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[v2,0/2] arm64: dts: qcom: sm8[56]50: correct MDSS interconnects

Message ID 20241026-fix-sm8x50-mdp-icc-v2-0-fd8ddf755acc@linaro.org (mailing list archive)
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Series arm64: dts: qcom: sm8[56]50: correct MDSS interconnects | expand

Message

Dmitry Baryshkov Oct. 26, 2024, 5:59 p.m. UTC 
Both SM8550 and SM8650 misuse mdp1-mem interconnect path for the
LLCC->EBI path, while it should only be used for the MDP->EBI paths.

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 mdp1-mem paths and use MDP-EBI path directly.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
---
Changes in v2:
- Fixed type in 'degrading' in the commit messages (Konrad)
- Link to v1: https://lore.kernel.org/r/20241008-fix-sm8x50-mdp-icc-v1-0-77ffd361b8de@linaro.org

---
Dmitry Baryshkov (2):
      arm64: dts: qcom: sm8550: correct MDSS interconnects
      arm64: dts: qcom: sm8650: correct MDSS interconnects

 arch/arm64/boot/dts/qcom/sm8550.dtsi | 5 ++---
 arch/arm64/boot/dts/qcom/sm8650.dtsi | 5 +----
 2 files changed, 3 insertions(+), 7 deletions(-)
---
base-commit: 7f773fd61baa9b136faa5c4e6555aa64c758d07c
change-id: 20241006-fix-sm8x50-mdp-icc-138afd0e083a

Best regards,