diff --git a/arch/arm/configs/rk3308_linux_aarch32_defconfig b/arch/arm/configs/rk3308_linux_aarch32_defconfig
index 87b36e4a77b9..c149cf09562d 100644
--- a/arch/arm/configs/rk3308_linux_aarch32_defconfig
+++ b/arch/arm/configs/rk3308_linux_aarch32_defconfig
@@ -110,7 +110,8 @@ CONFIG_SERIAL_8250_CONSOLE=y
 CONFIG_SERIAL_8250_NR_UARTS=5
 CONFIG_SERIAL_8250_RUNTIME_UARTS=5
 CONFIG_SERIAL_8250_DW=y
-# CONFIG_HW_RANDOM is not set
+CONFIG_HW_RANDOM=y
+CONFIG_HW_RANDOM_ROCKCHIP=y
 CONFIG_I2C=y
 CONFIG_I2C_CHARDEV=y
 CONFIG_I2C_MUX=y