diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig
index 5376d90..66b6cac 100644
--- a/arch/arm64/configs/defconfig
+++ b/arch/arm64/configs/defconfig
@@ -45,6 +45,8 @@
 CONFIG_CMDLINE="console=ttyAMA0"
 # CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set
 CONFIG_COMPAT=y
+CONFIG_CPU_IDLE=y
+CONFIG_ARM64_CPUIDLE=y
 CONFIG_NET=y
 CONFIG_PACKET=y
 CONFIG_UNIX=y