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@xxxxxxxxxxx> --- .../bindings/arm/qcom,coresight-tnoc.yaml | 107 +++++++++++++++++++++ 1 file changed, 107 insertions(+) diff --git a/Documentation/devicetree/bindings/arm/qcom,coresight-tnoc.yaml b/Documentation/devicetree/bindings/arm/qcom,coresight-tnoc.yaml new file mode 100644 index 0000000000000000000000000000000000000000..b8c1aaf014fb483fd960ec55d1193fb3f66136d2 --- /dev/null +++ b/Documentation/devicetree/bindings/arm/qcom,coresight-tnoc.yaml @@ -0,0 +1,107 @@ +# 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@xxxxxxxxxxx> + +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>; + }; + }; + }; + }; +... -- 2.34.1
