arm,coresight-dynamic-replicator.yaml

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    1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
    2 %YAML 1.2
    3 ---
    4 $id: http://devicetree.org/schemas/arm/arm,coresight-dynamic-replicator.yaml#
    5 $schema: http://devicetree.org/meta-schemas/core.yaml#
    6 
    7 title: Arm Coresight Programmable Trace Bus Replicator
    8 
    9 maintainers:
   10   - Mathieu Poirier <mathieu.poirier@linaro.org>
   11   - Mike Leach <mike.leach@linaro.org>
   12   - Leo Yan <leo.yan@linaro.org>
   13   - Suzuki K Poulose <suzuki.poulose@arm.com>
   14 
   15 description: |
   16   CoreSight components are compliant with the ARM CoreSight architecture
   17   specification and can be connected in various topologies to suit a particular
   18   SoCs tracing needs. These trace components can generally be classified as
   19   sinks, links and sources. Trace data produced by one or more sources flows
   20   through the intermediate links connecting the source to the currently selected
   21   sink.
   22 
   23   The Coresight replicator splits a single trace stream into two trace streams
   24   for systems that have more than one trace sink component.
   25 
   26 # Need a custom select here or 'arm,primecell' will match on lots of nodes
   27 select:
   28   properties:
   29     compatible:
   30       contains:
   31         const: arm,coresight-dynamic-replicator
   32   required:
   33     - compatible
   34 
   35 allOf:
   36   - $ref: /schemas/arm/primecell.yaml#
   37 
   38 properties:
   39   compatible:
   40     items:
   41       - const: arm,coresight-dynamic-replicator
   42       - const: arm,primecell
   43 
   44   reg:
   45     maxItems: 1
   46 
   47   clocks:
   48     minItems: 1
   49     maxItems: 2
   50 
   51   clock-names:
   52     minItems: 1
   53     items:
   54       - const: apb_pclk
   55       - const: atclk
   56 
   57   qcom,replicator-loses-context:
   58     type: boolean
   59     description:
   60       Indicates that the replicator will lose register context when AMBA clock
   61       is removed which is observed in some replicator designs.
   62 
   63   in-ports:
   64     $ref: /schemas/graph.yaml#/properties/ports
   65     additionalProperties: false
   66 
   67     properties:
   68       port:
   69         description: Input connection from CoreSight Trace bus
   70         $ref: /schemas/graph.yaml#/properties/port
   71 
   72   out-ports:
   73     $ref: /schemas/graph.yaml#/properties/ports
   74 
   75     patternProperties:
   76       '^port(@[01])?$':
   77         description: Output connections to CoreSight Trace bus
   78         $ref: /schemas/graph.yaml#/properties/port
   79 
   80 required:
   81   - compatible
   82   - reg
   83   - clocks
   84   - clock-names
   85   - in-ports
   86   - out-ports
   87 
   88 unevaluatedProperties: false
   89 
   90 examples:
   91   - |
   92     replicator@20120000 {
   93         compatible = "arm,coresight-dynamic-replicator", "arm,primecell";
   94         reg = <0x20120000 0x1000>;
   95 
   96         clocks = <&soc_smc50mhz>;
   97         clock-names = "apb_pclk";
   98 
   99         out-ports {
  100             #address-cells = <1>;
  101             #size-cells = <0>;
  102 
  103             /* replicator output ports */
  104             port@0 {
  105                 reg = <0>;
  106                 replicator_out_port0: endpoint {
  107                     remote-endpoint = <&tpiu_in_port>;
  108                 };
  109             };
  110 
  111             port@1 {
  112                 reg = <1>;
  113                 replicator_out_port1: endpoint {
  114                     remote-endpoint = <&etr_in_port>;
  115                 };
  116             };
  117         };
  118         in-ports {
  119             port {
  120                 replicator_in_port0: endpoint {
  121                     remote-endpoint = <&csys2_funnel_out_port>;
  122                 };
  123             };
  124         };
  125     };
  126 ...

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sys/contrib/device-tree/Bindings/arm/arm,coresight-dynamic-replicator.yaml