1/*
2 * include/asm-ppc/pc_serial.h
3 *
4 * This is basically a copy of include/asm-i386/serial.h.
5 * It is used on platforms which have an ISA bus and thus are likely
6 * to have PC-style serial ports at the legacy I/O port addresses.
7 * It also includes the definitions for the fourport, accent, boca
8 * and hub6 multiport serial cards, although I have never heard of
9 * anyone using any of those on a PPC platform.  -- paulus
10 */
11
12
13/*
14 * This assumes you have a 1.8432 MHz clock for your UART.
15 *
16 * It'd be nice if someone built a serial card with a 24.576 MHz
17 * clock, since the 16550A is capable of handling a top speed of 1.5
18 * megabits/second; but this requires the faster clock.
19 */
20#define BASE_BAUD ( 1843200 / 16 )
21
22#ifdef CONFIG_SERIAL_MANY_PORTS
23#define RS_TABLE_SIZE  64
24#else
25#define RS_TABLE_SIZE  4
26#endif
27
28/* Standard COM flags (except for COM4, because of the 8514 problem) */
29#ifdef CONFIG_SERIAL_DETECT_IRQ
30#define STD_COM_FLAGS (ASYNC_BOOT_AUTOCONF | ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ)
31#define STD_COM4_FLAGS (ASYNC_BOOT_AUTOCONF | ASYNC_AUTO_IRQ)
32#else
33#define STD_COM_FLAGS (ASYNC_BOOT_AUTOCONF | ASYNC_SKIP_TEST)
34#define STD_COM4_FLAGS ASYNC_BOOT_AUTOCONF
35#endif
36
37#define SERIAL_PORT_DFNS			\
38	/* UART CLK   PORT IRQ     FLAGS        */			\
39	{ 0, BASE_BAUD, 0x3F8, 4, STD_COM_FLAGS },	/* ttyS0 */	\
40	{ 0, BASE_BAUD, 0x2F8, 3, STD_COM_FLAGS },	/* ttyS1 */	\
41	{ 0, BASE_BAUD, 0x3E8, 4, STD_COM_FLAGS },	/* ttyS2 */	\
42	{ 0, BASE_BAUD, 0x2E8, 3, STD_COM4_FLAGS },	/* ttyS3 */
43