drm/amd/display: disable S/G display on DCN 2.1.0

Causes flickering or white screens in some configurations.
Disable it for now until we can fix the issue.

Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/2352
Cc: roman.li@amd.com
Cc: yifan1.zhang@amd.com
Reviewed-by: Yifan Zhang <yifan1.zhang@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 2096ad0..037af19 100644 (file)
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -1552,7 +1552,6 @@ static int amdgpu_dm_init(struct amdgpu_device *adev)
                            (adev->apu_flags & AMD_APU_IS_PICASSO))
                                init_data.flags.gpu_vm_support = true;
                        break;
-               case IP_VERSION(2, 1, 0):
                case IP_VERSION(3, 0, 1):
                case IP_VERSION(3, 1, 2):
                case IP_VERSION(3, 1, 3):