Re: [PATCH v4 1/2] dt-bindings: iio: adc: Document Renesas RZ/G2UL ADC

[Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>]

On 11/05/2022 10:23, Biju Das wrote:
> Document Renesas RZ/G2UL ADC bindings. RZ/G2UL ADC is almost identical
> to RZ/G2L, but it has 2 analog input channels compared to 8 channels
> on the RZ/G2L.
> 
> Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
> ---
> v3->v4:
>  * Removed unnecessary SoC specific reg description as it is
>    equivalent to the logic used in reg.
>  * Removed Items from reg.
> v2->v3:
>  * Added generic description for reg.
>  * Improved schema validation by restricting both channel and reg to [0-1].
> v1->v2:
>  * Started using generic compatible for RZ/G2UL and added SoC specific validation
>    for channels.
> ---
>  .../bindings/iio/adc/renesas,rzg2l-adc.yaml   | 30 ++++++++++++++++---
>  1 file changed, 26 insertions(+), 4 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/iio/adc/renesas,rzg2l-adc.yaml b/Documentation/devicetree/bindings/iio/adc/renesas,rzg2l-adc.yaml
> index d66c24cae1e1..ae6226c1044e 100644
> --- a/Documentation/devicetree/bindings/iio/adc/renesas,rzg2l-adc.yaml
> +++ b/Documentation/devicetree/bindings/iio/adc/renesas,rzg2l-adc.yaml
> @@ -19,6 +19,7 @@ properties:
>    compatible:
>      items:
>        - enum:
> +          - renesas,r9a07g043-adc   # RZ/G2UL
>            - renesas,r9a07g044-adc   # RZ/G2L
>            - renesas,r9a07g054-adc   # RZ/V2L
>        - const: renesas,rzg2l-adc
> @@ -76,16 +77,37 @@ patternProperties:
>      properties:
>        reg:
>          description: |
> -          The channel number. It can have up to 8 channels numbered from 0 to 7.
> -        items:
> -          - minimum: 0
> -            maximum: 7
> +          The channel number.
>  
>      required:
>        - reg
>  
>      additionalProperties: false
>  
> +allOf:
> +  - if:
> +      properties:
> +        compatible:
> +          contains:
> +            const: renesas,r9a07g043-adc
> +    then:
> +      patternProperties:
> +        "^channel@[2-7]$": false
> +        "^channel@[0-1]$":
> +          type: object

The actual type was defined earlier - in your first "patternProperties"
- so this "type:object" should not be needed.

> +          properties:
> +            reg:
> +              minimum: 0
> +              maximum: 1
> +    else:
> +      patternProperties:
> +        "^channel@[0-7]$":
> +          type: object

Ditto.

With both removed:

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>


Best regards,
Krzysztof