Problem with Multiblock Write in PXA270 MMC Driver

[Eric Miao]

On Tue, Oct 26, 2010 at 10:32 PM, Larry Martin <Larry at gluelogix.com> wrote:
>
> This is a followup to:
> How do you access MMC driver set_ios?
> http://lists.arm.linux.org.uk/lurker/message/20101007.144606.f7a7fbcd.en.html
>
> The real problem turned out to be that some SD cards fail multiblock write
> with the PXA270 MMC driver.  In our sample, the failing cards were all
> Sandisk 2GB marked "MADE IN CHINA".  Sandisk verified that they were genuine
> (i.e. not counterfeit).  Host platform was Gumstix Verdex Pro. Individual
> units vary in their failures, so it is likely a signal issue on the boards;
> it could also likely be an opportunity to make the PXA drivers more robust.
>
> Full details are at:
> http://old.nabble.com/Root-Cause%3A-Intermittent-SD-Card-Failures-on-Verdex-Pro-to29985059.html
>

I didn't get the point, so turning multiblock into singleblock solved the issue
of writing on those SD cards or there is still no verified solution?

> Good luck, MMC Driver Maintainers.
>
> --
> Larry Martin
> www.GlueLogix.com
>
>
>
>
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