Display Port with own Carrier Board not working

Autonomous Machines Jetson & Embedded Systems Jetson AGX Xavier
1

Hi
We have an own carrier board for the Jetson AGX Xavier where we use a Display Port instead of HDMI. When we used a Xavier Modul from the developer kit and mounted it on our carrier board, the display port was working right away. But after installing the newest OS with JetPack 4.2, it stopped working. Do you have a Version where it works (like the one which was installed on the developer kit)? Or do you have a configuration for us which we can use, where the DP Interface works?
Thank you for your help.
Best regards

2

We have an own carrier board for the Jetson AGX Xavier where we use a Display Port instead of HDMI.
When we used a Xavier Modul from the developer kit and mounted it on our carrier board, the display
port was working right away. But after installing the newest OS with JetPack 4.2

So what is the original BSP inside it? The JP4.1? Also, what is your board design? Is it using typeC as DP interface or not?

3

Hi WayneWWW

We do not know what was the original BSP installed on the Developer Kit. But we also tested the function with JetPack 4.1 and it was also not working.
Our Board Design is using the HDMI_DP1 Interface.
Thank you.

4

Hi,

Do you mean HDMI_DP1_ or HDMI_DP2? As you know that the usage on default devkit is

HDMI_DP0 → USB type C connector
HDMI_DP1 → USB type C connector
HDMI_DP2 → HDMI connector

If you are using HDMI_DP1, then it does not replace HDMI at all…

5

Thank you for the clarification.
So yes, we use the HDMI_DP1 Interface, but connected to a Display Port connector.

6

If so,

Please remove the “nvidia,typec-port” under the corresponding sor node in device tree.

7

Thank you very much WayneWWW, that worked perfectly.