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Re: 1024bytes/sect microSD support

Hi! Paul,

From: Paul Fleischer <>
Date: Fri, 27 Nov 2009 10:50:49 +0100

> As far as I can read from the SD Simplified Physical Layer
> Specification[1] page 19, the 2Gb cards are bit of an exception as
> their CSD announces a block size of 1024, but the actual block size to
> use is 512kb.
> I have patched dev/sdmmc/sdmmc_mem.c to follow this exception. I bet
> the patch can be made more pretty, but it seems to work.

Your patch works to my microSD on GUMSTIX.
A lot of people will think this patch to be necessary.


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