diff options
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/devicetree/bindings/input/gpio-keys-polled.txt | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/Documentation/devicetree/bindings/input/gpio-keys-polled.txt b/Documentation/devicetree/bindings/input/gpio-keys-polled.txt index 5b91f5a3bd5c..97e2467181e9 100644 --- a/Documentation/devicetree/bindings/input/gpio-keys-polled.txt +++ b/Documentation/devicetree/bindings/input/gpio-keys-polled.txt @@ -13,11 +13,18 @@ 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. |