diff --git a/arch/arm/dts/rk3399-nanopi-r4s-u-boot.dtsi b/arch/arm/dts/rk3399-nanopi-r4s-u-boot.dtsi
index 69800cc368..a3054849f8 100644
--- a/arch/arm/dts/rk3399-nanopi-r4s-u-boot.dtsi
+++ b/arch/arm/dts/rk3399-nanopi-r4s-u-boot.dtsi
@@ -13,7 +13,7 @@
  */
 
 #include "rk3399-nanopi4-u-boot.dtsi"
-#include "rk3399-sdram-lpddr4-100.dtsi"
+#include "rk3399-sdram-ddr3-1866.dtsi"
 
 / {
 	smbios {
diff --git a/configs/nanopi-r4s-rk3399_defconfig b/configs/nanopi-r4s-rk3399_defconfig
index 4f4363cb0f..bfa7ee628d 100644
--- a/configs/nanopi-r4s-rk3399_defconfig
+++ b/configs/nanopi-r4s-rk3399_defconfig
@@ -54,7 +54,6 @@ CONFIG_PMIC_RK8XX=y
 CONFIG_REGULATOR_PWM=y
 CONFIG_REGULATOR_RK8XX=y
 CONFIG_PWM_ROCKCHIP=y
-CONFIG_RAM_ROCKCHIP_LPDDR4=y
 CONFIG_BAUDRATE=1500000
 CONFIG_DEBUG_UART_SHIFT=2
 CONFIG_SYS_NS16550_MEM32=y