Cumulus Support

My cp210x driver is loaded but the Pi doesn't want to assign my AW-2080 a virtual tty. Has anyone seen/resolved this issue yet?

system info:

Raspberry Pi Model B
Linux raspberrypi 3.18.11+ #781 PREEMPT Tue Apr 21 18:02:18 BST 2015 armv6l GNU/Linux

output from dmesg:

[ 1537.801959] usb 1-1.2: new low-speed USB device number 10 using dwc_otg
[ 1537.948304] usb 1-1.2: New USB device found, idVendor=1941, idProduct=8021
[ 1537.948348] usb 1-1.2: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[ 1537.994996] hid-generic 0003:1941:8021.0006: hiddev0,hidraw4: USB HID v1.00 Device [HID 1941:8021] on usb-bcm2708_usb-1.2/input0
[ 1938.771071] usb 1-1.2: USB disconnect, device number 10
[ 2098.000606] usb 1-1.2: new low-speed USB device number 11 using dwc_otg
[ 2098.157099] usb 1-1.2: New USB device found, idVendor=1941, idProduct=8021
[ 2098.157145] usb 1-1.2: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[ 2098.202072] hid-generic 0003:1941:8021.0007: hiddev0,hidraw4: USB HID v1.00 Device [HID 1941:8021] on usb-bcm2708_usb-1.2/input0
[ 2374.222801] systemd-udevd[7780]: starting version 215
[ 2777.284950] usb 1-1.2: USB disconnect, device number 11
[ 2830.790389] usb 1-1.2: new low-speed USB device number 12 using dwc_otg
[ 2830.936313] usb 1-1.2: New USB device found, idVendor=1941, idProduct=8021
[ 2830.936359] usb 1-1.2: New USB device strings: Mfr=0, Product=0, SerialNumber

Fine Offset stations (of the type that work with Cumulus, which I think includes the AW-2080) don't use a virtual serial port. If configured with the correct station type (the Fine Offset without solar sensors), then Cumulus should just be able to find it and use it. Is it not working?