drivers/clk/rockchip/clk_rk3399.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * (C) Copyright 2015 Google, Inc
   4  * (C) 2017 Theobroma Systems Design und Consulting GmbH
   5  */
   6
   7 #include <common.h>
   8 #include <clk-uclass.h>
   9 #include <dm.h>
  10 #include <dt-structs.h>
  11 #include <errno.h>
  12 #include <mapmem.h>
  13 #include <syscon.h>
  14 #include <bitfield.h>
  15 #include <asm/io.h>
  16 #include <asm/arch-rockchip/clock.h>
  17 #include <asm/arch-rockchip/cru_rk3399.h>
  18 #include <asm/arch-rockchip/hardware.h>
  19 #include <dm/lists.h>
  20 #include <dt-bindings/clock/rk3399-cru.h>
  21
  22 #if CONFIG_IS_ENABLED(OF_PLATDATA)
  23 struct rk3399_clk_plat {
  24         struct dtd_rockchip_rk3399_cru dtd;
  25 };
  26
  27 struct rk3399_pmuclk_plat {
  28         struct dtd_rockchip_rk3399_pmucru dtd;
  29 };
  30 #endif
  31
  32 struct pll_div {
  33         u32 refdiv;
  34         u32 fbdiv;
  35         u32 postdiv1;
  36         u32 postdiv2;
  37         u32 frac;
  38 };
  39
  40 #define RATE_TO_DIV(input_rate, output_rate) \
  41         ((input_rate) / (output_rate) - 1)
  42 #define DIV_TO_RATE(input_rate, div)            ((input_rate) / ((div) + 1))
  43
  44 #define PLL_DIVISORS(hz, _refdiv, _postdiv1, _postdiv2) {\
  45         .refdiv = _refdiv,\
  46         .fbdiv = (u32)((u64)hz * _refdiv * _postdiv1 * _postdiv2 / OSC_HZ),\
  47         .postdiv1 = _postdiv1, .postdiv2 = _postdiv2};
  48
  49 #if defined(CONFIG_SPL_BUILD)
  50 static const struct pll_div gpll_init_cfg = PLL_DIVISORS(GPLL_HZ, 2, 2, 1);
  51 static const struct pll_div cpll_init_cfg = PLL_DIVISORS(CPLL_HZ, 1, 2, 2);
  52 #else
  53 static const struct pll_div ppll_init_cfg = PLL_DIVISORS(PPLL_HZ, 2, 2, 1);
  54 #endif
  55
  56 static const struct pll_div apll_l_1600_cfg = PLL_DIVISORS(1600 * MHz, 3, 1, 1);
  57 static const struct pll_div apll_l_600_cfg = PLL_DIVISORS(600 * MHz, 1, 2, 1);
  58
  59 static const struct pll_div *apll_l_cfgs[] = {
  60         [APLL_L_1600_MHZ] = &apll_l_1600_cfg,
  61         [APLL_L_600_MHZ] = &apll_l_600_cfg,
  62 };
  63
  64 static const struct pll_div apll_b_600_cfg = PLL_DIVISORS(600 * MHz, 1, 2, 1);
  65 static const struct pll_div *apll_b_cfgs[] = {
  66         [APLL_B_600_MHZ] = &apll_b_600_cfg,
  67 };
  68
  69 enum {
  70         /* PLL_CON0 */
  71         PLL_FBDIV_MASK                  = 0xfff,
  72         PLL_FBDIV_SHIFT                 = 0,
  73
  74         /* PLL_CON1 */
  75         PLL_POSTDIV2_SHIFT              = 12,
  76         PLL_POSTDIV2_MASK               = 0x7 << PLL_POSTDIV2_SHIFT,
  77         PLL_POSTDIV1_SHIFT              = 8,
  78         PLL_POSTDIV1_MASK               = 0x7 << PLL_POSTDIV1_SHIFT,
  79         PLL_REFDIV_MASK                 = 0x3f,
  80         PLL_REFDIV_SHIFT                = 0,
  81
  82         /* PLL_CON2 */
  83         PLL_LOCK_STATUS_SHIFT           = 31,
  84         PLL_LOCK_STATUS_MASK            = 1 << PLL_LOCK_STATUS_SHIFT,
  85         PLL_FRACDIV_MASK                = 0xffffff,
  86         PLL_FRACDIV_SHIFT               = 0,
  87
  88         /* PLL_CON3 */
  89         PLL_MODE_SHIFT                  = 8,
  90         PLL_MODE_MASK                   = 3 << PLL_MODE_SHIFT,
  91         PLL_MODE_SLOW                   = 0,
  92         PLL_MODE_NORM,
  93         PLL_MODE_DEEP,
  94         PLL_DSMPD_SHIFT                 = 3,
  95         PLL_DSMPD_MASK                  = 1 << PLL_DSMPD_SHIFT,
  96         PLL_INTEGER_MODE                = 1,
  97
  98         /* PMUCRU_CLKSEL_CON0 */
  99         PMU_PCLK_DIV_CON_MASK           = 0x1f,
 100         PMU_PCLK_DIV_CON_SHIFT          = 0,
 101
 102         /* PMUCRU_CLKSEL_CON1 */
 103         SPI3_PLL_SEL_SHIFT              = 7,
 104         SPI3_PLL_SEL_MASK               = 1 << SPI3_PLL_SEL_SHIFT,
 105         SPI3_PLL_SEL_24M                = 0,
 106         SPI3_PLL_SEL_PPLL               = 1,
 107         SPI3_DIV_CON_SHIFT              = 0x0,
 108         SPI3_DIV_CON_MASK               = 0x7f,
 109
 110         /* PMUCRU_CLKSEL_CON2 */
 111         I2C_DIV_CON_MASK                = 0x7f,
 112         CLK_I2C8_DIV_CON_SHIFT          = 8,
 113         CLK_I2C0_DIV_CON_SHIFT          = 0,
 114
 115         /* PMUCRU_CLKSEL_CON3 */
 116         CLK_I2C4_DIV_CON_SHIFT          = 0,
 117
 118         /* CLKSEL_CON0 */
 119         ACLKM_CORE_L_DIV_CON_SHIFT      = 8,
 120         ACLKM_CORE_L_DIV_CON_MASK       = 0x1f << ACLKM_CORE_L_DIV_CON_SHIFT,
 121         CLK_CORE_L_PLL_SEL_SHIFT        = 6,
 122         CLK_CORE_L_PLL_SEL_MASK         = 3 << CLK_CORE_L_PLL_SEL_SHIFT,
 123         CLK_CORE_L_PLL_SEL_ALPLL        = 0x0,
 124         CLK_CORE_L_PLL_SEL_ABPLL        = 0x1,
 125         CLK_CORE_L_PLL_SEL_DPLL         = 0x10,
 126         CLK_CORE_L_PLL_SEL_GPLL         = 0x11,
 127         CLK_CORE_L_DIV_MASK             = 0x1f,
 128         CLK_CORE_L_DIV_SHIFT            = 0,
 129
 130         /* CLKSEL_CON1 */
 131         PCLK_DBG_L_DIV_SHIFT            = 0x8,
 132         PCLK_DBG_L_DIV_MASK             = 0x1f << PCLK_DBG_L_DIV_SHIFT,
 133         ATCLK_CORE_L_DIV_SHIFT          = 0,
 134         ATCLK_CORE_L_DIV_MASK           = 0x1f << ATCLK_CORE_L_DIV_SHIFT,
 135
 136         /* CLKSEL_CON2 */
 137         ACLKM_CORE_B_DIV_CON_SHIFT      = 8,
 138         ACLKM_CORE_B_DIV_CON_MASK       = 0x1f << ACLKM_CORE_B_DIV_CON_SHIFT,
 139         CLK_CORE_B_PLL_SEL_SHIFT        = 6,
 140         CLK_CORE_B_PLL_SEL_MASK         = 3 << CLK_CORE_B_PLL_SEL_SHIFT,
 141         CLK_CORE_B_PLL_SEL_ALPLL        = 0x0,
 142         CLK_CORE_B_PLL_SEL_ABPLL        = 0x1,
 143         CLK_CORE_B_PLL_SEL_DPLL         = 0x10,
 144         CLK_CORE_B_PLL_SEL_GPLL         = 0x11,
 145         CLK_CORE_B_DIV_MASK             = 0x1f,
 146         CLK_CORE_B_DIV_SHIFT            = 0,
 147
 148         /* CLKSEL_CON3 */
 149         PCLK_DBG_B_DIV_SHIFT            = 0x8,
 150         PCLK_DBG_B_DIV_MASK             = 0x1f << PCLK_DBG_B_DIV_SHIFT,
 151         ATCLK_CORE_B_DIV_SHIFT          = 0,
 152         ATCLK_CORE_B_DIV_MASK           = 0x1f << ATCLK_CORE_B_DIV_SHIFT,
 153
 154         /* CLKSEL_CON14 */
 155         PCLK_PERIHP_DIV_CON_SHIFT       = 12,
 156         PCLK_PERIHP_DIV_CON_MASK        = 0x7 << PCLK_PERIHP_DIV_CON_SHIFT,
 157         HCLK_PERIHP_DIV_CON_SHIFT       = 8,
 158         HCLK_PERIHP_DIV_CON_MASK        = 3 << HCLK_PERIHP_DIV_CON_SHIFT,
 159         ACLK_PERIHP_PLL_SEL_SHIFT       = 7,
 160         ACLK_PERIHP_PLL_SEL_MASK        = 1 << ACLK_PERIHP_PLL_SEL_SHIFT,
 161         ACLK_PERIHP_PLL_SEL_CPLL        = 0,
 162         ACLK_PERIHP_PLL_SEL_GPLL        = 1,
 163         ACLK_PERIHP_DIV_CON_SHIFT       = 0,
 164         ACLK_PERIHP_DIV_CON_MASK        = 0x1f,
 165
 166         /* CLKSEL_CON21 */
 167         ACLK_EMMC_PLL_SEL_SHIFT         = 7,
 168         ACLK_EMMC_PLL_SEL_MASK          = 0x1 << ACLK_EMMC_PLL_SEL_SHIFT,
 169         ACLK_EMMC_PLL_SEL_GPLL          = 0x1,
 170         ACLK_EMMC_DIV_CON_SHIFT         = 0,
 171         ACLK_EMMC_DIV_CON_MASK          = 0x1f,
 172
 173         /* CLKSEL_CON22 */
 174         CLK_EMMC_PLL_SHIFT              = 8,
 175         CLK_EMMC_PLL_MASK               = 0x7 << CLK_EMMC_PLL_SHIFT,
 176         CLK_EMMC_PLL_SEL_GPLL           = 0x1,
 177         CLK_EMMC_PLL_SEL_24M            = 0x5,
 178         CLK_EMMC_DIV_CON_SHIFT          = 0,
 179         CLK_EMMC_DIV_CON_MASK           = 0x7f << CLK_EMMC_DIV_CON_SHIFT,
 180
 181         /* CLKSEL_CON23 */
 182         PCLK_PERILP0_DIV_CON_SHIFT      = 12,
 183         PCLK_PERILP0_DIV_CON_MASK       = 0x7 << PCLK_PERILP0_DIV_CON_SHIFT,
 184         HCLK_PERILP0_DIV_CON_SHIFT      = 8,
 185         HCLK_PERILP0_DIV_CON_MASK       = 3 << HCLK_PERILP0_DIV_CON_SHIFT,
 186         ACLK_PERILP0_PLL_SEL_SHIFT      = 7,
 187         ACLK_PERILP0_PLL_SEL_MASK       = 1 << ACLK_PERILP0_PLL_SEL_SHIFT,
 188         ACLK_PERILP0_PLL_SEL_CPLL       = 0,
 189         ACLK_PERILP0_PLL_SEL_GPLL       = 1,
 190         ACLK_PERILP0_DIV_CON_SHIFT      = 0,
 191         ACLK_PERILP0_DIV_CON_MASK       = 0x1f,
 192
 193         /* CLKSEL_CON25 */
 194         PCLK_PERILP1_DIV_CON_SHIFT      = 8,
 195         PCLK_PERILP1_DIV_CON_MASK       = 0x7 << PCLK_PERILP1_DIV_CON_SHIFT,
 196         HCLK_PERILP1_PLL_SEL_SHIFT      = 7,
 197         HCLK_PERILP1_PLL_SEL_MASK       = 1 << HCLK_PERILP1_PLL_SEL_SHIFT,
 198         HCLK_PERILP1_PLL_SEL_CPLL       = 0,
 199         HCLK_PERILP1_PLL_SEL_GPLL       = 1,
 200         HCLK_PERILP1_DIV_CON_SHIFT      = 0,
 201         HCLK_PERILP1_DIV_CON_MASK       = 0x1f,
 202
 203         /* CLKSEL_CON26 */
 204         CLK_SARADC_DIV_CON_SHIFT        = 8,
 205         CLK_SARADC_DIV_CON_MASK         = GENMASK(15, 8),
 206         CLK_SARADC_DIV_CON_WIDTH        = 8,
 207
 208         /* CLKSEL_CON27 */
 209         CLK_TSADC_SEL_X24M              = 0x0,
 210         CLK_TSADC_SEL_SHIFT             = 15,
 211         CLK_TSADC_SEL_MASK              = 1 << CLK_TSADC_SEL_SHIFT,
 212         CLK_TSADC_DIV_CON_SHIFT         = 0,
 213         CLK_TSADC_DIV_CON_MASK          = 0x3ff,
 214
 215         /* CLKSEL_CON47 & CLKSEL_CON48 */
 216         ACLK_VOP_PLL_SEL_SHIFT          = 6,
 217         ACLK_VOP_PLL_SEL_MASK           = 0x3 << ACLK_VOP_PLL_SEL_SHIFT,
 218         ACLK_VOP_PLL_SEL_CPLL           = 0x1,
 219         ACLK_VOP_DIV_CON_SHIFT          = 0,
 220         ACLK_VOP_DIV_CON_MASK           = 0x1f << ACLK_VOP_DIV_CON_SHIFT,
 221
 222         /* CLKSEL_CON49 & CLKSEL_CON50 */
 223         DCLK_VOP_DCLK_SEL_SHIFT         = 11,
 224         DCLK_VOP_DCLK_SEL_MASK          = 1 << DCLK_VOP_DCLK_SEL_SHIFT,
 225         DCLK_VOP_DCLK_SEL_DIVOUT        = 0,
 226         DCLK_VOP_PLL_SEL_SHIFT          = 8,
 227         DCLK_VOP_PLL_SEL_MASK           = 3 << DCLK_VOP_PLL_SEL_SHIFT,
 228         DCLK_VOP_PLL_SEL_VPLL           = 0,
 229         DCLK_VOP_DIV_CON_MASK           = 0xff,
 230         DCLK_VOP_DIV_CON_SHIFT          = 0,
 231
 232         /* CLKSEL_CON58 */
 233         CLK_SPI_PLL_SEL_WIDTH = 1,
 234         CLK_SPI_PLL_SEL_MASK = ((1 < CLK_SPI_PLL_SEL_WIDTH) - 1),
 235         CLK_SPI_PLL_SEL_CPLL = 0,
 236         CLK_SPI_PLL_SEL_GPLL = 1,
 237         CLK_SPI_PLL_DIV_CON_WIDTH = 7,
 238         CLK_SPI_PLL_DIV_CON_MASK = ((1 << CLK_SPI_PLL_DIV_CON_WIDTH) - 1),
 239
 240         CLK_SPI5_PLL_DIV_CON_SHIFT      = 8,
 241         CLK_SPI5_PLL_SEL_SHIFT          = 15,
 242
 243         /* CLKSEL_CON59 */
 244         CLK_SPI1_PLL_SEL_SHIFT          = 15,
 245         CLK_SPI1_PLL_DIV_CON_SHIFT      = 8,
 246         CLK_SPI0_PLL_SEL_SHIFT          = 7,
 247         CLK_SPI0_PLL_DIV_CON_SHIFT      = 0,
 248
 249         /* CLKSEL_CON60 */
 250         CLK_SPI4_PLL_SEL_SHIFT          = 15,
 251         CLK_SPI4_PLL_DIV_CON_SHIFT      = 8,
 252         CLK_SPI2_PLL_SEL_SHIFT          = 7,
 253         CLK_SPI2_PLL_DIV_CON_SHIFT      = 0,
 254
 255         /* CLKSEL_CON61 */
 256         CLK_I2C_PLL_SEL_MASK            = 1,
 257         CLK_I2C_PLL_SEL_CPLL            = 0,
 258         CLK_I2C_PLL_SEL_GPLL            = 1,
 259         CLK_I2C5_PLL_SEL_SHIFT          = 15,
 260         CLK_I2C5_DIV_CON_SHIFT          = 8,
 261         CLK_I2C1_PLL_SEL_SHIFT          = 7,
 262         CLK_I2C1_DIV_CON_SHIFT          = 0,
 263
 264         /* CLKSEL_CON62 */
 265         CLK_I2C6_PLL_SEL_SHIFT          = 15,
 266         CLK_I2C6_DIV_CON_SHIFT          = 8,
 267         CLK_I2C2_PLL_SEL_SHIFT          = 7,
 268         CLK_I2C2_DIV_CON_SHIFT          = 0,
 269
 270         /* CLKSEL_CON63 */
 271         CLK_I2C7_PLL_SEL_SHIFT          = 15,
 272         CLK_I2C7_DIV_CON_SHIFT          = 8,
 273         CLK_I2C3_PLL_SEL_SHIFT          = 7,
 274         CLK_I2C3_DIV_CON_SHIFT          = 0,
 275
 276         /* CRU_SOFTRST_CON4 */
 277         RESETN_DDR0_REQ_SHIFT           = 8,
 278         RESETN_DDR0_REQ_MASK            = 1 << RESETN_DDR0_REQ_SHIFT,
 279         RESETN_DDRPHY0_REQ_SHIFT        = 9,
 280         RESETN_DDRPHY0_REQ_MASK         = 1 << RESETN_DDRPHY0_REQ_SHIFT,
 281         RESETN_DDR1_REQ_SHIFT           = 12,
 282         RESETN_DDR1_REQ_MASK            = 1 << RESETN_DDR1_REQ_SHIFT,
 283         RESETN_DDRPHY1_REQ_SHIFT        = 13,
 284         RESETN_DDRPHY1_REQ_MASK         = 1 << RESETN_DDRPHY1_REQ_SHIFT,
 285 };
 286
 287 #define VCO_MAX_KHZ     (3200 * (MHz / KHz))
 288 #define VCO_MIN_KHZ     (800 * (MHz / KHz))
 289 #define OUTPUT_MAX_KHZ  (3200 * (MHz / KHz))
 290 #define OUTPUT_MIN_KHZ  (16 * (MHz / KHz))
 291
 292 /*
 293  *  the div restructions of pll in integer mode, these are defined in
 294  *  * CRU_*PLL_CON0 or PMUCRU_*PLL_CON0
 295  */
 296 #define PLL_DIV_MIN     16
 297 #define PLL_DIV_MAX     3200
 298
 299 /*
 300  * How to calculate the PLL(from TRM V0.3 Part 1 Page 63):
 301  * Formulas also embedded within the Fractional PLL Verilog model:
 302  * If DSMPD = 1 (DSM is disabled, "integer mode")
 303  * FOUTVCO = FREF / REFDIV * FBDIV
 304  * FOUTPOSTDIV = FOUTVCO / POSTDIV1 / POSTDIV2
 305  * Where:
 306  * FOUTVCO = Fractional PLL non-divided output frequency
 307  * FOUTPOSTDIV = Fractional PLL divided output frequency
 308  *               (output of second post divider)
 309  * FREF = Fractional PLL input reference frequency, (the OSC_HZ 24MHz input)
 310  * REFDIV = Fractional PLL input reference clock divider
 311  * FBDIV = Integer value programmed into feedback divide
 312  *
 313  */
 314 static void rkclk_set_pll(u32 *pll_con, const struct pll_div *div)
 315 {
 316         /* All 8 PLLs have same VCO and output frequency range restrictions. */
 317         u32 vco_khz = OSC_HZ / 1000 * div->fbdiv / div->refdiv;
 318         u32 output_khz = vco_khz / div->postdiv1 / div->postdiv2;
 319
 320         debug("PLL at %p: fbdiv=%d, refdiv=%d, postdiv1=%d, "
 321                            "postdiv2=%d, vco=%u khz, output=%u khz\n",
 322                            pll_con, div->fbdiv, div->refdiv, div->postdiv1,
 323                            div->postdiv2, vco_khz, output_khz);
 324         assert(vco_khz >= VCO_MIN_KHZ && vco_khz <= VCO_MAX_KHZ &&
 325                output_khz >= OUTPUT_MIN_KHZ && output_khz <= OUTPUT_MAX_KHZ &&
 326                div->fbdiv >= PLL_DIV_MIN && div->fbdiv <= PLL_DIV_MAX);
 327
 328         /*
 329          * When power on or changing PLL setting,
 330          * we must force PLL into slow mode to ensure output stable clock.
 331          */
 332         rk_clrsetreg(&pll_con[3], PLL_MODE_MASK,
 333                      PLL_MODE_SLOW << PLL_MODE_SHIFT);
 334
 335         /* use integer mode */
 336         rk_clrsetreg(&pll_con[3], PLL_DSMPD_MASK,
 337                      PLL_INTEGER_MODE << PLL_DSMPD_SHIFT);
 338
 339         rk_clrsetreg(&pll_con[0], PLL_FBDIV_MASK,
 340                      div->fbdiv << PLL_FBDIV_SHIFT);
 341         rk_clrsetreg(&pll_con[1],
 342                      PLL_POSTDIV2_MASK | PLL_POSTDIV1_MASK |
 343                      PLL_REFDIV_MASK | PLL_REFDIV_SHIFT,
 344                      (div->postdiv2 << PLL_POSTDIV2_SHIFT) |
 345                      (div->postdiv1 << PLL_POSTDIV1_SHIFT) |
 346                      (div->refdiv << PLL_REFDIV_SHIFT));
 347
 348         /* waiting for pll lock */
 349         while (!(readl(&pll_con[2]) & (1 << PLL_LOCK_STATUS_SHIFT)))
 350                 udelay(1);
 351
 352         /* pll enter normal mode */
 353         rk_clrsetreg(&pll_con[3], PLL_MODE_MASK,
 354                      PLL_MODE_NORM << PLL_MODE_SHIFT);
 355 }
 356
 357 static int pll_para_config(u32 freq_hz, struct pll_div *div)
 358 {
 359         u32 ref_khz = OSC_HZ / KHz, refdiv, fbdiv = 0;
 360         u32 postdiv1, postdiv2 = 1;
 361         u32 fref_khz;
 362         u32 diff_khz, best_diff_khz;
 363         const u32 max_refdiv = 63, max_fbdiv = 3200, min_fbdiv = 16;
 364         const u32 max_postdiv1 = 7, max_postdiv2 = 7;
 365         u32 vco_khz;
 366         u32 freq_khz = freq_hz / KHz;
 367
 368         if (!freq_hz) {
 369                 printf("%s: the frequency can't be 0 Hz\n", __func__);
 370                 return -1;
 371         }
 372
 373         postdiv1 = DIV_ROUND_UP(VCO_MIN_KHZ, freq_khz);
 374         if (postdiv1 > max_postdiv1) {
 375                 postdiv2 = DIV_ROUND_UP(postdiv1, max_postdiv1);
 376                 postdiv1 = DIV_ROUND_UP(postdiv1, postdiv2);
 377         }
 378
 379         vco_khz = freq_khz * postdiv1 * postdiv2;
 380
 381         if (vco_khz < VCO_MIN_KHZ || vco_khz > VCO_MAX_KHZ ||
 382             postdiv2 > max_postdiv2) {
 383                 printf("%s: Cannot find out a supported VCO"
 384                        " for Frequency (%uHz).\n", __func__, freq_hz);
 385                 return -1;
 386         }
 387
 388         div->postdiv1 = postdiv1;
 389         div->postdiv2 = postdiv2;
 390
 391         best_diff_khz = vco_khz;
 392         for (refdiv = 1; refdiv < max_refdiv && best_diff_khz; refdiv++) {
 393                 fref_khz = ref_khz / refdiv;
 394
 395                 fbdiv = vco_khz / fref_khz;
 396                 if (fbdiv >= max_fbdiv || fbdiv <= min_fbdiv)
 397                         continue;
 398                 diff_khz = vco_khz - fbdiv * fref_khz;
 399                 if (fbdiv + 1 < max_fbdiv && diff_khz > fref_khz / 2) {
 400                         fbdiv++;
 401                         diff_khz = fref_khz - diff_khz;
 402                 }
 403
 404                 if (diff_khz >= best_diff_khz)
 405                         continue;
 406
 407                 best_diff_khz = diff_khz;
 408                 div->refdiv = refdiv;
 409                 div->fbdiv = fbdiv;
 410         }
 411
 412         if (best_diff_khz > 4 * (MHz / KHz)) {
 413                 printf("%s: Failed to match output frequency %u, "
 414                        "difference is %u Hz,exceed 4MHZ\n", __func__, freq_hz,
 415                        best_diff_khz * KHz);
 416                 return -1;
 417         }
 418         return 0;
 419 }
 420
 421 void rk3399_configure_cpu_l(struct rk3399_cru *cru,
 422                             enum apll_l_frequencies apll_l_freq)
 423 {
 424         u32 aclkm_div;
 425         u32 pclk_dbg_div;
 426         u32 atclk_div;
 427
 428         /* Setup cluster L */
 429         rkclk_set_pll(&cru->apll_l_con[0], apll_l_cfgs[apll_l_freq]);
 430
 431         aclkm_div = LPLL_HZ / ACLKM_CORE_L_HZ - 1;
 432         assert((aclkm_div + 1) * ACLKM_CORE_L_HZ == LPLL_HZ &&
 433                aclkm_div < 0x1f);
 434
 435         pclk_dbg_div = LPLL_HZ / PCLK_DBG_L_HZ - 1;
 436         assert((pclk_dbg_div + 1) * PCLK_DBG_L_HZ == LPLL_HZ &&
 437                pclk_dbg_div < 0x1f);
 438
 439         atclk_div = LPLL_HZ / ATCLK_CORE_L_HZ - 1;
 440         assert((atclk_div + 1) * ATCLK_CORE_L_HZ == LPLL_HZ &&
 441                atclk_div < 0x1f);
 442
 443         rk_clrsetreg(&cru->clksel_con[0],
 444                      ACLKM_CORE_L_DIV_CON_MASK | CLK_CORE_L_PLL_SEL_MASK |
 445                      CLK_CORE_L_DIV_MASK,
 446                      aclkm_div << ACLKM_CORE_L_DIV_CON_SHIFT |
 447                      CLK_CORE_L_PLL_SEL_ALPLL << CLK_CORE_L_PLL_SEL_SHIFT |
 448                      0 << CLK_CORE_L_DIV_SHIFT);
 449
 450         rk_clrsetreg(&cru->clksel_con[1],
 451                      PCLK_DBG_L_DIV_MASK | ATCLK_CORE_L_DIV_MASK,
 452                      pclk_dbg_div << PCLK_DBG_L_DIV_SHIFT |
 453                      atclk_div << ATCLK_CORE_L_DIV_SHIFT);
 454 }
 455
 456 void rk3399_configure_cpu_b(struct rk3399_cru *cru,
 457                             enum apll_b_frequencies apll_b_freq)
 458 {
 459         u32 aclkm_div;
 460         u32 pclk_dbg_div;
 461         u32 atclk_div;
 462
 463         /* Setup cluster B */
 464         rkclk_set_pll(&cru->apll_b_con[0], apll_b_cfgs[apll_b_freq]);
 465
 466         aclkm_div = BPLL_HZ / ACLKM_CORE_B_HZ - 1;
 467         assert((aclkm_div + 1) * ACLKM_CORE_B_HZ == BPLL_HZ &&
 468                aclkm_div < 0x1f);
 469
 470         pclk_dbg_div = BPLL_HZ / PCLK_DBG_B_HZ - 1;
 471         assert((pclk_dbg_div + 1) * PCLK_DBG_B_HZ == BPLL_HZ &&
 472                pclk_dbg_div < 0x1f);
 473
 474         atclk_div = BPLL_HZ / ATCLK_CORE_B_HZ - 1;
 475         assert((atclk_div + 1) * ATCLK_CORE_B_HZ == BPLL_HZ &&
 476                atclk_div < 0x1f);
 477
 478         rk_clrsetreg(&cru->clksel_con[2],
 479                      ACLKM_CORE_B_DIV_CON_MASK | CLK_CORE_B_PLL_SEL_MASK |
 480                      CLK_CORE_B_DIV_MASK,
 481                      aclkm_div << ACLKM_CORE_B_DIV_CON_SHIFT |
 482                      CLK_CORE_B_PLL_SEL_ABPLL << CLK_CORE_B_PLL_SEL_SHIFT |
 483                      0 << CLK_CORE_B_DIV_SHIFT);
 484
 485         rk_clrsetreg(&cru->clksel_con[3],
 486                      PCLK_DBG_B_DIV_MASK | ATCLK_CORE_B_DIV_MASK,
 487                      pclk_dbg_div << PCLK_DBG_B_DIV_SHIFT |
 488                      atclk_div << ATCLK_CORE_B_DIV_SHIFT);
 489 }
 490
 491 #define I2C_CLK_REG_MASK(bus) \
 492         (I2C_DIV_CON_MASK << CLK_I2C ##bus## _DIV_CON_SHIFT | \
 493          CLK_I2C_PLL_SEL_MASK << CLK_I2C ##bus## _PLL_SEL_SHIFT)
 494
 495 #define I2C_CLK_REG_VALUE(bus, clk_div) \
 496         ((clk_div - 1) << CLK_I2C ##bus## _DIV_CON_SHIFT | \
 497          CLK_I2C_PLL_SEL_GPLL << CLK_I2C ##bus## _PLL_SEL_SHIFT)
 498
 499 #define I2C_CLK_DIV_VALUE(con, bus) \
 500         ((con >> CLK_I2C ##bus## _DIV_CON_SHIFT) & I2C_DIV_CON_MASK)
 501
 502 #define I2C_PMUCLK_REG_MASK(bus) \
 503         (I2C_DIV_CON_MASK << CLK_I2C ##bus## _DIV_CON_SHIFT)
 504
 505 #define I2C_PMUCLK_REG_VALUE(bus, clk_div) \
 506         ((clk_div - 1) << CLK_I2C ##bus## _DIV_CON_SHIFT)
 507
 508 static ulong rk3399_i2c_get_clk(struct rk3399_cru *cru, ulong clk_id)
 509 {
 510         u32 div, con;
 511
 512         switch (clk_id) {
 513         case SCLK_I2C1:
 514                 con = readl(&cru->clksel_con[61]);
 515                 div = I2C_CLK_DIV_VALUE(con, 1);
 516                 break;
 517         case SCLK_I2C2:
 518                 con = readl(&cru->clksel_con[62]);
 519                 div = I2C_CLK_DIV_VALUE(con, 2);
 520                 break;
 521         case SCLK_I2C3:
 522                 con = readl(&cru->clksel_con[63]);
 523                 div = I2C_CLK_DIV_VALUE(con, 3);
 524                 break;
 525         case SCLK_I2C5:
 526                 con = readl(&cru->clksel_con[61]);
 527                 div = I2C_CLK_DIV_VALUE(con, 5);
 528                 break;
 529         case SCLK_I2C6:
 530                 con = readl(&cru->clksel_con[62]);
 531                 div = I2C_CLK_DIV_VALUE(con, 6);
 532                 break;
 533         case SCLK_I2C7:
 534                 con = readl(&cru->clksel_con[63]);
 535                 div = I2C_CLK_DIV_VALUE(con, 7);
 536                 break;
 537         default:
 538                 printf("do not support this i2c bus\n");
 539                 return -EINVAL;
 540         }
 541
 542         return DIV_TO_RATE(GPLL_HZ, div);
 543 }
 544
 545 static ulong rk3399_i2c_set_clk(struct rk3399_cru *cru, ulong clk_id, uint hz)
 546 {
 547         int src_clk_div;
 548
 549         /* i2c0,4,8 src clock from ppll, i2c1,2,3,5,6,7 src clock from gpll*/
 550         src_clk_div = GPLL_HZ / hz;
 551         assert(src_clk_div - 1 < 127);
 552
 553         switch (clk_id) {
 554         case SCLK_I2C1:
 555                 rk_clrsetreg(&cru->clksel_con[61], I2C_CLK_REG_MASK(1),
 556                              I2C_CLK_REG_VALUE(1, src_clk_div));
 557                 break;
 558         case SCLK_I2C2:
 559                 rk_clrsetreg(&cru->clksel_con[62], I2C_CLK_REG_MASK(2),
 560                              I2C_CLK_REG_VALUE(2, src_clk_div));
 561                 break;
 562         case SCLK_I2C3:
 563                 rk_clrsetreg(&cru->clksel_con[63], I2C_CLK_REG_MASK(3),
 564                              I2C_CLK_REG_VALUE(3, src_clk_div));
 565                 break;
 566         case SCLK_I2C5:
 567                 rk_clrsetreg(&cru->clksel_con[61], I2C_CLK_REG_MASK(5),
 568                              I2C_CLK_REG_VALUE(5, src_clk_div));
 569                 break;
 570         case SCLK_I2C6:
 571                 rk_clrsetreg(&cru->clksel_con[62], I2C_CLK_REG_MASK(6),
 572                              I2C_CLK_REG_VALUE(6, src_clk_div));
 573                 break;
 574         case SCLK_I2C7:
 575                 rk_clrsetreg(&cru->clksel_con[63], I2C_CLK_REG_MASK(7),
 576                              I2C_CLK_REG_VALUE(7, src_clk_div));
 577                 break;
 578         default:
 579                 printf("do not support this i2c bus\n");
 580                 return -EINVAL;
 581         }
 582
 583         return rk3399_i2c_get_clk(cru, clk_id);
 584 }
 585
 586 /*
 587  * RK3399 SPI clocks have a common divider-width (7 bits) and a single bit
 588  * to select either CPLL or GPLL as the clock-parent. The location within
 589  * the enclosing CLKSEL_CON (i.e. div_shift and sel_shift) are variable.
 590  */
 591
 592 struct spi_clkreg {
 593         u8 reg;  /* CLKSEL_CON[reg] register in CRU */
 594         u8 div_shift;
 595         u8 sel_shift;
 596 };
 597
 598 /*
 599  * The entries are numbered relative to their offset from SCLK_SPI0.
 600  *
 601  * Note that SCLK_SPI3 (which is configured via PMUCRU and requires different
 602  * logic is not supported).
 603  */
 604 static const struct spi_clkreg spi_clkregs[] = {
 605         [0] = { .reg = 59,
 606                 .div_shift = CLK_SPI0_PLL_DIV_CON_SHIFT,
 607                 .sel_shift = CLK_SPI0_PLL_SEL_SHIFT, },
 608         [1] = { .reg = 59,
 609                 .div_shift = CLK_SPI1_PLL_DIV_CON_SHIFT,
 610                 .sel_shift = CLK_SPI1_PLL_SEL_SHIFT, },
 611         [2] = { .reg = 60,
 612                 .div_shift = CLK_SPI2_PLL_DIV_CON_SHIFT,
 613                 .sel_shift = CLK_SPI2_PLL_SEL_SHIFT, },
 614         [3] = { .reg = 60,
 615                 .div_shift = CLK_SPI4_PLL_DIV_CON_SHIFT,
 616                 .sel_shift = CLK_SPI4_PLL_SEL_SHIFT, },
 617         [4] = { .reg = 58,
 618                 .div_shift = CLK_SPI5_PLL_DIV_CON_SHIFT,
 619                 .sel_shift = CLK_SPI5_PLL_SEL_SHIFT, },
 620 };
 621
 622 static ulong rk3399_spi_get_clk(struct rk3399_cru *cru, ulong clk_id)
 623 {
 624         const struct spi_clkreg *spiclk = NULL;
 625         u32 div, val;
 626
 627         switch (clk_id) {
 628         case SCLK_SPI0 ... SCLK_SPI5:
 629                 spiclk = &spi_clkregs[clk_id - SCLK_SPI0];
 630                 break;
 631
 632         default:
 633                 pr_err("%s: SPI clk-id %ld not supported\n", __func__, clk_id);
 634                 return -EINVAL;
 635         }
 636
 637         val = readl(&cru->clksel_con[spiclk->reg]);
 638         div = bitfield_extract(val, spiclk->div_shift,
 639                                CLK_SPI_PLL_DIV_CON_WIDTH);
 640
 641         return DIV_TO_RATE(GPLL_HZ, div);
 642 }
 643
 644 static ulong rk3399_spi_set_clk(struct rk3399_cru *cru, ulong clk_id, uint hz)
 645 {
 646         const struct spi_clkreg *spiclk = NULL;
 647         int src_clk_div;
 648
 649         src_clk_div = DIV_ROUND_UP(GPLL_HZ, hz) - 1;
 650         assert(src_clk_div < 128);
 651
 652         switch (clk_id) {
 653         case SCLK_SPI1 ... SCLK_SPI5:
 654                 spiclk = &spi_clkregs[clk_id - SCLK_SPI0];
 655                 break;
 656
 657         default:
 658                 pr_err("%s: SPI clk-id %ld not supported\n", __func__, clk_id);
 659                 return -EINVAL;
 660         }
 661
 662         rk_clrsetreg(&cru->clksel_con[spiclk->reg],
 663                      ((CLK_SPI_PLL_DIV_CON_MASK << spiclk->div_shift) |
 664                        (CLK_SPI_PLL_SEL_GPLL << spiclk->sel_shift)),
 665                      ((src_clk_div << spiclk->div_shift) |
 666                       (CLK_SPI_PLL_SEL_GPLL << spiclk->sel_shift)));
 667
 668         return rk3399_spi_get_clk(cru, clk_id);
 669 }
 670
 671 static ulong rk3399_vop_set_clk(struct rk3399_cru *cru, ulong clk_id, u32 hz)
 672 {
 673         struct pll_div vpll_config = {0};
 674         int aclk_vop = 198 * MHz;
 675         void *aclkreg_addr, *dclkreg_addr;
 676         u32 div;
 677
 678         switch (clk_id) {
 679         case DCLK_VOP0:
 680                 aclkreg_addr = &cru->clksel_con[47];
 681                 dclkreg_addr = &cru->clksel_con[49];
 682                 break;
 683         case DCLK_VOP1:
 684                 aclkreg_addr = &cru->clksel_con[48];
 685                 dclkreg_addr = &cru->clksel_con[50];
 686                 break;
 687         default:
 688                 return -EINVAL;
 689         }
 690         /* vop aclk source clk: cpll */
 691         div = CPLL_HZ / aclk_vop;
 692         assert(div - 1 < 32);
 693
 694         rk_clrsetreg(aclkreg_addr,
 695                      ACLK_VOP_PLL_SEL_MASK | ACLK_VOP_DIV_CON_MASK,
 696                      ACLK_VOP_PLL_SEL_CPLL << ACLK_VOP_PLL_SEL_SHIFT |
 697                      (div - 1) << ACLK_VOP_DIV_CON_SHIFT);
 698
 699         /* vop dclk source from vpll, and equals to vpll(means div == 1) */
 700         if (pll_para_config(hz, &vpll_config))
 701                 return -1;
 702
 703         rkclk_set_pll(&cru->vpll_con[0], &vpll_config);
 704
 705         rk_clrsetreg(dclkreg_addr,
 706                      DCLK_VOP_DCLK_SEL_MASK | DCLK_VOP_PLL_SEL_MASK |
 707                      DCLK_VOP_DIV_CON_MASK,
 708                      DCLK_VOP_DCLK_SEL_DIVOUT << DCLK_VOP_DCLK_SEL_SHIFT |
 709                      DCLK_VOP_PLL_SEL_VPLL << DCLK_VOP_PLL_SEL_SHIFT |
 710                      (1 - 1) << DCLK_VOP_DIV_CON_SHIFT);
 711
 712         return hz;
 713 }
 714
 715 static ulong rk3399_mmc_get_clk(struct rk3399_cru *cru, uint clk_id)
 716 {
 717         u32 div, con;
 718
 719         switch (clk_id) {
 720         case HCLK_SDMMC:
 721         case SCLK_SDMMC:
 722                 con = readl(&cru->clksel_con[16]);
 723                 /* dwmmc controller have internal div 2 */
 724                 div = 2;
 725                 break;
 726         case SCLK_EMMC:
 727                 con = readl(&cru->clksel_con[21]);
 728                 div = 1;
 729                 break;
 730         default:
 731                 return -EINVAL;
 732         }
 733
 734         div *= (con & CLK_EMMC_DIV_CON_MASK) >> CLK_EMMC_DIV_CON_SHIFT;
 735         if ((con & CLK_EMMC_PLL_MASK) >> CLK_EMMC_PLL_SHIFT
 736                         == CLK_EMMC_PLL_SEL_24M)
 737                 return DIV_TO_RATE(OSC_HZ, div);
 738         else
 739                 return DIV_TO_RATE(GPLL_HZ, div);
 740 }
 741
 742 static ulong rk3399_mmc_set_clk(struct rk3399_cru *cru,
 743                                 ulong clk_id, ulong set_rate)
 744 {
 745         int src_clk_div;
 746         int aclk_emmc = 198 * MHz;
 747
 748         switch (clk_id) {
 749         case HCLK_SDMMC:
 750         case SCLK_SDMMC:
 751                 /* Select clk_sdmmc source from GPLL by default */
 752                 /* mmc clock defaulg div 2 internal, provide double in cru */
 753                 src_clk_div = DIV_ROUND_UP(GPLL_HZ / 2, set_rate);
 754
 755                 if (src_clk_div > 128) {
 756                         /* use 24MHz source for 400KHz clock */
 757                         src_clk_div = DIV_ROUND_UP(OSC_HZ / 2, set_rate);
 758                         assert(src_clk_div - 1 < 128);
 759                         rk_clrsetreg(&cru->clksel_con[16],
 760                                      CLK_EMMC_PLL_MASK | CLK_EMMC_DIV_CON_MASK,
 761                                      CLK_EMMC_PLL_SEL_24M << CLK_EMMC_PLL_SHIFT |
 762                                      (src_clk_div - 1) << CLK_EMMC_DIV_CON_SHIFT);
 763                 } else {
 764                         rk_clrsetreg(&cru->clksel_con[16],
 765                                      CLK_EMMC_PLL_MASK | CLK_EMMC_DIV_CON_MASK,
 766                                      CLK_EMMC_PLL_SEL_GPLL << CLK_EMMC_PLL_SHIFT |
 767                                      (src_clk_div - 1) << CLK_EMMC_DIV_CON_SHIFT);
 768                 }
 769                 break;
 770         case SCLK_EMMC:
 771                 /* Select aclk_emmc source from GPLL */
 772                 src_clk_div = DIV_ROUND_UP(GPLL_HZ, aclk_emmc);
 773                 assert(src_clk_div - 1 < 32);
 774
 775                 rk_clrsetreg(&cru->clksel_con[21],
 776                              ACLK_EMMC_PLL_SEL_MASK | ACLK_EMMC_DIV_CON_MASK,
 777                              ACLK_EMMC_PLL_SEL_GPLL << ACLK_EMMC_PLL_SEL_SHIFT |
 778                              (src_clk_div - 1) << ACLK_EMMC_DIV_CON_SHIFT);
 779
 780                 /* Select clk_emmc source from GPLL too */
 781                 src_clk_div = DIV_ROUND_UP(GPLL_HZ, set_rate);
 782                 assert(src_clk_div - 1 < 128);
 783
 784                 rk_clrsetreg(&cru->clksel_con[22],
 785                              CLK_EMMC_PLL_MASK | CLK_EMMC_DIV_CON_MASK,
 786                              CLK_EMMC_PLL_SEL_GPLL << CLK_EMMC_PLL_SHIFT |
 787                              (src_clk_div - 1) << CLK_EMMC_DIV_CON_SHIFT);
 788                 break;
 789         default:
 790                 return -EINVAL;
 791         }
 792         return rk3399_mmc_get_clk(cru, clk_id);
 793 }
 794
 795 static ulong rk3399_gmac_set_clk(struct rk3399_cru *cru, ulong rate)
 796 {
 797         ulong ret;
 798
 799         /*
 800          * The RGMII CLK can be derived either from an external "clkin"
 801          * or can be generated from internally by a divider from SCLK_MAC.
 802          */
 803         if (readl(&cru->clksel_con[19]) & BIT(4)) {
 804                 /* An external clock will always generate the right rate... */
 805                 ret = rate;
 806         } else {
 807                 /*
 808                  * No platform uses an internal clock to date.
 809                  * Implement this once it becomes necessary and print an error
 810                  * if someone tries to use it (while it remains unimplemented).
 811                  */
 812                 pr_err("%s: internal clock is UNIMPLEMENTED\n", __func__);
 813                 ret = 0;
 814         }
 815
 816         return ret;
 817 }
 818
 819 #define PMUSGRF_DDR_RGN_CON16 0xff330040
 820 static ulong rk3399_ddr_set_clk(struct rk3399_cru *cru,
 821                                 ulong set_rate)
 822 {
 823         struct pll_div dpll_cfg;
 824
 825         /*  IC ECO bug, need to set this register */
 826         writel(0xc000c000, PMUSGRF_DDR_RGN_CON16);
 827
 828         /*  clk_ddrc == DPLL = 24MHz / refdiv * fbdiv / postdiv1 / postdiv2 */
 829         switch (set_rate) {
 830         case 200 * MHz:
 831                 dpll_cfg = (struct pll_div)
 832                 {.refdiv = 1, .fbdiv = 50, .postdiv1 = 6, .postdiv2 = 1};
 833                 break;
 834         case 300 * MHz:
 835                 dpll_cfg = (struct pll_div)
 836                 {.refdiv = 2, .fbdiv = 100, .postdiv1 = 4, .postdiv2 = 1};
 837                 break;
 838         case 666 * MHz:
 839                 dpll_cfg = (struct pll_div)
 840                 {.refdiv = 2, .fbdiv = 111, .postdiv1 = 2, .postdiv2 = 1};
 841                 break;
 842         case 800 * MHz:
 843                 dpll_cfg = (struct pll_div)
 844                 {.refdiv = 1, .fbdiv = 100, .postdiv1 = 3, .postdiv2 = 1};
 845                 break;
 846         case 933 * MHz:
 847                 dpll_cfg = (struct pll_div)
 848                 {.refdiv = 1, .fbdiv = 116, .postdiv1 = 3, .postdiv2 = 1};
 849                 break;
 850         default:
 851                 pr_err("Unsupported SDRAM frequency!,%ld\n", set_rate);
 852         }
 853         rkclk_set_pll(&cru->dpll_con[0], &dpll_cfg);
 854
 855         return set_rate;
 856 }
 857
 858 static ulong rk3399_saradc_get_clk(struct rk3399_cru *cru)
 859 {
 860         u32 div, val;
 861
 862         val = readl(&cru->clksel_con[26]);
 863         div = bitfield_extract(val, CLK_SARADC_DIV_CON_SHIFT,
 864                                CLK_SARADC_DIV_CON_WIDTH);
 865
 866         return DIV_TO_RATE(OSC_HZ, div);
 867 }
 868
 869 static ulong rk3399_saradc_set_clk(struct rk3399_cru *cru, uint hz)
 870 {
 871         int src_clk_div;
 872
 873         src_clk_div = DIV_ROUND_UP(OSC_HZ, hz) - 1;
 874         assert(src_clk_div < 128);
 875
 876         rk_clrsetreg(&cru->clksel_con[26],
 877                      CLK_SARADC_DIV_CON_MASK,
 878                      src_clk_div << CLK_SARADC_DIV_CON_SHIFT);
 879
 880         return rk3399_saradc_get_clk(cru);
 881 }
 882
 883 static ulong rk3399_clk_get_rate(struct clk *clk)
 884 {
 885         struct rk3399_clk_priv *priv = dev_get_priv(clk->dev);
 886         ulong rate = 0;
 887
 888         switch (clk->id) {
 889         case 0 ... 63:
 890                 return 0;
 891         case HCLK_SDMMC:
 892         case SCLK_SDMMC:
 893         case SCLK_EMMC:
 894                 rate = rk3399_mmc_get_clk(priv->cru, clk->id);
 895                 break;
 896         case SCLK_I2C1:
 897         case SCLK_I2C2:
 898         case SCLK_I2C3:
 899         case SCLK_I2C5:
 900         case SCLK_I2C6:
 901         case SCLK_I2C7:
 902                 rate = rk3399_i2c_get_clk(priv->cru, clk->id);
 903                 break;
 904         case SCLK_SPI0...SCLK_SPI5:
 905                 rate = rk3399_spi_get_clk(priv->cru, clk->id);
 906                 break;
 907         case SCLK_UART0:
 908         case SCLK_UART1:
 909         case SCLK_UART2:
 910         case SCLK_UART3:
 911                 return 24000000;
 912         case PCLK_HDMI_CTRL:
 913                 break;
 914         case DCLK_VOP0:
 915         case DCLK_VOP1:
 916                 break;
 917         case PCLK_EFUSE1024NS:
 918                 break;
 919         case SCLK_SARADC:
 920                 rate = rk3399_saradc_get_clk(priv->cru);
 921                 break;
 922         case ACLK_VIO:
 923         case ACLK_HDCP:
 924         case ACLK_GIC_PRE:
 925         case PCLK_DDR:
 926                 break;
 927         default:
 928                 log_debug("Unknown clock %lu\n", clk->id);
 929                 return -ENOENT;
 930         }
 931
 932         return rate;
 933 }
 934
 935 static ulong rk3399_clk_set_rate(struct clk *clk, ulong rate)
 936 {
 937         struct rk3399_clk_priv *priv = dev_get_priv(clk->dev);
 938         ulong ret = 0;
 939
 940         switch (clk->id) {
 941         case 0 ... 63:
 942                 return 0;
 943
 944         case ACLK_PERIHP:
 945         case HCLK_PERIHP:
 946         case PCLK_PERIHP:
 947                 return 0;
 948
 949         case ACLK_PERILP0:
 950         case HCLK_PERILP0:
 951         case PCLK_PERILP0:
 952                 return 0;
 953
 954         case ACLK_CCI:
 955                 return 0;
 956
 957         case HCLK_PERILP1:
 958         case PCLK_PERILP1:
 959                 return 0;
 960
 961         case HCLK_SDMMC:
 962         case SCLK_SDMMC:
 963         case SCLK_EMMC:
 964                 ret = rk3399_mmc_set_clk(priv->cru, clk->id, rate);
 965                 break;
 966         case SCLK_MAC:
 967                 ret = rk3399_gmac_set_clk(priv->cru, rate);
 968                 break;
 969         case SCLK_I2C1:
 970         case SCLK_I2C2:
 971         case SCLK_I2C3:
 972         case SCLK_I2C5:
 973         case SCLK_I2C6:
 974         case SCLK_I2C7:
 975                 ret = rk3399_i2c_set_clk(priv->cru, clk->id, rate);
 976                 break;
 977         case SCLK_SPI0...SCLK_SPI5:
 978                 ret = rk3399_spi_set_clk(priv->cru, clk->id, rate);
 979                 break;
 980         case PCLK_HDMI_CTRL:
 981         case PCLK_VIO_GRF:
 982                 /* the PCLK gates for video are enabled by default */
 983                 break;
 984         case DCLK_VOP0:
 985         case DCLK_VOP1:
 986                 ret = rk3399_vop_set_clk(priv->cru, clk->id, rate);
 987                 break;
 988         case SCLK_DDRCLK:
 989                 ret = rk3399_ddr_set_clk(priv->cru, rate);
 990                 break;
 991         case PCLK_EFUSE1024NS:
 992                 break;
 993         case SCLK_SARADC:
 994                 ret = rk3399_saradc_set_clk(priv->cru, rate);
 995                 break;
 996         case ACLK_VIO:
 997         case ACLK_HDCP:
 998         case ACLK_GIC_PRE:
 999         case PCLK_DDR:
1000                 return 0;
1001         default:
1002                 log_debug("Unknown clock %lu\n", clk->id);
1003                 return -ENOENT;
1004         }
1005
1006         return ret;
1007 }
1008
1009 static int __maybe_unused rk3399_gmac_set_parent(struct clk *clk,
1010                                                  struct clk *parent)
1011 {
1012         struct rk3399_clk_priv *priv = dev_get_priv(clk->dev);
1013         const char *clock_output_name;
1014         int ret;
1015
1016         /*
1017          * If the requested parent is in the same clock-controller and
1018          * the id is SCLK_MAC ("clk_gmac"), switch to the internal clock.
1019          */
1020         if (parent->dev == clk->dev && parent->id == SCLK_MAC) {
1021                 debug("%s: switching RGMII to SCLK_MAC\n", __func__);
1022                 rk_clrreg(&priv->cru->clksel_con[19], BIT(4));
1023                 return 0;
1024         }
1025
1026         /*
1027          * Otherwise, we need to check the clock-output-names of the
1028          * requested parent to see if the requested id is "clkin_gmac".
1029          */
1030         ret = dev_read_string_index(parent->dev, "clock-output-names",
1031                                     parent->id, &clock_output_name);
1032         if (ret < 0)
1033                 return -ENODATA;
1034
1035         /* If this is "clkin_gmac", switch to the external clock input */
1036         if (!strcmp(clock_output_name, "clkin_gmac")) {
1037                 debug("%s: switching RGMII to CLKIN\n", __func__);
1038                 rk_setreg(&priv->cru->clksel_con[19], BIT(4));
1039                 return 0;
1040         }
1041
1042         return -EINVAL;
1043 }
1044
1045 static int __maybe_unused rk3399_clk_set_parent(struct clk *clk,
1046                                                 struct clk *parent)
1047 {
1048         switch (clk->id) {
1049         case SCLK_RMII_SRC:
1050                 return rk3399_gmac_set_parent(clk, parent);
1051         }
1052
1053         debug("%s: unsupported clk %ld\n", __func__, clk->id);
1054         return -ENOENT;
1055 }
1056
1057 static int rk3399_clk_enable(struct clk *clk)
1058 {
1059         switch (clk->id) {
1060         case HCLK_HOST0:
1061         case HCLK_HOST0_ARB:
1062         case HCLK_HOST1:
1063         case HCLK_HOST1_ARB:
1064                 return 0;
1065
1066         case SCLK_MAC:
1067         case SCLK_MAC_RX:
1068         case SCLK_MAC_TX:
1069         case SCLK_MACREF:
1070         case SCLK_MACREF_OUT:
1071         case ACLK_GMAC:
1072         case PCLK_GMAC:
1073                 /* Required to successfully probe the Designware GMAC driver */
1074                 return 0;
1075
1076         case SCLK_USB3OTG0_REF:
1077         case SCLK_USB3OTG1_REF:
1078         case SCLK_USB3OTG0_SUSPEND:
1079         case SCLK_USB3OTG1_SUSPEND:
1080         case ACLK_USB3OTG0:
1081         case ACLK_USB3OTG1:
1082         case ACLK_USB3_RKSOC_AXI_PERF:
1083         case ACLK_USB3:
1084         case ACLK_USB3_GRF:
1085                 /* Required to successfully probe the Designware USB3 driver */
1086                 return 0;
1087         }
1088
1089         debug("%s: unsupported clk %ld\n", __func__, clk->id);
1090         return -ENOENT;
1091 }
1092
1093 static struct clk_ops rk3399_clk_ops = {
1094         .get_rate = rk3399_clk_get_rate,
1095         .set_rate = rk3399_clk_set_rate,
1096 #if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)
1097         .set_parent = rk3399_clk_set_parent,
1098 #endif
1099         .enable = rk3399_clk_enable,
1100 };
1101
1102 #ifdef CONFIG_SPL_BUILD
1103 static void rkclk_init(struct rk3399_cru *cru)
1104 {
1105         u32 aclk_div;
1106         u32 hclk_div;
1107         u32 pclk_div;
1108
1109         rk3399_configure_cpu_l(cru, APLL_L_600_MHZ);
1110         rk3399_configure_cpu_b(cru, APLL_B_600_MHZ);
1111         /*
1112          * some cru registers changed by bootrom, we'd better reset them to
1113          * reset/default values described in TRM to avoid confusion in kernel.
1114          * Please consider these three lines as a fix of bootrom bug.
1115          */
1116         rk_clrsetreg(&cru->clksel_con[12], 0xffff, 0x4101);
1117         rk_clrsetreg(&cru->clksel_con[19], 0xffff, 0x033f);
1118         rk_clrsetreg(&cru->clksel_con[56], 0x0003, 0x0003);
1119
1120         /* configure gpll cpll */
1121         rkclk_set_pll(&cru->gpll_con[0], &gpll_init_cfg);
1122         rkclk_set_pll(&cru->cpll_con[0], &cpll_init_cfg);
1123
1124         /* configure perihp aclk, hclk, pclk */
1125         aclk_div = GPLL_HZ / PERIHP_ACLK_HZ - 1;
1126         assert((aclk_div + 1) * PERIHP_ACLK_HZ == GPLL_HZ && aclk_div < 0x1f);
1127
1128         hclk_div = PERIHP_ACLK_HZ / PERIHP_HCLK_HZ - 1;
1129         assert((hclk_div + 1) * PERIHP_HCLK_HZ ==
1130                PERIHP_ACLK_HZ && (hclk_div < 0x4));
1131
1132         pclk_div = PERIHP_ACLK_HZ / PERIHP_PCLK_HZ - 1;
1133         assert((pclk_div + 1) * PERIHP_PCLK_HZ ==
1134                PERIHP_ACLK_HZ && (pclk_div < 0x7));
1135
1136         rk_clrsetreg(&cru->clksel_con[14],
1137                      PCLK_PERIHP_DIV_CON_MASK | HCLK_PERIHP_DIV_CON_MASK |
1138                      ACLK_PERIHP_PLL_SEL_MASK | ACLK_PERIHP_DIV_CON_MASK,
1139                      pclk_div << PCLK_PERIHP_DIV_CON_SHIFT |
1140                      hclk_div << HCLK_PERIHP_DIV_CON_SHIFT |
1141                      ACLK_PERIHP_PLL_SEL_GPLL << ACLK_PERIHP_PLL_SEL_SHIFT |
1142                      aclk_div << ACLK_PERIHP_DIV_CON_SHIFT);
1143
1144         /* configure perilp0 aclk, hclk, pclk */
1145         aclk_div = GPLL_HZ / PERILP0_ACLK_HZ - 1;
1146         assert((aclk_div + 1) * PERILP0_ACLK_HZ == GPLL_HZ && aclk_div < 0x1f);
1147
1148         hclk_div = PERILP0_ACLK_HZ / PERILP0_HCLK_HZ - 1;
1149         assert((hclk_div + 1) * PERILP0_HCLK_HZ ==
1150                PERILP0_ACLK_HZ && (hclk_div < 0x4));
1151
1152         pclk_div = PERILP0_ACLK_HZ / PERILP0_PCLK_HZ - 1;
1153         assert((pclk_div + 1) * PERILP0_PCLK_HZ ==
1154                PERILP0_ACLK_HZ && (pclk_div < 0x7));
1155
1156         rk_clrsetreg(&cru->clksel_con[23],
1157                      PCLK_PERILP0_DIV_CON_MASK | HCLK_PERILP0_DIV_CON_MASK |
1158                      ACLK_PERILP0_PLL_SEL_MASK | ACLK_PERILP0_DIV_CON_MASK,
1159                      pclk_div << PCLK_PERILP0_DIV_CON_SHIFT |
1160                      hclk_div << HCLK_PERILP0_DIV_CON_SHIFT |
1161                      ACLK_PERILP0_PLL_SEL_GPLL << ACLK_PERILP0_PLL_SEL_SHIFT |
1162                      aclk_div << ACLK_PERILP0_DIV_CON_SHIFT);
1163
1164         /* perilp1 hclk select gpll as source */
1165         hclk_div = GPLL_HZ / PERILP1_HCLK_HZ - 1;
1166         assert((hclk_div + 1) * PERILP1_HCLK_HZ ==
1167                GPLL_HZ && (hclk_div < 0x1f));
1168
1169         pclk_div = PERILP1_HCLK_HZ / PERILP1_HCLK_HZ - 1;
1170         assert((pclk_div + 1) * PERILP1_HCLK_HZ ==
1171                PERILP1_HCLK_HZ && (hclk_div < 0x7));
1172
1173         rk_clrsetreg(&cru->clksel_con[25],
1174                      PCLK_PERILP1_DIV_CON_MASK | HCLK_PERILP1_DIV_CON_MASK |
1175                      HCLK_PERILP1_PLL_SEL_MASK,
1176                      pclk_div << PCLK_PERILP1_DIV_CON_SHIFT |
1177                      hclk_div << HCLK_PERILP1_DIV_CON_SHIFT |
1178                      HCLK_PERILP1_PLL_SEL_GPLL << HCLK_PERILP1_PLL_SEL_SHIFT);
1179 }
1180 #endif
1181
1182 static int rk3399_clk_probe(struct udevice *dev)
1183 {
1184 #ifdef CONFIG_SPL_BUILD
1185         struct rk3399_clk_priv *priv = dev_get_priv(dev);
1186
1187 #if CONFIG_IS_ENABLED(OF_PLATDATA)
1188         struct rk3399_clk_plat *plat = dev_get_platdata(dev);
1189
1190         priv->cru = map_sysmem(plat->dtd.reg[0], plat->dtd.reg[1]);
1191 #endif
1192         rkclk_init(priv->cru);
1193 #endif
1194         return 0;
1195 }
1196
1197 static int rk3399_clk_ofdata_to_platdata(struct udevice *dev)
1198 {
1199 #if !CONFIG_IS_ENABLED(OF_PLATDATA)
1200         struct rk3399_clk_priv *priv = dev_get_priv(dev);
1201
1202         priv->cru = dev_read_addr_ptr(dev);
1203 #endif
1204         return 0;
1205 }
1206
1207 static int rk3399_clk_bind(struct udevice *dev)
1208 {
1209         int ret;
1210         struct udevice *sys_child;
1211         struct sysreset_reg *priv;
1212
1213         /* The reset driver does not have a device node, so bind it here */
1214         ret = device_bind_driver(dev, "rockchip_sysreset", "sysreset",
1215                                  &sys_child);
1216         if (ret) {
1217                 debug("Warning: No sysreset driver: ret=%d\n", ret);
1218         } else {
1219                 priv = malloc(sizeof(struct sysreset_reg));
1220                 priv->glb_srst_fst_value = offsetof(struct rk3399_cru,
1221                                                     glb_srst_fst_value);
1222                 priv->glb_srst_snd_value = offsetof(struct rk3399_cru,
1223                                                     glb_srst_snd_value);
1224                 sys_child->priv = priv;
1225         }
1226
1227 #if CONFIG_IS_ENABLED(CONFIG_RESET_ROCKCHIP)
1228         ret = offsetof(struct rk3399_cru, softrst_con[0]);
1229         ret = rockchip_reset_bind(dev, ret, 21);
1230         if (ret)
1231                 debug("Warning: software reset driver bind faile\n");
1232 #endif
1233
1234         return 0;
1235 }
1236
1237 static const struct udevice_id rk3399_clk_ids[] = {
1238         { .compatible = "rockchip,rk3399-cru" },
1239         { }
1240 };
1241
1242 U_BOOT_DRIVER(clk_rk3399) = {
1243         .name           = "rockchip_rk3399_cru",
1244         .id             = UCLASS_CLK,
1245         .of_match       = rk3399_clk_ids,
1246         .priv_auto_alloc_size = sizeof(struct rk3399_clk_priv),
1247         .ofdata_to_platdata = rk3399_clk_ofdata_to_platdata,
1248         .ops            = &rk3399_clk_ops,
1249         .bind           = rk3399_clk_bind,
1250         .probe          = rk3399_clk_probe,
1251 #if CONFIG_IS_ENABLED(OF_PLATDATA)
1252         .platdata_auto_alloc_size = sizeof(struct rk3399_clk_plat),
1253 #endif
1254 };
1255
1256 static ulong rk3399_i2c_get_pmuclk(struct rk3399_pmucru *pmucru, ulong clk_id)
1257 {
1258         u32 div, con;
1259
1260         switch (clk_id) {
1261         case SCLK_I2C0_PMU:
1262                 con = readl(&pmucru->pmucru_clksel[2]);
1263                 div = I2C_CLK_DIV_VALUE(con, 0);
1264                 break;
1265         case SCLK_I2C4_PMU:
1266                 con = readl(&pmucru->pmucru_clksel[3]);
1267                 div = I2C_CLK_DIV_VALUE(con, 4);
1268                 break;
1269         case SCLK_I2C8_PMU:
1270                 con = readl(&pmucru->pmucru_clksel[2]);
1271                 div = I2C_CLK_DIV_VALUE(con, 8);
1272                 break;
1273         default:
1274                 printf("do not support this i2c bus\n");
1275                 return -EINVAL;
1276         }
1277
1278         return DIV_TO_RATE(PPLL_HZ, div);
1279 }
1280
1281 static ulong rk3399_i2c_set_pmuclk(struct rk3399_pmucru *pmucru, ulong clk_id,
1282                                    uint hz)
1283 {
1284         int src_clk_div;
1285
1286         src_clk_div = PPLL_HZ / hz;
1287         assert(src_clk_div - 1 < 127);
1288
1289         switch (clk_id) {
1290         case SCLK_I2C0_PMU:
1291                 rk_clrsetreg(&pmucru->pmucru_clksel[2], I2C_PMUCLK_REG_MASK(0),
1292                              I2C_PMUCLK_REG_VALUE(0, src_clk_div));
1293                 break;
1294         case SCLK_I2C4_PMU:
1295                 rk_clrsetreg(&pmucru->pmucru_clksel[3], I2C_PMUCLK_REG_MASK(4),
1296                              I2C_PMUCLK_REG_VALUE(4, src_clk_div));
1297                 break;
1298         case SCLK_I2C8_PMU:
1299                 rk_clrsetreg(&pmucru->pmucru_clksel[2], I2C_PMUCLK_REG_MASK(8),
1300                              I2C_PMUCLK_REG_VALUE(8, src_clk_div));
1301                 break;
1302         default:
1303                 printf("do not support this i2c bus\n");
1304                 return -EINVAL;
1305         }
1306
1307         return DIV_TO_RATE(PPLL_HZ, src_clk_div);
1308 }
1309
1310 static ulong rk3399_pwm_get_clk(struct rk3399_pmucru *pmucru)
1311 {
1312         u32 div, con;
1313
1314         /* PWM closk rate is same as pclk_pmu */
1315         con = readl(&pmucru->pmucru_clksel[0]);
1316         div = con & PMU_PCLK_DIV_CON_MASK;
1317
1318         return DIV_TO_RATE(PPLL_HZ, div);
1319 }
1320
1321 static ulong rk3399_pmuclk_get_rate(struct clk *clk)
1322 {
1323         struct rk3399_pmuclk_priv *priv = dev_get_priv(clk->dev);
1324         ulong rate = 0;
1325
1326         switch (clk->id) {
1327         case PLL_PPLL:
1328                 return PPLL_HZ;
1329         case PCLK_RKPWM_PMU:
1330                 rate = rk3399_pwm_get_clk(priv->pmucru);
1331                 break;
1332         case SCLK_I2C0_PMU:
1333         case SCLK_I2C4_PMU:
1334         case SCLK_I2C8_PMU:
1335                 rate = rk3399_i2c_get_pmuclk(priv->pmucru, clk->id);
1336                 break;
1337         default:
1338                 return -ENOENT;
1339         }
1340
1341         return rate;
1342 }
1343
1344 static ulong rk3399_pmuclk_set_rate(struct clk *clk, ulong rate)
1345 {
1346         struct rk3399_pmuclk_priv *priv = dev_get_priv(clk->dev);
1347         ulong ret = 0;
1348
1349         switch (clk->id) {
1350         case PLL_PPLL:
1351                 /*
1352                  * This has already been set up and we don't want/need
1353                  * to change it here.  Accept the request though, as the
1354                  * device-tree has this in an 'assigned-clocks' list.
1355                  */
1356                 return PPLL_HZ;
1357         case SCLK_I2C0_PMU:
1358         case SCLK_I2C4_PMU:
1359         case SCLK_I2C8_PMU:
1360                 ret = rk3399_i2c_set_pmuclk(priv->pmucru, clk->id, rate);
1361                 break;
1362         default:
1363                 return -ENOENT;
1364         }
1365
1366         return ret;
1367 }
1368
1369 static struct clk_ops rk3399_pmuclk_ops = {
1370         .get_rate = rk3399_pmuclk_get_rate,
1371         .set_rate = rk3399_pmuclk_set_rate,
1372 };
1373
1374 #ifndef CONFIG_SPL_BUILD
1375 static void pmuclk_init(struct rk3399_pmucru *pmucru)
1376 {
1377         u32 pclk_div;
1378
1379         /*  configure pmu pll(ppll) */
1380         rkclk_set_pll(&pmucru->ppll_con[0], &ppll_init_cfg);
1381
1382         /*  configure pmu pclk */
1383         pclk_div = PPLL_HZ / PMU_PCLK_HZ - 1;
1384         rk_clrsetreg(&pmucru->pmucru_clksel[0],
1385                      PMU_PCLK_DIV_CON_MASK,
1386                      pclk_div << PMU_PCLK_DIV_CON_SHIFT);
1387 }
1388 #endif
1389
1390 static int rk3399_pmuclk_probe(struct udevice *dev)
1391 {
1392 #if CONFIG_IS_ENABLED(OF_PLATDATA) || !defined(CONFIG_SPL_BUILD)
1393         struct rk3399_pmuclk_priv *priv = dev_get_priv(dev);
1394 #endif
1395
1396 #if CONFIG_IS_ENABLED(OF_PLATDATA)
1397         struct rk3399_pmuclk_plat *plat = dev_get_platdata(dev);
1398
1399         priv->pmucru = map_sysmem(plat->dtd.reg[0], plat->dtd.reg[1]);
1400 #endif
1401
1402 #ifndef CONFIG_SPL_BUILD
1403         pmuclk_init(priv->pmucru);
1404 #endif
1405         return 0;
1406 }
1407
1408 static int rk3399_pmuclk_ofdata_to_platdata(struct udevice *dev)
1409 {
1410 #if !CONFIG_IS_ENABLED(OF_PLATDATA)
1411         struct rk3399_pmuclk_priv *priv = dev_get_priv(dev);
1412
1413         priv->pmucru = dev_read_addr_ptr(dev);
1414 #endif
1415         return 0;
1416 }
1417
1418 static int rk3399_pmuclk_bind(struct udevice *dev)
1419 {
1420 #if CONFIG_IS_ENABLED(CONFIG_RESET_ROCKCHIP)
1421         int ret;
1422
1423         ret = offsetof(struct rk3399_pmucru, pmucru_softrst_con[0]);
1424         ret = rockchip_reset_bind(dev, ret, 2);
1425         if (ret)
1426                 debug("Warning: software reset driver bind faile\n");
1427 #endif
1428         return 0;
1429 }
1430
1431 static const struct udevice_id rk3399_pmuclk_ids[] = {
1432         { .compatible = "rockchip,rk3399-pmucru" },
1433         { }
1434 };
1435
1436 U_BOOT_DRIVER(rockchip_rk3399_pmuclk) = {
1437         .name           = "rockchip_rk3399_pmucru",
1438         .id             = UCLASS_CLK,
1439         .of_match       = rk3399_pmuclk_ids,
1440         .priv_auto_alloc_size = sizeof(struct rk3399_pmuclk_priv),
1441         .ofdata_to_platdata = rk3399_pmuclk_ofdata_to_platdata,
1442         .ops            = &rk3399_pmuclk_ops,
1443         .probe          = rk3399_pmuclk_probe,
1444         .bind           = rk3399_pmuclk_bind,
1445 #if CONFIG_IS_ENABLED(OF_PLATDATA)
1446         .platdata_auto_alloc_size = sizeof(struct rk3399_pmuclk_plat),
1447 #endif
1448 };