From patchwork Mon Mar 27 16:41:19 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mukesh Ojha X-Patchwork-Id: 667652 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 6F47FC77B6C for ; Mon, 27 Mar 2023 16:43:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229986AbjC0Qm3 (ORCPT ); Mon, 27 Mar 2023 12:42:29 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56980 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232488AbjC0Qly (ORCPT ); Mon, 27 Mar 2023 12:41:54 -0400 Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 646C4271E; Mon, 27 Mar 2023 09:41:51 -0700 (PDT) Received: from pps.filterd (m0279868.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 32RDv4BU015017; Mon, 27 Mar 2023 16:41:48 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=WBWxgfw1drJhnxfAO2rN43QRoy939GS0Cvk3nm2plig=; b=ZLtWQLMDnuE9j9VtCphYcvdC7H3nVVw23nBKbCghUt0+9Q7T0gIbji6UsRfsXQ2MAXNN 1Icmwg4oov1BtnJuT7pj9NSyzhq/6Gex1EorhVh+iJpAEfeWTMbOTP5uOOse6CGsohhD rWsO6nibtVNBIeYDumVtv5gNKQ3+sK3Q/EsC/Jq8D1EvUNi/cg6rlv8U92DS5NtAMnxz 4kzA7rD4LWiao40rdIu6n2Qkfcx6t8mMY8biq1Ohbzc4rIK9mVKj7Cnu+b4a6OdZmFLC 07M2DzPCcTht5kxbI/APIP1NgBoshdqj2VKjignOfrGOKIJG7YidoQsHhSG+NvoSTIdW lA== Received: from nasanppmta01.qualcomm.com (i-global254.qualcomm.com [199.106.103.254]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3pkby48k0u-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 27 Mar 2023 16:41:48 +0000 Received: from nasanex01c.na.qualcomm.com (nasanex01c.na.qualcomm.com [10.45.79.139]) by NASANPPMTA01.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 32RGfl1j022812 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 27 Mar 2023 16:41:47 GMT Received: from hu-mojha-hyd.qualcomm.com (10.80.80.8) by nasanex01c.na.qualcomm.com (10.45.79.139) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.41; Mon, 27 Mar 2023 09:41:44 -0700 From: Mukesh Ojha To: , , , CC: , , , Mukesh Ojha , Poovendhan Selvaraj Subject: [PATCH v4 3/5] firmware: scm: Modify only the download bits in TCSR register Date: Mon, 27 Mar 2023 22:11:19 +0530 Message-ID: <1679935281-18445-4-git-send-email-quic_mojha@quicinc.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1679935281-18445-1-git-send-email-quic_mojha@quicinc.com> References: <1679935281-18445-1-git-send-email-quic_mojha@quicinc.com> MIME-Version: 1.0 X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01b.na.qualcomm.com (10.46.141.250) To nasanex01c.na.qualcomm.com (10.45.79.139) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-ORIG-GUID: dL0mLgZziigV_OZ2r9BkioyTvvUzIk3W X-Proofpoint-GUID: dL0mLgZziigV_OZ2r9BkioyTvvUzIk3W 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=2023-03-24_11,2023-03-27_02,2023-02-09_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 lowpriorityscore=0 malwarescore=0 spamscore=0 suspectscore=0 bulkscore=0 impostorscore=0 phishscore=0 mlxlogscore=999 mlxscore=0 adultscore=0 priorityscore=1501 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2303200000 definitions=main-2303270134 Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org CrashDump collection is based on the DLOAD bit of TCSR register. To retain other bits, we read the register and modify only the DLOAD bit as the other bits have their own significance. Signed-off-by: Poovendhan Selvaraj Signed-off-by: Mukesh Ojha --- drivers/firmware/qcom_scm.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/drivers/firmware/qcom_scm.c b/drivers/firmware/qcom_scm.c index 431fe1f..3c6c5e7 100644 --- a/drivers/firmware/qcom_scm.c +++ b/drivers/firmware/qcom_scm.c @@ -30,6 +30,9 @@ module_param(download_mode, bool, 0); #define SCM_HAS_IFACE_CLK BIT(1) #define SCM_HAS_BUS_CLK BIT(2) +#define QCOM_DOWNLOAD_MODE_MASK 0x30 +#define QCOM_DOWNLOAD_FULLDUMP 0x1 + struct qcom_scm { struct device *dev; struct clk *core_clk; @@ -448,8 +451,9 @@ static void qcom_scm_set_download_mode(bool enable) if (avail) { ret = __qcom_scm_set_dload_mode(__scm->dev, enable); } else if (__scm->dload_mode_addr) { - ret = qcom_scm_io_writel(__scm->dload_mode_addr, - enable ? QCOM_SCM_BOOT_SET_DLOAD_MODE : 0); + ret = qcom_scm_io_update_field(__scm->dload_mode_addr, + QCOM_DOWNLOAD_MODE_MASK, + enable ? QCOM_DOWNLOAD_FULLDUMP : 0); } else { dev_err(__scm->dev, "No available mechanism for setting download mode\n");