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1# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause2# Copyright 2021, Arm Ltd3%YAML 1.24---5$id: http://devicetree.org/schemas/arm/arm,trace-buffer-extension.yaml#6$schema: http://devicetree.org/meta-schemas/core.yaml#7 8title: ARM Trace Buffer Extensions9 10maintainers:11 - Anshuman Khandual <anshuman.khandual@arm.com>12 13description: |14 Arm Trace Buffer Extension (TRBE) is a per CPU component15 for storing trace generated on the CPU to memory. It is16 accessed via CPU system registers. The software can verify17 if it is permitted to use the component by checking the18 TRBIDR register.19 20properties:21 $nodename:22 const: trbe23 24 compatible:25 items:26 - const: arm,trace-buffer-extension27 28 interrupts:29 description: |30 Exactly 1 PPI must be listed. For heterogeneous systems where31 TRBE is only supported on a subset of the CPUs, please consult32 the arm,gic-v3 binding for details on describing a PPI partition.33 maxItems: 134 35required:36 - compatible37 - interrupts38 39additionalProperties: false40 41examples:42 43 - |44 #include <dt-bindings/interrupt-controller/arm-gic.h>45 46 trbe {47 compatible = "arm,trace-buffer-extension";48 interrupts = <GIC_PPI 15 IRQ_TYPE_LEVEL_HIGH>;49 };50...51