linux/Documentation/devicetree/bindings/input/gpio-keys.txt
Ezequiel Garcia 90550e6fb1 Input: gpio-keys - move the gpio-keys bindings documentation
This is an input driver and belongs to input not gpio.

Signed-off-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-05-18 13:43:18 -07:00

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Device-Tree bindings for input/gpio_keys.c keyboard driver
Required properties:
- compatible = "gpio-keys";
Optional properties:
- autorepeat: Boolean, Enable auto repeat feature of Linux input
subsystem.
Each button (key) is represented as a sub-node of "gpio-keys":
Subnode properties:
- gpios: OF device-tree gpio specification.
- label: Descriptive name of the key.
- linux,code: Keycode to emit.
Optional subnode-properties:
- linux,input-type: Specify event type this button/key generates.
If not specified defaults to <1> == EV_KEY.
- debounce-interval: Debouncing interval time in milliseconds.
If not specified defaults to 5.
- gpio-key,wakeup: Boolean, button can wake-up the system.
Example nodes:
gpio_keys {
compatible = "gpio-keys";
#address-cells = <1>;
#size-cells = <0>;
autorepeat;
button@21 {
label = "GPIO Key UP";
linux,code = <103>;
gpios = <&gpio1 0 1>;
};
...