target/linux/ifxmips/files-2.6.33/arch/mips/include/asm/mach-ifxmips/ifxmips_cgu.h

   1 /*
   2  *   This program is free software; you can redistribute it and/or modify
   3  *   it under the terms of the GNU General Public License as published by
   4  *   the Free Software Foundation; either version 2 of the License, or
   5  *   (at your option) any later version.
   6  *
   7  *   This program is distributed in the hope that it will be useful,
   8  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
   9  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  10  *   GNU General Public License for more details.
  11  *
  12  *   You should have received a copy of the GNU General Public License
  13  *   along with this program; if not, write to the Free Software
  14  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
  15  *
  16  *   Copyright (C) 2007 John Crispin <blogic@openwrt.org>
  17  */
  18
  19 #ifndef _IFXMIPS_CGU_H__
  20 #define _IFXMIPS_CGU_H__
  21
  22 #define BASIC_INPUT_CLOCK_FREQUENCY_1   35328000
  23 #define BASIC_INPUT_CLOCK_FREQUENCY_2   36000000
  24
  25 #define BASIS_INPUT_CRYSTAL_USB         12000000
  26
  27 #define GET_BITS(x, msb, lsb)           (((x) & ((1 << ((msb) + 1)) - 1)) >> (lsb))
  28
  29 #define CGU_PLL0_PHASE_DIVIDER_ENABLE   (ifxmips_r32(IFXMIPS_CGU_PLL0_CFG) & (1 << 31))
  30 #define CGU_PLL0_BYPASS                 (ifxmips_r32(IFXMIPS_CGU_PLL0_CFG) & (1 << 30))
  31 #define CGU_PLL0_CFG_DSMSEL             (ifxmips_r32(IFXMIPS_CGU_PLL0_CFG) & (1 << 28))
  32 #define CGU_PLL0_CFG_FRAC_EN            (ifxmips_r32(IFXMIPS_CGU_PLL0_CFG) & (1 << 27))
  33 #define CGU_PLL1_SRC                    (ifxmips_r32(IFXMIPS_CGU_PLL1_CFG) & (1 << 31))
  34 #define CGU_PLL1_BYPASS                 (ifxmips_r32(IFXMIPS_CGU_PLL1_CFG) & (1 << 30))
  35 #define CGU_PLL1_CFG_DSMSEL             (ifxmips_r32(IFXMIPS_CGU_PLL1_CFG) & (1 << 28))
  36 #define CGU_PLL1_CFG_FRAC_EN            (ifxmips_r32(IFXMIPS_CGU_PLL1_CFG) & (1 << 27))
  37 #define CGU_PLL2_PHASE_DIVIDER_ENABLE   (ifxmips_r32(IFXMIPS_CGU_PLL2_CFG) & (1 << 20))
  38 #define CGU_PLL2_BYPASS                 (ifxmips_r32(IFXMIPS_CGU_PLL2_CFG) & (1 << 19))
  39 #define CGU_SYS_FPI_SEL                 (1 << 6)
  40 #define CGU_SYS_DDR_SEL                 0x3
  41 #define CGU_PLL0_SRC                    (1 << 29)
  42
  43 #define CGU_PLL0_CFG_PLLK               GET_BITS(*IFXMIPS_CGU_PLL0_CFG, 26, 17)
  44 #define CGU_PLL0_CFG_PLLN               GET_BITS(*IFXMIPS_CGU_PLL0_CFG, 12, 6)
  45 #define CGU_PLL0_CFG_PLLM               GET_BITS(*IFXMIPS_CGU_PLL0_CFG, 5, 2)
  46 #define CGU_PLL1_CFG_PLLK               GET_BITS(*IFXMIPS_CGU_PLL1_CFG, 26, 17)
  47 #define CGU_PLL1_CFG_PLLN               GET_BITS(*IFXMIPS_CGU_PLL1_CFG, 12, 6)
  48 #define CGU_PLL1_CFG_PLLM               GET_BITS(*IFXMIPS_CGU_PLL1_CFG, 5, 2)
  49 #define CGU_PLL2_SRC                    GET_BITS(*IFXMIPS_CGU_PLL2_CFG, 18, 17)
  50 #define CGU_PLL2_CFG_INPUT_DIV          GET_BITS(*IFXMIPS_CGU_PLL2_CFG, 16, 13)
  51 #define CGU_PLL2_CFG_PLLN               GET_BITS(*IFXMIPS_CGU_PLL2_CFG, 12, 6)
  52 #define CGU_PLL2_CFG_PLLM               GET_BITS(*IFXMIPS_CGU_PLL2_CFG, 5, 2)
  53 #define CGU_IF_CLK_PCI_CLK              GET_BITS(*IFXMIPS_CGU_IF_CLK, 23, 20)
  54
  55
  56 unsigned int cgu_get_mips_clock(int cpu);
  57 unsigned int cgu_get_io_region_clock(void);
  58 unsigned int cgu_get_fpi_bus_clock(int fpi);
  59 void cgu_setup_pci_clk(int internal_clock);
  60 unsigned int ifxmips_get_ddr_hz(void);
  61 unsigned int ifxmips_get_fpi_hz(void);
  62 unsigned int ifxmips_get_cpu_hz(void);
  63
  64 #endif