arch/mips/include/asm/mach-loongson32/regs-clk.h

   1 /*
   2  * Copyright (c) 2011 Zhang, Keguang <keguang.zhang@gmail.com>
   3  *
   4  * Loongson 1 Clock Register Definitions.
   5  *
   6  * This program is free software; you can redistribute  it and/or modify it
   7  * under  the terms of  the GNU General  Public License as published by the
   8  * Free Software Foundation;  either version 2 of the  License, or (at your
   9  * option) any later version.
  10  */
  11
  12 #ifndef __ASM_MACH_LOONGSON32_REGS_CLK_H
  13 #define __ASM_MACH_LOONGSON32_REGS_CLK_H
  14
  15 #define LS1X_CLK_REG(x) \
  16                 ((void __iomem *)KSEG1ADDR(LS1X_CLK_BASE + (x)))
  17
  18 #define LS1X_CLK_PLL_FREQ               LS1X_CLK_REG(0x0)
  19 #define LS1X_CLK_PLL_DIV                LS1X_CLK_REG(0x4)
  20
  21 #if defined(CONFIG_LOONGSON1_LS1B)
  22 /* Clock PLL Divisor Register Bits */
  23 #define DIV_DC_EN                       BIT(31)
  24 #define DIV_DC_RST                      BIT(30)
  25 #define DIV_CPU_EN                      BIT(25)
  26 #define DIV_CPU_RST                     BIT(24)
  27 #define DIV_DDR_EN                      BIT(19)
  28 #define DIV_DDR_RST                     BIT(18)
  29 #define RST_DC_EN                       BIT(5)
  30 #define RST_DC                          BIT(4)
  31 #define RST_DDR_EN                      BIT(3)
  32 #define RST_DDR                         BIT(2)
  33 #define RST_CPU_EN                      BIT(1)
  34 #define RST_CPU                         BIT(0)
  35
  36 #define DIV_DC_SHIFT                    26
  37 #define DIV_CPU_SHIFT                   20
  38 #define DIV_DDR_SHIFT                   14
  39
  40 #define DIV_DC_WIDTH                    4
  41 #define DIV_CPU_WIDTH                   4
  42 #define DIV_DDR_WIDTH                   4
  43
  44 #define BYPASS_DC_SHIFT                 12
  45 #define BYPASS_DDR_SHIFT                10
  46 #define BYPASS_CPU_SHIFT                8
  47
  48 #define BYPASS_DC_WIDTH                 1
  49 #define BYPASS_DDR_WIDTH                1
  50 #define BYPASS_CPU_WIDTH                1
  51
  52 #elif defined(CONFIG_LOONGSON1_LS1C)
  53 /* PLL/SDRAM Frequency configuration register Bits */
  54 #define PLL_VALID                       BIT(31)
  55 #define FRAC_N                          GENMASK(23, 16)
  56 #define RST_TIME                        GENMASK(3, 2)
  57 #define SDRAM_DIV                       GENMASK(1, 0)
  58
  59 /* CPU/CAMERA/DC Frequency configuration register Bits */
  60 #define DIV_DC_EN                       BIT(31)
  61 #define DIV_DC                          GENMASK(30, 24)
  62 #define DIV_CAM_EN                      BIT(23)
  63 #define DIV_CAM                         GENMASK(22, 16)
  64 #define DIV_CPU_EN                      BIT(15)
  65 #define DIV_CPU                         GENMASK(14, 8)
  66 #define DIV_DC_SEL_EN                   BIT(5)
  67 #define DIV_DC_SEL                      BIT(4)
  68 #define DIV_CAM_SEL_EN                  BIT(3)
  69 #define DIV_CAM_SEL                     BIT(2)
  70 #define DIV_CPU_SEL_EN                  BIT(1)
  71 #define DIV_CPU_SEL                     BIT(0)
  72
  73 #define DIV_DC_SHIFT                    24
  74 #define DIV_CAM_SHIFT                   16
  75 #define DIV_CPU_SHIFT                   8
  76 #define DIV_DDR_SHIFT                   0
  77
  78 #define DIV_DC_WIDTH                    7
  79 #define DIV_CAM_WIDTH                   7
  80 #define DIV_CPU_WIDTH                   7
  81 #define DIV_DDR_WIDTH                   2
  82
  83 #endif
  84
  85 #endif /* __ASM_MACH_LOONGSON32_REGS_CLK_H */