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AM5728: AM5728供电问题

Part Number: AM5728
Other Parts Discussed in Thread: TPS659037

最近打算用AM5728,然后电源芯片也用官方推荐的TPS65037,但是在浏览问题时看到下面一个帖子

AM5728无法通过i2c配置TPS6590375电源管理芯片,各通道电压输出正常,内核启动卡在Waiting for root device PARTUUID=140fed4a-02..

https://e2echina.ti.com/support/processors/f/processors-forum/172416/am5728-i2c-tps6590377-waiting-for-root-device-partuuid-140fed4a-02

我的疑惑是,TPS6590375的正常工作需要AM5728给它指令吗?如果是的话,TPS6590375没有正常工作的话就没有电压,没有电压AM5728无法正常工作,也就无法用I2C来给TPS6590375指令,感觉两个绕在一起了。

如果不是上面的理解,TPS659037的正常输出电压不需要I2C来配置的话,那么上面链接中,为什么会AM5728的初始化为什么涉及到TPS659037?难道要读取TPS65的状态?

谢谢