Commit caf7b763 authored by Alisa-Dariana Roman's avatar Alisa-Dariana Roman Committed by Jonathan Cameron
Browse files

dt-bindings: iio: adc: ad7192: Add AD7194 support 



Unlike the other AD719Xs, AD7194 has configurable channels. The user can
dynamically configure them in the devicetree.

Also add an example for AD7194 devicetree.

Signed-off-by: default avatarAlisa-Dariana Roman <alisa.roman@analog.com>
Reviewed-by: default avatarConor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20240514120222.56488-6-alisa.roman@analog.com


Signed-off-by: default avatarJonathan Cameron <Jonathan.Cameron@huawei.com>
parent dd471a2b

Documentation/devicetree/bindings/iio/adc/adi,ad7192.yaml

+89 −0
Original line number Diff line number Diff line
@@ -21,8 +21,15 @@ properties: 
      - adi,ad7190

      - adi,ad7192

      - adi,ad7193

      - adi,ad7194

      - adi,ad7195



  "#address-cells":

    const: 1



  "#size-cells":

    const: 0



  reg:

    maxItems: 1
@@ -89,6 +96,42 @@ properties: 
    description: see Documentation/devicetree/bindings/iio/adc/adc.yaml

    type: boolean



patternProperties:

  "^channel@[0-9a-f]+$":

    type: object

    $ref: adc.yaml

    unevaluatedProperties: false



    properties:

      reg:

        description: The channel index.

        minimum: 0

        maximum: 271



      diff-channels:

        description:

          Both inputs can be connected to pins AIN1 to AIN16 by choosing the

          appropriate value from 1 to 16.

        items:

          minimum: 1

          maximum: 16



      single-channel:

        description:

          Positive input can be connected to pins AIN1 to AIN16 by choosing the

          appropriate value from 1 to 16. Negative input is connected to AINCOM.

        items:

          minimum: 1

          maximum: 16



    oneOf:

      - required:

          - reg

          - diff-channels

      - required:

          - reg

          - single-channel



required:

  - compatible

  - reg
@@ -103,6 +146,17 @@ required: 


allOf:

  - $ref: /schemas/spi/spi-peripheral-props.yaml#

  - if:

      properties:

        compatible:

          enum:

            - adi,ad7190

            - adi,ad7192

            - adi,ad7193

            - adi,ad7195

    then:

      patternProperties:

        "^channel@[0-9a-f]+$": false



unevaluatedProperties: false
@@ -133,3 +187,38 @@ examples: 
            adi,burnout-currents-enable;

        };

    };

  - |

    spi {

        #address-cells = <1>;

        #size-cells = <0>;



        adc@0 {

            compatible = "adi,ad7194";

            reg = <0>;



            #address-cells = <1>;

            #size-cells = <0>;



            spi-max-frequency = <1000000>;

            spi-cpol;

            spi-cpha;

            clocks = <&ad7192_mclk>;

            clock-names = "mclk";

            interrupts = <25 0x2>;

            interrupt-parent = <&gpio>;

            aincom-supply = <&aincom>;

            dvdd-supply = <&dvdd>;

            avdd-supply = <&avdd>;

            vref-supply = <&vref>;



            channel@0 {

                reg = <0>;

                diff-channels = <1 6>;

            };



            channel@1 {

                reg = <1>;

                single-channel = <1>;

            };

        };

    };