8559e62ccb
Coresight components may be in a power domain which is the case for the Arm Juno board. Allow a single 'power-domains' entry for Coresight components. Signed-off-by: Rob Herring <robh@kernel.org> Reviewed-by: Sudeep Holla <sudeep.holla@arm.com> Link: https://lore.kernel.org/r/20220721212718.1980905-1-robh@kernel.org Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
130 lines
3.2 KiB
YAML
130 lines
3.2 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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$id: http://devicetree.org/schemas/arm/arm,coresight-dynamic-replicator.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Arm Coresight Programmable 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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# Need a custom select here or 'arm,primecell' will match on lots of nodes
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select:
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properties:
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compatible:
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contains:
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const: arm,coresight-dynamic-replicator
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required:
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- compatible
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allOf:
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- $ref: /schemas/arm/primecell.yaml#
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properties:
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compatible:
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items:
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- const: arm,coresight-dynamic-replicator
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- const: arm,primecell
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reg:
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maxItems: 1
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clocks:
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minItems: 1
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maxItems: 2
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clock-names:
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minItems: 1
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items:
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- const: apb_pclk
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- const: atclk
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power-domains:
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maxItems: 1
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qcom,replicator-loses-context:
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type: boolean
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description:
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Indicates that the replicator will lose register context when AMBA clock
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is removed which is observed in some replicator designs.
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in-ports:
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$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#/properties/port
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required:
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- compatible
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- reg
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- clocks
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- clock-names
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- in-ports
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- out-ports
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unevaluatedProperties: false
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examples:
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- |
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replicator@20120000 {
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compatible = "arm,coresight-dynamic-replicator", "arm,primecell";
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reg = <0x20120000 0x1000>;
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clocks = <&soc_smc50mhz>;
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clock-names = "apb_pclk";
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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 = <&tpiu_in_port>;
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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 = <&etr_in_port>;
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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 = <&csys2_funnel_out_port>;
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};
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};
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};
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};
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...
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