From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andre Puschmann Subject: MMC not working reliably for Gumstix Overo Tide Date: Sat, 10 Dec 2011 01:45:16 +0100 Message-ID: Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: Received: from lo.gmane.org ([80.91.229.12]:42251 "EHLO lo.gmane.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752762Ab1LJApc (ORCPT ); Fri, 9 Dec 2011 19:45:32 -0500 Received: from list by lo.gmane.org with local (Exim 4.69) (envelope-from ) id 1RZB4D-0006Gc-A4 for linux-omap@vger.kernel.org; Sat, 10 Dec 2011 01:45:29 +0100 Received: from dslb-178-005-127-249.pools.arcor-ip.net ([178.5.127.249]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Sat, 10 Dec 2011 01:45:29 +0100 Received: from andre.puschmann by dslb-178-005-127-249.pools.arcor-ip.net with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Sat, 10 Dec 2011 01:45:29 +0100 Sender: linux-omap-owner@vger.kernel.org List-Id: linux-omap@vger.kernel.org To: linux-omap@vger.kernel.org Hi list, I've got a Gumstix Overo Tide (OMAP 3530) based board here which doesn't have NAND and therefore needs the MMC to boot. I've successfully built a kernel using Tony's master branch. The system boots fine up to the point where the MMC driver loads (well, I guess that is where the problem lies). I am using omap2plus_defconfig. The weird thing is that sometimes the system hangs after printing "Waiting for root device /dev/mmcblk0p2..." and sometimes after mounting the rootfs. Any ideas? I've seen some probelms with MMC in the recent past, could that be the cause? Thanks in advance. Cheers, Andre Kernel log: [ 2.092224] Waiting for root device /dev/mmcblk0p2... [ 2.271026] mmc0: host does not support reading read-only switch. assuming write-enable. [ 2.282379] mmc0: new high speed SDHC card at address b368 [ 2.292053] mmcblk0: mmc0:b368 USD 14.9 GiB [ 2.303894] mmcblk0: p1 p2 [ 2.341644] EXT4-fs (mmcblk0p2): mounted filesystem with ordered data mode. Opts: (null) [ 2.350891] VFS: Mounted root (ext4 filesystem) readonly on device 179:2. [ 2.358917] Freeing init memory: 208K .. nothing happens here ..