PMIC not shutting down after CPU power off

Hi everyone,

we are running for our project a BBB on Debian (stock image and updated kernel to bone71) on a battery setup. In our circuit, we have an external RTC that wakes up the BBB on a set interval to do reading and then close back down. Our problem is that sometimes the CPU shuts down but not the PMIC (TPS65217). At that moment, any signal on the power button is ignored but the reset button still works. On the BBB, the power LED is lit up, but all user LEDs are closed down.

Has any one had simliar problems or is there any known fix for PMIC problems?

Thank you for your help.

Check out the following:

Bone VDD_3V3EXP Disable Issues

BBB battery connected doesn’t powerdown VDD_3V3EXP P9_3/4.

BBB operation with battery

There’s a bunch more references, but this describes a hardware fix.