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Wed, 9 Oct 2024 09:56:38 GMT Received: from jiegan-gv.qualcomm.com (10.80.80.8) by nalasex01c.na.qualcomm.com (10.47.97.35) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.9; Wed, 9 Oct 2024 02:56:32 -0700 From: Jie Gan To: Suzuki K Poulose , Mike Leach , James Clark , "Alexander Shishkin" , Maxime Coquelin , Alexandre Torgue , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Bjorn Andersson , Konrad Dybcio CC: Jinlong Mao , , , , , Tingwei Zhang , Yuanfang Zhang , Tao Zhang , Song Chai , , Subject: [PATCH v5 RESEND 3/5] dt-bindings: arm: Add Coresight TMC Control Unit hardware Date: Wed, 9 Oct 2024 17:55:54 +0800 Message-ID: <20241009095556.1754876-4-quic_jiegan@quicinc.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20241009095556.1754876-1-quic_jiegan@quicinc.com> References: <20241009095556.1754876-1-quic_jiegan@quicinc.com> Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: nasanex01a.na.qualcomm.com (10.52.223.231) To nalasex01c.na.qualcomm.com (10.47.97.35) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-ORIG-GUID: 0-toF4dwtZaS0gDmIw2FuAsR-JOG-e5R X-Proofpoint-GUID: 0-toF4dwtZaS0gDmIw2FuAsR-JOG-e5R X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1039,Hydra:6.0.680,FMLib:17.12.60.29 definitions=2024-09-06_09,2024-09-06_01,2024-09-02_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 mlxscore=0 malwarescore=0 adultscore=1 spamscore=0 clxscore=1015 lowpriorityscore=0 phishscore=0 impostorscore=0 priorityscore=1501 mlxlogscore=999 suspectscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2409260000 definitions=main-2410090064 Add binding file to specify how to define a Coresight TMC Control Unit device in device tree. It is responsible for controlling the data filter function based on the source device's Trace ID for TMC ETR device. The trace data with that Trace id can get into ETR's buffer while other trace data gets ignored. Reviewed-by: Rob Herring (Arm) Signed-off-by: Jie Gan --- .../bindings/arm/qcom,coresight-ctcu.yaml | 84 +++++++++++++++++++ 1 file changed, 84 insertions(+) create mode 100644 Documentation/devicetree/bindings/arm/qcom,coresight-ctcu.yaml diff --git a/Documentation/devicetree/bindings/arm/qcom,coresight-ctcu.yaml b/Documentation/devicetree/bindings/arm/qcom,coresight-ctcu.yaml new file mode 100644 index 000000000000..843b52eaf872 --- /dev/null +++ b/Documentation/devicetree/bindings/arm/qcom,coresight-ctcu.yaml @@ -0,0 +1,84 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/arm/qcom,coresight-ctcu.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: CoreSight TMC Control Unit + +maintainers: + - Yuanfang Zhang + - Mao Jinlong + - Jie Gan + +description: | + The Trace Memory Controller(TMC) is used for Embedded Trace Buffer(ETB), + Embedded Trace FIFO(ETF) and Embedded Trace Router(ETR) configurations. + The configuration mode (ETB, ETF, ETR) is discovered at boot time when + the device is probed. + + The Coresight TMC Control unit controls various Coresight behaviors. + It works as a helper device when connected to TMC ETR device. + It is responsible for controlling the data filter function based on + the source device's Trace ID for TMC ETR device. The trace data with + that Trace id can get into ETR's buffer while other trace data gets + ignored. + +properties: + compatible: + enum: + - qcom,sa8775p-ctcu + + reg: + maxItems: 1 + + clocks: + maxItems: 1 + + clock-names: + items: + - const: apb + + in-ports: + $ref: /schemas/graph.yaml#/properties/ports + + patternProperties: + '^port(@[0-1])?$': + description: Input connections from CoreSight Trace bus + $ref: /schemas/graph.yaml#/properties/port + +required: + - compatible + - reg + - in-ports + +additionalProperties: false + +examples: + - | + ctcu@1001000 { + compatible = "qcom,sa8775p-ctcu"; + reg = <0x1001000 0x1000>; + + clocks = <&aoss_qmp>; + clock-names = "apb"; + + in-ports { + #address-cells = <1>; + #size-cells = <0>; + + port@0 { + reg = <0>; + ctcu_in_port0: endpoint { + remote-endpoint = <&etr0_out_port>; + }; + }; + + port@1 { + reg = <1>; + ctcu_in_port1: endpoint { + remote-endpoint = <&etr1_out_port>; + }; + }; + }; + };