drivers/clk/x86/clk-cgu.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Copyright (C) 2020 Intel Corporation.
   4  * Zhu YiXin <[email protected]>
   5  * Rahul Tanwar <[email protected]>
   6  */
   7 #include <linux/clk-provider.h>
   8 #include <linux/device.h>
   9 #include <linux/of.h>
  10
  11 #include "clk-cgu.h"
  12
  13 #define GATE_HW_REG_STAT(reg)   ((reg) + 0x0)
  14 #define GATE_HW_REG_EN(reg)     ((reg) + 0x4)
  15 #define GATE_HW_REG_DIS(reg)    ((reg) + 0x8)
  16 #define MAX_DDIV_REG    8
  17 #define MAX_DIVIDER_VAL 64
  18
  19 #define to_lgm_clk_mux(_hw) container_of(_hw, struct lgm_clk_mux, hw)
  20 #define to_lgm_clk_divider(_hw) container_of(_hw, struct lgm_clk_divider, hw)
  21 #define to_lgm_clk_gate(_hw) container_of(_hw, struct lgm_clk_gate, hw)
  22 #define to_lgm_clk_ddiv(_hw) container_of(_hw, struct lgm_clk_ddiv, hw)
  23
  24 static struct clk_hw *lgm_clk_register_fixed(struct lgm_clk_provider *ctx,
  25                                              const struct lgm_clk_branch *list)
  26 {
  27         unsigned long flags;
  28
  29         if (list->div_flags & CLOCK_FLAG_VAL_INIT) {
  30                 spin_lock_irqsave(&ctx->lock, flags);
  31                 lgm_set_clk_val(ctx->membase, list->div_off, list->div_shift,
  32                                 list->div_width, list->div_val);
  33                 spin_unlock_irqrestore(&ctx->lock, flags);
  34         }
  35
  36         return clk_hw_register_fixed_rate(NULL, list->name,
  37                                           list->parent_data[0].name,
  38                                           list->flags, list->mux_flags);
  39 }
  40
  41 static u8 lgm_clk_mux_get_parent(struct clk_hw *hw)
  42 {
  43         struct lgm_clk_mux *mux = to_lgm_clk_mux(hw);
  44         unsigned long flags;
  45         u32 val;
  46
  47         spin_lock_irqsave(&mux->lock, flags);
  48         if (mux->flags & MUX_CLK_SW)
  49                 val = mux->reg;
  50         else
  51                 val = lgm_get_clk_val(mux->membase, mux->reg, mux->shift,
  52                                       mux->width);
  53         spin_unlock_irqrestore(&mux->lock, flags);
  54         return clk_mux_val_to_index(hw, NULL, mux->flags, val);
  55 }
  56
  57 static int lgm_clk_mux_set_parent(struct clk_hw *hw, u8 index)
  58 {
  59         struct lgm_clk_mux *mux = to_lgm_clk_mux(hw);
  60         unsigned long flags;
  61         u32 val;
  62
  63         val = clk_mux_index_to_val(NULL, mux->flags, index);
  64         spin_lock_irqsave(&mux->lock, flags);
  65         if (mux->flags & MUX_CLK_SW)
  66                 mux->reg = val;
  67         else
  68                 lgm_set_clk_val(mux->membase, mux->reg, mux->shift,
  69                                 mux->width, val);
  70         spin_unlock_irqrestore(&mux->lock, flags);
  71
  72         return 0;
  73 }
  74
  75 static int lgm_clk_mux_determine_rate(struct clk_hw *hw,
  76                                       struct clk_rate_request *req)
  77 {
  78         struct lgm_clk_mux *mux = to_lgm_clk_mux(hw);
  79
  80         return clk_mux_determine_rate_flags(hw, req, mux->flags);
  81 }
  82
  83 static const struct clk_ops lgm_clk_mux_ops = {
  84         .get_parent = lgm_clk_mux_get_parent,
  85         .set_parent = lgm_clk_mux_set_parent,
  86         .determine_rate = lgm_clk_mux_determine_rate,
  87 };
  88
  89 static struct clk_hw *
  90 lgm_clk_register_mux(struct lgm_clk_provider *ctx,
  91                      const struct lgm_clk_branch *list)
  92 {
  93         unsigned long flags, cflags = list->mux_flags;
  94         struct device *dev = ctx->dev;
  95         u8 shift = list->mux_shift;
  96         u8 width = list->mux_width;
  97         struct clk_init_data init = {};
  98         struct lgm_clk_mux *mux;
  99         u32 reg = list->mux_off;
 100         struct clk_hw *hw;
 101         int ret;
 102
 103         mux = devm_kzalloc(dev, sizeof(*mux), GFP_KERNEL);
 104         if (!mux)
 105                 return ERR_PTR(-ENOMEM);
 106
 107         init.name = list->name;
 108         init.ops = &lgm_clk_mux_ops;
 109         init.flags = list->flags;
 110         init.parent_data = list->parent_data;
 111         init.num_parents = list->num_parents;
 112
 113         mux->membase = ctx->membase;
 114         mux->lock = ctx->lock;
 115         mux->reg = reg;
 116         mux->shift = shift;
 117         mux->width = width;
 118         mux->flags = cflags;
 119         mux->hw.init = &init;
 120
 121         hw = &mux->hw;
 122         ret = devm_clk_hw_register(dev, hw);
 123         if (ret)
 124                 return ERR_PTR(ret);
 125
 126         if (cflags & CLOCK_FLAG_VAL_INIT) {
 127                 spin_lock_irqsave(&mux->lock, flags);
 128                 lgm_set_clk_val(mux->membase, reg, shift, width, list->mux_val);
 129                 spin_unlock_irqrestore(&mux->lock, flags);
 130         }
 131
 132         return hw;
 133 }
 134
 135 static unsigned long
 136 lgm_clk_divider_recalc_rate(struct clk_hw *hw, unsigned long parent_rate)
 137 {
 138         struct lgm_clk_divider *divider = to_lgm_clk_divider(hw);
 139         unsigned long flags;
 140         unsigned int val;
 141
 142         spin_lock_irqsave(&divider->lock, flags);
 143         val = lgm_get_clk_val(divider->membase, divider->reg,
 144                               divider->shift, divider->width);
 145         spin_unlock_irqrestore(&divider->lock, flags);
 146
 147         return divider_recalc_rate(hw, parent_rate, val, divider->table,
 148                                    divider->flags, divider->width);
 149 }
 150
 151 static long
 152 lgm_clk_divider_round_rate(struct clk_hw *hw, unsigned long rate,
 153                            unsigned long *prate)
 154 {
 155         struct lgm_clk_divider *divider = to_lgm_clk_divider(hw);
 156
 157         return divider_round_rate(hw, rate, prate, divider->table,
 158                                   divider->width, divider->flags);
 159 }
 160
 161 static int
 162 lgm_clk_divider_set_rate(struct clk_hw *hw, unsigned long rate,
 163                          unsigned long prate)
 164 {
 165         struct lgm_clk_divider *divider = to_lgm_clk_divider(hw);
 166         unsigned long flags;
 167         int value;
 168
 169         value = divider_get_val(rate, prate, divider->table,
 170                                 divider->width, divider->flags);
 171         if (value < 0)
 172                 return value;
 173
 174         spin_lock_irqsave(&divider->lock, flags);
 175         lgm_set_clk_val(divider->membase, divider->reg,
 176                         divider->shift, divider->width, value);
 177         spin_unlock_irqrestore(&divider->lock, flags);
 178
 179         return 0;
 180 }
 181
 182 static int lgm_clk_divider_enable_disable(struct clk_hw *hw, int enable)
 183 {
 184         struct lgm_clk_divider *div = to_lgm_clk_divider(hw);
 185         unsigned long flags;
 186
 187         spin_lock_irqsave(&div->lock, flags);
 188         lgm_set_clk_val(div->membase, div->reg, div->shift_gate,
 189                         div->width_gate, enable);
 190         spin_unlock_irqrestore(&div->lock, flags);
 191         return 0;
 192 }
 193
 194 static int lgm_clk_divider_enable(struct clk_hw *hw)
 195 {
 196         return lgm_clk_divider_enable_disable(hw, 1);
 197 }
 198
 199 static void lgm_clk_divider_disable(struct clk_hw *hw)
 200 {
 201         lgm_clk_divider_enable_disable(hw, 0);
 202 }
 203
 204 static const struct clk_ops lgm_clk_divider_ops = {
 205         .recalc_rate = lgm_clk_divider_recalc_rate,
 206         .round_rate = lgm_clk_divider_round_rate,
 207         .set_rate = lgm_clk_divider_set_rate,
 208         .enable = lgm_clk_divider_enable,
 209         .disable = lgm_clk_divider_disable,
 210 };
 211
 212 static struct clk_hw *
 213 lgm_clk_register_divider(struct lgm_clk_provider *ctx,
 214                          const struct lgm_clk_branch *list)
 215 {
 216         unsigned long flags, cflags = list->div_flags;
 217         struct device *dev = ctx->dev;
 218         struct lgm_clk_divider *div;
 219         struct clk_init_data init = {};
 220         u8 shift = list->div_shift;
 221         u8 width = list->div_width;
 222         u8 shift_gate = list->div_shift_gate;
 223         u8 width_gate = list->div_width_gate;
 224         u32 reg = list->div_off;
 225         struct clk_hw *hw;
 226         int ret;
 227
 228         div = devm_kzalloc(dev, sizeof(*div), GFP_KERNEL);
 229         if (!div)
 230                 return ERR_PTR(-ENOMEM);
 231
 232         init.name = list->name;
 233         init.ops = &lgm_clk_divider_ops;
 234         init.flags = list->flags;
 235         init.parent_data = list->parent_data;
 236         init.num_parents = 1;
 237
 238         div->membase = ctx->membase;
 239         div->lock = ctx->lock;
 240         div->reg = reg;
 241         div->shift = shift;
 242         div->width = width;
 243         div->shift_gate = shift_gate;
 244         div->width_gate = width_gate;
 245         div->flags = cflags;
 246         div->table = list->div_table;
 247         div->hw.init = &init;
 248
 249         hw = &div->hw;
 250         ret = devm_clk_hw_register(dev, hw);
 251         if (ret)
 252                 return ERR_PTR(ret);
 253
 254         if (cflags & CLOCK_FLAG_VAL_INIT) {
 255                 spin_lock_irqsave(&div->lock, flags);
 256                 lgm_set_clk_val(div->membase, reg, shift, width, list->div_val);
 257                 spin_unlock_irqrestore(&div->lock, flags);
 258         }
 259
 260         return hw;
 261 }
 262
 263 static struct clk_hw *
 264 lgm_clk_register_fixed_factor(struct lgm_clk_provider *ctx,
 265                               const struct lgm_clk_branch *list)
 266 {
 267         unsigned long flags;
 268         struct clk_hw *hw;
 269
 270         hw = clk_hw_register_fixed_factor(ctx->dev, list->name,
 271                                           list->parent_data[0].name, list->flags,
 272                                           list->mult, list->div);
 273         if (IS_ERR(hw))
 274                 return ERR_CAST(hw);
 275
 276         if (list->div_flags & CLOCK_FLAG_VAL_INIT) {
 277                 spin_lock_irqsave(&ctx->lock, flags);
 278                 lgm_set_clk_val(ctx->membase, list->div_off, list->div_shift,
 279                                 list->div_width, list->div_val);
 280                 spin_unlock_irqrestore(&ctx->lock, flags);
 281         }
 282
 283         return hw;
 284 }
 285
 286 static int lgm_clk_gate_enable(struct clk_hw *hw)
 287 {
 288         struct lgm_clk_gate *gate = to_lgm_clk_gate(hw);
 289         unsigned long flags;
 290         unsigned int reg;
 291
 292         spin_lock_irqsave(&gate->lock, flags);
 293         reg = GATE_HW_REG_EN(gate->reg);
 294         lgm_set_clk_val(gate->membase, reg, gate->shift, 1, 1);
 295         spin_unlock_irqrestore(&gate->lock, flags);
 296
 297         return 0;
 298 }
 299
 300 static void lgm_clk_gate_disable(struct clk_hw *hw)
 301 {
 302         struct lgm_clk_gate *gate = to_lgm_clk_gate(hw);
 303         unsigned long flags;
 304         unsigned int reg;
 305
 306         spin_lock_irqsave(&gate->lock, flags);
 307         reg = GATE_HW_REG_DIS(gate->reg);
 308         lgm_set_clk_val(gate->membase, reg, gate->shift, 1, 1);
 309         spin_unlock_irqrestore(&gate->lock, flags);
 310 }
 311
 312 static int lgm_clk_gate_is_enabled(struct clk_hw *hw)
 313 {
 314         struct lgm_clk_gate *gate = to_lgm_clk_gate(hw);
 315         unsigned int reg, ret;
 316         unsigned long flags;
 317
 318         spin_lock_irqsave(&gate->lock, flags);
 319         reg = GATE_HW_REG_STAT(gate->reg);
 320         ret = lgm_get_clk_val(gate->membase, reg, gate->shift, 1);
 321         spin_unlock_irqrestore(&gate->lock, flags);
 322
 323         return ret;
 324 }
 325
 326 static const struct clk_ops lgm_clk_gate_ops = {
 327         .enable = lgm_clk_gate_enable,
 328         .disable = lgm_clk_gate_disable,
 329         .is_enabled = lgm_clk_gate_is_enabled,
 330 };
 331
 332 static struct clk_hw *
 333 lgm_clk_register_gate(struct lgm_clk_provider *ctx,
 334                       const struct lgm_clk_branch *list)
 335 {
 336         unsigned long flags, cflags = list->gate_flags;
 337         const char *pname = list->parent_data[0].name;
 338         struct device *dev = ctx->dev;
 339         u8 shift = list->gate_shift;
 340         struct clk_init_data init = {};
 341         struct lgm_clk_gate *gate;
 342         u32 reg = list->gate_off;
 343         struct clk_hw *hw;
 344         int ret;
 345
 346         gate = devm_kzalloc(dev, sizeof(*gate), GFP_KERNEL);
 347         if (!gate)
 348                 return ERR_PTR(-ENOMEM);
 349
 350         init.name = list->name;
 351         init.ops = &lgm_clk_gate_ops;
 352         init.flags = list->flags;
 353         init.parent_names = pname ? &pname : NULL;
 354         init.num_parents = pname ? 1 : 0;
 355
 356         gate->membase = ctx->membase;
 357         gate->lock = ctx->lock;
 358         gate->reg = reg;
 359         gate->shift = shift;
 360         gate->flags = cflags;
 361         gate->hw.init = &init;
 362
 363         hw = &gate->hw;
 364         ret = devm_clk_hw_register(dev, hw);
 365         if (ret)
 366                 return ERR_PTR(ret);
 367
 368         if (cflags & CLOCK_FLAG_VAL_INIT) {
 369                 spin_lock_irqsave(&gate->lock, flags);
 370                 lgm_set_clk_val(gate->membase, reg, shift, 1, list->gate_val);
 371                 spin_unlock_irqrestore(&gate->lock, flags);
 372         }
 373
 374         return hw;
 375 }
 376
 377 int lgm_clk_register_branches(struct lgm_clk_provider *ctx,
 378                               const struct lgm_clk_branch *list,
 379                               unsigned int nr_clk)
 380 {
 381         struct clk_hw *hw;
 382         unsigned int idx;
 383
 384         for (idx = 0; idx < nr_clk; idx++, list++) {
 385                 switch (list->type) {
 386                 case CLK_TYPE_FIXED:
 387                         hw = lgm_clk_register_fixed(ctx, list);
 388                         break;
 389                 case CLK_TYPE_MUX:
 390                         hw = lgm_clk_register_mux(ctx, list);
 391                         break;
 392                 case CLK_TYPE_DIVIDER:
 393                         hw = lgm_clk_register_divider(ctx, list);
 394                         break;
 395                 case CLK_TYPE_FIXED_FACTOR:
 396                         hw = lgm_clk_register_fixed_factor(ctx, list);
 397                         break;
 398                 case CLK_TYPE_GATE:
 399                         hw = lgm_clk_register_gate(ctx, list);
 400                         break;
 401                 default:
 402                         dev_err(ctx->dev, "invalid clk type\n");
 403                         return -EINVAL;
 404                 }
 405
 406                 if (IS_ERR(hw)) {
 407                         dev_err(ctx->dev,
 408                                 "register clk: %s, type: %u failed!\n",
 409                                 list->name, list->type);
 410                         return -EIO;
 411                 }
 412                 ctx->clk_data.hws[list->id] = hw;
 413         }
 414
 415         return 0;
 416 }
 417
 418 static unsigned long
 419 lgm_clk_ddiv_recalc_rate(struct clk_hw *hw, unsigned long parent_rate)
 420 {
 421         struct lgm_clk_ddiv *ddiv = to_lgm_clk_ddiv(hw);
 422         unsigned int div0, div1, exdiv;
 423         u64 prate;
 424
 425         div0 = lgm_get_clk_val(ddiv->membase, ddiv->reg,
 426                                ddiv->shift0, ddiv->width0) + 1;
 427         div1 = lgm_get_clk_val(ddiv->membase, ddiv->reg,
 428                                ddiv->shift1, ddiv->width1) + 1;
 429         exdiv = lgm_get_clk_val(ddiv->membase, ddiv->reg,
 430                                 ddiv->shift2, ddiv->width2);
 431         prate = (u64)parent_rate;
 432         do_div(prate, div0);
 433         do_div(prate, div1);
 434
 435         if (exdiv) {
 436                 do_div(prate, ddiv->div);
 437                 prate *= ddiv->mult;
 438         }
 439
 440         return prate;
 441 }
 442
 443 static int lgm_clk_ddiv_enable(struct clk_hw *hw)
 444 {
 445         struct lgm_clk_ddiv *ddiv = to_lgm_clk_ddiv(hw);
 446         unsigned long flags;
 447
 448         spin_lock_irqsave(&ddiv->lock, flags);
 449         lgm_set_clk_val(ddiv->membase, ddiv->reg, ddiv->shift_gate,
 450                         ddiv->width_gate, 1);
 451         spin_unlock_irqrestore(&ddiv->lock, flags);
 452         return 0;
 453 }
 454
 455 static void lgm_clk_ddiv_disable(struct clk_hw *hw)
 456 {
 457         struct lgm_clk_ddiv *ddiv = to_lgm_clk_ddiv(hw);
 458         unsigned long flags;
 459
 460         spin_lock_irqsave(&ddiv->lock, flags);
 461         lgm_set_clk_val(ddiv->membase, ddiv->reg, ddiv->shift_gate,
 462                         ddiv->width_gate, 0);
 463         spin_unlock_irqrestore(&ddiv->lock, flags);
 464 }
 465
 466 static int
 467 lgm_clk_get_ddiv_val(u32 div, u32 *ddiv1, u32 *ddiv2)
 468 {
 469         u32 idx, temp;
 470
 471         *ddiv1 = 1;
 472         *ddiv2 = 1;
 473
 474         if (div > MAX_DIVIDER_VAL)
 475                 div = MAX_DIVIDER_VAL;
 476
 477         if (div > 1) {
 478                 for (idx = 2; idx <= MAX_DDIV_REG; idx++) {
 479                         temp = DIV_ROUND_UP_ULL((u64)div, idx);
 480                         if (div % idx == 0 && temp <= MAX_DDIV_REG)
 481                                 break;
 482                 }
 483
 484                 if (idx > MAX_DDIV_REG)
 485                         return -EINVAL;
 486
 487                 *ddiv1 = temp;
 488                 *ddiv2 = idx;
 489         }
 490
 491         return 0;
 492 }
 493
 494 static int
 495 lgm_clk_ddiv_set_rate(struct clk_hw *hw, unsigned long rate,
 496                       unsigned long prate)
 497 {
 498         struct lgm_clk_ddiv *ddiv = to_lgm_clk_ddiv(hw);
 499         u32 div, ddiv1, ddiv2;
 500         unsigned long flags;
 501
 502         div = DIV_ROUND_CLOSEST_ULL((u64)prate, rate);
 503
 504         spin_lock_irqsave(&ddiv->lock, flags);
 505         if (lgm_get_clk_val(ddiv->membase, ddiv->reg, ddiv->shift2, 1)) {
 506                 div = DIV_ROUND_CLOSEST_ULL((u64)div, 5);
 507                 div = div * 2;
 508         }
 509
 510         if (div <= 0) {
 511                 spin_unlock_irqrestore(&ddiv->lock, flags);
 512                 return -EINVAL;
 513         }
 514
 515         if (lgm_clk_get_ddiv_val(div, &ddiv1, &ddiv2)) {
 516                 spin_unlock_irqrestore(&ddiv->lock, flags);
 517                 return -EINVAL;
 518         }
 519
 520         lgm_set_clk_val(ddiv->membase, ddiv->reg, ddiv->shift0, ddiv->width0,
 521                         ddiv1 - 1);
 522
 523         lgm_set_clk_val(ddiv->membase, ddiv->reg,  ddiv->shift1, ddiv->width1,
 524                         ddiv2 - 1);
 525         spin_unlock_irqrestore(&ddiv->lock, flags);
 526
 527         return 0;
 528 }
 529
 530 static long
 531 lgm_clk_ddiv_round_rate(struct clk_hw *hw, unsigned long rate,
 532                         unsigned long *prate)
 533 {
 534         struct lgm_clk_ddiv *ddiv = to_lgm_clk_ddiv(hw);
 535         u32 div, ddiv1, ddiv2;
 536         unsigned long flags;
 537         u64 rate64;
 538
 539         div = DIV_ROUND_CLOSEST_ULL((u64)*prate, rate);
 540
 541         /* if predivide bit is enabled, modify div by factor of 2.5 */
 542         spin_lock_irqsave(&ddiv->lock, flags);
 543         if (lgm_get_clk_val(ddiv->membase, ddiv->reg, ddiv->shift2, 1)) {
 544                 div = div * 2;
 545                 div = DIV_ROUND_CLOSEST_ULL((u64)div, 5);
 546         }
 547         spin_unlock_irqrestore(&ddiv->lock, flags);
 548
 549         if (div <= 0)
 550                 return *prate;
 551
 552         if (lgm_clk_get_ddiv_val(div, &ddiv1, &ddiv2) != 0)
 553                 if (lgm_clk_get_ddiv_val(div + 1, &ddiv1, &ddiv2) != 0)
 554                         return -EINVAL;
 555
 556         rate64 = *prate;
 557         do_div(rate64, ddiv1);
 558         do_div(rate64, ddiv2);
 559
 560         /* if predivide bit is enabled, modify rounded rate by factor of 2.5 */
 561         spin_lock_irqsave(&ddiv->lock, flags);
 562         if (lgm_get_clk_val(ddiv->membase, ddiv->reg, ddiv->shift2, 1)) {
 563                 rate64 = rate64 * 2;
 564                 rate64 = DIV_ROUND_CLOSEST_ULL(rate64, 5);
 565         }
 566         spin_unlock_irqrestore(&ddiv->lock, flags);
 567
 568         return rate64;
 569 }
 570
 571 static const struct clk_ops lgm_clk_ddiv_ops = {
 572         .recalc_rate = lgm_clk_ddiv_recalc_rate,
 573         .enable = lgm_clk_ddiv_enable,
 574         .disable = lgm_clk_ddiv_disable,
 575         .set_rate = lgm_clk_ddiv_set_rate,
 576         .round_rate = lgm_clk_ddiv_round_rate,
 577 };
 578
 579 int lgm_clk_register_ddiv(struct lgm_clk_provider *ctx,
 580                           const struct lgm_clk_ddiv_data *list,
 581                           unsigned int nr_clk)
 582 {
 583         struct device *dev = ctx->dev;
 584         struct clk_hw *hw;
 585         unsigned int idx;
 586         int ret;
 587
 588         for (idx = 0; idx < nr_clk; idx++, list++) {
 589                 struct clk_init_data init = {};
 590                 struct lgm_clk_ddiv *ddiv;
 591
 592                 ddiv = devm_kzalloc(dev, sizeof(*ddiv), GFP_KERNEL);
 593                 if (!ddiv)
 594                         return -ENOMEM;
 595
 596                 init.name = list->name;
 597                 init.ops = &lgm_clk_ddiv_ops;
 598                 init.flags = list->flags;
 599                 init.parent_data = list->parent_data;
 600                 init.num_parents = 1;
 601
 602                 ddiv->membase = ctx->membase;
 603                 ddiv->lock = ctx->lock;
 604                 ddiv->reg = list->reg;
 605                 ddiv->shift0 = list->shift0;
 606                 ddiv->width0 = list->width0;
 607                 ddiv->shift1 = list->shift1;
 608                 ddiv->width1 = list->width1;
 609                 ddiv->shift_gate = list->shift_gate;
 610                 ddiv->width_gate = list->width_gate;
 611                 ddiv->shift2 = list->ex_shift;
 612                 ddiv->width2 = list->ex_width;
 613                 ddiv->flags = list->div_flags;
 614                 ddiv->mult = 2;
 615                 ddiv->div = 5;
 616                 ddiv->hw.init = &init;
 617
 618                 hw = &ddiv->hw;
 619                 ret = devm_clk_hw_register(dev, hw);
 620                 if (ret) {
 621                         dev_err(dev, "register clk: %s failed!\n", list->name);
 622                         return ret;
 623                 }
 624                 ctx->clk_data.hws[list->id] = hw;
 625         }
 626
 627         return 0;
 628 }