From mboxrd@z Thu Jan 1 00:00:00 1970 From: Marc Zyngier Subject: Re: [PATCH 4/4] arm64: dts: add .dts for GICv3 Foundation model Date: Tue, 13 Oct 2015 11:44:40 +0100 Message-ID: <561CE098.2030906@arm.com> References: <1444729069-27922-1-git-send-email-andre.przywara@arm.com> <1444729069-27922-5-git-send-email-andre.przywara@arm.com> Mime-Version: 1.0 Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1444729069-27922-5-git-send-email-andre.przywara-5wv7dgnIgG8@public.gmane.org> Sender: devicetree-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Andre Przywara , robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org, pawel.moll-5wv7dgnIgG8@public.gmane.org, mark.rutland-5wv7dgnIgG8@public.gmane.org, ijc+devicetree-KcIKpvwj1kUDXYZnReoRVg@public.gmane.org Cc: catalin.marinas-5wv7dgnIgG8@public.gmane.org, will.deacon-5wv7dgnIgG8@public.gmane.org, devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, galak-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org, drjones-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org List-Id: devicetree@vger.kernel.org On 13/10/15 10:37, Andre Przywara wrote: > The ARMv8 Foundation model sports a command line parameter to use > a GICv3 emulation instead of the default GICv2 interrupt controller. > Add a new .dts file which reuses most of the definitions of the > existing model while just adding the required properties for the > GICv3 node. > This allows the public Foundation model to run with a GICv3. > > Signed-off-by: Andre Przywara > --- > arch/arm64/boot/dts/arm/Makefile | 2 +- > arch/arm64/boot/dts/arm/foundation-v8-gicv3.dts | 30 +++++++++++++++++++++++++ > 2 files changed, 31 insertions(+), 1 deletion(-) > create mode 100644 arch/arm64/boot/dts/arm/foundation-v8-gicv3.dts > > diff --git a/arch/arm64/boot/dts/arm/Makefile b/arch/arm64/boot/dts/arm/Makefile > index bb3c072..46d342d 100644 > --- a/arch/arm64/boot/dts/arm/Makefile > +++ b/arch/arm64/boot/dts/arm/Makefile > @@ -1,4 +1,4 @@ > -dtb-$(CONFIG_ARCH_VEXPRESS) += foundation-v8.dtb > +dtb-$(CONFIG_ARCH_VEXPRESS) += foundation-v8.dtb foundation-v8-gicv3.dtb > dtb-$(CONFIG_ARCH_VEXPRESS) += juno.dtb juno-r1.dtb > dtb-$(CONFIG_ARCH_VEXPRESS) += rtsm_ve-aemv8a.dtb > dtb-$(CONFIG_ARCH_VEXPRESS) += vexpress-v2f-1xv7-ca53x2.dtb > diff --git a/arch/arm64/boot/dts/arm/foundation-v8-gicv3.dts b/arch/arm64/boot/dts/arm/foundation-v8-gicv3.dts > new file mode 100644 > index 0000000..ecdbe98 > --- /dev/null > +++ b/arch/arm64/boot/dts/arm/foundation-v8-gicv3.dts > @@ -0,0 +1,30 @@ > +/* > + * ARM Ltd. > + * > + * ARMv8 Foundation model DTS (GICv3 configuration) > + */ > + > +#include "foundation-v8.dtsi" > + > +/ { > + gic: interrupt-controller@2f000000 { > + compatible = "arm,gic-v3"; > + #interrupt-cells = <3>; > + #address-cells = <2>; > + #size-cells = <2>; > + ranges; > + interrupt-controller; > + reg = <0x0 0x2f000000 0x0 0x10000>, > + <0x0 0x2f100000 0x0 0x200000>, > + <0x0 0x2c000000 0x0 0x2000>, > + <0x0 0x2c010000 0x0 0x2000>, > + <0x0 0x2c02f000 0x0 0x2000>; > + interrupts = <1 9 0xf04>; > + > + its: its@2f020000 { > + compatible = "arm,gic-v3-its"; > + msi-controller; > + reg = <0x0 0x2f020000 0x0 0x20000>; > + }; > + }; > +}; > Do you know if the ITS has any modelled device connected to it? Not very useful on its own, but you may want to use it as a way to inject IPIs (just kidding, don't do that!). M. -- Jazz is not dead. It just smells funny... -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html