[U-Boot] [PATCH 1/3] mmc: sdhci: increase the timeout value for data transfer
Jaehoon Chung
jh80.chung at samsung.com
Mon Sep 24 03:32:55 CEST 2012
Hi Rommel,
I didn't think so..Our environment is support the CONFIG_SYS_MMC_MAX_BLK_COUNT.
Did you know how get the timeout value "1000"?
If the timeout value "1000" is reasonable, i want to know what basis.
Well, i don't think that my timeout value is reasonable.
Actually i want to remove the timeout value in that function.
But then we should be prevent the infinite loop.
Anyway, thanks for your comment. I will check the your opinion.
Best Regards,
Jaehoon Chung
On 09/21/2012 06:48 PM, Rommel Custodio wrote:
>
> Jaehoon Chung <jh80.chung <at> samsung.com> writes:
>
>>
>> Timeout value is tunable.
>> When run read/write operation, sometime returned the timeout error.
>> Because the timeout value is too short.
>
> Hello,
>
> I think it is better to fine tune CONFIG_SYS_MMC_MAX_BLK_COUNT.
> This gets assigned to mmc->b_max, unless you specifically set
> mmc->b_max value during mmc_register().
>
> b_max is important since when you adjust b_max properly,
> mmc_bread() and mmc_bwrite() will properly partition the
> read/write operation (in b_max blocks) so that the timeout
> does not occur.
>
> All the best,
> Rommel
>
> (replying via gmane since i just joined the list)
>
>
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