Re: h1940 - kernel 2.6.20-rc1 can't read my SD card

Hi guys,

Could you please test the new kernel with a new SD/MMC driver?
We hope it solves the issues we've been having with the old driver.
Can you please download, test, and report any issues? Thanks in advance!
http://anymore.nl/ipaq/files/kernels/2.6.20-rc1-eabi-mmctest/

Regards,
Arjan

Tom Talpey schreef:
> At 11:59 AM 1/23/2007, Carlo Palma wrote:
>
>> I the next days I'll continue to study the s3c2410mci.c .. and I'll search
>> to understand what's changed from 2.6.17 to 2.6.20 about the mmc support
>> and to try to solve this problem.
>> Maybe forcing the block size to 512... could be a king of solution.
>>
>
> I am having the same problem, but I have managed to fix at least one of
> my cards by adding a clock limit to the h1940_mmc_cfg structure in
> mach-h1940.c. I have another card which it does not fix though (133x).
> These cards all worked fine in the previous kernels.
>
> There were a LOT of changes in the core MMC layer (drivers/mmc) in 2.6.20
> which enable the setting of higher clocks and full device widths. I routinely
> see speeds of 25MHz up to 130MHZ offered on the MMC slot, all of which
> break badly. The limit I have observed for my h1940 to work is 3MHz (three).
>
> I even had one 128MB SD card become a 64MB card after booting one
> bad kernel, so be careful! I am afraid it had a bit of a lobotomy - I can't
> get it back to 128. Ideas welcome on that...
>
> Patch for the high clocks below - beware whitespace. I have had other
> issues with my own kernel builds in 2.6.20-rc[1-5], but they're largely
> stable now. I will send my other stuff in another message.
>
> Tom.
>
Received on Wed Jan 24 2007 - 06:13:29 EST