# SPDX-License-Identifier: GPL-2.0-only or BSD-2-Clause
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# Copyright 2021, Arm Ltd
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%YAML 1.2
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---
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$id: "http://devicetree.org/schemas/arm/trbe.yaml#"
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$schema: "http://devicetree.org/meta-schemas/core.yaml#"
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title: ARM Trace Buffer Extensions
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maintainers:
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- Anshuman Khandual <anshuman.khandual@arm.com>
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description: |
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Arm Trace Buffer Extension (TRBE) is a per CPU component
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for storing trace generated on the CPU to memory. It is
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accessed via CPU system registers. The software can verify
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if it is permitted to use the component by checking the
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TRBIDR register.
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properties:
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$nodename:
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const: "trbe"
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compatible:
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items:
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- const: arm,trace-buffer-extension
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interrupts:
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description: |
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Exactly 1 PPI must be listed. For heterogeneous systems where
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TRBE is only supported on a subset of the CPUs, please consult
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the arm,gic-v3 binding for details on describing a PPI partition.
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maxItems: 1
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required:
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- compatible
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- interrupts
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additionalProperties: false
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examples:
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- |
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#include <dt-bindings/interrupt-controller/arm-gic.h>
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trbe {
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compatible = "arm,trace-buffer-extension";
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interrupts = <GIC_PPI 15 IRQ_TYPE_LEVEL_HIGH>;
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};
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...
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