People need a FTDI driver because the UARTs by FTDI aren't "class compliant". Just as most other interface chips aren't "class compliant". Here are all the dri

People need a FTDI driver because the UARTs by FTDI aren't "class compliant". Just as most other interface chips aren't "class compliant". Here are all the drivers for "proprietary" USB UARTs that are currently supported by Linux: https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tree/drivers/usb/serial https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.... Here's the class compliant "Abstract Control Model driver for USB modems and ISDN adapters": https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tree/drivers/usb/class/cdc-acm.c https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux....