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| author |   Qingqing Zhuo <qingqing.zhuo@amd.com> | 2021-08-25 12:29:28 -0400 |
|---|---|---|
| committer |   Alex Deucher <alexander.deucher@amd.com> | 2021-09-23 15:17:30 -0400 |
| commit | 1bd3bc745e7f02f471fbf6e3f5f2ac5d788c9f39 (patch) | |
| tree | 88325c2dddf290fd58778be4f78647f20918d36f /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | drm/amd/display: Reduce stack size for dml21_ModeSupportAndSystemConfigurationFull (diff) | |
| download | linux-dev-1bd3bc745e7f02f471fbf6e3f5f2ac5d788c9f39.tar.xz linux-dev-1bd3bc745e7f02f471fbf6e3f5f2ac5d788c9f39.zip | |
drm/amd/display: Extend w/a for hard hang on HPD to dcn20
[Why]
HPD disable and enable sequences are not mutually exclusive on Linux.
For HPDs that spans under 1s (i.e. HPD low = 1s), part of the disable
sequence (specifically, a request to SMU to lower refclk) could come
right before the call to PHY enablement, causing DMUB to access an
irresponsive PHY and thus a hard hang on the system.
[How]
Disable 48mhz refclk off when there is any HPD status in connected state
for dcn20.
Reviewed-by: Hersen Wu <hersenxs.wu@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions