Commit-ID: 53667c670fe00d63246fb3cfb4480bb1ba247bcc Gitweb: https://git.kernel.org/tip/53667c670fe00d63246fb3cfb4480bb1ba247bcc Author: Marc Zyngier <[email protected]> AuthorDate: Tue, 8 May 2018 13:14:38 +0100 Committer: Thomas Gleixner <[email protected]> CommitDate: Sun, 13 May 2018 15:59:02 +0200
dt-bindings/gic-v3: Add documentation for MBI support Add the required properties to support the MBI feature on GICv3. Signed-off-by: Marc Zyngier <[email protected]> Signed-off-by: Thomas Gleixner <[email protected]> Cc: Rob Herring <[email protected]> Cc: Jason Cooper <[email protected]> Cc: Ard Biesheuvel <[email protected]> Cc: Srinivas Kandagatla <[email protected]> Cc: Thomas Petazzoni <[email protected]> Cc: Miquel Raynal <[email protected]> Link: https://lkml.kernel.org/r/[email protected] --- .../bindings/interrupt-controller/arm,gic-v3.txt | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/Documentation/devicetree/bindings/interrupt-controller/arm,gic-v3.txt b/Documentation/devicetree/bindings/interrupt-controller/arm,gic-v3.txt index 0a57f2f4167d..3ea78c4ef887 100644 --- a/Documentation/devicetree/bindings/interrupt-controller/arm,gic-v3.txt +++ b/Documentation/devicetree/bindings/interrupt-controller/arm,gic-v3.txt @@ -57,6 +57,20 @@ Optional occupied by the redistributors. Required if more than one such region is present. +- msi-controller: Boolean property. Identifies the node as an MSI + controller. Only present if the Message Based Interrupt + functionnality is being exposed by the HW, and the mbi-ranges + property present. + +- mbi-ranges: A list of pairs <intid span>, where "intid" is the first + SPI of a range that can be used an MBI, and "span" the size of that + range. Multiple ranges can be provided. Requires "msi-controller" to + be set. + +- mbi-alias: Address property. Base address of an alias of the GICD + region containing only the {SET,CLR}SPI registers to be used if + isolation is required, and if supported by the HW. + Sub-nodes: PPI affinity can be expressed as a single "ppi-partitions" node, @@ -99,6 +113,9 @@ Examples: <0x0 0x2c020000 0 0x2000>; // GICV interrupts = <1 9 4>; + msi-controller; + mbi-ranges = <256 128>; + gic-its@2c200000 { compatible = "arm,gic-v3-its"; msi-controller;
