adi,ad7124.yaml

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    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 $schema: http://devicetree.org/meta-schemas/core.yaml#
    7 
    8 title: Analog Devices AD7124 ADC device driver
    9 
   10 maintainers:
   11   - Stefan Popa <stefan.popa@analog.com>
   12 
   13 description: |
   14   Bindings for the Analog Devices AD7124 ADC device. Datasheet can be
   15   found here:
   16     https://www.analog.com/media/en/technical-documentation/data-sheets/AD7124-8.pdf
   17 
   18 properties:
   19   compatible:
   20     enum:
   21       - adi,ad7124-4
   22       - adi,ad7124-8
   23 
   24   reg:
   25     description: SPI chip select number for the device
   26     maxItems: 1
   27 
   28   clocks:
   29     maxItems: 1
   30     description: phandle to the master clock (mclk)
   31 
   32   clock-names:
   33     items:
   34       - const: mclk
   35 
   36   interrupts:
   37     description: IRQ line for the ADC
   38     maxItems: 1
   39 
   40   '#address-cells':
   41     const: 1
   42 
   43   '#size-cells':
   44     const: 0
   45 
   46   refin1-supply:
   47     description: refin1 supply can be used as reference for conversion.
   48 
   49   refin2-supply:
   50     description: refin2 supply can be used as reference for conversion.
   51 
   52   avdd-supply:
   53     description: avdd supply can be used as reference for conversion.
   54 
   55   spi-max-frequency: true
   56 
   57 required:
   58   - compatible
   59   - reg
   60   - clocks
   61   - clock-names
   62   - interrupts
   63 
   64 patternProperties:
   65   "^channel@([0-9]|1[0-5])$":
   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 
  109 additionalProperties: false
  110 
  111 examples:
  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     };

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FreeBSD/Linux Kernel Cross Reference sys/contrib/device-tree/Bindings/iio/adc/adi,ad7124.yaml

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sys/contrib/device-tree/Bindings/iio/adc/adi,ad7124.yaml