But isn't connection via "usbserial" somehow limited as this documentation says :
"The gadget serial driver only provides simple unreliable data communication. It does not yet handle flow control or many other features of normal serial devices."
Source : http://www.mjmwired.net/kernel/Docum...get_serial.txt
Executing "usbserial" from /usr/sbin/ turns full serial console over usb just like usbnetwork.
Also I've managed to run it before system bootup by editing "bootmisc.sh" file in /etc/init.d/.
Is there any way to fit it for example in initramfs, so it will run instead of over-TTL-console ?