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-static-funnel.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: Arm CoreSight Static 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 static funnel merges 2-8 trace sources into a single trace
24 stream.
25
26 properties:
27 compatible:
28 const: arm,coresight-static-funnel
29
30 power-domains:
31 maxItems: 1
32
33 in-ports:
34 $ref: /schemas/graph.yaml#/properties/ports
35
36 patternProperties:
37 '^port@[0-7]$':
38 description: Input connections from CoreSight Trace bus
39 $ref: /schemas/graph.yaml#/properties/port
40
41 out-ports:
42 $ref: /schemas/graph.yaml#/properties/ports
43 additionalProperties: false
44
45 properties:
46 port:
47 description: Output connection to CoreSight Trace bus
48 $ref: /schemas/graph.yaml#/properties/port
49
50 required:
51 - compatible
52 - in-ports
53 - out-ports
54
55 additionalProperties: false
56
57 examples:
58 - |
59 funnel {
60 /*
61 * non-configurable replicators don't show up on the
62 * AMBA bus. As such no need to add "arm,primecell".
63 */
64 compatible = "arm,coresight-static-funnel";
65
66 out-ports {
67 port {
68 combo_funnel_out: endpoint {
69 remote-endpoint = <&top_funnel_in>;
70 };
71 };
72 };
73
74 in-ports {
75 #address-cells = <1>;
76 #size-cells = <0>;
77
78 port@0 {
79 reg = <0>;
80 combo_funnel_in0: endpoint {
81 remote-endpoint = <&cluster0_etf_out>;
82 };
83 };
84
85 port@1 {
86 reg = <1>;
87 combo_funnel_in1: endpoint {
88 remote-endpoint = <&cluster1_etf_out>;
89 };
90 };
91 };
92 };
93 ...
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