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    Subject[PATCH v3 2/2] ARC: Add documentation on DT binding for ARC700 PMU
    Date
    Signed-off-by: Mischa Jonker <mjonker@synopsys.com>
    ---
    Documentation/devicetree/bindings/arc/pmu.txt | 24 ++++++++++++++++++++++++
    1 file changed, 24 insertions(+)
    create mode 100644 Documentation/devicetree/bindings/arc/pmu.txt

    diff --git a/Documentation/devicetree/bindings/arc/pmu.txt b/Documentation/devicetree/bindings/arc/pmu.txt
    new file mode 100644
    index 0000000..49d5173
    --- /dev/null
    +++ b/Documentation/devicetree/bindings/arc/pmu.txt
    @@ -0,0 +1,24 @@
    +* ARC Performance Monitor Unit
    +
    +The ARC 700 can be configured with a pipeline performance monitor for counting
    +CPU and cache events like cache misses and hits.
    +
    +Note that:
    + * ARC 700 refers to a family of ARC processor cores;
    + - There is only one type of PMU available for the whole family;
    + - The PMU may support different sets of events; supported events are probed
    + at boot time, as required by the reference manual.
    +
    + * The ARC 700 PMU does not support interrupts; although HW events may be
    + counted, the HW events themselves cannot serve as a trigger for a sample.
    +
    +Required properties:
    +
    +- compatible : should contain
    + "snps,arc700-pmu"
    +
    +Example:
    +
    +pmu {
    + compatible = "snps,arc700-pmu";
    +};
    --
    1.7.9.5


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