How to using usb 2.0 without ic hub

Autonomous Machines Jetson & Embedded Systems Jetson Nano
1

Hello bros,

My custom board for jetson B01 not have usb hub because i want to connect direct to jetson nano. But i can’t using usb, when i plug some periferal (mouse, keyboard…) power led blink fast once then…nothing happen.

Any suggest for me, i tried changed some item on device tree but not OK!

Thank for any comment.

2

Hi, which usb port did you try? What’s the difference on usb part between your design and reference design? Did you follow OEM DG to make the custom board? Also there is a checklist table in OEM DG which you should check items one by one first.

3

Hi Trumany,

This is USB1 on SoM’s (pin 115, 117), i’m using B01 version. USB2 (pin 121, 123) working well.

4

Hi,
On devkit, it is USB3 type A port with 115,117 + 161,163,166,168 + 239 pins. Do you have different layout on your board?

5

Hi DaneLLL,

Problem had been resolved. I add diode TVS to usb’s bus. Remove it and DONE.

6

Hi hoanganhv,
I have designed a custom carrier board with Nano usb 2.0 port and usb 3.0 port. I meet a problem.
1.Plug a usb 2.0 mouse in usb 2.0 port, it works OK.
2.Plug a usb 2.0 mouse in usb 3.0 port, it works OK.
3.Plug a usb 2.0 mouse in usb 3.0 port, Plug a usb 3.0 disk in usb 2.0 port, both work OK
4.Plug a usb 2.0 mouse in usb 2.0 port, Plug a usb 3.0 disk in usb 3.0 port, mouse can not work fine.
Do you have same problem?
Thanks.
David

7

Hi,

I don’t using usb 3.0 on my custom board. Type

lsusb -t

To see some info you need with your choise #4