Zipit/uboot mmc driver issue

Zipit/uboot mmc driver issue

[Marek Vasut]

On Thursday 18 November 2010 10:26:49 Phip wrote:
> Greetings,
> 
> I am having difficulties with the Zipit mmc driver and my SDHC card. I
> realize this may be an imposition; I write to you because I am trying to
> determine if the problem is with the mmc driver or elsewhere. I was not
> having any problems with SD card I/O under blob; this began when I flashed
> to u-boot.

Blob doesn't support SD/MMC at all. You mean linux kernel ?
> 
> dmesg comes to mounting root:
> 
> pxa-rtc pxa-rtc: setting system clock to 2000-01-01 00:00:18 UTC
> Waiting 2sec before mounting root device...
> mmc0: host does not support reading read-only switch. assuming
> write-enable. mmc0: new SDHC card at address 1234
> PM: Adding info for mmc:mmc0:1234
> mmcblk0: mmc0:1234 SA04G 2.68 GiB

The card is mis-detected ?
> 
> Then a few cycles of write errors like these:
> 
> mmcblk0: error -84 transferring data, sector 243, r 8, card status 0xe00
> end_request: I/O error, dev mmcblk0, sector 243
> Buffer I/O error on device mmcblk0p1, logical block 0
> lost page write due to I/O error on mmcblk0p1
> 
> And finally EXT3-fs detects a problem with the journal and remounts the
> filesystem read-only.
> 
> I do not mean to ask you to troubleshoot me, but it seems like you would be
> the best person to ask about this particular combination of hardware and
> software. Or perhaps there is a better place for me to ask?

CCing linux-arm-kernel
> 
> Thank you very much for your time
> Phip
> 
> - Zipit running u-boot 8/23/2010; 2.6.35 8/22/2010; both from mozzwald
> - SD card is a Kensington 4GB microSD in a miniSD adapter; works flawlessly
> on my desktop box.

Maybe the adapter is faulty, try another one. It happened a lot before.

Zipit/uboot mmc driver issue

[Phip]

2010/11/18 Marek Vasut <marek.vasut@gmail.com>

> On Thursday 18 November 2010 10:26:49 Phip wrote:
> > Greetings,
> >
> > I am having difficulties with the Zipit mmc driver and my SDHC card. I
> > realize this may be an imposition; I write to you because I am trying to
> > determine if the problem is with the mmc driver or elsewhere. I was not
> > having any problems with SD card I/O under blob; this began when I
> flashed
> > to u-boot.
>
> Blob doesn't support SD/MMC at all. You mean linux kernel ?
>
Yes; My mistake.

> >
> > dmesg comes to mounting root:
> >
> > pxa-rtc pxa-rtc: setting system clock to 2000-01-01 00:00:18 UTC
> > Waiting 2sec before mounting root device...
> > mmc0: host does not support reading read-only switch. assuming
> > write-enable. mmc0: new SDHC card at address 1234
> > PM: Adding info for mmc:mmc0:1234
> > mmcblk0: mmc0:1234 SA04G 2.68 GiB
>
> The card is mis-detected ?
>
This was a  typo -- it consistently reads 3.68 GiB.

> >
> > Then a few cycles of write errors like these:
> >
> > mmcblk0: error -84 transferring data, sector 243, r 8, card status 0xe00
> > end_request: I/O error, dev mmcblk0, sector 243
> > Buffer I/O error on device mmcblk0p1, logical block 0
> > lost page write due to I/O error on mmcblk0p1
> >
> > And finally EXT3-fs detects a problem with the journal and remounts the
> > filesystem read-only.
> >
> > I do not mean to ask you to troubleshoot me, but it seems like you would
> be
> > the best person to ask about this particular combination of hardware and
> > software. Or perhaps there is a better place for me to ask?
>
> CCing linux-arm-kernel
> >
> > Thank you very much for your time
> > Phip
> >
> > - Zipit running u-boot 8/23/2010; 2.6.35 8/22/2010; both from mozzwald
> > - SD card is a Kensington 4GB microSD in a miniSD adapter; works
> flawlessly
> > on my desktop box.
>
> Maybe the adapter is faulty, try another one. It happened a lot before.
>

I'll look for another adapter to verify if there are no other leads to try.

Regards
Phip

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Zipit/uboot mmc driver issue

[Marek Vasut]

On Thursday 18 November 2010 11:45:16 Phip wrote:
> 2010/11/18 Marek Vasut <marek.vasut@gmail.com>
> 
> > On Thursday 18 November 2010 10:26:49 Phip wrote:
> > > Greetings,
> > > 
> > > I am having difficulties with the Zipit mmc driver and my SDHC card. I
> > > realize this may be an imposition; I write to you because I am trying
> > > to determine if the problem is with the mmc driver or elsewhere. I was
> > > not having any problems with SD card I/O under blob; this began when I
> > 
> > flashed
> > 
> > > to u-boot.
> > 
> > Blob doesn't support SD/MMC at all. You mean linux kernel ?
> 
> Yes; My mistake.
> 
> > > dmesg comes to mounting root:
> > > 
> > > pxa-rtc pxa-rtc: setting system clock to 2000-01-01 00:00:18 UTC
> > > Waiting 2sec before mounting root device...
> > > mmc0: host does not support reading read-only switch. assuming
> > > write-enable. mmc0: new SDHC card at address 1234
> > > PM: Adding info for mmc:mmc0:1234
> > > mmcblk0: mmc0:1234 SA04G 2.68 GiB
> > 
> > The card is mis-detected ?
> 
> This was a  typo -- it consistently reads 3.68 GiB.
> 
> > > Then a few cycles of write errors like these:
> > > 
> > > mmcblk0: error -84 transferring data, sector 243, r 8, card status
> > > 0xe00 end_request: I/O error, dev mmcblk0, sector 243
> > > Buffer I/O error on device mmcblk0p1, logical block 0
> > > lost page write due to I/O error on mmcblk0p1
> > > 
> > > And finally EXT3-fs detects a problem with the journal and remounts the
> > > filesystem read-only.
> > > 
> > > I do not mean to ask you to troubleshoot me, but it seems like you
> > > would
> > 
> > be
> > 
> > > the best person to ask about this particular combination of hardware
> > > and software. Or perhaps there is a better place for me to ask?
> > 
> > CCing linux-arm-kernel
> > 
> > > Thank you very much for your time
> > > Phip
> > > 
> > > - Zipit running u-boot 8/23/2010; 2.6.35 8/22/2010; both from mozzwald
> > > - SD card is a Kensington 4GB microSD in a miniSD adapter; works
> > 
> > flawlessly
> > 
> > > on my desktop box.
> > 
> > Maybe the adapter is faulty, try another one. It happened a lot before.
> 
> I'll look for another adapter to verify if there are no other leads to try.

This is very likely the issue, really ... this is where I'd start debuging if I 
were you.
> 
> Regards
> Phip
> 
> "Auto F5 reload window" options Default timeout* Timeout for this page* Add
> random value to timeout between 0 and* Show and hide menu Ignore everything
> after these symbols in URL(separate with spaces)  Include the separators in
> the URL saved Hide menu when clicking outside the menu Prolong timeout on
> mouseclicks or keyboard input Reload all pages with default timeout, which
> has no timeout set
> *Format examples: hh:mm:ss, h:m:ss, m:sss, s etc. like 1:20:30 oder 500
> oder 3:100

What's this crud ? Can you please avoid sending irelevant stuff ?

Zipit/uboot mmc driver issue

[Phip]

2010/11/18 Marek Vasut <marek.vasut@gmail.com>

> On Thursday 18 November 2010 11:45:16 Phip wrote:
> > 2010/11/18 Marek Vasut <marek.vasut@gmail.com>
> >
> > > On Thursday 18 November 2010 10:26:49 Phip wrote:
> > > > Greetings,
> > > >
> > > > I am having difficulties with the Zipit mmc driver and my SDHC card.
> I
> > > > realize this may be an imposition; I write to you because I am trying
> > > > to determine if the problem is with the mmc driver or elsewhere. I
> was
> > > > not having any problems with SD card I/O under blob; this began when
> I
> > >
> > > flashed
> > >
> > > > to u-boot.
> > >
> > > Blob doesn't support SD/MMC at all. You mean linux kernel ?
> >
> > Yes; My mistake.
> >
> > > > dmesg comes to mounting root:
> > > >
> > > > pxa-rtc pxa-rtc: setting system clock to 2000-01-01 00:00:18 UTC
> > > > Waiting 2sec before mounting root device...
> > > > mmc0: host does not support reading read-only switch. assuming
> > > > write-enable. mmc0: new SDHC card at address 1234
> > > > PM: Adding info for mmc:mmc0:1234
> > > > mmcblk0: mmc0:1234 SA04G 2.68 GiB
> > >
> > > The card is mis-detected ?
> >
> > This was a  typo -- it consistently reads 3.68 GiB.
> >
> > > > Then a few cycles of write errors like these:
> > > >
> > > > mmcblk0: error -84 transferring data, sector 243, r 8, card status
> > > > 0xe00 end_request: I/O error, dev mmcblk0, sector 243
> > > > Buffer I/O error on device mmcblk0p1, logical block 0
> > > > lost page write due to I/O error on mmcblk0p1
> > > >
> > > > And finally EXT3-fs detects a problem with the journal and remounts
> the
> > > > filesystem read-only.
> > > >
> > > > I do not mean to ask you to troubleshoot me, but it seems like you
> > > > would
> > >
> > > be
> > >
> > > > the best person to ask about this particular combination of hardware
> > > > and software. Or perhaps there is a better place for me to ask?
> > >
> > > CCing linux-arm-kernel
> > >
> > > > Thank you very much for your time
> > > > Phip
> > > >
> > > > - Zipit running u-boot 8/23/2010; 2.6.35 8/22/2010; both from
> mozzwald
> > > > - SD card is a Kensington 4GB microSD in a miniSD adapter; works
> > >
> > > flawlessly
> > >
> > > > on my desktop box.
> > >
> > > Maybe the adapter is faulty, try another one. It happened a lot before.
> >
> > I'll look for another adapter to verify if there are no other leads to
> try.
>
> This is very likely the issue, really ... this is where I'd start debuging
> if I
> were you.
>
> I will. I have second thoughts though because when the zipit was flashed
with the 2.6.29 kernel, I was able to write to the SD card and everything
worked as expected. When I flashed to u-boot is when this problem began, and
that makes me suspect u-boot over the card adapter.
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Zipit/uboot mmc driver issue

[Marek Vasut]

On Thursday 18 November 2010 10:26:49 Phip wrote:
> Greetings,
> 
> I am having difficulties with the Zipit mmc driver and my SDHC card. I
> realize this may be an imposition; I write to you because I am trying to
> determine if the problem is with the mmc driver or elsewhere. I was not
> having any problems with SD card I/O under blob; this began when I flashed
> to u-boot.

Blob doesn't support SD/MMC at all. You mean linux kernel ?
> 
> dmesg comes to mounting root:
> 
> pxa-rtc pxa-rtc: setting system clock to 2000-01-01 00:00:18 UTC
> Waiting 2sec before mounting root device...
> mmc0: host does not support reading read-only switch. assuming
> write-enable. mmc0: new SDHC card at address 1234
> PM: Adding info for mmc:mmc0:1234
> mmcblk0: mmc0:1234 SA04G 2.68 GiB

The card is mis-detected ?
> 
> Then a few cycles of write errors like these:
> 
> mmcblk0: error -84 transferring data, sector 243, r 8, card status 0xe00
> end_request: I/O error, dev mmcblk0, sector 243
> Buffer I/O error on device mmcblk0p1, logical block 0
> lost page write due to I/O error on mmcblk0p1
> 
> And finally EXT3-fs detects a problem with the journal and remounts the
> filesystem read-only.
> 
> I do not mean to ask you to troubleshoot me, but it seems like you would be
> the best person to ask about this particular combination of hardware and
> software. Or perhaps there is a better place for me to ask?

CCing linux-arm-kernel
> 
> Thank you very much for your time
> Phip
> 
> - Zipit running u-boot 8/23/2010; 2.6.35 8/22/2010; both from mozzwald
> - SD card is a Kensington 4GB microSD in a miniSD adapter; works flawlessly
> on my desktop box.

Maybe the adapter is faulty, try another one. It happened a lot before.