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

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>

diff --git a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/smu7_hwmgr.c b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/smu7_hwmgr.c
index 3bf8be4d107beba7a8ddb9ebcad231452e30283b..1e8919b0acdb262c714f4229be9855c64bbf436c 100644 (file)
--- a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/smu7_hwmgr.c
+++ b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/smu7_hwmgr.c
@@ -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;