From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id BB04EC43461 for ; Tue, 15 Sep 2020 07:15:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2F35420897 for ; Tue, 15 Sep 2020 07:15:07 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=samsung.com header.i=@samsung.com header.b="KaE+RVno" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726125AbgIOHPG (ORCPT ); Tue, 15 Sep 2020 03:15:06 -0400 Received: from mailout4.samsung.com ([203.254.224.34]:38372 "EHLO mailout4.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726107AbgIOHPF (ORCPT ); Tue, 15 Sep 2020 03:15:05 -0400 Received: from epcas1p4.samsung.com (unknown [182.195.41.48]) by mailout4.samsung.com (KnoxPortal) with ESMTP id 20200915071502epoutp04659894db838198a19f061ee62458c145~0462TwM4C3039530395epoutp043 for ; Tue, 15 Sep 2020 07:15:02 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 mailout4.samsung.com 20200915071502epoutp04659894db838198a19f061ee62458c145~0462TwM4C3039530395epoutp043 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=samsung.com; s=mail20170921; t=1600154102; bh=DduciN/JwcnwqiVl5IpPOg+0xjvc7x2ue/tjaNhaSYA=; h=Subject:Reply-To:From:To:CC:In-Reply-To:Date:References:From; b=KaE+RVnowPMqIGz9bI6lqDRt70JmC/Vz6+zjtzfbtNk7lldGHTnVEj58do3xdjZWA JeNpJVWiNa+uivbnR2xnhu+ZM77RjKkWj+VueS5HFJysXlQ9GFY5/kbEkC8b4r/Mhx tPI1AqUYVgSn4pCuLUx3xS6Olh/5zFujDJEPr2JY= Received: from epcpadp1 (unknown [182.195.40.11]) by epcas1p3.samsung.com (KnoxPortal) with ESMTP id 20200915071501epcas1p32ec33830c4ffae37f585cb1a6220b37d~0461u7IbB0453704537epcas1p3C; Tue, 15 Sep 2020 07:15:01 +0000 (GMT) Mime-Version: 1.0 Subject: RE: [PATCH] scsi: ufs: Fix NOP OUT timeout value Reply-To: daejun7.park@samsung.com From: Daejun Park To: Avri Altman , Daejun Park , "jejb@linux.ibm.com" , "martin.petersen@oracle.com" , "asutoshd@codeaurora.org" , "beanhuo@micron.com" , "stanley.chu@mediatek.com" , "cang@codeaurora.org" , "bvanassche@acm.org" , ALIM AKHTAR CC: "linux-scsi@vger.kernel.org" , "linux-kernel@vger.kernel.org" , Sang-yoon Oh , Sung-Jun Park , yongmyung lee , Jinyoung CHOI , Adel Choi , SEUNGUK SHIN X-Priority: 3 X-Content-Kind-Code: NORMAL In-Reply-To: X-CPGS-Detection: blocking_info_exchange X-Drm-Type: N,general X-Msg-Generator: Mail X-Msg-Type: PERSONAL X-Reply-Demand: N Message-ID: <231786897.01600154101631.JavaMail.epsvc@epcpadp1> Date: Tue, 15 Sep 2020 16:08:22 +0900 X-CMS-MailID: 20200915070822epcms2p860645039610710de7c5acc829d9f9862 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="utf-8" X-Sendblock-Type: AUTO_CONFIDENTIAL X-CPGSPASS: Y X-CPGSPASS: Y X-Hop-Count: 3 X-CMS-RootMailID: 20200902025852epcms2p2a2d4ac934f4fc09233d4272c96df9ff1 References: <231786897.01599016081767.JavaMail.epsvc@epcpadp2> Sender: linux-scsi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org Hi Avri, > > In some Samsung UFS devices, there is some booting fail issue with > > low-power UFS device. The reason of this issue is the UFS device has a > > little bit longer latency for NOP OUT response. It causes booting fail > > because NOP OUT command is issued during initialization to check whether > > the device transport protocol is ready or not. This issue is resolved by > > releasing NOP_OUT_TIMEOUT value. > > > > NOP_OUT_TIMEOUT: 30ms -> 50ms > > > > Signed-off-by: Daejun Park > Acked-by: Avri Altman Thanks for the review. Bart, Could you review this patch, please? Thanks, Daejun