Re: emmc power select failure

2012-05-20 Thread Marc Dietrich
Hi Shashidhar, ok, now that the bus width switch error became fatal in recent kernels, the problem started to became painful... I added some debug printks to the mmc_switch function in mmc_ops.c: [1.433253] sdhci: Secure Digital Host Controller Interface driver [1.442993] sdhci: Copyrig

Re: emmc power select failure

2012-04-16 Thread Marc Dietrich
On Monday 16 April 2012 15:25:55 Shashidhar Hiremath wrote: > Hi, > is the 8bit bus width supported by the hardware ? yes. I works with just fine with a chromeos 3.0 kernel and 3.1 kernel (from nv- tegra.nvidia.com). Marc > > On Fri, Apr 13, 2012 at 11:29 PM, Marc Dietrich wrote: > > Hi, > >

Re: emmc power select failure

2012-04-16 Thread Shashidhar Hiremath
Hi, is the 8bit bus width supported by the hardware ? On Fri, Apr 13, 2012 at 11:29 PM, Marc Dietrich wrote: > 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" war

emmc power select failure

2012-04-13 Thread Marc Dietrich
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: 4800 Hz actual clock: 4800 Hz vdd:20 (3.2