AM4376: Board reboots on shutdown

Hi Sir 

We used  ti-processor-sdk-linux-am437x-evm-05.03.00.07 with below HW design (TPS65218D0)

System still reboot when we tried to shutdown through "shutdown" and "poweroff"

And we found  RTC_PMIC_EN get pull low for 500 ms, then get pulled high (And system "resets" instead of "power off" )

Do you have any suggestion how to get into power-off state.?

BR

Yimin