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| author | Monk Liu <[email protected]> | 2019-09-24 08:08:00 +0000 |
|---|---|---|
| committer | Alex Deucher <[email protected]> | 2019-10-03 14:11:01 +0000 |
| commit | e7da754b00ee40af55e522f9dc478d8ed3a3ad3d (patch) | |
| tree | 1dc570863d12159de86f36c1ccfbf8fcb5731319 /drivers/gpu/drm/amd/amdgpu/amdgpu_ras.h | |
| parent | drm/amdgpu: remove gfx9 NGG (diff) | |
| download | kernel-e7da754b00ee40af55e522f9dc478d8ed3a3ad3d.tar.gz kernel-e7da754b00ee40af55e522f9dc478d8ed3a3ad3d.zip | |
drm/amdgpu: fix an UMC hw arbitrator bug(v3)
issue:
the UMC6 h/w bug is that when MCLK is doing the switch
in the middle of a page access being preempted by high
priority client (e.g. DISPLAY) then UMC and the mclk switch
would stuck there due to deadlock
how:
fixed by disabling auto PreChg for UMC to avoid high
priority client preempting other client's access on
the same page, thus the deadlock could be avoided
v2:
put the patch in callback of UMC6
v3:
rename the callback to "init_registers"
Signed-off-by: Monk Liu <[email protected]>
Reviewed-by: Alex Deucher <[email protected]>
Reviewed-by: Hawking Zhang <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_ras.h')
0 files changed, 0 insertions, 0 deletions