diff --git a/ports/atmel-samd/boards/grandcentral_m4_express/mpconfigboard.mk b/ports/atmel-samd/boards/grandcentral_m4_express/mpconfigboard.mk
index 2605c9f555..bb8a2b0d95 100644
--- a/ports/atmel-samd/boards/grandcentral_m4_express/mpconfigboard.mk
+++ b/ports/atmel-samd/boards/grandcentral_m4_express/mpconfigboard.mk
@@ -6,8 +6,8 @@ USB_MANUFACTURER = "Adafruit Industries LLC"
 
 QSPI_FLASH_FILESYSTEM = 1
 
-EXTERNAL_FLASH_DEVICE_COUNT = 1
-EXTERNAL_FLASH_DEVICES = "GD25Q64C"
+EXTERNAL_FLASH_DEVICE_COUNT = 2
+EXTERNAL_FLASH_DEVICES = "W25Q64JV_IQ, GD25Q64C"
 LONGINT_IMPL = MPZ
 
 CHIP_VARIANT = SAMD51P20A
diff --git a/ports/atmel-samd/boards/pyportal/mpconfigboard.mk b/ports/atmel-samd/boards/pyportal/mpconfigboard.mk
index 649bbb6489..aad81e94ef 100644
--- a/ports/atmel-samd/boards/pyportal/mpconfigboard.mk
+++ b/ports/atmel-samd/boards/pyportal/mpconfigboard.mk
@@ -6,8 +6,8 @@ USB_MANUFACTURER = "Adafruit Industries LLC"
 
 QSPI_FLASH_FILESYSTEM = 1
 
-EXTERNAL_FLASH_DEVICE_COUNT = 1
-EXTERNAL_FLASH_DEVICES = "GD25Q64C"
+EXTERNAL_FLASH_DEVICE_COUNT = 2
+EXTERNAL_FLASH_DEVICES = "W25Q64JV_IQ, GD25Q64C"
 LONGINT_IMPL = MPZ
 
 CHIP_VARIANT = SAMD51J20A
diff --git a/ports/atmel-samd/boards/trellis_m4_express/mpconfigboard.mk b/ports/atmel-samd/boards/trellis_m4_express/mpconfigboard.mk
index 7094b79be8..5c310cfda2 100644
--- a/ports/atmel-samd/boards/trellis_m4_express/mpconfigboard.mk
+++ b/ports/atmel-samd/boards/trellis_m4_express/mpconfigboard.mk
@@ -5,8 +5,8 @@ USB_PRODUCT = "Trellis M4 Express"
 USB_MANUFACTURER = "Adafruit Industries LLC"
 
 QSPI_FLASH_FILESYSTEM = 1
-EXTERNAL_FLASH_DEVICE_COUNT = 1
-EXTERNAL_FLASH_DEVICES = GD25Q64C
+EXTERNAL_FLASH_DEVICE_COUNT = 2
+EXTERNAL_FLASH_DEVICES = "W25Q64JV_IQ, GD25Q64C"
 LONGINT_IMPL = MPZ
 
 CHIP_VARIANT = SAMD51G19A