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Message-ID: <20211209141543.21314-4-quic_jinlmao@quicinc.com>
Date: Thu, 9 Dec 2021 22:15:37 +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 3/9] dt-bindings: arm: Adds CoreSight TPDM hardware definitions
Adds new coresight-tpdm.yaml file describing the bindings required
to define tpdm 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-tpdm.yaml | 83 +++++++++++++++++++
.../devicetree/bindings/arm/coresight.txt | 7 ++
MAINTAINERS | 1 +
3 files changed, 91 insertions(+)
create mode 100644 Documentation/devicetree/bindings/arm/coresight-tpdm.yaml
diff --git a/Documentation/devicetree/bindings/arm/coresight-tpdm.yaml b/Documentation/devicetree/bindings/arm/coresight-tpdm.yaml
new file mode 100644
index 000000000000..63b0583afcfc
--- /dev/null
+++ b/Documentation/devicetree/bindings/arm/coresight-tpdm.yaml
@@ -0,0 +1,83 @@
+# SPDX-License-Identifier: GPL-2.0-only or BSD-2-Clause
+# Copyright (c) 2021 Qualcomm Innovation Center, Inc. All rights reserved.
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/arm/coresight-tpdm.yaml#
+$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:
+ - 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:
+ $nodename:
+ pattern: "^tpdm(@[0-9a-f]+)$"
+ compatible:
+ items:
+ - const: qcom,coresight-tpdm
+ - const: arm,primecell
+
+ reg:
+ maxItems: 1
+
+ clocks:
+ maxItems: 1
+
+ clock-names:
+ items:
+ - const: apb_pclk
+
+ out-ports:
+ description: |
+ Output connections from the TPDM to legacy CoreSight trace bus.
+ $ref: /schemas/graph.yaml#/properties/ports
+ properties:
+ port:
+ description: Output connection from the TPDM to legacy CoreSight
+ Trace bus.
+ $ref: /schemas/graph.yaml#/properties/port
+
+required:
+ - compatible
+ - reg
+ - clocks
+ - clock-names
+
+additionalProperties: false
+
+examples:
+ # minimum TPDM definition.
+ - |
+ tpdm@...0000 {
+ compatible = "qcom,coresight-tpdm", "arm,primecell";
+ reg = <0x6980000 0x1000>;
+
+ clocks = <&aoss_qmp>;
+ clock-names = "apb_pclk";
+
+ out-ports {
+ port {
+ tpdm_turing_out_funnel_turing: endpoint {
+ remote-endpoint =
+ <&funnel_turing_in_tpdm_turing>;
+ };
+ };
+ };
+ };
+
+...
diff --git a/Documentation/devicetree/bindings/arm/coresight.txt b/Documentation/devicetree/bindings/arm/coresight.txt
index c68d93a35b6c..f7ce8af48574 100644
--- a/Documentation/devicetree/bindings/arm/coresight.txt
+++ b/Documentation/devicetree/bindings/arm/coresight.txt
@@ -52,6 +52,10 @@ its hardware characteristcs.
"arm,coresight-cti", "arm,primecell";
See coresight-cti.yaml for full CTI definitions.
+ - Trace, Profiling and Diagnostics Monitor (TPDM):
+ "qcom,coresight-tpdm", "arm,primecell";
+ See coresight-tpdm.yaml for full TPDM definitions.
+
* reg: physical base address and length of the register
set(s) of the component.
@@ -82,6 +86,9 @@ its hardware characteristcs.
* Required properties for Coresight Cross Trigger Interface (CTI)
See coresight-cti.yaml for full CTI definitions.
+* Required properties for Trace, Profiling and Diagnostics Monitor (TPDM)
+ See coresight-tpdm.yaml for full TPDM definitions.
+
* Required properties for devices that don't show up on the AMBA bus, such as
non-configurable replicators and non-configurable funnels:
diff --git a/MAINTAINERS b/MAINTAINERS
index 59f39b3194f6..d763ba684b99 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -15566,6 +15566,7 @@ M: Jinlong Mao <quic_jinlmao@...cinc.com>
M: Mathieu Poirier <mathieu.poirier@...aro.org>
M: Suzuki K Poulose <suzuki.poulose@....com>
S: Maintained
+F: Documentation/devicetree/bindings/arm/coresight-tpdm.yaml
F: drivers/hwtracing/coresight/coresight-tpdm.c
QEMU MACHINE EMULATOR AND VIRTUALIZER SUPPORT
--
2.17.1
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