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13e3a882bc
As most other CoreSight devices the replicator can use either of the
optional clocks. Document those optional clocks in the schema.
Additionally document the one-off case of Zynq-7000 platforms which uses
apb_pclk and two additional debug clocks.
Fixes: 3c15fddf31 ("dt-bindings: arm: Convert CoreSight bindings to DT schema")
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Link: https://lore.kernel.org/r/20250425-fix-nexus-4-v3-6-da4e39e86d41@oss.qualcomm.com
124 lines
3.3 KiB
YAML
124 lines
3.3 KiB
YAML
# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/arm/arm,coresight-static-replicator.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Arm CoreSight Static Trace Bus Replicator
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maintainers:
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- Mathieu Poirier <mathieu.poirier@linaro.org>
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- Mike Leach <mike.leach@linaro.org>
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- Leo Yan <leo.yan@linaro.org>
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- Suzuki K Poulose <suzuki.poulose@arm.com>
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description: |
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CoreSight components are compliant with the ARM CoreSight architecture
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specification and can be connected in various topologies to suit a particular
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SoCs tracing needs. These trace components can generally be classified as
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sinks, links and sources. Trace data produced by one or more sources flows
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through the intermediate links connecting the source to the currently selected
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sink.
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The Coresight replicator splits a single trace stream into two trace streams
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for systems that have more than one trace sink component.
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properties:
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compatible:
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const: arm,coresight-static-replicator
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power-domains:
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maxItems: 1
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clocks:
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minItems: 1
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maxItems: 3
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clock-names:
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oneOf:
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- items:
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- enum: [apb_pclk, atclk]
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- items: # Zynq-700
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- const: apb_pclk
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- const: dbg_trc
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- const: dbg_apb
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in-ports:
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$ref: /schemas/graph.yaml#/properties/ports
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additionalProperties: false
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properties:
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port:
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description: Input connection from CoreSight Trace bus
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$ref: /schemas/graph.yaml#/properties/port
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out-ports:
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$ref: /schemas/graph.yaml#/properties/ports
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patternProperties:
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'^port@[01]$':
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description: Output connections to CoreSight Trace bus
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$ref: /schemas/graph.yaml#/$defs/port-base
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unevaluatedProperties: false
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properties:
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endpoint:
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$ref: /schemas/graph.yaml#/$defs/endpoint-base
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unevaluatedProperties: false
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properties:
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filter-source:
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$ref: /schemas/types.yaml#/definitions/phandle
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description:
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phandle to the coresight trace source device matching the
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hard coded filtering for this port
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remote-endpoint: true
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required:
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- compatible
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- in-ports
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- out-ports
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additionalProperties: false
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examples:
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- |
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replicator {
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/*
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* non-configurable replicators don't show up on the
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* AMBA bus. As such no need to add "arm,primecell".
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*/
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compatible = "arm,coresight-static-replicator";
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out-ports {
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#address-cells = <1>;
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#size-cells = <0>;
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/* replicator output ports */
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port@0 {
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reg = <0>;
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replicator_out_port0: endpoint {
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remote-endpoint = <&etb_in_port>;
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filter-source = <&tpdm_video>;
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};
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};
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port@1 {
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reg = <1>;
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replicator_out_port1: endpoint {
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remote-endpoint = <&tpiu_in_port>;
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filter-source = <&tpdm_mdss>;
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};
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};
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};
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in-ports {
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port {
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replicator_in_port0: endpoint {
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remote-endpoint = <&funnel_out_port0>;
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};
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};
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};
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};
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...
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