Documentation/devicetree/bindings/arm/qcom,coresight-remote-etm.yaml

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

File Facts

System
Linux kernel
Corpus path
Documentation/devicetree/bindings/arm/qcom,coresight-remote-etm.yaml
Extension
.yaml
Size
1355 bytes
Lines
56
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.

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Annotated Snippet

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

title: Qualcomm Coresight Remote ETM(Embedded Trace Macrocell)

maintainers:
  - Jinlong Mao <jinlong.mao@oss.qualcomm.com>
  - Tao Zhang <tao.zhang@oss.qualcomm.com>

description:
  Support for ETM trace collection on remote processor using coresight
  framework. Enabling this will allow turning on ETM tracing on remote
  processor like modem processor via sysfs and collecting the trace
  via coresight TMC sinks.

properties:
  compatible:
    const: qcom,coresight-remote-etm

  label:
    description:
      Description of a coresight device.

  out-ports:
    $ref: /schemas/graph.yaml#/properties/ports
    additionalProperties: false

    properties:
      port:
        description: Output connection to the CoreSight Trace bus.
        $ref: /schemas/graph.yaml#/properties/port

required:
  - compatible
  - out-ports

additionalProperties: false

examples:
  - |
    etm {
        compatible = "qcom,coresight-remote-etm";

        out-ports {
            port {
                modem_etm0_out_funnel_modem: endpoint {
                    remote-endpoint = <&funnel_modem_in_modem_etm0>;
                };
            };
        };
    };
...

Annotation

Implementation Notes