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1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)2%YAML 1.23---4$id: http://devicetree.org/schemas/iio/addac/adi,ad74413r.yaml#5$schema: http://devicetree.org/meta-schemas/core.yaml#6 7title: Analog Devices AD74412R/AD74413R device8 9maintainers:10 - Cosmin Tanislav <cosmin.tanislav@analog.com>11 12description: |13 The AD74412R and AD74413R are quad-channel software configurable input/output14 solutions for building and process control applications. They contain15 functionality for analog output, analog input, digital input, resistance16 temperature detector, and thermocouple measurements integrated17 into a single chip solution with an SPI interface.18 The devices feature a 16-bit ADC and four configurable 13-bit DACs to provide19 four configurable input/output channels and a suite of diagnostic functions.20 The AD74413R differentiates itself from the AD74412R by being HART-compatible.21 https://www.analog.com/en/products/ad74412r.html22 https://www.analog.com/en/products/ad74413r.html23 24properties:25 compatible:26 enum:27 - adi,ad74412r28 - adi,ad74413r29 30 reg:31 maxItems: 132 33 '#address-cells':34 const: 135 36 '#size-cells':37 const: 038 39 spi-max-frequency:40 maximum: 100000041 42 spi-cpol: true43 44 interrupts:45 maxItems: 146 47 refin-supply: true48 49 shunt-resistor-micro-ohms:50 description:51 Shunt (sense) resistor value in micro-Ohms.52 default: 10000000053 54 reset-gpios:55 maxItems: 156 57required:58 - compatible59 - reg60 - spi-max-frequency61 - spi-cpol62 - refin-supply63 64patternProperties:65 "^channel@[0-3]$":66 type: object67 additionalProperties: false68 description: Represents the external channels which are connected to the device.69 70 properties:71 reg:72 description: |73 The channel number. It can have up to 4 channels numbered from 0 to 3.74 minimum: 075 maximum: 376 77 adi,ch-func:78 $ref: /schemas/types.yaml#/definitions/uint3279 description: |80 Channel function.81 HART functions are not supported on AD74412R.82 0 - CH_FUNC_HIGH_IMPEDANCE83 1 - CH_FUNC_VOLTAGE_OUTPUT84 2 - CH_FUNC_CURRENT_OUTPUT85 3 - CH_FUNC_VOLTAGE_INPUT86 4 - CH_FUNC_CURRENT_INPUT_EXT_POWER87 5 - CH_FUNC_CURRENT_INPUT_LOOP_POWER88 6 - CH_FUNC_RESISTANCE_INPUT89 7 - CH_FUNC_DIGITAL_INPUT_LOGIC90 8 - CH_FUNC_DIGITAL_INPUT_LOOP_POWER91 9 - CH_FUNC_CURRENT_INPUT_EXT_POWER_HART92 10 - CH_FUNC_CURRENT_INPUT_LOOP_POWER_HART93 minimum: 094 maximum: 1095 default: 096 97 adi,gpo-comparator:98 type: boolean99 description: |100 Whether to configure GPO as a comparator or not.101 When not configured as a comparator, the GPO will be treated as an102 output-only GPIO.103 104 drive-strength-microamp:105 description: |106 For channels configured as digital input, this configures the sink107 current.108 minimum: 0109 maximum: 1800110 default: 0111 multipleOf: 120112 113 required:114 - reg115 116allOf:117 - $ref: /schemas/spi/spi-peripheral-props.yaml#118 119unevaluatedProperties: false120 121examples:122 - |123 #include <dt-bindings/gpio/gpio.h>124 #include <dt-bindings/interrupt-controller/irq.h>125 #include <dt-bindings/iio/addac/adi,ad74413r.h>126 127 spi {128 #address-cells = <1>;129 #size-cells = <0>;130 131 addac@0 {132 compatible = "adi,ad74413r";133 reg = <0>;134 spi-max-frequency = <1000000>;135 spi-cpol;136 137 #address-cells = <1>;138 #size-cells = <0>;139 140 interrupt-parent = <&gpio>;141 interrupts = <26 IRQ_TYPE_EDGE_FALLING>;142 143 refin-supply = <&ad74413r_refin>;144 reset-gpios = <&gpio2 6 GPIO_ACTIVE_LOW>;145 146 channel@0 {147 reg = <0>;148 149 adi,ch-func = <CH_FUNC_VOLTAGE_OUTPUT>;150 };151 152 channel@1 {153 reg = <1>;154 155 adi,ch-func = <CH_FUNC_CURRENT_OUTPUT>;156 };157 158 channel@2 {159 reg = <2>;160 161 adi,ch-func = <CH_FUNC_DIGITAL_INPUT_LOGIC>;162 adi,gpo-comparator;163 };164 165 channel@3 {166 reg = <3>;167 168 adi,ch-func = <CH_FUNC_CURRENT_INPUT_EXT_POWER>;169 };170 };171 };172...173