mirror of
https://github.com/torvalds/linux.git
synced 2026-04-26 10:32:25 -04:00
2a0bc21927
The is some "magic" hard coded filtering in the replicators, which only passes through trace from a particular "source". Add a new property "filter-source" to label a phandle to the coresight trace source device matching the hard coded filtering for the port. Signed-off-by: Tao Zhang <quic_taozha@quicinc.com> Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> Link: https://lore.kernel.org/r/20241213100731.25914-2-quic_taozha@quicinc.com
112 lines
3.1 KiB
YAML
112 lines
3.1 KiB
YAML
# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
|
|
%YAML 1.2
|
|
---
|
|
$id: http://devicetree.org/schemas/arm/arm,coresight-static-replicator.yaml#
|
|
$schema: http://devicetree.org/meta-schemas/core.yaml#
|
|
|
|
title: Arm CoreSight Static 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.
|
|
|
|
properties:
|
|
compatible:
|
|
const: arm,coresight-static-replicator
|
|
|
|
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
|
|
|
|
out-ports:
|
|
$ref: /schemas/graph.yaml#/properties/ports
|
|
|
|
patternProperties:
|
|
'^port@[01]$':
|
|
description: Output connections to CoreSight Trace bus
|
|
$ref: /schemas/graph.yaml#/$defs/port-base
|
|
unevaluatedProperties: false
|
|
|
|
properties:
|
|
endpoint:
|
|
$ref: /schemas/graph.yaml#/$defs/endpoint-base
|
|
unevaluatedProperties: false
|
|
|
|
properties:
|
|
filter-source:
|
|
$ref: /schemas/types.yaml#/definitions/phandle
|
|
description:
|
|
phandle to the coresight trace source device matching the
|
|
hard coded filtering for this port
|
|
|
|
remote-endpoint: true
|
|
|
|
required:
|
|
- compatible
|
|
- in-ports
|
|
- out-ports
|
|
|
|
additionalProperties: false
|
|
|
|
examples:
|
|
- |
|
|
replicator {
|
|
/*
|
|
* non-configurable replicators don't show up on the
|
|
* AMBA bus. As such no need to add "arm,primecell".
|
|
*/
|
|
compatible = "arm,coresight-static-replicator";
|
|
|
|
out-ports {
|
|
#address-cells = <1>;
|
|
#size-cells = <0>;
|
|
|
|
/* replicator output ports */
|
|
port@0 {
|
|
reg = <0>;
|
|
replicator_out_port0: endpoint {
|
|
remote-endpoint = <&etb_in_port>;
|
|
filter-source = <&tpdm_video>;
|
|
};
|
|
};
|
|
|
|
port@1 {
|
|
reg = <1>;
|
|
replicator_out_port1: endpoint {
|
|
remote-endpoint = <&tpiu_in_port>;
|
|
filter-source = <&tpdm_mdss>;
|
|
};
|
|
};
|
|
};
|
|
|
|
in-ports {
|
|
port {
|
|
replicator_in_port0: endpoint {
|
|
remote-endpoint = <&funnel_out_port0>;
|
|
};
|
|
};
|
|
};
|
|
};
|
|
...
|