PCIe RX lane reversal

Robotics & Edge Computing Jetson Systems Jetson AGX Orin
1

I made a mistake in my design and reversed the RX lanes of pcie C5 while keeping the TX lanes in the normal configuration. (Orin PER3_P is connected to slot PER0_P) Does the PCIe controller support lane reversal on only the RX side of the link? Is there something I need to do to get it to work? I currently have a NVME SSD plugged in and it is not detecting it.

3

It is not supported.

5

I did eventually make this work. I had to modify the pcie-tegra194 driver to set RX_LANE_FLIP_EN in the APPL_CTRL register.