I wonder how it does that.
AFAICT, boards like Orange Pi PC Plus do not have any power management unit (e.g., something like AXP209).
Also, I do not see any PSCI support for shutdown.
No GPIO shutdown either.
There does not seem to be a syscon poweroff method too.
I looked at various drivers under drivers/reset and beyond and I could not find anything that would be compatible with Orange Pi H3-based boards.
So, I am very curious what mechanism Linux or Armbian uses for powering off on those boards .