Re: [PATCH] mmc: Reduce fOD to 200 kHz if possible

[Ben Nizette]

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--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/