linux-kernel - Re: [PATCH v4 3/4] dt-bindings: iio: adc: ad7192: Add AD7194 support

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Date: Wed, 28 Feb 2024 15:06:16 +0100
From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To: Alisa-Dariana Roman <alisadariana@...il.com>,
 michael.hennerich@...log.com, linux-iio@...r.kernel.org,
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Cc: lars@...afoo.de, jic23@...nel.org, robh+dt@...nel.org,
 krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org,
 andriy.shevchenko@...ux.intel.com, nuno.sa@...log.com,
 alisa.roman@...log.com, dlechner@...libre.com
Subject: Re: [PATCH v4 3/4] dt-bindings: iio: adc: ad7192: Add AD7194 support

On 28/02/2024 13:26, Alisa-Dariana Roman wrote:
> 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@...log.com>
> Signed-off-by: romandariana <alisa.roman@...log.com>

Something is not right here...

> ---
>  .../bindings/iio/adc/adi,ad7192.yaml          | 75 +++++++++++++++++++
>  1 file changed, 75 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/iio/adc/adi,ad7192.yaml b/Documentation/devicetree/bindings/iio/adc/adi,ad7192.yaml
> index 16def2985ab4..c62862760311 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
>  
> @@ -96,8 +103,44 @@ required:
>    - spi-cpol
>    - spi-cpha
>  
> +patternProperties:
> +  "^channel@([0-9]+)$":

No need for ()

> +    type: object
> +    $ref: adc.yaml
> +    unevaluatedProperties: false
> +
> +    properties:
> +      reg:
> +        description: The channel index.
> +        minimum: 1
> +        maximum: 16
> +
> +      diff-channels:
> +        description: |
> +          Both inputs can be connected to pins AIN1 to AIN16 by choosing the
> +          appropriate value from 1 to 16. The negative input can also be
> +          connected to AINCOM by choosing 0.
> +        items:
> +          minimum: 0
> +          maximum: 16
> +
> +    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

No need for ()

>  
>  unevaluatedProperties: false
>  
> @@ -127,3 +170,35 @@ examples:


Best regards,
Krzysztof