Hi Team,
We used PCIe Gen4 Redriver application for U.2 NVMe Device. and we found some strange status on the system.
Condition: Testing with Ubuntu Linux 20.04.2 / 18.04.5
a. Device does not install to the system, the system OS always showing PCIe Card Present.
b. The system seems normal, works fine without any issue.
We confuse :( . why the empty slot will showing the present device message.
So just try to load the default setting use SMBus reg 0x00 [channel reset control]. Amazing, the issue its disappear.
What register needs to set for U.2 NVMe Devie? Seems the re-driver will not turn off the channel automatically.
Another question, the issue related to hotplug function?
