[PATCH 1/4] dt-bindings: mfd: nxp,bbnsm: Add binding for nxp bbnsm

[Jacky Bai]

Hi Alexandre,

> Subject: Re: [PATCH 1/4] dt-bindings: mfd: nxp,bbnsm: Add binding for nxp
> bbnsm
> 
> On 21/11/2022 13:45:27+0000, Jacky Bai wrote:
> > > > > > Missing ref to rtc.yaml.
> > > > > >
> > > > >
> > > > > This is also missing start-year
> > > >
> > > > The RTC counter will be reset to 0 after PoR reset, do we still
> > > > need to add this property?
> > > >
> > >
> > > Is this really an RTC then?
> >
> > Sorry, I think I misunderstand your previous comment. The 'start-year'
> > is used to expand the rtc range, I will add this property in V2. Thx.
> >
> 
> I think my question is still valid, if the counter is reset to 0 on POR, what is the
> use case?
> 

The RTC can keep running without losing the state if the power rail to it is not cut off.
It has a battery backed supply even if the main power rail is off when device shutdown.
I thought the 'start-year' is to indicate the initial value of the RTC count after first power up.

BR
> 
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