From patchwork Wed Jun 28 02:19:27 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Krishna chaitanya chundru X-Patchwork-Id: 697321 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 358E2EB64D9 for ; Wed, 28 Jun 2023 02:19:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229953AbjF1CTm (ORCPT ); Tue, 27 Jun 2023 22:19:42 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33134 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229488AbjF1CTl (ORCPT ); Tue, 27 Jun 2023 22:19:41 -0400 Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E479C1BE9; Tue, 27 Jun 2023 19:19:40 -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 35S1jEMw024612; Wed, 28 Jun 2023 02:19:37 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h=from : to : cc : subject : date : message-id; s=qcppdkim1; bh=QgWMcPzFqNiXlDNtnl/5wBCYzDq0M3EAgNvmmatSSIo=; b=ad8BspXShklU8O0dDFabdN8PRVCPguR9+Zc2+EUyxlvScOyQdmstb2Qr1qljAySXEOKz n6IWNxSZvbD1YOaJhcXtrysEGHRxuLYKP7QL8qwsjVU4jz2GDpjYdfKYrYOfODFKqknQ /zKL+6Hv+XrqWk/KgSp9x8bj8teB7Xj2cqTT7HhTXPoEgFg8DJ33eyQn1M87UxKiFYul ezpDN9llWwAiBf05+qRFMVj/lrjup1Uj2RuHbH2M12C9tq1zaGm+X2AxWu3JDEGhWSky 6S5lu9vlE9xUsyw6Ylnlpn0q3m57L+RASzB0jSMC4Rws2gkvXT8tqL6JpD+kKCDg+NDj og== Received: from apblrppmta01.qualcomm.com (blr-bdr-fw-01_GlobalNAT_AllZones-Outside.qualcomm.com [103.229.18.19]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3rgbfsr1j9-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 28 Jun 2023 02:19:37 +0000 Received: from pps.filterd (APBLRPPMTA01.qualcomm.com [127.0.0.1]) by APBLRPPMTA01.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTP id 35S2JYxl023379; Wed, 28 Jun 2023 02:19:34 GMT Received: from pps.reinject (localhost [127.0.0.1]) by APBLRPPMTA01.qualcomm.com (PPS) with ESMTP id 3rdsjkqpkk-1; Wed, 28 Jun 2023 02:19:34 +0000 Received: from APBLRPPMTA01.qualcomm.com (APBLRPPMTA01.qualcomm.com [127.0.0.1]) by pps.reinject (8.17.1.5/8.17.1.5) with ESMTP id 35S2JYi2023365; Wed, 28 Jun 2023 02:19:34 GMT Received: from hu-sgudaval-hyd.qualcomm.com (hu-krichai-hyd.qualcomm.com [10.213.110.112]) by APBLRPPMTA01.qualcomm.com (PPS) with ESMTP id 35S2JXv5023361; Wed, 28 Jun 2023 02:19:34 +0000 Received: by hu-sgudaval-hyd.qualcomm.com (Postfix, from userid 4058933) id 324CB4AA4; Wed, 28 Jun 2023 07:49:33 +0530 (+0530) From: Krishna chaitanya chundru To: manivannan.sadhasivam@linaro.org Cc: helgaas@kernel.org, linux-pci@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, quic_vbadigan@quicinc.com, quic_nitegupt@quicinc.com, quic_skananth@quicinc.com, quic_ramkri@quicinc.com, krzysztof.kozlowski@linaro.org, Krishna chaitanya chundru Subject: [PATCH v6 0/3] PCI: qcom: ep: Add basic interconnect support Date: Wed, 28 Jun 2023 07:49:27 +0530 Message-Id: <1687918770-28416-1-git-send-email-quic_krichai@quicinc.com> X-Mailer: git-send-email 2.7.4 X-QCInternal: smtphost X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: K-7N3sMDXgpjPdBcls83U6iog9SjsFSf X-Proofpoint-ORIG-GUID: K-7N3sMDXgpjPdBcls83U6iog9SjsFSf X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.254,Aquarius:18.0.957,Hydra:6.0.591,FMLib:17.11.176.26 definitions=2023-06-27_16,2023-06-27_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 spamscore=0 bulkscore=0 suspectscore=0 phishscore=0 mlxlogscore=538 adultscore=0 priorityscore=1501 clxscore=1015 malwarescore=0 mlxscore=0 impostorscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2305260000 definitions=main-2306280019 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Add basic support for managing "pcie-mem" interconnect path by setting a low constraint before enabling clocks and updating it after the link is up based on link speed and width the device got enumerated. changes from v5: - addressed the comments by mani. changes from v4: - rebased with linux-next. - Added comments as suggested by mani. - removed the arm: dts: qcom: sdx55: Add interconnect path as that patch is already applied. changes from v3: - ran make DT_CHECKER_FLAGS=-m dt_binding_check and fixed errors. - Added macros in the qcom ep driver patch as suggested by Dmitry changes from v2: - changed the logic for getting speed and width as suggested by bjorn. - fixed compilation errors. Krishna chaitanya chundru (3): dt-bindings: PCI: qcom: ep: Add interconnects path arm: dts: qcom: sdx65: Add PCIe interconnect path PCI: qcom-ep: Add ICC bandwidth voting support .../devicetree/bindings/pci/qcom,pcie-ep.yaml | 13 ++++ arch/arm/boot/dts/qcom/qcom-sdx65.dtsi | 3 + drivers/pci/controller/dwc/pcie-qcom-ep.c | 72 +++++++++++++++++++++- 3 files changed, 87 insertions(+), 1 deletion(-)