arch/openrisc/include/asm/serial.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /*
   3  * OpenRISC Linux
   4  *
   5  * Linux architectural port borrowing liberally from similar works of
   6  * others.  All original copyrights apply as per the original source
   7  * declaration.
   8  *
   9  * OpenRISC implementation:
  10  * Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com>
  11  * Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
  12  * et al.
  13  */
  14
  15 #ifndef __ASM_OPENRISC_SERIAL_H
  16 #define __ASM_OPENRISC_SERIAL_H
  17
  18 #ifdef __KERNEL__
  19
  20 #include <asm/cpuinfo.h>
  21
  22 /* There's a generic version of this file, but it assumes a 1.8MHz UART clk...
  23  * this, on the other hand, assumes the UART clock is tied to the system
  24  * clock... 8250_early.c (early 8250 serial console) actually uses this, so
  25  * it needs to be correct to get the early console working.
  26  */
  27
  28 #define BASE_BAUD (cpuinfo_or1k[smp_processor_id()].clock_frequency/16)
  29
  30 #endif /* __KERNEL__ */
  31
  32 #endif /* __ASM_OPENRISC_SERIAL_H */