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    Subject[PATCH 7/7] dt-bindings/gic-v3: Add documentation for MBI support
    Date
    Add the required properties to support the MBI feature on GICv3.

    Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
    ---
    .../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;
    --
    2.14.2
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