drivers/clk/rockchip/clk_rk3188.c

   1 /*
   2  * (C) Copyright 2015 Google, Inc
   3  * (C) Copyright 2016 Heiko Stuebner <heiko@sntech.de>
   4  *
   5  * SPDX-License-Identifier:     GPL-2.0
   6  */
   7
   8 #include <common.h>
   9 #include <clk-uclass.h>
  10 #include <dm.h>
  11 #include <dt-structs.h>
  12 #include <errno.h>
  13 #include <mapmem.h>
  14 #include <syscon.h>
  15 #include <asm/io.h>
  16 #include <asm/arch/clock.h>
  17 #include <asm/arch/cru_rk3188.h>
  18 #include <asm/arch/grf_rk3188.h>
  19 #include <asm/arch/hardware.h>
  20 #include <dt-bindings/clock/rk3188-cru.h>
  21 #include <dm/device-internal.h>
  22 #include <dm/lists.h>
  23 #include <dm/uclass-internal.h>
  24 #include <linux/log2.h>
  25
  26 DECLARE_GLOBAL_DATA_PTR;
  27
  28 enum rk3188_clk_type {
  29         RK3188_CRU,
  30         RK3188A_CRU,
  31 };
  32
  33 struct rk3188_clk_plat {
  34 #if CONFIG_IS_ENABLED(OF_PLATDATA)
  35         struct dtd_rockchip_rk3188_cru dtd;
  36 #endif
  37 };
  38
  39 struct pll_div {
  40         u32 nr;
  41         u32 nf;
  42         u32 no;
  43 };
  44
  45 enum {
  46         VCO_MAX_HZ      = 2200U * 1000000,
  47         VCO_MIN_HZ      = 440 * 1000000,
  48         OUTPUT_MAX_HZ   = 2200U * 1000000,
  49         OUTPUT_MIN_HZ   = 30 * 1000000,
  50         FREF_MAX_HZ     = 2200U * 1000000,
  51         FREF_MIN_HZ     = 30 * 1000,
  52 };
  53
  54 enum {
  55         /* PLL CON0 */
  56         PLL_OD_MASK             = 0x0f,
  57
  58         /* PLL CON1 */
  59         PLL_NF_MASK             = 0x1fff,
  60
  61         /* PLL CON2 */
  62         PLL_BWADJ_MASK          = 0x0fff,
  63
  64         /* PLL CON3 */
  65         PLL_RESET_SHIFT         = 5,
  66
  67         /* GRF_SOC_STATUS0 */
  68         SOCSTS_DPLL_LOCK        = 1 << 5,
  69         SOCSTS_APLL_LOCK        = 1 << 6,
  70         SOCSTS_CPLL_LOCK        = 1 << 7,
  71         SOCSTS_GPLL_LOCK        = 1 << 8,
  72 };
  73
  74 #define DIV_TO_RATE(input_rate, div)    ((input_rate) / ((div) + 1))
  75
  76 #define PLL_DIVISORS(hz, _nr, _no) {\
  77         .nr = _nr, .nf = (u32)((u64)hz * _nr * _no / OSC_HZ), .no = _no};\
  78         _Static_assert(((u64)hz * _nr * _no / OSC_HZ) * OSC_HZ /\
  79                        (_nr * _no) == hz, #hz "Hz cannot be hit with PLL "\
  80                        "divisors on line " __stringify(__LINE__));
  81
  82 /* Keep divisors as low as possible to reduce jitter and power usage */
  83 #ifdef CONFIG_SPL_BUILD
  84 static const struct pll_div gpll_init_cfg = PLL_DIVISORS(GPLL_HZ, 2, 2);
  85 static const struct pll_div cpll_init_cfg = PLL_DIVISORS(CPLL_HZ, 1, 2);
  86 #endif
  87
  88 static int rkclk_set_pll(struct rk3188_cru *cru, enum rk_clk_id clk_id,
  89                          const struct pll_div *div, bool has_bwadj)
  90 {
  91         int pll_id = rk_pll_id(clk_id);
  92         struct rk3188_pll *pll = &cru->pll[pll_id];
  93         /* All PLLs have same VCO and output frequency range restrictions. */
  94         uint vco_hz = OSC_HZ / 1000 * div->nf / div->nr * 1000;
  95         uint output_hz = vco_hz / div->no;
  96
  97         debug("PLL at %x: nf=%d, nr=%d, no=%d, vco=%u Hz, output=%u Hz\n",
  98               (uint)pll, div->nf, div->nr, div->no, vco_hz, output_hz);
  99         assert(vco_hz >= VCO_MIN_HZ && vco_hz <= VCO_MAX_HZ &&
 100                output_hz >= OUTPUT_MIN_HZ && output_hz <= OUTPUT_MAX_HZ &&
 101                (div->no == 1 || !(div->no % 2)));
 102
 103         /* enter reset */
 104         rk_setreg(&pll->con3, 1 << PLL_RESET_SHIFT);
 105
 106         rk_clrsetreg(&pll->con0,
 107                      CLKR_MASK << CLKR_SHIFT | PLL_OD_MASK,
 108                      ((div->nr - 1) << CLKR_SHIFT) | (div->no - 1));
 109         rk_clrsetreg(&pll->con1, CLKF_MASK, div->nf - 1);
 110
 111         if (has_bwadj)
 112                 rk_clrsetreg(&pll->con2, PLL_BWADJ_MASK, (div->nf >> 1) - 1);
 113
 114         udelay(10);
 115
 116         /* return from reset */
 117         rk_clrreg(&pll->con3, 1 << PLL_RESET_SHIFT);
 118
 119         return 0;
 120 }
 121
 122 static int rkclk_configure_ddr(struct rk3188_cru *cru, struct rk3188_grf *grf,
 123                                unsigned int hz, bool has_bwadj)
 124 {
 125         static const struct pll_div dpll_cfg[] = {
 126                 {.nf = 25, .nr = 2, .no = 1},
 127                 {.nf = 400, .nr = 9, .no = 2},
 128                 {.nf = 500, .nr = 9, .no = 2},
 129                 {.nf = 100, .nr = 3, .no = 1},
 130         };
 131         int cfg;
 132
 133         switch (hz) {
 134         case 300000000:
 135                 cfg = 0;
 136                 break;
 137         case 533000000: /* actually 533.3P MHz */
 138                 cfg = 1;
 139                 break;
 140         case 666000000: /* actually 666.6P MHz */
 141                 cfg = 2;
 142                 break;
 143         case 800000000:
 144                 cfg = 3;
 145                 break;
 146         default:
 147                 debug("Unsupported SDRAM frequency");
 148                 return -EINVAL;
 149         }
 150
 151         /* pll enter slow-mode */
 152         rk_clrsetreg(&cru->cru_mode_con, DPLL_MODE_MASK << DPLL_MODE_SHIFT,
 153                      DPLL_MODE_SLOW << DPLL_MODE_SHIFT);
 154
 155         rkclk_set_pll(cru, CLK_DDR, &dpll_cfg[cfg], has_bwadj);
 156
 157         /* wait for pll lock */
 158         while (!(readl(&grf->soc_status0) & SOCSTS_DPLL_LOCK))
 159                 udelay(1);
 160
 161         /* PLL enter normal-mode */
 162         rk_clrsetreg(&cru->cru_mode_con, DPLL_MODE_MASK << DPLL_MODE_SHIFT,
 163                      DPLL_MODE_NORMAL << DPLL_MODE_SHIFT);
 164
 165         return 0;
 166 }
 167
 168 static int rkclk_configure_cpu(struct rk3188_cru *cru, struct rk3188_grf *grf,
 169                               unsigned int hz, bool has_bwadj)
 170 {
 171         static const struct pll_div apll_cfg[] = {
 172                 {.nf = 50, .nr = 1, .no = 2},
 173                 {.nf = 67, .nr = 1, .no = 1},
 174         };
 175         int div_core_peri, div_aclk_core, cfg;
 176
 177         /*
 178          * We support two possible frequencies, the safe 600MHz
 179          * which will work with default pmic settings and will
 180          * be set in SPL to get away from the 24MHz default and
 181          * the maximum of 1.6Ghz, which boards can set if they
 182          * were able to get pmic support for it.
 183          */
 184         switch (hz) {
 185         case APLL_SAFE_HZ:
 186                 cfg = 0;
 187                 div_core_peri = 1;
 188                 div_aclk_core = 3;
 189                 break;
 190         case APLL_HZ:
 191                 cfg = 1;
 192                 div_core_peri = 2;
 193                 div_aclk_core = 3;
 194                 break;
 195         default:
 196                 debug("Unsupported ARMCLK frequency");
 197                 return -EINVAL;
 198         }
 199
 200         /* pll enter slow-mode */
 201         rk_clrsetreg(&cru->cru_mode_con, APLL_MODE_MASK << APLL_MODE_SHIFT,
 202                      APLL_MODE_SLOW << APLL_MODE_SHIFT);
 203
 204         rkclk_set_pll(cru, CLK_ARM, &apll_cfg[cfg], has_bwadj);
 205
 206         /* waiting for pll lock */
 207         while (!(readl(&grf->soc_status0) & SOCSTS_APLL_LOCK))
 208                 udelay(1);
 209
 210         /* Set divider for peripherals attached to the cpu core. */
 211         rk_clrsetreg(&cru->cru_clksel_con[0],
 212                 CORE_PERI_DIV_MASK << CORE_PERI_DIV_SHIFT,
 213                 div_core_peri << CORE_PERI_DIV_SHIFT);
 214
 215         /* set up dependent divisor for aclk_core */
 216         rk_clrsetreg(&cru->cru_clksel_con[1],
 217                 CORE_ACLK_DIV_MASK << CORE_ACLK_DIV_SHIFT,
 218                 div_aclk_core << CORE_ACLK_DIV_SHIFT);
 219
 220         /* PLL enter normal-mode */
 221         rk_clrsetreg(&cru->cru_mode_con, APLL_MODE_MASK << APLL_MODE_SHIFT,
 222                      APLL_MODE_NORMAL << APLL_MODE_SHIFT);
 223
 224         return hz;
 225 }
 226
 227 /* Get pll rate by id */
 228 static uint32_t rkclk_pll_get_rate(struct rk3188_cru *cru,
 229                                    enum rk_clk_id clk_id)
 230 {
 231         uint32_t nr, no, nf;
 232         uint32_t con;
 233         int pll_id = rk_pll_id(clk_id);
 234         struct rk3188_pll *pll = &cru->pll[pll_id];
 235         static u8 clk_shift[CLK_COUNT] = {
 236                 0xff, APLL_MODE_SHIFT, DPLL_MODE_SHIFT, CPLL_MODE_SHIFT,
 237                 GPLL_MODE_SHIFT
 238         };
 239         uint shift;
 240
 241         con = readl(&cru->cru_mode_con);
 242         shift = clk_shift[clk_id];
 243         switch ((con >> shift) & APLL_MODE_MASK) {
 244         case APLL_MODE_SLOW:
 245                 return OSC_HZ;
 246         case APLL_MODE_NORMAL:
 247                 /* normal mode */
 248                 con = readl(&pll->con0);
 249                 no = ((con >> CLKOD_SHIFT) & CLKOD_MASK) + 1;
 250                 nr = ((con >> CLKR_SHIFT) & CLKR_MASK) + 1;
 251                 con = readl(&pll->con1);
 252                 nf = ((con >> CLKF_SHIFT) & CLKF_MASK) + 1;
 253
 254                 return (24 * nf / (nr * no)) * 1000000;
 255         case APLL_MODE_DEEP:
 256         default:
 257                 return 32768;
 258         }
 259 }
 260
 261 static ulong rockchip_mmc_get_clk(struct rk3188_cru *cru, uint gclk_rate,
 262                                   int periph)
 263 {
 264         uint div;
 265         u32 con;
 266
 267         switch (periph) {
 268         case HCLK_EMMC:
 269         case SCLK_EMMC:
 270                 con = readl(&cru->cru_clksel_con[12]);
 271                 div = (con >> EMMC_DIV_SHIFT) & EMMC_DIV_MASK;
 272                 break;
 273         case HCLK_SDMMC:
 274         case SCLK_SDMMC:
 275                 con = readl(&cru->cru_clksel_con[11]);
 276                 div = (con >> MMC0_DIV_SHIFT) & MMC0_DIV_MASK;
 277                 break;
 278         case HCLK_SDIO:
 279         case SCLK_SDIO:
 280                 con = readl(&cru->cru_clksel_con[12]);
 281                 div = (con >> SDIO_DIV_SHIFT) & SDIO_DIV_MASK;
 282                 break;
 283         default:
 284                 return -EINVAL;
 285         }
 286
 287         return DIV_TO_RATE(gclk_rate, div) / 2;
 288 }
 289
 290 static ulong rockchip_mmc_set_clk(struct rk3188_cru *cru, uint gclk_rate,
 291                                   int  periph, uint freq)
 292 {
 293         int src_clk_div;
 294
 295         debug("%s: gclk_rate=%u\n", __func__, gclk_rate);
 296         /* mmc clock defaulg div 2 internal, need provide double in cru */
 297         src_clk_div = DIV_ROUND_UP(gclk_rate / 2, freq) - 1;
 298         assert(src_clk_div <= 0x3f);
 299
 300         switch (periph) {
 301         case HCLK_EMMC:
 302         case SCLK_EMMC:
 303                 rk_clrsetreg(&cru->cru_clksel_con[12],
 304                              EMMC_DIV_MASK << EMMC_DIV_SHIFT,
 305                              src_clk_div << EMMC_DIV_SHIFT);
 306                 break;
 307         case HCLK_SDMMC:
 308         case SCLK_SDMMC:
 309                 rk_clrsetreg(&cru->cru_clksel_con[11],
 310                              MMC0_DIV_MASK << MMC0_DIV_SHIFT,
 311                              src_clk_div << MMC0_DIV_SHIFT);
 312                 break;
 313         case HCLK_SDIO:
 314         case SCLK_SDIO:
 315                 rk_clrsetreg(&cru->cru_clksel_con[12],
 316                              SDIO_DIV_MASK << SDIO_DIV_SHIFT,
 317                              src_clk_div << SDIO_DIV_SHIFT);
 318                 break;
 319         default:
 320                 return -EINVAL;
 321         }
 322
 323         return rockchip_mmc_get_clk(cru, gclk_rate, periph);
 324 }
 325
 326 static ulong rockchip_spi_get_clk(struct rk3188_cru *cru, uint gclk_rate,
 327                                   int periph)
 328 {
 329         uint div;
 330         u32 con;
 331
 332         switch (periph) {
 333         case SCLK_SPI0:
 334                 con = readl(&cru->cru_clksel_con[25]);
 335                 div = (con >> SPI0_DIV_SHIFT) & SPI0_DIV_MASK;
 336                 break;
 337         case SCLK_SPI1:
 338                 con = readl(&cru->cru_clksel_con[25]);
 339                 div = (con >> SPI1_DIV_SHIFT) & SPI1_DIV_MASK;
 340                 break;
 341         default:
 342                 return -EINVAL;
 343         }
 344
 345         return DIV_TO_RATE(gclk_rate, div);
 346 }
 347
 348 static ulong rockchip_spi_set_clk(struct rk3188_cru *cru, uint gclk_rate,
 349                                   int periph, uint freq)
 350 {
 351         int src_clk_div = DIV_ROUND_UP(gclk_rate, freq) - 1;
 352
 353         assert(src_clk_div < 128);
 354         switch (periph) {
 355         case SCLK_SPI0:
 356                 assert(src_clk_div <= SPI0_DIV_MASK);
 357                 rk_clrsetreg(&cru->cru_clksel_con[25],
 358                              SPI0_DIV_MASK << SPI0_DIV_SHIFT,
 359                              src_clk_div << SPI0_DIV_SHIFT);
 360                 break;
 361         case SCLK_SPI1:
 362                 assert(src_clk_div <= SPI1_DIV_MASK);
 363                 rk_clrsetreg(&cru->cru_clksel_con[25],
 364                              SPI1_DIV_MASK << SPI1_DIV_SHIFT,
 365                              src_clk_div << SPI1_DIV_SHIFT);
 366                 break;
 367         default:
 368                 return -EINVAL;
 369         }
 370
 371         return rockchip_spi_get_clk(cru, gclk_rate, periph);
 372 }
 373
 374 #ifdef CONFIG_SPL_BUILD
 375 static void rkclk_init(struct rk3188_cru *cru, struct rk3188_grf *grf,
 376                        bool has_bwadj)
 377 {
 378         u32 aclk_div, hclk_div, pclk_div, h2p_div;
 379
 380         /* pll enter slow-mode */
 381         rk_clrsetreg(&cru->cru_mode_con,
 382                      GPLL_MODE_MASK << GPLL_MODE_SHIFT |
 383                      CPLL_MODE_MASK << CPLL_MODE_SHIFT,
 384                      GPLL_MODE_SLOW << GPLL_MODE_SHIFT |
 385                      CPLL_MODE_SLOW << CPLL_MODE_SHIFT);
 386
 387         /* init pll */
 388         rkclk_set_pll(cru, CLK_GENERAL, &gpll_init_cfg, has_bwadj);
 389         rkclk_set_pll(cru, CLK_CODEC, &cpll_init_cfg, has_bwadj);
 390
 391         /* waiting for pll lock */
 392         while ((readl(&grf->soc_status0) &
 393                         (SOCSTS_CPLL_LOCK | SOCSTS_GPLL_LOCK)) !=
 394                         (SOCSTS_CPLL_LOCK | SOCSTS_GPLL_LOCK))
 395                 udelay(1);
 396
 397         /*
 398          * cpu clock pll source selection and
 399          * reparent aclk_cpu_pre from apll to gpll
 400          * set up dependent divisors for PCLK/HCLK and ACLK clocks.
 401          */
 402         aclk_div = DIV_ROUND_UP(GPLL_HZ, CPU_ACLK_HZ) - 1;
 403         assert((aclk_div + 1) * CPU_ACLK_HZ == GPLL_HZ && aclk_div <= 0x1f);
 404
 405         rk_clrsetreg(&cru->cru_clksel_con[0],
 406                      CPU_ACLK_PLL_MASK << CPU_ACLK_PLL_SHIFT |
 407                      A9_CPU_DIV_MASK << A9_CPU_DIV_SHIFT,
 408                      CPU_ACLK_PLL_SELECT_GPLL << CPU_ACLK_PLL_SHIFT |
 409                      aclk_div << A9_CPU_DIV_SHIFT);
 410
 411         hclk_div = ilog2(CPU_ACLK_HZ / CPU_HCLK_HZ);
 412         assert((1 << hclk_div) * CPU_HCLK_HZ == CPU_ACLK_HZ && hclk_div < 0x3);
 413         pclk_div = ilog2(CPU_ACLK_HZ / CPU_PCLK_HZ);
 414         assert((1 << pclk_div) * CPU_PCLK_HZ == CPU_ACLK_HZ && pclk_div < 0x4);
 415         h2p_div = ilog2(CPU_HCLK_HZ / CPU_H2P_HZ);
 416         assert((1 << h2p_div) * CPU_H2P_HZ == CPU_HCLK_HZ && pclk_div < 0x3);
 417
 418         rk_clrsetreg(&cru->cru_clksel_con[1],
 419                      AHB2APB_DIV_MASK << AHB2APB_DIV_SHIFT |
 420                      CPU_PCLK_DIV_MASK << CPU_PCLK_DIV_SHIFT |
 421                      CPU_HCLK_DIV_MASK << CPU_HCLK_DIV_SHIFT,
 422                      h2p_div << AHB2APB_DIV_SHIFT |
 423                      pclk_div << CPU_PCLK_DIV_SHIFT |
 424                      hclk_div << CPU_HCLK_DIV_SHIFT);
 425
 426         /*
 427          * peri clock pll source selection and
 428          * set up dependent divisors for PCLK/HCLK and ACLK clocks.
 429          */
 430         aclk_div = GPLL_HZ / PERI_ACLK_HZ - 1;
 431         assert((aclk_div + 1) * PERI_ACLK_HZ == GPLL_HZ && aclk_div < 0x1f);
 432
 433         hclk_div = ilog2(PERI_ACLK_HZ / PERI_HCLK_HZ);
 434         assert((1 << hclk_div) * PERI_HCLK_HZ ==
 435                 PERI_ACLK_HZ && (hclk_div < 0x4));
 436
 437         pclk_div = ilog2(PERI_ACLK_HZ / PERI_PCLK_HZ);
 438         assert((1 << pclk_div) * PERI_PCLK_HZ ==
 439                 PERI_ACLK_HZ && (pclk_div < 0x4));
 440
 441         rk_clrsetreg(&cru->cru_clksel_con[10],
 442                      PERI_PCLK_DIV_MASK << PERI_PCLK_DIV_SHIFT |
 443                      PERI_HCLK_DIV_MASK << PERI_HCLK_DIV_SHIFT |
 444                      PERI_ACLK_DIV_MASK << PERI_ACLK_DIV_SHIFT,
 445                      PERI_SEL_GPLL << PERI_SEL_PLL_SHIFT |
 446                      pclk_div << PERI_PCLK_DIV_SHIFT |
 447                      hclk_div << PERI_HCLK_DIV_SHIFT |
 448                      aclk_div << PERI_ACLK_DIV_SHIFT);
 449
 450         /* PLL enter normal-mode */
 451         rk_clrsetreg(&cru->cru_mode_con,
 452                      GPLL_MODE_MASK << GPLL_MODE_SHIFT |
 453                      CPLL_MODE_MASK << CPLL_MODE_SHIFT,
 454                      GPLL_MODE_NORMAL << GPLL_MODE_SHIFT |
 455                      CPLL_MODE_NORMAL << CPLL_MODE_SHIFT);
 456
 457         rockchip_mmc_set_clk(cru, PERI_HCLK_HZ, HCLK_SDMMC, 16000000);
 458 }
 459 #endif
 460
 461 static ulong rk3188_clk_get_rate(struct clk *clk)
 462 {
 463         struct rk3188_clk_priv *priv = dev_get_priv(clk->dev);
 464         ulong new_rate, gclk_rate;
 465
 466         gclk_rate = rkclk_pll_get_rate(priv->cru, CLK_GENERAL);
 467         switch (clk->id) {
 468         case 1 ... 4:
 469                 new_rate = rkclk_pll_get_rate(priv->cru, clk->id);
 470                 break;
 471         case HCLK_EMMC:
 472         case HCLK_SDMMC:
 473         case HCLK_SDIO:
 474         case SCLK_EMMC:
 475         case SCLK_SDMMC:
 476         case SCLK_SDIO:
 477                 new_rate = rockchip_mmc_get_clk(priv->cru, PERI_HCLK_HZ,
 478                                                 clk->id);
 479                 break;
 480         case SCLK_SPI0:
 481         case SCLK_SPI1:
 482                 new_rate = rockchip_spi_get_clk(priv->cru, PERI_PCLK_HZ,
 483                                                 clk->id);
 484                 break;
 485         case PCLK_I2C0:
 486         case PCLK_I2C1:
 487         case PCLK_I2C2:
 488         case PCLK_I2C3:
 489         case PCLK_I2C4:
 490                 return gclk_rate;
 491         default:
 492                 return -ENOENT;
 493         }
 494
 495         return new_rate;
 496 }
 497
 498 static ulong rk3188_clk_set_rate(struct clk *clk, ulong rate)
 499 {
 500         struct rk3188_clk_priv *priv = dev_get_priv(clk->dev);
 501         struct rk3188_cru *cru = priv->cru;
 502         ulong new_rate;
 503
 504         switch (clk->id) {
 505         case PLL_APLL:
 506                 new_rate = rkclk_configure_cpu(priv->cru, priv->grf, rate,
 507                                                priv->has_bwadj);
 508                 break;
 509         case CLK_DDR:
 510                 new_rate = rkclk_configure_ddr(priv->cru, priv->grf, rate,
 511                                                priv->has_bwadj);
 512                 break;
 513         case HCLK_EMMC:
 514         case HCLK_SDMMC:
 515         case HCLK_SDIO:
 516         case SCLK_EMMC:
 517         case SCLK_SDMMC:
 518         case SCLK_SDIO:
 519                 new_rate = rockchip_mmc_set_clk(cru, PERI_HCLK_HZ,
 520                                                 clk->id, rate);
 521                 break;
 522         case SCLK_SPI0:
 523         case SCLK_SPI1:
 524                 new_rate = rockchip_spi_set_clk(cru, PERI_PCLK_HZ,
 525                                                 clk->id, rate);
 526                 break;
 527         default:
 528                 return -ENOENT;
 529         }
 530
 531         return new_rate;
 532 }
 533
 534 static struct clk_ops rk3188_clk_ops = {
 535         .get_rate       = rk3188_clk_get_rate,
 536         .set_rate       = rk3188_clk_set_rate,
 537 };
 538
 539 static int rk3188_clk_ofdata_to_platdata(struct udevice *dev)
 540 {
 541 #if !CONFIG_IS_ENABLED(OF_PLATDATA)
 542         struct rk3188_clk_priv *priv = dev_get_priv(dev);
 543
 544         priv->cru = (struct rk3188_cru *)devfdt_get_addr(dev);
 545 #endif
 546
 547         return 0;
 548 }
 549
 550 static int rk3188_clk_probe(struct udevice *dev)
 551 {
 552         struct rk3188_clk_priv *priv = dev_get_priv(dev);
 553         enum rk3188_clk_type type = dev_get_driver_data(dev);
 554
 555         priv->grf = syscon_get_first_range(ROCKCHIP_SYSCON_GRF);
 556         if (IS_ERR(priv->grf))
 557                 return PTR_ERR(priv->grf);
 558         priv->has_bwadj = (type == RK3188A_CRU) ? 1 : 0;
 559
 560 #ifdef CONFIG_SPL_BUILD
 561 #if CONFIG_IS_ENABLED(OF_PLATDATA)
 562         struct rk3188_clk_plat *plat = dev_get_platdata(dev);
 563
 564         priv->cru = map_sysmem(plat->dtd.reg[0], plat->dtd.reg[1]);
 565 #endif
 566
 567         rkclk_init(priv->cru, priv->grf, priv->has_bwadj);
 568 #endif
 569
 570         return 0;
 571 }
 572
 573 static int rk3188_clk_bind(struct udevice *dev)
 574 {
 575         int ret;
 576         struct udevice *sys_child;
 577         struct sysreset_reg *priv;
 578
 579         /* The reset driver does not have a device node, so bind it here */
 580         ret = device_bind_driver(dev, "rockchip_sysreset", "sysreset",
 581                                  &sys_child);
 582         if (ret) {
 583                 debug("Warning: No sysreset driver: ret=%d\n", ret);
 584         } else {
 585                 priv = malloc(sizeof(struct sysreset_reg));
 586                 priv->glb_srst_fst_value = offsetof(struct rk3188_cru,
 587                                                     cru_glb_srst_fst_value);
 588                 priv->glb_srst_snd_value = offsetof(struct rk3188_cru,
 589                                                     cru_glb_srst_snd_value);
 590                 sys_child->priv = priv;
 591         }
 592
 593         return 0;
 594 }
 595
 596 static const struct udevice_id rk3188_clk_ids[] = {
 597         { .compatible = "rockchip,rk3188-cru", .data = RK3188_CRU },
 598         { .compatible = "rockchip,rk3188a-cru", .data = RK3188A_CRU },
 599         { }
 600 };
 601
 602 U_BOOT_DRIVER(rockchip_rk3188_cru) = {
 603         .name                   = "rockchip_rk3188_cru",
 604         .id                     = UCLASS_CLK,
 605         .of_match               = rk3188_clk_ids,
 606         .priv_auto_alloc_size   = sizeof(struct rk3188_clk_priv),
 607         .platdata_auto_alloc_size = sizeof(struct rk3188_clk_plat),
 608         .ops                    = &rk3188_clk_ops,
 609         .bind                   = rk3188_clk_bind,
 610         .ofdata_to_platdata     = rk3188_clk_ofdata_to_platdata,
 611         .probe                  = rk3188_clk_probe,
 612 };