[PATCH v4] powerpc/5200: Add mpc5200-spi (non-PSC) device driver

[Grant Likely]

On Tue, Jun 23, 2009 at 10:31 AM, Kári
Davíðsson<kari.davidsson at marel.com> wrote:
> Lowered my SPI clock down to 1MHz (from 50MHz (in steps of 10MHz).
> At 1Mhz the driver stops starving the rest of the kernel.
>
> What is interesting is that due to the low duty cycle of the SPI port
> the transfer rate at 1MHz and 50Mhz is almost the same.
>
> I suggest that the driver simply limits max frequency to 1Mhz.

Sounds good to me.  Thanks for the testing!

> This (very limited) SPI pherperial does not handle any more anyways.

indeed.

g.


-- 
Grant Likely, B.Sc., P.Eng.
Secret Lab Technologies Ltd.