Tx2 & fpga pcie

Hello
Firmware upgrade to JetPack_4.6.1,why PCI bus information cannot be queried?
lspci
nothing print in console

firmware version JetPack_4.2.1,i can get below informatin at least
lspci
00:01.0 PCI bridge: NVIDIA Corporation Device 10e5 (rev a1)

How to fix this problem?

You can try to share more detail about your board first… is it custom board or devkit?