From mboxrd@z Thu Jan 1 00:00:00 1970 From: Marc Dietrich Subject: emmc power select failure Date: Fri, 13 Apr 2012 19:59:29 +0200 Message-ID: <1721770.czJDhHnFDk@ax5200p> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7Bit Return-path: Received: from mailout-de.gmx.net ([213.165.64.22]:59920 "HELO mailout-de.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1752808Ab2DMSAD (ORCPT ); Fri, 13 Apr 2012 14:00:03 -0400 Sender: linux-mmc-owner@vger.kernel.org List-Id: linux-mmc@vger.kernel.org To: linux-mmc@vger.kernel.org Hi, I'm running linux-next on a tegra-sdhci host which has a Toshiba THGBM2G6D2FBAI9 eMMC connected. During boot I get a "mmc1: power class selection to bus width 8 failed" warning. /sys/kernel/debug/mmc1# cat ios clock: 48000000 Hz actual clock: 48000000 Hz vdd: 20 (3.2 ~ 3.3 V) bus mode: 2 (push-pull) chip select: 0 (don't care) power mode: 2 (on) bus width: 3 (8 bits) timing spec: 1 (mmc high-speed) Any hints? Thanks! Marc