[systemd-devel] use RTC date/time to set system date time

[Kevin P. Fleming]

It's fairly simple to add a one-shot service unit to use 'hwclock' to
read from the RTC and set the kernel's real-time clock. I do this on
my RPis which use modules for their RTCs.

On Mon, Mar 1, 2021 at 9:02 AM Michał Zegan <webczat_200 at poczta.onet.pl> wrote:
>
> Someone should really find a way to make it cooperate well with modular
> rtcs.
> It's popping up over and over and over and over again and no one is/will
> build all rtc drivers into the kernel.
>
> W dniu 01.03.2021 o 13:04, Mantas Mikulėnas pisze:
> > Normally I think systemd expects the kernel to do this on its own.
> >
> > On Mon, Mar 1, 2021, 12:31 Belisko Marek <marek.belisko at gmail.com
> > <mailto:marek.belisko at gmail.com>> wrote:
> >
> >     Hi,
> >
> >     I have a case when a board boots without network connection but RTC
> >     have the correct date/time. Does systemd use RTC date/time to set
> >     systemd time or it needs to be done manually?
> >
> >     Thanks and regards,
> >
> >     marek
> >
> >     --
> >     as simple and primitive as possible
> >     -------------------------------------------------
> >     Marek Belisko - OPEN-NANDRA
> >     Freelance Developer
> >
> >     Ruska Nova Ves 219 | Presov, 08005 Slovak Republic
> >     Tel: +421 915 052 184
> >     skype: marekwhite
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