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+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/arm/qcom,coresight-tnoc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm Ttrace NOC(Network On Chip)
+
+maintainers:
+ - yuanfang Zhang <quic_yuanfang@quicinc.com>
+
+description:
+ The Trace NoC is an integration hierarchy which is a replacement of Dragonlink tile configuration.
+ It brings together debug component like TPDA, funnel and interconnect Trace Noc which collects trace
+ from subsystems and transfers to QDSS sink.
+
+ It sits in the different subsystem of SOC and aggregates the trace and transports it to Aggregation TNoC
+ or to QDSS trace sink eventually. Trace NoC embeds bridges for all the interfaces(APB, ATB, QPMDA & NTS).
+
+ Trace NoC can take inputs from different trace sources i.e. ATB, QPMDA.
+
+# Need a custom select here or 'arm,primecell' will match on lots of nodes
+select:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - qcom,coresight-tnoc
+ required:
+ - compatible
+
+properties:
+ $nodename:
+ pattern: "^tn(@[0-9a-f]+)$"
+ compatible:
+ items:
+ - const: qcom,coresight-tnoc
+ - const: arm,primecell
+
+ reg:
+ minItems: 1
+ maxItems: 2
+
+ clocks:
+ maxItems: 1
+
+ clock-names:
+ items:
+ - const: apb_pclk
+
+ in-ports:
+ description: |
+ Input connections from subsystem to TNoC
+ $ref: /schemas/graph.yaml#/properties/ports
+
+ out-ports:
+ description: |
+ Output connections from the TNoC to Aggreg TNoC or to legacy CoreSight trace bus.
+ $ref: /schemas/graph.yaml#/properties/ports
+
+ properties:
+ port:
+ description: |
+ Output connections from the TNoC to Aggreg TNoC or to legacy CoreSight trace bus.
+ $ref: /schemas/graph.yaml#/properties/port
+
+required:
+ - compatible
+ - reg
+ - clocks
+ - clock-names
+ - in-ports
+ - out-ports
+
+additionalProperties: false
+
+examples:
+ - |
+ tn@109ab000 {
+ compatible = "qcom,coresight-tnoc", "arm,primecell";
+ reg = <0x0 0x109ab000 0x0 0x4200>;
+
+ clocks = <&aoss_qmp>;
+ clock-names = "apb_pclk";
+
+ in-ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@0 {
+ reg = <0>;
+
+ tn_ag_in_tpdm_gcc: endpoint {
+ remote-endpoint = <&tpdm_gcc_out_tn_ag>;
+ };
+ };
+ };
+
+ out-ports {
+ port {
+ tn_ag_out_funnel_in1: endpoint {
+ remote-endpoint = <&funnel_in1_in_tn_ag>;
+ };
+ };
+ };
+ };
+...
Adds new coresight-tnoc.yaml file describing the bindings required to define Trace NOC in the device trees. Signed-off-by: Yuanfang Zhang <quic_yuanfang@quicinc.com> --- .../bindings/arm/qcom,coresight-tnoc.yaml | 107 +++++++++++++++++++++ 1 file changed, 107 insertions(+)