1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) 2 # Copyright 2021 Arm Ltd. 3 %YAML 1.2 4 --- 5 $id: http://devicetree.org/schemas/perf/arm,dsu-pmu.yaml# 6 $schema: http://devicetree.org/meta-schemas/core.yaml# 7 8 title: ARM DynamIQ Shared Unit (DSU) Performance Monitor Unit (PMU) 9 10 maintainers: 11 - Suzuki K Poulose <suzuki.poulose@arm.com> 12 - Robin Murphy <robin.murphy@arm.com> 13 14 description: 15 ARM DynamIQ Shared Unit (DSU) integrates one or more CPU cores with a shared 16 L3 memory system, control logic and external interfaces to form a multicore 17 cluster. The PMU enables gathering various statistics on the operation of the 18 DSU. The PMU provides independent 32-bit counters that can count any of the 19 supported events, along with a 64-bit cycle counter. The PMU is accessed via 20 CPU system registers and has no MMIO component. 21 22 properties: 23 compatible: 24 oneOf: 25 - const: arm,dsu-pmu 26 - items: 27 - const: arm,dsu-110-pmu 28 - const: arm,dsu-pmu 29 30 interrupts: 31 items: 32 - description: nCLUSTERPMUIRQ interrupt 33 34 cpus: 35 minItems: 1 36 maxItems: 12 37 description: List of phandles for the CPUs connected to this DSU instance. 38 39 required: 40 - compatible 41 - interrupts 42 - cpus 43 44 additionalProperties: false
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