diff --git a/arch/arm/mach-rockchip/Kconfig b/arch/arm/mach-rockchip/Kconfig
index 1e74db360768f107d6c94a3f5f1f71a3748b5082..967290f9a5ab2e6ff421b0fa3fe76d28bd9753a8 100644
--- a/arch/arm/mach-rockchip/Kconfig
+++ b/arch/arm/mach-rockchip/Kconfig
@@ -179,7 +179,7 @@ config ROCKCHIP_BOOT_MODE_REG
 
 config ROCKCHIP_SPL_RESERVE_IRAM
 	hex "Size of IRAM reserved in SPL"
-	default 0x4000
+	default 0
 	help
 	  SPL may need reserve memory for firmware loaded by SPL, whose load
 	  address is in IRAM and may overlay with SPL text area if not
diff --git a/configs/evb-rk3399_defconfig b/configs/evb-rk3399_defconfig
index 7b5ea821f9027186c4fcd1e7e64c2c92d1323cbe..e8e52c3a7cedd70d37e70010baa7a739631baf0d 100644
--- a/configs/evb-rk3399_defconfig
+++ b/configs/evb-rk3399_defconfig
@@ -4,6 +4,7 @@ CONFIG_SPL_LIBCOMMON_SUPPORT=y
 CONFIG_SPL_LIBGENERIC_SUPPORT=y
 CONFIG_SYS_MALLOC_F_LEN=0x4000
 CONFIG_ROCKCHIP_RK3399=y
+CONFIG_ROCKCHIP_SPL_RESERVE_IRAM=0x4000
 CONFIG_SPL_STACK_R_ADDR=0x80000
 CONFIG_DEFAULT_DEVICE_TREE="rk3399-evb"
 CONFIG_DEBUG_UART=y
diff --git a/configs/firefly-rk3399_defconfig b/configs/firefly-rk3399_defconfig
index 731222cdd0f3dc344c3ff559a59539bc0a9c63a4..b8d065414ac00201b149850ee93afd540aed5ca8 100644
--- a/configs/firefly-rk3399_defconfig
+++ b/configs/firefly-rk3399_defconfig
@@ -4,6 +4,7 @@ CONFIG_SPL_LIBCOMMON_SUPPORT=y
 CONFIG_SPL_LIBGENERIC_SUPPORT=y
 CONFIG_SYS_MALLOC_F_LEN=0x4000
 CONFIG_ROCKCHIP_RK3399=y
+CONFIG_ROCKCHIP_SPL_RESERVE_IRAM=0x4000
 CONFIG_SPL_STACK_R_ADDR=0x80000
 CONFIG_DEFAULT_DEVICE_TREE="rk3399-firefly"
 CONFIG_DEBUG_UART=y