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Message-ID: <e5c9eaaa-a8f3-4ca5-acf6-9ff714a07898@linaro.org>
Date:   Mon, 6 Nov 2023 09:56:57 +0100
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Subject: Re: [PATCH 2/3] dt-bindings: iio: adc: ad7192: Add AD7194 support
To:     alisadariana@gmail.com
Cc:     Alisa-Dariana Roman <alisa.roman@analog.com>,
        Lars-Peter Clausen <lars@metafoo.de>,
        Michael Hennerich <Michael.Hennerich@analog.com>,
        Alexandru Tachici <alexandru.tachici@analog.com>,
        Jonathan Cameron <jic23@kernel.org>,
        Rob Herring <robh+dt@kernel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
        Conor Dooley <conor+dt@kernel.org>,
        Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
        Maksim Kiselev <bigunclemax@gmail.com>,
        Arnd Bergmann <arnd@arndb.de>,
        Cosmin Tanislav <demonsingur@gmail.com>,
        Hugo Villeneuve <hvilleneuve@dimonoff.com>,
        Marius Cristea <marius.cristea@microchip.com>,
        Marcus Folkesson <marcus.folkesson@gmail.com>,
        Ibrahim Tilki <Ibrahim.Tilki@analog.com>,
        ChiaEn Wu <chiaen_wu@richtek.com>,
        Ivan Mikhaylov <fr0st61te@gmail.com>,
        Niklas Schnelle <schnelle@linux.ibm.com>,
        linux-iio@vger.kernel.org, devicetree@vger.kernel.org,
        linux-kernel@vger.kernel.org
References: <20231105193132.47009-1-alisadariana@gmail.com>
 <20231105193132.47009-3-alisadariana@gmail.com>
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From:   Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
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In-Reply-To: <20231105193132.47009-3-alisadariana@gmail.com>
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On 05/11/2023 20:31, alisadariana@gmail.com wrote:
> From: Alisa-Dariana Roman <alisa.roman@analog.com>
> 
> Unlike the other AD719Xs, AD7194 has configurable differential
> channels. The default configuration for these channels can be changed
> from 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          | 69 +++++++++++++++++++
>  1 file changed, 69 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad7192.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ad7192.yaml
> index 16def2985ab4..b9a9f7b20670 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
>  
> @@ -96,6 +103,31 @@ required:
>    - spi-cpol
>    - spi-cpha
>  
> +patternProperties:
> +  "^channel@([0-9a-f])$":
> +    type: object
> +    $ref: adc.yaml
> +    unevaluatedProperties: false
> +
> +    properties:
> +      reg:
> +        description: The channel index.
> +        minimum: 0
> +        maximum: 7

Your pattern a bit above is not correct then: [0-7]

> +
> +      diff-channels:
> +        description: |
> +          The differential channel pair for Ad7194 configurable channels. The
> +          first channel is the positive input, the second channel is the
> +          negative input.
> +        items:
> +          minimum: 1
> +          maximum: 16
> +
> +    required:
> +      - reg
> +      - diff-channels
> +
>  allOf:
>    - $ref: /schemas/spi/spi-peripheral-props.yaml#
>  
> @@ -127,3 +159,40 @@ 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>;
> +
> +            adi,refin2-pins-enable;
> +            adi,rejection-60-Hz-enable;
> +            adi,buffer-enable;
> +            adi,burnout-currents-enable;
> +
> +            channel@0 {

Why cannot you add this to the existing example?


Best regards,
Krzysztof