diff --git a/arch/arm64/configs/rockchip_defconfig b/arch/arm64/configs/rockchip_defconfig
index 1aff21756d3d..dfbe4223a8b3 100644
--- a/arch/arm64/configs/rockchip_defconfig
+++ b/arch/arm64/configs/rockchip_defconfig
@@ -388,6 +388,8 @@ CONFIG_INPUT_GPIO=y
 CONFIG_SERIAL_8250=y
 # CONFIG_SERIAL_8250_DEPRECATED_OPTIONS is not set
 CONFIG_SERIAL_8250_CONSOLE=y
+CONFIG_SERIAL_8250_NR_UARTS=5
+CONFIG_SERIAL_8250_RUNTIME_UARTS=5
 # CONFIG_SERIAL_8250_PCI is not set
 CONFIG_SERIAL_8250_DW=y
 # CONFIG_HW_RANDOM is not set