diff --git a/arch/mips/configs/ci20_defconfig b/arch/mips/configs/ci20_defconfig
index ec38c24aaaf53036b604cd3df8b4b7c725f661d7..5ea3104a3aca9891a10be74c5c6757a192febf71 100644
--- a/arch/mips/configs/ci20_defconfig
+++ b/arch/mips/configs/ci20_defconfig
@@ -100,6 +100,8 @@ CONFIG_REGULATOR_FIXED_VOLTAGE=y
 # CONFIG_HID is not set
 # CONFIG_USB_SUPPORT is not set
 CONFIG_MMC=y
+CONFIG_RTC_CLASS=y
+CONFIG_RTC_DRV_JZ4740=y
 # CONFIG_IOMMU_SUPPORT is not set
 CONFIG_MEMORY=y
 # CONFIG_DNOTIFY is not set