Messages in this thread | | | Subject | Re: [PATCH 2/3] dmaengine: pl330: enable burst mode by parsing dt | From | Xing Zheng <> | Date | Sun, 7 Aug 2016 17:20:33 +0800 |
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Hi Shawn,
On 2016年08月05日 10:53, Shawn Lin wrote: > Currently pl330 use single mode defaultly. But burst > mode can improve efficiency of memory accessing. We > couldn't enable it by defalut in case of breaking any > Socs which don't support it. > > With burst mode supported, we could see the improvement > significantly when tesing SPI transfer etc. > > default single mode > [ 88.292550] spi write 65536*1 cost 32402us speed:2022KB/S > > After applied with burst mode(len 16) > [ 17.625296] spi write 65536*1 cost 17830us speed:3675KB/S > > Cc: Huibin Hong <huibin.hong@rock-chips.com> > Cc: Xing Zheng <zhengxing@rock-chips.com> > Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com> > --- > Tested-by: Xing Zheng <zhengxing@rock-chips.com>
Thanks
-- - Xing Zheng
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