# SPDX-License-Identifier: GPL-2.0-only or BSD-2-Clause # Copyright 2021, Arm Ltd %YAML 1.2 --- $id: "http://devicetree.org/schemas/arm/trbe.yaml#" $schema: "http://devicetree.org/meta-schemas/core.yaml#" title: ARM Trace Buffer Extensions maintainers: - Anshuman Khandual description: | Arm Trace Buffer Extension (TRBE) is a per CPU component for storing trace generated on the CPU to memory. It is accessed via CPU system registers. The software can verify if it is permitted to use the component by checking the TRBIDR register. properties: $nodename: const: "trbe" compatible: items: - const: arm,trace-buffer-extension interrupts: description: | Exactly 1 PPI must be listed. For heterogeneous systems where TRBE is only supported on a subset of the CPUs, please consult the arm,gic-v3 binding for details on describing a PPI partition. maxItems: 1 required: - compatible - interrupts additionalProperties: false examples: - | #include trbe { compatible = "arm,trace-buffer-extension"; interrupts = ; }; ...