kernel/arch/blackfin/include/asm/mem_init.h

   1 /*
   2  * arch/blackfin/include/asm/mem_init.h - reprogram clocks / memory
   3  *
   4  * Copyright 2004-2008 Analog Devices Inc.
   5  *
   6  * Licensed under the GPL-2 or later.
   7  */
   8
   9 #ifndef __MEM_INIT_H__
  10 #define __MEM_INIT_H__
  11
  12 #if defined(EBIU_SDGCTL)
  13 #if defined(CONFIG_MEM_MT48LC16M16A2TG_75) || \
  14     defined(CONFIG_MEM_MT48LC64M4A2FB_7E) || \
  15     defined(CONFIG_MEM_MT48LC16M8A2TG_75) || \
  16     defined(CONFIG_MEM_MT48LC32M8A2_75) || \
  17     defined(CONFIG_MEM_MT48LC8M32B2B5_7) || \
  18     defined(CONFIG_MEM_MT48LC32M16A2TG_75) || \
  19     defined(CONFIG_MEM_MT48LC32M8A2_75)
  20 #if (CONFIG_SCLK_HZ > 119402985)
  21 #define SDRAM_tRP       TRP_2
  22 #define SDRAM_tRP_num   2
  23 #define SDRAM_tRAS      TRAS_7
  24 #define SDRAM_tRAS_num  7
  25 #define SDRAM_tRCD      TRCD_2
  26 #define SDRAM_tWR       TWR_2
  27 #endif
  28 #if (CONFIG_SCLK_HZ > 104477612) && (CONFIG_SCLK_HZ <= 119402985)
  29 #define SDRAM_tRP       TRP_2
  30 #define SDRAM_tRP_num   2
  31 #define SDRAM_tRAS      TRAS_6
  32 #define SDRAM_tRAS_num  6
  33 #define SDRAM_tRCD      TRCD_2
  34 #define SDRAM_tWR       TWR_2
  35 #endif
  36 #if (CONFIG_SCLK_HZ > 89552239) && (CONFIG_SCLK_HZ <= 104477612)
  37 #define SDRAM_tRP       TRP_2
  38 #define SDRAM_tRP_num   2
  39 #define SDRAM_tRAS      TRAS_5
  40 #define SDRAM_tRAS_num  5
  41 #define SDRAM_tRCD      TRCD_2
  42 #define SDRAM_tWR       TWR_2
  43 #endif
  44 #if (CONFIG_SCLK_HZ > 74626866) && (CONFIG_SCLK_HZ <= 89552239)
  45 #define SDRAM_tRP       TRP_2
  46 #define SDRAM_tRP_num   2
  47 #define SDRAM_tRAS      TRAS_4
  48 #define SDRAM_tRAS_num  4
  49 #define SDRAM_tRCD      TRCD_2
  50 #define SDRAM_tWR       TWR_2
  51 #endif
  52 #if (CONFIG_SCLK_HZ > 66666667) && (CONFIG_SCLK_HZ <= 74626866)
  53 #define SDRAM_tRP       TRP_2
  54 #define SDRAM_tRP_num   2
  55 #define SDRAM_tRAS      TRAS_3
  56 #define SDRAM_tRAS_num  3
  57 #define SDRAM_tRCD      TRCD_2
  58 #define SDRAM_tWR       TWR_2
  59 #endif
  60 #if (CONFIG_SCLK_HZ > 59701493) && (CONFIG_SCLK_HZ <= 66666667)
  61 #define SDRAM_tRP       TRP_1
  62 #define SDRAM_tRP_num   1
  63 #define SDRAM_tRAS      TRAS_4
  64 #define SDRAM_tRAS_num  4
  65 #define SDRAM_tRCD      TRCD_1
  66 #define SDRAM_tWR       TWR_2
  67 #endif
  68 #if (CONFIG_SCLK_HZ > 44776119) && (CONFIG_SCLK_HZ <= 59701493)
  69 #define SDRAM_tRP       TRP_1
  70 #define SDRAM_tRP_num   1
  71 #define SDRAM_tRAS      TRAS_3
  72 #define SDRAM_tRAS_num  3
  73 #define SDRAM_tRCD      TRCD_1
  74 #define SDRAM_tWR       TWR_2
  75 #endif
  76 #if (CONFIG_SCLK_HZ > 29850746) && (CONFIG_SCLK_HZ <= 44776119)
  77 #define SDRAM_tRP       TRP_1
  78 #define SDRAM_tRP_num   1
  79 #define SDRAM_tRAS      TRAS_2
  80 #define SDRAM_tRAS_num  2
  81 #define SDRAM_tRCD      TRCD_1
  82 #define SDRAM_tWR       TWR_2
  83 #endif
  84 #if (CONFIG_SCLK_HZ <= 29850746)
  85 #define SDRAM_tRP       TRP_1
  86 #define SDRAM_tRP_num   1
  87 #define SDRAM_tRAS      TRAS_1
  88 #define SDRAM_tRAS_num  1
  89 #define SDRAM_tRCD      TRCD_1
  90 #define SDRAM_tWR       TWR_2
  91 #endif
  92 #endif
  93
  94 /*
  95  * The BF526-EZ-Board changed SDRAM chips between revisions,
  96  * so we use below timings to accommodate both.
  97  */
  98 #if defined(CONFIG_MEM_MT48H32M16LFCJ_75)
  99 #if (CONFIG_SCLK_HZ > 119402985)
 100 #define SDRAM_tRP       TRP_2
 101 #define SDRAM_tRP_num   2
 102 #define SDRAM_tRAS      TRAS_8
 103 #define SDRAM_tRAS_num  8
 104 #define SDRAM_tRCD      TRCD_2
 105 #define SDRAM_tWR       TWR_2
 106 #endif
 107 #if (CONFIG_SCLK_HZ > 104477612) && (CONFIG_SCLK_HZ <= 119402985)
 108 #define SDRAM_tRP       TRP_2
 109 #define SDRAM_tRP_num   2
 110 #define SDRAM_tRAS      TRAS_7
 111 #define SDRAM_tRAS_num  7
 112 #define SDRAM_tRCD      TRCD_2
 113 #define SDRAM_tWR       TWR_2
 114 #endif
 115 #if (CONFIG_SCLK_HZ > 89552239) && (CONFIG_SCLK_HZ <= 104477612)
 116 #define SDRAM_tRP       TRP_2
 117 #define SDRAM_tRP_num   2
 118 #define SDRAM_tRAS      TRAS_6
 119 #define SDRAM_tRAS_num  6
 120 #define SDRAM_tRCD      TRCD_2
 121 #define SDRAM_tWR       TWR_2
 122 #endif
 123 #if (CONFIG_SCLK_HZ > 74626866) && (CONFIG_SCLK_HZ <= 89552239)
 124 #define SDRAM_tRP       TRP_2
 125 #define SDRAM_tRP_num   2
 126 #define SDRAM_tRAS      TRAS_5
 127 #define SDRAM_tRAS_num  5
 128 #define SDRAM_tRCD      TRCD_2
 129 #define SDRAM_tWR       TWR_2
 130 #endif
 131 #if (CONFIG_SCLK_HZ > 66666667) && (CONFIG_SCLK_HZ <= 74626866)
 132 #define SDRAM_tRP       TRP_2
 133 #define SDRAM_tRP_num   2
 134 #define SDRAM_tRAS      TRAS_4
 135 #define SDRAM_tRAS_num  4
 136 #define SDRAM_tRCD      TRCD_2
 137 #define SDRAM_tWR       TWR_2
 138 #endif
 139 #if (CONFIG_SCLK_HZ > 59701493) && (CONFIG_SCLK_HZ <= 66666667)
 140 #define SDRAM_tRP       TRP_2
 141 #define SDRAM_tRP_num   2
 142 #define SDRAM_tRAS      TRAS_4
 143 #define SDRAM_tRAS_num  4
 144 #define SDRAM_tRCD      TRCD_1
 145 #define SDRAM_tWR       TWR_2
 146 #endif
 147 #if (CONFIG_SCLK_HZ > 44776119) && (CONFIG_SCLK_HZ <= 59701493)
 148 #define SDRAM_tRP       TRP_2
 149 #define SDRAM_tRP_num   2
 150 #define SDRAM_tRAS      TRAS_3
 151 #define SDRAM_tRAS_num  3
 152 #define SDRAM_tRCD      TRCD_1
 153 #define SDRAM_tWR       TWR_2
 154 #endif
 155 #if (CONFIG_SCLK_HZ > 29850746) && (CONFIG_SCLK_HZ <= 44776119)
 156 #define SDRAM_tRP       TRP_1
 157 #define SDRAM_tRP_num   1
 158 #define SDRAM_tRAS      TRAS_3
 159 #define SDRAM_tRAS_num  3
 160 #define SDRAM_tRCD      TRCD_1
 161 #define SDRAM_tWR       TWR_2
 162 #endif
 163 #if (CONFIG_SCLK_HZ <= 29850746)
 164 #define SDRAM_tRP       TRP_1
 165 #define SDRAM_tRP_num   1
 166 #define SDRAM_tRAS      TRAS_2
 167 #define SDRAM_tRAS_num  2
 168 #define SDRAM_tRCD      TRCD_1
 169 #define SDRAM_tWR       TWR_2
 170 #endif
 171 #endif
 172
 173 #if defined(CONFIG_MEM_MT48LC16M8A2TG_75) || \
 174     defined(CONFIG_MEM_MT48LC8M32B2B5_7)
 175   /*SDRAM INFORMATION: */
 176 #define SDRAM_Tref  64          /* Refresh period in milliseconds   */
 177 #define SDRAM_NRA   4096        /* Number of row addresses in SDRAM */
 178 #define SDRAM_CL    CL_3
 179 #endif
 180
 181 #if defined(CONFIG_MEM_MT48LC32M8A2_75) || \
 182     defined(CONFIG_MEM_MT48LC64M4A2FB_7E) || \
 183     defined(CONFIG_MEM_MT48LC32M16A2TG_75) || \
 184     defined(CONFIG_MEM_MT48LC16M16A2TG_75) || \
 185     defined(CONFIG_MEM_MT48LC32M8A2_75)
 186   /*SDRAM INFORMATION: */
 187 #define SDRAM_Tref  64          /* Refresh period in milliseconds   */
 188 #define SDRAM_NRA   8192        /* Number of row addresses in SDRAM */
 189 #define SDRAM_CL    CL_3
 190 #endif
 191
 192 #if defined(CONFIG_MEM_MT48H32M16LFCJ_75)
 193   /*SDRAM INFORMATION: */
 194 #define SDRAM_Tref  64          /* Refresh period in milliseconds   */
 195 #define SDRAM_NRA   8192        /* Number of row addresses in SDRAM */
 196 #define SDRAM_CL    CL_2
 197 #endif
 198
 199
 200 #ifdef CONFIG_BFIN_KERNEL_CLOCK_MEMINIT_CALC
 201 /* Equation from section 17 (p17-46) of BF533 HRM */
 202 #define mem_SDRRC       (((CONFIG_SCLK_HZ / 1000) * SDRAM_Tref) / SDRAM_NRA) - (SDRAM_tRAS_num + SDRAM_tRP_num)
 203
 204 /* Enable SCLK Out */
 205 #define mem_SDGCTL        (SCTLE | SDRAM_CL | SDRAM_tRAS | SDRAM_tRP | SDRAM_tRCD | SDRAM_tWR | PSS)
 206 #else
 207 #define mem_SDRRC       CONFIG_MEM_SDRRC
 208 #define mem_SDGCTL      CONFIG_MEM_SDGCTL
 209 #endif
 210 #endif
 211
 212
 213 #if defined(EBIU_DDRCTL0)
 214 #define MIN_DDR_SCLK(x) (x*(CONFIG_SCLK_HZ/1000/1000)/1000 + 1)
 215 #define MAX_DDR_SCLK(x) (x*(CONFIG_SCLK_HZ/1000/1000)/1000)
 216 #define DDR_CLK_HZ(x)   (1000*1000*1000/x)
 217
 218 #if defined(CONFIG_MEM_MT46V32M16_6T)
 219 #define DDR_SIZE        DEVSZ_512
 220 #define DDR_WIDTH       DEVWD_16
 221 #define DDR_MAX_tCK     13
 222
 223 #define DDR_tRC         DDR_TRC(MIN_DDR_SCLK(60))
 224 #define DDR_tRAS        DDR_TRAS(MIN_DDR_SCLK(42))
 225 #define DDR_tRP         DDR_TRP(MIN_DDR_SCLK(15))
 226 #define DDR_tRFC        DDR_TRFC(MIN_DDR_SCLK(72))
 227 #define DDR_tREFI       DDR_TREFI(MAX_DDR_SCLK(7800))
 228
 229 #define DDR_tRCD        DDR_TRCD(MIN_DDR_SCLK(15))
 230 #define DDR_tWTR        DDR_TWTR(1)
 231 #define DDR_tMRD        DDR_TMRD(MIN_DDR_SCLK(12))
 232 #define DDR_tWR         DDR_TWR(MIN_DDR_SCLK(15))
 233 #endif
 234
 235 #if defined(CONFIG_MEM_MT46V32M16_5B)
 236 #define DDR_SIZE        DEVSZ_512
 237 #define DDR_WIDTH       DEVWD_16
 238 #define DDR_MAX_tCK     13
 239
 240 #define DDR_tRC         DDR_TRC(MIN_DDR_SCLK(55))
 241 #define DDR_tRAS        DDR_TRAS(MIN_DDR_SCLK(40))
 242 #define DDR_tRP         DDR_TRP(MIN_DDR_SCLK(15))
 243 #define DDR_tRFC        DDR_TRFC(MIN_DDR_SCLK(70))
 244 #define DDR_tREFI       DDR_TREFI(MAX_DDR_SCLK(7800))
 245
 246 #define DDR_tRCD        DDR_TRCD(MIN_DDR_SCLK(15))
 247 #define DDR_tWTR        DDR_TWTR(2)
 248 #define DDR_tMRD        DDR_TMRD(MIN_DDR_SCLK(10))
 249 #define DDR_tWR         DDR_TWR(MIN_DDR_SCLK(15))
 250 #endif
 251
 252 #if (CONFIG_SCLK_HZ < DDR_CLK_HZ(DDR_MAX_tCK))
 253 # error "CONFIG_SCLK_HZ is too small (<DDR_CLK_HZ(DDR_MAX_tCK) Hz)."
 254 #elif(CONFIG_SCLK_HZ <= 133333333)
 255 # define        DDR_CL          CL_2
 256 #else
 257 # error "CONFIG_SCLK_HZ is too large (>133333333 Hz)."
 258 #endif
 259
 260 #ifdef CONFIG_BFIN_KERNEL_CLOCK_MEMINIT_CALC
 261 #define mem_DDRCTL0     (DDR_tRP | DDR_tRAS | DDR_tRC | DDR_tRFC | DDR_tREFI)
 262 #define mem_DDRCTL1     (DDR_DATWIDTH | EXTBANK_1 | DDR_SIZE | DDR_WIDTH | DDR_tWTR \
 263                         | DDR_tMRD | DDR_tWR | DDR_tRCD)
 264 #define mem_DDRCTL2     DDR_CL
 265 #else
 266 #define mem_DDRCTL0     CONFIG_MEM_DDRCTL0
 267 #define mem_DDRCTL1     CONFIG_MEM_DDRCTL1
 268 #define mem_DDRCTL2     CONFIG_MEM_DDRCTL2
 269 #endif
 270 #endif
 271
 272 #if defined CONFIG_CLKIN_HALF
 273 #define CLKIN_HALF       1
 274 #else
 275 #define CLKIN_HALF       0
 276 #endif
 277
 278 #if defined CONFIG_PLL_BYPASS
 279 #define PLL_BYPASS      1
 280 #else
 281 #define PLL_BYPASS       0
 282 #endif
 283
 284 #ifdef CONFIG_BF60x
 285
 286 /* DMC status bits */
 287 #define IDLE                    0x1
 288 #define MEMINITDONE             0x4
 289 #define SRACK                   0x8
 290 #define PDACK                   0x10
 291 #define DPDACK                  0x20
 292 #define DLLCALDONE              0x2000
 293 #define PENDREF                 0xF0000
 294 #define PHYRDPHASE              0xF00000
 295 #define PHYRDPHASE_OFFSET       20
 296
 297 /* DMC control bits */
 298 #define LPDDR                   0x2
 299 #define INIT                    0x4
 300 #define SRREQ                   0x8
 301 #define PDREQ                   0x10
 302 #define DPDREQ                  0x20
 303 #define PREC                    0x40
 304 #define ADDRMODE                0x100
 305 #define RDTOWR                  0xE00
 306 #define PPREF                   0x1000
 307 #define DLLCAL                  0x2000
 308
 309 /* DMC DLL control bits */
 310 #define DLLCALRDCNT             0xFF
 311 #define DATACYC                 0xF00
 312 #define DATACYC_OFFSET          8
 313
 314 /* CGU Divisor bits */
 315 #define CSEL_OFFSET             0
 316 #define S0SEL_OFFSET            5
 317 #define SYSSEL_OFFSET           8
 318 #define S1SEL_OFFSET            13
 319 #define DSEL_OFFSET             16
 320 #define OSEL_OFFSET             22
 321 #define ALGN                    0x20000000
 322 #define UPDT                    0x40000000
 323 #define LOCK                    0x80000000
 324
 325 /* CGU Status bits */
 326 #define PLLEN                   0x1
 327 #define PLLBP                   0x2
 328 #define PLOCK                   0x4
 329 #define CLKSALGN                0x8
 330
 331 /* CGU Control bits */
 332 #define MSEL_MASK               0x7F00
 333 #define DF_MASK                 0x1
 334
 335 struct ddr_config {
 336         u32 ddr_clk;
 337         u32 dmc_ddrctl;
 338         u32 dmc_effctl;
 339         u32 dmc_ddrcfg;
 340         u32 dmc_ddrtr0;
 341         u32 dmc_ddrtr1;
 342         u32 dmc_ddrtr2;
 343         u32 dmc_ddrmr;
 344         u32 dmc_ddrmr1;
 345 };
 346
 347 #if defined(CONFIG_MEM_MT47H64M16)
 348 static struct ddr_config ddr_config_table[] __attribute__((section(".data_l1"))) = {
 349         [0] = {
 350                 .ddr_clk    = 125,
 351                 .dmc_ddrctl = 0x00000904,
 352                 .dmc_effctl = 0x004400C0,
 353                 .dmc_ddrcfg = 0x00000422,
 354                 .dmc_ddrtr0 = 0x20705212,
 355                 .dmc_ddrtr1 = 0x201003CF,
 356                 .dmc_ddrtr2 = 0x00320107,
 357                 .dmc_ddrmr  = 0x00000422,
 358                 .dmc_ddrmr1 = 0x4,
 359         },
 360         [1] = {
 361                 .ddr_clk    = 133,
 362                 .dmc_ddrctl = 0x00000904,
 363                 .dmc_effctl = 0x004400C0,
 364                 .dmc_ddrcfg = 0x00000422,
 365                 .dmc_ddrtr0 = 0x20806313,
 366                 .dmc_ddrtr1 = 0x2013040D,
 367                 .dmc_ddrtr2 = 0x00320108,
 368                 .dmc_ddrmr  = 0x00000632,
 369                 .dmc_ddrmr1 = 0x4,
 370         },
 371         [2] = {
 372                 .ddr_clk    = 150,
 373                 .dmc_ddrctl = 0x00000904,
 374                 .dmc_effctl = 0x004400C0,
 375                 .dmc_ddrcfg = 0x00000422,
 376                 .dmc_ddrtr0 = 0x20A07323,
 377                 .dmc_ddrtr1 = 0x20160492,
 378                 .dmc_ddrtr2 = 0x00320209,
 379                 .dmc_ddrmr  = 0x00000632,
 380                 .dmc_ddrmr1 = 0x4,
 381         },
 382         [3] = {
 383                 .ddr_clk    = 166,
 384                 .dmc_ddrctl = 0x00000904,
 385                 .dmc_effctl = 0x004400C0,
 386                 .dmc_ddrcfg = 0x00000422,
 387                 .dmc_ddrtr0 = 0x20A07323,
 388                 .dmc_ddrtr1 = 0x2016050E,
 389                 .dmc_ddrtr2 = 0x00320209,
 390                 .dmc_ddrmr  = 0x00000632,
 391                 .dmc_ddrmr1 = 0x4,
 392         },
 393         [4] = {
 394                 .ddr_clk    = 200,
 395                 .dmc_ddrctl = 0x00000904,
 396                 .dmc_effctl = 0x004400C0,
 397                 .dmc_ddrcfg = 0x00000422,
 398                 .dmc_ddrtr0 = 0x20a07323,
 399                 .dmc_ddrtr1 = 0x2016050f,
 400                 .dmc_ddrtr2 = 0x00320509,
 401                 .dmc_ddrmr  = 0x00000632,
 402                 .dmc_ddrmr1 = 0x4,
 403         },
 404         [5] = {
 405                 .ddr_clk    = 225,
 406                 .dmc_ddrctl = 0x00000904,
 407                 .dmc_effctl = 0x004400C0,
 408                 .dmc_ddrcfg = 0x00000422,
 409                 .dmc_ddrtr0 = 0x20E0A424,
 410                 .dmc_ddrtr1 = 0x302006DB,
 411                 .dmc_ddrtr2 = 0x0032020D,
 412                 .dmc_ddrmr  = 0x00000842,
 413                 .dmc_ddrmr1 = 0x4,
 414         },
 415         [6] = {
 416                 .ddr_clk    = 250,
 417                 .dmc_ddrctl = 0x00000904,
 418                 .dmc_effctl = 0x004400C0,
 419                 .dmc_ddrcfg = 0x00000422,
 420                 .dmc_ddrtr0 = 0x20E0A424,
 421                 .dmc_ddrtr1 = 0x3020079E,
 422                 .dmc_ddrtr2 = 0x0032050D,
 423                 .dmc_ddrmr  = 0x00000842,
 424                 .dmc_ddrmr1 = 0x4,
 425         },
 426 };
 427 #endif
 428
 429 static inline void dmc_enter_self_refresh(void)
 430 {
 431         if (bfin_read_DMC0_STAT() & MEMINITDONE) {
 432                 bfin_write_DMC0_CTL(bfin_read_DMC0_CTL() | SRREQ);
 433                 while (!(bfin_read_DMC0_STAT() & SRACK))
 434                         continue;
 435         }
 436 }
 437
 438 static inline void dmc_exit_self_refresh(void)
 439 {
 440         if (bfin_read_DMC0_STAT() & MEMINITDONE) {
 441                 bfin_write_DMC0_CTL(bfin_read_DMC0_CTL() & ~SRREQ);
 442                 while (bfin_read_DMC0_STAT() & SRACK)
 443                         continue;
 444         }
 445 }
 446
 447 static inline void init_cgu(u32 cgu_div, u32 cgu_ctl)
 448 {
 449         dmc_enter_self_refresh();
 450
 451         /* Don't set the same value of MSEL and DF to CGU_CTL */
 452         if ((bfin_read32(CGU0_CTL) & (MSEL_MASK | DF_MASK))
 453                 != cgu_ctl) {
 454                 bfin_write32(CGU0_DIV, cgu_div);
 455                 bfin_write32(CGU0_CTL, cgu_ctl);
 456                 while ((bfin_read32(CGU0_STAT) & (CLKSALGN | PLLBP)) ||
 457                         !(bfin_read32(CGU0_STAT) & PLOCK))
 458                         continue;
 459         }
 460
 461         bfin_write32(CGU0_DIV, cgu_div | UPDT);
 462         while (bfin_read32(CGU0_STAT) & CLKSALGN)
 463                 continue;
 464
 465         dmc_exit_self_refresh();
 466 }
 467
 468 static inline void init_dmc(u32 dmc_clk)
 469 {
 470         int i, dlldatacycle, dll_ctl;
 471
 472         for (i = 0; i < 7; i++) {
 473                 if (ddr_config_table[i].ddr_clk == dmc_clk) {
 474                         bfin_write_DMC0_CFG(ddr_config_table[i].dmc_ddrcfg);
 475                         bfin_write_DMC0_TR0(ddr_config_table[i].dmc_ddrtr0);
 476                         bfin_write_DMC0_TR1(ddr_config_table[i].dmc_ddrtr1);
 477                         bfin_write_DMC0_TR2(ddr_config_table[i].dmc_ddrtr2);
 478                         bfin_write_DMC0_MR(ddr_config_table[i].dmc_ddrmr);
 479                         bfin_write_DMC0_EMR1(ddr_config_table[i].dmc_ddrmr1);
 480                         bfin_write_DMC0_EFFCTL(ddr_config_table[i].dmc_effctl);
 481                         bfin_write_DMC0_CTL(ddr_config_table[i].dmc_ddrctl);
 482                         break;
 483                 }
 484         }
 485
 486         while (!(bfin_read_DMC0_STAT() & MEMINITDONE))
 487                 continue;
 488
 489         dlldatacycle = (bfin_read_DMC0_STAT() & PHYRDPHASE) >> PHYRDPHASE_OFFSET;
 490         dll_ctl = bfin_read_DMC0_DLLCTL();
 491         dll_ctl &= ~DATACYC;
 492         bfin_write_DMC0_DLLCTL(dll_ctl | (dlldatacycle << DATACYC_OFFSET));
 493
 494         while (!(bfin_read_DMC0_STAT() & DLLCALDONE))
 495                 continue;
 496 }
 497 #endif
 498
 499 #endif /*__MEM_INIT_H__*/
 500