adi,ad7768-1.yaml

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    1 # SPDX-License-Identifier: GPL-2.0
    2 %YAML 1.2
    3 ---
    4 $id: http://devicetree.org/schemas/iio/adc/adi,ad7768-1.yaml#
    5 $schema: http://devicetree.org/meta-schemas/core.yaml#
    6 
    7 title: Analog Devices AD7768-1 ADC device driver
    8 
    9 maintainers:
   10   - Michael Hennerich <michael.hennerich@analog.com>
   11 
   12 description: |
   13   Datasheet at:
   14     https://www.analog.com/media/en/technical-documentation/data-sheets/ad7768-1.pdf
   15 
   16 properties:
   17   compatible:
   18     const: adi,ad7768-1
   19 
   20   reg:
   21     maxItems: 1
   22 
   23   clocks:
   24     maxItems: 1
   25 
   26   clock-names:
   27     const: mclk
   28 
   29   interrupts:
   30     maxItems: 1
   31 
   32   '#address-cells':
   33     const: 1
   34 
   35   '#size-cells':
   36     const: 0
   37 
   38   vref-supply:
   39     description:
   40       ADC reference voltage supply
   41 
   42   adi,sync-in-gpios:
   43     maxItems: 1
   44     description:
   45       Enables synchronization of multiple devices that require simultaneous
   46       sampling. A pulse is always required if the configuration is changed
   47       in any way, for example if the filter decimation rate changes.
   48       As the line is active low, it should be marked GPIO_ACTIVE_LOW.
   49 
   50   reset-gpios:
   51     maxItems: 1
   52 
   53   spi-max-frequency: true
   54 
   55   spi-cpol: true
   56 
   57   spi-cpha: true
   58 
   59   "#io-channel-cells":
   60     const: 1
   61 
   62 required:
   63   - compatible
   64   - reg
   65   - clocks
   66   - clock-names
   67   - vref-supply
   68   - spi-cpol
   69   - spi-cpha
   70   - adi,sync-in-gpios
   71 
   72 patternProperties:
   73   "^channel@([0-9]|1[0-5])$":
   74     type: object
   75     description: |
   76       Represents the external channels which are connected to the device.
   77 
   78     properties:
   79       reg:
   80         maxItems: 1
   81         description: |
   82           The channel number.
   83 
   84       label:
   85         description: |
   86           Unique name to identify which channel this is.
   87     required:
   88       - reg
   89     additionalProperties: false
   90 
   91 additionalProperties: false
   92 
   93 examples:
   94   - |
   95     #include <dt-bindings/interrupt-controller/irq.h>
   96     #include <dt-bindings/gpio/gpio.h>
   97     spi {
   98         #address-cells = <1>;
   99         #size-cells = <0>;
  100 
  101         adc@0 {
  102             compatible = "adi,ad7768-1";
  103             reg = <0>;
  104             spi-max-frequency = <2000000>;
  105             spi-cpol;
  106             spi-cpha;
  107             vref-supply = <&adc_vref>;
  108             interrupts = <25 IRQ_TYPE_EDGE_RISING>;
  109             interrupt-parent = <&gpio>;
  110             adi,sync-in-gpios = <&gpio 22 GPIO_ACTIVE_LOW>;
  111             reset-gpios = <&gpio 27 GPIO_ACTIVE_LOW>;
  112             clocks = <&ad7768_mclk>;
  113             clock-names = "mclk";
  114 
  115             #address-cells = <1>;
  116             #size-cells = <0>;
  117 
  118             channel@0 {
  119                 reg = <0>;
  120                 label = "channel_0";
  121             };
  122         };
  123     };
  124 ...

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sys/contrib/device-tree/Bindings/iio/adc/adi,ad7768-1.yaml