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am335x gpmc config



我在u-boot里,添加一个命令,来操作gpmc时,写一次操作( 如:(*(volatile unsigned int *)(0x10000000) = (0xf))),用示波器是出现两次cs拉低(ale信号也一样,就象是2次写操作),这是什么原因?

我的gpmc寄存器配制如下:

cs.config1 = 0x1210
cs.config2 = 0x101400
cs.config3 = 0x60743
cs.config4 = 0xf06b438
cs.config5 = 0x131015
cs.config6 = 0x9f0f0080
cs.config7 = 0x50
sys config = 0x8
config = 0xa02