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ARM: Orion: DT support for IRQ and GPIO Controllers

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Both IRQ and GPIO controllers can now be represented in DT.  The IRQ
controllers are setup first, and then the GPIO controllers. Interrupts
for GPIO lines are placed directly after the main interrupts in the
interrupt space.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Acked-by: Sebastian Hesselbarth <sebastian.hesselbarth@googlemail.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Tested-by: Josh Coombs <josh.coombs@gmail.com>
Tested-by: Simon Baatz <gmbnomis@gmail.com>
This commit is contained in:
Andrew Lunn
2012-06-27 13:40:04 +02:00
parent 89fb2d77d5
commit 278b45b06b
13 changed files with 341 additions and 166 deletions
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20
Documentation/devicetree/bindings/arm/mrvl/intc.txt
View File

@@ -38,3 +38,23 @@ Example:
reg-names = "mux status", "mux mask";
mrvl,intc-nr-irqs = <2>;
};
* Marvell Orion Interrupt controller
Required properties
- compatible : Should be "marvell,orion-intc".
- #interrupt-cells: Specifies the number of cells needed to encode an
interrupt source. Supported value is <1>.
- interrupt-controller : Declare this node to be an interrupt controller.
- reg : Interrupt mask address. A list of 4 byte ranges, one per controller.
One entry in the list represents 32 interrupts.
Example:
intc: interrupt-controller {
compatible = "marvell,orion-intc", "marvell,intc";
interrupt-controller;
#interrupt-cells = <1>;
reg = <0xfed20204 0x04>,
<0xfed20214 0x04>;
};

23
Documentation/devicetree/bindings/gpio/mrvl-gpio.txt
View File

@@ -27,3 +27,26 @@ Example:
interrupt-controller;
#interrupt-cells = <1>;
};
* Marvell Orion GPIO Controller
Required properties:
- compatible : Should be "marvell,orion-gpio"
- reg : Address and length of the register set for controller.
- gpio-controller : So we know this is a gpio controller.
- ngpio : How many gpios this controller has.
- interrupts : Up to 4 Interrupts for the controller.
Optional properties:
- mask-offset : For SMP Orions, offset for Nth CPU
Example:
gpio0: gpio@10100 {
compatible = "marvell,orion-gpio";
#gpio-cells = <2>;
gpio-controller;
reg = <0x10100 0x40>;
ngpio = <32>;
interrupts = <35>, <36>, <37>, <38>;
};