From: Adrian Hunter <adrian.hunter@nokia.com>
To: twebb <taliaferro62@gmail.com>
Cc: "linux-omap@vger.kernel.org Mailing List" <linux-omap@vger.kernel.org>
Subject: Re: MMC2 support in linux-omap-2.6.27 (omap1)
Date: Thu, 26 Mar 2009 10:46:52 +0200 [thread overview]
Message-ID: <49CB40FC.5070907@nokia.com> (raw)
In-Reply-To: <dbdb2ea60903251449u5d8e3edfvd58291923ecf6693@mail.gmail.com>
twebb wrote:
> On Wed, Mar 25, 2009 at 10:13 AM, twebb <taliaferro62@gmail.com> wrote:
>> I'm currently using linux-omap-2.6.27 (tag=omap1) and trying to add
>> MMC2 support. I've back ported what I think I need from various files
>> inn l-o-2.6.28-omap1. I will eventually move to 2.6.28-omap1 but for
>> now am trying to get it working on 2.6.27.
>>
>> Traces show that all looks good up until first command is issued, then
>> nothing seems to happen. STAT reg shows 0, don't see clock or cmd
>> activity. MMC1 is working fine with an SD card; MMC2 is connected to
>> eMMC flash. Seems like I'm missing something basic like a clock or
>> enable, though I've confirmed ICLK and FCLK are enabled. Any ideas?
>>
>> Thanks,
>> twebb
>>
>
> I found at least part of my problem. SDVS field of HCTL was being set
> to 0x7 (3.3V) instead of 0x5 (1.8V), and apparently MMC2 must be set
> for 0x5.
> --
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>
The most up to date omap_hsmmc.c is here:
http://git.kernel.org/?p=linux/kernel/git/drzeus/mmc.git;a=blob;f=drivers/mmc/host/omap_hsmmc.c;h=488f222054f8a1493142d02da526c951def5ddfe;hb=next
That includes the 10 patches on LKML except number 8
next prev parent reply other threads:[~2009-03-26 8:46 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-03-25 14:13 MMC2 support in linux-omap-2.6.27 (omap1) twebb
2009-03-25 21:49 ` twebb
2009-03-26 8:46 ` Adrian Hunter [this message]
[not found] ` <e1a3109c0903260313k54fb0a85kad478258c22958e6@mail.gmail.com>
2009-03-27 14:09 ` twebb
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