[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With new dmub f/w dmcu is superseded and should be disabled.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>
switch (adev->ip_versions[DCE_HWIP][0]) {
case IP_VERSION(2, 1, 0):
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;
case IP_VERSION(1, 0, 0):
case IP_VERSION(1, 0, 1):