How to set up PCIe-5 on Jetson AGX Xavier NVHS pins

Robotics & Edge Computing Jetson & Embedded Systems Jetson AGX Xavier
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1

Hi,
In our HW we are using NVHS pads for connecting a LAN7430 device to the processor.
The interface contains following signals;
pad F25 PEX_CLK5_N
pad F24 PEX_CLK5_P
pad D25 PEX_RX0_N
pad D24 PEX_RX0_P
pad H25 PEX_TX0_n
pad H24 PEX_TX0_P
pad A8 PEX_WAKE_N
pad H10 PEX_L5_RST_N
pad C8 PEX_L5_CLKREQ_N

As I am having issues getting the LAN device detected (it is detected ok on other PCIe ports), I am wondering if the pin muxing would need to be changed.
As the four TX0 and RX0 signals are using NVHS pads, how can I modify the pin configuration/muxing for these pads?
Is it possible to use these pads for PCIe purposes, i.e. connecting the processor to a LAN7430 device?

Thanks,
Jari

3

Nothing needs to be changed if using default BSP as C5 was already enabled in default BSP.

4

Hi,

Thanks WayneWWW for your message and confirmation on C5 functionality!
We need to continue debugging our HW/SW in order to find out why C5 is not working.

Best regards,
Jari

6

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