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| author | Victor Lu <victorchengchi.lu@amd.com> | 2020-11-24 10:06:04 -0500 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2020-12-15 11:33:22 -0500 |
| commit | 20172ff3f0b4eddcdd1cf4ca31a7d922e9b4c662 (patch) | |
| tree | a794df9109528ebf05b8f3b55d500408be89ca45 | |
| parent | 86b6037f7608f9b726281252aa1b2a55dd696486 (diff) | |
| download | lwn-20172ff3f0b4eddcdd1cf4ca31a7d922e9b4c662.tar.gz lwn-20172ff3f0b4eddcdd1cf4ca31a7d922e9b4c662.zip | |
drm/amd/display: Change pstate expected timeout warning to 180us on linux
[Why]
There is a warning that triggers when pstate takes too long.
Pstate can take up to ~200us on Linux without hanging but
it is currently set to 40us.
[How]
Change the timeout for the warning to be 180us on Linux.
Signed-off-by: Victor Lu <victorchengchi.lu@amd.com>
Reviewed-by: Roman Li <Roman.Li@amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hubbub.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hubbub.c b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hubbub.c index 75637c291e75..6f42d10dd772 100644 --- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hubbub.c +++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hubbub.c @@ -124,11 +124,11 @@ bool hubbub1_verify_allow_pstate_change_high( * still not asserted, we are probably stuck and going to hang * * TODO: Figure out why it takes ~100us on linux - * pstate takes around ~100us on linux. Unknown currently as to - * why it takes that long on linux + * pstate takes around ~100us (up to 200us) on linux. Unknown currently + * as to why it takes that long on linux */ const unsigned int pstate_wait_timeout_us = 200; - const unsigned int pstate_wait_expected_timeout_us = 40; + const unsigned int pstate_wait_expected_timeout_us = 180; static unsigned int max_sampled_pstate_wait_us; /* data collection */ static bool forced_pstate_allow; /* help with revert wa */ |