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author | Mischa Jonker <mjonker@synopsys.com> | 2013-11-07 17:55:12 +0400 |
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committer | Vineet Gupta <vgupta@synopsys.com> | 2013-11-12 08:15:56 +0400 |
commit | d6a7f73db712a11b1c30b2566758de65b308da73 (patch) | |
tree | 7448159922746b61e0f4a9ee00a2456398ad688f | |
parent | 0dd450fe13da4aeacc69916ecfe39d3d0b531900 (diff) | |
download | linux-d6a7f73db712a11b1c30b2566758de65b308da73.tar.xz |
ARC: Add documentation on DT binding for ARC700 PMU
Signed-off-by: Mischa Jonker <mjonker@synopsys.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
-rw-r--r-- | Documentation/devicetree/bindings/arc/pmu.txt | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/arc/pmu.txt b/Documentation/devicetree/bindings/arc/pmu.txt new file mode 100644 index 000000000000..49d517340de3 --- /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"; +}; |