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AM5728的官方SDK,USB1_DRVVBUS上电后一直为低电平

Other Parts Discussed in Thread: TPS2051

使用芯片TPS2051,内核启动后,量USB1_DRVVBUS一直为低电平,硬件检查过是正常的,单独把USB1_DRVVBUS当IO控制也可变成高电平,若用SDK,怎样可以使USB1_DRVVBUS变成高电平,需要检查修改的代码在什么地方?