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

[Mahesh Kumar]

Hi,
There was an issue with transition WM, it was getting enabled & causing 
fifo underrun.
I fixed the condition, After that tested kms_plane & not getting any 
underrun.
Please let me know if you see any other issue.

Regards,
-Mahesh

On Tuesday 13 September 2016 06:10 PM, Maarten Lankhorst wrote:
> 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