On OTG USB port the USB3 device is detecting with USB2.0 speed - AGX Xavier Industrial L4T35.5.0


On OTG USB port the USB3 device is detecting with USB2.0 speed with AGX Xavier Industrial
L4T Version - 35.5.0.

Whereas the same BSP version when I flash it on AGX Xavier 32GB module it is detecting with proper speed (USB3 speed).

Below I am attaching dmesg log and dts file captured from both the modules(AGX Xavier 32GB and AGX Xavier Industrial).
kernel_tegra194-p2888-0001-p2822-0000.dts.txt (501.6 KB)
dmesg_AGX_Xavier_32GB.txt (138.3 KB)
kernel_tegra194-p2888-0008-p2822-0000.dts.txt (503.1 KB)
dmesg_AGX_Xavier_Industrial.txt (124.6 KB)

USB issue always requires the schematic.

Hi Wayne,

Below is the screenshot of the schematic.

We have verified TP7(USB3 Power-switch 1) point. It is observed to be 5V.
We tried on one more AGX xavier 32GB module we are observing the similar issue as AGX xavier Industrial module. Below I have attached the dmesg_log and dts of all 3 modules.

Module USB3 Status
AGX Xavier 32GB Module 1 Working
AGX Xavier 32GB Module 2 Not Working
AGX Xavier Industrial 32GB Module 1 Not Working

dmesg_AGX_Xavier_32GB_Module1.txt (108.9 KB)
dmesg_AGX_Xavier_32GB_Module2.txt (119.7 KB)
dmesg_AGX_Xavier_Industrial.txt (124.6 KB)
kernel_tegra194-p2888-0001-p2822-0000_dts_Module1.txt (501.6 KB)
kernel_tegra194-p2888-0001-p2822-0000_dts_Module2.txt (501.6 KB)
kernel_tegra194-p2888-0008-p2822-0000.dts.txt (503.1 KB)

For all the 3 modules I have used the same carrier board.

May I double confirm what software patch you’ve added to make it work?

Your dts file is converted from dtb so it is in hex file. Some info is not able to get checked on my side. For example, the GPIO pin in use for usb_vbus_en pin.

Hi Wayne,

Below is the patch file which I have applied.
patch-enabling_usb_ports.txt (5.5 KB)

It looks like you didn’t give vbus-supply node and a regulator to meet your design.

Hi Wayne,

Can I know where this need to be updated.


please search vbus-supply in above document.

This topic was automatically closed 14 days after the last reply. New replies are no longer allowed.