Help is appreciated as I try to learn. Searching has yielded little to no help...
The wiki http://archlinuxarm.org/platforms/armv5/tonidoplug-2 provides the following information for enabling the wifi capability on the TP2:
$this->bbcode_second_pass_quote('', 'E')nabling wireless
Edit /etc/rc.conf and add 'mwifiex_sdio' to the MODULES definition. It should look like: MODULES=(mwifiex_sdio)
Reboot, or simply modprobe mwifiex_sdio. You will now have an mlan0 interface for the wireless adapter.