adi,ad5758.yaml

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    1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
    2 %YAML 1.2
    3 ---
    4 $id: http://devicetree.org/schemas/iio/dac/adi,ad5758.yaml#
    5 $schema: http://devicetree.org/meta-schemas/core.yaml#
    6 
    7 title: Analog Devices AD5758 DAC
    8 
    9 maintainers:
   10   - Michael Hennerich <Michael.Hennerich@analog.com>
   11 
   12 properties:
   13   compatible:
   14     const: adi,ad5758
   15 
   16   reg:
   17     maxItems: 1
   18 
   19   spi-max-frequency: true
   20   spi-cpha: true
   21 
   22   adi,dc-dc-mode:
   23     $ref: /schemas/types.yaml#/definitions/uint32
   24     enum: [1, 2, 3]
   25     description: |
   26       Mode of operation of the dc-to-dc converter
   27       Dynamic Power Control (DPC)
   28       In this mode, the AD5758 circuitry senses the output voltage and
   29       dynamically regulates the supply voltage, VDPC+, to meet compliance
   30       requirements plus an optimized headroom voltage for the output buffer.
   31 
   32       Programmable Power Control (PPC)
   33       In this mode, the VDPC+ voltage is user-programmable to a fixed level
   34       that needs to accommodate the maximum output load required.
   35 
   36       The output of the DAC core is either converted to a current or
   37       voltage output at the VIOUT pin. Only one mode can be enabled at
   38       any one time.
   39 
   40       The following values are currently supported:
   41       * 1: DPC current mode
   42       * 2: DPC voltage mode
   43       * 3: PPC current mode
   44 
   45       Depending on the selected output mode (voltage or current) one of the
   46       two properties must be present:
   47 
   48   adi,range-microvolt:
   49     description: |
   50       Voltage output range specified as <minimum, maximum>
   51     oneOf:
   52       - items:
   53           - const: 0
   54           - enum: [5000000, 10000000]
   55       - items:
   56           - const: -5000000
   57           - const: 5000000
   58       - items:
   59           - const: -10000000
   60           - const: 10000000
   61 
   62   adi,range-microamp:
   63     description: |
   64       Current output range specified as <minimum, maximum>
   65     oneOf:
   66       - items:
   67           - const: 0
   68           - enum: [20000, 24000]
   69       - items:
   70           - const: 4
   71           - const: 24000
   72       - items:
   73           - const: -20000
   74           - const: 20000
   75       - items:
   76           - const: -24000
   77           - const: 24000
   78       - items:
   79           - const: -1000
   80           - const: 22000
   81 
   82   reset-gpios: true
   83 
   84   adi,dc-dc-ilim-microamp:
   85     enum: [150000, 200000, 250000, 300000, 350000, 400000]
   86     description: |
   87       The dc-to-dc converter current limit.
   88 
   89   adi,slew-time-us:
   90     description: |
   91       The time it takes for the output to reach the full scale [uS]
   92     minimum: 133
   93     maximum: 1023984375
   94 
   95 required:
   96   - compatible
   97   - reg
   98   - spi-cpha
   99   - adi,dc-dc-mode
  100 
  101 allOf:
  102   - if:
  103       properties:
  104         adi,dc-dc-mode:
  105           contains:
  106             enum: [1, 3]
  107     then:
  108       properties:
  109         adi,range-microvolt: false
  110       required:
  111         - adi,range-microamp
  112     else:
  113       properties:
  114         adi,range-microamp: false
  115       required:
  116         - adi,range-microvolt
  117 
  118 additionalProperties: false
  119 
  120 examples:
  121   - |
  122     spi {
  123         #address-cells = <1>;
  124         #size-cells = <0>;
  125 
  126         dac@0 {
  127             compatible = "adi,ad5758";
  128             reg = <0>;
  129             spi-max-frequency = <1000000>;
  130             spi-cpha;
  131 
  132             reset-gpios = <&gpio 22 0>;
  133 
  134             adi,dc-dc-mode = <2>;
  135             adi,range-microvolt = <0 10000000>;
  136             adi,dc-dc-ilim-microamp = <200000>;
  137             adi,slew-time-us = <125000>;
  138         };
  139     };
  140 ...

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sys/contrib/device-tree/Bindings/iio/dac/adi,ad5758.yaml