mpc5200 and spi bus

Asier Llano Palacios a.llano at usyscom.com
Wed May 2 18:02:44 EST 2007


El vie, 27-04-2007 a las 14:41 +0200, Txema Lopez escribió:
> Asier Llano Palacios wrote:
> 
> >I'm working with the a linux 2.6.20.9 with patches from Sylvain's tree.
> >I've been looking the Den'x 2.5.xx SPI support and it seems that it is
> >done through GPIOs. 
> >
> ¿2.5.xx?. I talked about a 2.4.xx version.
> 
Sorry this was a mistyping. I was pretending to say 2.4.xx.

> >I'd like a native SPI implementation, using the
> >hardware of the MPC5200, because of the performance issue of using a
> >GPIO, because I'd like to use it at full speed.
> >
> >Is it done really with GPIOs? If so, is there any other implementation?
> >  
> >
> Yes, you can use the MPC5200's dedicated SPI (spi-algo-mpc5xxx.c) or use 
> a PSC in SPI codec mode (spi-algo-mpc5xxx-psc.c).

Thank you very much. I don't know where I was looking. I've seen the
code and it seems interesting and easy to port.

> >If it is possible I'd like it to be for 2.6.x.
> >  
> >
> I don't know nothing about the MPC5200 SPI implementation in the 2.6.x 
> kernel.
> 

I'll have a look. If don't see anything the code from 2.4.x is good
starting point to port it.

> Best regards,

Thank you very much for the information. 
 
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