Revert "drm/amd/display: Disable virtual links"

This reverts commit b22c336268e477e3e8fc21e7d6b18fa8c4cd1f9a.

[WHY & HOW]
The writeback series cause a regression in thunderbolt display.

Signed-off-by: Alex Hung <alex.hung@amd.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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 4a43f26d51d7b003d8669182e3892a84dae23c68..1a6c682eb3114d41e5fce40cd98246ee07662342 100644 (file)
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -1676,7 +1676,7 @@ static int amdgpu_dm_init(struct amdgpu_device *adev)
 
        /* Enable DWB for tested platforms only */
        if (adev->ip_versions[DCE_HWIP][0] >= IP_VERSION(3, 0, 0))
-               init_data.num_virtual_links = 0;
+               init_data.num_virtual_links = 1;
 
        INIT_LIST_HEAD(&adev->dm.da_list);