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Commit afbbd233 authored by Geert Uytterhoeven's avatar Geert Uytterhoeven Committed by Thomas Gleixner
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irqchip/gic: Document optional Clock and Power Domain properties 



Depending on the GIC variant, the GIC module has one or more clock
inputs. Document the optional "clocks" and "clock-names" properties,
and their possible values, based on the Technical Reference Manuals.
optional.

Add the optional "power-domains" property.

This will allow to describe in DT the relationship between the GIC and
the Clock and/or Power Domain topology on SoCs where this is relevant
and needed for proper operation.

Note: As the current GIC driver doesn't support Runtime PM yet, PM
Domain constraints must be handled elsewhere in e.g. platform code.

Signed-off-by: default avatarGeert Uytterhoeven <geert+renesas@glider.be>
Acked-by: default avatarRob Herring <robh+dt@kernel.org>
Cc: linux-arm-kernel@lists.infradead.org
Cc: Pawel Moll <pawel.moll@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Kumar Gala <galak@codeaurora.org>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: Ian Campbell <ijc+devicetree@hellion.org.uk>
Link: http://lkml.kernel.org/r/1442261204-30931-3-git-send-email-geert%2Brenesas@glider.be


Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
parent 8709b9eb

Documentation/devicetree/bindings/arm/gic.txt

+15 −0
Original line number Diff line number Diff line
@@ -59,6 +59,21 @@ Optional 
  regions, used when the GIC doesn't have banked registers. The offset is

  cpu-offset * cpu-nr.



- clocks        : List of phandle and clock-specific pairs, one for each entry

  in clock-names.

- clock-names   : List of names for the GIC clock input(s). Valid clock names

  depend on the GIC variant:

	"ic_clk" (for "arm,arm11mp-gic")

	"PERIPHCLKEN" (for "arm,cortex-a15-gic")

	"PERIPHCLK", "PERIPHCLKEN" (for "arm,cortex-a9-gic")

	"clk" (for "arm,gic-400")

	"gclk" (for "arm,pl390")



- power-domains : A phandle and PM domain specifier as defined by bindings of

		  the power controller specified by phandle, used when the GIC

		  is part of a Power or Clock Domain.





Example:



	intc: interrupt-controller@fff11000 {