# Serial Port Driver menuconfig MTK_SERIAL tristate "MediaTek Serial Port Support" select SERIAL_CORE default n ---help--- This selects MediaTek(R) internal UART driver. If you want to use MediaTek(R) internal UART driver, say Y or M here. If unsure, say N. config MTK_SERIAL_CONSOLE bool "MediaTek Console on Serial Port Support" depends on MTK_SERIAL=y select SERIAL_CORE_CONSOLE default y ---help--- Say Y here if you wish to use MT6516 internal UART as the system console. You should alter the default console setting by kernel command line option "console=ttyMT0" or "console=ttyMT1". config MTK_SERIAL_MODEM_TEST bool "Support modem test" depends on MTK_SERIAL=y default n ---help--- Say Y here is you want to enable modem test. After enabling this option, UART4 will be switched to modem side. Hence, the command line parameter should be also modified. This is for test purpose only.