Actually we are using about 50 devices of a MT7620A-based router from movingcomm.com.
However, this device type is out of production now.
The firmware is customized, we set it up ourselves, based on a SDK from the vendor, which is in fact a patched version of CC, running a 3.18 kernel, using MT7620A-EVB as basis.
For long-time support, is there any developer able and willing, for a fee, to be negotiated, to apply these patches into current official openwrt-/LEDE distribution, to be supported in the future ?

An alternative would be, as a private, closed-sourcce solution, to modify the existing patch set, to be used on actual openwrt-/LEDE-source tree, like 17.01.04 or upcoming, next release.

Hi

I don't know which variant of MT7620a you are using.
But as there are plenty

git grep mt7620a.dtsi target/linux/ramips/dts/ | wc -l
47

devices which are based on mt7620a.dtsi, which is the source DT for
MT7620a devices.
I should be easy to (re)use one of the files for your device.

Please contact me: paweldembicki@gmail.com.