From: Alex Hung <alex.hung@amd.com>
Date: Wed, 11 Oct 2023 19:23:05 +0000 (-0600)
Subject: Revert "drm/amd/display: Disable virtual links"
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=7d3dc50e241d8d198e7f1ed9ae8195121fe8fc82;p=linux.git

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 4a43f26d51d7b..1a6c682eb3114 100644
--- 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);