12d0b208bSRobin Murphy# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) 22d0b208bSRobin Murphy# Copyright 2021 Arm Ltd. 32d0b208bSRobin Murphy%YAML 1.2 42d0b208bSRobin Murphy--- 52d0b208bSRobin Murphy$id: http://devicetree.org/schemas/perf/arm,dsu-pmu.yaml# 62d0b208bSRobin Murphy$schema: http://devicetree.org/meta-schemas/core.yaml# 72d0b208bSRobin Murphy 82d0b208bSRobin Murphytitle: ARM DynamIQ Shared Unit (DSU) Performance Monitor Unit (PMU) 92d0b208bSRobin Murphy 102d0b208bSRobin Murphymaintainers: 112d0b208bSRobin Murphy - Suzuki K Poulose <suzuki.poulose@arm.com> 122d0b208bSRobin Murphy - Robin Murphy <robin.murphy@arm.com> 132d0b208bSRobin Murphy 142d0b208bSRobin Murphydescription: 152d0b208bSRobin Murphy ARM DynamIQ Shared Unit (DSU) integrates one or more CPU cores with a shared 162d0b208bSRobin Murphy L3 memory system, control logic and external interfaces to form a multicore 172d0b208bSRobin Murphy cluster. The PMU enables gathering various statistics on the operation of the 182d0b208bSRobin Murphy DSU. The PMU provides independent 32-bit counters that can count any of the 192d0b208bSRobin Murphy supported events, along with a 64-bit cycle counter. The PMU is accessed via 202d0b208bSRobin Murphy CPU system registers and has no MMIO component. 212d0b208bSRobin Murphy 222d0b208bSRobin Murphyproperties: 232d0b208bSRobin Murphy compatible: 24*1d7ecc80SRobin Murphy oneOf: 25*1d7ecc80SRobin Murphy - const: arm,dsu-pmu 26*1d7ecc80SRobin Murphy - items: 27*1d7ecc80SRobin Murphy - const: arm,dsu-110-pmu 28*1d7ecc80SRobin Murphy - const: arm,dsu-pmu 292d0b208bSRobin Murphy 302d0b208bSRobin Murphy interrupts: 312d0b208bSRobin Murphy items: 322d0b208bSRobin Murphy - description: nCLUSTERPMUIRQ interrupt 332d0b208bSRobin Murphy 342d0b208bSRobin Murphy cpus: 352d0b208bSRobin Murphy minItems: 1 36*1d7ecc80SRobin Murphy maxItems: 12 372d0b208bSRobin Murphy description: List of phandles for the CPUs connected to this DSU instance. 382d0b208bSRobin Murphy 392d0b208bSRobin Murphyrequired: 402d0b208bSRobin Murphy - compatible 412d0b208bSRobin Murphy - interrupts 422d0b208bSRobin Murphy - cpus 432d0b208bSRobin Murphy 442d0b208bSRobin MurphyadditionalProperties: false 45