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Message-ID: <20230117145708.16739-4-quic_jinlmao@quicinc.com>
Date: Tue, 17 Jan 2023 06:57:02 -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>,
Konrad Dybcio <konradybcio@...il.com>,
Mike Leach <mike.leach@...aro.org>,
Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>
CC: Mao Jinlong <quic_jinlmao@...cinc.com>,
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>, <devicetree@...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>,
Hao Zhang <quic_hazha@...cinc.com>,
<linux-arm-msm@...r.kernel.org>,
Bjorn Andersson <andersson@...nel.org>,
Rob Herring <robh@...nel.org>
Subject: [PATCH v17 3/9] dt-bindings: arm: Add CoreSight TPDM hardware
Add new coresight-tpdm.yaml file describing the bindings required
to define tpdm in the device trees.
Acked-by: Suzuki K Poulose <suzuki.poulose@....com>
Reviewed-by: Mike Leach <mike.leach@...aro.org>
Reviewed-by: Rob Herring <robh@...nel.org>
Signed-off-by: Tao Zhang <quic_taozha@...cinc.com>
Signed-off-by: Mao Jinlong <quic_jinlmao@...cinc.com>
---
.../bindings/arm/qcom,coresight-tpdm.yaml | 93 +++++++++++++++++++
MAINTAINERS | 1 +
2 files changed, 94 insertions(+)
create mode 100644 Documentation/devicetree/bindings/arm/qcom,coresight-tpdm.yaml
diff --git a/Documentation/devicetree/bindings/arm/qcom,coresight-tpdm.yaml b/Documentation/devicetree/bindings/arm/qcom,coresight-tpdm.yaml
new file mode 100644
index 000000000000..5c08342664ea
--- /dev/null
+++ b/Documentation/devicetree/bindings/arm/qcom,coresight-tpdm.yaml
@@ -0,0 +1,93 @@
+# SPDX-License-Identifier: GPL-2.0-only or BSD-2-Clause
+# Copyright (c) 2023 Qualcomm Innovation Center, Inc. All rights reserved.
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/arm/qcom,coresight-tpdm.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Trace, Profiling and Diagnostics Monitor - TPDM
+
+description: |
+ The TPDM or Monitor serves as data collection component for various dataset
+ types specified in the QPMDA spec. It covers Implementation defined ((ImplDef),
+ Basic Counts (BC), Tenure Counts (TC), Continuous Multi-Bit (CMB), and Discrete
+ Single Bit (DSB). It performs data collection in the data producing clock
+ domain and transfers it to the data collection time domain, generally ATB
+ clock domain.
+
+ The primary use case of the TPDM is to collect data from different data
+ sources and send it to a TPDA for packetization, timestamping, and funneling.
+
+maintainers:
+ - Mao Jinlong <quic_jinlmao@...cinc.com>
+ - Tao Zhang <quic_taozha@...cinc.com>
+
+# Need a custom select here or 'arm,primecell' will match on lots of nodes
+select:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - qcom,coresight-tpdm
+ required:
+ - compatible
+
+properties:
+ $nodename:
+ pattern: "^tpdm(@[0-9a-f]+)$"
+ compatible:
+ items:
+ - const: qcom,coresight-tpdm
+ - const: arm,primecell
+
+ reg:
+ minItems: 1
+ maxItems: 2
+
+ clocks:
+ maxItems: 1
+
+ clock-names:
+ items:
+ - const: apb_pclk
+
+ out-ports:
+ description: |
+ Output connections from the TPDM to coresight funnel/TPDA.
+ $ref: /schemas/graph.yaml#/properties/ports
+
+ properties:
+ port:
+ description: Output connection from the TPDM to coresight
+ funnel/TPDA.
+ $ref: /schemas/graph.yaml#/properties/port
+
+required:
+ - compatible
+ - reg
+ - clocks
+ - clock-names
+
+additionalProperties: false
+
+examples:
+ # minimum TPDM definition. TPDM connect to coresight TPDA.
+ - |
+ tpdm@...c000 {
+ compatible = "qcom,coresight-tpdm", "arm,primecell";
+ reg = <0x0684c000 0x1000>;
+
+ clocks = <&aoss_qmp>;
+ clock-names = "apb_pclk";
+
+ out-ports {
+ port {
+ tpdm_prng_out_tpda_qdss: endpoint {
+ remote-endpoint =
+ <&tpda_qdss_in_tpdm_prng>;
+ };
+ };
+ };
+ };
+
+...
diff --git a/MAINTAINERS b/MAINTAINERS
index 7f86d02cb427..b11d0540bb9d 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -2124,6 +2124,7 @@ S: Maintained
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/arm,coresight-*.yaml
+F: Documentation/devicetree/bindings/arm/qcom,coresight-tpdm.yaml
F: Documentation/devicetree/bindings/arm/arm,embedded-trace-extension.yaml
F: Documentation/devicetree/bindings/arm/arm,trace-buffer-extension.yaml
F: Documentation/trace/coresight/*
--
2.39.0
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