1Binding for Qualcomm Atheros AR7xxx/AR9xxx GPIO controller
2
3Required properties:
4- compatible: has to be "qca,<soctype>-gpio" and one of the following
5  fallbacks:
6  - "qca,ar7100-gpio"
7  - "qca,ar9340-gpio"
8- reg: Base address and size of the controllers memory area
9- gpio-controller : Marks the device node as a GPIO controller.
10- #gpio-cells : Should be two. The first cell is the pin number and the
11  second cell is used to specify optional parameters.
12- ngpios: Should be set to the number of GPIOs available on the SoC.
13
14Optional properties:
15- interrupt-parent: phandle of the parent interrupt controller.
16- interrupts: Interrupt specifier for the controllers interrupt.
17- interrupt-controller : Identifies the node as an interrupt controller
18- #interrupt-cells : Specifies the number of cells needed to encode interrupt
19		     source, should be 2
20
21Please refer to interrupts.txt in this directory for details of the common
22Interrupt Controllers bindings used by client devices.
23
24Example:
25
26	gpio@18040000 {
27		compatible = "qca,ar9132-gpio", "qca,ar7100-gpio";
28		reg = <0x18040000 0x30>;
29		interrupts = <2>;
30
31		ngpios = <22>;
32
33		gpio-controller;
34		#gpio-cells = <2>;
35
36		interrupt-controller;
37		#interrupt-cells = <2>;
38	};
39