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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-dynamic-replicator.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Arm Coresight Programmable Trace Bus Replicator
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 replicator splits a single trace stream into two trace streams
for systems that have more than one trace sink component.
# Need a custom select here or 'arm,primecell' will match on lots of nodes
select:
properties:
compatible:
contains:
const: arm,coresight-dynamic-replicator
required:
- compatible
allOf:
- $ref: /schemas/arm/primecell.yaml#
properties:
compatible:
items:
- const: arm,coresight-dynamic-replicator
- const: arm,primecell
reg:
maxItems: 1
clocks:
minItems: 1
maxItems: 2
clock-names:
minItems: 1
items:
- const: apb_pclk
- const: atclk
qcom,replicator-loses-context:
type: boolean
description:
Indicates that the replicator will lose register context when AMBA clock
is removed which is observed in some replicator designs.
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
out-ports:
$ref: /schemas/graph.yaml#/properties/ports
patternProperties:
'^port(@[01])?$':
description: Output connections to CoreSight Trace bus
$ref: /schemas/graph.yaml#/properties/port
required:
- compatible
- reg
- clocks
- clock-names
- in-ports
- out-ports
unevaluatedProperties: false
examples:
- |
replicator@20120000 {
compatible = "arm,coresight-dynamic-replicator", "arm,primecell";
reg = <0x20120000 0x1000>;
clocks = <&soc_smc50mhz>;
clock-names = "apb_pclk";
out-ports {
#address-cells = <1>;
#size-cells = <0>;
/* replicator output ports */
port@0 {
reg = <0>;
replicator_out_port0: endpoint {
remote-endpoint = <&tpiu_in_port>;
};
};
port@1 {
reg = <1>;
replicator_out_port1: endpoint {
remote-endpoint = <&etr_in_port>;
};
};
};
in-ports {
port {
replicator_in_port0: endpoint {
remote-endpoint = <&csys2_funnel_out_port>;
};
};
};
};
...
|
