Re: [PATCH 2/3] dt-bindings: rtc: moxart: use proper names for gpio properties

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On Wed, Feb 01, 2023 at 08:38:48AM +0100, Krzysztof Kozlowski wrote:
> On 01/02/2023 06:48, Dmitry Torokhov wrote:
> > MOXA ART RTC driver has been switched to gpiod API and is now using
> > properly named properties for its gpios (with gpiolib implementing a
> > quirk to recognize legacy names). Change binding document to use
> > proper names as well.
> > 
> > Signed-off-by: Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx>
> > ---
> >  .../devicetree/bindings/rtc/moxa,moxart-rtc.txt      | 12 ++++++------
> >  1 file changed, 6 insertions(+), 6 deletions(-)
> > 
> > diff --git a/Documentation/devicetree/bindings/rtc/moxa,moxart-rtc.txt b/Documentation/devicetree/bindings/rtc/moxa,moxart-rtc.txt
> > index c9d3ac1477fe..1374df7bf9d6 100644
> > --- a/Documentation/devicetree/bindings/rtc/moxa,moxart-rtc.txt
> > +++ b/Documentation/devicetree/bindings/rtc/moxa,moxart-rtc.txt
> > @@ -3,15 +3,15 @@ MOXA ART real-time clock
> >  Required properties:
> >  
> >  - compatible : Should be "moxa,moxart-rtc"
> > -- gpio-rtc-sclk : RTC sclk gpio, with zero flags
> > -- gpio-rtc-data : RTC data gpio, with zero flags
> > -- gpio-rtc-reset : RTC reset gpio, with zero flags
> > +- rtc-sclk-gpios : RTC sclk gpio, with zero flags
> > +- rtc-data-gpios : RTC data gpio, with zero flags
> > +- rtc-reset-gpios : RTC reset gpio, with zero flags
> 
> Your driver breaks the ABI, doesn't it? If not, how are the old
> properties parsed?

It does not. As I mentioned in the driver code patch, commit
eaf1a29665cd ("gpiolib: of: add a quirk for legacy names in MOXA ART
RTC") makes sure gpiolib falls back to trying old variants if it can't
locate properly formatted names.

Thanks.

-- 
Dmitry



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