# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
# Copyright 2020 Arm Ltd.
%YAML 1.2
---
$id:
http://devicetree.org/schemas/perf/arm,cmn.yaml#
$schema:
http://devicetree.org/meta-schemas/core.yaml#
title: Arm CMN (Coherent Mesh Network) Performance Monitors
maintainers:
- Robin Murphy <robin.murphy@arm.com>
properties:
compatible:
enum:
- arm,cmn-600
- arm,cmn-650
- arm,cmn-700
- arm,cmn-s3
- arm,ci-700
reg:
items:
- description: Physical address of the base (PERIPHBASE) and
size of the configuration address space.
interrupts:
minItems: 1
items:
- description: Overflow interrupt for DTC0
- description: Overflow interrupt for DTC1
- description: Overflow interrupt for DTC2
- description: Overflow interrupt for DTC3
description: One interrupt for each DTC domain implemented must
be specified, in order. DTC0 is always present.
arm,root-node:
$ref: /schemas/types.yaml#/definitions/uint32
description: Offset from PERIPHBASE of CMN-600's configuration
discovery node (see TRM definition of ROOTNODEBASE). Not
relevant for newer CMN/CI products.
required:
- compatible
- reg
- interrupts
if:
properties:
compatible:
contains:
const: arm,cmn-600
then:
required:
- arm,root-node
additionalProperties: false
examples:
- |
#include <dt-bindings/interrupt-controller/arm-gic.h>
#include <dt-bindings/interrupt-controller/irq.h>
pmu@50000000 {
compatible = "arm,cmn-600";
reg = <0x50000000 0x4000000>;
/* 4x2 mesh with one DTC, and CFG node at 0,1,1,0 */
interrupts = <GIC_SPI 46 IRQ_TYPE_LEVEL_HIGH>;
arm,root-node = <0x104000>;
};
...
