On Sunday 26 October 2014 22:55:48 Pavel Machek wrote:
> > > I have root prepared on /dev/mmcblk0p6. I tried 3.17 with
> > > rx51_defconfig, but no, it refuses to mount it.
> > > 
> > > VFS: Cannot open root device "mmcblk0p6" or ....: error
> > > -19.
> > > 
> > > And then it proceeds to list mmcblk0p6 as one of available
> > > options
> > > 
> > > :-(.
> > > 
> > > Ideas welcome.
> > 
> > Try to add rootdelay=30 or rootwait to kernel cmdline.
> 
> I had rootdelay=3. Will try rootwait... no change. This is
> v3.17 with rx51_defconfig. CONFIG_MACH_NOKIA_RX51=y => device
> tree will not be used AFAICT.
> 
> Now I'm back at 3.14 without device tree; same setup works
> there. I tried disabling RX51 support in 3.14 (to make it
> boot using device tree) but that did not work.
> 								Pavel

I remember that there was some problem with initializing mmc 
device. Sometimes something failed and reading from eMMC was not 
possible. Try to boot kernel from uboot. Maybe it can help.

-- 
Pali Rohár
pali.rohar@gmail.com