Finally I got the reason. It seemed that it is a bug in armbian mainline kernel. The LOSC_OUT_GATING_EN register does not be enabled to output the 32.768kHz clock to the wlan module. This clock is used as a low power clock in BCM SoCs. If the clock is missing, the module will down after it enter lo...

Hi all, Recently I tried to Replace the wireless module on NanoPi Neo Air and met some very strange phenomenon. I just solder off the AP6212 module and then replace it with an AP6234 module. When I use the factory FriendlyCore system with brcmfmac43340-sdio.bin & brcmfmac43340-sdio.txt in /lib/f...