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! -- Email: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx> Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
