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关于L138内核启动以及RTC的问题



我们设计的板子中,L138的RTC通过5V经TPS770012转为1.2V供电

板子在长时间断电后启动,有时可以正常启动,有时跑完UBoot后系统停在 booting the kernel.....,查看buf_log发现内核跑完时钟初始化后就停止了

难道是TPS770012可以提供的电流太小,请问这个情况是能否从软件解决,还是硬件有什么问题呢?