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DM8107 uboot启动时出现随机卡死在第一阶段

Other Parts Discussed in Thread: DM385, DM8107

我司采用主控DM8107,DDR3采用MT41K128M16JT-125:K,启动过程中会出现随机事件导致系统无法运行(串口,看门狗等均无法作用,只能强制断电或复位),后经测试随机事件中,发现DDR3未进行复位,DM385没有送出DDR复位信号,uboot没有进入第二阶段
已排查:1.电源电压正常且电流无异常2.电源上电顺序正常,3.一旦启动系统启动运行稳定