[QUESTION] MPC834x DMA Support

KRONSTORFER Horst Horst.KRONSTORFER at frequentis.com
Fri Apr 28 03:23:29 EST 2006


> -----Original Message-----
> From: wd at denx.de [mailto:wd at denx.de] 
> Sent: Donnerstag, 27. April 2006 18:28
> To: KRONSTORFER Horst
> Cc: linuxppc-dev at ozlabs.org
> Subject: Re: [QUESTION] MPC834x DMA Support 
> 
> In message 
> <C5BA91F04186584EB68FD42BB4993E6BC1B5C6 at FRQWOLEX01.frequentis.
> frq> you wrote:
> > 
> > does anyone know if the mpc834x's dma unit supports dma 
> operation only 
> > between pci and csb or also between csb and csb, f.e. devices 
> > connected via the lbc (f.e. ram and a dsp)?
> 
> This should work. We used this  to  initialize  ECC  memory.  
> But  be careful  about your performance expectations - ask 
> Freescale what you can get out of memory to memory DMA. 
> [Sorry, I'm  still  waiting  for replies from FSL myself.]
>

thanks for the hints!

-h
 
> Best regards,
> 
> Wolfgang Denk
> 
> --
> Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
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