Comment # 8 on bug 110886 from Andrey Grodzovsky

(In reply to Kai-Heng Feng from comment #6)
> Created attachment 145044 [details]
> failed log when iommu is disabled.

What was the failur ewith IOMMU disabled ? Is it the same as with IOMMU enabled
?
In the log I only see PSP errors on resume. Can you confirm that the only
failure/error you observed in the log in that use case ?

Can you please provide your FW versions by 
cat /sys/kernel/debug/dri/0/amdgpu_firmware_info