Bringing up 3DP displays

[ashik.p]

Hi @WayneWWW ,
I am using a custom carrier board with AGX(Using L4T 32.5) and i want to use 3rd display as DP instead of HDMI.

Following are the changes i have done for enabling the 3rd DP.

 &sor2 {
        status = "okay";
-       nvidia,active-panel = <&sor2_hdmi_display>;
+       nvidia,active-panel = <&sor2_dp_display>;
 };
 
-&sor2_hdmi_display {
+&sor2_dp_display {
        status = "okay";
-       disp-default-out {
-               nvidia,out-flags = <TEGRA_DC_OUT_HOTPLUG_LOW>;
-       };
+       nvidia,is_ext_dp_panel = <1>;
 };

Is this sufficient for the 3rd DP to work?

Thanks
Ashik P.

[WayneWWW]

You can try to compare the whole sor and nvdisplay nodes in full dts. Each of them should have similar setting since you set all of them as DP.

[ashik.p]

Thanks @WayneWWW .
I am able to get the 3rd DP display working. I have done the changes as you mentioned.

But now this dp display is acting as primary display.
If i dont connect this dp display and other 2 dp displays connected i am not seeing the bootup logs. Also if i try to stream camera without this dp display am not getting the output on the other screens.

For reference i have attached my changes,
dp3.txt (9.9 KB)

[WayneWWW]

There is no update from you for a period, assuming this is not an issue any more.
Hence we are closing this topic. If need further support, please open a new one.
Thanks

Do you have dmesg to share when the error happens?