System can’t detect USB hub when cold boot


We used Jetson Nano EVB (B01 version) to verify our AI functions.
System sometimes can’t detect USB hub when cold boot, need to reboot or to power on/off system again.
We check usb hub status as below, we found usb hub (RTS5411) not detect at USB 2.0 bus

lsusb -t
/: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=tegra-xusb/4p, 5000M
|__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/4p, 5000M
|__ Port 1: Dev 3, If 0, Class=Mass Storage, Driver=uas, 5000M
/: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=tegra-xusb/5p, 480M

dmesg (these messages sometimes happened, but sometimes no errors)

usb 1-2: new high-speed USB device number 5 using tegra-xusb

usb 1-2: device descriptor read/64, error -71

Is there anyone can help? Thanks!

Hi ,
You can perform power cycle to the embedded USB hub. Please check
[Jetson Nano]Power control