As mentioned in SOM datasheet, LDO4 is by default set to 1.2V in PMIC OTP and on power-up it will be 1.2V.
And after booting, it can be configured between 1.2V and 3.3V through software (FSBL).
For further product inquiries, please get in touch with our sales team at mktg@iwave-global.com
Please find the detailed product information here:
ZU49/ZU39/ZU29DR RFSoC System on Module