I am trying to get the USB port working on some AsiaRF MT7620A boards and having issues.

the following shows up when I plug in a PL2303hx based USB to serial adapter (the pl2303 drivers are compiled into the kernel)
[ 2195.610000] usb 2-1: new full-speed USB device number 2 using ohci-platform

but no node is created /dev/ttyUSBX

and subsequent plug/unplug shows nothing in the console log.

a quick google search finds this

http://comments.gmane.org/gmane.comp.em … evel/25773

which suggest that OHCI doesnt currently work with OpenWRT Chaos Calmer trunk.  I am running r42230.

i have the following kernel module enabled...
CONFIG_PACKAGE_kmod-usb-ohci=y

Any thoughts on this would greatly be appreciated.

found this which is a an open ticket on this issue.
https://dev.openwrt.org/ticket/14516

thoughts from anyone?

thanks.

Hi.
I think you try to recompile with coreutils-tty package.

hm.... why do you think this package would help?

As stated in the bug report the USB port works fine with EHCI USB 2.0 devices... So... if you put a USB 2.0 hub in between the router and the OHCI USB 1.1 device everything works perfectly. 

the problem is that the OHCI USB driver is not working for MT7620x.