diff --git a/configs/r8a779h0_grayhawk_defconfig b/configs/r8a779h0_grayhawk_defconfig
index 73dd62e..ef70921 100644
--- a/configs/r8a779h0_grayhawk_defconfig
+++ b/configs/r8a779h0_grayhawk_defconfig
@@ -1,75 +1,23 @@
+#include <configs/renesas_rcar4.config>
+
 CONFIG_ARM=y
-CONFIG_ARCH_CPU_INIT=y
 CONFIG_ARCH_RENESAS=y
-CONFIG_SYS_MALLOC_LEN=0x4000000
+CONFIG_RCAR_GEN4=y
 CONFIG_ENV_SIZE=0x20000
 CONFIG_ENV_OFFSET=0xFFFE0000
-CONFIG_DM_GPIO=y
 CONFIG_DEFAULT_DEVICE_TREE="renesas/r8a779h0-gray-hawk-single"
-CONFIG_RCAR_GEN4=y
 CONFIG_TARGET_GRAYHAWK=y
-CONFIG_SYS_MONITOR_LEN=1048576
-CONFIG_SYS_LOAD_ADDR=0x58000000
 CONFIG_SYS_CLK_FREQ=16666666
-# CONFIG_PSCI_RESET is not set
 CONFIG_SYS_BOOT_GET_CMDLINE=y
 CONFIG_SYS_BARGSIZE=2048
-CONFIG_REMAKE_ELF=y
-CONFIG_FIT=y
-CONFIG_SUPPORT_RAW_INITRD=y
-CONFIG_USE_BOOTARGS=y
-CONFIG_BOOTARGS="root=/dev/nfs rw nfsroot=192.168.0.1:/export/rfs ip=192.168.0.20"
-CONFIG_USE_BOOTCOMMAND=y
 CONFIG_BOOTCOMMAND="tftp 0x48080000 Image && tftp 0x48000000 Image-r8a779h0-gray-hawk.dtb && booti 0x48080000 - 0x48000000"
 CONFIG_DEFAULT_FDT_FILE="r8a779h0-gray-hawk.dtb"
 CONFIG_SYS_CBSIZE=2048
-CONFIG_SYS_MALLOC_BOOTPARAMS=y
-CONFIG_HUSH_PARSER=y
-CONFIG_CMD_BOOTZ=y
-CONFIG_CMD_GPIO=y
-CONFIG_CMD_I2C=y
-CONFIG_CMD_MMC=y
-CONFIG_CMD_SPI=y
-CONFIG_CMD_DHCP=y
-CONFIG_CMD_MII=y
-CONFIG_CMD_PING=y
-CONFIG_CMD_EXT2=y
-CONFIG_CMD_EXT4=y
-CONFIG_CMD_EXT4_WRITE=y
-CONFIG_CMD_FAT=y
-CONFIG_CMD_FS_GENERIC=y
-CONFIG_OF_CONTROL=y
 CONFIG_ENV_IS_IN_MMC=y
-CONFIG_SYS_RELOC_GD_ENV_ADDR=y
 CONFIG_SYS_MMC_ENV_PART=2
-CONFIG_VERSION_VARIABLE=y
-CONFIG_REGMAP=y
-CONFIG_SYSCON=y
-CONFIG_CLK=y
-CONFIG_CLK_RENESAS=y
-CONFIG_RCAR_GPIO=y
-CONFIG_DM_I2C=y
-CONFIG_SYS_I2C_RCAR_I2C=y
-CONFIG_MMC_IO_VOLTAGE=y
-CONFIG_MMC_UHS_SUPPORT=y
-CONFIG_MMC_HS200_SUPPORT=y
-CONFIG_RENESAS_SDHI=y
-CONFIG_MTD=y
-CONFIG_DM_SPI_FLASH=y
-CONFIG_SPI_FLASH_SPANSION=y
-# CONFIG_SPI_FLASH_USE_4K_SECTORS is not set
 CONFIG_BITBANGMII=y
 CONFIG_BITBANGMII_MULTI=y
-CONFIG_PHY_ANEG_TIMEOUT=20000
 CONFIG_PHY_MICREL=y
 CONFIG_PHY_MICREL_KSZ90X1=y
-CONFIG_DM_ETH_PHY=y
 CONFIG_RENESAS_RAVB=y
-CONFIG_DM_REGULATOR=y
-CONFIG_DM_REGULATOR_FIXED=y
-CONFIG_DM_REGULATOR_GPIO=y
 CONFIG_BAUDRATE=921600
-CONFIG_SCIF_CONSOLE=y
-CONFIG_SPI=y
-CONFIG_DM_SPI=y
-CONFIG_RENESAS_RPC_SPI=y