Zhao Honle,
请问你的芯片USB驱动配置的是host模式么？这个接口接个u盘什么的可以正常工作么？
切换模式芯片必须要重启，不知道你上面的流程是在系统上电后就立即测量的么？用test packet测试眼图是没有问题。
https://e2e.ti.com/support/dsp/davinci_digital_media_processors/f/717/p/154545/912736#912736
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