arch/blackfin/include/asm/clocks.h

   1 /*
   2  * File:         include/asm-blackfin/mach-common/clocks.h
   3  * Based on:     include/asm-blackfin/mach-bf537/bf537.h
   4  * Author:       Robin Getz <rgetz@blackfin.uclinux.org>
   5  *
   6  * Created:      25Jul07
   7  * Description:  Common Clock definitions for various kernel files
   8  *
   9  * Modified:
  10  *               Copyright 2004-2007 Analog Devices Inc.
  11  *
  12  * Bugs:         Enter bugs at http://blackfin.uclinux.org/
  13  *
  14  * This program is free software; you can redistribute it and/or modify
  15  * it under the terms of the GNU General Public License as published by
  16  * the Free Software Foundation; either version 2 of the License, or
  17  * (at your option) any later version.
  18  *
  19  * This program is distributed in the hope that it will be useful,
  20  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  21  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  22  * GNU General Public License for more details.
  23  *
  24  * You should have received a copy of the GNU General Public License
  25  * along with this program; if not, see the file COPYING, or write
  26  * to the Free Software Foundation, Inc.,
  27  * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  28  */
  29
  30 #ifndef _BFIN_CLOCKS_H
  31 #define _BFIN_CLOCKS_H
  32
  33 #ifdef CONFIG_CCLK_DIV_1
  34 # define CONFIG_CCLK_ACT_DIV   CCLK_DIV1
  35 # define CONFIG_CCLK_DIV 1
  36 #endif
  37
  38 #ifdef CONFIG_CCLK_DIV_2
  39 # define CONFIG_CCLK_ACT_DIV   CCLK_DIV2
  40 # define CONFIG_CCLK_DIV 2
  41 #endif
  42
  43 #ifdef CONFIG_CCLK_DIV_4
  44 # define CONFIG_CCLK_ACT_DIV   CCLK_DIV4
  45 # define CONFIG_CCLK_DIV 4
  46 #endif
  47
  48 #ifdef CONFIG_CCLK_DIV_8
  49 # define CONFIG_CCLK_ACT_DIV   CCLK_DIV8
  50 # define CONFIG_CCLK_DIV 8
  51 #endif
  52
  53 #ifndef CONFIG_PLL_BYPASS
  54 # ifndef CONFIG_CLKIN_HALF
  55 #  define CONFIG_VCO_HZ   (CONFIG_CLKIN_HZ * CONFIG_VCO_MULT)
  56 # else
  57 #  define CONFIG_VCO_HZ   ((CONFIG_CLKIN_HZ * CONFIG_VCO_MULT)/2)
  58 # endif
  59
  60 # define CONFIG_CCLK_HZ  (CONFIG_VCO_HZ/CONFIG_CCLK_DIV)
  61 # define CONFIG_SCLK_HZ  (CONFIG_VCO_HZ/CONFIG_SCLK_DIV)
  62
  63 #else
  64 # define CONFIG_VCO_HZ   (CONFIG_CLKIN_HZ)
  65 # define CONFIG_CCLK_HZ  (CONFIG_CLKIN_HZ)
  66 # define CONFIG_SCLK_HZ  (CONFIG_CLKIN_HZ)
  67 # define CONFIG_VCO_MULT 0
  68 #endif
  69
  70 #endif