diff options
| author | Eric Yang <[email protected]> | 2021-06-23 15:48:02 -0400 |
|---|---|---|
| committer | Alex Deucher <[email protected]> | 2021-07-21 13:39:25 -0400 |
| commit | 46ddb8965882fcff2d36d84ed12629435f3879c1 (patch) | |
| tree | 9e6f4d90203d37e632c4d7d52b9a81ad04838057 /drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | |
| parent | 98e95e4f7996a60ee44ca6d8ab7f280e4bf7d618 (diff) | |
drm/amd/display: implement workaround for riommu related hang
[Why]
During S4/S5/reboot, sometimes riommu invalidation request arrive too
early, DCN may be unable to respond to the invalidation request
resulting in pstate hang.
[How]
VBIOS will force allow pstate for riommu invalidation and driver will
clear it after powering down display pipes.
Acked-by: Rodrigo Siqueira <[email protected]>
Signed-off-by: Eric Yang <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>
Diffstat (limited to 'drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c')
0 files changed, 0 insertions, 0 deletions