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Commit 4760b6fa authored by Jonathan Neuschäfer's avatar Jonathan Neuschäfer Committed by Linus Walleij
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dt-bindings: gpio: Add binding for Wii GPIO controller 



The Nintendo Wii game console has a GPIO controller, which is used for
the optical disk slot LED, buttons, poweroff, etc. This patch adds a
binding for this GPIO controller.

Signed-off-by: default avatarJonathan Neuschäfer <j.neuschaefer@gmx.net>
Reviewed-by: default avatarRob Herring <robh@kernel.org>
Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
parent b5cd7802

Documentation/devicetree/bindings/gpio/nintendo,hollywood-gpio.txt

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Nintendo Wii (Hollywood) GPIO controller



Required properties:

- compatible: "nintendo,hollywood-gpio

- reg: Physical base address and length of the controller's registers.

- gpio-controller: Marks the device node as a GPIO controller.

- #gpio-cells: Should be <2>. The first cell is the pin number and the

  second cell is used to specify optional parameters:

   - bit 0 specifies polarity (0 for normal, 1 for inverted).



Optional properties:

- ngpios: see Documentation/devicetree/bindings/gpio/gpio.txt

- interrupt-controller: Marks the device node as an interrupt controller.

- #interrupt-cells: Should be two.

- interrupts: Interrupt specifier for the controller's Broadway (PowerPC)

  interrupt.

- interrupt-parent: phandle of the parent interrupt controller.



Example:



	GPIO: gpio@d8000c0 {

		#gpio-cells = <2>;

		compatible = "nintendo,hollywood-gpio";

		reg = <0x0d8000c0 0x40>;

		gpio-controller;

		ngpios = <24>;

	}

Documentation/devicetree/bindings/powerpc/nintendo/wii.txt

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@@ -152,14 +152,7 @@ Nintendo Wii device tree 


1.l) The General Purpose I/O (GPIO) controller node



  Represents the dual access 32 GPIO controller interface.



  Required properties:



  - #gpio-cells : <2>

  - compatible : should be "nintendo,hollywood-gpio"

  - reg : should contain the IPC registers location and length

  - gpio-controller

  see Documentation/devicetree/bindings/gpio/nintendo,hollywood-gpio.txt



1.m) The control node