From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by yocto-www.yoctoproject.org (Postfix, from userid 118) id 1CF0BE0094C; Mon, 8 Jun 2015 09:29:25 -0700 (PDT) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on yocto-www.yoctoproject.org X-Spam-Level: X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00 autolearn=ham version=3.3.1 X-Spam-HAM-Report: * -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% * [score: 0.0000] Received: from mail.chez-thomas.org (mail.mlbassoc.com [65.100.170.105]) by yocto-www.yoctoproject.org (Postfix) with ESMTP id 53A5FE00496 for ; Mon, 8 Jun 2015 09:29:22 -0700 (PDT) Received: by mail.chez-thomas.org (Postfix, from userid 1998) id 634ECF811E6; Mon, 8 Jun 2015 10:29:21 -0600 (MDT) Received: from [192.168.1.114] (zeus [192.168.1.114]) by mail.chez-thomas.org (Postfix) with ESMTP id F2FC4F811E5; Mon, 8 Jun 2015 10:29:20 -0600 (MDT) Message-ID: <5575C2E4.7030805@mlbassoc.com> Date: Mon, 08 Jun 2015 10:29:24 -0600 From: Gary Thomas User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.7.0 MIME-Version: 1.0 To: meta-freescale@yoctoproject.org References: <1433767686-4472-1-git-send-email-schnitzeltony@googlemail.com> <1433767686-4472-2-git-send-email-schnitzeltony@googlemail.com> <5575C074.4040902@boundarydevices.com> In-Reply-To: <5575C074.4040902@boundarydevices.com> Subject: Re: [meta-fsl-arm/V2][PATCH 1/2] linux-imx_3.14.28: fix initial MMC device detection X-BeenThere: meta-freescale@yoctoproject.org X-Mailman-Version: 2.1.13 Precedence: list List-Id: Usage and development list for the meta-fsl-* layers List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 08 Jun 2015 16:29:25 -0000 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit On 2015-06-08 10:19, Eric Nelson wrote: > Hi Andreas, > > On 06/08/2015 05:48 AM, Andreas Müller wrote: >> On Variscite Varsom we have three devices connected to MMC >> >> * MMC1: eMMC >> * MMC2: SDCard >> * MMC3: Wifi >> >> Without this patch only the first device was detected properly. >> I found two workarounds which can be removed by this patch: >> >> 1. Variscite: booting from SDCard made possible by renumbering MMC devices [1]. >> 2. BoundaryDevices: Add workqueues for each mmc_host [2]. This had been tested >> here too but causes crashing sdcard for huge storage traffic. Can you (Andreas) elaborate on this? Is there a procedure to show this failure? I'd like to test it on my board(s) that have multiple [active] MMC devices. >> >> [1] https://github.com/varigit/linux-2.6-imx/blob/imx_3.10.53_1.1.0_ga_var01/arch/arm/boot/dts/imx6qdl.dtsi / Line 879 >> [2] https://github.com/boundarydevices/linux-imx6/commit/1d40159a995a298f16901bfb14ae3e0294c65691 -- ------------------------------------------------------------ Gary Thomas | Consulting for the MLB Associates | Embedded world ------------------------------------------------------------