Category: Power
tool:-
Device: MAX®10

Yes, a single regulator supply configuration is fine.
However, when using PLL, it is necessary to insert Filter into VCCA.

(Reference) Intel MAX 10 Power Management User Guide
https://www.intel.com/content/www/us/en/programmable/documentation/myt1393986555723.html
(Item of Comparison of the Intel MAX 10 Power Supply Device Options)

For Intel® MAX® 10 single-supply devices, only one power supply is required—3.0 V or 3.3 V to power the core of the FPGA.
The same power supply can be used to power the I/O if the same 3.0 V or 3.3 V voltage is required.

Quoted from <<Intel MAX 10 Power Management User Guide>>