linux-kernel - Re: [PATCH v2 1/3] dt-bindings: net: pse-pd: Update regex pattern for ethernet-pse nodes

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Message-ID: <1cce5a11-f182-04b0-0aa3-ed27614a564d@linaro.org>
Date:   Tue, 30 May 2023 16:04:03 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Oleksij Rempel <o.rempel@...gutronix.de>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Alexandre Torgue <alexandre.torgue@...s.st.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Jérôme Pouiller <jerome.pouiller@...abs.com>
Cc:     kernel@...gutronix.de, linux-kernel@...r.kernel.org,
        linux-stm32@...md-mailman.stormreply.com,
        linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
        netdev@...r.kernel.org
Subject: Re: [PATCH v2 1/3] dt-bindings: net: pse-pd: Update regex pattern for
 ethernet-pse nodes

On 30/05/2023 10:37, Oleksij Rempel wrote:
> This patch modifies the regex pattern for the $nodename property in the

Please do not use "This commit/patch", but imperative mood. See longer
explanation here:
https://elixir.bootlin.com/linux/v5.17.1/source/Documentation/process/submitting-patches.rst#L95

> device tree bindings documentation for PSE-PD controllers. The updated
> pattern allows for additional node names, including those with a hyphen
> followed by a hexadecimal digit.
> 
> Before this change, the pattern ^ethernet-pse(@.*)?$ only allowed for
> node names like "ethernet-pse" or "ethernet-pse@1". With the new pattern
> node names like "ethernet-pse-1" are now also valid.

This part is duplicating first paragraph. What you should have here is
answer to why we need it.

> 
> Signed-off-by: Oleksij Rempel <o.rempel@...gutronix.de>
> ---
>  .../devicetree/bindings/net/pse-pd/pse-controller.yaml          | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/Documentation/devicetree/bindings/net/pse-pd/pse-controller.yaml b/Documentation/devicetree/bindings/net/pse-pd/pse-controller.yaml
> index b110abb42597..3548efc2191c 100644
> --- a/Documentation/devicetree/bindings/net/pse-pd/pse-controller.yaml
> +++ b/Documentation/devicetree/bindings/net/pse-pd/pse-controller.yaml
> @@ -16,7 +16,7 @@ maintainers:
>  
>  properties:
>    $nodename:
> -    pattern: "^ethernet-pse(@.*)?$"
> +    pattern: "^ethernet-pse(@[0-9a-f]+|-([0-9a-f]+))?$"

No need for inner ()

Let's make -N suffix only decimal, as discussed here:
https://lore.kernel.org/all/20221123024153.GB1026269-robh@kernel.org/

I will send a patch for other files.

>  
>    "#pse-cells":
>      description:

Best regards,
Krzysztof