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Add a new coresight-tnoc.yaml file to describe the bindings required to define Trace Network On Chip (TNOC) in device trees. TNOC is an integration hierarchy which is a hardware component that integrates the functionalities of TPDA and funnels. It collects trace form subsystems and transfers to coresight sink. Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Signed-off-by: Yuanfang Zhang <quic_yuanfang@quicinc.com> Reviewed-by: Mike Leach <mike.leach@linaro.org> Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> Link: https://lore.kernel.org/r/20250710-trace-noc-v11-1-f849075c40b8@quicinc.com
114 lines
2.5 KiB
YAML
114 lines
2.5 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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$id: http://devicetree.org/schemas/arm/qcom,coresight-tnoc.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Qualcomm Trace Network On Chip - TNOC
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maintainers:
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- Yuanfang Zhang <quic_yuanfang@quicinc.com>
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description: >
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The Trace Network On Chip (TNOC) is an integration hierarchy hardware
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component that integrates the functionalities of TPDA and funnels.
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It sits in the different subsystem of SOC and aggregates the trace and
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transports it to Aggregation TNOC or to coresight trace sink eventually.
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TNOC embeds bridges for all the interfaces APB, ATB, TPDA and NTS (Narrow
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Time Stamp).
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TNOC can take inputs from different trace sources i.e. ATB, TPDM.
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Note this binding is specifically intended for Aggregator TNOC instances.
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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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enum:
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- qcom,coresight-tnoc
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required:
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- compatible
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properties:
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$nodename:
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pattern: "^tn(@[0-9a-f]+)$"
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compatible:
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items:
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- const: qcom,coresight-tnoc
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- const: arm,primecell
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reg:
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maxItems: 1
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clock-names:
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items:
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- const: apb_pclk
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clocks:
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items:
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- description: APB register access clock
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in-ports:
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$ref: /schemas/graph.yaml#/properties/ports
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patternProperties:
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'^port(@[0-9a-f]{1,2})?$':
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description: Input connections 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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additionalProperties: false
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properties:
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port:
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description:
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Output connection 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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additionalProperties: false
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examples:
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- |
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tn@109ab000 {
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compatible = "qcom,coresight-tnoc", "arm,primecell";
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reg = <0x109ab000 0x4200>;
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clocks = <&aoss_qmp>;
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clock-names = "apb_pclk";
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in-ports {
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#address-cells = <1>;
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#size-cells = <0>;
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port@0 {
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reg = <0>;
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tn_ag_in_tpdm_gcc: endpoint {
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remote-endpoint = <&tpdm_gcc_out_tn_ag>;
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};
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};
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};
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out-ports {
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port {
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tn_ag_out_funnel_in1: endpoint {
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remote-endpoint = <&funnel_in1_in_tn_ag>;
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};
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};
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};
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};
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...
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