linux-kernel - Re: [PATCH v3 0/2] Use "ref" clocks from firmware for DSI PLL VCO parent

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Message-ID: <20211214194656.mayiy4xhcshjluwf@SoMainline.org>
Date:   Tue, 14 Dec 2021 20:46:56 +0100
From:   Marijn Suijten <marijn.suijten@...ainline.org>
To:     Stephen Boyd <sboyd@...nel.org>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        Rob Clark <robdclark@...omium.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>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.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>,
        Abhinav Kumar <abhinavk@...eaurora.org>,
        Jonathan Marek <jonathan@...ek.ca>,
        Matthias Kaehlcke <mka@...omium.org>,
        Douglas Anderson <dianders@...omium.org>,
        linux-arm-msm@...r.kernel.org, linux-clk@...r.kernel.org,
        linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        freedreno@...ts.freedesktop.org
Subject: Re: [PATCH v3 0/2] Use "ref" clocks from firmware for DSI PLL VCO
 parent

Hi all,

On 2021-09-18 16:40:38, Marijn Suijten wrote:
> On 2021-09-14 14:44:01, Stephen Boyd wrote:
> > Quoting Marijn Suijten (2021-09-11 06:19:19)
> > > All DSI PHY/PLL drivers were referencing their VCO parent clock by a
> > > global name, most of which don't exist or have been renamed.  These
> > > clock drivers seem to function fine without that except the 14nm driver
> > > for sdm6xx [1].
> > > 
> > > At the same time all DTs provide a "ref" clock as per the requirements
> > > of dsi-phy-common.yaml, but the clock is never used.  This patchset puts
> > > that clock to use without relying on a global clock name, so that all
> > > dependencies are explicitly defined in DT (the firmware) in the end.
> > 
> > I can take this through clk tree if it helps avoid conflicts. There are
> > some other patches to sdm660.c in the clk tree already.
> 
> Might be useful to maintain proper ordering of these dependent patches
> but it's up to Dmitry and Rob to decide, whom I'm sending this mail
> directly to so that they can chime in.

Dependent patch [3] landed in 5.15 and [2] made it into 5.16 rc's - is
it time to pick this series up and if so through what tree?

Repeating the links from patch 1/2:
[2]: https://lore.kernel.org/linux-arm-msm/20210830175739.143401-1-marijn.suijten@somainline.org/
[3]: https://lore.kernel.org/linux-arm-msm/20210829203027.276143-2-marijn.suijten@somainline.org/

Thanks!

- marijn