How to check the device status of PICE?

How to check the device on PEX2? We have used the command ‘lspci’ but it has not responded.
We are using r28 BSP.

Normally, if lspci does not show anything, I would expect the signal quality is too degraded. I couldn’t tell you how to get any verbose debug message, but I too would be curious if there a lower level way to see what PCI is doing.

I’ll check it, thank you very much!