[PATCH 0/1] Add workaround for VCN 4.0.5 timeouts

[Mario Limonciello]

There is an issue reported on platforms with VCN 4.0.5 that some jobs
are timing out.  This leads to a full GPU reset.  That full GPU reset
exposed a number of problems in DCN that have since been fixed, but
still the GPU reset means a black screen for ~500ms while the GPU resets.

However the issue with VCN in this case doesn't require a full GPU reset
to recover, just resetting VCN is enough.

For a workaround while the VCN issue is still being root caused lessen
the impact of VCN timeouts use the per-ring reset functionality to reset
just VCN.

Mario Limonciello (1):
  drm/amd: Add per-ring reset for vcn v4.0.5 use

 drivers/gpu/drm/amd/amdgpu/vcn_v4_0_5.c | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

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2.49.0