[<prev] [next>] [thread-next>] [day] [month] [year] [list]
Message-Id: <20210911131922.387964-1-marijn.suijten@somainline.org>
Date: Sat, 11 Sep 2021 15:19:19 +0200
From: Marijn Suijten <marijn.suijten@...ainline.org>
To: phone-devel@...r.kernel.org
Cc: ~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>,
Marijn Suijten <marijn.suijten@...ainline.org>,
Andy Gross <agross@...nel.org>,
Bjorn Andersson <bjorn.andersson@...aro.org>,
Michael Turquette <mturquette@...libre.com>,
Stephen Boyd <sboyd@...nel.org>,
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-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: [PATCH v3 0/2] Use "ref" clocks from firmware for DSI PLL VCO parent
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.
[1]: https://lore.kernel.org/linux-arm-msm/386db1a6-a1cd-3c7d-a88e-dc83f8a1be96@somainline.org/
Changes since v2:
- Added Stephen's a-b and Angelo's r-bs;
- Added .name fallback in msm8974's dsi_phy_28nm for a more graceful
transition period;
- Documented possible breakage in 1/2 if firmware isn't updated in
parallel with the kernel.
Changes since v1:
- Dropped "arm: dts: qcom: apq8064: Use 27MHz PXO clock as DSI PLL
reference" which has made its way into 5.15-fixes in advance of this
patchset landing in 5.16;
- Added Fixes: tags for commits that added missing "ref" clocks to DT
while this firmware clock was never used (until this patchset);
- Documented missing/wrong and later-added clocks (by aforementioned
patches) in patch 1/2 more clearly.
Marijn Suijten (2):
drm/msm/dsi: Use "ref" fw clock instead of global name for VCO parent
clk: qcom: gcc-sdm660: Remove transient global "xo" clock
drivers/clk/qcom/gcc-sdm660.c | 14 --------------
drivers/gpu/drm/msm/dsi/phy/dsi_phy_10nm.c | 4 +++-
drivers/gpu/drm/msm/dsi/phy/dsi_phy_14nm.c | 4 +++-
drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm.c | 4 +++-
drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm_8960.c | 4 +++-
drivers/gpu/drm/msm/dsi/phy/dsi_phy_7nm.c | 4 +++-
6 files changed, 15 insertions(+), 19 deletions(-)
--
2.33.0
Powered by blists - more mailing lists