Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Silicon Labs/EFR32BG22C222F352GN32/SYSCFG_S/DMEM0RETNCTRL#0x0
RAMRETNCTRL=ALLON
Configure to provide general RAM retention configuration.
DMEM0 blockset retention control
0 (ALLON): None of the RAM blocks powered down
1 (BLK0): Power down RAM block 0
2 (BLK1): Power down RAM block 1
https://github.com/cmsis-svd/cmsis-svd-data