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d088c33b64
In one dma transfer, the data transfer width can be configured and it is limited by source or destination peripheral width, tx_width will save the transfer width, but for memcpy, either source or destination transfer width is taken as tx_width. Signed-off-by: Elen Song <elen.song@atmel.com> Signed-off-by: Vinod Koul <vinod.koul@intel.com>