linda

Thanks a lot for your answers and especially for the suggestion to change the boot.cmd.
 
As proposed, I changed two lines concerning the fdtname in the the boot.cmd:
    "load ${devtype} 0 ${fdt_addr_r} ${prefix}dtb/${fdtfile}"
 
but leave these line concerning the overlay-setting unchanged
     "if load ${devtype} 0 ${load_addr} ${prefix}dtb/allwinner/overlay/${overlay_prefix}-${overlay_file}.dtbo; then"
     "if load ${devtype} 0 ${load_addr} ${prefix}dtb/allwinner/overlay/${overlay_prefix}-fixup.scr; then"
 
and recompile boot.cmd.
 
This works for me, also with the allwinner overlay dtbo-file.

Sorry for my delay! Thank you very much for rebuild the beta.armbian.com!
 
Great, now I can use both usb ports with the mainline kernel!
 

Thank you very much for pointing me in the right direction.
I wasn't aware of the possibility to apply overlays to the device tree.
And I didn't want to change the master DT because of loosing my changes in case of updates coming from armbian.
 
Consulting the armbian documentation https://docs.armbian.com/User-Guide_Allwinner_overlays/
I found out there are already overlays supplied for various purposes and I just used: "/boot/dtb/allwinner/overlay/sun50i-a64-uart3.dtbo".
 
After activating the overlay in "ArmbianEnv.txt" I was done. Great!