On 8/20/2025 3:45 AM, Rob Herring wrote:
On Tue, Aug 19, 2025 at 03:27:43AM -0700, Yuanfang Zhang wrote:
Add device tree binding for Qualcomm Coresight Interconnect Trace Network On Chip (ITNOC). This TNOC acts as a CoreSight graph link that forwards trace data from a subsystem to the Aggregator TNOC, without aggregation or ATID functionality.
Signed-off-by: Yuanfang Zhang yuanfang.zhang@oss.qualcomm.com
.../bindings/arm/qcom,coresight-itnoc.yaml | 96 ++++++++++++++++++++++ 1 file changed, 96 insertions(+)
diff --git a/Documentation/devicetree/bindings/arm/qcom,coresight-itnoc.yaml b/Documentation/devicetree/bindings/arm/qcom,coresight-itnoc.yaml new file mode 100644 index 0000000000000000000000000000000000000000..a3b5f2b949f69617a014d0ae2831c9c767178f8c --- /dev/null +++ b/Documentation/devicetree/bindings/arm/qcom,coresight-itnoc.yaml @@ -0,0 +1,96 @@ +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/arm/qcom,coresight-itnoc.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml#
+title: Qualcomm Interconnect Trace Network On Chip - ITNOC
+maintainers:
- Yuanfang Zhang yuanfang.zhang@oss.qualcomm.com
+description:
- The Interconnect TNOC is a CoreSight graph link that forwards trace data
- from a subsystem to the Aggregator TNOC. Compared to Aggregator TNOC, it
- does not have aggregation and ATID functionality.
+properties:
- $nodename:
- pattern: "^itnoc(@[0-9a-f]+)?$"
- compatible:
- const: qcom,coresight-itnoc
- reg:
- maxItems: 1
- clocks:
- maxItems: 1
- clock-names:
- items:
- const: apb- in-ports:
- $ref: /schemas/graph.yaml#/properties/ports
- properties:
'#address-cells':const: 1'#size-cells':const: 0Drop these. Already defined by the above ref.
sure, will update.
- patternProperties:
'^port(@[0-9a-f]{1,2})?$':description: Input connections from CoreSight Trace Bus$ref: /schemas/graph.yaml#/properties/port- out-ports:
- $ref: /schemas/graph.yaml#/properties/ports
- additionalProperties: false
- properties:
port:description: out connections to aggregator TNOC$ref: /schemas/graph.yaml#/properties/port+required:
- compatible
- reg
- clocks
- clock-names
- in-ports
- out-ports
+additionalProperties: false
+examples:
- |
- itnoc@109ac000 {
compatible = "qcom,coresight-itnoc";reg = <0x109ac000 0x1000>;clocks = <&aoss_qmp>;clock-names = "apb";in-ports {#address-cells = <1>;#size-cells = <0>;port@0 {reg = <0>;tn_ic_in_tpdm_dcc: endpoint {remote-endpoint = <&tpdm_dcc_out_tn_ic>;};};};out-ports {port {tn_ic_out_tnoc_aggr: endpoint {/* to Aggregator TNOC input */remote-endpoint = <&tn_ag_in_tn_ic>;};};};- };
+...
-- 2.34.1