Re: Fwd: MMC3 Overo

[Kevin Hilman <khilman@deeprootsystems.com>]

John Sarman <johnsarman@gmail.com> writes:

> ---------- Forwarded message ----------
> From: John Sarman <johnsarman@gmail.com>
> Date: Wed, Aug 5, 2009 at 12:01 PM
> Subject: Re: MMC3 Overo
> To: Grazvydas Ignotas <notasas@gmail.com>
>
>
> On Wed, Aug 5, 2009 at 4:32 AM, Grazvydas Ignotas<notasas@gmail.com> wrote:
>>> <u-boot_snip>
>>>  MUX_VAL(CP(ETK_CLK_ES2),       (IDIS | PTU | EN  | M2)) /*MMC3_CLK*/\
>>
>> You must have input enable on CLK line for MMC3 or it won't work for
>> some reason (MMC 1 and 2 doesn't need that). Without this part of the
>> host controller hardware doesn't get the clock I guess, or something
>> like that. You won't believe how much time we've wasted on this!
>>
> MUX_VAL(CP(ETK_CLK_ES2),       (IEN | PTU | EN  | M2)) /*MMC3_CLK*/\
>
> Works Beautifully, Thank you so much.  I have also burnt too much
> midnight oil on this problem.
> So looks like Overo MMC3 works like a champ!

Might I suggest a kernel patch for this rather than fixing u-boot so that
all the midnight oil you've burnt does not have to be duplicated by others.

Thanks,

Kevin
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