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Groups > linux.kernel > #1706401
| From | Suzuki K Poulose <suzuki.poulose@arm.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH v5 5/6] dt-bindings: Document devicetree binding for ARM DSU PMU |
| Date | 2017-08-08 13:40 +0200 |
| Message-ID | <ucb1E-7Kd-33@gated-at.bofh.it> (permalink) |
| References | <ucb1D-7Kd-5@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
This patch documents the devicetree bindings for ARM DSU PMU.
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Rob Herring <robh@kernel.org>
Cc: devicetree@vger.kernel.org
Cc: frowand.list@gmail.com
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
---
Changes since V3:
- Fixed node name in the example, suggested by Rob
---
.../devicetree/bindings/arm/arm-dsu-pmu.txt | 27 ++++++++++++++++++++++
1 file changed, 27 insertions(+)
create mode 100644 Documentation/devicetree/bindings/arm/arm-dsu-pmu.txt
diff --git a/Documentation/devicetree/bindings/arm/arm-dsu-pmu.txt b/Documentation/devicetree/bindings/arm/arm-dsu-pmu.txt
new file mode 100644
index 0000000..6efabba
--- /dev/null
+++ b/Documentation/devicetree/bindings/arm/arm-dsu-pmu.txt
@@ -0,0 +1,27 @@
+* ARM DynamIQ Shared Unit (DSU) Performance Monitor Unit (PMU)
+
+ARM DyanmIQ Shared Unit (DSU) integrates one or more CPU cores
+with a shared L3 memory system, control logic and external interfaces to
+form a multicore cluster. The PMU enables to gather various statistics on
+the operations of the DSU. The PMU provides independent 32bit counters that
+can count any of the supported events, along with a 64bit cycle counter.
+The PMU is accessed via CPU system registers and has no MMIO component.
+
+** DSU PMU required properties:
+
+- compatible : should be one of :
+
+ "arm,dsu-pmu"
+
+- interrupts : Exactly 1 SPI must be listed.
+
+- cpus : List of phandles for the CPUs connected to this DSU instance.
+
+
+** Example:
+
+dsu-pmu-0 {
+ compatible = "arm,dsu-pmu";
+ interrupts = <GIC_SPI 02 IRQ_TYPE_LEVEL_HIGH>;
+ cpus = <&cpu_0>, <&cpu_1>;
+};
--
2.7.5
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[PATCH v5 5/6] dt-bindings: Document devicetree binding for ARM DSU PMU Suzuki K Poulose <suzuki.poulose@arm.com> - 2017-08-08 13:40 +0200
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