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AM1806采用SPI 启动(RBL直接跳转到SPI flash中uboot.bin),请问如何选择AIS header 中spi clock,规则是什么?

Other Parts Discussed in Thread: AM1806

AM1806采用SPI 启动即uboot,kernel 和filesystem都放在SPI Flash中。 编译出uboot 后运用AISgen_d800k008.exe生成启动文件,请问我们选用BOOT Mode为SPI1 Flash后,SPI Clock 应该如何选择,默认情况下是1 MHZ,选择这个的标准是什么呢?谢谢