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OMP-L138 How to using DMA fast copy uImage to DDR in uboot?

CharlesFan
Prodigy 90 points

hi.

all

when i start up my board ,

there is take a long time ( 11 seconds )  to copy uImage and rootfs form spi flash ,

How to using DMA fast copy uImage to DDR in uboot?

Thanks

Charlesfan