adi,ad5770r.yaml

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    1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
    2 # Copyright 2020 Analog Devices Inc.
    3 %YAML 1.2
    4 ---
    5 $id: http://devicetree.org/schemas/iio/dac/adi,ad5770r.yaml#
    6 $schema: http://devicetree.org/meta-schemas/core.yaml#
    7 
    8 title: Analog Devices AD5770R DAC device driver
    9 
   10 maintainers:
   11   - Alexandru Tachici <alexandru.tachici@analog.com>
   12 
   13 description: |
   14   Bindings for the Analog Devices AD5770R current DAC device. Datasheet can be
   15   found here:
   16     https://www.analog.com/media/en/technical-documentation/data-sheets/AD5770R.pdf
   17 
   18 properties:
   19   compatible:
   20     enum:
   21       - adi,ad5770r
   22 
   23   reg:
   24     maxItems: 1
   25 
   26   avdd-supply:
   27     description:
   28       AVdd voltage supply. Represents two different supplies in the datasheet
   29       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 no
   38       external reference declared then the device will use the
   39       internal reference of 1.25 V.
   40 
   41   adi,external-resistor:
   42     description: Specify if an external 2.5k ohm resistor is used. If not
   43       specified the device will use an internal 2.5k ohm resistor.
   44       The precision resistor is used for reference current generation.
   45     type: boolean
   46 
   47   reset-gpios:
   48     description: GPIO spec for the RESET pin. If specified, it will be
   49       asserted during driver probe.
   50     maxItems: 1
   51 
   52   spi-max-frequency: true
   53 
   54   '#address-cells':
   55     const: 1
   56 
   57   '#size-cells':
   58     const: 0
   59 
   60   channel@0:
   61     description: Represents an external channel which are
   62       connected to the DAC. Channel 0 can act both as a current
   63       source and sink.
   64     type: object
   65 
   66     properties:
   67       reg:
   68         description: This represents the channel number.
   69         const: 0
   70 
   71       adi,range-microamp:
   72         description: Output range of the channel.
   73         oneOf:
   74           - items:
   75               - const: 0
   76               - const: 300000
   77           - items:
   78               - const: -60000
   79               - const: 0
   80           - items:
   81               - const: -60000
   82               - const: 300000
   83 
   84   channel@1:
   85     description: Represents an external channel which are
   86       connected to the DAC.
   87     type: object
   88 
   89     properties:
   90       reg:
   91         description: This represents the channel number.
   92         const: 1
   93 
   94       adi,range-microamp:
   95         description: Output range of the channel.
   96         items:
   97           - const: 0
   98           - enum: [140000, 250000]
   99 
  100   channel@2:
  101     description: Represents an external channel which are
  102       connected to the DAC.
  103     type: object
  104 
  105     properties:
  106       reg:
  107         description: This represents the channel number.
  108         const: 2
  109 
  110       adi,range-microamp:
  111         description: Output range of the channel.
  112         items:
  113           - const: 0
  114           - enum: [55000, 150000]
  115 
  116 patternProperties:
  117   "^channel@([3-5])$":
  118     type: object
  119     description: Represents the external channels which are connected to the DAC.
  120     properties:
  121       reg:
  122         description: This represents the channel number.
  123         minimum: 3
  124         maximum: 5
  125 
  126       adi,range-microamp:
  127         description: Output range of the channel.
  128         items:
  129           - const: 0
  130           - enum: [45000, 100000]
  131 
  132 required:
  133   - reg
  134   - channel@0
  135   - channel@1
  136   - channel@2
  137   - channel@3
  138   - channel@4
  139   - channel@5
  140 
  141 additionalProperties: false
  142 
  143 examples:
  144   - |
  145         spi {
  146                 #address-cells = <1>;
  147                 #size-cells = <0>;
  148 
  149                 ad5770r@0 {
  150                         compatible = "adi,ad5770r";
  151                         reg = <0>;
  152                         spi-max-frequency = <1000000>;
  153                         vref-supply = <&vref>;
  154                         adi,external-resistor;
  155                         reset-gpios = <&gpio 22 0>;
  156                         #address-cells = <1>;
  157                         #size-cells = <0>;
  158 
  159                         channel@0 {
  160                                 reg = <0>;
  161                                 adi,range-microamp = <0 300000>;
  162                         };
  163 
  164                         channel@1 {
  165                                 reg = <1>;
  166                                 adi,range-microamp = <0 140000>;
  167                         };
  168 
  169                         channel@2 {
  170                                 reg = <2>;
  171                                 adi,range-microamp = <0 55000>;
  172                         };
  173 
  174                         channel@3 {
  175                                 reg = <3>;
  176                                 adi,range-microamp = <0 45000>;
  177                         };
  178 
  179                         channel@4 {
  180                                 reg = <4>;
  181                                 adi,range-microamp = <0 45000>;
  182                         };
  183 
  184                         channel@5 {
  185                                 reg = <5>;
  186                                 adi,range-microamp = <0 45000>;
  187                         };
  188                 };
  189         };
  190 ...

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sys/contrib/device-tree/Bindings/iio/dac/adi,ad5770r.yaml