RE: [PATCH RFC V1 3/3] devicetree: da9062: Add device tree bindings for DA9062 RTC

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On 18 July 2015 00:48, Alexandre Belloni wrote:

> On 09/07/2015 at 08:45:54 +0100, S Twiss wrote :
> > From: S Twiss <stwiss.opensource@xxxxxxxxxxx>
> >
> > Add device tree bindings for the DA9062 RTC driver component
> >
> > Signed-off-by: Steve Twiss <stwiss.opensource@xxxxxxxxxxx>

[...]

> > +- rtc : This node defines settings required for the Real-Time Clock associated
> > +  with the DA9062. There are currently no entries in this binding, however
> > +  compatible = "dlg,da9062-rtc" should be added if a node is created.

[...]

> > @@ -55,6 +60,10 @@ Example:
> >  		interrupts = <11 IRQ_TYPE_LEVEL_LOW>;
> >  		interrupt-controller;
> >
> > +		rtc {
> > +			compatible = "dlg,da9062-rtc";
> > +		};
> > +
> 
> Are those subnodes even parsed? As the parent node is not compatible
> with "simple-bus" or "simple-mfd", I guess not. You driver is probed
> from the mfd_cells in da9063-core.c

Hi Alexandre,

If I miss out the compatible line for the RTC in the DTSI for DA9062, or is I alter it
so it does not match the string specified in the DA9063 RTC driver, the DA9063 RTC
driver will not be probed for the DA9062 compatibility.
The RTC compatible = "dlg,da9062-rtc"  is essential in this case.

[...]

Regards,
Stephen

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