adi,ad7780.yaml (2552B)
1# SPDX-License-Identifier: GPL-2.0 2%YAML 1.2 3--- 4$id: http://devicetree.org/schemas/iio/adc/adi,ad7780.yaml# 5$schema: http://devicetree.org/meta-schemas/core.yaml# 6 7title: Analog Devices AD7170/AD7171/AD7780/AD7781 analog to digital converters 8 9maintainers: 10 - Michael Hennerich <michael.hennerich@analog.com> 11 12description: | 13 The ad7780 is a sigma-delta analog to digital converter. This driver provides 14 reading voltage values and status bits from both the ad778x and ad717x series. 15 Its interface also allows writing on the FILTER and GAIN GPIO pins on the 16 ad778x. 17 18 Specifications on the converters can be found at: 19 AD7170: 20 https://www.analog.com/media/en/technical-documentation/data-sheets/AD7170.pdf 21 AD7171: 22 https://www.analog.com/media/en/technical-documentation/data-sheets/AD7171.pdf 23 AD7780: 24 https://www.analog.com/media/en/technical-documentation/data-sheets/ad7780.pdf 25 AD7781: 26 https://www.analog.com/media/en/technical-documentation/data-sheets/AD7781.pdf 27 28properties: 29 compatible: 30 enum: 31 - adi,ad7170 32 - adi,ad7171 33 - adi,ad7780 34 - adi,ad7781 35 36 reg: 37 maxItems: 1 38 39 avdd-supply: 40 description: 41 The regulator supply for the ADC reference voltage. 42 43 powerdown-gpios: 44 description: 45 Must be the device tree identifier of the PDRST pin. If 46 specified, it will be asserted during driver probe. As the 47 line is active high, it should be marked GPIO_ACTIVE_HIGH. 48 maxItems: 1 49 50 adi,gain-gpios: 51 description: 52 Must be the device tree identifier of the GAIN pin. Only for 53 the ad778x chips. If specified, it will be asserted during 54 driver probe. As the line is active low, it should be marked 55 GPIO_ACTIVE_LOW. 56 maxItems: 1 57 58 adi,filter-gpios: 59 description: 60 Must be the device tree identifier of the FILTER pin. Only 61 for the ad778x chips. If specified, it will be asserted 62 during driver probe. As the line is active low, it should be 63 marked GPIO_ACTIVE_LOW. 64 maxItems: 1 65 66required: 67 - compatible 68 - reg 69 70additionalProperties: false 71 72examples: 73 - | 74 #include <dt-bindings/gpio/gpio.h> 75 spi0 { 76 #address-cells = <1>; 77 #size-cells = <0>; 78 79 adc@0 { 80 compatible = "adi,ad7780"; 81 reg = <0>; 82 83 avdd-supply = <&vdd_supply>; 84 powerdown-gpios = <&gpio0 12 GPIO_ACTIVE_HIGH>; 85 adi,gain-gpios = <&gpio1 5 GPIO_ACTIVE_LOW>; 86 adi,filter-gpios = <&gpio2 15 GPIO_ACTIVE_LOW>; 87 }; 88 };