Message-ID: <0f5545ee-0d3f-96fc-99b4-9c757532a71d@linaro.org>
Date:   Mon, 13 Feb 2023 13:15:41 +0100
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Subject: Re: [PATCH 02/17] dt-bindings: arm: apple: apple,pmgr: Add t8112-pmgr
 compatible
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To:     Janne Grunau <j@jannau.net>
Cc:     Hector Martin <marcan@marcan.st>, Sven Peter <sven@svenpeter.dev>,
        Alyssa Rosenzweig <alyssa@rosenzweig.io>,
        Rob Herring <robh+dt@kernel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
        Mark Kettenis <kettenis@openbsd.org>, asahi@lists.linux.dev,
        linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org,
        linux-kernel@vger.kernel.org
References: <20230202-asahi-t8112-dt-v1-0-cb5442d1c229@jannau.net>
 <20230202-asahi-t8112-dt-v1-2-cb5442d1c229@jannau.net>
 <5ebf96d9-689a-f915-29b8-31af891fc63f@linaro.org>
 <20230213115741.GA17933@jannau.net>
From:   Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
In-Reply-To: <20230213115741.GA17933@jannau.net>
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Precedence: bulk

On 13/02/2023 12:57, Janne Grunau wrote:
> On 2023-02-13 12:10:36 +0100, Krzysztof Kozlowski wrote:
>> On 12/02/2023 16:41, Janne Grunau wrote:
>>> The block on Apple M2 SoCs is compatible with the existing driver so
>>> just add its per-SoC compatible.
>>>
>>> Signed-off-by: Janne Grunau <j@jannau.net>
>>>
>>> ---
>>> This trivial dt-bindings update should be merged through the asahi-soc
>>> tree to ensure validation of the Apple M2 (t8112) devicetrees in this
>>> series.
>>
>> No, the bindings go via subsystem. Just because you want to validate
>> something is not really a reason - you can validate on next. Don't
>> create special rules for Asahi... or rather - why Asahi is special than
>> everyone else?
> 
> We did that 2 or 3 times in the past without commnts that it is not 
> desired so I wasn't aware that this would be special handling.
> 
> Merging binding and devicetree updates together looks to me like the 
> most sensible option since dtbs validation is the only testable 
> dependecy of dt binding updates.
> Keeping them together ensures the dtbs validate without delaying 
> devicetree changes by one kernel release after the dt-bindings change 
> was merged.
> I suppose it works out most of the time if the merge request is sent 
> only if it validates in next. That still depends on the merge order in 
> the merge window but -rc1 should be fine.

BTW, your approach causes also bisectability with checkpatch on the
drivers or the delay of drivers... Therefore not much solved here.

Best regards,
Krzysztof