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Linux kernel mirror (for testing)
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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
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 power-domains:
58 maxItems: 1
59
60 qcom,replicator-loses-context:
61 type: boolean
62 description:
63 Indicates that the replicator will lose register context when AMBA clock
64 is removed which is observed in some replicator designs.
65
66 in-ports:
67 $ref: /schemas/graph.yaml#/properties/ports
68 additionalProperties: false
69
70 properties:
71 port:
72 description: Input connection from CoreSight Trace bus
73 $ref: /schemas/graph.yaml#/properties/port
74
75 out-ports:
76 $ref: /schemas/graph.yaml#/properties/ports
77
78 patternProperties:
79 '^port(@[01])?$':
80 description: Output connections to CoreSight Trace bus
81 $ref: /schemas/graph.yaml#/properties/port
82
83required:
84 - compatible
85 - reg
86 - clocks
87 - clock-names
88 - in-ports
89 - out-ports
90
91unevaluatedProperties: false
92
93examples:
94 - |
95 replicator@20120000 {
96 compatible = "arm,coresight-dynamic-replicator", "arm,primecell";
97 reg = <0x20120000 0x1000>;
98
99 clocks = <&soc_smc50mhz>;
100 clock-names = "apb_pclk";
101
102 out-ports {
103 #address-cells = <1>;
104 #size-cells = <0>;
105
106 /* replicator output ports */
107 port@0 {
108 reg = <0>;
109 replicator_out_port0: endpoint {
110 remote-endpoint = <&tpiu_in_port>;
111 };
112 };
113
114 port@1 {
115 reg = <1>;
116 replicator_out_port1: endpoint {
117 remote-endpoint = <&etr_in_port>;
118 };
119 };
120 };
121 in-ports {
122 port {
123 replicator_in_port0: endpoint {
124 remote-endpoint = <&csys2_funnel_out_port>;
125 };
126 };
127 };
128 };
129...