Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Atmel/ATSAMA5D31/MPDDRC/LPDDR2_LPR#0x0
MPDDRC LPDDR2 Low-power Register
Bank Mask Bit/PASR
Segment Mask Bit
Drive strength
https://github.com/cmsis-svd/cmsis-svd-data