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Date:      Mon, 31 Dec 2012 18:23:11 -0800
From:      Stephen Hurd <shurd@sasktel.net>
To:        freebsd-arm <freebsd-arm@freebsd.org>
Subject:   Re: Rpi boot process stuck on mountroot
Message-ID:  <50E2488F.6010506@sasktel.net>
In-Reply-To: <57772D20A1814967B7FFDC476215780B@ad.peach.ne.jp>
References:  <CALCpEUGXc_Dp=BG5dTLBkMR3P30kgNnzpWzHuW2Xx-Qs0XjZvw@mail.gmail.com> <1357002062.54953.135.camel@revolution.hippie.lan> <06BF94A3-6F02-4E4B-8572-D202E5C8CB4B@kientzle.com> <57772D20A1814967B7FFDC476215780B@ad.peach.ne.jp>

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Daisuke Aoyama wrote:
> There is two factor.
> One of is dev/mmc never check an error condition of the result.
> Other is RPI does not work 50MHz with some SD cards.
> I have posted the workaround patch today.
>
> http://lists.freebsd.org/pipermail/freebsd-arm/2013-January/004507.html

Another thing to consider is the power.  When voltage levels between TP1
and TP2 are below around 4.6V, I see a lot more of this failure.



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