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kernel/linux-rt-4.4.41/arch/openrisc/include/asm/serial.h 1.08 KB
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  /*
   * OpenRISC Linux
   *
   * Linux architectural port borrowing liberally from similar works of
   * others.  All original copyrights apply as per the original source
   * declaration.
   *
   * OpenRISC implementation:
   * Copyright (C) 2003 Matjaz Breskvar <phoenix@bsemi.com>
   * Copyright (C) 2010-2011 Jonas Bonn <jonas@southpole.se>
   * et al.
   *
   * This program is free software; you can redistribute it and/or modify
   * it under the terms of the GNU General Public License as published by
   * the Free Software Foundation; either version 2 of the License, or
   * (at your option) any later version.
   */
  
  #ifndef __ASM_OPENRISC_SERIAL_H
  #define __ASM_OPENRISC_SERIAL_H
  
  #ifdef __KERNEL__
  
  #include <asm/cpuinfo.h>
  
  /* There's a generic version of this file, but it assumes a 1.8MHz UART clk...
   * this, on the other hand, assumes the UART clock is tied to the system
   * clock... 8250_early.c (early 8250 serial console) actually uses this, so
   * it needs to be correct to get the early console working.
   */
  
  #define BASE_BAUD (cpuinfo.clock_frequency/16)
  
  #endif /* __KERNEL__ */
  
  #endif /* __ASM_OPENRISC_SERIAL_H */