linux/linux-5.4.31/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;
};