Official touchscreen not working on aarch64 Pi 4

[coolgoose1]

I am new to Pi, though have been using Linux for years now.

Has anyone had any success with getting official 7" touchscreen to work with aarch64 ? The display works fine using fbturbo driver. But I am not able to get the touchscreen working. I tried loading raspberry-ts module and installing evdev X input driver. My guess is that kernel is not seeing and loading touchscreen.

[coolgoose1]

Mainline kernel does have support Official Raspberry Pi Touchscreen.

https://github.com/torvalds/linux/blob/ ... rrypi-ts.c

https://github.com/torvalds/linux/blob/ ... en/Kconfig

Am I missing proprietary firmware ?