arch/arm/mach-socfpga/clock_manager_arria10.c

   1 /*
   2  * Copyright (C) 2016-2017 Intel Corporation
   3  *
   4  * SPDX-License-Identifier:    GPL-2.0
   5  */
   6
   7 #include <common.h>
   8 #include <fdtdec.h>
   9 #include <asm/io.h>
  10 #include <dm.h>
  11 #include <asm/arch/clock_manager.h>
  12
  13 DECLARE_GLOBAL_DATA_PTR;
  14
  15 static u32 eosc1_hz;
  16 static u32 cb_intosc_hz;
  17 static u32 f2s_free_hz;
  18 static u32 cm_l4_main_clk_hz;
  19 static u32 cm_l4_sp_clk_hz;
  20 static u32 cm_l4_mp_clk_hz;
  21 static u32 cm_l4_sys_free_clk_hz;
  22
  23 struct mainpll_cfg {
  24         u32 vco0_psrc;
  25         u32 vco1_denom;
  26         u32 vco1_numer;
  27         u32 mpuclk;
  28         u32 mpuclk_cnt;
  29         u32 mpuclk_src;
  30         u32 nocclk;
  31         u32 nocclk_cnt;
  32         u32 nocclk_src;
  33         u32 cntr2clk_cnt;
  34         u32 cntr3clk_cnt;
  35         u32 cntr4clk_cnt;
  36         u32 cntr5clk_cnt;
  37         u32 cntr6clk_cnt;
  38         u32 cntr7clk_cnt;
  39         u32 cntr7clk_src;
  40         u32 cntr8clk_cnt;
  41         u32 cntr9clk_cnt;
  42         u32 cntr9clk_src;
  43         u32 cntr15clk_cnt;
  44         u32 nocdiv_l4mainclk;
  45         u32 nocdiv_l4mpclk;
  46         u32 nocdiv_l4spclk;
  47         u32 nocdiv_csatclk;
  48         u32 nocdiv_cstraceclk;
  49         u32 nocdiv_cspdbclk;
  50 };
  51
  52 struct perpll_cfg {
  53         u32 vco0_psrc;
  54         u32 vco1_denom;
  55         u32 vco1_numer;
  56         u32 cntr2clk_cnt;
  57         u32 cntr2clk_src;
  58         u32 cntr3clk_cnt;
  59         u32 cntr3clk_src;
  60         u32 cntr4clk_cnt;
  61         u32 cntr4clk_src;
  62         u32 cntr5clk_cnt;
  63         u32 cntr5clk_src;
  64         u32 cntr6clk_cnt;
  65         u32 cntr6clk_src;
  66         u32 cntr7clk_cnt;
  67         u32 cntr8clk_cnt;
  68         u32 cntr8clk_src;
  69         u32 cntr9clk_cnt;
  70         u32 emacctl_emac0sel;
  71         u32 emacctl_emac1sel;
  72         u32 emacctl_emac2sel;
  73         u32 gpiodiv_gpiodbclk;
  74 };
  75
  76 struct alteragrp_cfg {
  77         u32 nocclk;
  78         u32 mpuclk;
  79 };
  80
  81 static const struct socfpga_clock_manager *clock_manager_base =
  82         (struct socfpga_clock_manager *)SOCFPGA_CLKMGR_ADDRESS;
  83
  84 static int of_to_struct(const void *blob, int node, int cfg_len, void *cfg)
  85 {
  86         if (fdtdec_get_int_array(blob, node, "altr,of_reg_value",
  87                                  (u32 *)cfg, cfg_len)) {
  88                 /* could not find required property */
  89                 return -EINVAL;
  90         }
  91
  92         return 0;
  93 }
  94
  95 static int of_get_input_clks(const void *blob, int node, u32 *val)
  96 {
  97         *val = fdtdec_get_uint(blob, node, "clock-frequency", 0);
  98         if (!*val)
  99                 return -EINVAL;
 100
 101         return 0;
 102 }
 103
 104 static int of_get_clk_cfg(const void *blob, struct mainpll_cfg *main_cfg,
 105                           struct perpll_cfg *per_cfg,
 106                           struct alteragrp_cfg *altrgrp_cfg)
 107 {
 108         int node, child, len;
 109         const char *node_name;
 110
 111         node = fdtdec_next_compatible(blob, 0, COMPAT_ALTERA_SOCFPGA_CLK);
 112         if (node < 0)
 113                 return -EINVAL;
 114
 115         child = fdt_first_subnode(blob, node);
 116         if (child < 0)
 117                 return -EINVAL;
 118
 119         child = fdt_first_subnode(blob, child);
 120         if (child < 0)
 121                 return -EINVAL;
 122
 123         node_name = fdt_get_name(blob, child, &len);
 124
 125         while (node_name) {
 126                 if (!strcmp(node_name, "osc1")) {
 127                         if (of_get_input_clks(blob, child, &eosc1_hz))
 128                                 return -EINVAL;
 129                 } else if (!strcmp(node_name, "cb_intosc_ls_clk")) {
 130                         if (of_get_input_clks(blob, child, &cb_intosc_hz))
 131                                 return -EINVAL;
 132                 } else if (!strcmp(node_name, "f2s_free_clk")) {
 133                         if (of_get_input_clks(blob, child, &f2s_free_hz))
 134                                 return -EINVAL;
 135                 } else if (!strcmp(node_name, "main_pll")) {
 136                         if (of_to_struct(blob, child,
 137                                          sizeof(*main_cfg)/sizeof(u32),
 138                                          main_cfg))
 139                                 return -EINVAL;
 140                 } else if (!strcmp(node_name, "periph_pll")) {
 141                         if (of_to_struct(blob, child,
 142                                          sizeof(*per_cfg)/sizeof(u32),
 143                                          per_cfg))
 144                                 return -EINVAL;
 145                 } else if (!strcmp(node_name, "altera")) {
 146                         if (of_to_struct(blob, child,
 147                                          sizeof(*altrgrp_cfg)/sizeof(u32),
 148                                          altrgrp_cfg))
 149                                 return -EINVAL;
 150
 151                         main_cfg->mpuclk = altrgrp_cfg->mpuclk;
 152                         main_cfg->nocclk = altrgrp_cfg->nocclk;
 153                 }
 154                 child = fdt_next_subnode(blob, child);
 155
 156                 if (child < 0)
 157                         break;
 158
 159                 node_name = fdt_get_name(blob, child, &len);
 160         }
 161
 162         return 0;
 163 }
 164
 165 /* calculate the intended main VCO frequency based on handoff */
 166 static unsigned int cm_calc_handoff_main_vco_clk_hz
 167                                         (struct mainpll_cfg *main_cfg)
 168 {
 169         unsigned int clk_hz;
 170
 171         /* Check main VCO clock source: eosc, intosc or f2s? */
 172         switch (main_cfg->vco0_psrc) {
 173         case CLKMGR_MAINPLL_VCO0_PSRC_EOSC:
 174                 clk_hz = eosc1_hz;
 175                 break;
 176         case CLKMGR_MAINPLL_VCO0_PSRC_E_INTOSC:
 177                 clk_hz = cb_intosc_hz;
 178                 break;
 179         case CLKMGR_MAINPLL_VCO0_PSRC_F2S:
 180                 clk_hz = f2s_free_hz;
 181                 break;
 182         default:
 183                 return 0;
 184         }
 185
 186         /* calculate the VCO frequency */
 187         clk_hz /= 1 + main_cfg->vco1_denom;
 188         clk_hz *= 1 + main_cfg->vco1_numer;
 189
 190         return clk_hz;
 191 }
 192
 193 /* calculate the intended periph VCO frequency based on handoff */
 194 static unsigned int cm_calc_handoff_periph_vco_clk_hz(
 195                 struct mainpll_cfg *main_cfg, struct perpll_cfg *per_cfg)
 196 {
 197         unsigned int clk_hz;
 198
 199         /* Check periph VCO clock source: eosc, intosc, f2s or mainpll? */
 200         switch (per_cfg->vco0_psrc) {
 201         case CLKMGR_PERPLL_VCO0_PSRC_EOSC:
 202                 clk_hz = eosc1_hz;
 203                 break;
 204         case CLKMGR_PERPLL_VCO0_PSRC_E_INTOSC:
 205                 clk_hz = cb_intosc_hz;
 206                 break;
 207         case CLKMGR_PERPLL_VCO0_PSRC_F2S:
 208                 clk_hz = f2s_free_hz;
 209                 break;
 210         case CLKMGR_PERPLL_VCO0_PSRC_MAIN:
 211                 clk_hz = cm_calc_handoff_main_vco_clk_hz(main_cfg);
 212                 clk_hz /= main_cfg->cntr15clk_cnt;
 213                 break;
 214         default:
 215                 return 0;
 216         }
 217
 218         /* calculate the VCO frequency */
 219         clk_hz /= 1 + per_cfg->vco1_denom;
 220         clk_hz *= 1 + per_cfg->vco1_numer;
 221
 222         return clk_hz;
 223 }
 224
 225 /* calculate the intended MPU clock frequency based on handoff */
 226 static unsigned int cm_calc_handoff_mpu_clk_hz(struct mainpll_cfg *main_cfg,
 227                                                struct perpll_cfg *per_cfg)
 228 {
 229         unsigned int clk_hz;
 230
 231         /* Check MPU clock source: main, periph, osc1, intosc or f2s? */
 232         switch (main_cfg->mpuclk_src) {
 233         case CLKMGR_MAINPLL_MPUCLK_SRC_MAIN:
 234                 clk_hz = cm_calc_handoff_main_vco_clk_hz(main_cfg);
 235                 clk_hz /= (main_cfg->mpuclk & CLKMGR_MAINPLL_MPUCLK_CNT_MSK)
 236                            + 1;
 237                 break;
 238         case CLKMGR_MAINPLL_MPUCLK_SRC_PERI:
 239                 clk_hz = cm_calc_handoff_periph_vco_clk_hz(main_cfg, per_cfg);
 240                 clk_hz /= ((main_cfg->mpuclk >>
 241                            CLKMGR_MAINPLL_MPUCLK_PERICNT_LSB) &
 242                            CLKMGR_MAINPLL_MPUCLK_CNT_MSK) + 1;
 243                 break;
 244         case CLKMGR_MAINPLL_MPUCLK_SRC_OSC1:
 245                 clk_hz = eosc1_hz;
 246                 break;
 247         case CLKMGR_MAINPLL_MPUCLK_SRC_INTOSC:
 248                 clk_hz = cb_intosc_hz;
 249                 break;
 250         case CLKMGR_MAINPLL_MPUCLK_SRC_FPGA:
 251                 clk_hz = f2s_free_hz;
 252                 break;
 253         default:
 254                 return 0;
 255         }
 256
 257         clk_hz /= main_cfg->mpuclk_cnt + 1;
 258         return clk_hz;
 259 }
 260
 261 /* calculate the intended NOC clock frequency based on handoff */
 262 static unsigned int cm_calc_handoff_noc_clk_hz(struct mainpll_cfg *main_cfg,
 263                                                struct perpll_cfg *per_cfg)
 264 {
 265         unsigned int clk_hz;
 266
 267         /* Check MPU clock source: main, periph, osc1, intosc or f2s? */
 268         switch (main_cfg->nocclk_src) {
 269         case CLKMGR_MAINPLL_NOCCLK_SRC_MAIN:
 270                 clk_hz = cm_calc_handoff_main_vco_clk_hz(main_cfg);
 271                 clk_hz /= (main_cfg->nocclk & CLKMGR_MAINPLL_NOCCLK_CNT_MSK)
 272                          + 1;
 273                 break;
 274         case CLKMGR_MAINPLL_NOCCLK_SRC_PERI:
 275                 clk_hz = cm_calc_handoff_periph_vco_clk_hz(main_cfg, per_cfg);
 276                 clk_hz /= ((main_cfg->nocclk >>
 277                            CLKMGR_MAINPLL_NOCCLK_PERICNT_LSB) &
 278                            CLKMGR_MAINPLL_NOCCLK_CNT_MSK) + 1;
 279                 break;
 280         case CLKMGR_MAINPLL_NOCCLK_SRC_OSC1:
 281                 clk_hz = eosc1_hz;
 282                 break;
 283         case CLKMGR_MAINPLL_NOCCLK_SRC_INTOSC:
 284                 clk_hz = cb_intosc_hz;
 285                 break;
 286         case CLKMGR_MAINPLL_NOCCLK_SRC_FPGA:
 287                 clk_hz = f2s_free_hz;
 288                 break;
 289         default:
 290                 return 0;
 291         }
 292
 293         clk_hz /= main_cfg->nocclk_cnt + 1;
 294         return clk_hz;
 295 }
 296
 297 /* return 1 if PLL ramp is required */
 298 static int cm_is_pll_ramp_required(int main0periph1,
 299                                    struct mainpll_cfg *main_cfg,
 300                                    struct perpll_cfg *per_cfg)
 301 {
 302         /* Check for main PLL */
 303         if (main0periph1 == 0) {
 304                 /*
 305                  * PLL ramp is not required if both MPU clock and NOC clock are
 306                  * not sourced from main PLL
 307                  */
 308                 if (main_cfg->mpuclk_src != CLKMGR_MAINPLL_MPUCLK_SRC_MAIN &&
 309                     main_cfg->nocclk_src != CLKMGR_MAINPLL_NOCCLK_SRC_MAIN)
 310                         return 0;
 311
 312                 /*
 313                  * PLL ramp is required if MPU clock is sourced from main PLL
 314                  * and MPU clock is over 900MHz (as advised by HW team)
 315                  */
 316                 if (main_cfg->mpuclk_src == CLKMGR_MAINPLL_MPUCLK_SRC_MAIN &&
 317                     (cm_calc_handoff_mpu_clk_hz(main_cfg, per_cfg) >
 318                      CLKMGR_PLL_RAMP_MPUCLK_THRESHOLD_HZ))
 319                         return 1;
 320
 321                 /*
 322                  * PLL ramp is required if NOC clock is sourced from main PLL
 323                  * and NOC clock is over 300MHz (as advised by HW team)
 324                  */
 325                 if (main_cfg->nocclk_src == CLKMGR_MAINPLL_NOCCLK_SRC_MAIN &&
 326                     (cm_calc_handoff_noc_clk_hz(main_cfg, per_cfg) >
 327                      CLKMGR_PLL_RAMP_NOCCLK_THRESHOLD_HZ))
 328                         return 2;
 329
 330         } else if (main0periph1 == 1) {
 331                 /*
 332                  * PLL ramp is not required if both MPU clock and NOC clock are
 333                  * not sourced from periph PLL
 334                  */
 335                 if (main_cfg->mpuclk_src != CLKMGR_MAINPLL_MPUCLK_SRC_PERI &&
 336                     main_cfg->nocclk_src != CLKMGR_MAINPLL_NOCCLK_SRC_PERI)
 337                         return 0;
 338
 339                 /*
 340                  * PLL ramp is required if MPU clock are source from periph PLL
 341                  * and MPU clock is over 900MHz (as advised by HW team)
 342                  */
 343                 if (main_cfg->mpuclk_src == CLKMGR_MAINPLL_MPUCLK_SRC_PERI &&
 344                     (cm_calc_handoff_mpu_clk_hz(main_cfg, per_cfg) >
 345                      CLKMGR_PLL_RAMP_MPUCLK_THRESHOLD_HZ))
 346                         return 1;
 347
 348                 /*
 349                  * PLL ramp is required if NOC clock are source from periph PLL
 350                  * and NOC clock is over 300MHz (as advised by HW team)
 351                  */
 352                 if (main_cfg->nocclk_src == CLKMGR_MAINPLL_NOCCLK_SRC_PERI &&
 353                     (cm_calc_handoff_noc_clk_hz(main_cfg, per_cfg) >
 354                      CLKMGR_PLL_RAMP_NOCCLK_THRESHOLD_HZ))
 355                         return 2;
 356         }
 357
 358         return 0;
 359 }
 360
 361 static u32 cm_calculate_numer(struct mainpll_cfg *main_cfg,
 362                               struct perpll_cfg *per_cfg,
 363                               u32 safe_hz, u32 clk_hz)
 364 {
 365         u32 cnt;
 366         u32 clk;
 367         u32 shift;
 368         u32 mask;
 369         u32 denom;
 370
 371         if (main_cfg->mpuclk_src == CLKMGR_MAINPLL_MPUCLK_SRC_MAIN) {
 372                 cnt = main_cfg->mpuclk_cnt;
 373                 clk = main_cfg->mpuclk;
 374                 shift = 0;
 375                 mask = CLKMGR_MAINPLL_MPUCLK_CNT_MSK;
 376                 denom = main_cfg->vco1_denom;
 377         } else if (main_cfg->nocclk_src == CLKMGR_MAINPLL_NOCCLK_SRC_MAIN) {
 378                 cnt = main_cfg->nocclk_cnt;
 379                 clk = main_cfg->nocclk;
 380                 shift = 0;
 381                 mask = CLKMGR_MAINPLL_NOCCLK_CNT_MSK;
 382                 denom = main_cfg->vco1_denom;
 383         } else if (main_cfg->mpuclk_src == CLKMGR_MAINPLL_MPUCLK_SRC_PERI) {
 384                 cnt = main_cfg->mpuclk_cnt;
 385                 clk = main_cfg->mpuclk;
 386                 shift = CLKMGR_MAINPLL_MPUCLK_PERICNT_LSB;
 387                 mask = CLKMGR_MAINPLL_MPUCLK_CNT_MSK;
 388                 denom = per_cfg->vco1_denom;
 389         } else if (main_cfg->nocclk_src == CLKMGR_MAINPLL_NOCCLK_SRC_PERI) {
 390                 cnt = main_cfg->nocclk_cnt;
 391                 clk = main_cfg->nocclk;
 392                 shift = CLKMGR_MAINPLL_NOCCLK_PERICNT_LSB;
 393                 mask = CLKMGR_MAINPLL_NOCCLK_CNT_MSK;
 394                 denom = per_cfg->vco1_denom;
 395         } else {
 396                 return 0;
 397         }
 398
 399         return (safe_hz / clk_hz) * (cnt + 1) * (((clk >> shift) & mask) + 1) *
 400                 (1 + denom) - 1;
 401 }
 402
 403 /*
 404  * Calculate the new PLL numerator which is based on existing DTS hand off and
 405  * intended safe frequency (safe_hz). Note that PLL ramp is only modifying the
 406  * numerator while maintaining denominator as denominator will influence the
 407  * jitter condition. Please refer A10 HPS TRM for the jitter guide. Note final
 408  * value for numerator is minus with 1 to cater our register value
 409  * representation.
 410  */
 411 static unsigned int cm_calc_safe_pll_numer(int main0periph1,
 412                                            struct mainpll_cfg *main_cfg,
 413                                            struct perpll_cfg *per_cfg,
 414                                            unsigned int safe_hz)
 415 {
 416         unsigned int clk_hz = 0;
 417
 418         /* Check for main PLL */
 419         if (main0periph1 == 0) {
 420                 /* Check main VCO clock source: eosc, intosc or f2s? */
 421                 switch (main_cfg->vco0_psrc) {
 422                 case CLKMGR_MAINPLL_VCO0_PSRC_EOSC:
 423                         clk_hz = eosc1_hz;
 424                         break;
 425                 case CLKMGR_MAINPLL_VCO0_PSRC_E_INTOSC:
 426                         clk_hz = cb_intosc_hz;
 427                         break;
 428                 case CLKMGR_MAINPLL_VCO0_PSRC_F2S:
 429                         clk_hz = f2s_free_hz;
 430                         break;
 431                 default:
 432                         return 0;
 433                 }
 434         } else if (main0periph1 == 1) {
 435                 /* Check periph VCO clock source: eosc, intosc, f2s, mainpll */
 436                 switch (per_cfg->vco0_psrc) {
 437                 case CLKMGR_PERPLL_VCO0_PSRC_EOSC:
 438                         clk_hz = eosc1_hz;
 439                         break;
 440                 case CLKMGR_PERPLL_VCO0_PSRC_E_INTOSC:
 441                         clk_hz = cb_intosc_hz;
 442                         break;
 443                 case CLKMGR_PERPLL_VCO0_PSRC_F2S:
 444                         clk_hz = f2s_free_hz;
 445                         break;
 446                 case CLKMGR_PERPLL_VCO0_PSRC_MAIN:
 447                         clk_hz = cm_calc_handoff_main_vco_clk_hz(main_cfg);
 448                         clk_hz /= main_cfg->cntr15clk_cnt;
 449                         break;
 450                 default:
 451                         return 0;
 452                 }
 453         } else {
 454                 return 0;
 455         }
 456
 457         return cm_calculate_numer(main_cfg, per_cfg, safe_hz, clk_hz);
 458 }
 459
 460 /* ramping the main PLL to final value */
 461 static void cm_pll_ramp_main(struct mainpll_cfg *main_cfg,
 462                              struct perpll_cfg *per_cfg,
 463                              unsigned int pll_ramp_main_hz)
 464 {
 465         unsigned int clk_hz = 0, clk_incr_hz = 0, clk_final_hz = 0;
 466
 467         /* find out the increment value */
 468         if (main_cfg->mpuclk_src == CLKMGR_MAINPLL_MPUCLK_SRC_MAIN) {
 469                 clk_incr_hz = CLKMGR_PLL_RAMP_MPUCLK_INCREMENT_HZ;
 470                 clk_final_hz = cm_calc_handoff_mpu_clk_hz(main_cfg, per_cfg);
 471         } else if (main_cfg->nocclk_src == CLKMGR_MAINPLL_NOCCLK_SRC_MAIN) {
 472                 clk_incr_hz = CLKMGR_PLL_RAMP_NOCCLK_INCREMENT_HZ;
 473                 clk_final_hz = cm_calc_handoff_noc_clk_hz(main_cfg, per_cfg);
 474         }
 475
 476         /* execute the ramping here */
 477         for (clk_hz = pll_ramp_main_hz + clk_incr_hz;
 478              clk_hz < clk_final_hz; clk_hz += clk_incr_hz) {
 479                 writel((main_cfg->vco1_denom <<
 480                         CLKMGR_MAINPLL_VCO1_DENOM_LSB) |
 481                         cm_calc_safe_pll_numer(0, main_cfg, per_cfg, clk_hz),
 482                         &clock_manager_base->main_pll.vco1);
 483                 mdelay(1);
 484                 cm_wait_for_lock(LOCKED_MASK);
 485         }
 486         writel((main_cfg->vco1_denom << CLKMGR_MAINPLL_VCO1_DENOM_LSB) |
 487                 main_cfg->vco1_numer, &clock_manager_base->main_pll.vco1);
 488         mdelay(1);
 489         cm_wait_for_lock(LOCKED_MASK);
 490 }
 491
 492 /* ramping the periph PLL to final value */
 493 static void cm_pll_ramp_periph(struct mainpll_cfg *main_cfg,
 494                                struct perpll_cfg *per_cfg,
 495                                unsigned int pll_ramp_periph_hz)
 496 {
 497         unsigned int clk_hz = 0, clk_incr_hz = 0, clk_final_hz = 0;
 498
 499         /* find out the increment value */
 500         if (main_cfg->mpuclk_src == CLKMGR_MAINPLL_MPUCLK_SRC_PERI) {
 501                 clk_incr_hz = CLKMGR_PLL_RAMP_MPUCLK_INCREMENT_HZ;
 502                 clk_final_hz = cm_calc_handoff_mpu_clk_hz(main_cfg, per_cfg);
 503         } else if (main_cfg->nocclk_src == CLKMGR_MAINPLL_NOCCLK_SRC_PERI) {
 504                 clk_incr_hz = CLKMGR_PLL_RAMP_NOCCLK_INCREMENT_HZ;
 505                 clk_final_hz = cm_calc_handoff_noc_clk_hz(main_cfg, per_cfg);
 506         }
 507         /* execute the ramping here */
 508         for (clk_hz = pll_ramp_periph_hz + clk_incr_hz;
 509              clk_hz < clk_final_hz; clk_hz += clk_incr_hz) {
 510                 writel((per_cfg->vco1_denom << CLKMGR_PERPLL_VCO1_DENOM_LSB) |
 511                         cm_calc_safe_pll_numer(1, main_cfg, per_cfg, clk_hz),
 512                         &clock_manager_base->per_pll.vco1);
 513                 mdelay(1);
 514                 cm_wait_for_lock(LOCKED_MASK);
 515         }
 516         writel((per_cfg->vco1_denom << CLKMGR_PERPLL_VCO1_DENOM_LSB) |
 517                 per_cfg->vco1_numer, &clock_manager_base->per_pll.vco1);
 518         mdelay(1);
 519         cm_wait_for_lock(LOCKED_MASK);
 520 }
 521
 522 /*
 523  * Setup clocks while making no assumptions of the
 524  * previous state of the clocks.
 525  *
 526  * Start by being paranoid and gate all sw managed clocks
 527  *
 528  * Put all plls in bypass
 529  *
 530  * Put all plls VCO registers back to reset value (bgpwr dwn).
 531  *
 532  * Put peripheral and main pll src to reset value to avoid glitch.
 533  *
 534  * Delay 5 us.
 535  *
 536  * Deassert bg pwr dn and set numerator and denominator
 537  *
 538  * Start 7 us timer.
 539  *
 540  * set internal dividers
 541  *
 542  * Wait for 7 us timer.
 543  *
 544  * Enable plls
 545  *
 546  * Set external dividers while plls are locking
 547  *
 548  * Wait for pll lock
 549  *
 550  * Assert/deassert outreset all.
 551  *
 552  * Take all pll's out of bypass
 553  *
 554  * Clear safe mode
 555  *
 556  * set source main and peripheral clocks
 557  *
 558  * Ungate clocks
 559  */
 560
 561 static int cm_full_cfg(struct mainpll_cfg *main_cfg, struct perpll_cfg *per_cfg)
 562 {
 563         unsigned int pll_ramp_main_hz = 0, pll_ramp_periph_hz = 0,
 564                 ramp_required;
 565
 566         /* gate off all mainpll clock excpet HW managed clock */
 567         writel(CLKMGR_MAINPLL_EN_S2FUSER0CLKEN_SET_MSK |
 568                 CLKMGR_MAINPLL_EN_HMCPLLREFCLKEN_SET_MSK,
 569                 &clock_manager_base->main_pll.enr);
 570
 571         /* now we can gate off the rest of the peripheral clocks */
 572         writel(0, &clock_manager_base->per_pll.en);
 573
 574         /* Put all plls in external bypass */
 575         writel(CLKMGR_MAINPLL_BYPASS_RESET,
 576                &clock_manager_base->main_pll.bypasss);
 577         writel(CLKMGR_PERPLL_BYPASS_RESET,
 578                &clock_manager_base->per_pll.bypasss);
 579
 580         /*
 581          * Put all plls VCO registers back to reset value.
 582          * Some code might have messed with them. At same time set the
 583          * desired clock source
 584          */
 585         writel(CLKMGR_MAINPLL_VCO0_RESET |
 586                CLKMGR_MAINPLL_VCO0_REGEXTSEL_SET_MSK |
 587                (main_cfg->vco0_psrc << CLKMGR_MAINPLL_VCO0_PSRC_LSB),
 588                &clock_manager_base->main_pll.vco0);
 589
 590         writel(CLKMGR_PERPLL_VCO0_RESET |
 591                CLKMGR_PERPLL_VCO0_REGEXTSEL_SET_MSK |
 592                (per_cfg->vco0_psrc << CLKMGR_PERPLL_VCO0_PSRC_LSB),
 593                &clock_manager_base->per_pll.vco0);
 594
 595         writel(CLKMGR_MAINPLL_VCO1_RESET, &clock_manager_base->main_pll.vco1);
 596         writel(CLKMGR_PERPLL_VCO1_RESET, &clock_manager_base->per_pll.vco1);
 597
 598         /* clear the interrupt register status register */
 599         writel(CLKMGR_CLKMGR_INTR_MAINPLLLOST_SET_MSK |
 600                 CLKMGR_CLKMGR_INTR_PERPLLLOST_SET_MSK |
 601                 CLKMGR_CLKMGR_INTR_MAINPLLRFSLIP_SET_MSK |
 602                 CLKMGR_CLKMGR_INTR_PERPLLRFSLIP_SET_MSK |
 603                 CLKMGR_CLKMGR_INTR_MAINPLLFBSLIP_SET_MSK |
 604                 CLKMGR_CLKMGR_INTR_PERPLLFBSLIP_SET_MSK |
 605                 CLKMGR_CLKMGR_INTR_MAINPLLACHIEVED_SET_MSK |
 606                 CLKMGR_CLKMGR_INTR_PERPLLACHIEVED_SET_MSK,
 607                 &clock_manager_base->intr);
 608
 609         /* Program VCO Numerator and Denominator for main PLL */
 610         ramp_required = cm_is_pll_ramp_required(0, main_cfg, per_cfg);
 611         if (ramp_required) {
 612                 /* set main PLL to safe starting threshold frequency */
 613                 if (ramp_required == 1)
 614                         pll_ramp_main_hz = CLKMGR_PLL_RAMP_MPUCLK_THRESHOLD_HZ;
 615                 else if (ramp_required == 2)
 616                         pll_ramp_main_hz = CLKMGR_PLL_RAMP_NOCCLK_THRESHOLD_HZ;
 617
 618                 writel((main_cfg->vco1_denom << CLKMGR_MAINPLL_VCO1_DENOM_LSB) |
 619                         cm_calc_safe_pll_numer(0, main_cfg, per_cfg,
 620                                                pll_ramp_main_hz),
 621                         &clock_manager_base->main_pll.vco1);
 622         } else
 623                 writel((main_cfg->vco1_denom << CLKMGR_MAINPLL_VCO1_DENOM_LSB) |
 624                         main_cfg->vco1_numer,
 625                         &clock_manager_base->main_pll.vco1);
 626
 627         /* Program VCO Numerator and Denominator for periph PLL */
 628         ramp_required = cm_is_pll_ramp_required(1, main_cfg, per_cfg);
 629         if (ramp_required) {
 630                 /* set periph PLL to safe starting threshold frequency */
 631                 if (ramp_required == 1)
 632                         pll_ramp_periph_hz =
 633                                 CLKMGR_PLL_RAMP_MPUCLK_THRESHOLD_HZ;
 634                 else if (ramp_required == 2)
 635                         pll_ramp_periph_hz =
 636                                 CLKMGR_PLL_RAMP_NOCCLK_THRESHOLD_HZ;
 637
 638                 writel((per_cfg->vco1_denom << CLKMGR_PERPLL_VCO1_DENOM_LSB) |
 639                         cm_calc_safe_pll_numer(1, main_cfg, per_cfg,
 640                                                pll_ramp_periph_hz),
 641                         &clock_manager_base->per_pll.vco1);
 642         } else
 643                 writel((per_cfg->vco1_denom << CLKMGR_PERPLL_VCO1_DENOM_LSB) |
 644                         per_cfg->vco1_numer,
 645                         &clock_manager_base->per_pll.vco1);
 646
 647         /* Wait for at least 5 us */
 648         udelay(5);
 649
 650         /* Now deassert BGPWRDN and PWRDN */
 651         clrbits_le32(&clock_manager_base->main_pll.vco0,
 652                      CLKMGR_MAINPLL_VCO0_BGPWRDN_SET_MSK |
 653                      CLKMGR_MAINPLL_VCO0_PWRDN_SET_MSK);
 654         clrbits_le32(&clock_manager_base->per_pll.vco0,
 655                      CLKMGR_PERPLL_VCO0_BGPWRDN_SET_MSK |
 656                      CLKMGR_PERPLL_VCO0_PWRDN_SET_MSK);
 657
 658         /* Wait for at least 7 us */
 659         udelay(7);
 660
 661         /* enable the VCO and disable the external regulator to PLL */
 662         writel((readl(&clock_manager_base->main_pll.vco0) &
 663                 ~CLKMGR_MAINPLL_VCO0_REGEXTSEL_SET_MSK) |
 664                 CLKMGR_MAINPLL_VCO0_EN_SET_MSK,
 665                 &clock_manager_base->main_pll.vco0);
 666         writel((readl(&clock_manager_base->per_pll.vco0) &
 667                 ~CLKMGR_PERPLL_VCO0_REGEXTSEL_SET_MSK) |
 668                 CLKMGR_PERPLL_VCO0_EN_SET_MSK,
 669                 &clock_manager_base->per_pll.vco0);
 670
 671         /* setup all the main PLL counter and clock source */
 672         writel(main_cfg->nocclk,
 673                SOCFPGA_CLKMGR_ADDRESS + CLKMGR_MAINPLL_NOC_CLK_OFFSET);
 674         writel(main_cfg->mpuclk,
 675                SOCFPGA_CLKMGR_ADDRESS + CLKMGR_ALTERAGRP_MPU_CLK_OFFSET);
 676
 677         /* main_emaca_clk divider */
 678         writel(main_cfg->cntr2clk_cnt, &clock_manager_base->main_pll.cntr2clk);
 679         /* main_emacb_clk divider */
 680         writel(main_cfg->cntr3clk_cnt, &clock_manager_base->main_pll.cntr3clk);
 681         /* main_emac_ptp_clk divider */
 682         writel(main_cfg->cntr4clk_cnt, &clock_manager_base->main_pll.cntr4clk);
 683         /* main_gpio_db_clk divider */
 684         writel(main_cfg->cntr5clk_cnt, &clock_manager_base->main_pll.cntr5clk);
 685         /* main_sdmmc_clk divider */
 686         writel(main_cfg->cntr6clk_cnt, &clock_manager_base->main_pll.cntr6clk);
 687         /* main_s2f_user0_clk divider */
 688         writel(main_cfg->cntr7clk_cnt |
 689                (main_cfg->cntr7clk_src << CLKMGR_MAINPLL_CNTR7CLK_SRC_LSB),
 690                &clock_manager_base->main_pll.cntr7clk);
 691         /* main_s2f_user1_clk divider */
 692         writel(main_cfg->cntr8clk_cnt, &clock_manager_base->main_pll.cntr8clk);
 693         /* main_hmc_pll_clk divider */
 694         writel(main_cfg->cntr9clk_cnt |
 695                (main_cfg->cntr9clk_src << CLKMGR_MAINPLL_CNTR9CLK_SRC_LSB),
 696                &clock_manager_base->main_pll.cntr9clk);
 697         /* main_periph_ref_clk divider */
 698         writel(main_cfg->cntr15clk_cnt,
 699                &clock_manager_base->main_pll.cntr15clk);
 700
 701         /* setup all the peripheral PLL counter and clock source */
 702         /* peri_emaca_clk divider */
 703         writel(per_cfg->cntr2clk_cnt |
 704                (per_cfg->cntr2clk_src << CLKMGR_PERPLL_CNTR2CLK_SRC_LSB),
 705                &clock_manager_base->per_pll.cntr2clk);
 706         /* peri_emacb_clk divider */
 707         writel(per_cfg->cntr3clk_cnt |
 708                (per_cfg->cntr3clk_src << CLKMGR_PERPLL_CNTR3CLK_SRC_LSB),
 709                &clock_manager_base->per_pll.cntr3clk);
 710         /* peri_emac_ptp_clk divider */
 711         writel(per_cfg->cntr4clk_cnt |
 712                (per_cfg->cntr4clk_src << CLKMGR_PERPLL_CNTR4CLK_SRC_LSB),
 713                &clock_manager_base->per_pll.cntr4clk);
 714         /* peri_gpio_db_clk divider */
 715         writel(per_cfg->cntr5clk_cnt |
 716                (per_cfg->cntr5clk_src << CLKMGR_PERPLL_CNTR5CLK_SRC_LSB),
 717                &clock_manager_base->per_pll.cntr5clk);
 718         /* peri_sdmmc_clk divider */
 719         writel(per_cfg->cntr6clk_cnt |
 720                (per_cfg->cntr6clk_src << CLKMGR_PERPLL_CNTR6CLK_SRC_LSB),
 721                &clock_manager_base->per_pll.cntr6clk);
 722         /* peri_s2f_user0_clk divider */
 723         writel(per_cfg->cntr7clk_cnt, &clock_manager_base->per_pll.cntr7clk);
 724         /* peri_s2f_user1_clk divider */
 725         writel(per_cfg->cntr8clk_cnt |
 726                (per_cfg->cntr8clk_src << CLKMGR_PERPLL_CNTR8CLK_SRC_LSB),
 727                &clock_manager_base->per_pll.cntr8clk);
 728         /* peri_hmc_pll_clk divider */
 729         writel(per_cfg->cntr9clk_cnt, &clock_manager_base->per_pll.cntr9clk);
 730
 731         /* setup all the external PLL counter */
 732         /* mpu wrapper / external divider */
 733         writel(main_cfg->mpuclk_cnt |
 734                (main_cfg->mpuclk_src << CLKMGR_MAINPLL_MPUCLK_SRC_LSB),
 735                &clock_manager_base->main_pll.mpuclk);
 736         /* NOC wrapper / external divider */
 737         writel(main_cfg->nocclk_cnt |
 738                (main_cfg->nocclk_src << CLKMGR_MAINPLL_NOCCLK_SRC_LSB),
 739                &clock_manager_base->main_pll.nocclk);
 740         /* NOC subclock divider such as l4 */
 741         writel(main_cfg->nocdiv_l4mainclk |
 742                (main_cfg->nocdiv_l4mpclk <<
 743                 CLKMGR_MAINPLL_NOCDIV_L4MPCLK_LSB) |
 744                (main_cfg->nocdiv_l4spclk <<
 745                 CLKMGR_MAINPLL_NOCDIV_L4SPCLK_LSB) |
 746                (main_cfg->nocdiv_csatclk <<
 747                 CLKMGR_MAINPLL_NOCDIV_CSATCLK_LSB) |
 748                (main_cfg->nocdiv_cstraceclk <<
 749                 CLKMGR_MAINPLL_NOCDIV_CSTRACECLK_LSB) |
 750                (main_cfg->nocdiv_cspdbclk <<
 751                 CLKMGR_MAINPLL_NOCDIV_CSPDBGCLK_LSB),
 752                 &clock_manager_base->main_pll.nocdiv);
 753         /* gpio_db external divider */
 754         writel(per_cfg->gpiodiv_gpiodbclk,
 755                &clock_manager_base->per_pll.gpiodiv);
 756
 757         /* setup the EMAC clock mux select */
 758         writel((per_cfg->emacctl_emac0sel <<
 759                 CLKMGR_PERPLL_EMACCTL_EMAC0SEL_LSB) |
 760                (per_cfg->emacctl_emac1sel <<
 761                 CLKMGR_PERPLL_EMACCTL_EMAC1SEL_LSB) |
 762                (per_cfg->emacctl_emac2sel <<
 763                 CLKMGR_PERPLL_EMACCTL_EMAC2SEL_LSB),
 764                &clock_manager_base->per_pll.emacctl);
 765
 766         /* at this stage, check for PLL lock status */
 767         cm_wait_for_lock(LOCKED_MASK);
 768
 769         /*
 770          * after locking, but before taking out of bypass,
 771          * assert/deassert outresetall
 772          */
 773         /* assert mainpll outresetall */
 774         setbits_le32(&clock_manager_base->main_pll.vco0,
 775                      CLKMGR_MAINPLL_VCO0_OUTRSTALL_SET_MSK);
 776         /* assert perpll outresetall */
 777         setbits_le32(&clock_manager_base->per_pll.vco0,
 778                      CLKMGR_PERPLL_VCO0_OUTRSTALL_SET_MSK);
 779         /* de-assert mainpll outresetall */
 780         clrbits_le32(&clock_manager_base->main_pll.vco0,
 781                      CLKMGR_MAINPLL_VCO0_OUTRSTALL_SET_MSK);
 782         /* de-assert perpll outresetall */
 783         clrbits_le32(&clock_manager_base->per_pll.vco0,
 784                      CLKMGR_PERPLL_VCO0_OUTRSTALL_SET_MSK);
 785
 786         /* Take all PLLs out of bypass when boot mode is cleared. */
 787         /* release mainpll from bypass */
 788         writel(CLKMGR_MAINPLL_BYPASS_RESET,
 789                &clock_manager_base->main_pll.bypassr);
 790         /* wait till Clock Manager is not busy */
 791         cm_wait_for_fsm();
 792
 793         /* release perpll from bypass */
 794         writel(CLKMGR_PERPLL_BYPASS_RESET,
 795                &clock_manager_base->per_pll.bypassr);
 796         /* wait till Clock Manager is not busy */
 797         cm_wait_for_fsm();
 798
 799         /* clear boot mode */
 800         clrbits_le32(&clock_manager_base->ctrl,
 801                      CLKMGR_CLKMGR_CTL_BOOTMOD_SET_MSK);
 802         /* wait till Clock Manager is not busy */
 803         cm_wait_for_fsm();
 804
 805         /* At here, we need to ramp to final value if needed */
 806         if (pll_ramp_main_hz != 0)
 807                 cm_pll_ramp_main(main_cfg, per_cfg, pll_ramp_main_hz);
 808         if (pll_ramp_periph_hz != 0)
 809                 cm_pll_ramp_periph(main_cfg, per_cfg, pll_ramp_periph_hz);
 810
 811         /* Now ungate non-hw-managed clocks */
 812         writel(CLKMGR_MAINPLL_EN_S2FUSER0CLKEN_SET_MSK |
 813                 CLKMGR_MAINPLL_EN_HMCPLLREFCLKEN_SET_MSK,
 814                 &clock_manager_base->main_pll.ens);
 815         writel(CLKMGR_PERPLL_EN_RESET, &clock_manager_base->per_pll.ens);
 816
 817         /* Clear the loss lock and slip bits as they might set during
 818         clock reconfiguration */
 819         writel(CLKMGR_CLKMGR_INTR_MAINPLLLOST_SET_MSK |
 820                CLKMGR_CLKMGR_INTR_PERPLLLOST_SET_MSK |
 821                CLKMGR_CLKMGR_INTR_MAINPLLRFSLIP_SET_MSK |
 822                CLKMGR_CLKMGR_INTR_PERPLLRFSLIP_SET_MSK |
 823                CLKMGR_CLKMGR_INTR_MAINPLLFBSLIP_SET_MSK |
 824                CLKMGR_CLKMGR_INTR_PERPLLFBSLIP_SET_MSK,
 825                &clock_manager_base->intr);
 826
 827         return 0;
 828 }
 829
 830 void cm_use_intosc(void)
 831 {
 832         setbits_le32(&clock_manager_base->ctrl,
 833                      CLKMGR_CLKMGR_CTL_BOOTCLK_INTOSC_SET_MSK);
 834 }
 835
 836 unsigned int cm_get_noc_clk_hz(void)
 837 {
 838         unsigned int clk_src, divisor, nocclk, src_hz;
 839
 840         nocclk = readl(&clock_manager_base->main_pll.nocclk);
 841         clk_src = (nocclk >> CLKMGR_MAINPLL_NOCCLK_SRC_LSB) &
 842                   CLKMGR_MAINPLL_NOCCLK_SRC_MSK;
 843
 844         divisor = 1 + (nocclk & CLKMGR_MAINPLL_NOCDIV_MSK);
 845
 846         if (clk_src == CLKMGR_PERPLLGRP_SRC_MAIN) {
 847                 src_hz = cm_get_main_vco_clk_hz();
 848                 src_hz /= 1 +
 849                 (readl(SOCFPGA_CLKMGR_ADDRESS + CLKMGR_MAINPLL_NOC_CLK_OFFSET) &
 850                 CLKMGR_MAINPLL_NOCCLK_CNT_MSK);
 851         } else if (clk_src == CLKMGR_PERPLLGRP_SRC_PERI) {
 852                 src_hz = cm_get_per_vco_clk_hz();
 853                 src_hz /= 1 +
 854                 ((readl(SOCFPGA_CLKMGR_ADDRESS +
 855                         CLKMGR_MAINPLL_NOC_CLK_OFFSET) >>
 856                         CLKMGR_MAINPLL_NOCCLK_PERICNT_LSB) &
 857                         CLKMGR_MAINPLL_NOCCLK_CNT_MSK);
 858         } else if (clk_src == CLKMGR_PERPLLGRP_SRC_OSC1) {
 859                 src_hz = eosc1_hz;
 860         } else if (clk_src == CLKMGR_PERPLLGRP_SRC_INTOSC) {
 861                 src_hz = cb_intosc_hz;
 862         } else if (clk_src == CLKMGR_PERPLLGRP_SRC_FPGA) {
 863                 src_hz = f2s_free_hz;
 864         } else {
 865                 src_hz = 0;
 866         }
 867
 868         return src_hz / divisor;
 869 }
 870
 871 unsigned int cm_get_l4_noc_hz(unsigned int nocdivshift)
 872 {
 873         unsigned int divisor2 = 1 <<
 874                 ((readl(&clock_manager_base->main_pll.nocdiv) >>
 875                         nocdivshift) & CLKMGR_MAINPLL_NOCDIV_MSK);
 876
 877         return cm_get_noc_clk_hz() / divisor2;
 878 }
 879
 880 int cm_basic_init(const void *blob)
 881 {
 882         struct mainpll_cfg main_cfg;
 883         struct perpll_cfg per_cfg;
 884         struct alteragrp_cfg altrgrp_cfg;
 885         int rval;
 886
 887         /* initialize to zero for use case of optional node */
 888         memset(&main_cfg, 0, sizeof(main_cfg));
 889         memset(&per_cfg, 0, sizeof(per_cfg));
 890         memset(&altrgrp_cfg, 0, sizeof(altrgrp_cfg));
 891
 892         rval = of_get_clk_cfg(blob, &main_cfg, &per_cfg, &altrgrp_cfg);
 893         if (rval)
 894                 return rval;
 895
 896         rval =  cm_full_cfg(&main_cfg, &per_cfg);
 897
 898         cm_l4_main_clk_hz =
 899                 cm_get_l4_noc_hz(CLKMGR_MAINPLL_NOCDIV_L4MAINCLK_LSB);
 900
 901         cm_l4_mp_clk_hz = cm_get_l4_noc_hz(CLKMGR_MAINPLL_NOCDIV_L4MPCLK_LSB);
 902
 903         cm_l4_sp_clk_hz = cm_get_l4_sp_clk_hz();
 904
 905         cm_l4_sys_free_clk_hz = cm_get_noc_clk_hz() / 4;
 906
 907         return rval;
 908 }
 909
 910 unsigned long cm_get_mpu_clk_hz(void)
 911 {
 912         u32 reg, clk_hz;
 913         u32 clk_src, mainmpuclk_reg;
 914
 915         mainmpuclk_reg = readl(&clock_manager_base->main_pll.mpuclk);
 916
 917         clk_src = (mainmpuclk_reg >> CLKMGR_MAINPLL_MPUCLK_SRC_LSB) &
 918                 CLKMGR_MAINPLL_MPUCLK_SRC_MSK;
 919
 920         reg = readl(&clock_manager_base->altera.mpuclk);
 921         /* Check MPU clock source: main, periph, osc1, intosc or f2s? */
 922         switch (clk_src) {
 923         case CLKMGR_MAINPLL_MPUCLK_SRC_MAIN:
 924                 clk_hz = cm_get_main_vco_clk_hz();
 925                 clk_hz /= (reg & CLKMGR_MAINPLL_MPUCLK_CNT_MSK) + 1;
 926                 break;
 927         case CLKMGR_MAINPLL_MPUCLK_SRC_PERI:
 928                 clk_hz = cm_get_per_vco_clk_hz();
 929                 clk_hz /= (((reg >> CLKMGR_MAINPLL_MPUCLK_PERICNT_LSB) &
 930                            CLKMGR_MAINPLL_MPUCLK_CNT_MSK) + 1);
 931                 break;
 932         case CLKMGR_MAINPLL_MPUCLK_SRC_OSC1:
 933                 clk_hz = eosc1_hz;
 934                 break;
 935         case CLKMGR_MAINPLL_MPUCLK_SRC_INTOSC:
 936                 clk_hz = cb_intosc_hz;
 937                 break;
 938         case CLKMGR_MAINPLL_MPUCLK_SRC_FPGA:
 939                 clk_hz = f2s_free_hz;
 940                 break;
 941         default:
 942                 printf("cm_get_mpu_clk_hz invalid clk_src %d\n", clk_src);
 943                 return 0;
 944         }
 945
 946         clk_hz /= (mainmpuclk_reg & CLKMGR_MAINPLL_MPUCLK_CNT_MSK) + 1;
 947
 948         return clk_hz;
 949 }
 950
 951 unsigned int cm_get_per_vco_clk_hz(void)
 952 {
 953         u32 src_hz = 0;
 954         u32 clk_src = 0;
 955         u32 numer = 0;
 956         u32 denom = 0;
 957         u32 vco = 0;
 958
 959         clk_src = readl(&clock_manager_base->per_pll.vco0);
 960
 961         clk_src = (clk_src >> CLKMGR_PERPLL_VCO0_PSRC_LSB) &
 962                 CLKMGR_PERPLL_VCO0_PSRC_MSK;
 963
 964         if (clk_src == CLKMGR_PERPLL_VCO0_PSRC_EOSC) {
 965                 src_hz = eosc1_hz;
 966         } else if (clk_src == CLKMGR_PERPLL_VCO0_PSRC_E_INTOSC) {
 967                 src_hz = cb_intosc_hz;
 968         } else if (clk_src == CLKMGR_PERPLL_VCO0_PSRC_F2S) {
 969                 src_hz = f2s_free_hz;
 970         } else if (clk_src == CLKMGR_PERPLL_VCO0_PSRC_MAIN) {
 971                 src_hz = cm_get_main_vco_clk_hz();
 972                 src_hz /= (readl(&clock_manager_base->main_pll.cntr15clk) &
 973                         CLKMGR_MAINPLL_CNTRCLK_MSK) + 1;
 974         } else {
 975                 printf("cm_get_per_vco_clk_hz invalid clk_src %d\n", clk_src);
 976                 return 0;
 977         }
 978
 979         vco = readl(&clock_manager_base->per_pll.vco1);
 980
 981         numer = vco & CLKMGR_PERPLL_VCO1_NUMER_MSK;
 982
 983         denom = (vco >> CLKMGR_PERPLL_VCO1_DENOM_LSB) &
 984                         CLKMGR_PERPLL_VCO1_DENOM_MSK;
 985
 986         vco = src_hz;
 987         vco /= 1 + denom;
 988         vco *= 1 + numer;
 989
 990         return vco;
 991 }
 992
 993 unsigned int cm_get_main_vco_clk_hz(void)
 994 {
 995         u32 src_hz, numer, denom, vco;
 996
 997         u32 clk_src = readl(&clock_manager_base->main_pll.vco0);
 998
 999         clk_src = (clk_src >> CLKMGR_MAINPLL_VCO0_PSRC_LSB) &
1000                 CLKMGR_MAINPLL_VCO0_PSRC_MSK;
1001
1002         if (clk_src == CLKMGR_MAINPLL_VCO0_PSRC_EOSC) {
1003                 src_hz = eosc1_hz;
1004         } else if (clk_src == CLKMGR_MAINPLL_VCO0_PSRC_E_INTOSC) {
1005                 src_hz = cb_intosc_hz;
1006         } else if (clk_src == CLKMGR_MAINPLL_VCO0_PSRC_F2S) {
1007                 src_hz = f2s_free_hz;
1008         } else {
1009                 printf("cm_get_main_vco_clk_hz invalid clk_src %d\n", clk_src);
1010                 return 0;
1011         }
1012
1013         vco = readl(&clock_manager_base->main_pll.vco1);
1014
1015         numer = vco & CLKMGR_MAINPLL_VCO1_NUMER_MSK;
1016
1017         denom = (vco >> CLKMGR_MAINPLL_VCO1_DENOM_LSB) &
1018                         CLKMGR_MAINPLL_VCO1_DENOM_MSK;
1019
1020         vco = src_hz;
1021         vco /= 1 + denom;
1022         vco *= 1 + numer;
1023
1024         return vco;
1025 }
1026
1027 unsigned int cm_get_l4_sp_clk_hz(void)
1028 {
1029         return cm_get_l4_noc_hz(CLKMGR_MAINPLL_NOCDIV_L4SPCLK_LSB);
1030 }
1031
1032 unsigned int cm_get_mmc_controller_clk_hz(void)
1033 {
1034         u32 clk_hz = 0;
1035         u32 clk_input = 0;
1036
1037         clk_input = readl(&clock_manager_base->per_pll.cntr6clk);
1038         clk_input = (clk_input >> CLKMGR_PERPLL_CNTR6CLK_SRC_LSB) &
1039                 CLKMGR_PERPLLGRP_SRC_MSK;
1040
1041         switch (clk_input) {
1042         case CLKMGR_PERPLLGRP_SRC_MAIN:
1043                 clk_hz = cm_get_main_vco_clk_hz();
1044                 clk_hz /= 1 + (readl(&clock_manager_base->main_pll.cntr6clk) &
1045                         CLKMGR_MAINPLL_CNTRCLK_MSK);
1046                 break;
1047
1048         case CLKMGR_PERPLLGRP_SRC_PERI:
1049                 clk_hz = cm_get_per_vco_clk_hz();
1050                 clk_hz /= 1 + (readl(&clock_manager_base->per_pll.cntr6clk) &
1051                         CLKMGR_PERPLL_CNTRCLK_MSK);
1052                 break;
1053
1054         case CLKMGR_PERPLLGRP_SRC_OSC1:
1055                 clk_hz = eosc1_hz;
1056                 break;
1057
1058         case CLKMGR_PERPLLGRP_SRC_INTOSC:
1059                 clk_hz = cb_intosc_hz;
1060                 break;
1061
1062         case CLKMGR_PERPLLGRP_SRC_FPGA:
1063                 clk_hz = f2s_free_hz;
1064                 break;
1065         }
1066
1067         return clk_hz / 4;
1068 }
1069
1070 unsigned int cm_get_spi_controller_clk_hz(void)
1071 {
1072         return cm_get_l4_noc_hz(CLKMGR_MAINPLL_NOCDIV_L4MPCLK_LSB);
1073 }
1074
1075 unsigned int cm_get_qspi_controller_clk_hz(void)
1076 {
1077         return  cm_get_l4_noc_hz(CLKMGR_MAINPLL_NOCDIV_L4MAINCLK_LSB);
1078 }
1079
1080 /* Override weak dw_spi_get_clk implementation in designware_spi.c driver */
1081 int dw_spi_get_clk(struct udevice *bus, ulong *rate)
1082 {
1083         *rate = cm_get_spi_controller_clk_hz();
1084
1085         return 0;
1086 }
1087
1088 void cm_print_clock_quick_summary(void)
1089 {
1090         printf("MPU       %10ld kHz\n", cm_get_mpu_clk_hz() / 1000);
1091         printf("MMC         %8d kHz\n", cm_get_mmc_controller_clk_hz() / 1000);
1092         printf("QSPI        %8d kHz\n", cm_get_qspi_controller_clk_hz() / 1000);
1093         printf("SPI         %8d kHz\n", cm_get_spi_controller_clk_hz() / 1000);
1094         printf("EOSC1       %8d kHz\n", eosc1_hz / 1000);
1095         printf("cb_intosc   %8d kHz\n", cb_intosc_hz / 1000);
1096         printf("f2s_free    %8d kHz\n", f2s_free_hz / 1000);
1097         printf("Main VCO    %8d kHz\n", cm_get_main_vco_clk_hz() / 1000);
1098         printf("NOC         %8d kHz\n", cm_get_noc_clk_hz() / 1000);
1099         printf("L4 Main     %8d kHz\n",
1100                cm_get_l4_noc_hz(CLKMGR_MAINPLL_NOCDIV_L4MAINCLK_LSB) / 1000);
1101         printf("L4 MP       %8d kHz\n",
1102                cm_get_l4_noc_hz(CLKMGR_MAINPLL_NOCDIV_L4MPCLK_LSB) / 1000);
1103         printf("L4 SP       %8d kHz\n", cm_get_l4_sp_clk_hz() / 1000);
1104         printf("L4 sys free %8d kHz\n", cm_l4_sys_free_clk_hz / 1000);
1105 }