fsl spi questions & patch

Scott Wood scottwood at freescale.com
Sat Dec 1 03:45:31 EST 2012

On 11/28/2012 03:39:22 AM, Frans Meulenbroeks wrote:
> Hi,
> I've been playing with spi on mpc8313e and have some things on
> spi-fsl-spi.c:
> Is QE useful on 8313?
> I've tried it (using cpu-qe in my dts file) and see in the boot log  
> that it
> is used, but I do not really see any effect when it comes to  
> performance or
> cpu usage.

8313 does not have a QE.  The "effect" when you do have a QE and use it  
is that you can talk to the peripherals that are connected to the QE.   
The effect when you modify the device tree to say the board has  
hardware that it doesn't have is generally bad.


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