Re: [PATCH 1/3 v3] dt-bindings: abx80x: Add autocal-filter property

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On Mon, Jul 13, 2020 at 2:39 PM Rob Herring <robh@xxxxxxxxxx> wrote:
>
> On Mon, Jun 15, 2020 at 06:51:11AM -0400, Kevin P. Fleming wrote:
> > Add a property to allow control of the autocalibration filter
> > capacitor.
> >
> > Signed-off-by: Kevin P. Fleming <kevin+linux@xxxxxxx>
> > Cc: Alessandro Zummo <a.zummo@xxxxxxxxxxxx>
> > Cc: Alexandre Belloni <alexandre.belloni@xxxxxxxxxxx>
> > Cc: Rob Herring <robh+dt@xxxxxxxxxx>
> > To: linux-rtc@xxxxxxxxxxxxxxx
> > To: devicetree@xxxxxxxxxxxxxxx
> > ---
> > v3: corrected whitespace
> >  Documentation/devicetree/bindings/rtc/abracon,abx80x.txt | 8 ++++++++
> >  1 file changed, 8 insertions(+)
> >
> > diff --git a/Documentation/devicetree/bindings/rtc/abracon,abx80x.txt b/Documentation/devicetree/bindings/rtc/abracon,abx80x.txt
> > index 2405e35a1bc0f..1b606e33d1a83 100644
> > --- a/Documentation/devicetree/bindings/rtc/abracon,abx80x.txt
> > +++ b/Documentation/devicetree/bindings/rtc/abracon,abx80x.txt
> > @@ -29,3 +29,11 @@ and valid to enable charging:
> >   - "abracon,tc-diode": should be "standard" (0.6V) or "schottky" (0.3V)
> >   - "abracon,tc-resistor": should be <0>, <3>, <6> or <11>. 0 disables the output
> >                            resistor, the other values are in kOhm.
> > +
> > +All of the devices can have a 47pf capacitor attached to increase the
> > +autocalibration accuracy of their RC oscillators. To enable or disable usage
> > +of the capacitor the following property can be defined:
> > +
> > + - "abracon,autocal-filter": should be <0> or <1>. 0 indicates that there
> > +                             is no capacitor attached, 1 indicates that there
> > +                             is a capacitor attached.
>
> What does not present mean? If you don't have a defined meaning (such
> as maintain the default/bootloader initialized setting), then make this
> boolean.

That is the intended meaning (leave the current setting unmodified). I
can add that to the documentation so it is clear.



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