From: Val Packett <val@packett.cool>
To: petr.hodina@protonmail.com,
Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>,
Rob Clark <robin.clark@oss.qualcomm.com>,
Dmitry Baryshkov <lumag@kernel.org>,
Abhinav Kumar <abhinav.kumar@linux.dev>,
Jessica Zhang <jesszhan0024@gmail.com>,
Sean Paul <sean@poorly.run>,
Marijn Suijten <marijn.suijten@somainline.org>,
David Airlie <airlied@gmail.com>, Simona Vetter <simona@ffwll.ch>,
Bjorn Andersson <andersson@kernel.org>,
Michael Turquette <mturquette@baylibre.com>,
Stephen Boyd <sboyd@kernel.org>, David Heidelberg <david@ixit.cz>,
Taniya Das <quic_tdas@quicinc.com>
Cc: linux-arm-msm@vger.kernel.org, dri-devel@lists.freedesktop.org,
freedreno@lists.freedesktop.org, linux-kernel@vger.kernel.org,
linux-clk@vger.kernel.org, phone-devel@vger.kernel.org
Subject: Re: [PATCH v2] clk: qcom: dispcc-sdm845: Enable parents for pixel clocks
Date: Thu, 8 Jan 2026 20:00:13 -0300 [thread overview]
Message-ID: <702e4696-5ff6-4c72-bce4-1a9a8ee1ba18@packett.cool> (raw)
In-Reply-To: <20260107-stability-discussion-v2-1-ef7717b435ff@protonmail.com>
On 1/7/26 8:44 AM, Petr Hodina via B4 Relay wrote:
> From: Petr Hodina <petr.hodina@protonmail.com>
>
> Add CLK_OPS_PARENT_ENABLE to MDSS pixel clock sources to ensure parent
> clocks are enabled during clock operations, preventing potential
> stability issues during display configuration.
>
> Fixes: 81351776c9fb ("clk: qcom: Add display clock controller driver for SDM845")
> Signed-off-by: Petr Hodina <petr.hodina@protonmail.com>
> ---
> We are currently running the latest linux-next snapshots (next-202511*
> and next-202512*) and have encountered random freezes and crashes on the
> Pixel 3, as well as crash dumps on the OnePlus 6 and 6T.
>
> This commit fixes the stability issue. I've checked other SDM dispcc
> files and they also contain this configuration.
Hm, we don't have this flag set in dispcc-x1e80100.c either!
The only random freeze we have on that platform seems related to PCIe
ASPM with NVMe drives, but during display configuration.. *extremely*
rarely, but the eDP display output can get stuck on a blue screen. Many
run with clk_ignore_unused for the early uefi framebuffer though.
~val
next prev parent reply other threads:[~2026-01-08 23:00 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-01-07 11:44 Petr Hodina via B4 Relay
2026-01-07 11:52 ` David Heidelberg
2026-01-07 12:11 ` Dmitry Baryshkov
2026-01-07 16:26 ` Taniya Das
2026-01-07 18:38 ` Bjorn Andersson
2026-01-08 23:00 ` Val Packett [this message]
2026-01-13 14:50 ` Konrad Dybcio
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