diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 6b072be246..fde85dc0d5 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -1076,6 +1076,7 @@ config ARCH_RMOBILE
 	select DM
 	select DM_SERIAL
 	select GPIO_EXTRA_HEADER
+	select LTO
 	imply BOARD_EARLY_INIT_F
 	imply CMD_DM
 	imply FAT_WRITE