arch/m68k/include/asm/serial.h

   1 /*
   2  * include/asm-m68k/serial.h
   3  *
   4  * currently this seems useful only for a Q40,
   5  * it's an almost exact copy of ../asm-alpha/serial.h
   6  *
   7  */
   8
   9
  10 /*
  11  * This assumes you have a 1.8432 MHz clock for your UART.
  12  *
  13  * It'd be nice if someone built a serial card with a 24.576 MHz
  14  * clock, since the 16550A is capable of handling a top speed of 1.5
  15  * megabits/second; but this requires the faster clock.
  16  */
  17 #define BASE_BAUD ( 1843200 / 16 )
  18
  19 /* Standard COM flags (except for COM4, because of the 8514 problem) */
  20 #ifdef CONFIG_SERIAL_8250_DETECT_IRQ
  21 #define STD_COM_FLAGS (UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_AUTO_IRQ)
  22 #define STD_COM4_FLAGS (UPF_BOOT_AUTOCONF | UPF_AUTO_IRQ)
  23 #else
  24 #define STD_COM_FLAGS (UPF_BOOT_AUTOCONF | UPF_SKIP_TEST)
  25 #define STD_COM4_FLAGS UPF_BOOT_AUTOCONF
  26 #endif
  27
  28 #ifdef CONFIG_ISA
  29 #define SERIAL_PORT_DFNS                        \
  30         /* UART CLK   PORT IRQ     FLAGS        */                      \
  31         { 0, BASE_BAUD, 0x3F8, 4, STD_COM_FLAGS },      /* ttyS0 */     \
  32         { 0, BASE_BAUD, 0x2F8, 3, STD_COM_FLAGS },      /* ttyS1 */     \
  33         { 0, BASE_BAUD, 0x3E8, 4, STD_COM_FLAGS },      /* ttyS2 */     \
  34         { 0, BASE_BAUD, 0x2E8, 3, STD_COM4_FLAGS },     /* ttyS3 */
  35 #endif