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authorAlexander Stein <alexander.stein@systec-electronic.com>2014-11-25 11:53:45 -0800
committerDmitry Torokhov <dmitry.torokhov@gmail.com>2014-12-03 15:28:39 -0800
commitf2d347ff70be453e861304448cb2f32ff94d40e9 (patch)
tree206349299d3784d12d9c6eae11f299bb94a9a2ae /Documentation/devicetree
parente147af492e6c80855550908c86d6d11a501cbfaf (diff)
Input: gpio_keys - add device tree support for interrupt only keys
This features already exists for board config setups. Add support for device tree based systems. Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'Documentation/devicetree')
-rw-r--r--Documentation/devicetree/bindings/input/gpio-keys.txt10
1 files changed, 9 insertions, 1 deletions
diff --git a/Documentation/devicetree/bindings/input/gpio-keys.txt b/Documentation/devicetree/bindings/input/gpio-keys.txt
index 5c2c02140a62..a4a38fcf2ed6 100644
--- a/Documentation/devicetree/bindings/input/gpio-keys.txt
+++ b/Documentation/devicetree/bindings/input/gpio-keys.txt
@@ -10,10 +10,13 @@ Optional properties:
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.
+Required mutual exclusive subnode-properties:
+ - gpios: OF device-tree gpio specification.
+ - interrupts: the interrupt line for that input
+
Optional subnode-properties:
- linux,input-type: Specify event type this button/key generates.
If not specified defaults to <1> == EV_KEY.
@@ -33,4 +36,9 @@ Example nodes:
linux,code = <103>;
gpios = <&gpio1 0 1>;
};
+ button@22 {
+ label = "GPIO Key DOWN";
+ linux,code = <108>;
+ interrupts = <1 IRQ_TYPE_LEVEL_HIGH 7>;
+ };
...

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