Jetson AGX Xavier Industrial do not boot-up with PCIe device

I am connecting a FPGA based PCIe device to Xavier Industrial PCIe Tx/Rx with our own board.

I have confirmed the PCIe link-up with a FPGA debugger, but the Linux login screen does not start in the console.

It seems that the Linux kernel hangs.

When not connected to a PCIe device, it boots normally.

What probrems can yo think of?