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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 94FE1C4167B for ; Mon, 6 Nov 2023 17:56:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231989AbjKFR4e (ORCPT ); Mon, 6 Nov 2023 12:56:34 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41764 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229567AbjKFR4b (ORCPT ); Mon, 6 Nov 2023 12:56:31 -0500 Received: from mail-pl1-f181.google.com (mail-pl1-f181.google.com [209.85.214.181]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7670D99; Mon, 6 Nov 2023 09:56:29 -0800 (PST) Received: by mail-pl1-f181.google.com with SMTP id d9443c01a7336-1cc3c51f830so35102795ad.1; Mon, 06 Nov 2023 09:56:29 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1699293388; x=1699898188; h=content-transfer-encoding:in-reply-to:from:references:cc:to :content-language:subject:user-agent:mime-version:date:message-id :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=m2JiLGU3s2KC5CtuIF/v5v0hrQFMexnAPPTq2XcVAbU=; b=faceN5SnOQATyVbwfLk+WX4wCVXmjFqxhsuoCIKkyxI+9ZM9ZGKZUffecTM5GvH4At L7uhDBYoTKOsdlKUG+mU7GK+JXpj5FAk4BmhyiTrrHbBxaOOAldA+SkXHg71ysownnNf RSjid2286FWOrTV1LSE9nYQMPW0Ezipgf2nBvokOxDbwbrj+rtFHuRdRboiR25Vc5gcR SOsdyX/GauTADPjIaMGOYOwrrsxfKTCwyV8STqKy4Dp9+7Z+m60Bh1M6OKX442tazWll 45tfv/sB309XpxhP3xBOtAZNrEZELA1rdEYCcVBE28FcDrF7jcqQa2ce8bMHhanJVllF or8w== X-Gm-Message-State: AOJu0Ywe+uI6HT0OOvtJcxLHY7T+6xvDsu3ph6IYtInQCnV2ShCDbJD2 p346ebcoeXAGahAHmwIrzPVUO+goQpA= X-Google-Smtp-Source: AGHT+IFIwKD7s3sm65uE7HT8rxOzB6AZxTRmE3vQkBIYawoH5/ytsoH4xg0bWJUM7sJt3cSmSdVFAQ== X-Received: by 2002:a17:902:6803:b0:1c9:ca02:645c with SMTP id h3-20020a170902680300b001c9ca02645cmr20888180plk.36.1699293388064; Mon, 06 Nov 2023 09:56:28 -0800 (PST) Received: from ?IPV6:2620:0:1000:8411:ac50:9303:758b:edb9? ([2620:0:1000:8411:ac50:9303:758b:edb9]) by smtp.gmail.com with ESMTPSA id jj19-20020a170903049300b001b86dd825e7sm6191205plb.108.2023.11.06.09.56.25 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 06 Nov 2023 09:56:27 -0800 (PST) Message-ID: <5850d5ac-e735-4358-866d-f410b00ba39d@acm.org> Date: Mon, 6 Nov 2023 09:56:23 -0800 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] dt-bindings: ufs: Add msi-parent for UFS MCQ Content-Language: en-US To: Rob Herring , Ziqi Chen Cc: quic_asutoshd@quicinc.com, quic_cang@quicinc.com, mani@kernel.org, beanhuo@micron.com, avri.altman@wdc.com, junwoo80.lee@samsung.com, martin.petersen@oracle.com, quic_nguyenb@quicinc.com, quic_nitirawa@quicinc.com, quic_rampraka@quicinc.com, linux-scsi@vger.kernel.org, Alim Akhtar , Krzysztof Kozlowski , Conor Dooley , Ulf Hansson , Wolfram Sang , Guenter Roeck , Miquel Raynal , Mark Brown , "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" , open list References: <1698835699-28550-1-git-send-email-quic_ziqichen@quicinc.com> <20231106144831.GA317907-robh@kernel.org> From: Bart Van Assche In-Reply-To: <20231106144831.GA317907-robh@kernel.org> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 11/6/23 06:48, Rob Herring wrote: > On Wed, Nov 01, 2023 at 06:48:13PM +0800, Ziqi Chen wrote: >> The Message Signaled Interrupts (MSI) has been introduced >> to UFS driver since the MCQ be enabled. > > Not really relevant when a driver supported MSI, but the when the h/w > did. Has UFS always supported MSI? It was added in some version of the > spec? MSI support has been introduced in UFSHCI version 4.0 and I think that the controller vendor can decide whether or not to implement MSI. Does this mean that the patch needs to be improved? Thanks, Bart.