Merge remote-tracking branch 'xen-tip/linux-next'

[karo-tx-linux.git] / Documentation / devicetree / bindings / input / gpio-keys-polled.txt

diff --git a/Documentation/devicetree/bindings/input/gpio-keys-polled.txt b/Documentation/devicetree/bindings/input/gpio-keys-polled.txt
index 5b91f5a3bd5c6aee02353423c3cdb8f56bd7bd22..95d0fb11a78753cdd272015e876bff704db1d726 100644 (file)
--- a/Documentation/devicetree/bindings/input/gpio-keys-polled.txt
+++ b/Documentation/devicetree/bindings/input/gpio-keys-polled.txt
@@ -13,14 +13,22 @@ Subnode properties:
 
        - gpios: OF device-tree gpio specification.
        - label: Descriptive name of the key.
-       - linux,code: Keycode to emit.
+       - linux,code: Key / Axis code to emit.
 
 Optional subnode-properties:
        - linux,input-type: Specify event type this button/key generates.
          If not specified defaults to <1> == EV_KEY.
+       - linux,input-value: If linux,input-type is EV_ABS or EV_REL then this
+         value is sent for events this button generates when pressed.
+         EV_ABS/EV_REL axis will generate an event with a value of 0 when
+         all buttons with linux,input-type == type and linux,code == axis
+         are released. This value is interpreted as a signed 32 bit value,
+         e.g. to make a button generate a value of -1 use:
+         linux,input-value = <0xffffffff>; /* -1 */
        - debounce-interval: Debouncing interval time in milliseconds.
          If not specified defaults to 5.
        - wakeup-source: Boolean, button can wake-up the system.
+                        (Legacy property supported: "gpio-key,wakeup")
 
 Example nodes: