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=-2.5 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 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 CBF74C18E5B for ; Tue, 17 Mar 2020 13:48:31 +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 9C7F220757 for ; Tue, 17 Mar 2020 13:48:31 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="TleWyV1V"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="ZvZB2iYW" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 9C7F220757 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=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:In-Reply-To:MIME-Version:References: 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=S8V+ujuyH5uTSE9zUlpLNhd6v7mJkYB0ECr4Pyo4+TM=; b=TleWyV1V25aP9O 2xIUTKhqZiZEWnBOLYmG3BehAHrUHas8Y0mx/limsEa3M0s2Hw4A5DC7aJQsQL6v61qpAhQv3DSCg bfsNv7PwLQDDO11hqZN0Lyun55EIq3uNuGHwm8NeHY75FT5EarMEwr+o1IEDvLI3C4lKh3esBHBTY w5shoPJGCE1A+66lX3kWs1Zw5kx8Oq6uSOVxmtsrpzEMS7OvsbEDoFol0CQdopH+IZj/4qfeDjDNc SM1sy7o/P+J7RfPXSzV5KEYWucoKjAe0cI5MFdbjeRM2b+FOQfM8mixKzDRFbdAtDts77aSO/SmrZ w5EuDAJfHviDVR4ok7bw==; 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 1jECa6-0004mU-Kt; Tue, 17 Mar 2020 13:48:30 +0000 Received: from mail.kernel.org ([198.145.29.99]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1jECa3-0004mA-FD for linux-arm-kernel@lists.infradead.org; Tue, 17 Mar 2020 13:48:29 +0000 Received: from dragon (unknown [80.251.214.228]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 836CD20768; Tue, 17 Mar 2020 13:48:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1584452906; bh=rCO+UV0SMy75dHmmKruSDqVSDZVRCAwWZSWTLRHw9hI=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=ZvZB2iYWqd3xsGEOgO6V9FzgjlgZuhfVnj8xGbqKb82ZhgveOAr6Eq/HPXQt2z/yR PhJbD3s7qfH8YLqgJZOaAVUqEODkR3CJlgadw5MslnLhlxzY7k1Ngo5tsDavcUFUJX 4a6wMeAGGzBbfGGaHwWtq/Iu38eRswUWnaZG5LDo= Date: Tue, 17 Mar 2020 21:48:13 +0800 From: Shawn Guo To: Waibel Georg Subject: Re: [PATCH] clk: imx: imx6ul: change flexcan clock to support CiA bitrates Message-ID: <20200317134810.GA2884@dragon> References: <1583928220724.65021@wiedemann-group.com> <20200316013040.GP17221@dragon> <1584352502593.54297@wiedemann-group.com> <1584352708854.43164@wiedemann-group.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <1584352708854.43164@wiedemann-group.com> User-Agent: Mutt/1.9.4 (2018-02-28) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200317_064827_530970_A3CF36D9 X-CRM114-Status: GOOD ( 13.09 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Stephen Boyd , Michael Turquette , NXP Linux Team , Michel Alex , Appelt Andreas , Sascha Hauer , "linux-arm-kernel@lists.infradead.org" Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Mon, Mar 16, 2020 at 09:58:28AM +0000, Waibel Georg wrote: > On Mon, 16 Mar 2020 at 02:30, Shawn Guo wrote: > > On Wed, Mar 11, 2020 at 12:03:40PM +0000, Waibel Georg wrote: > > > Setting a CAN bitrate of 800kbit/s fails with a bitrate error of 1.3% if the > > > flexcan module is clocked at 30MHz (CAN_CLK_ROOT). This patch changes the clock > > > frequency from 30MHz to 40MHz which allows to support all bitrates recommended > > > > But code changes IMX6UL_CLK_PLL3_60M to IMX6UL_CLK_PLL3_80M? Or > > IMX6UL_CLK_CAN_SEL is different from CAN_CLK_ROOT in the context? > > Correct. The patch sets CAN_CLK_SEL to 80MHZ. There is a post-divider > CAN_CLK_PODF which is set to /2 by default which makes the 40MHz > CAN_CLK_ROOT. Could you add this into commit log to make it clear? Shawn _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel