Hi, On Mon, Nov 07 2011, Qiang Liu wrote: > Low performance of SDHC (half of before) due to its frequency was set to > 25MHz, > but not 50MHz (involved by commit id 013909c4ffd16ded4895528b856fd8782df04dc6, > add support for query function modes for uhs cards according to Physical Layer > SPEC V3.01). > > Set high speed max frequency according to response status of CMD6, but > not for SPEC Version. Response of switch command is first consideration > factor when set SDHC max working frequency. TRAN_SPEED in CSD register > will be seemed as the second factor. > > Signed-off-by: Qiang Liu <qiang....@freescale.com>
Have you seen: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux.git;a=commitdiff;h=f2815f68dabbb373fd1c9f0fd4a609d486697c2b ("mmc: sd: Handle SD3.0 cards not supporting UHS-I bus speed mode") which is already in mainline? I think your patch is identical. Thanks, - Chris. -- Chris Ball <c...@laptop.org> <http://printf.net/> One Laptop Per Child -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
