Subject: Re: mmc_spi with GPIO_MODE_3

From: Anton Vorontsov <[email-masked]>
Date: Fri, 31 Oct 2008 16:45:43 +0300

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/[email-masked]/msg00160.html

But in reality MODE_0 works better.

http://www.mail-archive.com/[email-masked]/msg00155.html
http://www.mail-archive.com/[email-masked]/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/[email-masked]/msg00153.html

-- 
Anton Vorontsov
email: [email-masked]
irc://irc.freenode.net/bd2