Messages in this thread |  | | | Date | Wed, 7 Jun 2006 17:58:37 +0100 | | From | Russell King <> | | Subject | Re: 2GB MMC/SD cards |
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On Wed, Jun 07, 2006 at 11:08:36AM +0200, Pierre Ossman wrote: > New information. Version 4.2 of the MMC spec changes the wording to this: > > * WRITE_BL_LEN > Block length for write operations. See READ_BL_LEN for field coding. > Note that the support for 512B write access is mandatory for all cards. > > Similar wording for READ_BL_LEN, but that isn't of interest to us.
I wonder if all 2GB cards are >= v4.2 of the spec? If so, we could do what would appear correct to both the spec and reality, and select 512 byte blocksizes irrespective if they conform to v4.2 or later.
-- Russell King Linux kernel 2.6 ARM Linux - http://www.arm.linux.org.uk/ maintainer of: 2.6 Serial core - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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