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drm/amdgpu/powerplay: fix mclk switch limit on polaris 

Update switch limit on newer polaris variants.  This may fix
flickering with high refresh rates with mclk switching enabled.

Reviewed-by: Junwei Zhang <Jerry.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher 2018-11-29 19:20:28 -05:00
parent 0cf5eb76e2
commit 7d98e1e7ee
1 changed files with 4 additions and 1 deletions
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5
drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c
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@ -2859,7 +2859,10 @@ static int smu7_vblank_too_short(struct pp_hwmgr *hwmgr,
case CHIP_POLARIS10:
case CHIP_POLARIS11:
case CHIP_POLARIS12:
switch_limit_us = data->is_memory_gddr5 ? 190 : 150;
if (hwmgr->is_kicker)
switch_limit_us = data->is_memory_gddr5 ? 450 : 150;
else
switch_limit_us = data->is_memory_gddr5 ? 190 : 150;
break;
case CHIP_VEGAM:
switch_limit_us = 30;