RTC (Real-Time Clock) - HA OS 5.12 on RPi 4B

Materials and configurations:

  • RTC module DS1307 - see photo;
  • boot disk attached to PC & changes made in config.txt:

On restart (with complete unplug from power) with NO Internet connection see in HA Host log:

[    3.812698] rtc-ds1307 1-0068: registered as rtc0

And voila - time is correct.

Is this complete? ie: is info on disabling the fake hardware clock missing or not needed?