Documentation/devicetree/bindings/arm/arm,coresight-tmc.yaml

Source file repositories/reference/linux-study-clean/Documentation/devicetree/bindings/arm/arm,coresight-tmc.yaml

File Facts

System
Linux kernel
Corpus path
Documentation/devicetree/bindings/arm/arm,coresight-tmc.yaml
Extension
.yaml
Size
4764 bytes
Lines
171
Domain
Support Tooling And Documentation
Bucket
Documentation
Inferred role
Support Tooling And Documentation: configuration, schema, or hardware description
Status
atlas-only

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

Dependency Surface

Detected Declarations

Annotated Snippet

# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
%YAML 1.2
---
$id: http://devicetree.org/schemas/arm/arm,coresight-tmc.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Arm CoreSight Trace Memory Controller

maintainers:
  - Mathieu Poirier <mathieu.poirier@linaro.org>
  - Mike Leach <mike.leach@linaro.org>
  - Leo Yan <leo.yan@linaro.org>
  - Suzuki K Poulose <suzuki.poulose@arm.com>

description: |
  CoreSight components are compliant with the ARM CoreSight architecture
  specification and can be connected in various topologies to suit a particular
  SoCs tracing needs. These trace components can generally be classified as
  sinks, links and sources. Trace data produced by one or more sources flows
  through the intermediate links connecting the source to the currently selected
  sink.

  Trace Memory Controller is used for Embedded Trace Buffer(ETB), Embedded Trace
  FIFO(ETF) and Embedded Trace Router(ETR) configurations. The configuration
  mode (ETB, ETF, ETR) is discovered at boot time when the device is probed.

# Need a custom select here or 'arm,primecell' will match on lots of nodes
select:
  properties:
    compatible:
      contains:
        const: arm,coresight-tmc
  required:
    - compatible

allOf:
  - $ref: /schemas/arm/primecell.yaml#

properties:
  compatible:
    items:
      - const: arm,coresight-tmc
      - const: arm,primecell

  reg:
    maxItems: 1

  clocks:
    minItems: 1
    maxItems: 2

  clock-names:
    minItems: 1
    items:
      - const: apb_pclk
      - const: atclk

  label:
    description:
      Description of a coresight device.

  iommus:
    maxItems: 1

  power-domains:
    maxItems: 1

  arm,buffer-size:
    $ref: /schemas/types.yaml#/definitions/uint32
    deprecated: true

Annotation

Implementation Notes