On 26.10.2024 7:59 PM, Dmitry Baryshkov wrote:
> SM8550 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: d7da51db5b81 ("arm64: dts: qcom: sm8550: add display hardware devices")
> Cc: stable@xxxxxxxxxx
> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
> ---
Feel free to use QCOM_ICC_TAG_ALWAYS, for both patches:
Reviewed-by: Konrad Dybcio <konrad.dybcio@xxxxxxxxxxxxxxxx>
Konrad
