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 7title: Arm Coresight Programmable Trace Bus Replicator 8 9maintainers: 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 15description: | 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 27select: 28 properties: 29 compatible: 30 contains: 31 const: arm,coresight-dynamic-replicator 32 required: 33 - compatible 34 35allOf: 36 - $ref: /schemas/arm/primecell.yaml# 37 38properties: 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 80required: 81 - compatible 82 - reg 83 - clocks 84 - clock-names 85 - in-ports 86 - out-ports 87 88unevaluatedProperties: false 89 90examples: 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... 127