Nano cannot mount PCIe SSD as roofts

Hello, everyone.

I used a PCIe SSD as roofts so I can get more disk space. And the performance is probably as below:

1. About 30% probability, login EMMC successfully, and SSD was auto found and mount. This proves the PCIe driver and SSD device works.


2. About 20% probability, boot failed and stuck in the ‘NVIDIA’ white logo.


3. 40% probability, report PCIe error as below when booting:
   
   

   
   微信图片_202212261024011706×1280 336 KB
   
   
   


4. very rarely, I can mount SSD as rootfs successfully, after many error reports as 3.

The 4 situation above, can be reached by hot or cold reboot.

My hardware: I used jetson NX before, and remain the same Interface design for nano. And NX can works normally in my board while Nano can’t.

Firmware: nano SDK version is 32.5.1, NX version is 32.4.3, are both default firmware.

So, what’s the problem might be? I think NX and Nano, they have the same hardware interfaces.

Everything can be supplied, circuit diagram, logs etc. Debug serrial port didn’t layout.