On 15/09/2010, at 6:59 PM, Haavard Skinnemoen wrote:
> Since the identification frequency was increased to 400 kHz, my
> ATSTK1000 board has not been able to initialize any MMC or SD cards.
> Reducing the identification mode frequency to 200 kHz fixes the problem.
>
> This is definitely a board-specific issue, probably due to weak pull-up
> resistor values, but this is the simplest fix I could come up with.
I wonder whether there's an Atmel reference schematic around with an incorrect
resistor value on it, the only three people I know affected by this are myself,
Hein Tibosch and you, all on AVR32. We've now submitted one fix each, mine was
similar to yours [1] but there's been movement on Hein's more comprehensive
patch recently [2]. I don't know who's supposed to be merging MMC patches atm,
Chris Ball added on CC on a hunch.
--Ben.
[1] http://lkml.org/lkml/2010/1/1/85
[2] http://lkml.org/lkml/2010/9/2/494--
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