[PATCH] at91sam9g45: fix i2c bus speed
Jean-Christophe PLAGNIOL-VILLARD
plagnioj at jcrosoft.com
Wed Sep 22 12:10:08 EDT 2010
On 17:18 Wed 22 Sep , Peter Korsgaard wrote:
> >>>>> "Jean-Christophe" == Jean-Christophe PLAGNIOL-VILLARD <plagnioj at 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.
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