Hello
The problem was due to the missing both 8BIT and MMC_SPEED supports in
my sdhci driver (comes from the 2.6.32 Kernel series).
I've also added the patch in attachment.

Best Regards
Peppe

On 8/24/2010 5:11 PM, Peppe CAVALLARO wrote:
>
> Hello,
> testing the sdhci-stm.c driver, I sent some weeks ago to the mailing list,
> I'm facing some performance issues.
> For example, when copy a file (e.g. ~10MiB) to the card, I've noticed
> that,
> in the sdhci_prepare_data, the maximum value for data->blocks is 248.
>
> The sdhci-stm driver uses the ADMA and:
>   max_seg_size = 65536,
>   max_hw_segs = 128,
>   max_phys_segs = 128,
>   max_req_size = 524288,
>   max_blk_size = 2048,
>   max_blk_count = 65535.
>
> Using my arasan.c code, I've also sent to this mailing list in July,
> I could see that the data->blocks was bigger than 248 and the
> performances were better.
> Note that this driver used the same mmc_host parameters (max_blk_size
> etc.) reported
> above for the sdhci-stm.
>
> What am I missing?
>
> Welcome advice.
>
> Best Regards,
> Giuseppe
> --
> To unsubscribe from this list: send the line "unsubscribe linux-mmc" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
>