Jetson agx orin An exception occurs when miniDP is used on the customized board

[Andyyyyy]

Hi,

I used miniDP in my custom carrier,
But it is not working properly now, can not display the interface properly.

This is the pin usage in the custom board：

[WayneWWW]

Does that work if you use other kind of DP monitors?

[Andyyyyy]

Hi wayne,

I have changed other DP monitors, but there is still no video signal output.
Is there any way to verify it? Or provide you with useful information or clues？

[Trumany]

Hi, I don’t see your full design of DP port as below example. Can you share a full version?

[Andyyyyy]

Hello Trumany, this is the complete DP port design, schematic part

[WayneWWW]

We want to know where does that GPU_DP_LAN go to.
You don’t need to paste same info twice.

[Andyyyyy]

[Andyyyyy]

This is the custom board, HDMI_DP part of pinmux

[Trumany]

There are on level shift to HPD and no pull-up/down to AUX lines which you can see in the example. You can refer to P3737_A04 or P3509 schematic in DLC for detail DP port design.

[Andyyyyy]

Hi，
The way I use the fly line,the pull up/pull down resistor is alread on board.

[Trumany]

Is there level shift for HPD on your board? You can refer to HPD design of P3509 schematic as below.

[Andyyyyy]

[Andyyyyy]

Hi Trumany，

Level shift on custom board (1.8V to 3.3V).

[WayneWWW]

Which jetpack version is in use?

[Andyyyyy]

jetpack 5.1

[WayneWWW]

Do you have orin agx devkit?

[Andyyyyy]

I have orin agx devkit, do I need to port to devkit for testing?

[WayneWWW]

please directly put your module from your custom board to devkit. Check if you can connect a DP to it and if that DP works.

[Andyyyyy]

Hi, Wayne,

I’m going to put Orin into devkit.

[kayccc]

Sorry for the late response, have you managed to get issue resolved or still need the support? Thanks