adi,ltc2688.yaml

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    1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
    2 %YAML 1.2
    3 ---
    4 $id: http://devicetree.org/schemas/iio/dac/adi,ltc2688.yaml#
    5 $schema: http://devicetree.org/meta-schemas/core.yaml#
    6 
    7 title: Analog Devices LTC2688 DAC
    8 
    9 maintainers:
   10   - Nuno Sá <nuno.sa@analog.com>
   11 
   12 description: |
   13   Analog Devices LTC2688 16 channel, 16 bit, +-15V DAC
   14   https://www.analog.com/media/en/technical-documentation/data-sheets/ltc2688.pdf
   15 
   16 properties:
   17   compatible:
   18     enum:
   19       - adi,ltc2688
   20 
   21   reg:
   22     maxItems: 1
   23 
   24   vcc-supply:
   25     description: Analog Supply Voltage Input.
   26 
   27   iovcc-supply:
   28     description: Digital Input/Output Supply Voltage.
   29 
   30   vref-supply:
   31     description:
   32       Reference Input/Output. The voltage at the REF pin sets the full-scale
   33       range of all channels. If not provided the internal reference is used and
   34       also provided on the VREF pin".
   35 
   36   clr-gpios:
   37     description:
   38       If specified, it will be asserted during driver probe. As the line is
   39       active low, it should be marked GPIO_ACTIVE_LOW.
   40     maxItems: 1
   41 
   42   '#address-cells':
   43     const: 1
   44 
   45   '#size-cells':
   46     const: 0
   47 
   48 patternProperties:
   49   "^channel@([0-9]|1[0-5])$":
   50     type: object
   51 
   52     properties:
   53       reg:
   54         description: The channel number representing the DAC output channel.
   55         maximum: 15
   56 
   57       adi,toggle-mode:
   58         description:
   59           Set the channel as a toggle enabled channel. Toggle operation enables
   60           fast switching of a DAC output between two different DAC codes without
   61           any SPI transaction.
   62         type: boolean
   63 
   64       adi,output-range-microvolt:
   65         description: Specify the channel output full scale range.
   66         oneOf:
   67           - items:
   68               - const: 0
   69               - enum: [5000000, 10000000]
   70           - items:
   71               - const: -5000000
   72               - const: 5000000
   73           - items:
   74               - const: -10000000
   75               - const: 10000000
   76           - items:
   77               - const: -15000000
   78               - const: 15000000
   79 
   80       adi,overrange:
   81         description: Enable 5% overrange over the selected full scale range.
   82         type: boolean
   83 
   84       clocks:
   85         maxItems: 1
   86 
   87       adi,toggle-dither-input:
   88         description:
   89           Selects the TGPx pin to be associated with this channel. This setting
   90           only makes sense for toggle or dither enabled channels. If
   91           @adi,toggle-mode is not set and this property is given, the channel is
   92           assumed to be a dither capable channel. Note that multiple channels
   93           can be mapped to the same pin. If this setting is given, the
   94           respective @clock must also be provided. Mappings between this and
   95           input pins
   96             0 - TGP1
   97             1 - TGP2
   98             2 - TGP3
   99         $ref: /schemas/types.yaml#/definitions/uint32
  100         enum: [0, 1, 2]
  101 
  102     dependencies:
  103       adi,toggle-dither-input: [ clocks ]
  104 
  105     required:
  106       - reg
  107 
  108 required:
  109   - compatible
  110   - reg
  111 
  112 additionalProperties: false
  113 
  114 examples:
  115   - |
  116 
  117     spi {
  118           #address-cells = <1>;
  119           #size-cells = <0>;
  120           ltc2688: ltc2688@0 {
  121                   compatible = "adi,ltc2688";
  122                   reg = <0>;
  123 
  124                   vcc-supply = <&vcc>;
  125                   iovcc-supply = <&vcc>;
  126                   vref-supply = <&vref>;
  127 
  128                   #address-cells = <1>;
  129                   #size-cells = <0>;
  130                   channel@0 {
  131                           reg = <0>;
  132                           adi,toggle-mode;
  133                           adi,overrange;
  134                   };
  135 
  136                   channel@1 {
  137                           reg = <1>;
  138                           adi,output-range-microvolt = <0 10000000>;
  139 
  140                           clocks = <&clock_tgp3>;
  141                           adi,toggle-dither-input = <2>;
  142                   };
  143           };
  144     };
  145 
  146 ...

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FreeBSD/Linux Kernel Cross Reference sys/contrib/device-tree/Bindings/iio/dac/adi,ltc2688.yaml

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sys/contrib/device-tree/Bindings/iio/dac/adi,ltc2688.yaml