diff --git a/boards/arm/mimxrt1020_evk/Kconfig.defconfig b/boards/arm/mimxrt1020_evk/Kconfig.defconfig
index 29c0a4cd9eafce..f8f978802190f0 100644
--- a/boards/arm/mimxrt1020_evk/Kconfig.defconfig
+++ b/boards/arm/mimxrt1020_evk/Kconfig.defconfig
@@ -50,4 +50,24 @@ config ETH_MCUX_0
 
 endif # NETWORKING
 
+if CODE_ITCM
+
+config FLASH_SIZE
+	default $(dt_int_val,DT_NXP_IMX_ITCM_0_SIZE,K)
+
+config FLASH_BASE_ADDRESS
+	default $(dt_hex_val,DT_NXP_IMX_ITCM_0_BASE_ADDRESS)
+
+endif # CODE_ITCM
+
+if CODE_QSPI
+
+config FLASH_SIZE
+	default $(dt_int_val,DT_NXP_IMX_FLEXSPI_402A8000_SIZE_1,K)
+
+config FLASH_BASE_ADDRESS
+	default $(dt_hex_val,DT_NXP_IMX_FLEXSPI_402A8000_BASE_ADDRESS_1)
+
+endif
+
 endif # BOARD_MIMXRT1020_EVK
diff --git a/boards/arm/mimxrt1020_evk/mimxrt1020_evk.dts b/boards/arm/mimxrt1020_evk/mimxrt1020_evk.dts
index 3be395bb3c5ddb..cf7018b8173da4 100644
--- a/boards/arm/mimxrt1020_evk/mimxrt1020_evk.dts
+++ b/boards/arm/mimxrt1020_evk/mimxrt1020_evk.dts
@@ -27,11 +27,6 @@
 	};
 
 	chosen {
-#if defined(CONFIG_CODE_ITCM)
-		zephyr,flash = &itcm0;
-#elif defined(CONFIG_CODE_QSPI)
-		zephyr,flash = &is25wp064;
-#endif
 		zephyr,sram = &dtcm0;
 		zephyr,console = &uart1;
 		zephyr,shell-uart = &uart1;
diff --git a/boards/arm/mimxrt1050_evk/Kconfig.defconfig b/boards/arm/mimxrt1050_evk/Kconfig.defconfig
index 531ff6f2963edc..9e63c308a30fc6 100644
--- a/boards/arm/mimxrt1050_evk/Kconfig.defconfig
+++ b/boards/arm/mimxrt1050_evk/Kconfig.defconfig
@@ -53,6 +53,44 @@ config UART_MCUX_LPUART_3
 
 endif # UART_MCUX_LPUART
 
+if CODE_ITCM
+
+config FLASH_SIZE
+	default $(dt_int_val,DT_NXP_IMX_ITCM_0_SIZE,K)
+
+config FLASH_BASE_ADDRESS
+	default $(dt_hex_val,DT_NXP_IMX_ITCM_0_BASE_ADDRESS)
+
+endif # CODE_ITCM
+
+if CODE_HYPERFLASH || CODE_QSPI
+
+config FLASH_SIZE
+	default $(dt_int_val,DT_NXP_IMX_FLEXSPI_402A8000_SIZE_1,K)
+
+config FLASH_BASE_ADDRESS
+	default $(dt_hex_val,DT_NXP_IMX_FLEXSPI_402A8000_BASE_ADDRESS_1)
+
+endif
+
+if DATA_DTCM
+
+config SRAM_SIZE
+	default $(dt_int_val,DT_NXP_IMX_DTCM_0_SIZE,K)
+
+config SRAM_BASE_ADDRESS
+	default $(dt_hex_val,DT_NXP_IMX_DTCM_0_BASE_ADDRESS)
+endif
+
+if DATA_SDRAM
+
+config SRAM_SIZE
+	default $(dt_int_val,DT_MMIO_SRAM_80000000_SIZE,K)
+
+config SRAM_BASE_ADDRESS
+	default $(dt_hex_val,DT_MMIO_SRAM_80000000_BASE_ADDRESS)
+endif
+
 if NETWORKING
 
 config NET_L2_ETHERNET
diff --git a/boards/arm/mimxrt1050_evk/mimxrt1050_evk.dts b/boards/arm/mimxrt1050_evk/mimxrt1050_evk.dts
index 07f7a342090cb8..0269471c5927d6 100644
--- a/boards/arm/mimxrt1050_evk/mimxrt1050_evk.dts
+++ b/boards/arm/mimxrt1050_evk/mimxrt1050_evk.dts
@@ -28,16 +28,6 @@
 	};
 
 	chosen {
-#if defined(CONFIG_CODE_ITCM)
-		zephyr,flash = &itcm0;
-#elif defined(CONFIG_CODE_HYPERFLASH)
-		zephyr,flash = &hyperflash0;
-#endif
-#if defined(CONFIG_DATA_SDRAM)
-		zephyr,sram = &sdram0;
-#else
-		zephyr,sram = &dtcm0;
-#endif
 		zephyr,console = &uart1;
 		zephyr,shell-uart = &uart1;
 	};
diff --git a/boards/arm/mimxrt1050_evk/mimxrt1050_evk_qspi.dts b/boards/arm/mimxrt1050_evk/mimxrt1050_evk_qspi.dts
index c3272de62d20c0..2fc669c5abdea4 100644
--- a/boards/arm/mimxrt1050_evk/mimxrt1050_evk_qspi.dts
+++ b/boards/arm/mimxrt1050_evk/mimxrt1050_evk_qspi.dts
@@ -6,16 +6,6 @@
 
 #include "mimxrt1050_evk.dts"
 
-/ {
-	chosen {
-#if defined(CONFIG_CODE_ITCM)
-		zephyr,flash = &itcm0;
-#elif defined(CONFIG_CODE_QSPI)
-		zephyr,flash = &is25wp064;
-#endif
-	};
-};
-
 /delete-node/ &hyperflash0;
 
 &flexspi0 {
diff --git a/boards/arm/mimxrt1060_evk/Kconfig.defconfig b/boards/arm/mimxrt1060_evk/Kconfig.defconfig
index e334f3c9331b3c..7a74fffd00205d 100644
--- a/boards/arm/mimxrt1060_evk/Kconfig.defconfig
+++ b/boards/arm/mimxrt1060_evk/Kconfig.defconfig
@@ -31,4 +31,24 @@ config UART_MCUX_LPUART_3
 
 endif # UART_MCUX_LPUART
 
+if CODE_ITCM
+
+config FLASH_SIZE
+	default $(dt_int_val,DT_NXP_IMX_ITCM_0_SIZE,K)
+
+config FLASH_BASE_ADDRESS
+	default $(dt_hex_val,DT_NXP_IMX_ITCM_0_BASE_ADDRESS)
+
+endif # CODE_ITCM
+
+if CODE_HYPERFLASH || CODE_QSPI
+
+config FLASH_SIZE
+	default $(dt_int_val,DT_NXP_IMX_FLEXSPI_402A8000_SIZE_1,K)
+
+config FLASH_BASE_ADDRESS
+	default $(dt_hex_val,DT_NXP_IMX_FLEXSPI_402A8000_BASE_ADDRESS_1)
+
+endif
+
 endif # BOARD_MIMXRT1060_EVK || BOARD_MIMXRT1060_EVK_HYPERFLASH
diff --git a/boards/arm/mimxrt1060_evk/mimxrt1060_evk.dts b/boards/arm/mimxrt1060_evk/mimxrt1060_evk.dts
index 5e869c027d37e9..9b74f470c070ba 100644
--- a/boards/arm/mimxrt1060_evk/mimxrt1060_evk.dts
+++ b/boards/arm/mimxrt1060_evk/mimxrt1060_evk.dts
@@ -24,11 +24,6 @@
 	};
 
 	chosen {
-#if defined(CONFIG_CODE_ITCM)
-		zephyr,flash = &itcm0;
-#elif defined(CONFIG_CODE_QSPI)
-		zephyr,flash = &is25wp064;
-#endif
 		zephyr,sram = &dtcm0;
 		zephyr,console = &uart1;
 		zephyr,shell-uart = &uart1;
diff --git a/boards/arm/mimxrt1060_evk/mimxrt1060_evk_hyperflash.dts b/boards/arm/mimxrt1060_evk/mimxrt1060_evk_hyperflash.dts
index c06a5d60db54d6..1d31d3fa2d2ca7 100644
--- a/boards/arm/mimxrt1060_evk/mimxrt1060_evk_hyperflash.dts
+++ b/boards/arm/mimxrt1060_evk/mimxrt1060_evk_hyperflash.dts
@@ -6,16 +6,6 @@
 
 #include "mimxrt1060_evk.dts"
 
-/ {
-	chosen {
-#if defined(CONFIG_CODE_ITCM)
-		zephyr,flash = &itcm0;
-#elif defined(CONFIG_CODE_HYPERFLASH)
-		zephyr,flash = &hyperflash0;
-#endif
-	};
-};
-
 /delete-node/ &is25wp064;
 &flexspi0 {
 	reg = <0x402a8000 0x4000>, <0x60000000 0x4000000>;
diff --git a/boards/arm/mimxrt1064_evk/Kconfig.defconfig b/boards/arm/mimxrt1064_evk/Kconfig.defconfig
index 93a8ce01f76a0e..9b2ebd892b3078 100644
--- a/boards/arm/mimxrt1064_evk/Kconfig.defconfig
+++ b/boards/arm/mimxrt1064_evk/Kconfig.defconfig
@@ -10,6 +10,26 @@ if BOARD_MIMXRT1064_EVK
 config BOARD
 	default "mimxrt1064_evk"
 
+if CODE_ITCM
+
+config FLASH_SIZE
+	default $(dt_int_val,DT_NXP_IMX_ITCM_0_SIZE,K)
+
+config FLASH_BASE_ADDRESS
+	default $(dt_hex_val,DT_NXP_IMX_ITCM_0_BASE_ADDRESS)
+
+endif # CODE_ITCM
+
+if CODE_INTERNAL_QSPI
+
+config FLASH_SIZE
+	default $(dt_int_val,DT_NXP_IMX_FLEXSPI_402A8000_SIZE_1,K)
+
+config FLASH_BASE_ADDRESS
+	default $(dt_hex_val,DT_NXP_IMX_FLEXSPI_402A8000_BASE_ADDRESS_1)
+
+endif
+
 if GPIO_MCUX_IGPIO
 
 config GPIO_MCUX_IGPIO_1
diff --git a/boards/arm/mimxrt1064_evk/mimxrt1064_evk.dts b/boards/arm/mimxrt1064_evk/mimxrt1064_evk.dts
index e054a445774f97..6351f4efdf24f6 100644
--- a/boards/arm/mimxrt1064_evk/mimxrt1064_evk.dts
+++ b/boards/arm/mimxrt1064_evk/mimxrt1064_evk.dts
@@ -24,11 +24,6 @@
 	};
 
 	chosen {
-#if defined(CONFIG_CODE_ITCM)
-		zephyr,flash = &itcm0;
-#elif defined(CONFIG_CODE_INTERNAL_QSPI)
-		zephyr,flash = &w25q32jvwj0;
-#endif
 		zephyr,sram = &dtcm0;
 		zephyr,console = &uart1;
 		zephyr,shell-uart = &uart1;