@CalcProgrammer1 @LeylaLove

Extra point regarding power consumption:

It’s possible to trade a small sub-part of the open U-Boot bootloader and use a proprietary T-FA and DRAM initialisation from Rockchip that enables DRAM downclocking on the phone’s RK3399 and this saves a ton of power, bringing the PinePhone Pro to a much more usable range.

See here: https://xnux.eu/log/091.html

I’ve been using that together with SailfishOS on mine.
I might try this rk2aw+drbin+U-Boot on my PineBook Pro, too.