How to use PCIE C4 root port?

The AGX carrier card is designed by us. We connected the PCIE (C4) controller to the PCIE to USB device. The PCIE data width is X1 (UPHY_TX8_P/N,UPHY_RX8_P/N), and the mode is ROOT, but the following error occurred. How should it be modified.

Test that the PEX_L4_RST_N pin is always low,and AGX has no clock output,and CLK_REQ_N is always low.

The following picture shows the location of our modification (see the attachment for the entire file)

tegra194-p2888-0000-a00.dtsi (6.1 KB)

The printing information is as follows:

dmesg.txt (69.4 KB)

I’m closing this topic due to there is no update from you for a period, assuming this issue was resolved.
If still need the support, please open a new topic. Thanks

What is the exact platform you are using here? You filed this topic in Orin AGX forum.

But your dts is AGX Xavier platform.