usart 1819 drivers/tty/serial/atmel_serial.c u32 usart, dbgu_uart, new_uart; usart 1821 drivers/tty/serial/atmel_serial.c usart = 0x55534152; /* USAR(T) */ usart 1838 drivers/tty/serial/atmel_serial.c } else if (name == usart) {