Xavier AGX hangs when pcie device clocked from own clock

Hi!

FPGA was connected to Jetson Xavier AGX (JetPack 5.0.2) with help pcie (4x, gen.2) on custom board.

In case when controller in fpga is clocked from Jetson it’s ok. PCIe link is up.

But when it clocked from board’s clock generator - Jetson hangs while booting.

Do I have to use Jetsons pcie clock only or it possible to configure jetson to allow fpga use it’s own clock?