Re: [PATCH 4/9] dt-bindings: add Marvell PMU documentation

[Russell King - ARM Linux <linux-lFZ/pmaqli7XmaaqVzeoHQ@public.gmane.org>]

On Thu, Mar 12, 2015 at 04:32:07PM -0500, Rob Herring wrote:
> On Thu, Mar 12, 2015 at 1:31 PM, Russell King
> <rmk+kernel-lFZ/pmaqli7XmaaqVzeoHQ@public.gmane.org> wrote:
> > Add the required DT binding documentation for the Marvell PMU driver.
> >
> > Signed-off-by: Russell King <rmk+kernel-lFZ/pmaqli7XmaaqVzeoHQ@public.gmane.org>
> > ---
> >  Documentation/devicetree/bindings/soc/dove/pmu.txt | 49 ++++++++++++++++++++++
> >  1 file changed, 49 insertions(+)
> >  create mode 100644 Documentation/devicetree/bindings/soc/dove/pmu.txt
> >
> > diff --git a/Documentation/devicetree/bindings/soc/dove/pmu.txt b/Documentation/devicetree/bindings/soc/dove/pmu.txt
> > new file mode 100644
> > index 000000000000..9617aa298dd4
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/soc/dove/pmu.txt
> > @@ -0,0 +1,49 @@
> > +Device Tree bindings for Marvell PMU
> > +
> > +Required properties:
> > + - compatible: value should be "marvell,dove-pmu".
> > + - reg: two base addresses and sizes of the PM controller and PMU.
> > + - interrupts: single interrupt number for the PMU interrupt
> > + - interrupt-controller: must be specified as the PMU itself is an
> > +    interrupt controller.
> 
> Is it always an interrupt controller or just in low power modes like
> ones typically tacked on to GICs?

Always.  It's an interrupt controller: it takes interrupts from other
parts of the system with individual status and masks, and forwards it
on as a single interrupt input to the upstream interrupt controller.

> > + - #interrupt-cells: must be 1.
> > + - #reset-cells: must be 1.
> > +
> > +Optional properties:
> > + - None
> > +
> > +Domain descriptions are listed as child nodes of the power management
> 
> "Power domain descriptions..." just to be clear.

Ok.

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