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| author | Eric Yang <Eric.Yang2@amd.com> | 2021-06-23 15:48:02 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2021-07-21 13:39:25 -0400 |
| commit | 46ddb8965882fcff2d36d84ed12629435f3879c1 (patch) | |
| tree | 9e6f4d90203d37e632c4d7d52b9a81ad04838057 /drivers/usb/cdns3/cdns3-debug.h | |
| 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 <Rodrigo.Siqueira@amd.com>
Signed-off-by: Eric Yang <Eric.Yang2@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/usb/cdns3/cdns3-debug.h')
0 files changed, 0 insertions, 0 deletions