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Message-ID: <4f205f0d-420d-8f51-ad26-0c2475c0decd@linaro.org>
Date:   Fri, 23 Sep 2022 20:15:59 +0200
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Subject: Re: [PATCH v5 4/4] net: stmmac: Update the name of property 'clk_csr'
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From:   Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
To:     AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@collabora.com>,
        Jianguo Zhang <jianguo.zhang@mediatek.com>,
        "David S . Miller" <davem@davemloft.net>,
        Rob Herring <robh+dt@kernel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>
Cc:     Eric Dumazet <edumazet@google.com>,
        Jakub Kicinski <kuba@kernel.org>,
        Paolo Abeni <pabeni@redhat.com>,
        Giuseppe Cavallaro <peppe.cavallaro@st.com>,
        Alexandre Torgue <alexandre.torgue@foss.st.com>,
        Jose Abreu <joabreu@synopsys.com>,
        Maxime Coquelin <mcoquelin.stm32@gmail.com>,
        Matthias Brugger <matthias.bgg@gmail.com>,
        Biao Huang <biao.huang@mediatek.com>, netdev@vger.kernel.org,
        devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
        linux-stm32@st-md-mailman.stormreply.com,
        linux-arm-kernel@lists.infradead.org,
        linux-mediatek@lists.infradead.org
References: <20220923052828.16581-1-jianguo.zhang@mediatek.com>
 <20220923052828.16581-5-jianguo.zhang@mediatek.com>
 <e0fa3ddf-575d-9e25-73d8-e0858782b73f@collabora.com>
 <ac24dc0f-0038-5068-3ce6-bbace55c7027@linaro.org>
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On 23/09/2022 20:14, Krzysztof Kozlowski wrote:
>> This is going to break MT2712e on old devicetrees.
>>
>> The right way of doing that is to check the return value of of_property_read_u32()
>> for "snps,clk-csr": if the property is not found, fall back to the old "clk_csr".
> 
> I must admit - I don't care. That's the effect when submitter bypasses
> DT bindings review (81311c03ab4d ("net: ethernet: stmmac: add management
> of clk_csr property")).
> 
> If anyone wants ABI, please document the properties.
> 
> If out-of-tree users complain, please upstream your DTS or do not use
> undocumented features...
> 

OTOH, as Angelo pointed out, handling old and new properties is quite
easy to achieve, so... :)

Best regards,
Krzysztof