Re: [PATCH 1/1] crypto: omap-sham: Adjust DMA parameters

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On Thu, Sep 02, 2010 at 05:17:35PM +0300, Dmitry Kasatkin wrote:
> From: Samu Onkalo <samu.p.onkalo@xxxxxxxxx>
> 
> DMA is set to use burst mode also for source channel. It should
> descrease memory bandwidth needs.
> 
> DMA synchronization is set to use prefetch mechanism. SHAM block is behind
> L4 bus and it doesn't have fifo. SHAM block is stalling as long as the new
> data is available. It takes time to fetch data from memory and transfer it
> via L4 bus. With prefetch enabled, data is waiting in DMA fifo and SHAM block
> receives new data block faster.
> This increases SHA processing speed up to 30 percent depending on the
> bus / memory load.
> 
> Signed-off-by: Samu Onkalo <samu.p.onkalo@xxxxxxxxx>
> Signed-off-by: Dmitry Kasatkin <dmitry.kasatkin@xxxxxxxxx>

Patch applied.  Thanks!
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Email: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
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