Re: [PATCH 2/2] dt-bindings: rtc: nxp,pcf8563: add quartz-load-femtofarads for pcf85263 and pcf85363

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On 13/02/2023 10:50, Javier Carrasco wrote:
> These RTCs are handled by the pcf85363 device driver, which now supports
> the quartz-load-femtofarads property.
> 
> Signed-off-by: Javier Carrasco <javier.carrasco@xxxxxxxxxxxxxx>
> ---
>  .../devicetree/bindings/rtc/nxp,pcf8563.yaml  | 20 ++++++++++++++++---
>  1 file changed, 17 insertions(+), 3 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/rtc/nxp,pcf8563.yaml b/Documentation/devicetree/bindings/rtc/nxp,pcf8563.yaml
> index a98b72752349..aac7f7565ba7 100644
> --- a/Documentation/devicetree/bindings/rtc/nxp,pcf8563.yaml
> +++ b/Documentation/devicetree/bindings/rtc/nxp,pcf8563.yaml
> @@ -9,9 +9,6 @@ title: Philips PCF8563/Epson RTC8564 Real Time Clock
>  maintainers:
>    - Alexandre Belloni <alexandre.belloni@xxxxxxxxxxx>
>  
> -allOf:
> -  - $ref: rtc.yaml#
> -
>  properties:
>    compatible:
>      enum:
> @@ -37,6 +34,23 @@ properties:
>    start-year: true
>    wakeup-source: true
>  
> +allOf:
> +  - $ref: rtc.yaml#
> +  - if:
> +      properties:
> +        compatible:
> +          contains:
> +            enum:
> +              - nxp,pcf85263
> +              - nxp,pcf85363
> +    then:
> +      properties:
> +        quartz-load-femtofarads:
> +          description:
> +            The capacitive load of the quartz(x-tal).
> +          enum: [6000, 7000, 12500]
> +          default: 7000

I don't think this will work. If you tested your DTS, you would see errors.

Please define the property in top-level and disallow it for other
variants. Other way to make it working would be to switch to
unevaluatedProperties, but defining properties in allOf:if:then: is not
that readable.

Best regards,
Krzysztof




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