include/asm-i386/serial.h

   1 /*
   2  * include/asm-i386/serial.h
   3  */
   4
   5
   6 /*
   7  * This assumes you have a 1.8432 MHz clock for your UART.
   8  *
   9  * It'd be nice if someone built a serial card with a 24.576 MHz
  10  * clock, since the 16550A is capable of handling a top speed of 1.5
  11  * megabits/second; but this requires the faster clock.
  12  */
  13 #define BASE_BAUD ( 1843200 / 16 )
  14
  15 /* Standard COM flags (except for COM4, because of the 8514 problem) */
  16 #ifdef CONFIG_SERIAL_DETECT_IRQ
  17 #define STD_COM_FLAGS (ASYNC_BOOT_AUTOCONF | ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ)
  18 #define STD_COM4_FLAGS (ASYNC_BOOT_AUTOCONF | ASYNC_AUTO_IRQ)
  19 #else
  20 #define STD_COM_FLAGS (ASYNC_BOOT_AUTOCONF | ASYNC_SKIP_TEST)
  21 #define STD_COM4_FLAGS ASYNC_BOOT_AUTOCONF
  22 #endif
  23
  24 #define SERIAL_PORT_DFNS                        \
  25         /* UART CLK   PORT IRQ     FLAGS        */                      \
  26         { 0, BASE_BAUD, 0x3F8, 4, STD_COM_FLAGS },      /* ttyS0 */     \
  27         { 0, BASE_BAUD, 0x2F8, 3, STD_COM_FLAGS },      /* ttyS1 */     \
  28         { 0, BASE_BAUD, 0x3E8, 4, STD_COM_FLAGS },      /* ttyS2 */     \
  29         { 0, BASE_BAUD, 0x2E8, 3, STD_COM4_FLAGS },     /* ttyS3 */