From mboxrd@z Thu Jan  1 00:00:00 1970
From: plagnioj@jcrosoft.com (Jean-Christophe PLAGNIOL-VILLARD)
Date: Wed, 22 Sep 2010 18:10:08 +0200
Subject: [PATCH] at91sam9g45: fix i2c bus speed
In-Reply-To: <87hbhhbyce.fsf@macbook.be.48ers.dk>
References: <1285147886-17100-1-git-send-email-jacmet@sunsite.dk>
	<20100922104846.GQ32018@game.jcrosoft.org>
	<87lj6uavde.fsf@macbook.be.48ers.dk>
	<20100922143406.GT32018@game.jcrosoft.org>
	<87hbhhbyce.fsf@macbook.be.48ers.dk>
Message-ID: <20100922161008.GV32018@game.jcrosoft.org>
To: linux-arm-kernel@lists.infradead.org
List-Id: linux-arm-kernel.lists.infradead.org

On 17:18 Wed 22 Sep     , Peter Korsgaard wrote:
> >>>>> "Jean-Christophe" == Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> writes:
> 
> Hi,
> 
>  >> You don't expect most 9g45 users will run at 400MHz? It seems pretty
>  >> likely to me. In any case, a safe (but somewhat slow) default seems
>  >> better than a potentially unsafe one.
>  >> 
>  >> Now, I agree that it would be nice to add an interface to tweak this
>  >> delay if needed (extra argument to at91_add_device_i2c()?), but that's
>  >> next to the discussion about what the default should be.
> 
>  Jean-Christophe> I'd prefer to calculate it
> 
>  Jean-Christophe> so we specify which max freq we want in my mind it
>  Jean-Christophe> will be good to be as in spi to specific per device
>  Jean-Christophe> it's max speed so we can adapt the bus freq
> 
> Yes, that sounds like a nice long term idea, but let's fix the immediate
> problem in the mean time, right?
so it's will be beeter to add a parameter to fix the speed in the boards

Best Regards,
J.