linux-kernel - Re: [PATCH net-next v2 2/2] dt-bindings: net: microchip,ksz: document microchip,rmii-clk-internal

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Message-ID: <20231012-unicorn-rambling-55dc66b78f2f@spud>
Date:   Thu, 12 Oct 2023 16:18:09 +0100
From:   Conor Dooley <conor@...nel.org>
To:     Ante Knezic <ante.knezic@...mholz.de>
Cc:     netdev@...r.kernel.org, woojung.huh@...rochip.com, andrew@...n.ch,
        f.fainelli@...il.com, olteanv@...il.com, davem@...emloft.net,
        edumazet@...gle.com, kuba@...nel.org, pabeni@...hat.com,
        robh+dt@...nel.org, krzysztof.kozlowski+dt@...aro.org,
        conor+dt@...nel.org, marex@...x.de, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next v2 2/2] dt-bindings: net: microchip,ksz:
 document microchip,rmii-clk-internal

On Thu, Oct 12, 2023 at 12:55:56PM +0200, Ante Knezic wrote:
> Add documentation for selecting reference rmii clock on KSZ88X3 devices
> 
> Signed-off-by: Ante Knezic <ante.knezic@...mholz.de>
> ---
>  .../devicetree/bindings/net/dsa/microchip,ksz.yaml    | 19 +++++++++++++++++++
>  1 file changed, 19 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/net/dsa/microchip,ksz.yaml b/Documentation/devicetree/bindings/net/dsa/microchip,ksz.yaml
> index 41014f5c01c4..eaa347b04db1 100644
> --- a/Documentation/devicetree/bindings/net/dsa/microchip,ksz.yaml
> +++ b/Documentation/devicetree/bindings/net/dsa/microchip,ksz.yaml
> @@ -72,6 +72,25 @@ properties:
>    interrupts:
>      maxItems: 1
>  
> +  microchip,rmii-clk-internal:
> +    $ref: /schemas/types.yaml#/definitions/flag
> +    description:
> +      Set if the RMII reference clock is provided internally. Otherwise
> +      reference clock should be provided externally.

I regret not asking this on the previous iteration - how come you need a
custom property? In the externally provided case would there not be a
clocks property pointing to the RMII reference clock, that would be
absent when provided by the itnernal reference?

Cheers,
Conor.

> +
> +if:
> +  not:
> +    properties:
> +      compatible:
> +        enum:
> +          - microchip,ksz8863
> +          - microchip,ksz8873
> +then:
> +  not:
> +    required:
> +      - microchip,rmii-clk-internal
> +
> +
>  required:
>    - compatible
>    - reg
> -- 
> 2.11.0
> 

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