like described in the i.MX6 Datsheet Rev.4 07/2015 on page 32:
"VDD_SNVS_IN supply must be turned ON before any other power supply. It may be connected
(shorted) with VDD_HIGH_IN supply."
I connected VDD_SNVS_IN and VDD_HIGH_IN at the i.MX6. Those rails are powered from the VGEN5 (+3V0_VDDHIGH) by the PMIC MMPF0100NPAZES with custom fuses. It's set to be powered first after power on.
Unfortunately I get a strange behaviour on the +3V0_VDDHIGH rail (which is connected to the VDD_SNVS_IN and VDD_HIGH_IN of the i.MX6). It looks like there is a diode voltage drop on the +3V0_VDDHIGH rail (2,6V instead of 3,0V) until the second rail +1V375_VDDARM gets powered by the PMIC.
Could this be a problem?
Thank you very much in advance!