On Fri, Jul 01, 2022 at 03:16:13AM +0000, Neal Liu wrote: > Hi all, > > I have a question about USB-serial and I hope I can find the answer from here. > I'll be appreciated it if there is any feedback from you. > > My question is If I have a USB device controller (udc) and a uart controller (16550) independently in a SoC, > is there any usb-serial drivers or applications that could possible to support/connect: > - udc tx to uart rx > - uart tx to udc rx > > Any chance I can make this SoC as a usb-serial devices? Sure, use the CONFIG_USB_CONFIGFS_SERIAL or CONFIG_USB_CONFIGFS_ACM build options and hook your gadget up to the serial port in userspace and you will have a very expensive usb-serial converter (there are very cheap chips that do the same thing if you want to make a simpler device.) hope this helps, greg k-h
