Upstream source: https://www.maxlinear.com/support/design-tools/software-drivers
- Fix errors in code.
- Update to support kernel 5.x
- Add udev rules to load correct module/unload cdc_acm
- Add the 9-bit mode support.
- Disbale the debug messages.
- Fixed Bug: The conditional logic to support kernel 3.9 was incorrect(line 396 in xr_usb_serial_common.c).
- XR21V1410/1412/1414
- XR21B1411
- XR21B1420/1422/1424
- XR22801/802/804
The source code has been tested on various Linux kernels from 3.6.x to 3.17.x.
This may also work with newer kernels as well.
- Compile and install the common usb serial driver module
- make
- make modules_install
- Copy udev rules from folder udev_rules, see README in that subfolder
- Plug the device into the USB host. You should see up to four devices created, typically /dev/ttyXRUSB[0-3].
- Check that the USB UART is detected by the system
- lsusb
- Check that the CDC-ACM driver was not installed for the Exar USB UART
-
ls /dev/tty* To remove the CDC-ACM driver and install the driver:
-
rmmod cdc-acm
-
modprobe -r usbserial
-
modprobe usbserial
-
insmod ./xr_usb_serial_common.ko
Send any technical questions/issues to [email protected].