
All the schematics, layout and footprints used are done in KiCad and I released them as Open Source Hardware:
https://github.com/electroniceel/vocore2-breakout.
So even if you don't want this exact breakout board, maybe the schematics or footprints are a starting point for your own project.
I also published patches to the official OpenWRT tree to configure the Device Tree for the VoCore2. They may serve as an example how to do that for your own project.
Have fun!