Firmware

Now you have everything except the firmware loading. The easiest way is to let udev do it. Download rev4fw.zip (note disclaimer here) and unzip it. It contains two files, a small one and a big one. Copy the small file to /usr/lib/firmware/speedtch-1.bin and the big one to /usr/lib/firmware/speedtch-2.bin
# mkdir -p /usr/lib/firmware
# cp small_file /usr/lib/firmware/speedtch-1.bin
# cp large_file /usr/lib/firmware/speedtch-2.bin
If you cannot download this file then follow the instructions of the second link above and use the firmware extractor (or download another firmware which has the two files).