We want to connect USB OTG port to Windows PC, and it may need CDC Ether built in.
Windows PC----usb line----USB OTG port of i.MX6ULL EVK
We have checked default menuconfig and found "Device Drivers->USB support->USB Modem (CDC ACM) support" is set to <M> by default already.
Then, we connect USB OTG port to Windows PC, but we don't see anything happen on both sides.
root@imx6ull14x14evk:~# ls -al /sys/bus/usb/devices/