From patchwork Fri May 5 09:24:21 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hao Zhang X-Patchwork-Id: 679619 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 427BDC7EE2F for ; Fri, 5 May 2023 09:25:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230348AbjEEJZe (ORCPT ); Fri, 5 May 2023 05:25:34 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35236 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231693AbjEEJZc (ORCPT ); Fri, 5 May 2023 05:25:32 -0400 Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3F7F518160; Fri, 5 May 2023 02:25:28 -0700 (PDT) Received: from pps.filterd (m0279872.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 3458dkJ1020958; Fri, 5 May 2023 09:25:16 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-type; s=qcppdkim1; bh=hqlg6ebs/COwACKjKczmldu/2i6RSjePD0pWj7lhvpc=; b=DbjZbstETWHH10CLu4kPugd2ql98JS8Dt49umMUFjMlnLvpzQkw5vmJyoLN/Ac61p5kR LklFHX9csXv3zNF9Snc83GoipjyVkl8QUvD0k2x9iMqfvFGNXVnuK5MDhCBKXUwQpNI2 brU8/8l41A5IMdW3BxTKA2kmv1AVd2ej7mctRue92+LLKbdk5t/hKvx7OZlNk84Q3n+J /z0N6hHhj0X2yipGZiayyyAbu5v+Jpwmk411hGCEPpipkIPN5RW2HPl38ewxfaVTEFXU geY6jz5ijTTRYeA8HTQhEB5mrTM6tjhN6tR55w416EUkFTmsALbCNst8sOjsYrGM8oV1 og== Received: from nasanppmta05.qualcomm.com (i-global254.qualcomm.com [199.106.103.254]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3qctsv0ja2-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 05 May 2023 09:25:16 +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 3459PFZp027026 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 5 May 2023 09:25:15 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; Fri, 5 May 2023 02:25:08 -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 v4 2/3] dt-bindings: arm: Add Coresight Dummy Trace Date: Fri, 5 May 2023 17:24:21 +0800 Message-ID: <20230505092422.32217-3-quic_hazha@quicinc.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20230505092422.32217-1-quic_hazha@quicinc.com> References: <20230505092422.32217-1-quic_hazha@quicinc.com> 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-ORIG-GUID: bJI2Bj2_8zVflCXsB6s0gzKGOGZzofB_ X-Proofpoint-GUID: bJI2Bj2_8zVflCXsB6s0gzKGOGZzofB_ 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=2023-05-05_15,2023-05-04_01,2023-02-09_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 bulkscore=0 lowpriorityscore=0 adultscore=0 spamscore=0 mlxlogscore=916 suspectscore=0 phishscore=0 mlxscore=0 priorityscore=1501 impostorscore=0 clxscore=1015 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2303200000 definitions=main-2305050077 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Add new coresight-dummy.yaml file describing the bindings required to define coresight dummy trace in the device trees. Signed-off-by: Hao Zhang --- .../bindings/arm/arm,coresight-dummy.yaml | 102 ++++++++++++++++++ 1 file changed, 102 insertions(+) create mode 100644 Documentation/devicetree/bindings/arm/arm,coresight-dummy.yaml diff --git a/Documentation/devicetree/bindings/arm/arm,coresight-dummy.yaml b/Documentation/devicetree/bindings/arm/arm,coresight-dummy.yaml new file mode 100644 index 000000000000..126518863eea --- /dev/null +++ b/Documentation/devicetree/bindings/arm/arm,coresight-dummy.yaml @@ -0,0 +1,102 @@ +# SPDX-License-Identifier: GPL-2.0-only or BSD-2-Clause +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/arm/arm,coresight-dummy.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: ARM Coresight Dummy component + +description: | + Coresight Dummy Trace Module is for the specific devices that kernel + don't have permission to access or configure, e.g., CoreSight TPDMs + on Qualcomm platforms. So there need driver to register dummy devices + as Coresight devices. It may also be used to define components that + may not have any programming interfaces (e.g, static links), so that + paths can be established in the driver. Provide Coresight API for + dummy device operations, such as enabling and disabling dummy devices. + Build the Coresight path for dummy sink or dummy source for debugging. + + The primary use case of the coresight dummy is to build path in kernel + side for dummy sink and dummy source. + +maintainers: + - Mao Jinlong + - Tao Zhang + - Hao Zhang + - Yuanfang Zhang + +properties: + compatible: + items: + - enum: + - arm,coresight-dummy-sink + - arm,coresight-dummy-source + + out-ports: + $ref: /schemas/graph.yaml#/properties/ports + + properties: + port: + description: Output connection from the source to Coresight + Trace bus. + $ref: /schemas/graph.yaml#/properties/port + + in-ports: + $ref: /schemas/graph.yaml#/properties/ports + + properties: + port: + description: Input connection from the Coresight Trace bus to + dummy sink, such as Embedded USB debugger(EUD). + $ref: /schemas/graph.yaml#/properties/port + +required: + - compatible + +if: + # If the compatible contains the below value + properties: + compatible: + contains: + const: arm,coresight-dummy-sink + +then: + required: + - in-ports + +else: + required: + - out-ports + +additionalProperties: false + +examples: + # Minimum dummy sink definition. Dummy sink connect to coresight replicator. + - | + sink { + compatible = "arm,coresight-dummy-sink"; + + in-ports { + port { + eud_in_replicator_swao: endpoint { + remote-endpoint = <&replicator_swao_out_eud>; + }; + }; + }; + }; + + # Minimum dummy source definition. Dummy source connect to coresight funnel. + - | + source { + compatible = "arm,coresight-dummy-source"; + + out-ports { + port { + dummy_riscv_out_funnel_swao: endpoint { + remote-endpoint = <&funnel_swao_in_dummy_riscv>; + }; + }; + }; + }; + +...