Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Renesas Electronics/R7FA6M3AH/GLCDC/GAMB_LUT7#0x0
GAIN13=GAIN13, GAIN12=GAIN12
Gamma B Correction Block Table Setting Register 7
Gain value of area 13Unsigned 11-bit fixed point
0 (GAIN13): GAIN13/1024
Gain value of area 12Unsigned 11-bit fixed point
0 (GAIN12): GAIN12/1024
https://github.com/cmsis-svd/cmsis-svd-data