Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Alif Semiconductor/AE302F80C1557LE_CM55_HP_View/VBAT/GPIO_CTRL#0x0
VOLT=Val_0x0
GPIO 1.8 V / 3.3 V Power Control Register
Select voltage level for the 1.8-V/3.3-V (flex) I/O pins
0 (Val_0x0): I/O pin will be used with a 3.3-V power
1 (Val_0x1): I/O pin will be used with a 1.8-V power
THIS SOFTWARE IS PROVIDED “AS IS”. NO WARRANTIES, WHETHER EXPRESS, IMPLIED OR STATUTORY, INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE. ALIF SHALL NOT, IN ANY CIRCUMSTANCES, BE LIABLE FOR SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, FOR ANY REASON WHATSOEVER.
https://github.com/cmsis-svd/cmsis-svd-data