Previous posts on the R8000P/R7900P have had issues with wireless not working. This was attributed to a missing kmod-brcmfmac.
22.03.2 builds:
https://downloads.openwrt.org/releases/22.03.2/targets/bcm4908/generic/
It looks like the firmware is now available:
https://downloads.openwrt.org/releases/22.03.2/targets/bcm4908/generic/kmods/5.10.146-1-f1f1d18f9c23f6381b1c0bcec93a85c6/
Any success with wireless?