Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Allwinner/D1H/SMHC[2]/SMHC_FIFOTH#0x0
BSIZE_OF_TRANS=T1
FIFO Water Level Register
TX Trigger Level
RX Trigger Level
sBurst Size of Multiple Transaction
0 (T1): 1 transfer
1 (T4): 4 transfers
2 (T8): 8 transfers
3 (T16): 16 transfers
https://github.com/cmsis-svd/cmsis-svd-data