linux-kernel - Re: [PATCH 00/14] Control Quad SPI pinctrl better on Qualcomm Chromebooks

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Message-ID: <CAD=FV=W6QKfQxGcSrQdgp4VHYxfk7aYZOkYx4ve7QSpoZ-LM=A@mail.gmail.com>
Date:   Mon, 27 Mar 2023 14:51:04 -0700
From:   Doug Anderson <dianders@...omium.org>
To:     Linus Walleij <linus.walleij@...aro.org>
Cc:     Bjorn Andersson <andersson@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Mark Brown <broonie@...nel.org>,
        Matthias Kaehlcke <mka@...omium.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        linux-gpio@...r.kernel.org, Stephen Boyd <swboyd@...omium.org>,
        devicetree@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        linux-spi@...r.kernel.org, Andy Gross <agross@...nel.org>,
        Rajendra Nayak <rnayak@...eaurora.org>,
        Rajesh Patil <rajpat@...eaurora.org>,
        Roja Rani Yarubandi <rojay@...eaurora.org>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 00/14] Control Quad SPI pinctrl better on Qualcomm Chromebooks

Hi,

On Mon, Mar 27, 2023 at 2:45 PM Linus Walleij <linus.walleij@...aro.org> wrote:
>
> On Thu, Mar 23, 2023 at 6:31 PM Douglas Anderson <dianders@...omium.org> wrote:
>
> > The main goal of this series is to do a better job of cI can apply ontroling the
> > pins related to the "Quad SPI" IP block on Qualcomm Chromebooks. This
> > is essentially 'v2' of my previous attempt in the patch ("arm64: dts:
> > qcom: sc7180: Fix trogdor qspi pull direction") [1] but since it's
> > spiraled out a bit and there are no patches that are exactly the same
> > I've reset to v1.
> >
> > The early patches in this series are just no-op cleanup patches that
> > can be applied. They're not terribly critical but since they are
> > "Fixes" I've listed them first.
> >
> > The next patch in the series is a very simple and (hopefully)
> > non-controversial SPI patch. It can be applied independently if
> > anything else.
> >
> > Next, we have a bunch of pinctrl patches (including the device tree
> > bindings related to them). I dunno what folks are going to think about
> > these. If everyone hates them, we can drop them and just change the
> > later patches in the series to use "input-enable" instead of
> > "output-disable". It feels ugly to me, but it maybe less upheval.
> >
> > Next I removed the now-deprecated "input-enable" property from all
> > Chromebooks. None of them were necessary.
> >
> > Finally, I did what I really wanted to do in the first place: attempt
> > to cleanup the pinctrl states of the Quad SPI. These patches have a
> > hard requirement on the pinctrl change.
>
> This looks good to me (TM)
>
> Do you have a merge plan?
> I can queue the pinctrl patch into the pinctrl tree, and
> the pinctrl binding patches.
>
> Will you take the rest to the SPI and SoC tree?
>
> Acked-by: Linus Walleij <linus.walleij@...aro.org>

My thoughts:

1. Mark could land the SPI patch at any time, assuming he's OK with
it. It can land totally independently.

2. First 7 dts patches could land in the Qualcomm tree. There are no
dependencies on these ones other than the commit message of some of
the later dts patches talking about the pinctrl patches.

...then...


Option A:

3. You land the pinctrl and binding patches in an immutable branch and
merge into pinctrl.

4. Bjorn merges the immutable branch into the Qulacomm tree and places
the last 3 dts patches atop.


Option B:

3. You Ack the pinctrl patches and Bjorn lands them all, plus the last
3 dts patches.


Option C:

3. You land the pinctrl patches, then we want a few months and land
the last 3 dts patches.