Commit Graph

6624 Commits

Author SHA1 Message Date
Mike Rapoport
5e545df329 arm: remove CONFIG_ARCH_HAS_HOLES_MEMORYMODEL
ARM is the only architecture that defines CONFIG_ARCH_HAS_HOLES_MEMORYMODEL
which in turn enables memmap_valid_within() function that is intended to
verify existence  of struct page associated with a pfn when there are holes
in the memory map.

However, the ARCH_HAS_HOLES_MEMORYMODEL also enables HAVE_ARCH_PFN_VALID
and arch-specific pfn_valid() implementation that also deals with the holes
in the memory map.

The only two users of memmap_valid_within() call this function after
a call to pfn_valid() so the memmap_valid_within() check becomes redundant.

Remove CONFIG_ARCH_HAS_HOLES_MEMORYMODEL and memmap_valid_within() and rely
entirely on ARM's implementation of pfn_valid() that is now enabled
unconditionally.

Link: https://lkml.kernel.org/r/20201101170454.9567-9-rppt@kernel.org
Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Greg Ungerer <gerg@linux-m68k.org>
Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Meelis Roos <mroos@linux.ee>
Cc: Michael Schmitz <schmitzmic@gmail.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Vineet Gupta <vgupta@synopsys.com>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-12-15 12:13:42 -08:00
Carl Philipp Klemm
c0bc969c17 ARM: omap2: pmic-cpcap: fix maximum voltage to be consistent with defaults on xt875
xt875 comes up with a iva voltage of 1375000 and android runs at this too. fix
maximum voltage to be consistent with this.

Signed-off-by: Carl Philipp Klemm <philipp@uvos.xyz>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2020-12-08 15:56:24 +02:00
Andreas Kemnade
ec76c2eea9 ARM: OMAP2+: omap_device: fix idling of devices during probe
On the GTA04A5 od->_driver_status was not set to BUS_NOTIFY_BIND_DRIVER
during probe of the second mmc used for wifi. Therefore
omap_device_late_idle idled the device during probing causing oopses when
accessing the registers.

It was not set because od->_state was set to OMAP_DEVICE_STATE_IDLE
in the notifier callback. Therefore set od->_driver_status also in that
case.

This came apparent after commit 21b2cec61c ("mmc: Set
PROBE_PREFER_ASYNCHRONOUS for drivers that existed in v4.4") causing this
oops:

omap_hsmmc 480b4000.mmc: omap_device_late_idle: enabled but no driver.  Idling
8<--- cut here ---
Unhandled fault: external abort on non-linefetch (0x1028) at 0xfa0b402c
...
(omap_hsmmc_set_bus_width) from [<c07996bc>] (omap_hsmmc_set_ios+0x11c/0x258)
(omap_hsmmc_set_ios) from [<c077b2b0>] (mmc_power_up.part.8+0x3c/0xd0)
(mmc_power_up.part.8) from [<c077c14c>] (mmc_start_host+0x88/0x9c)
(mmc_start_host) from [<c077d284>] (mmc_add_host+0x58/0x84)
(mmc_add_host) from [<c0799190>] (omap_hsmmc_probe+0x5fc/0x8c0)
(omap_hsmmc_probe) from [<c0666728>] (platform_drv_probe+0x48/0x98)
(platform_drv_probe) from [<c066457c>] (really_probe+0x1dc/0x3b4)

Fixes: 04abaf07f6 ("ARM: OMAP2+: omap_device: Sync omap_device and pm_runtime after probe defer")
Fixes: 21b2cec61c ("mmc: Set PROBE_PREFER_ASYNCHRONOUS for drivers that existed in v4.4")
Acked-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Andreas Kemnade <andreas@kemnade.info>
[tony@atomide.com: left out extra parens, trimmed description stack trace]
Signed-off-by: Tony Lindgren <tony@atomide.com>
2020-12-07 15:41:27 +02:00
Tony Lindgren
b62168e516 ARM: OMAP2+: Fix am4 only build after genpd changes
With commit df6c2ec872 ("ARM: OMAP2+: Drop legacy remaining legacy
platform data for am4") we moved am4 to boot with simple-pm-bus using
genpd and devicetree based data. But I forgot to test am4 only build
that still has few references to the old platform data left, and cause
undefined reference errors with omap_hwmod_set_postsetup_state and
omap_hwmod_for_each. We can just drop the related calls for am4 now,
and also drop the references to unused struct wkup_m3_platform_data.

Reported-by: Nishanth Menon <nm@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2020-11-27 08:13:25 +02:00
Tony Lindgren
11fdf598d0 ARM: OMAP2+: Drop legacy platform data for dra7 gpmc
We can now probe devices with ti-sysc interconnect driver and dts
data. Let's drop the related platform data and custom ti,hwmods
dts property.

Cc: Roger Quadros <rogerq@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2020-11-19 15:09:01 +02:00
Tony Lindgren
fb0bf6aa8d ARM: OMAP2+: Drop legacy platform data for omap4 gpmc
We can now probe devices with ti-sysc interconnect driver and dts
data. Let's drop the related platform data and custom ti,hwmods
dts property.

Cc: Roger Quadros <rogerq@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2020-11-19 14:26:47 +02:00
Tony Lindgren
dfdaf8643e ARM: OMAP2+: Drop legacy platform data for omap4 iva
We can now probe devices with ti-sysc interconnect driver and dts
data. Let's drop the related platform data and custom ti,hwmods
dts property.

Cc: Suman Anna <s-anna@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2020-11-19 14:26:47 +02:00
Xu Wang
e106698cbb ARM: OMAP2+: Remove redundant null check before clk_prepare_enable/clk_disable_unprepare
Because clk_prepare_enable() and clk_disable_unprepare() already checked
NULL clock parameter, so the additional checks are unnecessary, just
remove them.

Signed-off-by: Xu Wang <vulab@iscas.ac.cn>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2020-11-19 11:45:42 +02:00
Jing Xiangfeng
6d9be9376b ARM: OMAP2+: Remove redundant assignment to variable ret
The variable ret has been initialized with '-ENOMEM'. The assignment
in the if branch is redundant. So remove it.

Signed-off-by: Jing Xiangfeng <jingxiangfeng@huawei.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2020-11-19 11:45:42 +02:00
Youling Tang
c3f244d577 ARM: OMAP2+: Fix kfree NULL pointer in omap2xxx_clkt_vps_init
The returns pointer is NULL when kzalloc fails to apply for space, so fix
kfree NULL pointer.

Signed-off-by: Youling Tang <tangyouling@loongson.cn>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2020-11-19 11:44:46 +02:00
Youling Tang
3c5902d270 ARM: OMAP2+: Fix memleak in omap2xxx_clkt_vps_init
If the clk_register fails, we should free hw before function returns to
prevent memleak.

Signed-off-by: Youling Tang <tangyouling@loongson.cn>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2020-11-19 11:44:46 +02:00
Tony Lindgren
df6c2ec872 ARM: OMAP2+: Drop legacy remaining legacy platform data for am4
We can now drop the remaining legacy platform data as we are
probing devices with device tree data.

Signed-off-by: Tony Lindgren <tony@atomide.com>
2020-11-16 13:11:17 +02:00
Tony Lindgren
98e6c0ae14 ARM: OMAP2+: Drop legacy platform data for am4 mpuss
We can now probe devices with ti-sysc interconnect driver and dts
data. Let's drop the related platform data and custom ti,hwmods
dts property.

Signed-off-by: Tony Lindgren <tony@atomide.com>
2020-11-16 13:11:17 +02:00
Tony Lindgren
ffbf46a362 ARM: OMAP2+: Drop legacy platform data for am4 ocmcram
We can now probe devices with ti-sysc interconnect driver and dts
data. Let's drop the related platform data and custom ti,hwmods
dts property.

Note that we need to use "ti,no-idle" here.

Cc: Dave Gerlach <d-gerlach@ti.com>
Cc: Suman Anna <s-anna@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2020-11-16 13:11:17 +02:00
Tony Lindgren
04af40fc74 ARM: OMAP2+: Drop legacy platform data for am4 emif
We can now probe devices with ti-sysc interconnect driver and dts
data. Let's drop the related platform data and custom ti,hwmods
dts property.

Cc: Dave Gerlach <d-gerlach@ti.com>
Cc: Suman Anna <s-anna@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2020-11-16 13:11:17 +02:00
Tony Lindgren
f7ddc2c974 ARM: OMAP2+: Drop legacy platform data for am4 wkup_m3
We can now probe devices with ti-sysc interconnect driver and dts
data. Let's drop the related platform data and custom ti,hwmods
dts property.

As we're just dropping data, and the early platform data init
is based on the custom ti,hwmods property, we want to drop both
the platform data and ti,hwmods property in a single patch.

Cc: Dave Gerlach <d-gerlach@ti.com>
Cc: Suman Anna <s-anna@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2020-11-16 13:11:17 +02:00
Tony Lindgren
2b999ae15b ARM: OMAP2+: Drop legacy platform data for am4 control module
We can now probe devices with ti-sysc interconnect driver and dts
data. Let's drop the related platform data and custom ti,hwmods
dts property.

To drop the legacy platform data for am3 control module, we need
to configure the missing functional clock and tag the module to
not idle as platform data also had it configured with
HWMOD_INIT_NO_IDLE.

Signed-off-by: Tony Lindgren <tony@atomide.com>
2020-11-16 13:11:17 +02:00
Tony Lindgren
133ad7ab70 ARM: OMAP2+: Build hwmod related code as needed
If we have only am3 selected, there's no need to build the
hwmod related code as we are probing devices with device tree
data.

Signed-off-by: Tony Lindgren <tony@atomide.com>
2020-11-16 12:58:21 +02:00
Tony Lindgren
68fc5990b8 ARM: OMAP2+: Drop legacy remaining legacy platform data for am3
We can now drop the remaining legacy platform data as we are
probing devices with device tree data.

Signed-off-by: Tony Lindgren <tony@atomide.com>
2020-11-16 12:58:19 +02:00
Tony Lindgren
b0625afe30 ARM: OMAP2+: Drop legacy platform data for am3 mpuss
We can now probe devices with ti-sysc interconnect driver and dts
data. Let's drop the related platform data and custom ti,hwmods
dts property.

As we're just dropping data, and the early platform data init
is based on the custom ti,hwmods property, we want to drop both
the platform data and ti,hwmods property in a single patch.

Signed-off-by: Tony Lindgren <tony@atomide.com>
2020-11-16 12:58:09 +02:00
Tony Lindgren
675755705f ARM: OMAP2+: Drop legacy platform data for am3 instr
We can now probe devices with ti-sysc interconnect driver and dts
data. Let's drop the related platform data and custom ti,hwmods
dts property.

Signed-off-by: Tony Lindgren <tony@atomide.com>
2020-11-16 12:58:07 +02:00
Tony Lindgren
2e5395684b ARM: OMAP2+: Drop legacy platform data for am3 ocmcram
We can now probe devices with ti-sysc interconnect driver and dts
data. Let's drop the related platform data and custom ti,hwmods
dts property.

Note that we need to use "ti,no-idle" here.

Cc: Dave Gerlach <d-gerlach@ti.com>
Cc: Suman Anna <s-anna@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2020-11-16 12:58:04 +02:00
Tony Lindgren
966c5e9f14 ARM: OMAP2+: Drop legacy platform data for am3 emif
We can now probe devices with ti-sysc interconnect driver and dts
data. Let's drop the related platform data and custom ti,hwmods
dts property.

Cc: Dave Gerlach <d-gerlach@ti.com>
Cc: Suman Anna <s-anna@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2020-11-16 12:58:02 +02:00
Tony Lindgren
e990ebae4c ARM: OMAP2+: Drop legacy platform data for am3 debugss
We can now probe devices with ti-sysc interconnect driver and dts
data. Let's drop the related platform data and custom ti,hwmods
dts property.

Signed-off-by: Tony Lindgren <tony@atomide.com>
2020-11-16 12:58:00 +02:00
Tony Lindgren
df7f2f9504 ARM: OMAP2+: Drop legacy platform data for am3 and am4 gpmc
We can now probe devices with ti-sysc interconnect driver and dts
data. Let's drop the related platform data and custom ti,hwmods
dts property.

As we're just dropping data, and the early platform data init
is based on the custom ti,hwmods property, we want to drop both
the platform data and ti,hwmods property in a single patch.

Cc: Roger Quadros <rogerq@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2020-11-16 12:57:58 +02:00
Tony Lindgren
3856e86f86 ARM: OMAP2+: Drop legacy platform data for am3 wkup_m3
We can now probe devices with ti-sysc interconnect driver and dts
data. Let's drop the related platform data and custom ti,hwmods
dts property.

As we're just dropping data, and the early platform data init
is based on the custom ti,hwmods property, we want to drop both
the platform data and ti,hwmods property in a single patch.

Cc: Dave Gerlach <d-gerlach@ti.com>
Cc: Suman Anna <s-anna@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2020-11-16 12:57:55 +02:00
Tony Lindgren
6bcc5f9989 ARM: OMAP2+: Drop legacy platform data for am3 control module
We can now probe devices with ti-sysc interconnect driver and dts
data. Let's drop the related platform data and custom ti,hwmods
dts property.

To drop the legacy platform data for am3 control module, we need
to configure the missing functional clock and tag the module to
not idle as platform data also had it configured with
HWMOD_INIT_NO_IDLE.

Signed-off-by: Tony Lindgren <tony@atomide.com>
2020-11-16 12:57:48 +02:00
Tony Lindgren
ae5f70f707 ARM: OMAP2+: Probe PRCM first to probe l4_wkup with simple-pm-bus
In preparation for probing the interconnects with simple-pm-bus to
make use of genpd, we need to probe the always-on PRCM first for the
clocks needed by l4_wkup instance.

Signed-off-by: Tony Lindgren <tony@atomide.com>
2020-11-16 12:57:21 +02:00
Tony Lindgren
9261c5b2f5 ARM: OMAP2+: Check for inited flag
If we have no hwmods configured and omap_hwmod_init() is not called,
we don't want to call omap_hwmod_setup_all() as it will fail with
checks for configured MPU at least.

Signed-off-by: Tony Lindgren <tony@atomide.com>
2020-11-16 12:57:18 +02:00
Tony Lindgren
df85429959 Merge tag 'ti-sysc-fixes' into fixes 2020-11-16 11:18:56 +02:00
Tony Lindgren
294a3317be ARM: OMAP2+: Manage MPU state properly for omap_enter_idle_coupled()
Based on more testing, commit 8ca5ee624b4c ("ARM: OMAP2+: Restore MPU
power domain if cpu_cluster_pm_enter() fails") is a poor fix for handling
cpu_cluster_pm_enter() returned errors.

We should not override the cpuidle states with a hardcoded PWRDM_POWER_ON
value. Instead, we should use a configured idle state that does not cause
the context to be lost. Otherwise we end up configuring a potentially
improper state for the MPUSS. We also want to update the returned state
index for the selected state.

Let's just select the highest power idle state C1 to ensure no context
loss is allowed on cpu_cluster_pm_enter() errors. With these changes we
can now unconditionally call omap4_enter_lowpower() for WFI like we did
earlier before commit 55be2f5033 ("ARM: OMAP2+: Handle errors for
cpu_pm"). And we can return the selected state index.

Fixes: 8f04aea048 ("ARM: OMAP2+: Restore MPU power domain if cpu_cluster_pm_enter() fails")
Fixes: 55be2f5033 ("ARM: OMAP2+: Handle errors for cpu_pm")
Signed-off-by: Tony Lindgren <tony@atomide.com>
2020-10-27 09:32:56 +02:00
Tony Lindgren
b69fd00120 ARM: OMAP2+: Fix missing select PM_GENERIC_DOMAINS_OF
We should select also PM_GENERIC_DOMAINS_OF in addition to
PM_GENERIC_DOMAINS to have device tree based PM domain providers
enabled.

Fixes: 58cbff023b ("soc: ti: omap-prm: Add basic power domain support")
Signed-off-by: Tony Lindgren <tony@atomide.com>
2020-10-26 10:08:48 +02:00
Tony Lindgren
c20782ad4e ARM: OMAP2+: Fix location for select PM_GENERIC_DOMAINS
I accidentally misplaced select PM_GENERIC_DOMAINS, it should be
selected for all the SoCs instead.

Fixes: 58cbff023b ("soc: ti: omap-prm: Add basic power domain support")
Signed-off-by: Tony Lindgren <tony@atomide.com>
2020-10-26 09:19:15 +02:00
Linus Torvalds
e731f3146f Merge tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc
Pull ARM SoC platform updates from Olof Johansson:
 "SoC changes, a substantial part of this is cleanup of some of the
  older platforms that used to have a bunch of board files.

  In particular:

   - Remove non-DT i.MX platforms that haven't seen activity in years,
     it's time to remove them.

   - A bunch of cleanup and removal of platform data for TI/OMAP
     platforms, moving over to genpd for power/reset control (yay!)

   - Major cleanup of Samsung S3C24xx and S3C64xx platforms, moving them
     closer to multiplatform support (not quite there yet, but getting
     close).

  There are a few other changes too, smaller fixlets, etc. For new
  platform support, the primary ones are:

   - New SoC: Hisilicon SD5203, ARM926EJ-S platform.

   - Cpufreq support for i.MX7ULP"

* tag 'armsoc-soc' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (121 commits)
  ARM: mstar: Select MStar intc
  ARM: stm32: Replace HTTP links with HTTPS ones
  ARM: debug: add UART early console support for SD5203
  ARM: hisi: add support for SD5203 SoC
  ARM: omap3: enable off mode automatically
  clk: imx: imx35: Remove mx35_clocks_init()
  clk: imx: imx31: Remove mx31_clocks_init()
  clk: imx: imx27: Remove mx27_clocks_init()
  ARM: imx: Remove unused definitions
  ARM: imx35: Retrieve the IIM base address from devicetree
  ARM: imx3: Retrieve the AVIC base address from devicetree
  ARM: imx3: Retrieve the CCM base address from devicetree
  ARM: imx31: Retrieve the IIM base address from devicetree
  ARM: imx27: Retrieve the CCM base address from devicetree
  ARM: imx27: Retrieve the SYSCTRL base address from devicetree
  ARM: s3c64xx: bring back notes from removed debug-macro.S
  ARM: s3c24xx: fix Wunused-variable warning on !MMU
  ARM: samsung: fix PM debug build with DEBUG_LL but !MMU
  MAINTAINERS: mark linux-samsung-soc list non-moderated
  ARM: imx: Remove remnant board file support pieces
  ...
2020-10-24 10:33:08 -07:00
Olof Johansson
025565212d Merge tag 'omap-for-v5.10/soc-part2-v2-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into arm/soc
One more SoC change for omaps for v5.10 merge window

Remove debugfs dependency for enabling off mode during idle
for omap3 by enabling it automatically based on the PMIC
configuration.

* tag 'omap-for-v5.10/soc-part2-v2-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  ARM: omap3: enable off mode automatically

Link: https://lore.kernel.org/r/pull-1601445968-476435@atomide.com
Signed-off-by: Olof Johansson <olof@lixom.net>
2020-10-03 13:15:05 -07:00
Olof Johansson
6869f774b1 Merge tag 'omap-for-v5.9/fixes-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into arm/fixes
Two regression fixes for omaps

Fix AM33XX_IOPAD macro that broke after recent pinctrl changes
to use #pinctrl-cells = 2. And fix omap_enter_idle_coupled()
for cases where cpu_cluster_pm_enter() returns an error as
otherwise we may end up wrongly idling the MPU domain on the
next WFI.

* tag 'omap-for-v5.9/fixes-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  ARM: OMAP2+: Restore MPU power domain if cpu_cluster_pm_enter() fails
  ARM: dts: am33xx: modify AM33XX_IOPAD for #pinctrl-cells = 2

Link: https://lore.kernel.org/r/pull-1601544624-617679@atomide.com
Signed-off-by: Olof Johansson <olof@lixom.net>
2020-10-03 12:45:12 -07:00
Olof Johansson
abc7220b22 Merge tag 'ti-k3-dt-fixes-for-v5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/nmenon/linux into arm/fixes
Tag fix up for TI serdes mux definition introduced in 5.9

* tag 'ti-k3-dt-fixes-for-v5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/nmenon/linux: (637 commits)
  arm64: dts: ti: k3-j721e: Rename mux header and update macro names
  Linux 5.9-rc3
  genirq/matrix: Deal with the sillyness of for_each_cpu() on UP
  fsldma: fix very broken 32-bit ppc ioread64 functionality
  kernel.h: Silence sparse warning in lower_32_bits
  cifs: fix check of tcon dfs in smb1
  KVM: arm64: Set HCR_EL2.PTW to prevent AT taking synchronous exception
  KVM: arm64: Survive synchronous exceptions caused by AT instructions
  KVM: arm64: Add kvm_extable for vaxorcism code
  arm64: vdso32: make vdso32 install conditional
  arm64: use a common .arch preamble for inline assembly
  mfd: mfd-core: Ensure disabled devices are ignored without error
  usb: storage: Add unusual_uas entry for Sony PSZ drives
  md/raid5: make sure stripe_size as power of two
  powerpc/32s: Disable VMAP stack which CONFIG_ADB_PMU
  io_uring: don't bounce block based -EAGAIN retry off task_work
  io_uring: fix IOPOLL -EAGAIN retries
  arm64/cpuinfo: Remove unnecessary fallthrough annotation
  media: dib0700: Fix identation issue in dib8096_set_param_override()
  hwmon: (gsc-hwmon) Scale temperature to millidegrees
  ...

Link: https://lore.kernel.org/r/20200921125402.mtwypblhb45a6ssh@akan
Signed-off-by: Olof Johansson <olof@lixom.net>
2020-09-26 10:08:48 -07:00
Andreas Kemnade
fb2c599f05 ARM: omap3: enable off mode automatically
Enabling off mode was only reachable deeply hidden
in the debugfs. As powersaving is an important feature,
move the option out of its shady place.
The debugfs file can still be used to override the default.

Use the presence of a device compatible to ti,twl4030-idle or
ti,twl4030-idle-osc-off as an indicator that the board is wired correctly
for off mode.

Signed-off-by: Andreas Kemnade <andreas@kemnade.info>
[tony@atomide.com: updated to fix a checkpatch warning]
Signed-off-by: Tony Lindgren <tony@atomide.com>
2020-09-24 14:26:20 +03:00
Tony Lindgren
8f04aea048 ARM: OMAP2+: Restore MPU power domain if cpu_cluster_pm_enter() fails
If cpu_cluster_pm_enter() fails, we need to set MPU power domain back
to enabled to prevent the next WFI from potentially triggering an
undesired MPU power domain state change.

We already do this for omap_enter_idle_smp() but are missing it for
omap_enter_idle_coupled().

Fixes: 55be2f5033 ("ARM: OMAP2+: Handle errors for cpu_pm")
Signed-off-by: Tony Lindgren <tony@atomide.com>
2020-09-23 10:39:33 +03:00
Olof Johansson
989286ffe8 Merge tag 'omap-for-v5.10/ti-sysc-drop-pdata-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into arm/soc
Add initial genpd support for omaps to drop more platform data

We now drop legacy platform data for RTC on am3, am4 and dra7.
And we add initial genpd support for PRM (Power and Reset Manager)
and use it to drop legacy platform data for am3 sgx and omap4/5
l4_abe interconnect instance.

* tag 'omap-for-v5.10/ti-sysc-drop-pdata-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  ARM: OMAP2+: Drop legacy platform data for dra7 rtcss
  ARM: OMAP2+: Drop legacy platform data for am3 and am4 rtc
  soc: ti: pm33xx: Simplify RTC usage to prepare to drop platform data
  ARM: dts: Configure omap4 and 5 l4_abe for genpd and drop platform data
  ARM: dts: Configure am3 and am4 sgx for genpd and drop platform data
  soc: ti: omap-prm: Configure omap4 and 5 l4_abe power domain
  soc: ti: omap-prm: Configure sgx power domain for am3 and am4
  soc: ti: omap-prm: Add basic power domain support
  dt-bindings: omap: Update PRM binding for genpd

Link: https://lore.kernel.org/r/pull-1599132307-761202@atomide.com-2
Signed-off-by: Olof Johansson <olof@lixom.net>
2020-09-13 11:17:42 -07:00
Olof Johansson
63e850f1cd Merge tag 'omap-for-v5.10/soc-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into arm/soc
SoC changes for omaps for v5.10

Few changes to replace HTTP links with HTTPS, and a change to
delete a duplicate word for omap1 mux.h comments.

* tag 'omap-for-v5.10/soc-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  arm: mach-omap1: mux.h: delete duplicate word
  ARM: OMAP2+: Replace HTTP links with HTTPS ones
  ARM: OMAP2+: pm33xx-core: Replace HTTP links with HTTPS ones
  ARM: OMAP2+: hwmod: Replace HTTP links with HTTPS ones
  ARM: OMAP2+: Replace HTTP links with HTTPS ones
  ARM: OMAP2+: PRM: Replace HTTP links with HTTPS ones

Link: https://lore.kernel.org/r/pull-1599132307-761202@atomide.com
Signed-off-by: Olof Johansson <olof@lixom.net>
2020-09-13 11:17:01 -07:00
Tony Lindgren
0d7ce5c5c4 Merge branch 'omap-for-v5.10/prm-genpd' into omap-for-v5.10/ti-sysc-drop-pdata 2020-09-03 12:06:18 +03:00
Linus Torvalds
b69bea8a65 Merge tag 'locking-urgent-2020-08-30' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking fixes from Thomas Gleixner:
 "A set of fixes for lockdep, tracing and RCU:

   - Prevent recursion by using raw_cpu_* operations

   - Fixup the interrupt state in the cpu idle code to be consistent

   - Push rcu_idle_enter/exit() invocations deeper into the idle path so
     that the lock operations are inside the RCU watching sections

   - Move trace_cpu_idle() into generic code so it's called before RCU
     goes idle.

   - Handle raw_local_irq* vs. local_irq* operations correctly

   - Move the tracepoints out from under the lockdep recursion handling
     which turned out to be fragile and inconsistent"

* tag 'locking-urgent-2020-08-30' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  lockdep,trace: Expose tracepoints
  lockdep: Only trace IRQ edges
  mips: Implement arch_irqs_disabled()
  arm64: Implement arch_irqs_disabled()
  nds32: Implement arch_irqs_disabled()
  locking/lockdep: Cleanup
  x86/entry: Remove unused THUNKs
  cpuidle: Move trace_cpu_idle() into generic code
  cpuidle: Make CPUIDLE_FLAG_TLB_FLUSHED generic
  sched,idle,rcu: Push rcu_idle deeper into the idle path
  cpuidle: Fixup IRQ state
  lockdep: Use raw_cpu_*() for per-cpu variables
2020-08-30 11:43:50 -07:00
Peter Zijlstra
9864f5b594 cpuidle: Move trace_cpu_idle() into generic code
Remove trace_cpu_idle() from the arch_cpu_idle() implementations and
put it in the generic code, right before disabling RCU. Gets rid of
more trace_*_rcuidle() users.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Tested-by: Marco Elver <elver@google.com>
Link: https://lkml.kernel.org/r/20200821085348.428433395@infradead.org
2020-08-26 12:41:54 +02:00
Tony Lindgren
90aa4ed5a4 ARM: OMAP2+: Drop legacy platform data for dra7 rtcss
We can now probe devices with ti-sysc interconnect driver and dts
data. Let's drop the related platform data and custom ti,hwmods
dts property.

As we're just dropping data, and the early platform data init
is based on the custom ti,hwmods property, we want to drop both
the platform data and ti,hwmods property in a single patch.

Cc: Keerthy <j-keerthy@ti.com>
Acked-by: Santosh Shilimkar <ssantosh@kernel.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2020-08-24 08:40:03 +03:00
Tony Lindgren
6b8a3deedc ARM: OMAP2+: Drop legacy platform data for am3 and am4 rtc
We can now probe devices with ti-sysc interconnect driver and dts
data. Let's drop the related platform data and custom ti,hwmods
dts property.

As we're just dropping data, and the early platform data init
is based on the custom ti,hwmods property, we want to drop both
the platform data and ti,hwmods property in a single patch.

Note that we also must tag rtc as disabled on am43x-epos-evm as
it's not accessible according to commit 4321dc8dff ("ARM: AM43XX:
hwmod: Add rtc hwmod"). And we must keep RTC enabled for rtcwake
to work now that we've removed the custom platfor code for
re-enabling the RTC on suspend.

Acked-by: Santosh Shilimkar <ssantosh@kernel.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2020-08-24 08:39:47 +03:00
Tony Lindgren
2152fbbd47 soc: ti: pm33xx: Simplify RTC usage to prepare to drop platform data
We must re-enable the RTC module clock enabled in RTC+DDR suspend, and
pm33xx has been using platform data callbacks for that. Looks like for
retention suspend the RTC module clock must not be re-enabled.

To remove the legacy platform data callbacks, and eventually be able to
drop the RTC legacy platform data, let's manage the RTC module clock
and register range directly in pm33xx.

Acked-by: Santosh Shilimkar <ssantosh@kernel.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2020-08-24 08:38:32 +03:00
Gustavo A. R. Silva
df561f6688 treewide: Use fallthrough pseudo-keyword
Replace the existing /* fall through */ comments and its variants with
the new pseudo-keyword macro fallthrough[1]. Also, remove unnecessary
fall-through markings when it is the case.

[1] https://www.kernel.org/doc/html/v5.7/process/deprecated.html?highlight=fallthrough#implicit-switch-case-fall-through

Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
2020-08-23 17:36:59 -05:00
Alexander A. Klimov
83bf6db020 ARM: OMAP2+: Replace HTTP links with HTTPS ones
Rationale:
Reduces attack surface on kernel devs opening the links for MITM
as HTTPS traffic is much harder to manipulate.

Deterministic algorithm:
For each file:
  If not .svg:
    For each line:
      If doesn't contain `\bxmlns\b`:
        For each link, `\bhttp://[^# \t\r\n]*(?:\w|/)`:
	  If neither `\bgnu\.org/license`, nor `\bmozilla\.org/MPL\b`:
            If both the HTTP and HTTPS versions
            return 200 OK and serve the same content:
              Replace HTTP with HTTPS.

Signed-off-by: Alexander A. Klimov <grandmaster@al2klimov.de>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2020-08-19 10:19:13 +03:00
Alexander A. Klimov
f8fbd8c341 ARM: OMAP2+: pm33xx-core: Replace HTTP links with HTTPS ones
Rationale:
Reduces attack surface on kernel devs opening the links for MITM
as HTTPS traffic is much harder to manipulate.

Deterministic algorithm:
For each file:
  If not .svg:
    For each line:
      If doesn't contain `\bxmlns\b`:
        For each link, `\bhttp://[^# \t\r\n]*(?:\w|/)`:
	  If neither `\bgnu\.org/license`, nor `\bmozilla\.org/MPL\b`:
            If both the HTTP and HTTPS versions
            return 200 OK and serve the same content:
              Replace HTTP with HTTPS.

Signed-off-by: Alexander A. Klimov <grandmaster@al2klimov.de>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2020-08-19 10:05:48 +03:00