[PATCH 11/22] drm/amd/display: enable phy-ssc reduction by default
Zaeem Mohamed
zaeem.mohamed at amd.com
Tue Apr 15 14:58:57 UTC 2025
From: Roman Li <Roman.Li at amd.com>
[Why]
Reduction of phy-ssc is needed to support DP2 high pixel clock on dcn35x/36.
There's a special flag to enable it in dmub hw params.
[How]
Set hbr3_phy_ssc to true for dcn35, dcn351 and dcn36.
Reviewed-by: Charlene Liu <charlene.liu at amd.com>
Signed-off-by: Roman Li <Roman.Li at amd.com>
Signed-off-by: Zaeem Mohamed <zaeem.mohamed at amd.com>
---
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index 46e0de6cc277..236e73115812 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -1330,6 +1330,7 @@ static int dm_dmub_hw_init(struct amdgpu_device *adev)
case IP_VERSION(3, 5, 1):
case IP_VERSION(3, 6, 0):
hw_params.ips_sequential_ono = adev->external_rev_id > 0x10;
+ hw_params.lower_hbr3_phy_ssc = true;
break;
default:
break;
--
2.34.1
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