Re: [PATCH v3 11/11] dt-bindings: gpio: Add bindings for Cadence I3C gpio expander

[Boris Brezillon <boris.brezillon@xxxxxxxxxxx>]

On Mon, 26 Mar 2018 12:12:54 +0200
Geert Uytterhoeven <geert@xxxxxxxxxxxxxx> wrote:

> Hi Boris,
> 
> On Fri, Mar 23, 2018 at 12:00 PM, Boris Brezillon
> <boris.brezillon@xxxxxxxxxxx> wrote:
> > Document the Cadence I3C gpio expander bindings.
> >
> > Signed-off-by: Boris Brezillon <boris.brezillon@xxxxxxxxxxx>  
> 
> Thanks for your patch!
> 
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/gpio/gpio-cdns-i3c.txt  
> 
> > +- #interrupt-cells : Should be 2.  The first cell is the GPIO number.
> > +  The second cell bits[3:0] is used to specify trigger type and level flags:
> > +      1 = low-to-high edge triggered.
> > +      2 = high-to-low edge triggered.
> > +      3 = triggered on both edges.
> > +      4 = active high level-sensitive.
> > +      8 = active low level-sensitive.  
> 
> These are identical to the values in <dt-bindings/interrupt-controller/irq.h>.
> Perhaps you can refer to those definitions?

Well, I'm not sure this is allowed since DT bindings docs are
supposed to be OS-agnostic and macros defined in
<dt-bindings/interrupt-controller/irq.h> are, AFAIK, only available to
Linux.

Note that I copied these definitions from another binding ;-).

Rob, any opinion?


-- 
Boris Brezillon, Bootlin (formerly Free Electrons)
Embedded Linux and Kernel engineering
https://bootlin.com
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