PCIe is not detected, however after several reboots, it is

Autonomous Machines Jetson & Embedded Systems Jetson AGX Xavier
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1

Hi,

I’m developing a project with Jetson AGX Xavier DVK. Jetson serves as the PCIe root complex, and I have an Intel Arria10 FPGA-based customized card for our project, which serves as the end point. I took PCIe x4 from the M.2 Key M slot and PCIe x8 from the Jetson AGX Xavier’s X16 connector.

I’m not using any root complex power(3.3V,12V). I turned on the Jetson first, then our Arria10 board. At that time, the PCIe is not detecting. The PCie detects after a few restarts of the Jetson. I don’t restart the Arria10 board.

Not sure what could be the reason, Pl let me know if you have any idea.

2

Maybe need to some PCIE scan delay after boot the device.

3

Can you please elaborate on how to do that?

Can you pl tell me, Which all pins I need to check after the first boot?

4

Pl explain How to do it?

6

Try to manually bind and unbind your device under /sys/bus/pci and see if it will manually bring the device up.

7

Hi,

FW team is working on it. I will update once it is done.

9

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