1Device-Tree bindings for input/gpio_keys.c keyboard driver
2
3Required properties:
4	- compatible = "gpio-keys";
5
6Optional properties:
7	- autorepeat: Boolean, Enable auto repeat feature of Linux input
8	  subsystem.
9
10Each button (key) is represented as a sub-node of "gpio-keys":
11Subnode properties:
12
13	- gpios: OF device-tree gpio specification.
14	- label: Descriptive name of the key.
15	- linux,code: Keycode to emit.
16
17Optional subnode-properties:
18	- linux,input-type: Specify event type this button/key generates.
19	  If not specified defaults to <1> == EV_KEY.
20	- debounce-interval: Debouncing interval time in milliseconds.
21	  If not specified defaults to 5.
22	- gpio-key,wakeup: Boolean, button can wake-up the system.
23
24Example nodes:
25
26	gpio_keys {
27			compatible = "gpio-keys";
28			#address-cells = <1>;
29			#size-cells = <0>;
30			autorepeat;
31			button@21 {
32				label = "GPIO Key UP";
33				linux,code = <103>;
34				gpios = <&gpio1 0 1>;
35			};
36			...
37