Please do not drop the linux-usb list from CC. Resending my reply to the list and dropping that (private) sourceforge list you added from CC. On Tue, Dec 13, 2016 at 01:47:45PM +0100, Sylvain LG wrote: > Hello Johan, > > I am using the 4.9 kernel provided by Robert C Nelson, from > Beagleboard > > https://github.com/beagleboard/linux/tree/4.9 Please verify that you have the same issue when using a mainline 4.9-kernel, so that this is not just a problem with that tree. > I'm using FTDI products from StarTech.com: > > ICUSB2321F > https://www.startech.com/Cards-Adapters/Serial-Cards-Adapters/1-Port-USB-Serial-RS232-Adapter-Cable~ICUSB2321F That should be an FT232RL. > ICUSB2322F > https://www.startech.com/Cards-Adapters/Serial-Cards-Adapters/2-Port-USB-RS232-Serial-Cable~ICUSB2322F And an FT2232D. > and also an USB Cape which provides 2 USB ports and 2 FTDI serial ports: > > USB-2COM-BB > http://www.titan.tw/product/USB_2COM_BB.html I assume that cape is not supported by a mainline kernel, so please use the on-board BBB host port. > Currently, I could perform tests with StarTech 2 ports ICUSB2322F and > BBB cape USB-2COM-BB. > (But results are the same with all the other stuff). What happens when you use the on-board BBB host port instead of the cape? > lsusb -v returns: > > Bus 001 Device 001: ID 1d6b:0002 > Bus 001 Device 002: ID 05e3:0610 > Bus 001 Device 005: ID 0403:6010 > Bus 001 Device 004: ID 0403:6010 That's not the verbose output (-v) of the (libusb) lsusb. But never mind for now, this sounds like a BBB issue. > After applying your diagnostics patch to ftdio_sio.c, kernel messages are: > > [ 421.937699] ftdi_sio ttyUSB3: ftdi_set_termios FAILED to set > databits/stopbits/parity: -110 So that's an -ETIMEDOUT when no response to this request is received within 1000 ms when the port is opened. Do you see any other error messages when connecting the device(s)? There are a couple of control requests that are sent as part of probe, which could also be failing. > [ 422.961642] ftdi_sio ttyUSB3: ftdi_set_termios urb failed to set baudrate > [ 428.081820] ftdi_sio ttyUSB3: urb failed to clear flow control > > > Thank you for your help, You're welcome. Johan -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
