linux-arkmicro/linux/Documentation/devicetree/bindings/iio/potentiometer/ad5272.txt

* Analog Devices AD5272 digital potentiometer

The node for this device must be a child node of a I2C controller, hence
all mandatory properties for your controller must be specified. See directory:

        Documentation/devicetree/bindings/i2c

for more details.

Required properties:
	- compatible:  	Must be one of the following, depending on the model:
			adi,ad5272-020
			adi,ad5272-050
			adi,ad5272-100
			adi,ad5274-020
			adi,ad5274-100

Optional properties:
 - reset-gpios: GPIO specification for the RESET input. This is an
		active low signal to the AD5272.

Example:
ad5272: potentiometer@2f {
	reg = <0x2F>;
	compatible = "adi,ad5272-020";
	reset-gpios = <&gpio3 6 GPIO_ACTIVE_HIGH>;
};