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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-tpiu.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Arm CoreSight Trace Port Interface Unit
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 Trace Port Interface Unit captures trace data from the trace bus
and outputs it to an external trace port.
# Need a custom select here or 'arm,primecell' will match on lots of nodes
select:
properties:
compatible:
contains:
const: arm,coresight-tpiu
required:
- compatible
allOf:
- $ref: /schemas/arm/primecell.yaml#
properties:
compatible:
items:
- const: arm,coresight-tpiu
- 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 the CoreSight Trace bus.
$ref: /schemas/graph.yaml#/properties/port
required:
- compatible
- reg
- clocks
- clock-names
- in-ports
unevaluatedProperties: false
examples:
- |
tpiu@e3c05000 {
compatible = "arm,coresight-tpiu", "arm,primecell";
reg = <0xe3c05000 0x1000>;
clocks = <&clk_375m>;
clock-names = "apb_pclk";
in-ports {
port {
tpiu_in_port: endpoint {
remote-endpoint = <&funnel4_out_port0>;
};
};
};
};
...
|
