Re: [U-Boot] [PATCH 1/3] mmc: sdhci: increase the timeout value for data transfer

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)