• Microchip SST25VFxxxB SPI Flash
• Microchip SST26VFxxxB SPI Flash
• Microchip SST25VFxxxA SPI Flash
• Winbond SPI Flash
• ISSI IS25CQ032 SPI Flash
• ISSI SPI Flash
• Macronix SPI Flash
• Adesto SPI Flash

Only tested with 4MB (32Mbit) Flash at maximum.