Hello all
The R9 WP76 firmware have usb serial ftdi driver added.
To enable it :
Plug a usb ftdi device
Enter command : modprobe ftdi_sio
Look to /dev you will see ttyUSB0
If you want to have ftdi driver loaded at startup without any script you must rebuild the yocto Distro. Replace « M » by « * » to usb serial and ftdi usb serial .
This take a veryyyy long time
Francis