From mboxrd@z Thu Jan 1 00:00:00 1970 From: Rob Herring Subject: Re: [PATCH 5/5] DT: arm,gic-v3: Documment PPI partition support Date: Tue, 12 Apr 2016 11:29:37 -0500 Message-ID: <20160412162937.GA25932@rob-hp-laptop> References: <1460365075-7316-1-git-send-email-marc.zyngier@arm.com> <1460365075-7316-6-git-send-email-marc.zyngier@arm.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline In-Reply-To: <1460365075-7316-6-git-send-email-marc.zyngier-5wv7dgnIgG8@public.gmane.org> Sender: devicetree-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Marc Zyngier Cc: Thomas Gleixner , Jiang Liu , Jason Cooper , Will Deacon , Mark Rutland , linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: devicetree@vger.kernel.org On Mon, Apr 11, 2016 at 09:57:55AM +0100, Marc Zyngier wrote: > Add a decription of the PPI partitioning support. > > Signed-off-by: Marc Zyngier > --- > .../bindings/interrupt-controller/arm,gic-v3.txt | 34 ++++++++++++++++++++-- > 1 file changed, 32 insertions(+), 2 deletions(-) > > diff --git a/Documentation/devicetree/bindings/interrupt-controller/arm,gic-v3.txt b/Documentation/devicetree/bindings/interrupt-controller/arm,gic-v3.txt > index 007a5b4..4c29cda 100644 > --- a/Documentation/devicetree/bindings/interrupt-controller/arm,gic-v3.txt > +++ b/Documentation/devicetree/bindings/interrupt-controller/arm,gic-v3.txt > @@ -11,6 +11,8 @@ Main node required properties: > - interrupt-controller : Identifies the node as an interrupt controller > - #interrupt-cells : Specifies the number of cells needed to encode an > interrupt source. Must be a single cell with a value of at least 3. > + If the system requires describing PPI affinity, then the value must > + be at least 4. You're winning for cell count... One alternative that would save adding a cell and keep it contained within would be just list the affinities in the GIC node in the form of ' ': ppi-affinity = <1 2 &cpu2 &cpu3>, <5 1 &cpu4>, ... This would be harder to parse though if you have a large number of PPIs with affinities. That said, I've got no real issue with this as is. Rob -- 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