Hey Nvidia people,
Currently I have custom board that connect the usb port of jetson nano to USB-UART chip for serial.
In normal condition after the jetson nano is booted up, I can see /dev/ttyUSB0 (actually up to /dev/ttyUSB2 since I connect 3 of it) and everything works fine.
However some of the time after I power it, I cannot see any /dev/ttyUSB*, it maybe happens 3/10. This problems disappear after I power cycle.
My questions is why it is like this and is there some modification in kernels I can do to avoid this?
If not, is there a command to reset usb driver after boot?