linux-kernel - Re: [PATCH v2 2/2] clk: qcom: gcc-sdm660: Remove transient global "xo" clock

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Message-ID: <163055439497.405991.16122720273000010218@swboyd.mtv.corp.google.com>
Date:   Wed, 01 Sep 2021 20:46:34 -0700
From:   Stephen Boyd <sboyd@...nel.org>
To:     Marijn Suijten <marijn.suijten@...ainline.org>
Cc:     Bjorn Andersson <bjorn.andersson@...aro.org>,
        linux-arm-msm@...r.kernel.org, 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>,
        Pavel Dubrova <pashadubrova@...il.com>,
        Andy Gross <agross@...nel.org>,
        Michael Turquette <mturquette@...libre.com>,
        Rob Clark <robdclark@...il.com>, Sean Paul <sean@...rly.run>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        Abhinav Kumar <abhinavk@...eaurora.org>,
        Jonathan Marek <jonathan@...ek.ca>,
        Matthias Kaehlcke <mka@...omium.org>,
        Douglas Anderson <dianders@...omium.org>,
        linux-clk@...r.kernel.org, linux-kernel@...r.kernel.org,
        dri-devel@...ts.freedesktop.org, freedreno@...ts.freedesktop.org
Subject: Re: [PATCH v2 2/2] clk: qcom: gcc-sdm660: Remove transient global "xo" clock

Quoting Marijn Suijten (2021-09-01 01:57:15)
> On 2021-08-31 22:35:56, Stephen Boyd wrote:
> > Quoting Marijn Suijten (2021-08-30 11:24:45)
> > > The DSI PHY/PLL was relying on a global "xo" clock to be found, but the
> > > real clock is named "xo_board" in the DT.  The standard nowadays is to
> > > never use global clock names anymore but require the firmware (DT) to
> > > provide every clock binding explicitly with .fw_name.  The DSI PLLs have
> > > since been converted to this mechanism (specifically 14nm for SDM660)
> > > and this transient clock can now be removed.
> > > 
> > > This issue was originally discovered in:
> > > https://lore.kernel.org/linux-arm-msm/386db1a6-a1cd-3c7d-a88e-dc83f8a1be96@somainline.org/
> > > and prevented the removal of "xo" at that time.
> > > 
> > > Signed-off-by: Marijn Suijten <marijn.suijten@...ainline.org>
> > > ---
> > 
> > Presumably this wants to go with the first one.
> 
> What are you referring to with "the first one"?  This patch can only go
> in after patch 1/2 of this series, unless you are suggesting to squash
> it with Bjorns cleanup and making sure that lands after the fix in the
> DSI?

The first patch in this series.