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# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
%YAML 1.2
---
$id: http://devicetree.org/schemas/arm/arm,coresight-etb10.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Arm CoreSight Embedded Trace Buffer
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.
The CoreSight Embedded Trace Buffer stores traces in a dedicated SRAM that is
used as a circular buffer.
# Need a custom select here or 'arm,primecell' will match on lots of nodes
select:
properties:
compatible:
contains:
const: arm,coresight-etb10
required:
- compatible
allOf:
- $ref: /schemas/arm/primecell.yaml#
properties:
compatible:
items:
- const: arm,coresight-etb10
- const: arm,primecell
reg:
maxItems: 1
clocks:
minItems: 1
maxItems: 2
clock-names:
minItems: 1
items:
- const: apb_pclk
- const: atclk
power-domains:
maxItems: 1
in-ports:
$ref: /schemas/graph.yaml#/properties/ports
additionalProperties: false
properties:
port:
description: Input connection from CoreSight Trace bus.
$ref: /schemas/graph.yaml#/properties/port
required:
- compatible
- reg
- clocks
- clock-names
- in-ports
unevaluatedProperties: false
examples:
- |
etb@20010000 {
compatible = "arm,coresight-etb10", "arm,primecell";
reg = <0x20010000 0x1000>;
clocks = <&oscclk6a>;
clock-names = "apb_pclk";
in-ports {
port {
etb_in_port: endpoint {
remote-endpoint = <&replicator_out_port0>;
};
};
};
};
...
|
