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1# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)2# Copyright 2020 Analog Devices Inc.3%YAML 1.24---5$id: http://devicetree.org/schemas/iio/dac/adi,ad5770r.yaml#6$schema: http://devicetree.org/meta-schemas/core.yaml#7 8title: Analog Devices AD5770R DAC device driver9 10maintainers:11 - Alexandru Tachici <alexandru.tachici@analog.com>12 13description: |14 Bindings for the Analog Devices AD5770R current DAC device. Datasheet can be15 found here:16 https://www.analog.com/media/en/technical-documentation/data-sheets/AD5770R.pdf17 18properties:19 compatible:20 enum:21 - adi,ad5770r22 23 reg:24 maxItems: 125 26 avdd-supply:27 description:28 AVdd voltage supply. Represents two different supplies in the datasheet29 that are in fact the same.30 31 iovdd-supply:32 description:33 Voltage supply for the chip interface.34 35 vref-supply:36 description: Specify the voltage of the external reference used.37 Available reference options are 1.25 V or 2.5 V. If no38 external reference declared then the device will use the39 internal reference of 1.25 V.40 41 adi,external-resistor:42 description: Specify if an external 2.5k ohm resistor is used. If not43 specified the device will use an internal 2.5k ohm resistor.44 The precision resistor is used for reference current generation.45 type: boolean46 47 reset-gpios:48 description: GPIO spec for the RESET pin. If specified, it will be49 asserted during driver probe.50 maxItems: 151 52 '#address-cells':53 const: 154 55 '#size-cells':56 const: 057 58 channel@0:59 description: Represents an external channel which are60 connected to the DAC. Channel 0 can act both as a current61 source and sink.62 type: object63 additionalProperties: false64 65 properties:66 reg:67 description: This represents the channel number.68 const: 069 70 adi,range-microamp:71 description: Output range of the channel.72 oneOf:73 - items:74 - const: 075 - const: 30000076 - items:77 - const: -6000078 - const: 079 - items:80 - const: -6000081 - const: 30000082 83 channel@1:84 description: Represents an external channel which are85 connected to the DAC.86 type: object87 additionalProperties: false88 89 properties:90 reg:91 description: This represents the channel number.92 const: 193 94 adi,range-microamp:95 description: Output range of the channel.96 items:97 - const: 098 - enum: [140000, 250000]99 100 channel@2:101 description: Represents an external channel which are102 connected to the DAC.103 type: object104 additionalProperties: false105 106 properties:107 reg:108 description: This represents the channel number.109 const: 2110 111 adi,range-microamp:112 description: Output range of the channel.113 items:114 - const: 0115 - enum: [55000, 150000]116 117patternProperties:118 "^channel@([3-5])$":119 type: object120 additionalProperties: false121 description: Represents the external channels which are connected to the DAC.122 properties:123 reg:124 description: This represents the channel number.125 minimum: 3126 maximum: 5127 128 adi,range-microamp:129 description: Output range of the channel.130 items:131 - const: 0132 - enum: [45000, 100000]133 134required:135 - reg136 - channel@0137 - channel@1138 - channel@2139 - channel@3140 - channel@4141 - channel@5142 143allOf:144 - $ref: /schemas/spi/spi-peripheral-props.yaml#145 146unevaluatedProperties: false147 148examples:149 - |150 spi {151 #address-cells = <1>;152 #size-cells = <0>;153 154 ad5770r@0 {155 compatible = "adi,ad5770r";156 reg = <0>;157 spi-max-frequency = <1000000>;158 vref-supply = <&vref>;159 adi,external-resistor;160 reset-gpios = <&gpio 22 0>;161 #address-cells = <1>;162 #size-cells = <0>;163 164 channel@0 {165 reg = <0>;166 adi,range-microamp = <0 300000>;167 };168 169 channel@1 {170 reg = <1>;171 adi,range-microamp = <0 140000>;172 };173 174 channel@2 {175 reg = <2>;176 adi,range-microamp = <0 55000>;177 };178 179 channel@3 {180 reg = <3>;181 adi,range-microamp = <0 45000>;182 };183 184 channel@4 {185 reg = <4>;186 adi,range-microamp = <0 45000>;187 };188 189 channel@5 {190 reg = <5>;191 adi,range-microamp = <0 45000>;192 };193 };194 };195...196