[PATCH 1/2] drm/amdgpu/powerplay: fix mclk switch limit on polaris

[Alex Deucher]

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

Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
---
 drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c b/drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c
index 5dcd21d29dbf..1f12fc7ea7c9 100644
--- a/drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c
+++ b/drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c
@@ -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;
-- 
2.13.6