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dt-bindings: ad5272: Add bindings for Analog Devices digital potentiometers 

Add binding documentation for Analog Devices AD5272 and AD5274 digital
potentiometer devices.

Signed-off-by: Phil Reid <preid@electromag.com.au>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
hifive-unleashed-5.1
Phil Reid 2018-02-09 08:57:26 +08:00 committed by Jonathan Cameron
parent 0bd39455b1
commit 8730e267a1
1 changed files with 27 additions and 0 deletions
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Documentation/devicetree/bindings/iio/potentiometer/ad5272.txt 100644
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* 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>;
};