Re: [PATCH 2/3] dt-bindings: pwm: rzg2l-gpt: Document renesas,poegs property

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On 04/11/2022 10:59, Biju Das wrote:
> RZ/G2L GPT IP supports output pin disable function by dead time
> error and detecting short-circuits between output pins.
> 
> Add documentation for the optional property renesas,poegs to
> link a pair of GPT IOs with POEG.
> 
> Signed-off-by: Biju Das <biju.das.jz@xxxxxxxxxxxxxx>
> ---
>  .../bindings/pwm/renesas,rzg2l-gpt.yaml       | 19 +++++++++++++++++++
>  1 file changed, 19 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/pwm/renesas,rzg2l-gpt.yaml b/Documentation/devicetree/bindings/pwm/renesas,rzg2l-gpt.yaml
> index 620d5ae4ae30..32f9deae89e5 100644
> --- a/Documentation/devicetree/bindings/pwm/renesas,rzg2l-gpt.yaml
> +++ b/Documentation/devicetree/bindings/pwm/renesas,rzg2l-gpt.yaml
> @@ -245,6 +245,24 @@ properties:
>    resets:
>      maxItems: 1
>  
> +  renesas,poegs:
> +    $ref: "/schemas/types.yaml#/definitions/phandle-array"

No need for quotes.

> +    items:

You miss here maxItems... but if you have just one item, then below
"items" should be " - items"

> +      items:
> +        - description: phandle to POEG instance that serves the output disable
> +        - description: An index identifying pair of GPT channels.
> +                       <0> - GPT channels 0 and 1
> +                       <1> - GPT channels 2 and 3
> +                       <2> - GPT channels 4 and 5
> +                       <3> - GPT channels 6 and 7
> +                       <4> - GPT channels 8 and 9
> +                       <5> - GPT channels 10 and 11
> +                       <6> - GPT channels 12 and 13
> +                       <7> - GPT channels 14 and 15

then this could bave enum or minimum/maximum. Can you try if these work?

> +    description:
> +      A list of phandle and channel index pair tuples to the POEGs that handle the
> +      output disable for the GPT channels.
> +
>  required:
>    - compatible
>    - reg
> @@ -375,4 +393,5 @@ examples:
>          power-domains = <&cpg>;
>          resets = <&cpg R9A07G044_GPT_RST_C>;
>          #pwm-cells = <2>;
> +        renesas,poegs = <&poeggd 4>;
>      };

Best regards,
Krzysztof




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