From patchwork Wed Oct 5 09:06:58 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Akhil P Oommen X-Patchwork-Id: 12999072 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 6AEFBC43217 for ; Wed, 5 Oct 2022 09:07:55 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229552AbiJEJHx (ORCPT ); Wed, 5 Oct 2022 05:07:53 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60076 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229446AbiJEJHw (ORCPT ); Wed, 5 Oct 2022 05:07:52 -0400 Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A203D67456; Wed, 5 Oct 2022 02:07:50 -0700 (PDT) Received: from pps.filterd (m0279872.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.5/8.17.1.5) with ESMTP id 2958c0Io013174; Wed, 5 Oct 2022 09:07:29 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=WKK193DeUkzacHgCqgZn1fZGpo8hFFg5A/8xRrv1rG4=; b=cgOcvuAM35g3fzQEcx/OGnUqh4fHQ/taoqkWOP91puxa6UGZrW/lU9XN5otqo7ExBkOz ge2ovWlrQSGyZJloZ3FBnjcsJGleEpV0PYO+Nu5Cl8apknkyznSpXS7NMpndAhA0sbKk H8AAluc6BQXmKOn+2NHJI3MOY6TaRnIbvo1EroKyYRUXNLK74tlGwq4RBws4qvWm4Z/c Ot5jGxRlp59+kzpgN/ukoVwkS7mzyhEH6hutG7ihGYUgO4K3stFd+PVmfWSqiqIAyIIP SOSiTk3tbqmt62HoUQHEB99XkCKLXvjFVzbhYXveBfs32LjyFCllnhxHOQkqjBe0eRdo 4A== Received: from nalasppmta01.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3k0sq5s8vy-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 05 Oct 2022 09:07:29 +0000 Received: from nalasex01a.na.qualcomm.com (nalasex01a.na.qualcomm.com [10.47.209.196]) by NALASPPMTA01.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 29597SZj009299 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 5 Oct 2022 09:07:28 GMT Received: from hyd-lnxbld559.qualcomm.com (10.80.80.8) by nalasex01a.na.qualcomm.com (10.47.209.196) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.29; Wed, 5 Oct 2022 02:07:21 -0700 From: Akhil P Oommen To: freedreno , , , Rob Clark , Bjorn Andersson , Stephen Boyd , Dmitry Baryshkov , Philipp Zabel CC: Douglas Anderson , , Akhil P Oommen , Abhinav Kumar , Andy Gross , Daniel Vetter , David Airlie , "Konrad Dybcio" , Krzysztof Kozlowski , Michael Turquette , Rob Herring , Sean Paul , Stephen Boyd , , , Subject: [PATCH v7 0/6] clk/qcom: Support gdsc collapse polling using 'reset' interface Date: Wed, 5 Oct 2022 14:36:58 +0530 Message-ID: <1664960824-20951-1-git-send-email-quic_akhilpo@quicinc.com> X-Mailer: git-send-email 2.7.4 MIME-Version: 1.0 X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01a.na.qualcomm.com (10.52.223.231) To nalasex01a.na.qualcomm.com (10.47.209.196) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-ORIG-GUID: M1iZJKbT-CIlpy9m8o03DwIVJZRFH-FI X-Proofpoint-GUID: M1iZJKbT-CIlpy9m8o03DwIVJZRFH-FI X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.895,Hydra:6.0.528,FMLib:17.11.122.1 definitions=2022-10-04_09,2022-09-29_03,2022-06-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1011 suspectscore=0 mlxlogscore=999 phishscore=0 spamscore=0 malwarescore=0 impostorscore=0 mlxscore=0 bulkscore=0 priorityscore=1501 adultscore=0 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2209130000 definitions=main-2210050057 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Some clients like adreno gpu driver would like to ensure that its gdsc is collapsed at hardware during a gpu reset sequence. This is because it has a votable gdsc which could be ON due to a vote from another subsystem like tz, hyp etc or due to an internal hardware signal. To allow this, gpucc driver can expose an interface to the client driver using reset framework. Using this the client driver can trigger a polling within the gdsc driver. This series is rebased on top of qcom/linux:for-next branch. Related discussion: https://patchwork.freedesktop.org/patch/493144/ Changes in v7: - Update commit message (Bjorn) - Rebased on top of qcom/linux:for-next branch. Changes in v6: - No code changes in this version. Just captured the Acked-by tags Changes in v5: - Nit: Remove a duplicate blank line (Krzysztof) Changes in v4: - Update gpu dt-binding schema - Typo fix in commit text Changes in v3: - Use pointer to const for "struct qcom_reset_ops" in qcom_reset_map (Krzysztof) Changes in v2: - Return error when a particular custom reset op is not implemented. (Dmitry) Akhil P Oommen (6): dt-bindings: clk: qcom: Support gpu cx gdsc reset clk: qcom: Allow custom reset ops clk: qcom: gdsc: Add a reset op to poll gdsc collapse clk: qcom: gpucc-sc7280: Add cx collapse reset support dt-bindings: drm/msm/gpu: Add optional resets arm64: dts: qcom: sc7280: Add Reset support for gpu .../devicetree/bindings/display/msm/gpu.yaml | 6 +++++ arch/arm64/boot/dts/qcom/sc7280.dtsi | 3 +++ drivers/clk/qcom/gdsc.c | 23 ++++++++++++++---- drivers/clk/qcom/gdsc.h | 7 ++++++ drivers/clk/qcom/gpucc-sc7280.c | 10 ++++++++ drivers/clk/qcom/reset.c | 27 +++++++++++++++++++++- drivers/clk/qcom/reset.h | 8 +++++++ include/dt-bindings/clock/qcom,gpucc-sc7280.h | 3 +++ 8 files changed, 82 insertions(+), 5 deletions(-) Signed-off-by: Ulf Hansson