arch/blackfin/include/asm/clocks.h

   1 /*
   2  * Common Clock definitions for various kernel files
   3  *
   4  * Copyright 2007-2008 Analog Devices Inc.
   5  *
   6  * Licensed under the GPL-2 or later.
   7  */
   8
   9 #ifndef _BFIN_CLOCKS_H
  10 #define _BFIN_CLOCKS_H
  11
  12 #ifdef CONFIG_CCLK_DIV_1
  13 # define CONFIG_CCLK_ACT_DIV   CCLK_DIV1
  14 # define CONFIG_CCLK_DIV 1
  15 #endif
  16
  17 #ifdef CONFIG_CCLK_DIV_2
  18 # define CONFIG_CCLK_ACT_DIV   CCLK_DIV2
  19 # define CONFIG_CCLK_DIV 2
  20 #endif
  21
  22 #ifdef CONFIG_CCLK_DIV_4
  23 # define CONFIG_CCLK_ACT_DIV   CCLK_DIV4
  24 # define CONFIG_CCLK_DIV 4
  25 #endif
  26
  27 #ifdef CONFIG_CCLK_DIV_8
  28 # define CONFIG_CCLK_ACT_DIV   CCLK_DIV8
  29 # define CONFIG_CCLK_DIV 8
  30 #endif
  31
  32 #ifndef CONFIG_PLL_BYPASS
  33 # ifndef CONFIG_CLKIN_HALF
  34 #  define CONFIG_VCO_HZ   (CONFIG_CLKIN_HZ * CONFIG_VCO_MULT)
  35 # else
  36 #  define CONFIG_VCO_HZ   ((CONFIG_CLKIN_HZ * CONFIG_VCO_MULT)/2)
  37 # endif
  38
  39 # define CONFIG_CCLK_HZ  (CONFIG_VCO_HZ/CONFIG_CCLK_DIV)
  40 # define CONFIG_SCLK_HZ  (CONFIG_VCO_HZ/CONFIG_SCLK_DIV)
  41
  42 #else
  43 # define CONFIG_VCO_HZ   (CONFIG_CLKIN_HZ)
  44 # define CONFIG_CCLK_HZ  (CONFIG_CLKIN_HZ)
  45 # define CONFIG_SCLK_HZ  (CONFIG_CLKIN_HZ)
  46 # define CONFIG_VCO_MULT 0
  47 #endif
  48
  49 #endif