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-funnel.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: Arm CoreSight Programmable Trace Bus Funnel
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 funnel merges 2-8 trace sources into a single trace
24 stream with programmable enable and priority of input ports.
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-funnel
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-funnel
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 in-ports:
58 $ref: /schemas/graph.yaml#/properties/ports
59
60 patternProperties:
61 '^port(@[0-7])?$':
62 description: Input connections from CoreSight Trace bus
63 $ref: /schemas/graph.yaml#/properties/port
64
65 out-ports:
66 $ref: /schemas/graph.yaml#/properties/ports
67 additionalProperties: false
68
69 properties:
70 port:
71 description: Output connection to CoreSight Trace bus
72 $ref: /schemas/graph.yaml#/properties/port
73
74 required:
75 - compatible
76 - reg
77 - clocks
78 - clock-names
79 - in-ports
80 - out-ports
81
82 unevaluatedProperties: false
83
84 examples:
85 - |
86 funnel@20040000 {
87 compatible = "arm,coresight-dynamic-funnel", "arm,primecell";
88 reg = <0x20040000 0x1000>;
89
90 clocks = <&oscclk6a>;
91 clock-names = "apb_pclk";
92 out-ports {
93 port {
94 funnel_out_port0: endpoint {
95 remote-endpoint = <&replicator_in_port0>;
96 };
97 };
98 };
99
100 in-ports {
101 #address-cells = <1>;
102 #size-cells = <0>;
103
104 port@0 {
105 reg = <0>;
106 funnel_in_port0: endpoint {
107 remote-endpoint = <&ptm0_out_port>;
108 };
109 };
110
111 port@1 {
112 reg = <1>;
113 funnel_in_port1: endpoint {
114 remote-endpoint = <&ptm1_out_port>;
115 };
116 };
117
118 port@2 {
119 reg = <2>;
120 funnel_in_port2: endpoint {
121 remote-endpoint = <&etm0_out_port>;
122 };
123 };
124 };
125 };
126 ...
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