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gpmc挂nand，prefetch and write_posting enging如何实现？

min liu3
Prodigy 90 points


想提高一下nand的读写速度，手册上有提到prefetch and write-posting engine方式，是不是只要设置GPMC_PREFETCH_CONFIG1和GPMC_PREFETCH_CONTROL寄存器即可，设置了好像没什么效果呢？这就是dma方式么？求教，谢谢。