[PATCH] at91sam9g45: fix i2c bus speed

[Wolfgang Wegner]

Hi,

On Wed, Sep 22, 2010 at 04:34:06PM +0200, Jean-Christophe PLAGNIOL-VILLARD wrote:
> On 13:08 Wed 22 Sep     , Peter Korsgaard wrote:
[...]
> > 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.
> I'd prefer to calculate it
> 
> so we specify which max freq we want in my mind it will be good to be as in
> spi to specific per device it's max speed so we can adapt the bus freq

sorry in case I got you wrong, but please keep in mind that in
contrast to SPI the addressing in I2C is done via the serial data,
so the bus speed has to be _permanently_ adapted to match the
slowest device present.

Regards,
Wolfgang