Thanks guys for being so supportive. Your links are very helpful.We 'll try to finish our current work with a device tree integrating an external RTC ...
We use a bunch of scripts & work made by the board provider but they use a very old kernel (4.1) and this kernel does not evolve anymore. That's why we'd like to port your excellent work to have a fresh kernel and something very close from
Debian....
Merry christmas to all hardware hackers...
Best regards