diff --git a/configs/uniphier_ld11_defconfig b/configs/uniphier_ld11_defconfig
index 57b9c07..9b32d68 100644
--- a/configs/uniphier_ld11_defconfig
+++ b/configs/uniphier_ld11_defconfig
@@ -25,7 +25,6 @@ CONFIG_MISC=y
 CONFIG_I2C_EEPROM=y
 CONFIG_PINCTRL=y
 CONFIG_SPL_PINCTRL=y
-CONFIG_UNIPHIER_SERIAL=y
 CONFIG_USB=y
 CONFIG_DM_USB=y
 CONFIG_USB_EHCI_HCD=y
diff --git a/configs/uniphier_ld20_defconfig b/configs/uniphier_ld20_defconfig
index e6aa525..7623381 100644
--- a/configs/uniphier_ld20_defconfig
+++ b/configs/uniphier_ld20_defconfig
@@ -26,7 +26,6 @@ CONFIG_I2C_EEPROM=y
 CONFIG_MMC_UNIPHIER=y
 CONFIG_PINCTRL=y
 CONFIG_SPL_PINCTRL=y
-CONFIG_UNIPHIER_SERIAL=y
 CONFIG_USB=y
 CONFIG_USB_XHCI_HCD=y
 CONFIG_USB_STORAGE=y
diff --git a/configs/uniphier_ld4_sld8_defconfig b/configs/uniphier_ld4_sld8_defconfig
index 47b577a..f51e0da 100644
--- a/configs/uniphier_ld4_sld8_defconfig
+++ b/configs/uniphier_ld4_sld8_defconfig
@@ -31,7 +31,6 @@ CONFIG_NAND_DENALI_SPARE_AREA_SKIP_BYTES=8
 CONFIG_SPL_NAND_DENALI=y
 CONFIG_PINCTRL=y
 CONFIG_SPL_PINCTRL=y
-CONFIG_UNIPHIER_SERIAL=y
 CONFIG_USB=y
 CONFIG_DM_USB=y
 CONFIG_USB_EHCI_HCD=y
diff --git a/configs/uniphier_pro4_defconfig b/configs/uniphier_pro4_defconfig
index e156ec5..c47d02f 100644
--- a/configs/uniphier_pro4_defconfig
+++ b/configs/uniphier_pro4_defconfig
@@ -30,7 +30,6 @@ CONFIG_NAND_DENALI_SPARE_AREA_SKIP_BYTES=8
 CONFIG_SPL_NAND_DENALI=y
 CONFIG_PINCTRL=y
 CONFIG_SPL_PINCTRL=y
-CONFIG_UNIPHIER_SERIAL=y
 CONFIG_USB=y
 CONFIG_USB_XHCI_HCD=y
 CONFIG_USB_STORAGE=y
diff --git a/configs/uniphier_pxs2_ld6b_defconfig b/configs/uniphier_pxs2_ld6b_defconfig
index f943516..9eebad1 100644
--- a/configs/uniphier_pxs2_ld6b_defconfig
+++ b/configs/uniphier_pxs2_ld6b_defconfig
@@ -31,7 +31,6 @@ CONFIG_NAND_DENALI_SPARE_AREA_SKIP_BYTES=8
 CONFIG_SPL_NAND_DENALI=y
 CONFIG_PINCTRL=y
 CONFIG_SPL_PINCTRL=y
-CONFIG_UNIPHIER_SERIAL=y
 CONFIG_USB=y
 CONFIG_USB_XHCI_HCD=y
 CONFIG_USB_STORAGE=y
diff --git a/configs/uniphier_sld3_defconfig b/configs/uniphier_sld3_defconfig
index 4cbd01c..6f31dd4 100644
--- a/configs/uniphier_sld3_defconfig
+++ b/configs/uniphier_sld3_defconfig
@@ -29,7 +29,6 @@ CONFIG_NAND_DENALI=y
 CONFIG_SYS_NAND_DENALI_64BIT=y
 CONFIG_NAND_DENALI_SPARE_AREA_SKIP_BYTES=8
 CONFIG_SPL_NAND_DENALI=y
-CONFIG_UNIPHIER_SERIAL=y
 CONFIG_USB=y
 CONFIG_DM_USB=y
 CONFIG_USB_EHCI_HCD=y
diff --git a/drivers/serial/Kconfig b/drivers/serial/Kconfig
index 9ff7234..ab5df70 100644
--- a/drivers/serial/Kconfig
+++ b/drivers/serial/Kconfig
@@ -344,6 +344,7 @@ config SANDBOX_SERIAL
 config UNIPHIER_SERIAL
 	bool "Support for UniPhier on-chip UART"
 	depends on ARCH_UNIPHIER
+	default y
 	help
 	  If you have a UniPhier based board and want to use the on-chip
 	  serial ports, say Y to this option. If unsure, say N.