It turned out the firmware of the SDIO Wi-Fi module is pretty immature, at least right now. These issues are probably already known to developers but are not documented yet. So let’s list them here:
- Multiple SSIDs don’t work.
- WPA-enterprise (802.1x) does not work
- There are stability issues in 5 GHz band (both with and without radar detection) – the Wi-Fi randomly stops working after few hours. Sometimes it becomes invisible, other times it’s visible but association fails.
From my tests, the Wi-Fi is rock-stable when operated in 2.4 GHz band, with one SSID using WPA2-PSK and CCMP cipher (the default settings).