A much improved touchpad firmware for the #pinebookpro is now available for flashing! Presently, the process requires some degree of Linux knowledge, but even a novice should be able to follow the instructions. If you're not comfortable with executing the process, community developer dsimic is working on a use-friendly and (more) automated utility for flashing the firmware.

Follow link for instructions: https://forum.pine64.org/showthread.php?tid=14531