linux-kernel - Re: [PATCH 2/6] arm64: dts: qcom: sdm845: move WCD9340 codec to separate file

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Message-ID: <3ebaf19a-9d1a-be8d-1f99-f8cb6faa35dd@linaro.org>
Date:   Mon, 16 Jan 2023 09:56:31 +0100
From:   Konrad Dybcio <konrad.dybcio@...aro.org>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
Cc:     Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/6] arm64: dts: qcom: sdm845: move WCD9340 codec to
 separate file



On 16.01.2023 08:58, Krzysztof Kozlowski wrote:
> On 16/01/2023 06:55, Dmitry Baryshkov wrote:
>> On Sun, 15 Jan 2023 at 13:21, Krzysztof Kozlowski
>> <krzysztof.kozlowski@...aro.org> wrote:
>>>
>>> On 14/01/2023 21:33, Konrad Dybcio wrote:
>>>>
>>>>
>>>> On 13.01.2023 17:22, Krzysztof Kozlowski wrote:
>>>>> WCD9340 codec node is not a property of the SoC, but board.  Move it to
>>>>> separate file and include it in the specific boards.  On all others,
>>>>> keep the Slimbus node disabled as it is empty.
>>>>>
>>>>> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
>>>>> ---
>>>> Generally this should be SoC-independent, for example some newer
>>>> MSM8998 devices shipped with the 9340 codec that most 845 devices
>>>> used, but earlier ones used the WCD9335 found on MSM8996
>>>
>>> OK, but I don't get if you expect me to change anything?
>>
>> Maybe it might make sense to name new include file just 'wcd9340.dtsi'
>> rather than 'sdm845-somthing.dtsi'? Same applies to the wcd9335 codec
>> found in msm8996.dtsi, if you are going to extract it too.
> 
> Ah, then I vote against, because it is not only codec, but also it's bus
> attachment. It cannot be re-used on other devices.
> 
> Same approach with sc7280 audios - not re-usable for other SoCs.
Riight.. and interrupts and so on, let's keep it SoC-bound.

Konrad
> 
> Best regards,
> Krzysztof
>