From patchwork Wed Aug 17 14:57:49 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: 12946728 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 5880EC25B0E for ; Thu, 18 Aug 2022 04:17:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242756AbiHRERx (ORCPT ); Thu, 18 Aug 2022 00:17:53 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46606 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S243171AbiHRERh (ORCPT ); Thu, 18 Aug 2022 00:17:37 -0400 Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B5922A7228; Wed, 17 Aug 2022 21:17:31 -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 27I4C0hD003644; Thu, 18 Aug 2022 04:17:22 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=H31UzLEojwM3wgQfVzmfwrfB8cyUdcUtpJwyaBqUfKs=; b=gtEmTYGpGlLJI5tlY91wfouuqeSIX+bYqu/PtmpZLn6mylhzYgVFmhxxn8u9/7N0GyU8 TqJ+cP71Av+KI2+F4pi+0VhoKDtbTj28slALS/EEeIHOsb6ATPhlElTBFYehaKSiEhGM sq5G3M+rigMfkg05NapCu7e3lckUJ86PD647S/xci+P1oACxUYDrjK8WNwK0Byh8LcVC YcX2rkpLTCgE8vgHq//dYtv3UxR/PnM0/kB40yTI7YQK7uzLkiOIT2zOG7IcJcYXvWx9 svvF+udhW8twtggIodFPocpnmqtgNtBRvOXoZ6vH/X2Bn3SndN+7+y/VhOoSPZVkDZsf wg== Received: from nalasppmta03.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3j13v1j9tn-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 18 Aug 2022 04:17:22 +0000 Received: from nalasex01a.na.qualcomm.com (nalasex01a.na.qualcomm.com [10.47.209.196]) by NALASPPMTA03.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 27I4HI1S018163 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 18 Aug 2022 04:17:21 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 15.2.986.22; Wed, 17 Aug 2022 07:58:14 -0700 From: Akhil P Oommen To: freedreno , , , Rob Clark , Bjorn Andersson , "Stephen Boyd" , Dmitry Baryshkov CC: Douglas Anderson , , Akhil P Oommen , Andy Gross , Konrad Dybcio , Krzysztof Kozlowski , Michael Turquette , Rob Herring , Stephen Boyd , , , Subject: [PATCH v2 0/5] clk/qcom: Support gdsc collapse polling using 'reset' inteface Date: Wed, 17 Aug 2022 20:27:49 +0530 Message-ID: <1660748274-39239-1-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: nasanex01b.na.qualcomm.com (10.46.141.250) 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-GUID: 3P1GUtWu8JPrHUcEyEHZk5UsUB0eEMhe X-Proofpoint-ORIG-GUID: 3P1GUtWu8JPrHUcEyEHZk5UsUB0eEMhe X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.883,Hydra:6.0.517,FMLib:17.11.122.1 definitions=2022-08-18_02,2022-08-16_02,2022-06-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 impostorscore=0 mlxscore=0 clxscore=1015 malwarescore=0 mlxlogscore=674 bulkscore=0 phishscore=0 suspectscore=0 lowpriorityscore=0 priorityscore=1501 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2207270000 definitions=main-2208180014 Precedence: bulk List-ID: X-Mailing-List: linux-clk@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 linus's master branch. Related discussion: https://patchwork.freedesktop.org/patch/493144/ Changes in v2: - Return error when a particular custom reset op is not implemented. (Dmitry) Akhil P Oommen (5): 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 arm64: dts: qcom: sc7280: Add Reset support for gpu 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 +++ 7 files changed, 77 insertions(+), 4 deletions(-)