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    Subject[PATCH v4 5/5] dt-bindings: Document devicetree binding for ARM SPE
    Date
    This patch documents the devicetree binding in use for ARM SPE.

    Cc: Mark Rutland <mark.rutland@arm.com>
    Cc: Rob Herring <robh@kernel.org>
    Signed-off-by: Will Deacon <will.deacon@arm.com>
    ---
    Documentation/devicetree/bindings/arm/spe-pmu.txt | 20 ++++++++++++++++++++
    1 file changed, 20 insertions(+)
    create mode 100644 Documentation/devicetree/bindings/arm/spe-pmu.txt

    diff --git a/Documentation/devicetree/bindings/arm/spe-pmu.txt b/Documentation/devicetree/bindings/arm/spe-pmu.txt
    new file mode 100644
    index 000000000000..93372f2a7df9
    --- /dev/null
    +++ b/Documentation/devicetree/bindings/arm/spe-pmu.txt
    @@ -0,0 +1,20 @@
    +* ARMv8.2 Statistical Profiling Extension (SPE) Performance Monitor Units (PMU)
    +
    +ARMv8.2 introduces the optional Statistical Profiling Extension for collecting
    +performance sample data using an in-memory trace buffer.
    +
    +** SPE Required properties:
    +
    +- compatible : should be one of:
    + "arm,statistical-profiling-extension-v1"
    +
    +- interrupts : Exactly 1 PPI must be listed. For heterogeneous systems where
    + SPE is only supported on a subset of the CPUs, please consult
    + the arm,gic-v3 binding for details on describing a PPI partition.
    +
    +** Example:
    +
    +spe-pmu {
    + compatible = "arm,statistical-profiling-extension-v1";
    + interrupts = <GIC_PPI 05 IRQ_TYPE_LEVEL_HIGH &part1>;
    +};
    --
    2.1.4
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