/* * include/asm-ppc/pc_serial.h * * This is basically a copy of include/asm-i386/serial.h. * It is used on platforms which have an ISA bus and thus are likely * to have PC-style serial ports at the legacy I/O port addresses. * It also includes the definitions for the fourport, accent, boca * and hub6 multiport serial cards, although I have never heard of * anyone using any of those on a PPC platform.  -- paulus */  /* * This assumes you have a 1.8432 MHz clock for your UART. * * It'd be nice if someone built a serial card with a 24.576 MHz * clock, since the 16550A is capable of handling a top speed of 1.5 * megabits/second; but this requires the faster clock. */#define BASE_BAUD ( 1843200 / 16 ) #ifdef CONFIG_SERIAL_MANY_PORTS#define RS_TABLE_SIZE  64#else#define RS_TABLE_SIZE  4#endif /* Standard COM flags (except for COM4, because of the 8514 problem) */#ifdef CONFIG_SERIAL_DETECT_IRQ#define STD_COM_FLAGS (ASYNC_BOOT_AUTOCONF | ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ)#define STD_COM4_FLAGS (ASYNC_BOOT_AUTOCONF | ASYNC_AUTO_IRQ)#else#define STD_COM_FLAGS (ASYNC_BOOT_AUTOCONF | ASYNC_SKIP_TEST)#define STD_COM4_FLAGS ASYNC_BOOT_AUTOCONF#endif #define SERIAL_PORT_DFNS			\	/* UART CLK   PORT IRQ     FLAGS        */			\	{ 0, BASE_BAUD, 0x3F8, 4, STD_COM_FLAGS },	/* ttyS0 */	\	{ 0, BASE_BAUD, 0x2F8, 3, STD_COM_FLAGS },	/* ttyS1 */	\	{ 0, BASE_BAUD, 0x3E8, 4, STD_COM_FLAGS },	/* ttyS2 */	\	{ 0, BASE_BAUD, 0x2E8, 3, STD_COM4_FLAGS },	/* ttyS3 */