I am using PF3001 for restart application. I controlled the PMIC_ON_REQ of pmic chip by configure the SNVS_PMIC_ON_REQ from my imx processor. And also I enabled the PWRONRSTEN and RESTARTEN bit in PWRCTRL register of PMIC chip as per datasheet.
As per datasheet after 4 Seconds the PMIC will restart. But, in my case there is no restart. I got result like the processor is off(the software is off) and the hardware side the voltage was low.