Hi, I designed a custom carrier for an Nvidia Jetson Nano module. → The custom carrier has a DisplayPort on DP1 Pins but no HDMI, the DP0 is not assigned! → The Nvidea JETSON NANO KIT has a HDMI at DP1 pins and at DP0 pins the DisplayPort. The DisplayPort is connected on DP1 Pins, as describe …

Update: After configuring 0x6000D700 (GPIO_CNF_7) bit 1 to 0. @ElectronicSystems 's DP1 is working now.

Hi wayneWWW, I think we have a partial success! i have coupled sor1 with dc@54240000 I got the first time via dmesg an extcon-gpio-states output. dmesg: … [ 70.118521] extcon-gpio-states extcon:extcon@1: Cable state:0, cable id:0 [ 70.298519] extcon-gpio-states extcon:extcon@1: Cable stat…

Hi wayneWWW, [image] ElectronicSystems: But it’s funny sometimes it recognizes an extcon-gpio-states and sometimes not ??? something is wrong… I don’t understand this yet… Maybe something is wrong with the display… The display that comes from a major manufacturer connect internally PIN 5/1…

Could you also dump the dpaux_regs again when you see extcon gpio shows something? Also, could you share me the full dmesg and full dts for current setup? [image] Change the device tree for DisplayPort on DP1? Jetson Nano I only use the emmc module, so it c…

Besides the log and the dts files, please also check if you really see gpio extcon when you do the hotplug… Because extcon@1 is actually the function for usb. Not related to DP at all. hardware/nvidia/platform/t210/porg/kernel-dts/porg-platforms/tegra210-porg-extcon-p3448-0000-a00.dtsi vbus_id_…

Hi, [image] WayneWWW: Could you also dump the dpaux_regs again when you see extcon gpio shows something? Also, could you share me the full dmesg and full dts for current setup? I have coupled sor1 with dc@54240000. currently tegra_dp0 is still displayed? Although I am coupled with dc@54240…

Ok, looks like still not work. I may give out another test next Monday. But I also have one question about a new log here. Though it may not resolve the issue… Could you check why below error log was not showing up in your previous log when it was on tegradc.0? You may need to add some log to th…

Hi, [image] WayneWWW: Ok, looks like still not work. I may give out another test next Monday. unfortunately it does not work (yet), I am glad that you support me :-) thank you! You are right that I did not notice. I forgot something, at tegradc.0 I still have in the file tegra210-porg-power…

Hi, i have not yet understood where the dpaux_regs deviations come from? [devkit dpaux_regs]

For any register mentioned in this topic, you can find the definition in the TRM document. Please refer to DPAUX_DP_AUXCTL_0 and DPAUX_DP_AUXADDR_0 in section 27. I am also wondering one test here. Not sure if you can test the same hardware from DP1 to DP0? My purpose here is just to validate whe…

Hi, I also looked it up in the TRM yesterday. [image] WayneWWW: I am also wondering one test here. Not sure if you can test the same hardware from DP1 to DP0? I just wanted to understand if this has internal effects, of course I can test the hardware from DP1 to DP0. but have not found any …

Change the device tree for DisplayPort on DP1?

Robotics & Edge Computing Jetson Systems Jetson Nano

ElectronicSystems November 26, 2021, 6:45am 304

Hi WayneWWW,

we need the audio support unfortunately so we depend on DP1.

Please take your time, we are glad that you help us.

SOR1(=DP1) for DP on Xavier

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Change the device tree for DisplayPort on DP1?

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