1 Binding for Qualcomm Atheros AR7xxx/AR9xxx GPIO controller
2
3 Required 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
14 Optional properties:
15 - interrupts: Interrupt specifier for the controllers interrupt.
16 - interrupt-controller : Identifies the node as an interrupt controller
17 - #interrupt-cells : Specifies the number of cells needed to encode interrupt
18 source, should be 2
19
20 Please refer to interrupts.txt in this directory for details of the common
21 Interrupt Controllers bindings used by client devices.
22
23 Example:
24
25 gpio@18040000 {
26 compatible = "qca,ar9132-gpio", "qca,ar7100-gpio";
27 reg = <0x18040000 0x30>;
28 interrupts = <2>;
29
30 ngpios = <22>;
31
32 gpio-controller;
33 #gpio-cells = <2>;
34
35 interrupt-controller;
36 #interrupt-cells = <2>;
37 };
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