arch/arm/mach-at91/include/mach/at91cap9_ddrsdr.h

   1 /*
   2  * arch/arm/mach-at91/include/mach/at91cap9_ddrsdr.h
   3  *
   4  *  (C) 2008 Andrew Victor
   5  *
   6  * DDR/SDR Controller (DDRSDRC) - System peripherals registers.
   7  * Based on AT91CAP9 datasheet revision B.
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  */
  14
  15 #ifndef AT91CAP9_DDRSDR_H
  16 #define AT91CAP9_DDRSDR_H
  17
  18 #define AT91_DDRSDRC_MR         0x00    /* Mode Register */
  19 #define         AT91_DDRSDRC_MODE       (0xf << 0)              /* Command Mode */
  20 #define                 AT91_DDRSDRC_MODE_NORMAL                0
  21 #define                 AT91_DDRSDRC_MODE_NOP           1
  22 #define                 AT91_DDRSDRC_MODE_PRECHARGE     2
  23 #define                 AT91_DDRSDRC_MODE_LMR           3
  24 #define                 AT91_DDRSDRC_MODE_REFRESH       4
  25 #define                 AT91_DDRSDRC_MODE_EXT_LMR       5
  26 #define                 AT91_DDRSDRC_MODE_DEEP          6
  27
  28 #define AT91_DDRSDRC_RTR        0x04    /* Refresh Timer Register */
  29 #define         AT91_DDRSDRC_COUNT      (0xfff << 0)            /* Refresh Timer Counter */
  30
  31 #define AT91_DDRSDRC_CR         0x08    /* Configuration Register */
  32 #define         AT91_DDRSDRC_NC         (3 << 0)                /* Number of Column Bits */
  33 #define                 AT91_DDRSDRC_NC_SDR8    (0 << 0)
  34 #define                 AT91_DDRSDRC_NC_SDR9    (1 << 0)
  35 #define                 AT91_DDRSDRC_NC_SDR10   (2 << 0)
  36 #define                 AT91_DDRSDRC_NC_SDR11   (3 << 0)
  37 #define                 AT91_DDRSDRC_NC_DDR9    (0 << 0)
  38 #define                 AT91_DDRSDRC_NC_DDR10   (1 << 0)
  39 #define                 AT91_DDRSDRC_NC_DDR11   (2 << 0)
  40 #define                 AT91_DDRSDRC_NC_DDR12   (3 << 0)
  41 #define         AT91_DDRSDRC_NR         (3 << 2)                /* Number of Row Bits */
  42 #define                 AT91_DDRSDRC_NR_11      (0 << 2)
  43 #define                 AT91_DDRSDRC_NR_12      (1 << 2)
  44 #define                 AT91_DDRSDRC_NR_13      (2 << 2)
  45 #define         AT91_DDRSDRC_CAS        (7 << 4)                /* CAS Latency */
  46 #define                 AT91_DDRSDRC_CAS_2      (2 << 4)
  47 #define                 AT91_DDRSDRC_CAS_3      (3 << 4)
  48 #define                 AT91_DDRSDRC_CAS_25     (6 << 4)
  49 #define         AT91_DDRSDRC_DLL        (1 << 7)                /* Reset DLL */
  50 #define         AT91_DDRSDRC_DICDS      (1 << 8)                /* Output impedance control */
  51
  52 #define AT91_DDRSDRC_T0PR       0x0C    /* Timing 0 Register */
  53 #define         AT91_DDRSDRC_TRAS       (0xf <<  0)             /* Active to Precharge delay */
  54 #define         AT91_DDRSDRC_TRCD       (0xf <<  4)             /* Row to Column delay */
  55 #define         AT91_DDRSDRC_TWR        (0xf <<  8)             /* Write recovery delay */
  56 #define         AT91_DDRSDRC_TRC        (0xf << 12)             /* Row cycle delay */
  57 #define         AT91_DDRSDRC_TRP        (0xf << 16)             /* Row precharge delay */
  58 #define         AT91_DDRSDRC_TRRD       (0xf << 20)             /* Active BankA to BankB */
  59 #define         AT91_DDRSDRC_TWTR       (1   << 24)             /* Internal Write to Read delay */
  60 #define         AT91_DDRSDRC_TMRD       (0xf << 28)             /* Load mode to active/refresh delay */
  61
  62 #define AT91_DDRSDRC_T1PR       0x10    /* Timing 1 Register */
  63 #define         AT91_DDRSDRC_TRFC       (0x1f << 0)             /* Row Cycle Delay */
  64 #define         AT91_DDRSDRC_TXSNR      (0xff << 8)             /* Exit self-refresh to non-read */
  65 #define         AT91_DDRSDRC_TXSRD      (0xff << 16)            /* Exit self-refresh to read */
  66 #define         AT91_DDRSDRC_TXP        (0xf  << 24)            /* Exit power-down delay */
  67
  68 #define AT91_DDRSDRC_LPR        0x18    /* Low Power Register */
  69 #define         AT91_DDRSDRC_LPCB               (3 << 0)        /* Low-power Configurations */
  70 #define                 AT91_DDRSDRC_LPCB_DISABLE               0
  71 #define                 AT91_DDRSDRC_LPCB_SELF_REFRESH          1
  72 #define                 AT91_DDRSDRC_LPCB_POWER_DOWN            2
  73 #define                 AT91_DDRSDRC_LPCB_DEEP_POWER_DOWN       3
  74 #define         AT91_DDRSDRC_CLKFR              (1 << 2)        /* Clock Frozen */
  75 #define         AT91_DDRSDRC_PASR               (7 << 4)        /* Partial Array Self Refresh */
  76 #define         AT91_DDRSDRC_TCSR               (3 << 8)        /* Temperature Compensated Self Refresh */
  77 #define         AT91_DDRSDRC_DS                 (3 << 10)       /* Drive Strength */
  78 #define         AT91_DDRSDRC_TIMEOUT            (3 << 12)       /* Time to define when Low Power Mode is enabled */
  79 #define                 AT91_DDRSDRC_TIMEOUT_0_CLK_CYCLES       (0 << 12)
  80 #define                 AT91_DDRSDRC_TIMEOUT_64_CLK_CYCLES      (1 << 12)
  81 #define                 AT91_DDRSDRC_TIMEOUT_128_CLK_CYCLES     (2 << 12)
  82
  83 #define AT91_DDRSDRC_MDR        0x1C    /* Memory Device Register */
  84 #define         AT91_DDRSDRC_MD         (3 << 0)                /* Memory Device Type */
  85 #define                 AT91_DDRSDRC_MD_SDR             0
  86 #define                 AT91_DDRSDRC_MD_LOW_POWER_SDR   1
  87 #define                 AT91_DDRSDRC_MD_DDR             2
  88 #define                 AT91_DDRSDRC_MD_LOW_POWER_DDR   3
  89
  90 #define AT91_DDRSDRC_DLLR       0x20    /* DLL Information Register */
  91 #define         AT91_DDRSDRC_MDINC      (1 << 0)                /* Master Delay increment */
  92 #define         AT91_DDRSDRC_MDDEC      (1 << 1)                /* Master Delay decrement */
  93 #define         AT91_DDRSDRC_MDOVF      (1 << 2)                /* Master Delay Overflow */
  94 #define         AT91_DDRSDRC_SDCOVF     (1 << 3)                /* Slave Delay Correction Overflow */
  95 #define         AT91_DDRSDRC_SDCUDF     (1 << 4)                /* Slave Delay Correction Underflow */
  96 #define         AT91_DDRSDRC_SDERF      (1 << 5)                /* Slave Delay Correction error */
  97 #define         AT91_DDRSDRC_MDVAL      (0xff <<  8)            /* Master Delay value */
  98 #define         AT91_DDRSDRC_SDVAL      (0xff << 16)            /* Slave Delay value */
  99 #define         AT91_DDRSDRC_SDCVAL     (0xff << 24)            /* Slave Delay Correction value */
 100
 101 /* Register access macros */
 102 #define at91_ramc_read(num, reg) \
 103         at91_sys_read(AT91_DDRSDRC##num + reg)
 104 #define at91_ramc_write(num, reg, value) \
 105         at91_sys_write(AT91_DDRSDRC##num + reg, value)
 106
 107
 108 #endif