The network config wiki page is outdated on this topic:
Can anyhone hint at what are the layer 2 options that apply to the device config type?
Are we talking only about the bridge related options or are there also other options?
I tried looking at the source code of openwrt but it's not really easy to find this info, I am not sure whether I should look into netifd (which I tried but it doesn't seem concerned with UCI) or elsewhere, any pointers are appreciated.