Re: MMC broken on beagleboard with current git

Koen Kooi <k.kooi@xxxxxxxxxxxxxxxxxx> · Thu, 25 Sep 2008 12:24:55 +0200

Op 25 sep 2008, om 11:47 heeft Tony Lindgren het volgende geschreven:

* Koen Kooi <k.kooi@xxxxxxxxxxxxxxxxxx> [080925 12:23]:

Op 25 sep 2008, om 10:51 heeft Tony Lindgren het volgende geschreven:

* Koen Kooi <k.kooi@xxxxxxxxxxxxxxxxxx> [080925 11:42]:
Hi,

I just built a kernel from current git[1] and the mmc controller
doesn't
get detected on boot on my beagleboards. The omap mmc system has
seen a
lot of changes lately, does anyone have a hint where to start  
looking
before attemping a bisect?

Sounds like the recent mmc init changes we've done:

535e1808d1c77a580815f7d7daacc6c030e29cb1 -  12 september 2008

8e6e06c71b9d21d85a3ae652868e2802c054a08a - 12 september 2008

c434c15d28c82d92e55897bd265c423e9ab69362 - 24 september 2008

I've verified that it works on omap3430sdp. But mach-omap2/hsmmc.c
needs
some more work done to support other mmc controllers besides the  
first
one.
I don't think other controllers ever worked before these patches
either though..

Let me know if you can narrow it down to some commit and I may be  
able
to help further from there.

The previous working version I built was based of
de1121fdb899f762b9e717f44eaf3fae7c00cd3e which was commited at 13
september 2008, so 535e18.. and 8e6e06c.. don't break it.

OK, good to know. Can you try to git-bisect it?

That proved to be a lot less work than expected :)

Last good: 9d1dff8638c9e96a401e1885f9948662e9ff9636
First bad: c434c15d28c82d92e55897bd265c423e9ab69362

So http://source.mvista.com/git/gitweb.cgi?p=linux-omap-2.6.git;a=commit;h=c434c15d28c82d92e55897bd265c423e9ab69362 
 breaks MMC on beagle.

regards,

Koen

Tony

[1] http://source.mvista.com/git/gitweb.cgi?p=linux-omap-2.6.git;a=commit;h=c434c15d28c82d92e55897bd265c423e9ab69362

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