All have a look at hrv/jhre - Codeberg.org repository I have organized. You can contribute your interpretation of any function at some address. There is a HOWTO getting started guide which describes how to begin with Ghidra. Pull requests are welcome and if you have a Codeberg (non-profit community git server effort) account you are then welcome to be added to the Org and commit directly on the repo. This is a kind of fun puzzle for anyone at any skill level: there are some easy const functions such as 2a0001ec-function-oscillator_frequency_24MHz.c that take only a moment to reason about then fill out.
To the IDA and radare2 experts I do encourage to expand the HOWTO guide with complete descriptions of getting started in these tools as well.
Happy hacking, everyone!