5c2c02140a62dac132566aaeb4f6156b46233f41
[sfrench/cifs-2.6.git] / Documentation / devicetree / bindings / input / gpio-keys.txt
1 Device-Tree bindings for input/gpio_keys.c keyboard driver
2
3 Required properties:
4         - compatible = "gpio-keys";
5
6 Optional properties:
7         - autorepeat: Boolean, Enable auto repeat feature of Linux input
8           subsystem.
9
10 Each button (key) is represented as a sub-node of "gpio-keys":
11 Subnode properties:
12
13         - gpios: OF device-tree gpio specification.
14         - label: Descriptive name of the key.
15         - linux,code: Keycode to emit.
16
17 Optional 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
24 Example 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                         ...