arch/powerpc/cpu/mpc83xx/speed.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * (C) Copyright 2000-2002
   4  * Wolfgang Denk, DENX Software Engineering, [email protected].
   5  *
   6  * Copyright (C) 2004-2007 Freescale Semiconductor, Inc.
   7  */
   8
   9 #ifndef CONFIG_CLK_MPC83XX
  10
  11 #include <common.h>
  12 #include <mpc83xx.h>
  13 #include <command.h>
  14 #include <asm/processor.h>
  15
  16 DECLARE_GLOBAL_DATA_PTR;
  17
  18 /* ----------------------------------------------------------------- */
  19
  20 typedef enum {
  21         _unk,
  22         _off,
  23         _byp,
  24         _x8,
  25         _x4,
  26         _x2,
  27         _x1,
  28         _1x,
  29         _1_5x,
  30         _2x,
  31         _2_5x,
  32         _3x
  33 } mult_t;
  34
  35 typedef struct {
  36         mult_t core_csb_ratio;
  37         mult_t vco_divider;
  38 } corecnf_t;
  39
  40 static corecnf_t corecnf_tab[] = {
  41         {_byp, _byp},           /* 0x00 */
  42         {_byp, _byp},           /* 0x01 */
  43         {_byp, _byp},           /* 0x02 */
  44         {_byp, _byp},           /* 0x03 */
  45         {_byp, _byp},           /* 0x04 */
  46         {_byp, _byp},           /* 0x05 */
  47         {_byp, _byp},           /* 0x06 */
  48         {_byp, _byp},           /* 0x07 */
  49         {_1x, _x2},             /* 0x08 */
  50         {_1x, _x4},             /* 0x09 */
  51         {_1x, _x8},             /* 0x0A */
  52         {_1x, _x8},             /* 0x0B */
  53         {_1_5x, _x2},           /* 0x0C */
  54         {_1_5x, _x4},           /* 0x0D */
  55         {_1_5x, _x8},           /* 0x0E */
  56         {_1_5x, _x8},           /* 0x0F */
  57         {_2x, _x2},             /* 0x10 */
  58         {_2x, _x4},             /* 0x11 */
  59         {_2x, _x8},             /* 0x12 */
  60         {_2x, _x8},             /* 0x13 */
  61         {_2_5x, _x2},           /* 0x14 */
  62         {_2_5x, _x4},           /* 0x15 */
  63         {_2_5x, _x8},           /* 0x16 */
  64         {_2_5x, _x8},           /* 0x17 */
  65         {_3x, _x2},             /* 0x18 */
  66         {_3x, _x4},             /* 0x19 */
  67         {_3x, _x8},             /* 0x1A */
  68         {_3x, _x8},             /* 0x1B */
  69 };
  70
  71 /* ----------------------------------------------------------------- */
  72
  73 /*
  74  *
  75  */
  76 int get_clocks(void)
  77 {
  78         volatile immap_t *im = (immap_t *) CONFIG_SYS_IMMR;
  79         u32 pci_sync_in;
  80         u8 spmf;
  81         u8 clkin_div;
  82         u32 sccr;
  83         u32 corecnf_tab_index;
  84         u8 corepll;
  85         u32 lcrr;
  86
  87         u32 csb_clk;
  88 #if defined(CONFIG_MPC8308) || defined(CONFIG_MPC831x) || \
  89         defined(CONFIG_MPC834x) || defined(CONFIG_MPC837x)
  90         u32 tsec1_clk;
  91         u32 tsec2_clk;
  92         u32 usbdr_clk;
  93 #elif defined(CONFIG_MPC8309)
  94         u32 usbdr_clk;
  95 #endif
  96 #ifdef CONFIG_MPC834x
  97         u32 usbmph_clk;
  98 #endif
  99         u32 core_clk;
 100         u32 i2c1_clk;
 101 #if !defined(CONFIG_MPC832x)
 102         u32 i2c2_clk;
 103 #endif
 104 #if defined(CONFIG_MPC8315)
 105         u32 tdm_clk;
 106 #endif
 107 #if defined(CONFIG_FSL_ESDHC)
 108         u32 sdhc_clk;
 109 #endif
 110 #if !defined(CONFIG_MPC8309)
 111         u32 enc_clk;
 112 #endif
 113         u32 lbiu_clk;
 114         u32 lclk_clk;
 115         u32 mem_clk;
 116 #if defined(CONFIG_MPC8360)
 117         u32 mem_sec_clk;
 118 #endif
 119 #if defined(CONFIG_QE)
 120         u32 qepmf;
 121         u32 qepdf;
 122         u32 qe_clk;
 123         u32 brg_clk;
 124 #endif
 125 #if defined(CONFIG_MPC8308) || defined(CONFIG_MPC831x) || \
 126         defined(CONFIG_MPC837x)
 127         u32 pciexp1_clk;
 128         u32 pciexp2_clk;
 129 #endif
 130 #if defined(CONFIG_MPC837x) || defined(CONFIG_MPC8315)
 131         u32 sata_clk;
 132 #endif
 133
 134         if ((im->sysconf.immrbar & IMMRBAR_BASE_ADDR) != (u32) im)
 135                 return -1;
 136
 137         clkin_div = ((im->clk.spmr & SPMR_CKID) >> SPMR_CKID_SHIFT);
 138
 139         if (im->reset.rcwh & HRCWH_PCI_HOST) {
 140 #if defined(CONFIG_83XX_CLKIN)
 141                 pci_sync_in = CONFIG_83XX_CLKIN / (1 + clkin_div);
 142 #else
 143                 pci_sync_in = 0xDEADBEEF;
 144 #endif
 145         } else {
 146 #if defined(CONFIG_83XX_PCICLK)
 147                 pci_sync_in = CONFIG_83XX_PCICLK;
 148 #else
 149                 pci_sync_in = 0xDEADBEEF;
 150 #endif
 151         }
 152
 153         spmf = (im->clk.spmr & SPMR_SPMF) >> SPMR_SPMF_SHIFT;
 154         csb_clk = pci_sync_in * (1 + clkin_div) * spmf;
 155
 156         sccr = im->clk.sccr;
 157
 158 #if defined(CONFIG_MPC8308) || defined(CONFIG_MPC831x) || \
 159         defined(CONFIG_MPC834x) || defined(CONFIG_MPC837x)
 160         switch ((sccr & SCCR_TSEC1CM) >> SCCR_TSEC1CM_SHIFT) {
 161         case 0:
 162                 tsec1_clk = 0;
 163                 break;
 164         case 1:
 165                 tsec1_clk = csb_clk;
 166                 break;
 167         case 2:
 168                 tsec1_clk = csb_clk / 2;
 169                 break;
 170         case 3:
 171                 tsec1_clk = csb_clk / 3;
 172                 break;
 173         default:
 174                 /* unknown SCCR_TSEC1CM value */
 175                 return -2;
 176         }
 177 #endif
 178
 179 #if defined(CONFIG_MPC830x) || defined(CONFIG_MPC831x) || \
 180         defined(CONFIG_MPC834x) || defined(CONFIG_MPC837x)
 181         switch ((sccr & SCCR_USBDRCM) >> SCCR_USBDRCM_SHIFT) {
 182         case 0:
 183                 usbdr_clk = 0;
 184                 break;
 185         case 1:
 186                 usbdr_clk = csb_clk;
 187                 break;
 188         case 2:
 189                 usbdr_clk = csb_clk / 2;
 190                 break;
 191         case 3:
 192                 usbdr_clk = csb_clk / 3;
 193                 break;
 194         default:
 195                 /* unknown SCCR_USBDRCM value */
 196                 return -3;
 197         }
 198 #endif
 199
 200 #if defined(CONFIG_MPC8308) || defined(CONFIG_MPC8315) || \
 201         defined(CONFIG_MPC834x) || defined(CONFIG_MPC837x)
 202         switch ((sccr & SCCR_TSEC2CM) >> SCCR_TSEC2CM_SHIFT) {
 203         case 0:
 204                 tsec2_clk = 0;
 205                 break;
 206         case 1:
 207                 tsec2_clk = csb_clk;
 208                 break;
 209         case 2:
 210                 tsec2_clk = csb_clk / 2;
 211                 break;
 212         case 3:
 213                 tsec2_clk = csb_clk / 3;
 214                 break;
 215         default:
 216                 /* unknown SCCR_TSEC2CM value */
 217                 return -4;
 218         }
 219 #elif defined(CONFIG_MPC8313)
 220         tsec2_clk = tsec1_clk;
 221
 222         if (!(sccr & SCCR_TSEC1ON))
 223                 tsec1_clk = 0;
 224         if (!(sccr & SCCR_TSEC2ON))
 225                 tsec2_clk = 0;
 226 #endif
 227
 228 #if defined(CONFIG_MPC834x)
 229         switch ((sccr & SCCR_USBMPHCM) >> SCCR_USBMPHCM_SHIFT) {
 230         case 0:
 231                 usbmph_clk = 0;
 232                 break;
 233         case 1:
 234                 usbmph_clk = csb_clk;
 235                 break;
 236         case 2:
 237                 usbmph_clk = csb_clk / 2;
 238                 break;
 239         case 3:
 240                 usbmph_clk = csb_clk / 3;
 241                 break;
 242         default:
 243                 /* unknown SCCR_USBMPHCM value */
 244                 return -5;
 245         }
 246
 247         if (usbmph_clk != 0 && usbdr_clk != 0 && usbmph_clk != usbdr_clk) {
 248                 /* if USB MPH clock is not disabled and
 249                  * USB DR clock is not disabled then
 250                  * USB MPH & USB DR must have the same rate
 251                  */
 252                 return -6;
 253         }
 254 #endif
 255 #if !defined(CONFIG_MPC8309)
 256         switch ((sccr & SCCR_ENCCM) >> SCCR_ENCCM_SHIFT) {
 257         case 0:
 258                 enc_clk = 0;
 259                 break;
 260         case 1:
 261                 enc_clk = csb_clk;
 262                 break;
 263         case 2:
 264                 enc_clk = csb_clk / 2;
 265                 break;
 266         case 3:
 267                 enc_clk = csb_clk / 3;
 268                 break;
 269         default:
 270                 /* unknown SCCR_ENCCM value */
 271                 return -7;
 272         }
 273 #endif
 274
 275 #if defined(CONFIG_FSL_ESDHC)
 276         switch ((sccr & SCCR_SDHCCM) >> SCCR_SDHCCM_SHIFT) {
 277         case 0:
 278                 sdhc_clk = 0;
 279                 break;
 280         case 1:
 281                 sdhc_clk = csb_clk;
 282                 break;
 283         case 2:
 284                 sdhc_clk = csb_clk / 2;
 285                 break;
 286         case 3:
 287                 sdhc_clk = csb_clk / 3;
 288                 break;
 289         default:
 290                 /* unknown SCCR_SDHCCM value */
 291                 return -8;
 292         }
 293 #endif
 294 #if defined(CONFIG_MPC8315)
 295         switch ((sccr & SCCR_TDMCM) >> SCCR_TDMCM_SHIFT) {
 296         case 0:
 297                 tdm_clk = 0;
 298                 break;
 299         case 1:
 300                 tdm_clk = csb_clk;
 301                 break;
 302         case 2:
 303                 tdm_clk = csb_clk / 2;
 304                 break;
 305         case 3:
 306                 tdm_clk = csb_clk / 3;
 307                 break;
 308         default:
 309                 /* unknown SCCR_TDMCM value */
 310                 return -8;
 311         }
 312 #endif
 313
 314 #if defined(CONFIG_MPC834x)
 315         i2c1_clk = tsec2_clk;
 316 #elif defined(CONFIG_MPC8360)
 317         i2c1_clk = csb_clk;
 318 #elif defined(CONFIG_MPC832x)
 319         i2c1_clk = enc_clk;
 320 #elif defined(CONFIG_MPC8308) || defined(CONFIG_MPC831x)
 321         i2c1_clk = enc_clk;
 322 #elif defined(CONFIG_FSL_ESDHC)
 323         i2c1_clk = sdhc_clk;
 324 #elif defined(CONFIG_MPC837x)
 325         i2c1_clk = enc_clk;
 326 #elif defined(CONFIG_MPC8309)
 327         i2c1_clk = csb_clk;
 328 #endif
 329 #if !defined(CONFIG_MPC832x)
 330         i2c2_clk = csb_clk; /* i2c-2 clk is equal to csb clk */
 331 #endif
 332
 333 #if defined(CONFIG_MPC8308) || defined(CONFIG_MPC831x) || \
 334         defined(CONFIG_MPC837x)
 335         switch ((sccr & SCCR_PCIEXP1CM) >> SCCR_PCIEXP1CM_SHIFT) {
 336         case 0:
 337                 pciexp1_clk = 0;
 338                 break;
 339         case 1:
 340                 pciexp1_clk = csb_clk;
 341                 break;
 342         case 2:
 343                 pciexp1_clk = csb_clk / 2;
 344                 break;
 345         case 3:
 346                 pciexp1_clk = csb_clk / 3;
 347                 break;
 348         default:
 349                 /* unknown SCCR_PCIEXP1CM value */
 350                 return -9;
 351         }
 352
 353         switch ((sccr & SCCR_PCIEXP2CM) >> SCCR_PCIEXP2CM_SHIFT) {
 354         case 0:
 355                 pciexp2_clk = 0;
 356                 break;
 357         case 1:
 358                 pciexp2_clk = csb_clk;
 359                 break;
 360         case 2:
 361                 pciexp2_clk = csb_clk / 2;
 362                 break;
 363         case 3:
 364                 pciexp2_clk = csb_clk / 3;
 365                 break;
 366         default:
 367                 /* unknown SCCR_PCIEXP2CM value */
 368                 return -10;
 369         }
 370 #endif
 371
 372 #if defined(CONFIG_MPC837x) || defined(CONFIG_MPC8315)
 373         switch ((sccr & SCCR_SATA1CM) >> SCCR_SATA1CM_SHIFT) {
 374         case 0:
 375                 sata_clk = 0;
 376                 break;
 377         case 1:
 378                 sata_clk = csb_clk;
 379                 break;
 380         case 2:
 381                 sata_clk = csb_clk / 2;
 382                 break;
 383         case 3:
 384                 sata_clk = csb_clk / 3;
 385                 break;
 386         default:
 387                 /* unknown SCCR_SATA1CM value */
 388                 return -11;
 389         }
 390 #endif
 391
 392         lbiu_clk = csb_clk *
 393                    (1 + ((im->clk.spmr & SPMR_LBIUCM) >> SPMR_LBIUCM_SHIFT));
 394         lcrr = (im->im_lbc.lcrr & LCRR_CLKDIV) >> LCRR_CLKDIV_SHIFT;
 395         switch (lcrr) {
 396         case 2:
 397         case 4:
 398         case 8:
 399                 lclk_clk = lbiu_clk / lcrr;
 400                 break;
 401         default:
 402                 /* unknown lcrr */
 403                 return -12;
 404         }
 405
 406         mem_clk = csb_clk *
 407                   (1 + ((im->clk.spmr & SPMR_DDRCM) >> SPMR_DDRCM_SHIFT));
 408         corepll = (im->clk.spmr & SPMR_COREPLL) >> SPMR_COREPLL_SHIFT;
 409
 410 #if defined(CONFIG_MPC8360)
 411         mem_sec_clk = csb_clk * (1 +
 412                        ((im->clk.spmr & SPMR_LBIUCM) >> SPMR_LBIUCM_SHIFT));
 413 #endif
 414
 415         corecnf_tab_index = ((corepll & 0x1F) << 2) | ((corepll & 0x60) >> 5);
 416         if (corecnf_tab_index > (ARRAY_SIZE(corecnf_tab))) {
 417                 /* corecnf_tab_index is too high, possibly wrong value */
 418                 return -11;
 419         }
 420         switch (corecnf_tab[corecnf_tab_index].core_csb_ratio) {
 421         case _byp:
 422         case _x1:
 423         case _1x:
 424                 core_clk = csb_clk;
 425                 break;
 426         case _1_5x:
 427                 core_clk = (3 * csb_clk) / 2;
 428                 break;
 429         case _2x:
 430                 core_clk = 2 * csb_clk;
 431                 break;
 432         case _2_5x:
 433                 core_clk = (5 * csb_clk) / 2;
 434                 break;
 435         case _3x:
 436                 core_clk = 3 * csb_clk;
 437                 break;
 438         default:
 439                 /* unknown core to csb ratio */
 440                 return -13;
 441         }
 442
 443 #if defined(CONFIG_QE)
 444         qepmf = (im->clk.spmr & SPMR_CEPMF) >> SPMR_CEPMF_SHIFT;
 445         qepdf = (im->clk.spmr & SPMR_CEPDF) >> SPMR_CEPDF_SHIFT;
 446         qe_clk = (pci_sync_in * qepmf) / (1 + qepdf);
 447         brg_clk = qe_clk / 2;
 448 #endif
 449
 450         gd->arch.csb_clk = csb_clk;
 451 #if defined(CONFIG_MPC8308) || defined(CONFIG_MPC831x) || \
 452         defined(CONFIG_MPC834x) || defined(CONFIG_MPC837x)
 453         gd->arch.tsec1_clk = tsec1_clk;
 454         gd->arch.tsec2_clk = tsec2_clk;
 455         gd->arch.usbdr_clk = usbdr_clk;
 456 #elif defined(CONFIG_MPC8309)
 457         gd->arch.usbdr_clk = usbdr_clk;
 458 #endif
 459 #if defined(CONFIG_MPC834x)
 460         gd->arch.usbmph_clk = usbmph_clk;
 461 #endif
 462 #if defined(CONFIG_MPC8315)
 463         gd->arch.tdm_clk = tdm_clk;
 464 #endif
 465 #if defined(CONFIG_FSL_ESDHC)
 466         gd->arch.sdhc_clk = sdhc_clk;
 467 #endif
 468         gd->arch.core_clk = core_clk;
 469         gd->arch.i2c1_clk = i2c1_clk;
 470 #if !defined(CONFIG_MPC832x)
 471         gd->arch.i2c2_clk = i2c2_clk;
 472 #endif
 473 #if !defined(CONFIG_MPC8309)
 474         gd->arch.enc_clk = enc_clk;
 475 #endif
 476         gd->arch.lbiu_clk = lbiu_clk;
 477         gd->arch.lclk_clk = lclk_clk;
 478         gd->mem_clk = mem_clk;
 479 #if defined(CONFIG_MPC8360)
 480         gd->arch.mem_sec_clk = mem_sec_clk;
 481 #endif
 482 #if defined(CONFIG_QE)
 483         gd->arch.qe_clk = qe_clk;
 484         gd->arch.brg_clk = brg_clk;
 485 #endif
 486 #if defined(CONFIG_MPC8308) || defined(CONFIG_MPC831x) || \
 487         defined(CONFIG_MPC837x)
 488         gd->arch.pciexp1_clk = pciexp1_clk;
 489         gd->arch.pciexp2_clk = pciexp2_clk;
 490 #endif
 491 #if defined(CONFIG_MPC837x) || defined(CONFIG_MPC8315)
 492         gd->arch.sata_clk = sata_clk;
 493 #endif
 494         gd->pci_clk = pci_sync_in;
 495         gd->cpu_clk = gd->arch.core_clk;
 496         gd->bus_clk = gd->arch.csb_clk;
 497         return 0;
 498
 499 }
 500
 501 /********************************************
 502  * get_bus_freq
 503  * return system bus freq in Hz
 504  *********************************************/
 505 ulong get_bus_freq(ulong dummy)
 506 {
 507         return gd->arch.csb_clk;
 508 }
 509
 510 /********************************************
 511  * get_ddr_freq
 512  * return ddr bus freq in Hz
 513  *********************************************/
 514 ulong get_ddr_freq(ulong dummy)
 515 {
 516         return gd->mem_clk;
 517 }
 518
 519 static int do_clocks(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 520 {
 521         char buf[32];
 522
 523         printf("Clock configuration:\n");
 524         printf("  Core:                %-4s MHz\n",
 525                strmhz(buf, gd->arch.core_clk));
 526         printf("  Coherent System Bus: %-4s MHz\n",
 527                strmhz(buf, gd->arch.csb_clk));
 528 #if defined(CONFIG_QE)
 529         printf("  QE:                  %-4s MHz\n",
 530                strmhz(buf, gd->arch.qe_clk));
 531         printf("  BRG:                 %-4s MHz\n",
 532                strmhz(buf, gd->arch.brg_clk));
 533 #endif
 534         printf("  Local Bus Controller:%-4s MHz\n",
 535                strmhz(buf, gd->arch.lbiu_clk));
 536         printf("  Local Bus:           %-4s MHz\n",
 537                strmhz(buf, gd->arch.lclk_clk));
 538         printf("  DDR:                 %-4s MHz\n", strmhz(buf, gd->mem_clk));
 539 #if defined(CONFIG_MPC8360)
 540         printf("  DDR Secondary:       %-4s MHz\n",
 541                strmhz(buf, gd->arch.mem_sec_clk));
 542 #endif
 543 #if !defined(CONFIG_MPC8309)
 544         printf("  SEC:                 %-4s MHz\n",
 545                strmhz(buf, gd->arch.enc_clk));
 546 #endif
 547         printf("  I2C1:                %-4s MHz\n",
 548                strmhz(buf, gd->arch.i2c1_clk));
 549 #if !defined(CONFIG_MPC832x)
 550         printf("  I2C2:                %-4s MHz\n",
 551                strmhz(buf, gd->arch.i2c2_clk));
 552 #endif
 553 #if defined(CONFIG_MPC8315)
 554         printf("  TDM:                 %-4s MHz\n",
 555                strmhz(buf, gd->arch.tdm_clk));
 556 #endif
 557 #if defined(CONFIG_FSL_ESDHC)
 558         printf("  SDHC:                %-4s MHz\n",
 559                strmhz(buf, gd->arch.sdhc_clk));
 560 #endif
 561 #if defined(CONFIG_MPC8308) || defined(CONFIG_MPC831x) || \
 562         defined(CONFIG_MPC834x) || defined(CONFIG_MPC837x)
 563         printf("  TSEC1:               %-4s MHz\n",
 564                strmhz(buf, gd->arch.tsec1_clk));
 565         printf("  TSEC2:               %-4s MHz\n",
 566                strmhz(buf, gd->arch.tsec2_clk));
 567         printf("  USB DR:              %-4s MHz\n",
 568                strmhz(buf, gd->arch.usbdr_clk));
 569 #elif defined(CONFIG_MPC8309)
 570         printf("  USB DR:              %-4s MHz\n",
 571                strmhz(buf, gd->arch.usbdr_clk));
 572 #endif
 573 #if defined(CONFIG_MPC834x)
 574         printf("  USB MPH:             %-4s MHz\n",
 575                strmhz(buf, gd->arch.usbmph_clk));
 576 #endif
 577 #if defined(CONFIG_MPC8308) || defined(CONFIG_MPC831x) || \
 578         defined(CONFIG_MPC837x)
 579         printf("  PCIEXP1:             %-4s MHz\n",
 580                strmhz(buf, gd->arch.pciexp1_clk));
 581         printf("  PCIEXP2:             %-4s MHz\n",
 582                strmhz(buf, gd->arch.pciexp2_clk));
 583 #endif
 584 #if defined(CONFIG_MPC837x) || defined(CONFIG_MPC8315)
 585         printf("  SATA:                %-4s MHz\n",
 586                strmhz(buf, gd->arch.sata_clk));
 587 #endif
 588         return 0;
 589 }
 590
 591 U_BOOT_CMD(clocks, 1, 0, do_clocks,
 592         "print clock configuration",
 593         "    clocks"
 594 );
 595
 596 #endif