1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) 2%YAML 1.2 3--- 4$id: http://devicetree.org/schemas/perf/spe-pmu.yaml# 5$schema: http://devicetree.org/meta-schemas/core.yaml# 6 7title: ARMv8.2 Statistical Profiling Extension (SPE) Performance Monitor Units (PMU) 8 9maintainers: 10 - Will Deacon <will@kernel.org> 11 12description: 13 ARMv8.2 introduces the optional Statistical Profiling Extension for collecting 14 performance sample data using an in-memory trace buffer. 15 16properties: 17 compatible: 18 const: arm,statistical-profiling-extension-v1 19 20 interrupts: 21 maxItems: 1 22 description: | 23 The PPI to signal SPE events. For heterogeneous systems where SPE is only 24 supported on a subset of the CPUs, please consult the arm,gic-v3 binding 25 for details on describing a PPI partition. 26 27additionalProperties: false 28 29required: 30 - compatible 31 - interrupts 32 33examples: 34 - | 35 #include <dt-bindings/interrupt-controller/arm-gic.h> 36 37 spe-pmu { 38 compatible = "arm,statistical-profiling-extension-v1"; 39 interrupts = <GIC_PPI 5 IRQ_TYPE_LEVEL_HIGH>; 40 }; 41