diff --git a/projects/Allwinner/linux/linux.aarch64.conf b/projects/Allwinner/linux/linux.aarch64.conf
index 09de4b0df1..1d21bc4632 100644
--- a/projects/Allwinner/linux/linux.aarch64.conf
+++ b/projects/Allwinner/linux/linux.aarch64.conf
@@ -2326,7 +2326,7 @@ CONFIG_LDISC_AUTOLOAD=y
 CONFIG_SERIAL_EARLYCON=y
 CONFIG_SERIAL_8250=y
 CONFIG_SERIAL_8250_DEPRECATED_OPTIONS=y
-# CONFIG_SERIAL_8250_16550A_VARIANTS is not set
+CONFIG_SERIAL_8250_16550A_VARIANTS=y
 # CONFIG_SERIAL_8250_FINTEK is not set
 CONFIG_SERIAL_8250_CONSOLE=y
 CONFIG_SERIAL_8250_DMA=y
diff --git a/projects/Allwinner/linux/linux.arm.conf b/projects/Allwinner/linux/linux.arm.conf
index cf9576534b..a8df716748 100644
--- a/projects/Allwinner/linux/linux.arm.conf
+++ b/projects/Allwinner/linux/linux.arm.conf
@@ -2099,7 +2099,7 @@ CONFIG_LDISC_AUTOLOAD=y
 CONFIG_SERIAL_EARLYCON=y
 CONFIG_SERIAL_8250=y
 CONFIG_SERIAL_8250_DEPRECATED_OPTIONS=y
-# CONFIG_SERIAL_8250_16550A_VARIANTS is not set
+CONFIG_SERIAL_8250_16550A_VARIANTS=y
 # CONFIG_SERIAL_8250_FINTEK is not set
 CONFIG_SERIAL_8250_CONSOLE=y
 CONFIG_SERIAL_8250_DMA=y