Display port for TX2i is not working

Robotics & Edge Computing Jetson Systems Jetson TX2
1

Hello.

I’d like to know if DisplayPort DP0 and DP1 are supported in Jetson TX2i, Actually, we are replacing HDMI port to DP port.
I have modified dts is sudo vim /media/pbb/JetPack_4.4_Linux_JETSON_TX2I/Linux_for_Tegra/sources/hardware/nvidia/platform/t18x/quill/kernel-dts/tegra186-quill-p3489-1000-a00-00-base.dts
Here I made changes is for DP port.
but still, I’m unable to boot with DP port
The Dmesg logs getting like this please take look and help out me.

[ 457.563648] tegradc 15220000.nvdisplay: dp: HPD is not detectd
[ 457.563652] tegradc 15220000.nvdisplay: dp: Failed to read DPCD data. CMD 0x0
[ 457.563668] tegradc 15220000.nvdisplay: dp: HPD is not detected
[ 457.563671] tegradc 15220000.nvdisplay: dp: Failed to read DPCD data. CMD 0x0

[ 169.100795] tegradc 15220000.nvdisplay: dp: Failed to write DPCD data. CMD 0x600, Status 0x10000100
[ 169.123980] tegradc 15220000.nvdisplay: dp: aux read got error (0x10000100)
[ 169.123984] tegradc 15220000.nvdisplay: dp: Failed to read DPCD data. CMD 0xe, Status 0x10000100
[ 169.123988] tegradc 15220000.nvdisplay: dp: Failed to read ext DPCD caps
[ 169.123992] tegradc 15220000.nvdisplay: dp: Invalid link rate (0) or lane count (2)
[ 169.133320] tegradc 15220000.nvdisplay: dp: aux write got error (0x10000100)
[ 169.133324] tegradc 15220000.nvdisplay: dp: Failed to write DPCD data. CMD 0x600, Status 0x10000100
[ 169.138234] tegradc 15220000.nvdisplay: dp: aux write got error (0x10000100)
[ 169.138247] tegradc 15220000.nvdisplay: dp: Failed to write DPCD data. CMD 0x600, Status 0x10000100
[ 169.143547] tegradc 15220000.nvdisplay: dp: aux write got error (0x10000100)
[ 169.143552] tegradc 15220000.nvdisplay: dp: Failed to write DPCD data. CMD 0x600, Status 0x10000100
[ 169.148675] tegradc 15220000.nvdisplay: dp: aux write got error (0x10000100)
[ 169.148680] tegradc 15220000.nvdisplay: dp: Failed to write DPCD data. CMD 0x600, Status 0x10000100

Regards,
Parashuram

3

How about telling us what you’ve changed to your dts instead of only one sentence “Here I made changes is for DP port”?

4

Thanks for your reply.
Here I made changes is for DP port in this dts file tegra186-quill-p3489-1000-a00-00-base.dts
changes are below please take a look and help out me in this

sor {
status = “okay”
dp-display {
status = “oaky”;
};
hdmi-display {
status = “disabled”;
};
panel-s-edp-uhdtv-15-6 {
smartdimmer {
status = “disabled”;
};
};
}; dpaux@155c0000 {
status = “okay”;
};

5

Hi,

Just another user ask similar questions at the same time. Maybe you could track this thread too.

7

Hi Wayewww,

DP is working for TX2i.
Thanks for your support.

Regards
Parashuram