diff --git a/configs/rpi_4_32b_defconfig b/configs/rpi_4_32b_defconfig
index 52bdd0ab02..f369bb93bd 100644
--- a/configs/rpi_4_32b_defconfig
+++ b/configs/rpi_4_32b_defconfig
@@ -4,10 +4,10 @@ CONFIG_SYS_TEXT_BASE=0x00008000
 CONFIG_TARGET_RPI_4_32B=y
 CONFIG_SYS_MALLOC_F_LEN=0x2000
 CONFIG_ENV_SIZE=0x4000
-CONFIG_NR_DRAM_BANKS=2
+CONFIG_NR_DRAM_BANKS=4
 CONFIG_DISTRO_DEFAULTS=y
 CONFIG_OF_BOARD_SETUP=y
-# CONFIG_ARCH_FIXUP_FDT_MEMORY is not set
+CONFIG_ARCH_FIXUP_FDT_MEMORY=y
 CONFIG_MISC_INIT_R=y
 # CONFIG_DISPLAY_CPUINFO is not set
 # CONFIG_DISPLAY_BOARDINFO is not set
diff --git a/configs/rpi_4_defconfig b/configs/rpi_4_defconfig
index 2ce1b6b6ec..d4b586cf3a 100644
--- a/configs/rpi_4_defconfig
+++ b/configs/rpi_4_defconfig
@@ -4,10 +4,10 @@ CONFIG_SYS_TEXT_BASE=0x00080000
 CONFIG_TARGET_RPI_4=y
 CONFIG_SYS_MALLOC_F_LEN=0x2000
 CONFIG_ENV_SIZE=0x4000
-CONFIG_NR_DRAM_BANKS=2
+CONFIG_NR_DRAM_BANKS=4
 CONFIG_DISTRO_DEFAULTS=y
 CONFIG_OF_BOARD_SETUP=y
-# CONFIG_ARCH_FIXUP_FDT_MEMORY is not set
+CONFIG_ARCH_FIXUP_FDT_MEMORY=y
 CONFIG_MISC_INIT_R=y
 # CONFIG_DISPLAY_CPUINFO is not set
 # CONFIG_DISPLAY_BOARDINFO is not set
diff --git a/configs/rpi_arm64_defconfig b/configs/rpi_arm64_defconfig
index 66c4a5368c..f8a369f8f1 100644
--- a/configs/rpi_arm64_defconfig
+++ b/configs/rpi_arm64_defconfig
@@ -4,7 +4,7 @@ CONFIG_SYS_TEXT_BASE=0x00080000
 CONFIG_TARGET_RPI_ARM64=y
 CONFIG_SYS_MALLOC_F_LEN=0x2000
 CONFIG_ENV_SIZE=0x4000
-CONFIG_NR_DRAM_BANKS=2
+CONFIG_NR_DRAM_BANKS=4
 CONFIG_DISTRO_DEFAULTS=y
 CONFIG_OF_BOARD_SETUP=y
 CONFIG_USE_PREBOOT=y