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authorEzequiel Garcia <ezequiel.garcia@free-electrons.com>2014-05-18 13:41:57 -0700
committerDmitry Torokhov <dmitry.torokhov@gmail.com>2014-05-18 13:43:18 -0700
commit90550e6fb19f42cd6184e56006206ca8296d596b (patch)
treeb5adbd39771617c901af6b7d5d1ef5777cbe23fd /Documentation/devicetree/bindings/input
parentd51ddb2bf64433195cd0fc21d894d703c5d5ecf9 (diff)
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>
Diffstat (limited to 'Documentation/devicetree/bindings/input')
-rw-r--r--Documentation/devicetree/bindings/input/gpio-keys.txt36
1 files changed, 36 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/input/gpio-keys.txt b/Documentation/devicetree/bindings/input/gpio-keys.txt
new file mode 100644
index 000000000000..5c2c02140a62
--- /dev/null
+++ b/Documentation/devicetree/bindings/input/gpio-keys.txt
@@ -0,0 +1,36 @@
+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>;
+ };
+ ...

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