| # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) |
| # Copyright 2021 Arm Ltd. |
| %YAML 1.2 |
| --- |
| $id: http://devicetree.org/schemas/perf/arm,dsu-pmu.yaml# |
| $schema: http://devicetree.org/meta-schemas/core.yaml# |
| |
| title: ARM DynamIQ Shared Unit (DSU) Performance Monitor Unit (PMU) |
| |
| maintainers: |
| - Suzuki K Poulose <suzuki.poulose@arm.com> |
| - Robin Murphy <robin.murphy@arm.com> |
| |
| description: |
| ARM DynamIQ 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 gathering various statistics on the operation of the |
| DSU. The PMU provides independent 32-bit counters that can count any of the |
| supported events, along with a 64-bit cycle counter. The PMU is accessed via |
| CPU system registers and has no MMIO component. |
| |
| properties: |
| compatible: |
| oneOf: |
| - const: arm,dsu-pmu |
| - items: |
| - const: arm,dsu-110-pmu |
| - const: arm,dsu-pmu |
| |
| interrupts: |
| items: |
| - description: nCLUSTERPMUIRQ interrupt |
| |
| cpus: |
| $ref: /schemas/types.yaml#/definitions/phandle-array |
| minItems: 1 |
| maxItems: 12 |
| items: |
| maxItems: 1 |
| description: List of phandles for the CPUs connected to this DSU instance. |
| |
| required: |
| - compatible |
| - interrupts |
| - cpus |
| |
| additionalProperties: false |
