Re: [PATCH v3 1/2] dt-bindings: iio: adc: Document Renesas RZ/G2UL ADC

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Hi Biju,

On Wed, May 11, 2022 at 9:04 AM Biju Das <biju.das.jz@xxxxxxxxxxxxxx> 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@xxxxxxxxxxxxxx>
> ---
> v2->v3:
>  * Added generic description for reg.
>  * Improved schema validation by restricting both channel and reg to [0-1].

Thanks for the update!

> --- 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 +77,43 @@ 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
> +          properties:
> +            reg:
> +              description: |
> +                It can have up to 2 channels numbered from 0 to 1.

IMHO the description doesn't add any value, as it's equivalent to
the logic below.

> +              items:

I don't think the "items" is needed or wanted, as there can be
only one?

> +                - minimum: 0
> +                  maximum: 1

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds



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