linux-kernel - Re: [PATCH RFC 1/4] dt-bindings: clock: rename mt7986-clk.h to mediatek,mt7986-clk.h

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Date:   Fri, 24 Feb 2023 22:40:05 +0100
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Daniel Golle <daniel@...rotopia.org>
Cc:     linux-clk@...r.kernel.org, linux-mediatek@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org,
        Matthias Brugger <matthias.bgg@...il.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Chen-Yu Tsai <wenst@...omium.org>,
        Edward-JW Yang <edward-jw.yang@...iatek.com>,
        Johnson Wang <johnson.wang@...iatek.com>,
        Chun-Jie Chen <chun-jie.chen@...iatek.com>,
        Miles Chen <miles.chen@...iatek.com>,
        Sam Shih <sam.shih@...iatek.com>
Subject: Re: [PATCH RFC 1/4] dt-bindings: clock: rename mt7986-clk.h to
 mediatek,mt7986-clk.h

On 24/02/2023 22:06, Daniel Golle wrote:
> On Thu, Feb 23, 2023 at 11:18:37AM +0100, Krzysztof Kozlowski wrote:
>> On 22/02/2023 19:09, Daniel Golle wrote:
>>> Rename dt-bindings header file mt7986-clk.h to mediatek,mt7986-clk.h,
>>> propagate this change also to mt7986a.dtsi which is the only user.
>>>
>>> Signed-off-by: Daniel Golle <daniel@...rotopia.org>
>>> ---
>>>  arch/arm64/boot/dts/mediatek/mt7986a.dtsi                       | 2 +-
>>>  drivers/clk/mediatek/clk-mt7986-infracfg.c                      | 2 +-
>>>  drivers/clk/mediatek/clk-mt7986-topckgen.c                      | 2 +-
>>>  .../dt-bindings/clock/{mt7986-clk.h => mediatek,mt7986-clk.h}   | 0
>>
>> You cannot have bindings and DTS and drivers mixed together. Which
>> points to fact - you cannot make such change... Also your commit msg
>> does not justify "why" you are doing it.
> 
> The reason is simply consistency with most other SoCs.
> 
> So to make such a change possible, I should do it in three steps, right?
> Step 1: dt-bindings: copy mt7986-clk.h to mediatek,mt7986-clk.h
> Step 2: changes in drivers
> Step 3: dt-bindings: remove mt7986-clk.h
> 
> Would this change be acceptable if carried out in 3 commits?

For new code - it would have to be in three commits. For existing code,
how you are going to achieve it with keeping full bisectability?
Remember that each commits goes to different branch and/or tree! It's
probably doable within two Linux releases with some header wrappers...
but is it worth the effort just for "consistency"?

> And using the same strategy also the other changes suggested in the
> series?

All of them have the same bisectability problems...

Best regards,
Krzysztof