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drm/amd/display: Fully switch to dmub for all dcn21 asics

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[Why]
On renoir usb-c port stops functioning on resume after f/w update.
New dmub firmware caused regression due to conflict with dmcu.
With new dmub f/w dmcu is superseded and should be disabled.

[How]
- Disable dmcu for all dcn21.

Check dmesg for dmub f/w version.
The old firmware (before regression):
[drm] DMUB hardware initialized: version=0x00000001
All other versions require this patch for renoir.

Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/1735
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Tested-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Roman Li <Roman.Li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Roman Li 2021-10-15 13:16:31 -04:00 committed by Alex Deucher
parent a3848df60b
commit 652de07add
1 changed files with 1 additions and 2 deletions
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3
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
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@ -1356,8 +1356,7 @@ static int amdgpu_dm_init(struct amdgpu_device *adev)
switch (adev->ip_versions[DCE_HWIP][0]) { switch (adev->ip_versions[DCE_HWIP][0]) {
case IP_VERSION(2, 1, 0): case IP_VERSION(2, 1, 0):
init_data.flags.gpu_vm_support = true; init_data.flags.gpu_vm_support = true;
if (ASICREV_IS_GREEN_SARDINE(adev->external_rev_id)) init_data.flags.disable_dmcu = true;
init_data.flags.disable_dmcu = true;
break; break;
case IP_VERSION(1, 0, 0): case IP_VERSION(1, 0, 0):
case IP_VERSION(1, 0, 1): case IP_VERSION(1, 0, 1):