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drm/amd/display: Add Debug Log for MST and PCON

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Add log for MST/PCON specific use case:
1. If DP1.2 hub where gives reduced link bw and no dsc support.
2. If less than 4-lane configuration where gives reduced bw.
3. If FRL PCON enabled for asic.
4. Track MST sink count.

Reviewed-by: Hersen Wu <Hersenxs.Wu@amd.com>
Acked-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: Fangzhi Zuo <Jerry.Zuo@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Fangzhi Zuo
2023-01-16 16:29:26 -05:00
committed by Alex Deucher
parent 918d516643
commit e3834491b9
3 changed files with 26 additions and 1 deletions
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3
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
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@@ -1622,6 +1622,9 @@ static int amdgpu_dm_init(struct amdgpu_device *adev)
/* TODO: Remove after DP2 receiver gets proper support of Cable ID feature */
adev->dm.dc->debug.ignore_cable_id = true;
if (adev->dm.dc->caps.dp_hdmi21_pcon_support)
DRM_INFO("DP-HDMI FRL PCON supported\n");
r = dm_dmub_hw_init(adev);
if (r) {
DRM_ERROR("DMUB interface failed to initialize: status=%d\n", r);