diff mbox series

[v12,7/9] dt-bindings: arm: Adds CoreSight TPDA hardware definitions

Message ID 20220710021032.27455-8-quic_jinlmao@quicinc.com (mailing list archive)
State New, archived
Headers show
Series Coresight: Add support for TPDM and TPDA | expand

Commit Message

Mao Jinlong July 10, 2022, 2:10 a.m. UTC 
Adds new coresight-tpda.yaml file describing the bindings required
to define tpda in the device trees.

Acked-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Mike Leach <mike.leach@linaro.org>
Signed-off-by: Tao Zhang <quic_taozha@quicinc.com>
Signed-off-by: Mao Jinlong <quic_jinlmao@quicinc.com>
---
 .../bindings/arm/qcom,coresight-tpda.yaml     | 111 ++++++++++++++++++
 MAINTAINERS                                   |   1 +
 2 files changed, 112 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/arm/qcom,coresight-tpda.yaml
diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/arm/qcom,coresight-tpda.yaml b/Documentation/devicetree/bindings/arm/qcom,coresight-tpda.yaml
new file mode 100644
index 000000000000..eb9bfc5f93a2
--- /dev/null
+++ b/Documentation/devicetree/bindings/arm/qcom,coresight-tpda.yaml
@@ -0,0 +1,111 @@ 
+# SPDX-License-Identifier: GPL-2.0-only or BSD-2-Clause
+# Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved.
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/arm/qcom,coresight-tpda.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Trace, Profiling and Diagnostics Aggregator - TPDA
+
+description: |
+  TPDAs are responsible for packetization and timestamping of data sets
+  utilizing the MIPI STPv2 packet protocol. Pulling data sets from one or
+  more attached TPDM and pushing the resultant (packetized) data out a
+  master ATB interface. Performing an arbitrated ATB interleaving (funneling)
+  task for free-flowing data from TPDM (i.e. CMB and DSB data set flows).
+
+maintainers:
+  - Mao Jinlong <quic_jinlmao@quicinc.com>
+  - Tao Zhang <quic_taozha@quicinc.com>
+
+# Need a custom select here or 'arm,primecell' will match on lots of nodes
+select:
+  properties:
+    compatible:
+      contains:
+        enum:
+          - qcom,coresight-tpda
+  required:
+    - compatible
+
+properties:
+  $nodename:
+    pattern: "^tpda(@[0-9a-f]+)$"
+  compatible:
+    items:
+      - const: qcom,coresight-tpda
+      - const: arm,primecell
+
+  reg:
+    minItems: 1
+    maxItems: 2
+
+  clocks:
+    maxItems: 1
+
+  clock-names:
+    items:
+      - const: apb_pclk
+
+  in-ports:
+    type: object
+    description: |
+      Input connections from TPDM to TPDA
+    $ref: /schemas/graph.yaml#/properties/ports
+
+  out-ports:
+    type: object
+    description: |
+      Output connections from the TPDA to legacy CoreSight trace bus.
+    $ref: /schemas/graph.yaml#/properties/ports
+
+    properties:
+      port:
+        description:
+          Output connection from the TPDA to legacy CoreSight Trace bus.
+        $ref: /schemas/graph.yaml#/properties/port
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - clock-names
+  - in-ports
+  - out-ports
+
+additionalProperties: false
+
+examples:
+  # minimum tpda definition.
+  - |
+    tpda@6004000 {
+       compatible = "qcom,coresight-tpda", "arm,primecell";
+       reg = <0x6004000 0x1000>;
+
+       clocks = <&aoss_qmp>;
+       clock-names = "apb_pclk";
+
+       in-ports {
+         #address-cells = <1>;
+         #size-cells = <0>;
+
+        port@0 {
+          reg = <0>;
+          tpda_qdss_0_in_tpdm_dcc: endpoint {
+            remote-endpoint =
+              <&tpdm_dcc_out_tpda_qdss_0>;
+            };
+        };
+      };
+
+       out-ports {
+         port {
+                 tpda_qdss_out_funnel_in0: endpoint {
+                    remote-endpoint =
+                    <&funnel_in0_in_tpda_qdss>;
+                  };
+          };
+       };
+    };
+
+...
diff --git a/MAINTAINERS b/MAINTAINERS
index db7f70be6850..271465616b0b 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1985,6 +1985,7 @@  T:	git git://git.kernel.org/pub/scm/linux/kernel/git/coresight/linux.git
 F:	Documentation/ABI/testing/sysfs-bus-coresight-devices-*
 F:	Documentation/devicetree/bindings/arm/coresight-cpu-debug.txt
 F:	Documentation/devicetree/bindings/arm/coresight-cti.yaml
+F:	Documentation/devicetree/bindings/arm/qcom,coresight-tpda.yaml
 F:	Documentation/devicetree/bindings/arm/qcom,coresight-tpdm.yaml
 F:	Documentation/devicetree/bindings/arm/coresight.txt
 F:	Documentation/devicetree/bindings/arm/ete.yaml