Bank/Extended address registers are used to access the flash
which has size > 16MiB in 3-byte addressing.
+config SF_DUAL_FLASH
+ bool "SPI DUAL flash memory support"
+ depends on SPI_FLASH
+ help
+ Enable this option to support two flash memories connected to a single
+ controller. Currently Xilinx Zynq qspi supports this.
+
if SPI_FLASH
config SPI_FLASH_ATMEL