From: Pierre Ossman <drzeus-mmc@drzeus.cx>
To: Manuel Lauss <mano@roarinelk.homelinux.net>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Investigating SD card failures
Date: Fri, 27 Jul 2007 16:30:35 +0200 [thread overview]
Message-ID: <20070727163035.4ec23c19@poseidon.drzeus.cx> (raw)
In-Reply-To: <20070727055026.GB27423@roarinelk.homelinux.net>
On Fri, 27 Jul 2007 07:50:26 +0200
Manuel Lauss <mano@roarinelk.homelinux.net> wrote:
> Hi Pierre,
>
> I have a 1GB SanDisk SD card here which linux does not recognize.
> Looking at the MMC debug output, I see the MMC core repeatedly
> issues CMD55/CMD41 commands (which all succeed!) then stops
> after 100 times. In sd_ops.c the code checks for a bit to get set.
> My question is, what exactly is this bit supposed to indicate?
>
That the card has initialized. Try extending the time that loop runs and see if the card powers up.
--
-- Pierre Ossman
Linux kernel, MMC maintainer http://www.kernel.org
PulseAudio, core developer http://pulseaudio.org
rdesktop, core developer http://www.rdesktop.org
next prev parent reply other threads:[~2007-07-27 14:30 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-07-27 5:50 Investigating SD card failures Manuel Lauss
2007-07-27 14:30 ` Pierre Ossman [this message]
2007-07-27 16:00 ` Manuel Lauss
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