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| author | Eric Yang <Eric.Yang2@amd.com> | 2021-07-09 12:57:50 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2021-07-23 10:07:58 -0400 |
| commit | a4d5df1787cc143b513b9f472ead1ff5eaa550e1 (patch) | |
| tree | 12b8b8eba21ada474cdd94a00f5b2fdbb61a7b08 /drivers/usb/cdns3/cdns3-plat.c | |
| parent | ba16b22d42283b6393db123ce0ff6e17bb0d01eb (diff) | |
drm/amd/display: add workaround for riommu invalidation request hang
[Why]
When an riommu invalidation request come at the same time as a pipe is
disabled there can be a case where DCN cannot ACK the request if only
one VMID is setup in the inuse list.
[How]
Setup a second unused VMID will work around the issue.
Reviewed-by: Jun Lei <jun.lei@amd.com>
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-plat.c')
0 files changed, 0 insertions, 0 deletions