Commit 4760b6fa authored by Jonathan Neuschäfer's avatar Jonathan Neuschäfer Committed by Linus Walleij

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
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>;
}
......@@ -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
......
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