+config SERIAL_AT91
+ bool "AT91RM9200 serial port support"
+ depends on ARM && ARCH_AT91RM9200
+ select SERIAL_CORE
+ help
+ This enables the driver for the on-chip UARTs of the AT91RM9200
+ processor.
+
+config SERIAL_AT91_CONSOLE
+ bool "Support for console on AT91RM9200 serial port"
+ depends on SERIAL_AT91=y
+ select SERIAL_CORE_CONSOLE
+ help
+ Say Y here if you wish to use a UART on the AT91RM9200 as the system
+ console (the system console is the device which receives all kernel
+ messages and warnings and which allows logins in single user mode).
+
+config SERIAL_AT91_TTYAT
+ bool "Install as device ttyAT0-4 instead of ttyS0-4"
+ depends on SERIAL_AT91=y
+ help
+ Say Y here if you wish to have the five internal AT91RM9200 UARTs
+ appear as /dev/ttyAT0-4 (major 204, minor 154-158) instead of the
+ normal /dev/ttyS0-4 (major 4, minor 64-68). This is necessary if
+ you also want other UARTs, such as external 8250/16C550 compatible
+ UARTs.
+ The ttySn nodes are legally reserved for the 8250 serial driver
+ but are often misused by other serial drivers.
+
+ To use this, you should create suitable ttyATn device nodes in
+ /dev/, and pass "console=ttyATn" to the kernel.
+
+ Say Y if you have an external 8250/16C550 UART. If unsure, say N.
+