Resguardo inicial

2026-09-06 12:53:21 -06:00
parent 662efe3c2a
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+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/arm/arm,coresight-dynamic-funnel.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Arm CoreSight Programmable Trace Bus Funnel
+
+maintainers:
+  - Mathieu Poirier <mathieu.poirier@linaro.org>
+  - Mike Leach <mike.leach@linaro.org>
+  - Leo Yan <leo.yan@linaro.org>
+  - Suzuki K Poulose <suzuki.poulose@arm.com>
+
+description: |
+  CoreSight components are compliant with the ARM CoreSight architecture
+  specification and can be connected in various topologies to suit a particular
+  SoCs tracing needs. These trace components can generally be classified as
+  sinks, links and sources. Trace data produced by one or more sources flows
+  through the intermediate links connecting the source to the currently selected
+  sink.
+
+  The Coresight funnel merges 2-8 trace sources into a single trace
+  stream with programmable enable and priority of input ports.
+
+# Need a custom select here or 'arm,primecell' will match on lots of nodes
+select:
+  properties:
+    compatible:
+      contains:
+        const: arm,coresight-dynamic-funnel
+  required:
+    - compatible
+
+allOf:
+  - $ref: /schemas/arm/primecell.yaml#
+
+properties:
+  compatible:
+    items:
+      - const: arm,coresight-dynamic-funnel
+      - const: arm,primecell
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    minItems: 1
+    maxItems: 2
+
+  clock-names:
+    minItems: 1
+    items:
+      - const: apb_pclk
+      - const: atclk
+
+  power-domains:
+    maxItems: 1
+
+  label:
+    description:
+      Description of a coresight device.
+
+  in-ports:
+    $ref: /schemas/graph.yaml#/properties/ports
+
+    patternProperties:
+      '^port(@[0-7])?$':
+        description: Input connections from CoreSight Trace bus
+        $ref: /schemas/graph.yaml#/properties/port
+
+  out-ports:
+    $ref: /schemas/graph.yaml#/properties/ports
+    additionalProperties: false
+
+    properties:
+      port:
+        description: Output connection to CoreSight Trace bus
+        $ref: /schemas/graph.yaml#/properties/port
+
+  access-controllers:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - clock-names
+  - in-ports
+  - out-ports
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    funnel@20040000 {
+        compatible = "arm,coresight-dynamic-funnel", "arm,primecell";
+        reg = <0x20040000 0x1000>;
+
+        clocks = <&oscclk6a>;
+        clock-names = "apb_pclk";
+        out-ports {
+            port {
+                funnel_out_port0: endpoint {
+                    remote-endpoint = <&replicator_in_port0>;
+                };
+            };
+        };
+
+        in-ports {
+            #address-cells = <1>;
+            #size-cells = <0>;
+
+            port@0 {
+                reg = <0>;
+                funnel_in_port0: endpoint {
+                    remote-endpoint = <&ptm0_out_port>;
+                };
+            };
+
+            port@1 {
+                reg = <1>;
+                funnel_in_port1: endpoint {
+                    remote-endpoint = <&ptm1_out_port>;
+                };
+            };
+
+            port@2 {
+                reg = <2>;
+                funnel_in_port2: endpoint {
+                    remote-endpoint = <&etm0_out_port>;
+                };
+            };
+        };
+    };
+...