Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Keil/AT32F437xx_v2/QSPI1/CTRL2#0x0
control register 2
DMA handshake enable
Command complete interrupt enable
TxFIFO thod
RxFIFO thod
https://github.com/cmsis-svd/cmsis-svd-data