25.05: raspberry pi zero 2W firmware won't connect to some access points

[srd424]

Cross-post from NixOS/nixpkgs#425395 as it was suggested this repo might be more appropriate:

More recent Linux drivers/firmware seem to cause problems between the wifi on the Raspberry Pi Zero 2W and some access points; in my case I'm hitting it with Mikrotik kit and Nixos 25.05. The closest thing to an upstream bug report I've found is raspberrypi/bookworm-feedback#279

Fortunately the simple fix that is working here is:

boot.extraModprobeConfig = ''
options brcmfmac feature_disable=0x2000
'';

This seems to be the right repo for board-specific workarounds, although I note there doesn't seem to be a subdir for the pi zero / pi zero 2 yet?