Re: [PATCH v8 03/26] dt-bindings: Add doc for the Ingenic TCU drivers

[Paul Cercueil]

Le mar. 18 déc. 2018 à 17:36, Rob Herring <robh@xxxxxxxxxx> a écrit :
> On Mon, Dec 17, 2018 at 4:04 PM Paul Cercueil <paul@xxxxxxxxxxxxxxx> 
> wrote:
> >  Hi Rob,
> >
> >  Le lun. 17 déc. 2018 à 22:05, Rob Herring <robh@xxxxxxxxxx> a 
> > écrit :
> >  > On Wed, Dec 12, 2018 at 11:08:58PM +0100, Paul Cercueil wrote:
> >  >>  Add documentation about how to properly use the Ingenic TCU
> >  >>  (Timer/Counter Unit) drivers from devicetree.
> >  >>
> >  >>  Signed-off-by: Paul Cercueil <paul@xxxxxxxxxxxxxxx>
> >  >>  ---
> >  >>
> >  >>  Notes:
> >  >>       v4: New patch in this series. Corresponds to V2 patches 
> > 3-4-5
> >  >> with
> >  >>           added content.
> >  >>
> >  >>       v5: - Edited PWM/watchdog DT bindings documentation to 
> > point
> >  >> to the new
> >  >>             document.
> >  >>           - Moved main document to
> >  >>             
> > Documentation/devicetree/bindings/timer/ingenic,tcu.txt
> >  >>           - Updated documentation to reflect the new devicetree
> >  >> bindings.
> >  >>
> >  >>       v6: - Removed PWM/watchdog documentation files as asked by
> >  >> upstream
> >  >>           - Removed doc about properties that should be implicit
> >  >>           - Removed doc about ingenic,timer-channel /
> >  >>             ingenic,clocksource-channel as they are gone
> >  >>           - Fix WDT clock name in the binding doc
> >  >>           - Fix lengths of register areas in watchdog/pwm nodes
> >  >>
> >  >>       v7: No change
> >  >>
> >  >>       v8: - Fix address of the PWM node
> >  >>           - Added doc about system timer and clocksource children
> >  >> nodes
> >  >
> >  > I thought we'd sorted this out...
> >
> >  Yeah, well I just can't please everybody. V6/V7 didn't have the
> >  system timer or clocksource in devicetree, which was good for
> >  you, but then the driver nearly doubled in size and complexity,
> >  and Thierry rightfully refused it. Now I'm at the point where
>
> You mean Daniel?

Oops - I meant Daniel yes.

> >  I'm trying alternative ways of encoding the information in
> >  devicetree, as suggested by various people, just so that you
> >  accept it. Because I don't see any other option.
>
> Does the problem boil down to needing to reserve channel x to use PWMx
> pin? If so, just do a mask property of reserved for PWM channels.

Yes, that's exactly the problem. I will go with a property then. Thanks!

> Sorry this is going in circles.
>
> Rob