From: "Eugene Ilkov" <e.ilkov@gmail.com>
To: "Pierre Ossman" <drzeus-list@drzeus.cx>
Cc: linux-kernel@vger.kernel.org
Subject: Re: 2.6.20 mmc: problem with highspeed SD card
Date: Thu, 15 Feb 2007 15:17:23 +0300 [thread overview]
Message-ID: <e13597370702150417o3888b71dtcc42e38156b46918@mail.gmail.com> (raw)
In-Reply-To: <45D3F41C.3020600@drzeus.cx>
On 2/15/07, Pierre Ossman <drzeus-list@drzeus.cx> wrote:
> Eugene Ilkov wrote:
> > I have I/O errors with Transcend SD highspeed card 2GB/150x when it's
> > mounted in r/w mode (cardreader on sharp sl-c1000)
> > It works well if I reverse mmcv4 patch commited to 2.6.19-git2
> > (http://lkml.org/lkml/2006/10/4/27)
>
> That patch is not the same as you are referencing in the rest of your mail.
I geuss changes was started from that patch, I mean changes that comes
with that:
http://www.linuxhq.com/kernel/v2.6/19-git2/drivers/mmc/mmc.c
I found another related patch
http://mailman.laptop.org/pipermail/commits-kernel/2007-January/000554.html
so i guess i'm not alone
>
> > I'm not experienced in mmc, but I figured out that problem is
> > somewhere in mmc_read_switch_caps() and when i change cmd.arg value
> > from 0x80FFFFF1 to 0x00FFFFF1 it works fine too
> > What argument should have SD_SWITCH opcode?
> >
>
> The argument is correct, so I'm guessing that your controller might be a bit
> flaky and not handle the new timing.
> Can you enable MMC_DEBUG and send over the
> dmesg?
mmc debug output is too noisy
and i can give you only this:
mmc0: starting CMD18 arg 30007e00 flags 00000035
PXAMCI: irq 00000004 stat 00002140
PXAMCI: irq 00000005 stat 00002940
PXAMCI: irq 00000007 stat 00003940
mmc0: req done (CMD18): 0/0/0: 00000900 5f5a83d5 2db7ffbf 96800012
mmc0: starting CMD18 arg 0000ae00 flags 00000035
PXAMCI: irq 00000004 stat 00002140
PXAMCI: irq 00000005 stat 00002940
PXAMCI: irq 00000007 stat 00003940
mmc0: req done (CMD18): 0/0/0: 00000900 5f5a83d5 2db7ffbf 96800012
mmc0: starting CMD18 arg 0ab49e00 flags 00000035
PXAMCI: irq 00000004 stat 00002140
PXAMCI: irq 00000005 stat 00002940
PXAMCI: irq 00000007 stat 00003940
mmc0: req done (CMD18): 0/0/0: 00000900 5f5a83d5 2db7ffbf 96800012
mmc0: starting CMD18 arg 0ab4ae00 flags 00000035
PXAMCI: irq 00000004 stat 00002140
PXAMCI: irq 00000005 stat 00002940
PXAMCI: irq 00000007 stat 00003940
mmc0: req done (CMD18): 0/0/0: 00000900 5f5a83d5 2db7ffbf 96800012
with desabled mmc debug :
Linux version 2.6.20-rc1-mm1-z2 (root@fly) (gcc version 4.1.1 (Gentoo 4.1.1-r3))
#58 PREEMPT Thu Feb 15 13:49:39 MSK 2007
CPU: XScale-PXA270 [69054117] revision 7 (ARMv5TE), cr=0000397f
Machine: SHARP Akita
[..skipped..]
mmcblk0: mmc0:b368 SDC 2009600KiB
mmcblk0: p1
mmcblk0: error 2 transferring data
mmcblk0: error 2 transferring data
kjournald starting. Commit interval 5 seconds
mmcblk0: error 2 transferring data
EXT3 FS on mmcblk0p1, internal journal
EXT3-fs: recovery complete.
mmcblk0: error 2 transferring data
EXT3-fs: mounted filesystem with ordered data mode.
VFS: Mounted root (ext3 filesystem).
Freeing init memory: 72K
mmcblk0: error 2 transferring data
mmcblk0: error 2 transferring data
mmcblk0: error 2 transferring data
mmcblk0: error 2 transferring data
mmcblk0: error 2 transferring data
mmcblk0: error 2 transferring data
mmcblk0: error 2 transferring data
i boot into root fs on SD, and it just hangs on remounting to rw, so
it's not easy to get full dmesg output with i/o error and mmc debug
info, but i'll try if it helps
next prev parent reply other threads:[~2007-02-15 12:17 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-02-14 1:46 2.6.20 mmc: problem with highspeed SD card Eugene Ilkov
2007-02-15 5:48 ` Pierre Ossman
2007-02-15 12:17 ` Eugene Ilkov [this message]
2007-02-15 16:39 ` Pierre Ossman
2007-02-15 16:52 ` Pierre Ossman
2007-02-15 17:08 ` Pierre Ossman
2007-02-15 22:44 ` Eugene Ilkov
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