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