arch/mips/lantiq/xway/clk-ase.c

   1 /*
   2  *  This program is free software; you can redistribute it and/or modify it
   3  *  under the terms of the GNU General Public License version 2 as published
   4  *  by the Free Software Foundation.
   5  *
   6  *  Copyright (C) 2011 John Crispin <blogic@openwrt.org>
   7  */
   8
   9 #include <linux/io.h>
  10 #include <linux/export.h>
  11 #include <linux/init.h>
  12 #include <linux/clk.h>
  13
  14 #include <asm/time.h>
  15 #include <asm/irq.h>
  16 #include <asm/div64.h>
  17
  18 #include <lantiq_soc.h>
  19
  20 /* cgu registers */
  21 #define LTQ_CGU_SYS     0x0010
  22
  23 unsigned int ltq_get_io_region_clock(void)
  24 {
  25         return CLOCK_133M;
  26 }
  27 EXPORT_SYMBOL(ltq_get_io_region_clock);
  28
  29 unsigned int ltq_get_fpi_bus_clock(int fpi)
  30 {
  31         return CLOCK_133M;
  32 }
  33 EXPORT_SYMBOL(ltq_get_fpi_bus_clock);
  34
  35 unsigned int ltq_get_cpu_hz(void)
  36 {
  37         if (ltq_cgu_r32(LTQ_CGU_SYS) & (1 << 5))
  38                 return CLOCK_266M;
  39         else
  40                 return CLOCK_133M;
  41 }
  42 EXPORT_SYMBOL(ltq_get_cpu_hz);
  43
  44 unsigned int ltq_get_fpi_hz(void)
  45 {
  46         return CLOCK_133M;
  47 }
  48 EXPORT_SYMBOL(ltq_get_fpi_hz);