USB_SS1 default route to USB2.0, Can I change it to USB3.0 ? (Bus 01.Port 1:Dev1 Calss=root_hub xhci_tegra/4p, 480M)

Autonomous Machines Jetson & Embedded Systems Jetson TX2
1

Dear,

We develop a carrier board for TX2, using two USB 3.0 connect from USB_SS0 and USB_SS1, but it can only recognize one USB3.0 device(Bus 002), but USB_SS1 is default route to Bus 001, and Bus 001 is for USB 2.0?
How can I change USB_SS1 to USB 3.0 root hub or USB_SS1

nvidia@tegra-ubuntu:~$ lsusb 
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

I plug-in two USB3.0 HardDisk to these two USB ports, and get this information.

nvidia@tegra-ubuntu:~$ lsusb -t
/: – Bus 02.Port 1:Dev1 Calss=root_hub xhci_tegra/3p, 5000M
   |__ Port1: Dev 3, If 0, Class=Mass Storage, Driver=usb-storage, 5000M
/: – Bus 01.Port 1:Dev1 Calss=root_hub xhci_tegra/4p, 480M
   |__ Port1: Dev 3, If 0, Class=Mass Storage, Driver=usb-storage, 480M
2

Hi dennis_Leetop,

You need software configuration to enable both 2 usb3.0. Do you know how to?

TX2 adaptation guide has some guidance.

3

Dear WayneWWW,

Do you mean this doc <Tegra_Linux_Driver_Package_TX2_Adaptation_Guide.pdf> ? If so, I will try to modify the configuration!
Thanks

4

Dear,

By the way, TX1’s USB 3.0 is right

nvidia@tegra-ubuntu:~$ lsusb -t
/:  Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci-tegra/4p, 5000M
    |__ Port 1: Dev 2, If 0, Class=Vendor Specific Class, Driver=r8152, 5000M
    |__ Port 3: Dev 4, If 0, Class=Mass Storage, Driver=usb-storage, 5000M
/:  Bus 01.Port 1: Dev 1, Class=root_hub, Driver=xhci-tegra/5p, 480M
    |__ Port 1: Dev 2, If 0, Class=Human Interface Device, Driver=usbhid, 12M
    |__ Port 1: Dev 2, If 1, Class=Human Interface Device, Driver=usbhid, 12M

nvidia@tegra-ubuntu:~$ uname -a
Linux tegra-ubuntu 4.4.38-tegra #1 SMP PREEMPT Mon Sep 10 15:14:14 CST 2018 aarch64 aarch64 aarch64 GNU/Linux

nvidia@tegra-ubuntu:~$ lscpu 
Architecture:          aarch64
Byte Order:            Little Endian
CPU(s):                4
On-line CPU(s) list:   0-3
Thread(s) per core:    1
Core(s) per socket:    4
Socket(s):             1
Model name:            ARMv8 Processor rev 1 (v8l)
CPU max MHz:           1734.0000
CPU min MHz:           102.0000
L1d cache:             32K
L1i cache:             48K
L2 cache:              2048K
nvidia@tegra-ubuntu:~$
5

Dear WayneWWW,

After modify the dts files, both USB_SS0 and USB_SS1 can using as USB3.0, but there is only one USB3.0 hub and one USB 2.0 hub .
Can I change the dts to recognize two USB 3.0 hub ?

nvidia@tegra-ubuntu:~$ lsusb -t
/: – Bus 02.Port 1:Dev1 Calss=root_hub xhci_tegra/3p, 5000M
   |__ Port1: Dev 3, If 0, Class=Mass Storage, Driver=usb-storage, 5000M
   |__ Port3: Dev 2, If 0, Class=Mass Storage, Driver=usb-storage, 5000M
/: – Bus 01.Port 1:Dev1 Calss=root_hub xhci_tegra/4p, 480M

nvidia@tegra-ubuntu:~$ lsusb 
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
6

Hi Dennis,

This usb3.0 hub is the usb controller and there is only one on tx2, so the answer to your question is no.

7

Dear WayneWWW,

Thanks so much for your answer.