How to delay USB hub to enumerate usb3.0 devices?

[Luna2020]

Hi NV_Team,

We have a USB3.0 device used on NX, the USB3.0 is not plug and play (such as UVC Camera). Its initialization takes about 8seconds, so we need to delay 10seconds then to start USB3.0 Hub to enumerate the usb device. But we don’t know how to delay 10seconds on Jetson NX to start USB Hub enumerate.
Can you give some advices?

Thanks so much.

[DaneLLL]

Hi,
A user shares a methond to off/on the hub:

Power down USB ports

I think I found a solution now. After trying various different tools it looks like uhubctl supports the RTS5411 USB-Hub of Jetson Nano! I can successfully power down/up the all USB ports using sudo uhubctl -l 1-2 -a off sudo uhubctl -l 1-2 -a on

Enumeration will be triggered after the off/on. Please give it a try.

[Luna2020]

@Power down USB ports

sudo uhubctl -l 1-2 -a off

Hi DaneLLL,

Thanks for your information. It works.