Add 'ap6210' to /etc/modules to enable WiFi, and use modprobe ap6210 to force load the module.
Check dmesg to see if all has been loaded correctly. If not, reboot and check again.
sh
dmesg|grep WLAN
Install the required packages:
sh
apt-get install wireless-tools iw wpasupplicant
Modify /etc/network/interfaces
text
# Dinamic IP:
auto wlan0
allow-hotplug wlan0
iface wlan0 inet dhcp
wpa-ap-scan 1
wpa-scan-ssid 1
wpa-ssid "WIFI_NETWORK_NAME"
wpa-psk "WLAN-KEY"
# Static IP:
auto wlan0
allow-hotplug wlan0
iface wlan0 inet static
address 192.168.xx.yy
netmask 255.255.255.0
gateway 192.168.0.1
wpa-ap-scan 1
wpa-scan-ssid 1
wpa-ssid "WIFI_NETWORK_NAME"
wpa-psk "WLAN-KEY"
Bring the interface up:
sh
ifconfig wlan0 up
Source: http://oyox.de/882-wlan-auf-bananian-banana-pi-einrichten/