drivers/clk/rockchip/clk_rk322x.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * (C) Copyright 2017 Rockchip Electronics Co., Ltd
   4  */
   5
   6 #include <common.h>
   7 #include <clk-uclass.h>
   8 #include <dm.h>
   9 #include <errno.h>
  10 #include <syscon.h>
  11 #include <asm/io.h>
  12 #include <asm/arch-rockchip/clock.h>
  13 #include <asm/arch-rockchip/cru_rk322x.h>
  14 #include <asm/arch-rockchip/hardware.h>
  15 #include <dm/lists.h>
  16 #include <dt-bindings/clock/rk3228-cru.h>
  17 #include <linux/log2.h>
  18
  19 enum {
  20         VCO_MAX_HZ      = 3200U * 1000000,
  21         VCO_MIN_HZ      = 800 * 1000000,
  22         OUTPUT_MAX_HZ   = 3200U * 1000000,
  23         OUTPUT_MIN_HZ   = 24 * 1000000,
  24 };
  25
  26 #define DIV_TO_RATE(input_rate, div)    ((input_rate) / ((div) + 1))
  27
  28 #define PLL_DIVISORS(hz, _refdiv, _postdiv1, _postdiv2) {\
  29         .refdiv = _refdiv,\
  30         .fbdiv = (u32)((u64)hz * _refdiv * _postdiv1 * _postdiv2 / OSC_HZ), \
  31         .postdiv1 = _postdiv1, .postdiv2 = _postdiv2};\
  32         _Static_assert(((u64)hz * _refdiv * _postdiv1 * _postdiv2 / OSC_HZ) * \
  33                          OSC_HZ / (_refdiv * _postdiv1 * _postdiv2) == hz, \
  34                          #hz "Hz cannot be hit with PLL "\
  35                          "divisors on line " __stringify(__LINE__));
  36
  37 /* use integer mode*/
  38 static const struct pll_div apll_init_cfg = PLL_DIVISORS(APLL_HZ, 1, 3, 1);
  39 static const struct pll_div gpll_init_cfg = PLL_DIVISORS(GPLL_HZ, 2, 2, 1);
  40
  41 static int rkclk_set_pll(struct rk322x_cru *cru, enum rk_clk_id clk_id,
  42                          const struct pll_div *div)
  43 {
  44         int pll_id = rk_pll_id(clk_id);
  45         struct rk322x_pll *pll = &cru->pll[pll_id];
  46
  47         /* All PLLs have same VCO and output frequency range restrictions. */
  48         uint vco_hz = OSC_HZ / 1000 * div->fbdiv / div->refdiv * 1000;
  49         uint output_hz = vco_hz / div->postdiv1 / div->postdiv2;
  50
  51         debug("PLL at %p: fb=%d, ref=%d, pst1=%d, pst2=%d, vco=%u Hz, output=%u Hz\n",
  52               pll, div->fbdiv, div->refdiv, div->postdiv1,
  53               div->postdiv2, vco_hz, output_hz);
  54         assert(vco_hz >= VCO_MIN_HZ && vco_hz <= VCO_MAX_HZ &&
  55                output_hz >= OUTPUT_MIN_HZ && output_hz <= OUTPUT_MAX_HZ);
  56
  57         /* use integer mode */
  58         rk_setreg(&pll->con1, 1 << PLL_DSMPD_SHIFT);
  59         /* Power down */
  60         rk_setreg(&pll->con1, 1 << PLL_PD_SHIFT);
  61
  62         rk_clrsetreg(&pll->con0,
  63                      PLL_POSTDIV1_MASK | PLL_FBDIV_MASK,
  64                      (div->postdiv1 << PLL_POSTDIV1_SHIFT) | div->fbdiv);
  65         rk_clrsetreg(&pll->con1, PLL_POSTDIV2_MASK | PLL_REFDIV_MASK,
  66                      (div->postdiv2 << PLL_POSTDIV2_SHIFT |
  67                      div->refdiv << PLL_REFDIV_SHIFT));
  68
  69         /* Power Up */
  70         rk_clrreg(&pll->con1, 1 << PLL_PD_SHIFT);
  71
  72         /* waiting for pll lock */
  73         while (readl(&pll->con1) & (1 << PLL_LOCK_STATUS_SHIFT))
  74                 udelay(1);
  75
  76         return 0;
  77 }
  78
  79 static void rkclk_init(struct rk322x_cru *cru)
  80 {
  81         u32 aclk_div;
  82         u32 hclk_div;
  83         u32 pclk_div;
  84
  85         /* pll enter slow-mode */
  86         rk_clrsetreg(&cru->cru_mode_con,
  87                      GPLL_MODE_MASK | APLL_MODE_MASK,
  88                      GPLL_MODE_SLOW << GPLL_MODE_SHIFT |
  89                      APLL_MODE_SLOW << APLL_MODE_SHIFT);
  90
  91         /* init pll */
  92         rkclk_set_pll(cru, CLK_ARM, &apll_init_cfg);
  93         rkclk_set_pll(cru, CLK_GENERAL, &gpll_init_cfg);
  94
  95         /*
  96          * select apll as cpu/core clock pll source and
  97          * set up dependent divisors for PERI and ACLK clocks.
  98          * core hz : apll = 1:1
  99          */
 100         aclk_div = APLL_HZ / CORE_ACLK_HZ - 1;
 101         assert((aclk_div + 1) * CORE_ACLK_HZ == APLL_HZ && aclk_div < 0x7);
 102
 103         pclk_div = APLL_HZ / CORE_PERI_HZ - 1;
 104         assert((pclk_div + 1) * CORE_PERI_HZ == APLL_HZ && pclk_div < 0xf);
 105
 106         rk_clrsetreg(&cru->cru_clksel_con[0],
 107                      CORE_CLK_PLL_SEL_MASK | CORE_DIV_CON_MASK,
 108                      CORE_CLK_PLL_SEL_APLL << CORE_CLK_PLL_SEL_SHIFT |
 109                      0 << CORE_DIV_CON_SHIFT);
 110
 111         rk_clrsetreg(&cru->cru_clksel_con[1],
 112                      CORE_ACLK_DIV_MASK | CORE_PERI_DIV_MASK,
 113                      aclk_div << CORE_ACLK_DIV_SHIFT |
 114                      pclk_div << CORE_PERI_DIV_SHIFT);
 115
 116         /*
 117          * select gpll as pd_bus bus clock source and
 118          * set up dependent divisors for PCLK/HCLK and ACLK clocks.
 119          */
 120         aclk_div = GPLL_HZ / BUS_ACLK_HZ - 1;
 121         assert((aclk_div + 1) * BUS_ACLK_HZ == GPLL_HZ && aclk_div <= 0x1f);
 122
 123         pclk_div = BUS_ACLK_HZ / BUS_PCLK_HZ - 1;
 124         assert((pclk_div + 1) * BUS_PCLK_HZ == BUS_ACLK_HZ && pclk_div <= 0x7);
 125
 126         hclk_div = BUS_ACLK_HZ / BUS_HCLK_HZ - 1;
 127         assert((hclk_div + 1) * BUS_HCLK_HZ == BUS_ACLK_HZ && hclk_div <= 0x3);
 128
 129         rk_clrsetreg(&cru->cru_clksel_con[0],
 130                      BUS_ACLK_PLL_SEL_MASK | BUS_ACLK_DIV_MASK,
 131                      BUS_ACLK_PLL_SEL_GPLL << BUS_ACLK_PLL_SEL_SHIFT |
 132                      aclk_div << BUS_ACLK_DIV_SHIFT);
 133
 134         rk_clrsetreg(&cru->cru_clksel_con[1],
 135                      BUS_PCLK_DIV_MASK | BUS_HCLK_DIV_MASK,
 136                      pclk_div << BUS_PCLK_DIV_SHIFT |
 137                      hclk_div << BUS_HCLK_DIV_SHIFT);
 138
 139         /*
 140          * select gpll as pd_peri bus clock source and
 141          * set up dependent divisors for PCLK/HCLK and ACLK clocks.
 142          */
 143         aclk_div = GPLL_HZ / PERI_ACLK_HZ - 1;
 144         assert((aclk_div + 1) * PERI_ACLK_HZ == GPLL_HZ && aclk_div < 0x1f);
 145
 146         hclk_div = ilog2(PERI_ACLK_HZ / PERI_HCLK_HZ);
 147         assert((1 << hclk_div) * PERI_HCLK_HZ ==
 148                 PERI_ACLK_HZ && (hclk_div < 0x4));
 149
 150         pclk_div = ilog2(PERI_ACLK_HZ / PERI_PCLK_HZ);
 151         assert((1 << pclk_div) * PERI_PCLK_HZ ==
 152                 PERI_ACLK_HZ && pclk_div < 0x8);
 153
 154         rk_clrsetreg(&cru->cru_clksel_con[10],
 155                      PERI_PLL_SEL_MASK | PERI_PCLK_DIV_MASK |
 156                      PERI_HCLK_DIV_MASK | PERI_ACLK_DIV_MASK,
 157                      PERI_PLL_GPLL << PERI_PLL_SEL_SHIFT |
 158                      pclk_div << PERI_PCLK_DIV_SHIFT |
 159                      hclk_div << PERI_HCLK_DIV_SHIFT |
 160                      aclk_div << PERI_ACLK_DIV_SHIFT);
 161
 162         /* PLL enter normal-mode */
 163         rk_clrsetreg(&cru->cru_mode_con,
 164                      GPLL_MODE_MASK | APLL_MODE_MASK,
 165                      GPLL_MODE_NORM << GPLL_MODE_SHIFT |
 166                      APLL_MODE_NORM << APLL_MODE_SHIFT);
 167 }
 168
 169 /* Get pll rate by id */
 170 static uint32_t rkclk_pll_get_rate(struct rk322x_cru *cru,
 171                                    enum rk_clk_id clk_id)
 172 {
 173         uint32_t refdiv, fbdiv, postdiv1, postdiv2;
 174         uint32_t con;
 175         int pll_id = rk_pll_id(clk_id);
 176         struct rk322x_pll *pll = &cru->pll[pll_id];
 177         static u8 clk_shift[CLK_COUNT] = {
 178                 0xff, APLL_MODE_SHIFT, DPLL_MODE_SHIFT, 0xff,
 179                 GPLL_MODE_SHIFT, 0xff
 180         };
 181         static u32 clk_mask[CLK_COUNT] = {
 182                 0xff, APLL_MODE_MASK, DPLL_MODE_MASK, 0xff,
 183                 GPLL_MODE_MASK, 0xff
 184         };
 185         uint shift;
 186         uint mask;
 187
 188         con = readl(&cru->cru_mode_con);
 189         shift = clk_shift[clk_id];
 190         mask = clk_mask[clk_id];
 191
 192         switch ((con & mask) >> shift) {
 193         case GPLL_MODE_SLOW:
 194                 return OSC_HZ;
 195         case GPLL_MODE_NORM:
 196
 197                 /* normal mode */
 198                 con = readl(&pll->con0);
 199                 postdiv1 = (con & PLL_POSTDIV1_MASK) >> PLL_POSTDIV1_SHIFT;
 200                 fbdiv = (con & PLL_FBDIV_MASK) >> PLL_FBDIV_SHIFT;
 201                 con = readl(&pll->con1);
 202                 postdiv2 = (con & PLL_POSTDIV2_MASK) >> PLL_POSTDIV2_SHIFT;
 203                 refdiv = (con & PLL_REFDIV_MASK) >> PLL_REFDIV_SHIFT;
 204                 return (24 * fbdiv / (refdiv * postdiv1 * postdiv2)) * 1000000;
 205         default:
 206                 return 32768;
 207         }
 208 }
 209
 210 static ulong rockchip_mmc_get_clk(struct rk322x_cru *cru, uint clk_general_rate,
 211                                   int periph)
 212 {
 213         uint src_rate;
 214         uint div, mux;
 215         u32 con;
 216
 217         switch (periph) {
 218         case HCLK_EMMC:
 219         case SCLK_EMMC:
 220         case SCLK_EMMC_SAMPLE:
 221                 con = readl(&cru->cru_clksel_con[11]);
 222                 mux = (con & EMMC_PLL_MASK) >> EMMC_PLL_SHIFT;
 223                 con = readl(&cru->cru_clksel_con[12]);
 224                 div = (con & EMMC_DIV_MASK) >> EMMC_DIV_SHIFT;
 225                 break;
 226         case HCLK_SDMMC:
 227         case SCLK_SDMMC:
 228                 con = readl(&cru->cru_clksel_con[11]);
 229                 mux = (con & MMC0_PLL_MASK) >> MMC0_PLL_SHIFT;
 230                 div = (con & MMC0_DIV_MASK) >> MMC0_DIV_SHIFT;
 231                 break;
 232         default:
 233                 return -EINVAL;
 234         }
 235
 236         src_rate = mux == EMMC_SEL_24M ? OSC_HZ : clk_general_rate;
 237         return DIV_TO_RATE(src_rate, div) / 2;
 238 }
 239
 240 static ulong rk322x_mac_set_clk(struct rk322x_cru *cru, uint freq)
 241 {
 242         ulong ret;
 243
 244         /*
 245          * The gmac clock can be derived either from an external clock
 246          * or can be generated from internally by a divider from SCLK_MAC.
 247          */
 248         if (readl(&cru->cru_clksel_con[5]) & BIT(5)) {
 249                 /* An external clock will always generate the right rate... */
 250                 ret = freq;
 251         } else {
 252                 u32 con = readl(&cru->cru_clksel_con[5]);
 253                 ulong pll_rate;
 254                 u8 div;
 255
 256                 if ((con >> MAC_PLL_SEL_SHIFT) & MAC_PLL_SEL_MASK)
 257                         pll_rate = GPLL_HZ;
 258                 else
 259                         /* CPLL is not set */
 260                         return -EPERM;
 261
 262                 div = DIV_ROUND_UP(pll_rate, freq) - 1;
 263                 if (div <= 0x1f)
 264                         rk_clrsetreg(&cru->cru_clksel_con[5], CLK_MAC_DIV_MASK,
 265                                      div << CLK_MAC_DIV_SHIFT);
 266                 else
 267                         debug("Unsupported div for gmac:%d\n", div);
 268
 269                 return DIV_TO_RATE(pll_rate, div);
 270         }
 271
 272         return ret;
 273 }
 274
 275 static ulong rockchip_mmc_set_clk(struct rk322x_cru *cru, uint clk_general_rate,
 276                                   int periph, uint freq)
 277 {
 278         int src_clk_div;
 279         int mux;
 280
 281         debug("%s: clk_general_rate=%u\n", __func__, clk_general_rate);
 282
 283         /* mmc clock defaulg div 2 internal, need provide double in cru */
 284         src_clk_div = DIV_ROUND_UP(clk_general_rate / 2, freq);
 285
 286         if (src_clk_div > 128) {
 287                 src_clk_div = DIV_ROUND_UP(OSC_HZ / 2, freq);
 288                 assert(src_clk_div - 1 < 128);
 289                 mux = EMMC_SEL_24M;
 290         } else {
 291                 mux = EMMC_SEL_GPLL;
 292         }
 293
 294         switch (periph) {
 295         case HCLK_EMMC:
 296         case SCLK_EMMC:
 297         case SCLK_EMMC_SAMPLE:
 298                 rk_clrsetreg(&cru->cru_clksel_con[11],
 299                              EMMC_PLL_MASK,
 300                              mux << EMMC_PLL_SHIFT);
 301                 rk_clrsetreg(&cru->cru_clksel_con[12],
 302                              EMMC_DIV_MASK,
 303                              (src_clk_div - 1) << EMMC_DIV_SHIFT);
 304                 break;
 305         case HCLK_SDMMC:
 306         case SCLK_SDMMC:
 307                 rk_clrsetreg(&cru->cru_clksel_con[11],
 308                              MMC0_PLL_MASK | MMC0_DIV_MASK,
 309                              mux << MMC0_PLL_SHIFT |
 310                              (src_clk_div - 1) << MMC0_DIV_SHIFT);
 311                 break;
 312         default:
 313                 return -EINVAL;
 314         }
 315
 316         return rockchip_mmc_get_clk(cru, clk_general_rate, periph);
 317 }
 318
 319 static int rk322x_ddr_set_clk(struct rk322x_cru *cru, unsigned int set_rate)
 320 {
 321         struct pll_div dpll_cfg;
 322
 323         /*  clk_ddrc == DPLL = 24MHz / refdiv * fbdiv / postdiv1 / postdiv2 */
 324         switch (set_rate) {
 325         case 400*MHz:
 326                 dpll_cfg = (struct pll_div)
 327                 {.refdiv = 1, .fbdiv = 50, .postdiv1 = 3, .postdiv2 = 1};
 328                 break;
 329         case 600*MHz:
 330                 dpll_cfg = (struct pll_div)
 331                 {.refdiv = 1, .fbdiv = 75, .postdiv1 = 3, .postdiv2 = 1};
 332                 break;
 333         case 800*MHz:
 334                 dpll_cfg = (struct pll_div)
 335                 {.refdiv = 1, .fbdiv = 100, .postdiv1 = 3, .postdiv2 = 1};
 336                 break;
 337         }
 338
 339         /* pll enter slow-mode */
 340         rk_clrsetreg(&cru->cru_mode_con, DPLL_MODE_MASK,
 341                      DPLL_MODE_SLOW << DPLL_MODE_SHIFT);
 342         rkclk_set_pll(cru, CLK_DDR, &dpll_cfg);
 343         /* PLL enter normal-mode */
 344         rk_clrsetreg(&cru->cru_mode_con, DPLL_MODE_MASK,
 345                      DPLL_MODE_NORM << DPLL_MODE_SHIFT);
 346
 347         return set_rate;
 348 }
 349 static ulong rk322x_clk_get_rate(struct clk *clk)
 350 {
 351         struct rk322x_clk_priv *priv = dev_get_priv(clk->dev);
 352         ulong rate, gclk_rate;
 353
 354         gclk_rate = rkclk_pll_get_rate(priv->cru, CLK_GENERAL);
 355         switch (clk->id) {
 356         case 0 ... 63:
 357                 rate = rkclk_pll_get_rate(priv->cru, clk->id);
 358                 break;
 359         case HCLK_EMMC:
 360         case SCLK_EMMC:
 361         case HCLK_SDMMC:
 362         case SCLK_SDMMC:
 363                 rate = rockchip_mmc_get_clk(priv->cru, gclk_rate, clk->id);
 364                 break;
 365         default:
 366                 return -ENOENT;
 367         }
 368
 369         return rate;
 370 }
 371
 372 static ulong rk322x_clk_set_rate(struct clk *clk, ulong rate)
 373 {
 374         struct rk322x_clk_priv *priv = dev_get_priv(clk->dev);
 375         ulong new_rate, gclk_rate;
 376
 377         gclk_rate = rkclk_pll_get_rate(priv->cru, CLK_GENERAL);
 378         switch (clk->id) {
 379         case HCLK_EMMC:
 380         case SCLK_EMMC:
 381         case HCLK_SDMMC:
 382         case SCLK_SDMMC:
 383                 new_rate = rockchip_mmc_set_clk(priv->cru, gclk_rate,
 384                                                 clk->id, rate);
 385                 break;
 386         case CLK_DDR:
 387                 new_rate = rk322x_ddr_set_clk(priv->cru, rate);
 388                 break;
 389         case SCLK_MAC:
 390                 new_rate = rk322x_mac_set_clk(priv->cru, rate);
 391                 break;
 392         case PLL_GPLL:
 393                 return 0;
 394         default:
 395                 return -ENOENT;
 396         }
 397
 398         return new_rate;
 399 }
 400
 401 static int rk322x_gmac_set_parent(struct clk *clk, struct clk *parent)
 402 {
 403         struct rk322x_clk_priv *priv = dev_get_priv(clk->dev);
 404         struct rk322x_cru *cru = priv->cru;
 405
 406         /*
 407          * If the requested parent is in the same clock-controller and the id
 408          * is SCLK_MAC_SRC ("sclk_gmac_src"), switch to the internal clock.
 409          */
 410         if ((parent->dev == clk->dev) && (parent->id == SCLK_MAC_SRC)) {
 411                 debug("%s: switching RGMII to SCLK_MAC_SRC\n", __func__);
 412                 rk_clrsetreg(&cru->cru_clksel_con[5], BIT(5), 0);
 413                 return 0;
 414         }
 415
 416         /*
 417          * If the requested parent is in the same clock-controller and the id
 418          * is SCLK_MAC_EXTCLK (sclk_mac_extclk), switch to the external clock.
 419          */
 420         if ((parent->dev == clk->dev) && (parent->id == SCLK_MAC_EXTCLK)) {
 421                 debug("%s: switching RGMII to SCLK_MAC_EXTCLK\n", __func__);
 422                 rk_clrsetreg(&cru->cru_clksel_con[5], BIT(5), BIT(5));
 423                 return 0;
 424         }
 425
 426         return -EINVAL;
 427 }
 428
 429 static int rk322x_gmac_extclk_set_parent(struct clk *clk, struct clk *parent)
 430 {
 431         struct rk322x_clk_priv *priv = dev_get_priv(clk->dev);
 432         const char *clock_output_name;
 433         struct rk322x_cru *cru = priv->cru;
 434         int ret;
 435
 436         ret = dev_read_string_index(parent->dev, "clock-output-names",
 437                                     parent->id, &clock_output_name);
 438         if (ret < 0)
 439                 return -ENODATA;
 440
 441         if (!strcmp(clock_output_name, "ext_gmac")) {
 442                 debug("%s: switching gmac extclk to ext_gmac\n", __func__);
 443                 rk_clrsetreg(&cru->cru_clksel_con[29], BIT(10), 0);
 444                 return 0;
 445         } else if (!strcmp(clock_output_name, "phy_50m_out")) {
 446                 debug("%s: switching gmac extclk to phy_50m_out\n", __func__);
 447                 rk_clrsetreg(&cru->cru_clksel_con[29], BIT(10), BIT(10));
 448                 return 0;
 449         }
 450
 451         return -EINVAL;
 452 }
 453
 454 static int rk322x_clk_set_parent(struct clk *clk, struct clk *parent)
 455 {
 456         switch (clk->id) {
 457         case SCLK_MAC:
 458                 return rk322x_gmac_set_parent(clk, parent);
 459         case SCLK_MAC_EXTCLK:
 460                 return rk322x_gmac_extclk_set_parent(clk, parent);
 461         }
 462
 463         debug("%s: unsupported clk %ld\n", __func__, clk->id);
 464         return -ENOENT;
 465 }
 466
 467 static struct clk_ops rk322x_clk_ops = {
 468         .get_rate       = rk322x_clk_get_rate,
 469         .set_rate       = rk322x_clk_set_rate,
 470         .set_parent     = rk322x_clk_set_parent,
 471 };
 472
 473 static int rk322x_clk_ofdata_to_platdata(struct udevice *dev)
 474 {
 475         struct rk322x_clk_priv *priv = dev_get_priv(dev);
 476
 477         priv->cru = dev_read_addr_ptr(dev);
 478
 479         return 0;
 480 }
 481
 482 static int rk322x_clk_probe(struct udevice *dev)
 483 {
 484         struct rk322x_clk_priv *priv = dev_get_priv(dev);
 485
 486         rkclk_init(priv->cru);
 487
 488         return 0;
 489 }
 490
 491 static int rk322x_clk_bind(struct udevice *dev)
 492 {
 493         int ret;
 494         struct udevice *sys_child;
 495         struct sysreset_reg *priv;
 496
 497         /* The reset driver does not have a device node, so bind it here */
 498         ret = device_bind_driver(dev, "rockchip_sysreset", "sysreset",
 499                                  &sys_child);
 500         if (ret) {
 501                 debug("Warning: No sysreset driver: ret=%d\n", ret);
 502         } else {
 503                 priv = malloc(sizeof(struct sysreset_reg));
 504                 priv->glb_srst_fst_value = offsetof(struct rk322x_cru,
 505                                                     cru_glb_srst_fst_value);
 506                 priv->glb_srst_snd_value = offsetof(struct rk322x_cru,
 507                                                     cru_glb_srst_snd_value);
 508                 sys_child->priv = priv;
 509         }
 510
 511 #if CONFIG_IS_ENABLED(CONFIG_RESET_ROCKCHIP)
 512         ret = offsetof(struct rk322x_cru, cru_softrst_con[0]);
 513         ret = rockchip_reset_bind(dev, ret, 9);
 514         if (ret)
 515                 debug("Warning: software reset driver bind faile\n");
 516 #endif
 517
 518         return 0;
 519 }
 520
 521 static const struct udevice_id rk322x_clk_ids[] = {
 522         { .compatible = "rockchip,rk3228-cru" },
 523         { }
 524 };
 525
 526 U_BOOT_DRIVER(rockchip_rk322x_cru) = {
 527         .name           = "clk_rk322x",
 528         .id             = UCLASS_CLK,
 529         .of_match       = rk322x_clk_ids,
 530         .priv_auto_alloc_size = sizeof(struct rk322x_clk_priv),
 531         .ofdata_to_platdata = rk322x_clk_ofdata_to_platdata,
 532         .ops            = &rk322x_clk_ops,
 533         .bind           = rk322x_clk_bind,
 534         .probe          = rk322x_clk_probe,
 535 };