linux-kernel - Re: atmel_spi clock polarity

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Date:	Wed, 20 Feb 2008 17:32:38 -0800
From:	David Brownell <david-b@...bell.net>
To:	Haavard Skinnemoen <hskinnemoen@...el.com>
Cc:	Atsushi Nemoto <anemo@....ocn.ne.jp>,
	spi-devel-general@...ts.sourceforge.net,
	linux-kernel@...r.kernel.org
Subject: Re: atmel_spi clock polarity

On Wednesday 20 February 2008, Haavard Skinnemoen wrote:
> > 
> > Unfortunately it did not work.  The clock state did not change by
> > writing MR register.
> 
> Ok, thanks for testing.
> 
> In that case, I think the best fix is to let NPCS0 stay selected
> permanently in MR and overwrite CSR0 with to the new slave's settings
> before asserting CS. But that's a more complicated change, and I don't
> know how it will affect the AT91RM9200 special cases.

The rm9200 special cases which, ISTR, still don't work right ...


> So I suggest we merge your patch for 2.6.25, and try to optimize it
> for 2.6.26.
> 
> David, do you want me to pass on the patch with my signoff or just ask
> Andrew to add my Acked-by to the patch already in mm?

It'd be good to let Andrew have your ack.  It's already in MM, so
if I don't need to sign off it's nice to have less to do there.  :)

- Dave

 


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