linux-kernel - Re: [RFC PATCH] arm64: dts: qcom: Use plural

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Date:   Sat, 10 Dec 2022 18:05:31 +0100
From:   Marijn Suijten <marijn.suijten@...ainline.org>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Cc:     phone-devel@...r.kernel.org, ~postmarketos/upstreaming@...ts.sr.ht,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...ainline.org>,
        Konrad Dybcio <konrad.dybcio@...ainline.org>,
        Martin Botka <martin.botka@...ainline.org>,
        Jami Kettunen <jami.kettunen@...ainline.org>,
        Luca Weiss <luca@...tu.xyz>, Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...aro.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: [RFC PATCH] arm64: dts: qcom: Use plural _gpios node label for
 PMIC gpios

On 2022-12-10 11:50:51, Krzysztof Kozlowski wrote:
> On 09/12/2022 23:04, Marijn Suijten wrote:
> > The gpio node in PMIC dts'es define access to multiple GPIOs.  Most Qcom
> > PMICs were already using the plural _gpios label to point to this node,
> > but a few PMICs were left behind including the recently-pulled
> > pm(i)8950.
> > 
> > Rename it from *_gpio to *_gpios for pm6125, pm6150(l), pm8005,
> > pm(i)8950, and pm(i)8998.
> > 
> > Signed-off-by: Marijn Suijten <marijn.suijten@...ainline.org>
> > 
> > ---
> > 
> > This was brought up for discussion in [1] but hasn't seen any relevant
> > reply, unfortunately.
> 
> This is just a label, it does not matter. Why changing all exisitng
> files? I don't think it was a part of previous discussions...

I would've let it slide if it was corrected in the patch that was
reviewed, but since that didn't happen it wouldn't make sense to only
correct pmi8950 (and the other bindings submitted or co-authored by
myself, such as pm6125 and pm8950) for "consistency" - that wouldn't be
consistent at all.

To me (and supposedly, to other as well) it does matter.  People keep
copy-pasting these to to add a newer PMIC and sooner rather than later
we'll end up with both conventions.

Regardless, labels are already a mess all over the place, and unless we
can steer them with bindings or written conventions we're unlikely to
ever clean that up.

> To me it is unneeded churn.

Just like -state and -pins suffix, sometimes even the unnecessary
-pins-pins suffix?  To me that is the same kind of churn, and *it is
needed* to keep the bindings somewhat clean, consistent and digestible.
In this specific case it's not even that many changes, IMO.

That being said my limited hobby time is probably too valuable to be
spent on binding cleanup rather than fixes and feature enablement
elsewhere in the kernel.

- Marijn