How to connect Jetson Xavier NX to FPGA via PCIe and load FPGA program first after Linux startup, and then link it

Robotics & Edge Computing Jetson & Embedded Systems Jetson Xavier NX
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Jetson Xavier NX is connected to FPGA through PCIe bus. Now, I want Linux to start up first, and then load FPGA program through SPI. After loading FPGA program, I delay PCIe link. I try to add usleep or msleep in the tegra_pcie_cw_host_init function to delay the link work with FPGA. At this time, I will continue to scan and wait for the link in this function. May I ask what I should do to achieve my goal

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通过pci_rescan已解决

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