SoM Single power Supply for VIN and 3v3

Hardware
1

When designing a power supply for the SoMs (M-SoM B-SoM), we must take into account both the processor power supply requirements, and the modem power supply requirements.

The M404 has the following power requirements:
Processor: 3.0-3.6v
Modem: 3.3-4.4v

For the B404X:
Processor: 3.0-3.6v
Modem: 3.3-4.3v

So it seems we could power these SoM’s with a single 3.4 - 3.5v power supply, eliminating the need for multiple regulators.
Assuming that all 3v3 peripherals are 3.5v tolerant, are there any downsides to this approach?

2

The recommended minimum voltage for the cellular modem (VCC) is 3.6V, which is higher than the maximum voltage of 3V3, which is why two power supply rails are required.