[Intel-gfx] [PATCH v4] drm/i915/skl: New ddb allocation algorithm

Maarten Lankhorst maarten.lankhorst at linux.intel.com
Tue Sep 13 12:40:13 UTC 2016


Op 13-09-16 om 14:15 schreef Kumar, Mahesh:
> From: Mahesh Kumar <mahesh1.kumar at intel.com>
>
> This patch implements new DDB allocation algorithm as per HW team
> suggestion. This algo takecare of scenario where we allocate less DDB
> for the planes with lower relative pixel rate, but they require more DDB
> to work.
> It also takes care of enabling same watermark level for each
> plane, for efficient power saving.
>
> Changes since v1:
>  - Rebase on top of Paulo's patch series
>
> Changes since v2:
>  - Fix the for loop condition to enable WM
>
> Signed-off-by: Mahesh Kumar <mahesh1.kumar at intel.com>
I'm still getting underrun issues when running the entire patch series against kms_atomic_transition and kms_plane.
Can you confirm?

~Maarten


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