[i2c] [PATCH] powerpc: i2c-mpc: make speed registers configurable via FDT

Trent Piepho xyzzy at speakeasy.org
Fri Aug 1 21:47:13 CEST 2008


On Fri, 1 Aug 2008, Timur Tabi wrote:
> On Thu, Jul 31, 2008 at 6:32 PM, Trent Piepho <xyzzy at speakeasy.org> wrote:
>
> > The real problem, which kept me from making a patch to do this months ago,
> > is that the source clock that the I2C freq divider applies to is different
> > for just about every MPC8xxx platform.  Not just a different value, but a
> > totally different internal clock.  Sometimes is CCB, sometimes CCB/2,
> > sometimes tsec2's clock, etc.
>
> On which SOC is it the tesc2 clock?

834x

>
> >  Sometimes the two i2c controllers don't even
> > have the same clock.
>
> On which platform is that the case?  I thought I had all 8[356]xx
> boards covered.  Did I miss some?

All 83xx other than 832x.



More information about the i2c mailing list