When i insert SSD, HDMI will no display

hello, nvidia

BSP version:R35.4.1

Jetpack Version:5.1.2

I’m using a custom board.

When I plug in the SSD, the port of the pcie is C5, I will have the problem of no HDMI output, but when I don’t plug in this ssd, my hdmi interface works perfectly, and its device tree is generated using the dcb_tool tool.

I would like to share with you some of the phenomena I have seen so far,

1. I found that when HDMI works abnormally (that is, when an SSD is inserted), the voltage value of its hot-swap interface (PM.00) is wrong, and its value is always 0.8v.


2. When I modify PCIE to be loaded in the form of ko, its hdmi works fine, but when I go to sleep, it cannot be woken up.


3. There are no errors reported in the serial port or dmesg. This is why I did not share the dmesg log with you.