Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Keil/AT32F405xx_v2/QSPI1/CTRL#0x0
Control register
SPI clock divider
Sckout mode
XIP port idle status
Abort instruction
Busy bit of spi status
XIP read command flush
XIP port selection
encryption key enable
https://github.com/cmsis-svd/cmsis-svd-data