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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/perf/spe-pmu.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: ARMv8.2 Statistical Profiling Extension (SPE) Performance Monitor Units (PMU)
maintainers:
- Will Deacon <will@kernel.org>
description:
ARMv8.2 introduces the optional Statistical Profiling Extension for collecting
performance sample data using an in-memory trace buffer.
properties:
compatible:
const: arm,statistical-profiling-extension-v1
interrupts:
maxItems: 1
description: |
The PPI to signal SPE events. 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.
additionalProperties: false
required:
- compatible
- interrupts
examples:
- |
#include <dt-bindings/interrupt-controller/arm-gic.h>
spe-pmu {
compatible = "arm,statistical-profiling-extension-v1";
interrupts = <GIC_PPI 5 IRQ_TYPE_LEVEL_HIGH>;
};
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