Commit 9fa33cbc authored by Dmitry Baryshkov's avatar Dmitry Baryshkov Committed by Bjorn Andersson
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arm64: dts: qcom: sm8650: correct MDSS interconnects



SM8650 lists two interconnects for the display subsystem, mdp0-mem
(between MDP and LLCC) and mdp1-mem (between LLCC and EBI, memory).
The second interconnect is a misuse. mdpN-mem paths should be used for
several outboud MDP interconnects rather than the path between LLCC and
memory. This kind of misuse can result in bandwidth underflows, possibly
degrading picture quality as the required memory bandwidth is divided
between all mdpN-mem paths (and LLCC-EBI should not be a part of such
division).

Drop the second path and use direct MDP-EBI path for mdp0-mem until we
support separate MDP-LLCC and LLCC-EBI paths.

Fixes: 10e02467 ("arm64: dts: qcom: sm8650: add interconnect dependent device nodes")
Cc: stable@kernel.org
Signed-off-by: default avatarDmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/20241026-fix-sm8x50-mdp-icc-v2-2-fd8ddf755acc@linaro.org


Signed-off-by: default avatarBjorn Andersson <andersson@kernel.org>
parent b8591df4
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