[rodlette]

AFAIK, Pine64 the company don't do any (?) upstreaming.

Upstreaming for Pine64 devices is done by the community: https://lore.kernel.org/all/?q=pine64+rk3399+add

QuartzPro64 was recently mainlined by megous. I don't think he's employed or compensated by Pine64, but I'm not sure.

The SoCs are added by Rockchip, Collabora, and others.