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=-2.2 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,USER_AGENT_SANE_2 autolearn=no 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 9878FC432C3 for ; Thu, 14 Nov 2019 13:46:19 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 6BC95206F4 for ; Thu, 14 Nov 2019 13:46:19 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="QsH4XRxY" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 6BC95206F4 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=collabora.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-i3c-bounces+linux-i3c=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Subject:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=YzJdyRgeT0ONlX/6Noep6pPitwC9kapQqzYg6ZoRAvg=; b=QsH4XRxYiL8S5E cZouy+Es+q/zvwhywf6qorI7XnWDdq2YWaEbKzRYq39H3LOLcV2CHfFwbb7tBraUsRfD2cnZqsPL0 yWJ9Z2mtKiwgHWocCbkJDFHapBecKNaOecmkoqCEBl3yRFg0uSoK8wEuDUm148dcmlk5HgZpwNNzm hzz1SW0/4eupJ47fUULkE/RPP0/aNmdzFxST+wTxPP1NTsTt7yh6JheLgeJqN1OI8XcPHQXwbVcMq kkuINdkDpA/FO6sRmHH0qiELW7B7CEHTTp1hgrC+R0buHYUWYck7S5PNurpXsR+boROYAL1ajNAiR RzuVcLRhg4VcP5y33rVw==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1iVFRz-0002IX-4l; Thu, 14 Nov 2019 13:46:19 +0000 Received: from bhuna.collabora.co.uk ([2a00:1098:0:82:1000:25:2eeb:e3e3]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1iVFRt-0002Hu-KL for linux-i3c@lists.infradead.org; Thu, 14 Nov 2019 13:46:16 +0000 Received: from localhost (unknown [IPv6:2a01:e0a:2c:6930:5cf4:84a1:2763:fe0d]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) (Authenticated sender: bbrezillon) by bhuna.collabora.co.uk (Postfix) with ESMTPSA id BF83F2916AE; Thu, 14 Nov 2019 13:46:11 +0000 (GMT) Date: Thu, 14 Nov 2019 14:46:08 +0100 From: Boris Brezillon To: Vitor Soares Subject: Re: [PATCH 0/3] Add data hold delay support Message-ID: <20191114144551.4187734f@gmail.com> In-Reply-To: References: <20191114055155.20446-1-pgaj@cadence.com> <20191114124855.GA13588@global.cadence.com> Organization: Collabora X-Mailer: Claws Mail 3.17.4 (GTK+ 2.24.32; x86_64-redhat-linux-gnu) MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191114_054613_794688_750E7DBA X-CRM114-Status: GOOD ( 14.32 ) X-BeenThere: linux-i3c@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux I3C List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Przemyslaw Gaj , "agolec@cadence.com" , "linux-i3c@lists.infradead.org" , "rafalc@cadence.com" , "bbrezillon@kernel.org" Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-i3c" Errors-To: linux-i3c-bounces+linux-i3c=archiver.kernel.org@lists.infradead.org On Thu, 14 Nov 2019 13:31:33 +0000 Vitor Soares wrote: > Hi, > > From: Przemyslaw Gaj > Date: Thu, Nov 14, 2019 at 12:48:56 > > > > There is new controller functionality which allows to meet SDA to SCL > > propagation time. Baisically, you can delay SDA propagation using this > > functionality to meet I3C MIPI spec timing. This is very useful for some > > SoC designs. > > > > From Spec: > > Table 75 of MIPI I3C Specification 1.0 (page 142) defines non-zero > > minimal tHD_PP timing on master output (Fig 65). This setting allows to > > meet this timing on master's soc outputs, regardless of PCB balancing. > > > > > > > > Best regards, > > > Vitor Soares > > > > -- > > -- > > Przemyslaw Gaj > > Thanks for pointing me the right place to read about it. > I would suggest you to put that info in the patch as well. I agree. The spec details should be mentioned in the commit message and in the code as well (in a comment). _______________________________________________ linux-i3c mailing list linux-i3c@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-i3c