Jetson AGX Orin – USB Type-C networking not working after manual build/flash

Robotics & Edge Computing Jetson Systems Jetson AGX Orin
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Hi,

I am working with a Jetson AGX Orin custom board based on the DevKit reference design.

After manually building and flashing with:

sudo ./tools/kernel_flash/l4t_initrd_flash.sh \
    --network usb0 \
    ${FLASH_BOARD} internal

the Jetson boots successfully, but I cannot ping 192.168.55.1 through USB Type-C. lsusb on the host also does not detect the Jetson.

I made some Pinmux changes 0001-Update-Tegra234-MB1-BCT-pinmux-and-GPIO-configs-for- .txt (27.5 KB). Could I have accidentally changed something that affects USB Type-C/device mode?

Interestingly, flashing the same board using NVIDIA SDK Manager works correctly, including USB Type-C networking.

What should I check to determine whether the issue is caused by Pinmux, device tree, kernel configuration, or my manual flash configuration?

Thanks!