From nobody Thu Nov 14 05:08:46 2024 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 09A99C4167B for ; Tue, 7 Nov 2023 04:47:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233513AbjKGErW (ORCPT ); Mon, 6 Nov 2023 23:47:22 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42606 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233548AbjKGErR (ORCPT ); Mon, 6 Nov 2023 23:47:17 -0500 Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E7EC0125; Mon, 6 Nov 2023 20:47:02 -0800 (PST) Received: from pps.filterd (m0279871.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 3A74cTje012075; Tue, 7 Nov 2023 04:46:49 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=qualcomm.com; h=from : to : cc : subject : date : message-id : in-reply-to : references; s=qcppdkim1; bh=q1YP6As28/DNiZ1rMHfpQ7Na6pvhlHyYJ8AyVuP5HQ4=; b=n6fSabKHv+iP57iuiGPIQbouTujVwEA3hTJ4YC/9Ghp1VeuvDLCJZlEMeJmDOobWQB0A 5Io4VG2rn/tShxbzo4TZJRihE4D6NK63E3a/OTSQPJkqLHYUkHZ9LuOldss6tyCQy6lS 7N3zkQpUfWjuKBuQKbatMIb0CrP3gUs3J+Rk6C/i5zrAvMPjiN8VOD/BnrqgwkGiDctJ mIc9/zZMwAODIfJrPY2YuN3SlVyxMgy91NMmNXiALp/Pmu9uXGOOPrm27k+i7Zy3e0ZM METcCR5p1U+6x/YDvl/bQVF5rIn2JPVCb0EPBt2j8yoI7RVkmY+r+b3Cm70HEfytjgDz gA== Received: from nasanppmta01.qualcomm.com (i-global254.qualcomm.com [199.106.103.254]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3u72r29gct-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 07 Nov 2023 04:46:48 +0000 Received: from pps.filterd (NASANPPMTA01.qualcomm.com [127.0.0.1]) by NASANPPMTA01.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTP id 3A74gL0l006772; Tue, 7 Nov 2023 04:46:47 GMT Received: from pps.reinject (localhost [127.0.0.1]) by NASANPPMTA01.qualcomm.com (PPS) with ESMTP id 3u6x85hsga-1; Tue, 07 Nov 2023 04:46:47 +0000 Received: from NASANPPMTA01.qualcomm.com (NASANPPMTA01.qualcomm.com [127.0.0.1]) by pps.reinject (8.17.1.5/8.17.1.5) with ESMTP id 3A74klJX013433; Tue, 7 Nov 2023 04:46:47 GMT Received: from stor-dylan.qualcomm.com (stor-dylan.qualcomm.com [192.168.140.207]) by NASANPPMTA01.qualcomm.com (PPS) with ESMTP id 3A74klqG013432; Tue, 07 Nov 2023 04:46:47 +0000 Received: by stor-dylan.qualcomm.com (Postfix, from userid 359480) id 4AB9820A78; Mon, 6 Nov 2023 20:46:47 -0800 (PST) From: Can Guo To: quic_cang@quicinc.com, bvanassche@acm.org, mani@kernel.org, stanley.chu@mediatek.com, adrian.hunter@intel.com, beanhuo@micron.com, avri.altman@wdc.com, junwoo80.lee@samsung.com, martin.petersen@oracle.com Cc: linux-scsi@vger.kernel.org, Andy Gross , Bjorn Andersson , Konrad Dybcio , "James E.J. Bottomley" , linux-arm-msm@vger.kernel.org (open list:ARM/QUALCOMM SUPPORT), linux-kernel@vger.kernel.org (open list) Subject: [PATCH v2 4/7] scsi: ufs: ufs-qcom: Limit HS-G5 Rate-A to hosts with HW version 5 Date: Mon, 6 Nov 2023 20:46:10 -0800 Message-Id: <1699332374-9324-5-git-send-email-cang@qti.qualcomm.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1699332374-9324-1-git-send-email-cang@qti.qualcomm.com> References: <1699332374-9324-1-git-send-email-cang@qti.qualcomm.com> 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: OOpA6zgtHp0qpBYNer8Ivyd4sfuqI5B3 X-Proofpoint-ORIG-GUID: OOpA6zgtHp0qpBYNer8Ivyd4sfuqI5B3 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.987,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2023-11-06_15,2023-11-02_03,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 bulkscore=0 adultscore=0 lowpriorityscore=0 suspectscore=0 malwarescore=0 clxscore=1015 phishscore=0 priorityscore=1501 mlxscore=0 spamscore=0 mlxlogscore=719 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2310240000 definitions=main-2311070038 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" From: Can Guo Qcom UFS hosts, with HW ver 5, can only support up to HS-G5 Rate-A due to HW limitations. If the HS-G5 PHY gear is used, update host_params->hs_rate to Rate-A, so that the subsequent power mode changes shall stick to Rate-A. Signed-off-by: Can Guo --- drivers/ufs/host/ufs-qcom.c | 18 +++++++++++++++++- 1 file changed, 17 insertions(+), 1 deletion(-) diff --git a/drivers/ufs/host/ufs-qcom.c b/drivers/ufs/host/ufs-qcom.c index 60b35ca..55ee31d 100644 --- a/drivers/ufs/host/ufs-qcom.c +++ b/drivers/ufs/host/ufs-qcom.c @@ -442,9 +442,25 @@ static u32 ufs_qcom_get_hs_gear(struct ufs_hba *hba) static int ufs_qcom_power_up_sequence(struct ufs_hba *hba) { struct ufs_qcom_host *host =3D ufshcd_get_variant(hba); + struct ufs_host_params *host_params =3D &host->host_params; struct phy *phy =3D host->generic_phy; + enum phy_mode mode; int ret; =20 + /* + * HW ver 5 can only support up to HS-G5 Rate-A due to HW limitations. + * If the HS-G5 PHY gear is used, update host_params->hs_rate to Rate-A, + * so that the subsequent power mode change shall stick to Rate-A. + */ + if (host->hw_ver.major =3D=3D 0x5) { + if (host->phy_gear =3D=3D UFS_HS_G5) + host_params->hs_rate =3D PA_HS_MODE_A; + else + host_params->hs_rate =3D PA_HS_MODE_B; + } + + mode =3D host_params->hs_rate =3D=3D PA_HS_MODE_B ? PHY_MODE_UFS_HS_B : P= HY_MODE_UFS_HS_A; + /* Reset UFS Host Controller and PHY */ ret =3D ufs_qcom_host_reset(hba); if (ret) @@ -459,7 +475,7 @@ static int ufs_qcom_power_up_sequence(struct ufs_hba *h= ba) return ret; } =20 - phy_set_mode_ext(phy, PHY_MODE_UFS_HS_B, host->phy_gear); + phy_set_mode_ext(phy, mode, host->phy_gear); =20 /* power on phy - start serdes and phy's power and clocks */ ret =3D phy_power_on(phy); --=20 2.7.4