adi,ad7124.yaml (3473B)
1# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) 2# Copyright 2019 Analog Devices Inc. 3%YAML 1.2 4--- 5$id: http://devicetree.org/schemas/iio/adc/adi,ad7124.yaml# 6$schema: http://devicetree.org/meta-schemas/core.yaml# 7 8title: Analog Devices AD7124 ADC device driver 9 10maintainers: 11 - Stefan Popa <stefan.popa@analog.com> 12 13description: | 14 Bindings for the Analog Devices AD7124 ADC device. Datasheet can be 15 found here: 16 https://www.analog.com/media/en/technical-documentation/data-sheets/AD7124-8.pdf 17 18properties: 19 compatible: 20 enum: 21 - adi,ad7124-4 22 - adi,ad7124-8 23 24 reg: 25 description: SPI chip select number for the device 26 maxItems: 1 27 28 clocks: 29 maxItems: 1 30 description: phandle to the master clock (mclk) 31 32 clock-names: 33 items: 34 - const: mclk 35 36 interrupts: 37 description: IRQ line for the ADC 38 maxItems: 1 39 40 '#address-cells': 41 const: 1 42 43 '#size-cells': 44 const: 0 45 46 refin1-supply: 47 description: refin1 supply can be used as reference for conversion. 48 49 refin2-supply: 50 description: refin2 supply can be used as reference for conversion. 51 52 avdd-supply: 53 description: avdd supply can be used as reference for conversion. 54 55 spi-max-frequency: true 56 57required: 58 - compatible 59 - reg 60 - clocks 61 - clock-names 62 - interrupts 63 64patternProperties: 65 "^channel@([0-9]|1[0-5])$": 66 $ref: "adc.yaml" 67 type: object 68 description: | 69 Represents the external channels which are connected to the ADC. 70 71 properties: 72 reg: 73 description: | 74 The channel number. It can have up to 8 channels on ad7124-4 75 and 16 channels on ad7124-8, numbered from 0 to 15. 76 items: 77 minimum: 0 78 maximum: 15 79 80 adi,reference-select: 81 description: | 82 Select the reference source to use when converting on 83 the specific channel. Valid values are: 84 0: REFIN1(+)/REFIN1(−). 85 1: REFIN2(+)/REFIN2(−). 86 3: AVDD 87 If this field is left empty, internal reference is selected. 88 $ref: /schemas/types.yaml#/definitions/uint32 89 enum: [0, 1, 3] 90 91 diff-channels: true 92 93 bipolar: true 94 95 adi,buffered-positive: 96 description: Enable buffered mode for positive input. 97 type: boolean 98 99 adi,buffered-negative: 100 description: Enable buffered mode for negative input. 101 type: boolean 102 103 required: 104 - reg 105 - diff-channels 106 107 additionalProperties: false 108 109additionalProperties: false 110 111examples: 112 - | 113 spi { 114 #address-cells = <1>; 115 #size-cells = <0>; 116 117 adc@0 { 118 compatible = "adi,ad7124-4"; 119 reg = <0>; 120 spi-max-frequency = <5000000>; 121 interrupts = <25 2>; 122 interrupt-parent = <&gpio>; 123 refin1-supply = <&adc_vref>; 124 clocks = <&ad7124_mclk>; 125 clock-names = "mclk"; 126 127 #address-cells = <1>; 128 #size-cells = <0>; 129 130 channel@0 { 131 reg = <0>; 132 diff-channels = <0 1>; 133 adi,reference-select = <0>; 134 adi,buffered-positive; 135 }; 136 137 channel@1 { 138 reg = <1>; 139 bipolar; 140 diff-channels = <2 3>; 141 adi,reference-select = <0>; 142 adi,buffered-positive; 143 adi,buffered-negative; 144 }; 145 146 channel@2 { 147 reg = <2>; 148 diff-channels = <4 5>; 149 }; 150 151 channel@3 { 152 reg = <3>; 153 diff-channels = <6 7>; 154 }; 155 }; 156 };