From patchwork Sat Apr 22 07:37:11 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hao Zhang X-Patchwork-Id: 676368 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id EB575C77B7F for ; Sat, 22 Apr 2023 07:38:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229590AbjDVHiO (ORCPT ); Sat, 22 Apr 2023 03:38:14 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39580 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229549AbjDVHiN (ORCPT ); Sat, 22 Apr 2023 03:38:13 -0400 Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7F67C19BD; Sat, 22 Apr 2023 00:38:06 -0700 (PDT) Received: from pps.filterd (m0279866.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 33M7am7D004091; Sat, 22 Apr 2023 07:37:37 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h=from : to : cc : subject : date : message-id : mime-version : content-type; s=qcppdkim1; bh=bqmpcV1FW2534rLqe62Avhyw9LZvOgM2eG8jaM97ys4=; b=e02W+m6IVfZKaoOVLG5RsELCeRljSvwbBJjSV8IK4PDgEzttc21Y24cS9LbQa3tFWlnT lLPjV88FKeivPCxIa5E2HKYzrYluG3HTMnn2l50QRtGpfAceeBU6oPfqSsDdM1KZBiP5 IlN0xzxJF8m8zYVEgtE8iAU//JFfAFTox23MMwvdZ5mJf0PD4YmOdMJ9iyPpLwkBRh5k 8+aA0ecA0PA82fOK5t2DJwG5YXBf+gWOJzju5oMAS90IosX0TezQ54YAWqH4fPhRcR3S mssOUAp1N3J/U9AQO5663FigROmJ3WHU1IszQSXV8IpWTCfVLhud6Pfh72M+rcyOkwW3 qQ== Received: from nasanppmta05.qualcomm.com (i-global254.qualcomm.com [199.106.103.254]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3q48vf84w3-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Sat, 22 Apr 2023 07:37:37 +0000 Received: from nasanex01a.na.qualcomm.com (nasanex01a.na.qualcomm.com [10.52.223.231]) by NASANPPMTA05.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 33M7baM2000578 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Sat, 22 Apr 2023 07:37:36 GMT Received: from hazha-gv.qualcomm.com (10.80.80.8) by nasanex01a.na.qualcomm.com (10.52.223.231) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.42; Sat, 22 Apr 2023 00:37:30 -0700 From: Hao Zhang To: Suzuki K Poulose , Mike Leach , Leo Yan , Alexander Shishkin , Mathieu Poirier , Konrad Dybcio , "Rob Herring" , Krzysztof Kozlowski , Andy Gross , "Paul Walmsley" , Palmer Dabbelt , Albert Ou , Jonathan Corbet CC: Hao Zhang , Greg Kroah-Hartman , , , , , Tingwei Zhang , Jinlong Mao , Yuanfang Zhang , Tao Zhang , Trilok Soni , , Bjorn Andersson , Subject: [PATCH v3 0/3] Add support to configure Coresight Dummy subunit Date: Sat, 22 Apr 2023 15:37:11 +0800 Message-ID: <20230422073714.38844-1-quic_hazha@quicinc.com> X-Mailer: git-send-email 2.17.1 MIME-Version: 1.0 X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01b.na.qualcomm.com (10.46.141.250) To nasanex01a.na.qualcomm.com (10.52.223.231) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: R8ytd7KAOx5pcdJt_QHO2IZG7sbLm9x8 X-Proofpoint-ORIG-GUID: R8ytd7KAOx5pcdJt_QHO2IZG7sbLm9x8 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.254,Aquarius:18.0.942,Hydra:6.0.573,FMLib:17.11.170.22 definitions=2023-04-21_08,2023-04-21_01,2023-02-09_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1011 lowpriorityscore=0 impostorscore=0 malwarescore=0 priorityscore=1501 spamscore=0 mlxlogscore=999 phishscore=0 suspectscore=0 mlxscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2303200000 definitions=main-2304220064 Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Introduction of Coresight Dummy subunit The Coresight Dummy subunit is for Coresight Dummy component, there are some specific Coresight devices that HLOS don't have permission to access. Such as some TPDMs, they would be configured in NON-HLOS side, but it's necessary to build Coresight path for it to debug. So there need driver to register dummy devices as Coresight devices. Commit link: https://git.codelinaro.org/clo/linux-kernel/coresight/-/tree/coresight-dummy-v3 changes in V3: 1. Use API "dev_dbg" to replace "dev_info". -- Suzuki K Poulose 2. Drop "qcom" property and take it as a dummy framework. -- Suzuki K Poulose 3. Add new sub-type "CORESIGHT_DEV_SUBTYPE_SINK_DUMMY" to support coresight dummy module -- Mike Leach 4. Use compatibles "arm,coresight-dummy-source" and "arm,coresight-dummy-sink" to replace property "qcom,dummy-source" and "qcom,dummy-sink". -- Mike Leach 5. Define source_devs and sink_devs DEVLIST to replace dummy_devs, make it clear at the first level. -- Mike Leach 6. Modify subject of YAML patch, drop "YAML schema". -- Krzysztof Kozlowski 7. Drop some redundant items and correct syntax errors in yaml file. -- Krzysztof Kozlowski/Rob Herring 8. Correct required property of yaml file, constrain out ports to dummy-source and in ports to dummy-sink. -- Mike Leach 9. Drop "Sysfs files and directories" contents of coresight-dummy.rst. -- Suzuki K Poulose/Greg Kroah-Hartman 10.Correct syntax errors of coresight-dummy.rst. -- Bagas Sanjaya Changes in V2: 1. Declare dummy_init and dummy_exit as static to fix missing-prototypes warnings. -- kernel test robot 2. Fix the errors of coresight-dummy yaml file. -- Rob Herring Hao Zhang (3): Coresight: Add coresight dummy driver dt-bindings: arm: Add Coresight Dummy Trace Documentation: trace: Add documentation for Coresight Dummy Trace .../bindings/arm/arm,coresight-dummy.yaml | 101 ++++++++++ .../trace/coresight/coresight-dummy.rst | 34 ++++ drivers/hwtracing/coresight/Kconfig | 11 ++ drivers/hwtracing/coresight/Makefile | 1 + drivers/hwtracing/coresight/coresight-dummy.c | 179 ++++++++++++++++++ include/linux/coresight.h | 1 + 6 files changed, 327 insertions(+) create mode 100644 Documentation/devicetree/bindings/arm/arm,coresight-dummy.yaml create mode 100644 Documentation/trace/coresight/coresight-dummy.rst create mode 100644 drivers/hwtracing/coresight/coresight-dummy.c