These are prebuilt WiFi modules for OpenWrt, including: mt7603/mt7603e/mt7610/mt7610e/mt76x2e/mt7612/mt7615/mt7615e/mt7620/mt7628/mt7628sta
I assume that you already have a working OpenWrt workspace, then add the following line into "feeds.conf.default" (You will find it under the top dir of your workspace).
src-git mtk https://github.com/luuhungit/mtk-wireless-driver.git
then execute:
scripts/feeds update -f mtk
scripts/feeds install -a -p mtk
Now you will be able to see extra packages via make menuconfig. All packages from this feeds are located under MTK Properties.
An application that translates "/etc/config/wireless" into MTK's WiFi profiles (e.g. mt7620.dat). You may use it as an adapter to make MTK's WiFi drivers work with standard LuCi's WiFi management.
An application that reads/writes configuration files with "=[Value]" syntax. It can be used in your own scripts to help manipulate MTK WiFi profiles.
The term "nvram" in MTK's software means a raw storage scheme on flash chips. It access flash device in raw mode (without filesystem). All data stored in nvram partition are "=[Value]" pairs. It usually resides in mtd partition "config". Note： OpenWrt has replaced nvram scheme with uci long ago. I keep this for back compatibility only.
This is a plugin for LuCI web interface, which manipulates MTK's proprietary drivers by reading/writing its profile directly. It does not use uci, so "/etc/config/wireless" is left untouched.