linux-kernel - Re: [PATCH v2 2/9] dt-bindings: net: snps,dwmac: Update the maxitems number of resets and reset-names

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Message-ID: <040b56b1-c65c-34c3-e4a1-5cae4428d1d2@linaro.org>
Date:   Fri, 16 Dec 2022 12:03:08 +0100
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Yanhong Wang <yanhong.wang@...rfivetech.com>,
        linux-riscv@...ts.infradead.org, netdev@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     "David S . Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Emil Renner Berthing <kernel@...il.dk>,
        Richard Cochran <richardcochran@...il.com>,
        Andrew Lunn <andrew@...n.ch>,
        Heiner Kallweit <hkallweit1@...il.com>,
        Peter Geis <pgwipeout@...il.com>
Subject: Re: [PATCH v2 2/9] dt-bindings: net: snps,dwmac: Update the maxitems
 number of resets and reset-names

On 16/12/2022 08:06, Yanhong Wang wrote:
> Some boards(such as StarFive VisionFive v2) require more than one value
> which defined by resets property, so the original definition can not
> meet the requirements. In order to adapt to different requirements,
> adjust the maxitems number from 1 to 3..
> 
> Signed-off-by: Yanhong Wang <yanhong.wang@...rfivetech.com>
> ---
>  .../devicetree/bindings/net/snps,dwmac.yaml       | 15 +++++++++++----
>  1 file changed, 11 insertions(+), 4 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/net/snps,dwmac.yaml b/Documentation/devicetree/bindings/net/snps,dwmac.yaml
> index e26c3e76ebb7..7870228b4cd3 100644
> --- a/Documentation/devicetree/bindings/net/snps,dwmac.yaml
> +++ b/Documentation/devicetree/bindings/net/snps,dwmac.yaml
> @@ -133,12 +133,19 @@ properties:
>          - ptp_ref
>  
>    resets:
> -    maxItems: 1
> -    description:
> -      MAC Reset signal.
> +    minItems: 1
> +    maxItems: 3
> +    additionalItems: true
> +    items:
> +      - description: MAC Reset signal
>  
>    reset-names:
> -    const: stmmaceth
> +    minItems: 1
> +    maxItems: 3
> +    additionalItems: true
> +    contains:
> +      enum:
> +        - stmmaceth

No, this is highly unspecific and you know affect all the schemas using
snps,dwmac.yaml. Both lists must be specific - for your device and for
others.

Best regards,
Krzysztof