Well, this commit enabled g_serial for Orange Pi Lite (and I believe we will do the same for NanoPi Air as well). Maybe FA simply missed the existence of g_serial module (or maybe even worse they tried to implement g_ether just to realize that in their kernel fork a patch might be missing?).   Edit: unfortunately currently NanoPi Air comes with a pre-populated eMMC (with a more or less unaccessible OS image for whatever reasons) so it's necessary to flash the fel-sdboot.img OS image that's par