linux-kernel - Re: USB Ethernet gadget on Nokia n900

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Date:	Sun, 26 Oct 2014 23:23:17 +0100
From:	Pali Rohár <pali.rohar@...il.com>
To:	Pavel Machek <pavel@....cz>
Cc:	Aaro Koskinen <aaro.koskinen@....fi>, Felipe Balbi <balbi@...com>,
	sre@...ian.org, sre@...g0.de,
	kernel list <linux-kernel@...r.kernel.org>,
	linux-arm-kernel@...ts.infradead.org, linux-omap@...r.kernel.org
Subject: Re: USB Ethernet gadget on Nokia n900

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@...il.com

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