xref: /freebsd/sys/contrib/device-tree/Bindings/gpio/nintendo,hollywood-gpio.txt (revision 02e9120893770924227138ba49df1edb3896112a) 
1Nintendo Wii (Hollywood) GPIO controller
2
3Required properties:
4- compatible: "nintendo,hollywood-gpio"
5- reg: Physical base address and length of the controller's registers.
6- gpio-controller: Marks the device node as a GPIO controller.
7- #gpio-cells: Should be <2>. The first cell is the pin number and the
8  second cell is used to specify optional parameters:
9   - bit 0 specifies polarity (0 for normal, 1 for inverted).
10
11Optional properties:
12- ngpios: see Documentation/devicetree/bindings/gpio/gpio.txt
13- interrupt-controller: Marks the device node as an interrupt controller.
14- #interrupt-cells: Should be two.
15- interrupts: Interrupt specifier for the controller's Broadway (PowerPC)
16  interrupt.
17
18Example:
19
20	GPIO: gpio@d8000c0 {
21		#gpio-cells = <2>;
22		compatible = "nintendo,hollywood-gpio";
23		reg = <0x0d8000c0 0x40>;
24		gpio-controller;
25		ngpios = <24>;
26	}
27