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drm/amd/pm: increase mclk switch threshold to 200 us

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To avoid underflow seen on Polaris10 with some 3440x1440
144Hz displays. As the threshold of 190 us cuts too close
to minVBlankTime of 192 us.

Signed-off-by: Evan Quan <evan.quan@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
This commit is contained in:
Evan Quan 2020-09-02 16:10:10 +08:00 committed by Alex Deucher
parent 39ec39d771
commit 83da6eea3a
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/amd/pm/powerplay/hwmgr/smu7_hwmgr.c
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@ -2883,7 +2883,7 @@ static int smu7_vblank_too_short(struct pp_hwmgr *hwmgr,
if (hwmgr->is_kicker)
switch_limit_us = data->is_memory_gddr5 ? 450 : 150;
else
switch_limit_us = data->is_memory_gddr5 ? 190 : 150;
switch_limit_us = data->is_memory_gddr5 ? 200 : 150;
break;
case CHIP_VEGAM:
switch_limit_us = 30;