to drive an external pullup.
+Load:   dtoverlay=w1-gpio,<param>=<val>
+Params: gpiopin                  GPIO for I/O (default "4")
+
+        pullup                   Non-zero, "on", or "y" to enable the parasitic
+                                 power (2-wire, power-on-data) feature
+
+
+Name:   w1-gpio-pullup
+Info:   Configures the w1-gpio Onewire interface module.
+        Use this overlay if you *do* need a GPIO to drive an external pullup.
+Load:   dtoverlay=w1-gpio-pullup,<param>=<val>,...
+Params: gpiopin                  GPIO for I/O (default "4")
+
+        pullup                   Non-zero, "on", or "y" to enable the parasitic
+                                 power (2-wire, power-on-data) feature
+
+        extpullup                GPIO for external pullup (default "5")
+
+
+Troubleshooting
+===============
+
+If you are experiencing problems that you think are DT-related, enable DT
+diagnostic output by adding this to /boot/config.txt:
+
+    dtdebug=on
+
+and rebooting. Then run:
+
+    sudo vcdbg log msg
+
+and look for relevant messages.
+
+Further reading
+===============
+
+This is only meant to be a quick introduction to the subject of Device Tree on
+Raspberry Pi. There is a more complete explanation here:
+
+http://www.raspberrypi.org/documentation/configuration/device-tree.md

arch/arm/boot/dts/overlays/ads7846-overlay.dts

@@ -0,0 +1,83 @@
+/*
+ * Generic Device Tree overlay for the ADS7846 touch controller
+ *
+ */
+
+/dts-v1/;
+/plugin/;
+
+/ {
+	compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709";
+
+	fragment@0 {
+		target = <&spi0>;
+		__overlay__ {
+			status = "okay";
+
+			spidev@0{
+				status = "disabled";
+			};
+
+			spidev@1{
+				status = "disabled";
+			};
+		};
+	};
+
+	fragment@1 {
+		target = <&gpio>;
+		__overlay__ {
+			ads7846_pins: ads7846_pins {
+				brcm,pins = <255>; /* illegal default value */
+				brcm,function = <0>; /* in */
+				brcm,pull = <0>; /* none */
+			};
+		};
+	};
+
+	fragment@2 {
+		target = <&spi0>;
+		__overlay__ {
+			/* needed to avoid dtc warning */
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			ads7846: ads7846@1 {
+				compatible = "ti,ads7846";
+				reg = <1>;
+				pinctrl-names = "default";
+				pinctrl-0 = <&ads7846_pins>;
+
+				spi-max-frequency = <2000000>;
+				interrupts = <255 2>; /* high-to-low edge triggered */
+				interrupt-parent = <&gpio>;
+				pendown-gpio = <&gpio 255 0>;
+
+				/* driver defaults */
+				ti,x-min = /bits/ 16 <0>;
+				ti,y-min = /bits/ 16 <0>;
+				ti,x-max = /bits/ 16 <0x0FFF>;
+				ti,y-max = /bits/ 16 <0x0FFF>;
+				ti,pressure-min = /bits/ 16 <0>;
+				ti,pressure-max = /bits/ 16 <0xFFFF>;
+				ti,x-plate-ohms = /bits/ 16 <400>;
+			};
+		};
+	};
+	__overrides__ {
+		cs =     <&ads7846>,"reg:0";
+		speed =  <&ads7846>,"spi-max-frequency:0";
+		penirq = <&ads7846_pins>,"brcm,pins:0", /* REQUIRED */
+			 <&ads7846>,"interrupts:0",
+			 <&ads7846>,"pendown-gpio:4";
+		penirq_pull = <&ads7846_pins>,"brcm,pull:0";
+		swapxy = <&ads7846>,"ti,swap-xy?";
+		xmin =   <&ads7846>,"ti,x-min;0";
+		ymin =   <&ads7846>,"ti,y-min;0";
+		xmax =   <&ads7846>,"ti,x-max;0";
+		ymax =   <&ads7846>,"ti,y-max;0";
+		pmin =   <&ads7846>,"ti,pressure-min;0";
+		pmax =   <&ads7846>,"ti,pressure-max;0";
+		xohms =  <&ads7846>,"ti,x-plate-ohms;0";
+	};
+};

arch/arm/boot/dts/overlays/bmp085_i2c-sensor-overlay.dts

@@ -0,0 +1,23 @@
+// Definitions for BMP085/BMP180 digital barometric pressure and temperature sensors from Bosch Sensortec
+/dts-v1/;
+/plugin/;
+
+/ {
+        compatible = "brcm,bcm2708";
+
+        fragment@0 {
+                target = <&i2c_arm>;
+                __overlay__ {
+                        #address-cells = <1>;
+                        #size-cells = <0>;
+                        status = "okay";
+
+                        bmp085@77 {
+                                compatible = "bosch,bmp085";
+                                reg = <0x77>;
+                                default-oversampling = <3>;
+                                status = "okay";
+                        };
+                };
+        };
+};

arch/arm/boot/dts/overlays/dht11-overlay.dts

@@ -0,0 +1,39 @@
+/*
+ * Overlay for the DHT11/21/22 humidity/temperature sensor modules.
+ */
+/dts-v1/;
+/plugin/;
+
+/ {
+	compatible = "brcm,bcm2708";
+
+	fragment@0 {
+		target-path = "/";
+		__overlay__ {
+
+			dht11: dht11@0 {
+				compatible = "dht11";
+				pinctrl-names = "default";
+				pinctrl-0 = <&dht11_pins>;
+				gpios = <&gpio 4 0>;
+				status = "okay";
+			};
+		};
+	};
+
+	fragment@1 {
+		target = <&gpio>;
+		__overlay__ {
+			dht11_pins: dht11_pins {
+				brcm,pins = <4>;
+				brcm,function = <0>; // in
+				brcm,pull = <0>; // off
+			};
+		};
+	};
+
+	__overrides__ {
+		gpiopin = <&dht11_pins>,"brcm,pins:0",
+			<&dht11>,"gpios:4";
+	};
+};

arch/arm/boot/dts/overlays/enc28j60-overlay.dts

@@ -0,0 +1,50 @@
+// Overlay for the Microchip ENC28J60 Ethernet Controller
+/dts-v1/;
+/plugin/;
+
+/ {
+	compatible = "brcm,bcm2708";
+
+	fragment@0 {
+		target = <&spi0>;
+		__overlay__ {
+			/* needed to avoid dtc warning */
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			status = "okay";
+
+			spidev@0{
+				status = "disabled";
+			};
+
+			eth1: enc28j60@0{
+				compatible = "microchip,enc28j60";
+				reg = <0>; /* CE0 */
+				pinctrl-names = "default";
+				pinctrl-0 = <&eth1_pins>;
+				interrupt-parent = <&gpio>;
+				interrupts = <25 0x2>; /* falling edge */
+				spi-max-frequency = <12000000>;
+				status = "okay";
+			};
+		};
+	};
+
+	fragment@1 {
+		target = <&gpio>;
+		__overlay__ {
+			eth1_pins: eth1_pins {
+				brcm,pins = <25>;
+				brcm,function = <0>; /* in */
+				brcm,pull = <0>; /* none */
+			};
+		};
+	};
+
+	__overrides__ {
+		int_pin = <&eth1>, "interrupts:0",
+		          <&eth1_pins>, "brcm,pins:0";
+		speed   = <&eth1>, "spi-max-frequency:0";
+	};
+};

arch/arm/boot/dts/overlays/gpio-poweroff-overlay.dts

@@ -0,0 +1,34 @@
+// Definitions for gpio-poweroff module
+/dts-v1/;
+/plugin/;
+
+/ {
+	compatible = "brcm,bcm2708";
+
+	fragment@0 {
+		target-path = "/";
+		__overlay__ {
+			power_ctrl: power_ctrl {
+				compatible = "gpio-poweroff";
+				gpios = <&gpio 26 0>;
+				force;
+			};
+		};
+	};
+
+	fragment@1 {
+		target = <&gpio>;
+		__overlay__ {
+			power_ctrl_pins: power_ctrl_pins {
+				brcm,pins = <26>;
+				brcm,function = <1>; // out
+			};
+		};
+	};
+
+	__overrides__ {
+		gpiopin =       <&power_ctrl>,"gpios:4",
+				<&power_ctrl_pins>,"brcm,pins:0";
+		active_low =    <&power_ctrl>,"gpios:8";
+	};
+};

arch/arm/boot/dts/overlays/hifiberry-amp-overlay.dts

@@ -0,0 +1,39 @@
+// Definitions for HiFiBerry Amp/Amp+
+/dts-v1/;
+/plugin/;
+
+/ {
+	compatible = "brcm,bcm2708";
+
+	fragment@0 {
+		target = <&sound>;
+		__overlay__ {
+			compatible = "hifiberry,hifiberry-amp";
+			i2s-controller = <&i2s>;
+			status = "okay";
+		};
+	};
+
+	fragment@1 {
+		target = <&i2s>;
+		__overlay__ {
+			status = "okay";
+		};
+	};
+
+	fragment@2 {
+		target = <&i2c1>;
+		__overlay__ {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "okay";
+
+			tas5713@1b {
+				#sound-dai-cells = <0>;
+				compatible = "ti,tas5713";
+				reg = <0x1b>;
+				status = "okay";
+			};
+		};
+	};
+};

arch/arm/boot/dts/overlays/hifiberry-dac-overlay.dts

@@ -0,0 +1,34 @@
+// Definitions for HiFiBerry DAC
+/dts-v1/;
+/plugin/;
+
+/ {
+	compatible = "brcm,bcm2708";
+
+	fragment@0 {
+		target = <&sound>;
+		__overlay__ {
+			compatible = "hifiberry,hifiberry-dac";
+			i2s-controller = <&i2s>;
+			status = "okay";
+		};
+	};
+
+	fragment@1 {
+		target = <&i2s>;
+		__overlay__ {
+			status = "okay";
+		};
+	};
+
+	fragment@2 {
+		target-path = "/";
+		__overlay__ {
+			pcm5102a-codec {
+				#sound-dai-cells = <0>;
+				compatible = "ti,pcm5102a";
+				status = "okay";
+			};
+		};
+	};
+};

arch/arm/boot/dts/overlays/hifiberry-dacplus-overlay.dts

@@ -0,0 +1,39 @@
+// Definitions for HiFiBerry DAC+
+/dts-v1/;
+/plugin/;
+
+/ {
+	compatible = "brcm,bcm2708";
+
+	fragment@0 {
+		target = <&sound>;
+		__overlay__ {
+			compatible = "hifiberry,hifiberry-dacplus";
+			i2s-controller = <&i2s>;
+			status = "okay";
+		};
+	};
+
+	fragment@1 {
+		target = <&i2s>;
+		__overlay__ {
+			status = "okay";
+		};
+	};
+
+	fragment@2 {
+		target = <&i2c1>;
+		__overlay__ {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "okay";
+
+			pcm5122@4d {
+				#sound-dai-cells = <0>;
+				compatible = "ti,pcm5122";
+				reg = <0x4d>;
+				status = "okay";
+			};
+		};
+	};
+};

arch/arm/boot/dts/overlays/hifiberry-digi-overlay.dts

@@ -0,0 +1,39 @@
+// Definitions for HiFiBerry Digi
+/dts-v1/;
+/plugin/;
+
+/ {
+	compatible = "brcm,bcm2708";
+
+	fragment@0 {
+		target = <&sound>;
+		__overlay__ {
+			compatible = "hifiberry,hifiberry-digi";
+			i2s-controller = <&i2s>;
+			status = "okay";
+		};
+	};
+
+	fragment@1 {
+		target = <&i2s>;
+		__overlay__ {
+			status = "okay";
+		};
+	};
+
+	fragment@2 {
+		target = <&i2c1>;
+		__overlay__ {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "okay";
+
+			wm8804@3b {
+				#sound-dai-cells = <0>;
+				compatible = "wlf,wm8804";
+				reg = <0x3b>;
+				status = "okay";
+			};
+		};
+	};
+};

arch/arm/boot/dts/overlays/hy28a-overlay.dts

@@ -0,0 +1,87 @@
+/*
+ * Device Tree overlay for HY28A display
+ *
+ */
+
+/dts-v1/;
+/plugin/;
+
+/ {
+	compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709";
+
+	fragment@0 {
+		target = <&spi0>;
+		__overlay__ {
+			status = "okay";
+
+			spidev@0{
+				status = "disabled";
+			};
+
+			spidev@1{
+				status = "disabled";
+			};
+		};
+	};
+
+	fragment@1 {
+		target = <&gpio>;
+		__overlay__ {
+			hy28a_pins: hy28a_pins {
+				brcm,pins = <17 25 18>;
+				brcm,function = <0 1 1>; /* in out out */
+			};
+		};
+	};
+
+	fragment@2 {
+		target = <&spi0>;
+		__overlay__ {
+			/* needed to avoid dtc warning */
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			hy28a: hy28a@0{
+				compatible = "ilitek,ili9320";
+				reg = <0>;
+				pinctrl-names = "default";
+				pinctrl-0 = <&hy28a_pins>;
+
+				spi-max-frequency = <32000000>;
+				spi-cpol;
+				spi-cpha;
+				rotate = <270>;
+				bgr;
+				fps = <50>;
+				buswidth = <8>;
+				startbyte = <0x70>;
+				reset-gpios = <&gpio 25 0>;
+				led-gpios = <&gpio 18 1>;
+				debug = <0>;
+			};
+
+			hy28a_ts: hy28a-ts@1 {
+				compatible = "ti,ads7846";
+				reg = <1>;
+
+				spi-max-frequency = <2000000>;
+				interrupts = <17 2>; /* high-to-low edge triggered */
+				interrupt-parent = <&gpio>;
+				pendown-gpio = <&gpio 17 0>;
+				ti,x-plate-ohms = /bits/ 16 <100>;
+				ti,pressure-max = /bits/ 16 <255>;
+			};
+		};
+	};
+	__overrides__ {
+		speed =		<&hy28a>,"spi-max-frequency:0";
+		rotate =	<&hy28a>,"rotate:0";
+		fps =		<&hy28a>,"fps:0";
+		debug =		<&hy28a>,"debug:0";
+		xohms =		<&hy28a_ts>,"ti,x-plate-ohms;0";
+		resetgpio =	<&hy28a>,"reset-gpios:4",
+				<&hy28a_pins>, "brcm,pins:1";
+		ledgpio =	<&hy28a>,"led-gpios:4",
+				<&hy28a_pins>, "brcm,pins:2";
+	};
+};

arch/arm/boot/dts/overlays/hy28b-overlay.dts

@@ -0,0 +1,142 @@
+/*
+ * Device Tree overlay for HY28b display shield by Texy
+ *
+ */
+
+/dts-v1/;
+/plugin/;
+
+/ {
+	compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709";
+
+	fragment@0 {
+		target = <&spi0>;
+		__overlay__ {
+			status = "okay";
+
+			spidev@0{
+				status = "disabled";
+			};
+
+			spidev@1{
+				status = "disabled";
+			};
+		};
+	};
+
+	fragment@1 {
+		target = <&gpio>;
+		__overlay__ {
+			hy28b_pins: hy28b_pins {
+				brcm,pins = <17 25 18>;
+				brcm,function = <0 1 1>; /* in out out */
+			};
+		};
+	};
+
+	fragment@2 {
+		target = <&spi0>;
+		__overlay__ {
+			/* needed to avoid dtc warning */
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			hy28b: hy28b@0{
+				compatible = "ilitek,ili9325";
+				reg = <0>;
+				pinctrl-names = "default";
+				pinctrl-0 = <&hy28b_pins>;
+
+				spi-max-frequency = <48000000>;
+				spi-cpol;
+				spi-cpha;
+				rotate = <270>;
+				bgr;
+				fps = <50>;
+				buswidth = <8>;
+				startbyte = <0x70>;
+				reset-gpios = <&gpio 25 0>;
+				led-gpios = <&gpio 18 1>;
+
+				gamma = "04 1F 4 7 7 0 7 7 6 0\n0F 00 1 7 4 0 0 0 6 7";
+
+				init = <0x10000e7 0x0010
+					0x1000000 0x0001
+					0x1000001 0x0100
+					0x1000002 0x0700
+				        0x1000003 0x1030
+					0x1000004 0x0000
+					0x1000008 0x0207
+					0x1000009 0x0000
+				        0x100000a 0x0000
+					0x100000c 0x0001
+					0x100000d 0x0000
+					0x100000f 0x0000
+				        0x1000010 0x0000
+					0x1000011 0x0007
+					0x1000012 0x0000
+					0x1000013 0x0000
+				        0x2000032
+					0x1000010 0x1590
+					0x1000011 0x0227
+				        0x2000032
+					0x1000012 0x009c
+				        0x2000032
+				        0x1000013 0x1900
+					0x1000029 0x0023
+					0x100002b 0x000e
+				        0x2000032
+				        0x1000020 0x0000
+					0x1000021 0x0000
+				        0x2000032
+					0x1000050 0x0000
+				        0x1000051 0x00ef
+					0x1000052 0x0000
+					0x1000053 0x013f
+					0x1000060 0xa700
+				        0x1000061 0x0001
+					0x100006a 0x0000
+					0x1000080 0x0000
+					0x1000081 0x0000
+				        0x1000082 0x0000
+					0x1000083 0x0000
+					0x1000084 0x0000
+					0x1000085 0x0000
+				        0x1000090 0x0010
+					0x1000092 0x0000
+					0x1000093 0x0003
+					0x1000095 0x0110
+				        0x1000097 0x0000
+					0x1000098 0x0000
+					0x1000007 0x0133
+					0x1000020 0x0000
+				        0x1000021 0x0000
+				        0x2000064>;
+				debug = <0>;
+			};
+
+			hy28b_ts: hy28b-ts@1 {
+				compatible = "ti,ads7846";
+				reg = <1>;
+
+				spi-max-frequency = <2000000>;
+				interrupts = <17 2>; /* high-to-low edge triggered */
+				interrupt-parent = <&gpio>;
+				pendown-gpio = <&gpio 17 0>;
+				ti,x-plate-ohms = /bits/ 16 <100>;
+				ti,pressure-max = /bits/ 16 <255>;
+			};
+		};
+	};
+	__overrides__ {
+		speed = 	<&hy28b>,"spi-max-frequency:0";
+		rotate = 	<&hy28b>,"rotate:0";
+		fps = 		<&hy28b>,"fps:0";
+		debug = 	<&hy28b>,"debug:0";
+		xohms =		<&hy28b_ts>,"ti,x-plate-ohms;0";
+		resetgpio =	<&hy28b>,"reset-gpios:4",
+				<&hy28b_pins>, "brcm,pins:1";
+		ledgpio =	<&hy28b>,"led-gpios:4",
+				<&hy28b_pins>, "brcm,pins:2";
+	};
+};

arch/arm/boot/dts/overlays/i2c-rtc-overlay.dts

@@ -0,0 +1,55 @@
+// Definitions for several I2C based Real Time Clocks
+/dts-v1/;
+/plugin/;
+
+/ {
+	compatible = "brcm,bcm2708";
+
+	fragment@0 {
+		target = <&i2c_arm>;
+		__overlay__ {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "okay";
+
+			ds1307: ds1307@68 {
+				compatible = "maxim,ds1307";
+				reg = <0x68>;
+				status = "disable";
+			};
+			mcp7941x: mcp7941x@6f {
+				compatible = "microchip,mcp7941x";
+				reg = <0x6f>;
+				status = "disable";
+			};
+			ds3231: ds3231@68 {
+				compatible = "maxim,ds3231";
+				reg = <0x68>;
+				status = "disable";
+			};
+			pcf2127: pcf2127@51 {
+				compatible = "nxp,pcf2127";
+				reg = <0x51>;
+				status = "disable";
+			};
+			pcf8523: pcf8523@68 {
+				compatible = "nxp,pcf8523";
+				reg = <0x68>;
+				status = "disable";
+			};
+			pcf8563: pcf8563@51 {
+				compatible = "nxp,pcf8563";
+				reg = <0x51>;
+				status = "disable";
+			};
+		};
+	};
+	__overrides__ {
+		ds1307 = <&ds1307>,"status";
+		ds3231 = <&ds3231>,"status";
+		mcp7941x = <&mcp7941x>,"status";
+		pcf2127 = <&pcf2127>,"status";
+		pcf8523 = <&pcf8523>,"status";
+		pcf8563 = <&pcf8563>,"status";
+	};
+};

arch/arm/boot/dts/overlays/i2s-mmap-overlay.dts

@@ -0,0 +1,13 @@
+/dts-v1/;
+/plugin/;
+
+/{
+	compatible = "brcm,bcm2708";
+
+	fragment@0 {
+		target = <&i2s>;
+		__overlay__ {
+			brcm,enable-mmap;
+		};
+	};
+};

arch/arm/boot/dts/overlays/iqaudio-dac-overlay.dts

@@ -0,0 +1,39 @@
+// Definitions for IQaudIO DAC
+/dts-v1/;
+/plugin/;
+
+/ {
+	compatible = "brcm,bcm2708";
+
+	fragment@0 {
+		target = <&sound>;
+		__overlay__ {
+			compatible = "iqaudio,iqaudio-dac";
+			i2s-controller = <&i2s>;
+			status = "okay";
+		};
+	};
+
+	fragment@1 {
+		target = <&i2s>;
+		__overlay__ {
+			status = "okay";
+		};
+	};
+
+	fragment@2 {
+		target = <&i2c1>;
+		__overlay__ {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "okay";
+
+			pcm5122@4c {
+				#sound-dai-cells = <0>;
+				compatible = "ti,pcm5122";
+				reg = <0x4c>;
+				status = "okay";
+			};
+		};
+	};
+};

arch/arm/boot/dts/overlays/iqaudio-dacplus-overlay.dts

@@ -0,0 +1,39 @@
+// Definitions for IQaudIO DAC+
+/dts-v1/;
+/plugin/;
+
+/ {
+	compatible = "brcm,bcm2708";
+
+	fragment@0 {
+		target = <&sound>;
+		__overlay__ {
+			compatible = "iqaudio,iqaudio-dac";
+			i2s-controller = <&i2s>;
+			status = "okay";
+		};
+	};
+
+	fragment@1 {
+		target = <&i2s>;
+		__overlay__ {
+			status = "okay";
+		};
+	};
+
+	fragment@2 {
+		target = <&i2c1>;
+		__overlay__ {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "okay";
+
+			pcm5122@4c {
+				#sound-dai-cells = <0>;
+				compatible = "ti,pcm5122";
+				reg = <0x4c>;
+				status = "okay";
+			};
+		};
+	};
+};

arch/arm/boot/dts/overlays/lirc-rpi-overlay.dts

@@ -0,0 +1,57 @@
+// Definitions for lirc-rpi module
+/dts-v1/;
+/plugin/;
+
+/ {
+	compatible = "brcm,bcm2708";
+
+	fragment@0 {
+		target-path = "/";
+		__overlay__ {
+			lirc_rpi: lirc_rpi {
+				compatible = "rpi,lirc-rpi";
+				pinctrl-names = "default";
+				pinctrl-0 = <&lirc_pins>;
+				status = "okay";
+
+				// Override autodetection of IR receiver circuit
+				// (0 = active high, 1 = active low, -1 = no override )
+				rpi,sense = <0xffffffff>;
+
+				// Software carrier
+				// (0 = off, 1 = on)
+				rpi,softcarrier = <1>;
+
+				// Invert output
+				// (0 = off, 1 = on)
+				rpi,invert = <0>;
+
+				// Enable debugging messages
+				// (0 = off, 1 = on)
+				rpi,debug = <0>;
+			};
+		};
+	};
+
+	fragment@1 {
+		target = <&gpio>;
+		__overlay__ {
+			lirc_pins: lirc_pins {
+				brcm,pins = <17 18>;
+				brcm,function = <1 0>; // out in
+				brcm,pull = <0 1>; // off down
+			};
+		};
+	};
+
+	__overrides__ {
+		gpio_out_pin =  <&lirc_pins>,"brcm,pins:0";
+		gpio_in_pin =   <&lirc_pins>,"brcm,pins:4";
+		gpio_in_pull =  <&lirc_pins>,"brcm,pull:4";
+
+		sense =         <&lirc_rpi>,"rpi,sense:0";
+		softcarrier =   <&lirc_rpi>,"rpi,softcarrier:0";
+		invert =        <&lirc_rpi>,"rpi,invert:0";
+		debug =         <&lirc_rpi>,"rpi,debug:0";
+	};
+};

arch/arm/boot/dts/overlays/mcp2515-can0-overlay.dts

@@ -0,0 +1,69 @@
+/*
+ * Device tree overlay for mcp251x/can0 on spi0.0
+ */
+
+/dts-v1/;
+/plugin/;
+
+/ {
+    compatible = "brcm,bcm2835", "brcm,bcm2836", "brcm,bcm2708", "brcm,bcm2709";
+    /* disable spi-dev for spi0.0 */
+    fragment@0 {
+        target = <&spi0>;
+        __overlay__ {
+            status = "okay";
+            spidev@0{
+                status = "disabled";
+            };
+        };
+    };
+
+    /* the interrupt pin of the can-controller */
+    fragment@1 {
+        target = <&gpio>;
+        __overlay__ {
+            can0_pins: can0_pins {
+                brcm,pins = <25>;
+                brcm,function = <0>; /* input */
+            };
+        };
+    };
+
+    /* the clock/oscillator of the can-controller */
+    fragment@2 {
+        target-path = "/clocks";
+        __overlay__ {
+            /* external oscillator of mcp2515 on SPI0.0 */
+            can0_osc: can0_osc {
+                compatible = "fixed-clock";
+                #clock-cells = <0>;
+                clock-frequency  = <16000000>;
+            };
+        };
+    };
+
+    /* the spi config of the can-controller itself binding everything together */
+    fragment@3 {
+        target = <&spi0>;
+        __overlay__ {
+            /* needed to avoid dtc warning */
+            #address-cells = <1>;
+            #size-cells = <0>;
+            can0: mcp2515@0 {
+                reg = <0>;
+                compatible = "microchip,mcp2515";
+                pinctrl-names = "default";
+                pinctrl-0 = <&can0_pins>;
+                spi-max-frequency = <10000000>;
+                interrupt-parent = <&gpio>;
+                interrupts = <25 0x2>;
+                clocks = <&can0_osc>;
+            };
+        };
+    };
+    __overrides__ {
+        oscillator = <&can0_osc>,"clock-frequency:0";
+        spimaxfrequency = <&can0>,"spi-max-frequency:0";
+        interrupt = <&can0_pins>,"brcm,pins:0",<&can0>,"interrupts:0";
+    };
+};

arch/arm/boot/dts/overlays/mcp2515-can1-overlay.dts

@@ -0,0 +1,69 @@
+/*
+ * Device tree overlay for mcp251x/can1 on spi0.1 edited by petit_miner
+ */
+
+/dts-v1/;
+/plugin/;
+
+/ {
+    compatible = "brcm,bcm2835", "brcm,bcm2836", "brcm,bcm2708", "brcm,bcm2709";
+    /* disable spi-dev for spi0.1 */
+    fragment@0 {
+        target = <&spi0>;
+        __overlay__ {
+            status = "okay";
+            spidev@1{
+                status = "disabled";
+            };
+        };
+    };
+
+    /* the interrupt pin of the can-controller */
+    fragment@1 {
+        target = <&gpio>;
+        __overlay__ {
+            can1_pins: can1_pins {
+                brcm,pins = <25>;
+                brcm,function = <0>; /* input */
+            };
+        };
+    };
+
+    /* the clock/oscillator of the can-controller */
+    fragment@2 {
+        target-path = "/clocks";
+        __overlay__ {
+            /* external oscillator of mcp2515 on spi0.1 */
+            can1_osc: can1_osc {
+                compatible = "fixed-clock";
+                #clock-cells = <0>;
+                clock-frequency  = <16000000>;
+            };
+        };
+    };
+
+    /* the spi config of the can-controller itself binding everything together */
+    fragment@3 {
+        target = <&spi0>;
+        __overlay__ {
+            /* needed to avoid dtc warning */
+            #address-cells = <1>;
+            #size-cells = <0>;
+            can1: mcp2515@1 {
+                reg = <1>;
+                compatible = "microchip,mcp2515";
+                pinctrl-names = "default";
+                pinctrl-0 = <&can1_pins>;
+                spi-max-frequency = <10000000>;
+                interrupt-parent = <&gpio>;
+                interrupts = <25 0x2>;
+                clocks = <&can1_osc>;
+            };
+        };
+    };
+    __overrides__ {
+        oscillator = <&can1_osc>,"clock-frequency:0";
+        spimaxfrequency = <&can1>,"spi-max-frequency:0";
+        interrupt = <&can1_pins>,"brcm,pins:0",<&can1>,"interrupts:0";
+    };
+};

arch/arm/boot/dts/overlays/mmc-overlay.dts

@@ -0,0 +1,19 @@
+/dts-v1/;
+/plugin/;
+
+/{
+	compatible = "brcm,bcm2708";
+
+	fragment@0 {
+		target = <&mmc>;
+
+		__overlay__ {
+			brcm,overclock-50 = <0>;
+		};
+	};
+
+	__overrides__ {
+		overclock_50     = <&mmc>,"brcm,overclock-50:0";
+		force_pio        = <&mmc>,"brcm,force-pio?";
+	};
+};

arch/arm/boot/dts/overlays/mz61581-overlay.dts

@@ -0,0 +1,111 @@
+/*
+ * Device Tree overlay for MZ61581-PI-EXT 2014.12.28 by Tontec
+ *
+ */
+
+/dts-v1/;
+/plugin/;
+
+/ {
+	compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709";
+
+	fragment@0 {
+		target = <&spi0>;
+		__overlay__ {
+			/* does not work with spi-bcm2835 using software chip selects */
+			compatible = "brcm,bcm2708-spi";
+			status = "okay";
+
+			spidev@0{
+				status = "disabled";
+			};
+
+			spidev@1{
+				status = "disabled";
+			};
+		};
+	};
+
+	fragment@1 {
+		target = <&gpio>;
+		__overlay__ {
+			mz61581_pins: mz61581_pins {
+				brcm,pins = <4 15 18 25>;
+				brcm,function = <0 1 1 1>; /* in out out out */
+			};
+		};
+	};
+
+	fragment@2 {
+		target = <&spi0>;
+		__overlay__ {
+			/* needed to avoid dtc warning */
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			mz61581: mz61581@0{
+				compatible = "samsung,s6d02a1";
+				reg = <0>;
+				pinctrl-names = "default";
+				pinctrl-0 = <&mz61581_pins>;
+
+				spi-max-frequency = <128000000>;
+				spi-cpol;
+				spi-cpha;
+
+				width = <320>;
+				height = <480>;
+				rotate = <270>;
+				bgr;
+				fps = <30>;
+				buswidth = <8>;
+
+				reset-gpios = <&gpio 15 0>;
+				dc-gpios = <&gpio 25 0>;
+				led-gpios = <&gpio 18 0>;
+
+				init = <0x10000b0 00
+					0x1000011
+					0x20000ff
+					0x10000b3 0x02 0x00 0x00 0x00
+					0x10000c0 0x13 0x3b 0x00 0x02 0x00 0x01 0x00 0x43
+					0x10000c1 0x08 0x16 0x08 0x08
+					0x10000c4 0x11 0x07 0x03 0x03
+					0x10000c6 0x00
+					0x10000c8 0x03 0x03 0x13 0x5c 0x03 0x07 0x14 0x08 0x00 0x21 0x08 0x14 0x07 0x53 0x0c 0x13 0x03 0x03 0x21 0x00
+					0x1000035 0x00
+					0x1000036 0xa0
+					0x100003a 0x55
+					0x1000044 0x00 0x01
+					0x10000d0 0x07 0x07 0x1d 0x03
+					0x10000d1 0x03 0x30 0x10
+					0x10000d2 0x03 0x14 0x04
+					0x1000029
+					0x100002c>;
+
+				/* This is a workaround to make sure the init sequence slows down and doesn't fail */
+				debug = <3>;
+			};
+
+			mz61581_ts: mz61581_ts@1 {
+				compatible = "ti,ads7846";
+				reg = <1>;
+
+				spi-max-frequency = <2000000>;
+				interrupts = <4 2>; /* high-to-low edge triggered */
+				interrupt-parent = <&gpio>;
+				pendown-gpio = <&gpio 4 0>;
+
+				ti,x-plate-ohms = /bits/ 16 <60>;
+				ti,pressure-max = /bits/ 16 <255>;
+			};
+		};
+	};
+	__overrides__ {
+		speed =   <&mz61581>, "spi-max-frequency:0";
+		rotate =  <&mz61581>, "rotate:0";
+		fps =     <&mz61581>, "fps:0";
+		debug =   <&mz61581>, "debug:0";
+		xohms =   <&mz61581_ts>,"ti,x-plate-ohms;0";
+	};
+};

arch/arm/boot/dts/overlays/piscreen-overlay.dts

@@ -0,0 +1,96 @@
+/*
+ * Device Tree overlay for PiScreen 3.5" display shield by Ozzmaker
+ *
+ */
+
+/dts-v1/;
+/plugin/;
+
+/ {
+	compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709";
+
+	fragment@0 {
+		target = <&spi0>;
+		__overlay__ {
+			status = "okay";
+
+			spidev@0{
+				status = "disabled";
+			};
+
+			spidev@1{
+				status = "disabled";
+			};
+		};
+	};
+
+	fragment@1 {
+		target = <&gpio>;
+		__overlay__ {
+			piscreen_pins: piscreen_pins {
+				brcm,pins = <17 25 24 22>;
+				brcm,function = <0 1 1 1>; /* in out out out */
+			};
+		};
+	};
+
+	fragment@2 {
+		target = <&spi0>;
+		__overlay__ {
+			/* needed to avoid dtc warning */
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			piscreen: piscreen@0{
+				compatible = "ilitek,ili9486";
+				reg = <0>;
+				pinctrl-names = "default";
+				pinctrl-0 = <&piscreen_pins>;
+
+				spi-max-frequency = <24000000>;
+				rotate = <270>;
+				bgr;
+				fps = <30>;
+				buswidth = <8>;
+				regwidth = <16>;
+				reset-gpios = <&gpio 25 0>;
+				dc-gpios = <&gpio 24 0>;
+				led-gpios = <&gpio 22 1>;
+				debug = <0>;
+
+				init = <0x10000b0 0x00
+				        0x1000011
+					0x20000ff
+					0x100003a 0x55
+					0x1000036 0x28
+					0x10000c2 0x44
+					0x10000c5 0x00 0x00 0x00 0x00
+					0x10000e0 0x0f 0x1f 0x1c 0x0c 0x0f 0x08 0x48 0x98 0x37 0x0a 0x13 0x04 0x11 0x0d 0x00
+					0x10000e1 0x0f 0x32 0x2e 0x0b 0x0d 0x05 0x47 0x75 0x37 0x06 0x10 0x03 0x24 0x20 0x00
+					0x10000e2 0x0f 0x32 0x2e 0x0b 0x0d 0x05 0x47 0x75 0x37 0x06 0x10 0x03 0x24 0x20 0x00
+					0x1000011
+					0x1000029>;
+			};
+
+			piscreen_ts: piscreen-ts@1 {
+				compatible = "ti,ads7846";
+				reg = <1>;
+
+				spi-max-frequency = <2000000>;
+				interrupts = <17 2>; /* high-to-low edge triggered */
+				interrupt-parent = <&gpio>;
+				pendown-gpio = <&gpio 17 0>;
+				ti,swap-xy;
+				ti,x-plate-ohms = /bits/ 16 <100>;
+				ti,pressure-max = /bits/ 16 <255>;
+			};
+		};
+	};
+	__overrides__ {
+		speed =		<&piscreen>,"spi-max-frequency:0";
+		rotate =	<&piscreen>,"rotate:0";
+		fps =		<&piscreen>,"fps:0";
+		debug =		<&piscreen>,"debug:0";
+		xohms =		<&piscreen_ts>,"ti,x-plate-ohms;0";
+	};
+};

arch/arm/boot/dts/overlays/pitft28-resistive-overlay.dts

@@ -0,0 +1,115 @@
+/*
+ * Device Tree overlay for Adafruit PiTFT 2.8" resistive touch screen
+ *
+ */
+
+/dts-v1/;
+/plugin/;
+
+/ {
+	compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709";
+
+	fragment@0 {
+		target = <&spi0>;
+		__overlay__ {
+			status = "okay";
+
+			spidev@0{
+				status = "disabled";
+			};
+
+			spidev@1{
+				status = "disabled";
+			};
+		};
+	};
+
+	fragment@1 {
+		target = <&gpio>;
+		__overlay__ {
+			pitft_pins: pitft_pins {
+				brcm,pins = <24 25>;
+				brcm,function = <0 1>; /* in out */
+				brcm,pull = <2 0>; /* pullup none */
+			};
+		};
+	};
+
+	fragment@2 {
+		target = <&spi0>;
+		__overlay__ {
+			/* needed to avoid dtc warning */
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			pitft: pitft@0{
+				compatible = "ilitek,ili9340";
+				reg = <0>;
+				pinctrl-names = "default";
+				pinctrl-0 = <&pitft_pins>;
+
+				spi-max-frequency = <32000000>;
+				rotate = <90>;
+				fps = <25>;
+				bgr;
+				buswidth = <8>;
+				dc-gpios = <&gpio 25 0>;
+				debug = <0>;
+			};
+
+			pitft_ts@1 {
+				#address-cells = <1>;
+				#size-cells = <0>;
+				compatible = "st,stmpe610";
+				reg = <1>;
+
+				spi-max-frequency = <500000>;
+				irq-gpio = <&gpio 24 0x2>; /* IRQF_TRIGGER_FALLING */
+				interrupts = <24 2>; /* high-to-low edge triggered */
+				interrupt-parent = <&gpio>;
+				interrupt-controller;
+
+				stmpe_touchscreen {
+					compatible = "st,stmpe-ts";
+					st,sample-time = <4>;
+					st,mod-12b = <1>;
+					st,ref-sel = <0>;
+					st,adc-freq = <2>;
+					st,ave-ctrl = <3>;
+					st,touch-det-delay = <4>;
+					st,settling = <2>;
+					st,fraction-z = <7>;
+					st,i-drive = <0>;
+				};
+
+				stmpe_gpio: stmpe_gpio {
+					#gpio-cells = <2>;
+					compatible = "st,stmpe-gpio";
+					/*
+					 * only GPIO2 is wired/available
+					 * and it is wired to the backlight
+					 */
+					st,norequest-mask = <0x7b>;
+				};
+			};
+		};
+	};
+
+	fragment@3 {
+		target-path = "/soc";
+		__overlay__ {
+			backlight {
+				compatible = "gpio-backlight";
+				gpios = <&stmpe_gpio 2 0>;
+				default-on;
+			};
+		};
+	};
+
+	__overrides__ {
+		speed =   <&pitft>,"spi-max-frequency:0";
+		rotate =  <&pitft>,"rotate:0";
+		fps =     <&pitft>,"fps:0";
+		debug =   <&pitft>,"debug:0";
+	};
+};

arch/arm/boot/dts/overlays/pps-gpio-overlay.dts

@@ -0,0 +1,34 @@
+/dts-v1/;
+/plugin/;
+
+/ {
+	compatible = "brcm,bcm2708";
+	fragment@0 {
+		target-path = "/";
+		__overlay__ {
+			pps: pps {
+				compatible = "pps-gpio";
+				pinctrl-names = "default";
+				pinctrl-0 = <&pps_pins>;
+				gpios = <&gpio 18 0>;
+				status = "okay";
+			};
+		};
+	};
+
+	fragment@1 {
+		target = <&gpio>;
+		__overlay__ {
+			pps_pins: pps_pins {
+				brcm,pins =     <18>;
+				brcm,function = <0>;    // in
+				brcm,pull =     <0>;    // off
+			};
+		};
+	};
+
+	__overrides__ {
+		gpiopin = <&pps>,"gpios:4",
+			  <&pps_pins>,"brcm,pins:0";
+	};
+};

arch/arm/boot/dts/overlays/rpi-dac-overlay.dts

@@ -0,0 +1,34 @@
+// Definitions for RPi DAC
+/dts-v1/;
+/plugin/;
+
+/ {
+	compatible = "brcm,bcm2708";
+
+	fragment@0 {
+		target = <&sound>;
+		__overlay__ {
+			compatible = "rpi,rpi-dac";
+			i2s-controller = <&i2s>;
+			status = "okay";
+		};
+	};
+
+	fragment@1 {
+		target = <&i2s>;
+		__overlay__ {
+			status = "okay";
+		};
+	};
+
+	fragment@2 {
+		target-path = "/";
+		__overlay__ {
+			pcm1794a-codec {
+				#sound-dai-cells = <0>;
+				compatible = "ti,pcm1794a";
+				status = "okay";
+			};
+		};
+	};
+};

arch/arm/boot/dts/overlays/rpi-display-overlay.dts

@@ -0,0 +1,82 @@
+/*
+ * Device Tree overlay for rpi-display by Watterott
+ *
+ */
+
+/dts-v1/;
+/plugin/;
+
+/ {
+	compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709";
+
+	fragment@0 {
+		target = <&spi0>;
+		__overlay__ {
+			status = "okay";
+
+			spidev@0{
+				status = "disabled";
+			};
+
+			spidev@1{
+				status = "disabled";
+			};
+		};
+	};
+
+	fragment@1 {
+		target = <&gpio>;
+		__overlay__ {
+			rpi_display_pins: rpi_display_pins {
+				brcm,pins = <18 23 24 25>;
+				brcm,function = <1 1 1 0>; /* out out out in */
+				brcm,pull = <0 0 0 2>; /* - - - up */
+			};
+		};
+	};
+
+	fragment@2 {
+		target = <&spi0>;
+		__overlay__ {
+			/* needed to avoid dtc warning */
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			rpidisplay: rpi-display@0{
+				compatible = "ilitek,ili9341";
+				reg = <0>;
+				pinctrl-names = "default";
+				pinctrl-0 = <&rpi_display_pins>;
+
+				spi-max-frequency = <32000000>;
+				rotate = <270>;
+				bgr;
+				fps = <30>;
+				buswidth = <8>;
+				reset-gpios = <&gpio 23 0>;
+				dc-gpios = <&gpio 24 0>;
+				led-gpios = <&gpio 18 1>;
+				debug = <0>;
+			};
+
+			rpidisplay_ts: rpi-display-ts@1 {
+				compatible = "ti,ads7846";
+				reg = <1>;
+
+				spi-max-frequency = <2000000>;
+				interrupts = <25 2>; /* high-to-low edge triggered */
+				interrupt-parent = <&gpio>;
+				pendown-gpio = <&gpio 25 0>;
+				ti,x-plate-ohms = /bits/ 16 <60>;
+				ti,pressure-max = /bits/ 16 <255>;
+			};
+		};
+	};
+	__overrides__ {
+		speed =   <&rpidisplay>,"spi-max-frequency:0";
+		rotate =  <&rpidisplay>,"rotate:0";
+		fps =     <&rpidisplay>,"fps:0";
+		debug =   <&rpidisplay>,"debug:0";
+		xohms =   <&rpidisplay_ts>,"ti,x-plate-ohms;0";
+	};
+};

arch/arm/boot/dts/overlays/rpi-ft5406-overlay.dts

@@ -0,0 +1,16 @@
+/dts-v1/;
+/plugin/;
+
+/ {
+	compatible = "brcm,bcm2708";
+
+	fragment@0 {
+		target-path = "/";
+		__overlay__ {
+			rpi_ft5406: rpi_ft5406 {
+				compatible = "rpi,rpi-ft5406";
+				status = "okay";
+			};
+		};
+	};
+};

arch/arm/boot/dts/overlays/rpi-proto-overlay.dts

@@ -0,0 +1,39 @@
+// Definitions for Rpi-Proto
+/dts-v1/;
+/plugin/;
+
+/ {
+	compatible = "brcm,bcm2708";
+
+	fragment@0 {
+		target = <&sound>;
+		__overlay__ {
+			compatible = "rpi,rpi-proto";
+			i2s-controller = <&i2s>;
+			status = "okay";
+		};
+	};
+
+	fragment@1 {
+		target = <&i2s>;
+		__overlay__ {
+			status = "okay";
+		};
+	};
+
+	fragment@2 {
+		target = <&i2c1>;
+		__overlay__ {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "okay";
+
+			wm8731@1a {
+				#sound-dai-cells = <0>;
+				compatible = "wlf,wm8731";
+				reg = <0x1a>;
+				status = "okay";
+			};
+		};
+	};
+};

arch/arm/boot/dts/overlays/rpi-sense-overlay.dts

@@ -0,0 +1,47 @@
+// rpi-sense HAT
+/dts-v1/;
+/plugin/;
+
+/ {
+	compatible = "brcm,bcm2708", "brcm,bcm2709";
+
+	fragment@0 {
+		target = <&i2c1>;
+		__overlay__ {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "okay";
+
+			rpi-sense@46 {
+				compatible = "rpi,rpi-sense";
+				reg = <0x46>;
+				keys-int-gpios = <&gpio 23 1>;
+				status = "okay";
+			};
+
+			lsm9ds1-magn@1c {
+				compatible = "st,lsm9ds1-magn";
+				reg = <0x1c>;
+				status = "okay";
+			};
+
+			lsm9ds1-accel6a {
+				compatible = "st,lsm9ds1-accel";
+				reg = <0x6a>;
+				status = "okay";
+			};
+
+			lps25h-press@5c {
+				compatible = "st,lps25h-press";
+				reg = <0x5c>;
+				status = "okay";
+			};
+
+			hts221-humid@5f {
+				compatible = "st,hts221-humid";
+				reg = <0x5f>;
+				status = "okay";
+			};
+		};
+	};
+};

arch/arm/boot/dts/overlays/sdhost-overlay.dts

@@ -0,0 +1,56 @@
+/dts-v1/;
+/plugin/;
+
+/{
+	compatible = "brcm,bcm2708";
+
+	fragment@0 {
+		target = <&soc>;
+		__overlay__ {
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			sdhost: sdhost@7e202000 {
+				compatible = "brcm,bcm2835-sdhost";
+				reg = <0x7e202000 0x100>;
+				pinctrl-names = "default";
+				pinctrl-0 = <&sdhost_pins>;
+				interrupts = <2 24>;
+				clocks = <&clk_core>;
+				dmas = <&dma 13>,
+				       <&dma 13>;
+				dma-names = "tx", "rx";
+				brcm,delay-after-stop = <0>;
+				brcm,overclock-50 = <0>;
+				brcm,pio-limit = <1>;
+				status = "okay";
+			};
+		};
+	};
+
+	fragment@1 {
+		target = <&gpio>;
+		__overlay__ {
+			sdhost_pins: sdhost_pins {
+				brcm,pins = <48 49 50 51 52 53>;
+				brcm,function = <4>; /* alt0 */
+			};
+		};
+	};
+
+	fragment@2 {
+		target = <&mmc>;
+		__overlay__ {
+			/* Find a way to disable the other driver */
+			compatible = "";
+			status = "disabled";
+		};
+	};
+
+	__overrides__ {
+		overclock_50     = <&sdhost>,"brcm,overclock-50:0";
+		force_pio        = <&sdhost>,"brcm,force-pio?";
+		pio_limit        = <&sdhost>,"brcm,pio-limit:0";
+		debug            = <&sdhost>,"brcm,debug?";
+	};
+};

arch/arm/boot/dts/overlays/spi-bcm2708-overlay.dts

@@ -0,0 +1,18 @@
+/*
+ * Device tree overlay for spi-bcm2835
+ */
+
+/dts-v1/;
+/plugin/;
+
+/ {
+	compatible = "brcm,bcm2835", "brcm,bcm2836", "brcm,bcm2708", "brcm,bcm2709";
+	/* setting up compatiblity to allow loading the spi-bcm2835 driver */
+	fragment@0 {
+		target = <&spi0>;
+		__overlay__ {
+			status = "okay";
+			compatible = "brcm,bcm2708-spi";
+		};
+	};
+};

arch/arm/boot/dts/overlays/spi-bcm2835-overlay.dts

@@ -0,0 +1,18 @@
+/*
+ * Device tree overlay for spi-bcm2835
+ */
+
+/dts-v1/;
+/plugin/;
+
+/ {
+	compatible = "brcm,bcm2835", "brcm,bcm2836", "brcm,bcm2708", "brcm,bcm2709";
+	/* setting up compatiblity to allow loading the spi-bcm2835 driver */
+	fragment@0 {
+		target = <&spi0>;
+		__overlay__ {
+			status = "okay";
+			compatible = "brcm,bcm2835-spi";
+		};
+	};
+};

arch/arm/boot/dts/overlays/spi-dma-overlay.dts

@@ -0,0 +1,20 @@
+/*
+ * Device tree overlay for spi-bcm2835 to allow dma
+ */
+
+/dts-v1/;
+/plugin/;
+
+/ {
+	compatible = "brcm,bcm2835", "brcm,bcm2836", "brcm,bcm2708", "brcm,bcm2709";
+
+	fragment@0 {
+		target = <&spi0>;
+		__overlay__ {
+			#address-cells = <1>;
+			#size-cells = <0>;
+			dmas = <&dma 6>, <&dma 7>;
+			dma-names = "tx", "rx";
+		};
+	};
+ };

arch/arm/boot/dts/overlays/tinylcd35-overlay.dts

@@ -0,0 +1,216 @@
+/*
+ * tinylcd35-overlay.dts
+ *
+ * -------------------------------------------------
+ * www.tinlylcd.com
+ * -------------------------------------------------
+ * Device---Driver-----BUS       GPIO's
+ * display  tinylcd35  spi0.0    25 24 18
+ * touch    ads7846    spi0.1    5
+ * rtc      ds1307     i2c1-0068
+ * rtc      pcf8563    i2c1-0051
+ * keypad   gpio-keys  --------- 17 22 27 23 28
+ *
+ *
+ * TinyLCD.com 3.5 inch TFT
+ *
+ *  Version 001
+ *  5/3/2015  -- Noralf Trønnes     Initial Device tree framework
+ *  10/3/2015 -- tinylcd@gmail.com  added ds1307 support.
+ *
+ */
+
+/dts-v1/;
+/plugin/;
+
+/ {
+	compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709";
+
+	fragment@0 {
+		target = <&spi0>;
+		__overlay__ {
+			status = "okay";
+
+			spidev@0{
+				status = "disabled";
+			};
+
+			spidev@1{
+				status = "disabled";
+			};
+		};
+	};
+
+	fragment@1 {
+		target = <&gpio>;
+		__overlay__ {
+			tinylcd35_pins: tinylcd35_pins {
+				brcm,pins = <25 24 18>;
+				brcm,function = <1>; /* out */
+			};
+			tinylcd35_ts_pins: tinylcd35_ts_pins {
+				brcm,pins = <5>;
+				brcm,function = <0>; /* in */
+			};
+			keypad_pins: keypad_pins {
+				brcm,pins = <4 17 22 23 27>;
+				brcm,function = <0>; /* in */
+				brcm,pull = <1>; /* down */
+			};
+		};
+	};
+
+	fragment@2 {
+		target = <&spi0>;
+		__overlay__ {
+			/* needed to avoid dtc warning */
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			tinylcd35: tinylcd35@0{
+				compatible = "neosec,tinylcd";
+				reg = <0>;
+				pinctrl-names = "default";
+				pinctrl-0 = <&tinylcd35_pins>,
+					    <&tinylcd35_ts_pins>;
+
+				spi-max-frequency = <48000000>;
+				rotate = <270>;
+				fps = <20>;
+				bgr;
+				buswidth = <8>;
+				reset-gpios = <&gpio 25 0>;
+				dc-gpios = <&gpio 24 0>;
+				led-gpios = <&gpio 18 1>;
+				debug = <0>;
+
+				init = <0x10000B0 0x80
+					0x10000C0 0x0A 0x0A
+					0x10000C1 0x01 0x01
+					0x10000C2 0x33
+					0x10000C5 0x00 0x42 0x80
+					0x10000B1 0xD0 0x11
+					0x10000B4 0x02
+					0x10000B6 0x00 0x22 0x3B
+					0x10000B7 0x07
+					0x1000036 0x58
+					0x10000F0 0x36 0xA5 0xD3
+					0x10000E5 0x80
+					0x10000E5 0x01
+					0x10000B3 0x00
+					0x10000E5 0x00
+					0x10000F0 0x36 0xA5 0x53
+					0x10000E0 0x00 0x35 0x33 0x00 0x00 0x00 0x00 0x35 0x33 0x00 0x00 0x00
+					0x100003A 0x55
+					0x1000011
+					0x2000001
+					0x1000029>;
+			};
+
+			tinylcd35_ts: tinylcd35_ts@1 {
+				compatible = "ti,ads7846";
+				reg = <1>;
+				status = "disabled";
+
+				spi-max-frequency = <2000000>;
+				interrupts = <5 2>; /* high-to-low edge triggered */
+				interrupt-parent = <&gpio>;
+				pendown-gpio = <&gpio 5 0>;
+				ti,x-plate-ohms = /bits/ 16 <100>;
+				ti,pressure-max = /bits/ 16 <255>;
+			};
+		};
+	};
+
+	/*  RTC    */
+
+	fragment@3 {
+		target = <&i2c1>;
+		__overlay__ {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			pcf8563: pcf8563@51 {
+				compatible = "nxp,pcf8563";
+				reg = <0x51>;
+				status = "disabled";
+			};
+		};
+	};
+
+	fragment@4 {
+		target = <&i2c1>;
+		__overlay__ {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			ds1307: ds1307@68 {
+				compatible = "maxim,ds1307";
+				reg = <0x68>;
+				status = "disabled";
+			};
+		};
+	};
+
+	/*
+	 * Values for input event code is found under the
+	 * 'Keys and buttons' heading in include/uapi/linux/input.h
+	 */
+	fragment@5 {
+		target-path = "/soc";
+		__overlay__ {
+			keypad: keypad {
+				compatible = "gpio-keys";
+				#address-cells = <1>;
+				#size-cells = <0>;
+				pinctrl-names = "default";
+				pinctrl-0 = <&keypad_pins>;
+				status = "disabled";
+				autorepeat;
+
+				button@17 {
+					label = "GPIO KEY_UP";
+					linux,code = <103>;
+					gpios = <&gpio 17 0>;
+				};
+				button@22 {
+					label = "GPIO KEY_DOWN";
+					linux,code = <108>;
+					gpios = <&gpio 22 0>;
+				};
+				button@27 {
+					label = "GPIO KEY_LEFT";
+					linux,code = <105>;
+					gpios = <&gpio 27 0>;
+				};
+				button@23 {
+					label = "GPIO KEY_RIGHT";
+					linux,code = <106>;
+					gpios = <&gpio 23 0>;
+				};
+				button@4 {
+					label = "GPIO KEY_ENTER";
+					linux,code = <28>;
+					gpios = <&gpio 4 0>;
+				};
+			};
+		};
+	};
+
+	__overrides__ {
+		speed =      <&tinylcd35>,"spi-max-frequency:0";
+		rotate =     <&tinylcd35>,"rotate:0";
+		fps =        <&tinylcd35>,"fps:0";
+		debug =      <&tinylcd35>,"debug:0";
+		touch =      <&tinylcd35_ts>,"status";
+		touchgpio =  <&tinylcd35_ts_pins>,"brcm,pins:0",
+			     <&tinylcd35_ts>,"interrupts:0",
+			     <&tinylcd35_ts>,"pendown-gpio:4";
+		xohms =      <&tinylcd35_ts>,"ti,x-plate-ohms;0";
+		rtc-pcf =    <&i2c1>,"status",
+			     <&pcf8563>,"status";
+		rtc-ds =     <&i2c1>,"status",
+			     <&ds1307>,"status";
+		keypad =     <&keypad>,"status";
+	};
+};

arch/arm/boot/dts/overlays/uart1-overlay.dts

@@ -0,0 +1,38 @@
+/dts-v1/;
+/plugin/;
+
+/{
+	compatible = "brcm,bcm2708";
+
+	fragment@0 {
+		target = <&uart1>;
+		__overlay__ {
+			pinctrl-names = "default";
+			pinctrl-0 = <&uart1_pins>;
+			status = "okay";
+		};
+	};
+
+	fragment@1 {
+		target = <&gpio>;
+		__overlay__ {
+			uart1_pins: uart1_pins {
+				brcm,pins = <14 15>;
+				brcm,function = <2>; /* alt5 */
+				brcm,pull = <0 2>;
+			};
+		};
+	};
+
+	fragment@2 {
+		target-path = "/chosen";
+		__overlay__ {
+			bootargs = "8250.nr_uarts=1";
+		};
+	};
+
+	__overrides__ {
+		txd1_pin = <&uart1_pins>,"brcm,pins:0";
+		rxd1_pin = <&uart1_pins>,"brcm,pins:4";
+	};
+};

arch/arm/boot/dts/overlays/vga666-overlay.dts

@@ -0,0 +1,30 @@
+/dts-v1/;
+/plugin/;
+
+/{
+	compatible = "brcm,bcm2708";
+
+	// There is no VGA driver module, but we need a platform device
+	// node (that doesn't already use pinctrl) to hang the pinctrl
+	// reference on - leds will do
+
+	fragment@0 {
+		target = <&leds>;
+		__overlay__ {
+			pinctrl-names = "default";
+			pinctrl-0 = <&vga666_pins>;
+		};
+	};
+
+	fragment@1 {
+		target = <&gpio>;
+		__overlay__ {
+			vga666_pins: vga666_pins {
+				brcm,pins = <2 3 4 5 6 7 8 9 10 11 12
+					     13 14 15 16 17 18 19 20 21>;
+				brcm,function = <6>; /* alt2 */
+				brcm,pull = <0>; /* no pull */
+			};
+		};
+	};
+};

arch/arm/boot/dts/overlays/w1-gpio-overlay.dts

@@ -0,0 +1,39 @@
+// Definitions for w1-gpio module (without external pullup)
+/dts-v1/;
+/plugin/;
+
+/ {
+	compatible = "brcm,bcm2708";
+
+	fragment@0 {
+		target-path = "/";
+		__overlay__ {
+
+			w1: onewire@0 {
+				compatible = "w1-gpio";
+				pinctrl-names = "default";
+				pinctrl-0 = <&w1_pins>;
+				gpios = <&gpio 4 0>;
+				rpi,parasitic-power = <0>;
+				status = "okay";
+			};
+		};
+	};
+
+	fragment@1 {
+		target = <&gpio>;
+		__overlay__ {
+			w1_pins: w1_pins {
+				brcm,pins = <4>;
+				brcm,function = <0>; // in (initially)
+				brcm,pull = <0>; // off
+			};
+		};
+	};
+
+	__overrides__ {
+		gpiopin =       <&w1>,"gpios:4",
+				<&w1_pins>,"brcm,pins:0";
+		pullup =        <&w1>,"rpi,parasitic-power:0";
+	};
+};

arch/arm/boot/dts/overlays/w1-gpio-pullup-overlay.dts

@@ -0,0 +1,41 @@
+// Definitions for w1-gpio module (with external pullup)
+/dts-v1/;
+/plugin/;
+
+/ {
+	compatible = "brcm,bcm2708";
+
+	fragment@0 {
+		target-path = "/";
+		__overlay__ {
+
+			w1: onewire@0 {
+				compatible = "w1-gpio";
+				pinctrl-names = "default";
+				pinctrl-0 = <&w1_pins>;
+				gpios = <&gpio 4 0>, <&gpio 5 1>;
+				rpi,parasitic-power = <0>;
+				status = "okay";
+			};
+		};
+	};
+
+	fragment@1 {
+		target = <&gpio>;
+		__overlay__ {
+			w1_pins: w1_pins {
+				brcm,pins = <4 5>;
+				brcm,function = <0 1>; // in out
+				brcm,pull = <0 0>; // off off
+			};
+		};
+	};
+
+	__overrides__ {
+		gpiopin =       <&w1>,"gpios:4",
+				<&w1_pins>,"brcm,pins:0";
+		extpullup =     <&w1>,"gpios:16",
+				<&w1_pins>,"brcm,pins:4";
+		pullup =        <&w1>,"rpi,parasitic-power:0";
+	};
+};

arch/arm/boot/dts/ste-dbx5x0.dtsi

@@ -1017,23 +1017,6 @@
 			status = "disabled";
 		};
 
-		vmmci: regulator-gpio {
-			compatible = "regulator-gpio";
-
-			regulator-min-microvolt = <1800000>;
-			regulator-max-microvolt = <2900000>;
-			regulator-name = "mmci-reg";
-			regulator-type = "voltage";
-
-			startup-delay-us = <100>;
-			enable-active-high;
-
-			states = <1800000 0x1
-				  2900000 0x0>;
-
-			status = "disabled";
-		};
-
 		mcde@a0350000 {
 			compatible = "stericsson,mcde";
 			reg = <0xa0350000 0x1000>, /* MCDE */

arch/arm/boot/dts/ste-href.dtsi

@@ -111,6 +111,21 @@
 			pinctrl-1 = <&i2c3_sleep_mode>;
 		};
 
+		vmmci: regulator-gpio {
+			compatible = "regulator-gpio";
+
+			regulator-min-microvolt = <1800000>;
+			regulator-max-microvolt = <2900000>;
+			regulator-name = "mmci-reg";
+			regulator-type = "voltage";
+
+			startup-delay-us = <100>;
+			enable-active-high;
+
+			states = <1800000 0x1
+				  2900000 0x0>;
+		};
+
 		// External Micro SD slot
 		sdi0_per1@80126000 {
 			arm,primecell-periphid = <0x10480180>;

arch/arm/boot/dts/ste-snowball.dts

@@ -146,8 +146,21 @@
 		};
 
 		vmmci: regulator-gpio {
+			compatible = "regulator-gpio";
+
 			gpios = <&gpio7 4 0x4>;
 			enable-gpio = <&gpio6 25 0x4>;
+
+			regulator-min-microvolt = <1800000>;
+			regulator-max-microvolt = <2900000>;
+			regulator-name = "mmci-reg";
+			regulator-type = "voltage";
+
+			startup-delay-us = <100>;
+			enable-active-high;
+
+			states = <1800000 0x1
+				  2900000 0x0>;
 		};
 
 		// External Micro SD slot

arch/arm/include/asm/elf.h

@@ -115,7 +115,7 @@ int dump_task_regs(struct task_struct *t, elf_gregset_t *elfregs);
    the loader.  We need to make sure that it is out of the way of the program
    that it will "exec", and that there is sufficient room for the brk.  */
 
-#define ELF_ET_DYN_BASE	(2 * TASK_SIZE / 3)
+#define ELF_ET_DYN_BASE	(TASK_SIZE / 3 * 2)
 
 /* When the program starts, a1 contains a pointer to a function to be 
    registered with atexit, as per the SVR4 ABI.  A value of 0 means we