dt-bindings: input: Add DT bindings for max77650

Add the DT binding document for the onkey module of max77650.

Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

diff --git a/Documentation/devicetree/bindings/input/max77650-onkey.txt b/Documentation/devicetree/bindings/input/max77650-onkey.txt
new file mode 100644 (file)
index 0000000..477dc74
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+++ b/Documentation/devicetree/bindings/input/max77650-onkey.txt
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+Onkey driver for MAX77650 PMIC from Maxim Integrated.
+
+This module is part of the MAX77650 MFD device. For more details
+see Documentation/devicetree/bindings/mfd/max77650.txt.
+
+The onkey controller is represented as a sub-node of the PMIC node on
+the device tree.
+
+Required properties:
+--------------------
+- compatible:          Must be "maxim,max77650-onkey".
+
+Optional properties:
+- linux,code:          The key-code to be reported when the key is pressed.
+                       Defaults to KEY_POWER.
+- maxim,onkey-slide:   The system's button is a slide switch, not the default
+                       push button.
+
+Example:
+--------
+
+       onkey {
+               compatible = "maxim,max77650-onkey";
+               linux,code = <KEY_END>;
+               maxim,onkey-slide;
+       };