From: Ned Forrester <nforrester-/d+BM93fTQY@public.gmane.org>
To: "BRADWAY, Kevin" <kbradway-t/Sy+Gd0MBBBDgjK7y7TUQ@public.gmane.org>
Cc: spi-devel-general-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org
Subject: Re: mmc over spi
Date: Mon, 14 Jul 2008 17:57:03 -0400 [thread overview]
Message-ID: <487BCBAF.1050401@whoi.edu> (raw)
In-Reply-To: <E92FEE65D4904D408A9BBE380F7E5E01014FA801-AIXvuindoPmK+Y0BBN2wtLxIJ9H7+gyA@public.gmane.org>
BRADWAY, Kevin wrote:
> I am trying to use the mmc over spi in the 2.6.24 distro on a pxa25XX.
>
> I have read and read the blackfin and the git pages for the 2.6.24 add ins for this topic but I still can not seem to get it going.
>
> I am using
> gpio6 for the clock
> gpio12 for the CD
> gpio8 for the CS
Those pins on a PXA2xx don't have anything to do with SPI. I see that 6
and 8 have an MMC function, but I would guess that that is for some
native MMC capability, and not for MMC over SPI.
> questions:
> Do I need the pxa2XX_spi driver to make this work?
The only pins that the pxa2xx_spi driver will operate with, are the SSP
ports. These are GPIO 23-27 (SSP) and GPIO 81-84 (NSSP).
See Section 4.1.2 of the PXA255 developers manual for the various GPIO
pin functions.
--
Ned Forrester nforrester-/d+BM93fTQY@public.gmane.org
Oceanographic Systems Lab 508-289-2226
Applied Ocean Physics and Engineering Dept.
Woods Hole Oceanographic Institution Woods Hole, MA 02543, USA
http://www.whoi.edu/sbl/liteSite.do?litesiteid=7212
http://www.whoi.edu/hpb/Site.do?id=1532
http://www.whoi.edu/page.do?pid=10079
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prev parent reply other threads:[~2008-07-14 21:57 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-07-14 21:20 mmc over spi BRADWAY, Kevin
[not found] ` <E92FEE65D4904D408A9BBE380F7E5E01014FA801-AIXvuindoPmK+Y0BBN2wtLxIJ9H7+gyA@public.gmane.org>
2008-07-14 21:57 ` Ned Forrester [this message]
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