From: Victor Lu <victorchengchi.lu@xxxxxxx> [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@xxxxxxx> Reviewed-by: Roman Li <Roman.Li@xxxxxxx> Acked-by: Qingqing Zhuo <qingqing.zhuo@xxxxxxx> --- drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hubbub.c | 6 +++--- 1 file 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 */ -- 2.17.1 _______________________________________________ amd-gfx mailing list amd-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/amd-gfx
