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49 lines
1.2 KiB
49 lines
1.2 KiB
# 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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$id: "http://devicetree.org/schemas/arm/arm,trace-buffer-extension.yaml#" |
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$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 <[email protected]> |
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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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