Rebot issue with A20-olinuxino-micro

Dear all,
I flashed on sd card the official squashfs img for A20-olinuxino-micro and I have noticed that you cannot reboot the board. I tried also building my own image but result is just the same.

The setup is the A20-olinuxino-micro and debug serial usb. If I issue a soft reboot, the board seems to start rebooting but it hangs here:

U-Boot SPL 2019.01 (Feb 27 2020 - 21:03:18 +0000)
DR▒▒▒px▒x▒x▒▒80p▒p▒`@

See the complete boot process in:
https://pastebin.com/4juReJYU

Some other weird stuff happens during boot: at time 10 I can hit return and the console is ready, byt after 20 secs (at time 32) I see other kernel messages:
[ 32.490816] ldo3: disabling
[ 32.493948] ldo4: disabling
[ 32.497057] usb0-vbus: disabling

I expect the issue to be related somehow to the AXP209 configuration.
Any ideas?

Regards,
Vincenzo