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| author |   Alvin Lee <alvin.lee2@amd.com> | 2023-12-06 14:52:32 -0500 |
|---|---|---|
| committer |   Alex Deucher <alexander.deucher@amd.com> | 2023-12-13 15:09:54 -0500 |
| commit | 9a902a9073c287353e25913c0761bfed49d75a88 (patch) | |
| tree | 85db1199c793b96bfae273b451542b30b940e57a /drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h | |
| parent | drm/amd/display: For prefetch mode > 0, extend prefetch if possible (diff) | |
| download | linux-rng-9a902a9073c287353e25913c0761bfed49d75a88.tar.xz linux-rng-9a902a9073c287353e25913c0761bfed49d75a88.zip | |
drm/amd/display: Force p-state disallow if leaving no plane config
[Description]
- When we're in a no plane config, DCN is always asserting
P-State allow
- This creates a scenario where the P-State blackout can start
just as VUPDATE takes place and transitions the DCN config to
a one where one or more HUBP's are active which can result in
underflow
- To fix this issue, force p-state disallow and unforce after
the transition from no planes case -> one or more planes active
Reviewed-by: Samson Tam <samson.tam@amd.com>
Acked-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Alvin Lee <alvin.lee2@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h')
0 files changed, 0 insertions, 0 deletions