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drm/amd/display: Change pstate expected timeout warning to 180us on linux

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[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>
This commit is contained in:
Victor Lu 2020-11-24 10:06:04 -05:00 committed by Alex Deucher
parent 86b6037f76
commit 20172ff3f0
1 changed files with 3 additions and 3 deletions

6
drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hubbub.c
View File

@ -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 */