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[66.90.148.213]) by smtp.gmail.com with ESMTPSA id b9sm4276424otp.46.2021.08.31.14.16.03 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 31 Aug 2021 14:16:03 -0700 (PDT) Received: (nullmailer pid 659825 invoked by uid 1000); Tue, 31 Aug 2021 21:16:02 -0000 Date: Tue, 31 Aug 2021 16:16:02 -0500 From: Rob Herring To: Mark Kettenis Cc: devicetree@vger.kernel.org, alyssa@rosenzweig.io, Mark Kettenis , Thomas Gleixner , Marc Zyngier , Hector Martin , Bjorn Helgaas , Jim Quinlan , Nicolas Saenz Julienne , Florian Fainelli , bcm-kernel-feedback-list@broadcom.com, Daire McNamara , Saenz Julienne , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-pci@vger.kernel.org, linux-rpi-kernel@lists.infradead.org Subject: Re: [PATCH v4 2/4] dt-bindings: interrupt-controller: msi: Add msi-ranges property Message-ID: References: <20210827171534.62380-1-mark.kettenis@xs4all.nl> <20210827171534.62380-3-mark.kettenis@xs4all.nl> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210827171534.62380-3-mark.kettenis@xs4all.nl> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Aug 27, 2021 at 07:15:27PM +0200, Mark Kettenis wrote: > From: Mark Kettenis > > Update the MSI controller binding to add an msi-ranges property > that specifies how MSIs map onto regular interrupts on some other > interrupt controller. > > Signed-off-by: Mark Kettenis > --- > .../bindings/interrupt-controller/msi-controller.yaml | 8 ++++++++ > 1 file changed, 8 insertions(+) > > diff --git a/Documentation/devicetree/bindings/interrupt-controller/msi-controller.yaml b/Documentation/devicetree/bindings/interrupt-controller/msi-controller.yaml > index 5ed6cd46e2e0..bf8b8a7dba09 100644 > --- a/Documentation/devicetree/bindings/interrupt-controller/msi-controller.yaml > +++ b/Documentation/devicetree/bindings/interrupt-controller/msi-controller.yaml > @@ -31,4 +31,12 @@ properties: > Identifies the node as an MSI controller. > $ref: /schemas/types.yaml#/definitions/flag > > + msi-ranges: > + description: > + A list of pairs , where "intid" is the specification It's not really 'pairs' and 'interrupt specifier' is the terminology the spec uses. How about: A list of , where "phandle" is parent interrupt controller, "intspec" is the starting/base interrupt specifier, and "span" is the size of that range (typically multiples of 32). The 'multiples of 32' part is what Marc told me. > + of the first interrupt (including the phandle for the interrupt > + controller) that can be used as an MSI, and "span" the size of > + that range. Multiple ranges can be provided. > + $ref: /schemas/types.yaml#/definitions/phandle-array > + > additionalProperties: true > -- > 2.32.0 > >