From: Anton Vorontsov <avorontsov@ru.mvista.com>
To: "Stepanov, Sergej" <Sergej.Stepanov@ids.de>
Cc: "linuxppc-dev@ozlabs.org" <linuxppc-dev@ozlabs.org>
Subject: Re: mmc_spi with GPIO_MODE_3
Date: Fri, 31 Oct 2008 16:45:43 +0300 [thread overview]
Message-ID: <20081031134542.GA4875@oksana.dev.rtsoft.ru> (raw)
In-Reply-To: <4206182445660643B9AEB8D4E55BBD0A17724C7E@HERMES2>
On Fri, Oct 31, 2008 at 01:49:31PM +0100, Stepanov, Sergej wrote:
> Hello Anton,
>
> could you say me please, would the mmc_spi-driver function with GPIO_MODE_3?
You mean SPI_MODE_3? Well, it should work, or even better it shouldn't
matter if it is 3 or 0. See Pierre's answer:
http://www.mail-archive.com/spi-devel-general@lists.sourceforge.net/msg00160.html
But in reality MODE_0 works better.
http://www.mail-archive.com/spi-devel-general@lists.sourceforge.net/msg00155.html
http://www.mail-archive.com/spi-devel-general@lists.sourceforge.net/msg00231.html
IIRC nobody knows why exactly this happens, or better, nobody bothered
to investigate, since MODE_0 works OK. ;-)
> I have seen in mmc_spi_probe() this spi->mode = SPI_MODE_0.
> What should come back if i have CI and CP other then in SPI_MODE_0?
Something like this I suppose:
http://www.mail-archive.com/spi-devel-general@lists.sourceforge.net/msg00153.html
--
Anton Vorontsov
email: cbouatmailru@gmail.com
irc://irc.freenode.net/bd2
next prev parent reply other threads:[~2008-10-31 13:45 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-10-31 12:49 mmc_spi with GPIO_MODE_3 Stepanov, Sergej
2008-10-31 13:45 ` Anton Vorontsov [this message]
2008-10-31 15:16 ` AW: " Stepanov, Sergej
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