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AM335X 网口0问题?



目前采用AM3358B产品进入小PP阶段,发现部分产品网口0不稳定,40Pcs中大概有1/4出现这样的问题。具体表现为从Nand启动后网口0 ping不通,软复位和硬复位都无法解决,只有重新上电才有可能解决。而且上电如果网口0能正常工作则无论怎么复位都不会有问题。网口采用的双RGMII模式,PHY是realtek RTL8211CL。麻烦各位分析下有可能什么原因引起?