From owner-freebsd-arm@FreeBSD.ORG Fri Sep 27 17:11:57 2013 Return-Path: Delivered-To: freebsd-arm@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTP id 1B7892E0 for ; Fri, 27 Sep 2013 17:11:57 +0000 (UTC) (envelope-from ticso@cicely7.cicely.de) Received: from raven.bwct.de (raven.bwct.de [85.159.14.73]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.freebsd.org (Postfix) with ESMTPS id 8722E2E94 for ; Fri, 27 Sep 2013 17:11:56 +0000 (UTC) Received: from mail.cicely.de ([10.1.1.37]) by raven.bwct.de (8.13.4/8.13.4) with ESMTP id r8RHBs4L025489 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=FAIL); Fri, 27 Sep 2013 19:11:54 +0200 (CEST) (envelope-from ticso@cicely7.cicely.de) Received: from cicely7.cicely.de (cicely7.cicely.de [10.1.1.9]) by mail.cicely.de (8.14.5/8.14.4) with ESMTP id r8RHBhCJ022805 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Fri, 27 Sep 2013 19:11:43 +0200 (CEST) (envelope-from ticso@cicely7.cicely.de) Received: from cicely7.cicely.de (localhost [127.0.0.1]) by cicely7.cicely.de (8.14.2/8.14.2) with ESMTP id r8RHBhmk083393; Fri, 27 Sep 2013 19:11:43 +0200 (CEST) (envelope-from ticso@cicely7.cicely.de) Received: (from ticso@localhost) by cicely7.cicely.de (8.14.2/8.14.2/Submit) id r8RHBhPv083392; Fri, 27 Sep 2013 19:11:43 +0200 (CEST) (envelope-from ticso) Date: Fri, 27 Sep 2013 19:11:43 +0200 From: Bernd Walter To: Martin Laabs Subject: Re: Raspberry PI sporadically fails to mount mmc card Message-ID: <20130927171142.GB82284@cicely7.cicely.de> References: <521D92CA.8050008@martinlaabs.de> <20130927170246.GA82284@cicely7.cicely.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20130927170246.GA82284@cicely7.cicely.de> X-Operating-System: FreeBSD cicely7.cicely.de 7.0-STABLE i386 User-Agent: Mutt/1.5.11 X-Spam-Status: No, score=-2.9 required=5.0 tests=ALL_TRUSTED=-1, BAYES_00=-1.9, T_RP_MATCHES_RCVD=-0.01 autolearn=unavailable version=3.3.0 X-Spam-Checker-Version: SpamAssassin 3.3.0 (2010-01-18) on spamd.cicely.de Cc: freebsd-arm X-BeenThere: freebsd-arm@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list Reply-To: ticso@cicely.de List-Id: Porting FreeBSD to the StrongARM Processor List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 27 Sep 2013 17:11:57 -0000 On Fri, Sep 27, 2013 at 07:02:47PM +0200, Bernd Walter wrote: > On Wed, Aug 28, 2013 at 08:03:54AM +0200, Martin Laabs wrote: > > Hi, > > > > Sporadically the raspberry pi fails to mount its root mmc card. After power > > off and power on again it works most of the time. However there seem to be > > also configurations that fail permanently. Unfortunately I have no image of > > a sd card that fails on every boot. > > I see a similar very strange thing. > > 6 Raspi (256MB Eth Version) bought at the same time from same batch. > 6 identic 8GB Transcent SD cards bought at the same time and likely > also same batch. > > Used one card to copy crochet build image from r255729 source. > Booting fine, but identified as 1bit: > mmcsd0: 8GB at mmc0 25.0MHz/1bit/65535-block > On reboot it fails, but works on next boot without power down. > > I'd tuned the installation and copy'ed the card to the 5 others. > None of the others were booting in the other raspi boards, but the > original card still worked in the original raspi. > All systems are running with power from same USB-hub. > Then I'd placed the working card in anther raspi and it failed as > well: > mmcsd0: 8GB at mmc0 50.0MHz/4bit/65535-block > mmcsd0: Error indicated: 1 Timeout > However it is probed with 4bit and higher bitrate. > This must be a very marginal problem when identic systems either > work or not. > Since the working condition is probed as 1 bit I wonder if there > is a generel 4 bit problem and addtional this single combo probes > wrong as 1 bit? Another combo is working. This time with 4bit and 25MHz: mmcsd0: 8GB at mmc0 25.0MHz/4bit/65535-block -- B.Walter http://www.bwct.de Modbus/TCP Ethernet I/O Baugruppen, ARM basierte FreeBSD Rechner uvm.