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Message-ID: <20211209141543.21314-9-quic_jinlmao@quicinc.com>
Date: Thu, 9 Dec 2021 22:15:42 +0800
From: Mao Jinlong <quic_jinlmao@...cinc.com>
To: Mathieu Poirier <mathieu.poirier@...aro.org>,
Suzuki K Poulose <suzuki.poulose@....com>,
Alexander Shishkin <alexander.shishkin@...ux.intel.com>
CC: Mao Jinlong <quic_jinlmao@...cinc.com>,
Mike Leach <mike.leach@...aro.org>,
Leo Yan <leo.yan@...aro.org>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
<coresight@...ts.linaro.org>,
<linux-arm-kernel@...ts.infradead.org>,
<linux-kernel@...r.kernel.org>,
Tingwei Zhang <quic_tingweiz@...cinc.com>,
Yuanfang Zhang <quic_yuanfang@...cinc.com>,
Tao Zhang <quic_taozha@...cinc.com>,
Trilok Soni <quic_tsoni@...cinc.com>,
<linux-arm-msm@...r.kernel.org>
Subject: [PATCH v2 8/9] dt-bindings: arm: Adds CoreSight TPDA hardware definitions
Adds new coresight-tpda.yaml file describing the bindings required
to define tpda in the device trees.
Signed-off-by: Tao Zhang <quic_taozha@...cinc.com>
Signed-off-by: Mao Jinlong <quic_jinlmao@...cinc.com>
---
.../bindings/arm/coresight-tpda.yaml | 131 ++++++++++++++++++
MAINTAINERS | 1 +
2 files changed, 132 insertions(+)
create mode 100644 Documentation/devicetree/bindings/arm/coresight-tpda.yaml
diff --git a/Documentation/devicetree/bindings/arm/coresight-tpda.yaml b/Documentation/devicetree/bindings/arm/coresight-tpda.yaml
new file mode 100644
index 000000000000..4ce8c81a109a
--- /dev/null
+++ b/Documentation/devicetree/bindings/arm/coresight-tpda.yaml
@@ -0,0 +1,131 @@
+# SPDX-License-Identifier: GPL-2.0-only or BSD-2-Clause
+# Copyright (c) 2021 Qualcomm Innovation Center, Inc. All rights reserved.
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/arm/coresight-tpda.yaml#
+$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:
+ - Tao Zhang <quic_taozha@...cinc.com>
+ - Mao Jinlong <quic_jinlmao@...cinc.com>
+ - Suzuki K Poulose <suzuki.poulose@....com>
+ - Mathieu Poirier <mathieu.poirier@...aro.org>
+
+properties:
+ $nodename:
+ pattern: "^tpda(@[0-9a-f]+)$"
+ compatible:
+ items:
+ - const: qcom,coresight-tpda
+ - const: arm,primecell
+
+ reg:
+ maxItems: 1
+
+ qcom,tpda-atid:
+ $ref: /schemas/types.yaml#/definitions/uint32-array
+ maxItems: 1
+ description: |
+ Use the ATID field for trace source identification. This allows
+ multiple TPDMs to be interleaved and formatted via the Coresight
+ trace formatter framing protocol and de-formatted/parsed on a host
+ or debugger.
+
+ clocks:
+ maxItems: 1
+
+ clock-names:
+ items:
+ - const: apb_pclk
+
+ in-ports:
+ type: object
+ description: |
+ Input connections from TPDM to TPDA
+ $ref: /schemas/graph.yaml#/properties/ports
+
+ properties:
+ '#address-cells':
+ const: 1
+
+ '#size-cells':
+ const: 0
+
+ patternProperties:
+ "^port@[0-9a-f]+$":
+ type: object
+ required:
+ - reg
+
+ required:
+ - '#size-cells'
+ - '#address-cells'
+
+ 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
+ - qcom,tpda-atid
+ - clocks
+ - clock-names
+ - in-ports
+ - out-ports
+
+additionalProperties: false
+
+examples:
+ # minimum tpda definition.
+ - |
+ tpda@...4000 {
+ compatible = "qcom,coresight-tpda", "arm,primecell";
+ reg = <0x6004000 0x1000>;
+
+ qcom,tpda-atid = <65>;
+
+ 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 12e4e56a252c..d3b7ce75ba9d 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -15567,6 +15567,7 @@ M: Mathieu Poirier <mathieu.poirier@...aro.org>
M: Suzuki K Poulose <suzuki.poulose@....com>
S: Maintained
F: Documentation/ABI/testing/sysfs-bus-coresight-devices-tpdm
+F: Documentation/devicetree/bindings/arm/coresight-tpda.yaml
F: Documentation/devicetree/bindings/arm/coresight-tpdm.yaml
F: drivers/hwtracing/coresight/coresight-tpda.c
F: drivers/hwtracing/coresight/coresight-tpdm.c
--
2.17.1
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