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-* Analog Devices AD7170/AD7171/AD7780/AD7781
-
-Data sheets:
-
-- AD7170:
- * https://www.analog.com/media/en/technical-documentation/data-sheets/AD7170.pdf
-- AD7171:
- * https://www.analog.com/media/en/technical-documentation/data-sheets/AD7171.pdf
-- AD7780:
- * https://www.analog.com/media/en/technical-documentation/data-sheets/ad7780.pdf
-- AD7781:
- * https://www.analog.com/media/en/technical-documentation/data-sheets/AD7781.pdf
-
-Required properties:
-
-- compatible: should be one of
- * "adi,ad7170"
- * "adi,ad7171"
- * "adi,ad7780"
- * "adi,ad7781"
-- reg: spi chip select number for the device
-- vref-supply: the regulator supply for the ADC reference voltage
-
-Optional properties:
-
-- powerdown-gpios: must be the device tree identifier of the PDRST pin. If
- specified, it will be asserted during driver probe. As the
- line is active high, it should be marked GPIO_ACTIVE_HIGH.
-- adi,gain-gpios: must be the device tree identifier of the GAIN pin. Only for
- the ad778x chips. If specified, it will be asserted during
- driver probe. As the line is active low, it should be marked
- GPIO_ACTIVE_LOW.
-- adi,filter-gpios: must be the device tree identifier of the FILTER pin. Only
- for the ad778x chips. If specified, it will be asserted
- during driver probe. As the line is active low, it should be
- marked GPIO_ACTIVE_LOW.
-
-Example:
-
-adc@0 {
- compatible = "adi,ad7780";
- reg = <0>;
- vref-supply = <&vdd_supply>
-
- powerdown-gpios = <&gpio 12 GPIO_ACTIVE_HIGH>;
- adi,gain-gpios = <&gpio 5 GPIO_ACTIVE_LOW>;
- adi,filter-gpios = <&gpio 15 GPIO_ACTIVE_LOW>;
-};