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    SubjectRe: [PATCH v5 4/5] dt-bindings: iio: adc: ad7192: Add AD7194 support
    On Sat, Apr 13, 2024 at 10:13 AM Alisa-Dariana Roman
    <alisadariana@gmail.com> wrote:
    >
    > Unlike the other AD719Xs, AD7194 has configurable differential
    > channels. The user can dynamically configure them in the devicetree.
    >
    > Also add an example for AD7194 devicetree.
    >
    > Signed-off-by: Alisa-Dariana Roman <alisa.roman@analog.com>
    > ---
    > .../bindings/iio/adc/adi,ad7192.yaml | 74 +++++++++++++++++++
    > 1 file changed, 74 insertions(+)
    >
    > diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad7192.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ad7192.yaml
    > index ba506af3b73e..855f0a2d7d75 100644
    > --- a/Documentation/devicetree/bindings/iio/adc/adi,ad7192.yaml
    > +++ b/Documentation/devicetree/bindings/iio/adc/adi,ad7192.yaml
    > @@ -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
    >
    > @@ -104,8 +111,43 @@ required:
    > - spi-cpol
    > - spi-cpha
    >
    > +patternProperties:
    > + "^channel@[0-9]+$":
    > + type: object
    > + $ref: adc.yaml
    > + unevaluatedProperties: false
    > +
    > + properties:
    > + reg:
    > + description: The channel index.
    > + minimum: 1
    > + maximum: 256
    > +
    > + 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

    Don't we also need to allow 0 for AINCOM here? Or is this property
    only for fully differential pairs and not pseudo-differential pairs?


    > +
    > + required:
    > + - reg
    > + - diff-channels
    > +
    > allOf:
    > - $ref: /schemas/spi/spi-peripheral-props.yaml#
    > + - if:
    > + properties:
    > + compatible:
    > + enum:
    > + - adi,ad7190
    > + - adi,ad7192
    > + - adi,ad7193
    > + - adi,ad7195
    > + then:
    > + patternProperties:
    > + "^channel@[0-9]+$": false
    >
    > unevaluatedProperties: false
    >
    > @@ -136,3 +178,35 @@ examples:
    > adi,burnout-currents-enable;
    > };
    > };
    > + - |
    > + spi {
    > + #address-cells = <1>;
    > + #size-cells = <0>;
    > +
    > + adc@0 {
    > + #address-cells = <1>;
    > + #size-cells = <0>;
    > + compatible = "adi,ad7194";
    > + reg = <0>;
    > + spi-max-frequency = <1000000>;
    > + spi-cpol;
    > + spi-cpha;
    > + clocks = <&ad7192_mclk>;
    > + clock-names = "mclk";
    > + interrupts = <25 0x2>;
    > + interrupt-parent = <&gpio>;
    > + dvdd-supply = <&dvdd>;
    > + avdd-supply = <&avdd>;
    > + vref-supply = <&vref>;
    > +
    > + channel@1 {
    > + reg = <1>;
    > + diff-channels = <1 6>;
    > + };
    > +
    > + channel@2 {
    > + reg = <2>;
    > + diff-channels = <16 5>;
    > + };
    > + };
    > + };
    > --
    > 2.34.1
    >

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