Just sharing this here since a bunch of folks were discussing about GPU drivers for GNU/Linux distros
Panfrost is a free and open source driver for Mali Midgard and Bifrost GPUs.
The driver is capable of running a few demos and has been upstream to Mesa & Linux (currently in linux-next). It has been tested on Rockchip RK3288/R3399, and Amlogic S912 with the Arm Mali-T764, Arm Mali-T864, and Arm Mali-T820MP3 GPUs respectively.