netdev - Re: [resend PATCH v4 2/2] dt-bindings: net: snps,dwmac: add clk

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Date:   Fri, 23 Sep 2022 11:23:12 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Jianguo Zhang <jianguo.zhang@...iatek.com>,
        "David S . Miller" <davem@...emloft.net>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>
Cc:     Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Giuseppe Cavallaro <peppe.cavallaro@...com>,
        Alexandre Torgue <alexandre.torgue@...s.st.com>,
        Jose Abreu <joabreu@...opsys.com>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Biao Huang <biao.huang@...iatek.com>, netdev@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-stm32@...md-mailman.stormreply.com,
        linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org,
        Christophe Roullier <christophe.roullier@...com>
Subject: Re: [resend PATCH v4 2/2] dt-bindings: net: snps,dwmac: add clk_csr
 property

On 23/09/2022 03:48, Jianguo Zhang wrote:
> Dear Krzysztof,
> 
> 	Thanks for your comment.
> 
> On Thu, 2022-09-22 at 17:07 +0200, Krzysztof Kozlowski wrote:
>> On 22/09/2022 11:27, Jianguo Zhang wrote:
>>> The clk_csr property is parsed in driver for generating MDC clock
>>> with correct frequency. A warning('clk_csr' was unexpeted) is
>>> reported
>>> when runing 'make_dtbs_check' because the clk_csr property
>>> has been not documented in the binding file.
>>>
>>
>> You did not describe the case, but apparently this came with
>> 81311c03ab4d ("net: ethernet: stmmac: add management of clk_csr
>> property") which never brought the bindings change.
>>
>> Therefore the property was never part of bindings documentation and
>> bringing them via driver is not the correct process. It bypasses the
>> review and such bypass cannot be an argument to bring the property to
>> bindings. It's not how new properties can be added.
>>
>> Therefore I don't agree. Please make it a property matching bindings,
>> so
>> vendor prefix, no underscores in node names.
>>
>> Driver and DTS need updates.
>>
> We will rename the property 'clk_csr' as 'snps,clk-csr' and update DTS
> & driver to align with the new name in next versions patches.

Thanks!

Best regards,
Krzysztof