This is pretty unlikely, unfortunately. We're generally looking out for a Pi maintainer because it doesn't really have one -- it's not the most desirable platform to hack on, from a developer POV.
Allwinner and Rockchip tend to be pretty solid, as far as SoC go; start here: https://wiki.freebsd.org/arm
The docs that most recently bit us are pcie/ethernet on the RPi4; I got in touch with Broadcom, who is now in a multi-year effort to figure out how to disperse usable docs (under NDA?) to the broader community. I lost faith after 9ish months of poking and getting back "oh, you know how it is" in response.