Re: [PATCH] dmaengine: pl330: _prep_dma_memcpy: Fix wrong burst size

2020-11-16 Thread Vinod Koul
On 14-11-20, 11:55, Sugar Zhang wrote: > Actually, burst size is equal to '1 << desc->rqcfg.brst_size'. > we should use burst size, not desc->rqcfg.brst_size. > > dma memcpy performance on Rockchip RV1126 > @ 1512MHz A7, 1056MHz LPDDR3, 200MHz DMA: > > dmatest: > > /# echo dma0chan0 >

[PATCH] dmaengine: pl330: _prep_dma_memcpy: Fix wrong burst size

2020-11-13 Thread Sugar Zhang
Actually, burst size is equal to '1 << desc->rqcfg.brst_size'. we should use burst size, not desc->rqcfg.brst_size. dma memcpy performance on Rockchip RV1126 @ 1512MHz A7, 1056MHz LPDDR3, 200MHz DMA: dmatest: /# echo dma0chan0 > /sys/module/dmatest/parameters/channel /# echo 4194304 >