That’s because that’s not the problem at all, just a matter of correct regulator configuration to not turn the modem off during suspend. The thing that would have to be done first is creating a branch of the ATF where both suspend and devfreq could work at the same time and this is the main thing blocking suspend to ram at the moment. With that in place there are several smaller issues like the dwc3 thing that will have to be debugged one by one.