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Current name of coresight component's folder consists of prefix of the device and the id in the device list. When run 'ls' command, we can get the register address of the device. Take CTI for example, if we want to set the config for modem CTI, but we can't know which CTI is modem CTI from all current information. cti_sys0 -> ../../../devices/platform/soc@0/138f0000.cti/cti_sys0 cti_sys1 -> ../../../devices/platform/soc@0/13900000.cti/cti_sys1 Add label to show hardware context information of each coresight device. There will be a sysfs node label in each device folder. cat /sys/bus/coresight/devices/cti_sys0/label Signed-off-by: Mao Jinlong <quic_jinlmao@quicinc.com> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Reviewed-by: Mike Leach <mike.leach@linaro.org> Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> Link: https://lore.kernel.org/r/20250816072529.3716968-2-quic_jinlmao@quicinc.com
129 lines
3.4 KiB
YAML
129 lines
3.4 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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label:
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description:
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Description of a coresight device.
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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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