How to enable serial driver for ttyUSB modems?

Which system do you use? Android, Ubuntu, OOWOW or others?

Ubuntu

Which version of system do you use? Please provide the version of the system here:

20.04

Please describe your issue below:

I want to enable serial driver to communicate with modem via ttyUSB, I have been able to do this by enabling “otg-device” in the dtb overlays, but I believe there should be another way of doing this without necessarily enabling otb feature. I also do not want to enable ext_board overlay because it kills the pin 22 gpio which I am using for a LED. Please advise

Is enabling otg in overlays the correct solution?

Post a console log of your issue below:


not relevant, read description above.

Hello @LuisDias
I don’t understand your question, the following document may be helpful to you.
http://docs.khadas.com/products/sbc/vim3/development/setup-serial-tool