On 25-09-18 21:29:01, Jun Nie wrote:
> The content of every half of screen is sent out via one interface in
> dual-DSI case. The content for every interface is blended by a LM
> pair in quad-pipe case, thus a LM pair should not blend any content
> that cross the half of screen in this case. Clip plane into pipes per
> left and right half screen ROI if topology is quad pipe case.
>
> The clipped rectangle on every half of screen is futher handled by two
> pipes if its width exceeds a limit for a single pipe.
>
> Signed-off-by: Jun Nie <[email protected]>
> Reviewed-by: Dmitry Baryshkov <[email protected]>
> Reviewed-by: Jessica Zhang <[email protected]>
At least on Hamoa based devices (CRD and xps13) I have been seeing on every
boot the following:
arm-smmu 15000000.iommu: Unhandled context fault: fsr=0x402, iova=0x00000000,
fsynr=0x3d0023, cbfrsynra=0x1c00, cb=13
arm-smmu 15000000.iommu: FSR = 00000402 [Format=2 TF], SID=0x1c00
arm-smmu 15000000.iommu: FSYNR0 = 003d0023 [S1CBNDX=61 PNU PLVL=3]
Also there are some artifacts on eDP (no DP connected) on the xps13 with
2880x1800
(LGD 134WT1) panel. Not on CRD though.
Reverting this commit fixes it:
5978864e34b6 ("drm/msm/dpu: support plane splitting in quad-pipe case")
Discussing this off-list with Dmitry and Konrad, the conclusion was that
both this plus following commit should be reverted for the time being:
d7ec9366b15c ("drm/msm/dpu: Enable quad-pipe for DSC and dual-DSI case")
