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 << \
 493                         CLK_I2C ##bus## _DIV_CON_SHIFT | \
 494                         CLK_I2C_PLL_SEL_MASK << \
 495                         CLK_I2C ##bus## _PLL_SEL_SHIFT)
 496
 497 #define I2C_CLK_REG_VALUE(bus, clk_div) \
 498                               ((clk_div - 1) << \
 499                                         CLK_I2C ##bus## _DIV_CON_SHIFT | \
 500                               CLK_I2C_PLL_SEL_GPLL << \
 501                                         CLK_I2C ##bus## _PLL_SEL_SHIFT)
 502
 503 #define I2C_CLK_DIV_VALUE(con, bus) \
 504                         (con >> CLK_I2C ##bus## _DIV_CON_SHIFT) & \
 505                                 I2C_DIV_CON_MASK;
 506
 507 #define I2C_PMUCLK_REG_MASK(bus) \
 508                         (I2C_DIV_CON_MASK << \
 509                          CLK_I2C ##bus## _DIV_CON_SHIFT)
 510
 511 #define I2C_PMUCLK_REG_VALUE(bus, clk_div) \
 512                                 ((clk_div - 1) << \
 513                                 CLK_I2C ##bus## _DIV_CON_SHIFT)
 514
 515 static ulong rk3399_i2c_get_clk(struct rk3399_cru *cru, ulong clk_id)
 516 {
 517         u32 div, con;
 518
 519         switch (clk_id) {
 520         case SCLK_I2C1:
 521                 con = readl(&cru->clksel_con[61]);
 522                 div = I2C_CLK_DIV_VALUE(con, 1);
 523                 break;
 524         case SCLK_I2C2:
 525                 con = readl(&cru->clksel_con[62]);
 526                 div = I2C_CLK_DIV_VALUE(con, 2);
 527                 break;
 528         case SCLK_I2C3:
 529                 con = readl(&cru->clksel_con[63]);
 530                 div = I2C_CLK_DIV_VALUE(con, 3);
 531                 break;
 532         case SCLK_I2C5:
 533                 con = readl(&cru->clksel_con[61]);
 534                 div = I2C_CLK_DIV_VALUE(con, 5);
 535                 break;
 536         case SCLK_I2C6:
 537                 con = readl(&cru->clksel_con[62]);
 538                 div = I2C_CLK_DIV_VALUE(con, 6);
 539                 break;
 540         case SCLK_I2C7:
 541                 con = readl(&cru->clksel_con[63]);
 542                 div = I2C_CLK_DIV_VALUE(con, 7);
 543                 break;
 544         default:
 545                 printf("do not support this i2c bus\n");
 546                 return -EINVAL;
 547         }
 548
 549         return DIV_TO_RATE(GPLL_HZ, div);
 550 }
 551
 552 static ulong rk3399_i2c_set_clk(struct rk3399_cru *cru, ulong clk_id, uint hz)
 553 {
 554         int src_clk_div;
 555
 556         /* i2c0,4,8 src clock from ppll, i2c1,2,3,5,6,7 src clock from gpll*/
 557         src_clk_div = GPLL_HZ / hz;
 558         assert(src_clk_div - 1 < 127);
 559
 560         switch (clk_id) {
 561         case SCLK_I2C1:
 562                 rk_clrsetreg(&cru->clksel_con[61], I2C_CLK_REG_MASK(1),
 563                              I2C_CLK_REG_VALUE(1, src_clk_div));
 564                 break;
 565         case SCLK_I2C2:
 566                 rk_clrsetreg(&cru->clksel_con[62], I2C_CLK_REG_MASK(2),
 567                              I2C_CLK_REG_VALUE(2, src_clk_div));
 568                 break;
 569         case SCLK_I2C3:
 570                 rk_clrsetreg(&cru->clksel_con[63], I2C_CLK_REG_MASK(3),
 571                              I2C_CLK_REG_VALUE(3, src_clk_div));
 572                 break;
 573         case SCLK_I2C5:
 574                 rk_clrsetreg(&cru->clksel_con[61], I2C_CLK_REG_MASK(5),
 575                              I2C_CLK_REG_VALUE(5, src_clk_div));
 576                 break;
 577         case SCLK_I2C6:
 578                 rk_clrsetreg(&cru->clksel_con[62], I2C_CLK_REG_MASK(6),
 579                              I2C_CLK_REG_VALUE(6, src_clk_div));
 580                 break;
 581         case SCLK_I2C7:
 582                 rk_clrsetreg(&cru->clksel_con[63], I2C_CLK_REG_MASK(7),
 583                              I2C_CLK_REG_VALUE(7, src_clk_div));
 584                 break;
 585         default:
 586                 printf("do not support this i2c bus\n");
 587                 return -EINVAL;
 588         }
 589
 590         return rk3399_i2c_get_clk(cru, clk_id);
 591 }
 592
 593 /*
 594  * RK3399 SPI clocks have a common divider-width (7 bits) and a single bit
 595  * to select either CPLL or GPLL as the clock-parent. The location within
 596  * the enclosing CLKSEL_CON (i.e. div_shift and sel_shift) are variable.
 597  */
 598
 599 struct spi_clkreg {
 600         uint8_t reg;  /* CLKSEL_CON[reg] register in CRU */
 601         uint8_t div_shift;
 602         uint8_t sel_shift;
 603 };
 604
 605 /*
 606  * The entries are numbered relative to their offset from SCLK_SPI0.
 607  *
 608  * Note that SCLK_SPI3 (which is configured via PMUCRU and requires different
 609  * logic is not supported).
 610  */
 611 static const struct spi_clkreg spi_clkregs[] = {
 612         [0] = { .reg = 59,
 613                 .div_shift = CLK_SPI0_PLL_DIV_CON_SHIFT,
 614                 .sel_shift = CLK_SPI0_PLL_SEL_SHIFT, },
 615         [1] = { .reg = 59,
 616                 .div_shift = CLK_SPI1_PLL_DIV_CON_SHIFT,
 617                 .sel_shift = CLK_SPI1_PLL_SEL_SHIFT, },
 618         [2] = { .reg = 60,
 619                 .div_shift = CLK_SPI2_PLL_DIV_CON_SHIFT,
 620                 .sel_shift = CLK_SPI2_PLL_SEL_SHIFT, },
 621         [3] = { .reg = 60,
 622                 .div_shift = CLK_SPI4_PLL_DIV_CON_SHIFT,
 623                 .sel_shift = CLK_SPI4_PLL_SEL_SHIFT, },
 624         [4] = { .reg = 58,
 625                 .div_shift = CLK_SPI5_PLL_DIV_CON_SHIFT,
 626                 .sel_shift = CLK_SPI5_PLL_SEL_SHIFT, },
 627 };
 628
 629 static ulong rk3399_spi_get_clk(struct rk3399_cru *cru, ulong clk_id)
 630 {
 631         const struct spi_clkreg *spiclk = NULL;
 632         u32 div, val;
 633
 634         switch (clk_id) {
 635         case SCLK_SPI0 ... SCLK_SPI5:
 636                 spiclk = &spi_clkregs[clk_id - SCLK_SPI0];
 637                 break;
 638
 639         default:
 640                 pr_err("%s: SPI clk-id %ld not supported\n", __func__, clk_id);
 641                 return -EINVAL;
 642         }
 643
 644         val = readl(&cru->clksel_con[spiclk->reg]);
 645         div = bitfield_extract(val, spiclk->div_shift,
 646                                CLK_SPI_PLL_DIV_CON_WIDTH);
 647
 648         return DIV_TO_RATE(GPLL_HZ, div);
 649 }
 650
 651 static ulong rk3399_spi_set_clk(struct rk3399_cru *cru, ulong clk_id, uint hz)
 652 {
 653         const struct spi_clkreg *spiclk = NULL;
 654         int src_clk_div;
 655
 656         src_clk_div = DIV_ROUND_UP(GPLL_HZ, hz) - 1;
 657         assert(src_clk_div < 128);
 658
 659         switch (clk_id) {
 660         case SCLK_SPI1 ... SCLK_SPI5:
 661                 spiclk = &spi_clkregs[clk_id - SCLK_SPI0];
 662                 break;
 663
 664         default:
 665                 pr_err("%s: SPI clk-id %ld not supported\n", __func__, clk_id);
 666                 return -EINVAL;
 667         }
 668
 669         rk_clrsetreg(&cru->clksel_con[spiclk->reg],
 670                      ((CLK_SPI_PLL_DIV_CON_MASK << spiclk->div_shift) |
 671                        (CLK_SPI_PLL_SEL_GPLL << spiclk->sel_shift)),
 672                      ((src_clk_div << spiclk->div_shift) |
 673                       (CLK_SPI_PLL_SEL_GPLL << spiclk->sel_shift)));
 674
 675         return rk3399_spi_get_clk(cru, clk_id);
 676 }
 677
 678 static ulong rk3399_vop_set_clk(struct rk3399_cru *cru, ulong clk_id, u32 hz)
 679 {
 680         struct pll_div vpll_config = {0};
 681         int aclk_vop = 198*MHz;
 682         void *aclkreg_addr, *dclkreg_addr;
 683         u32 div;
 684
 685         switch (clk_id) {
 686         case DCLK_VOP0:
 687                 aclkreg_addr = &cru->clksel_con[47];
 688                 dclkreg_addr = &cru->clksel_con[49];
 689                 break;
 690         case DCLK_VOP1:
 691                 aclkreg_addr = &cru->clksel_con[48];
 692                 dclkreg_addr = &cru->clksel_con[50];
 693                 break;
 694         default:
 695                 return -EINVAL;
 696         }
 697         /* vop aclk source clk: cpll */
 698         div = CPLL_HZ / aclk_vop;
 699         assert(div - 1 < 32);
 700
 701         rk_clrsetreg(aclkreg_addr,
 702                      ACLK_VOP_PLL_SEL_MASK | ACLK_VOP_DIV_CON_MASK,
 703                      ACLK_VOP_PLL_SEL_CPLL << ACLK_VOP_PLL_SEL_SHIFT |
 704                      (div - 1) << ACLK_VOP_DIV_CON_SHIFT);
 705
 706         /* vop dclk source from vpll, and equals to vpll(means div == 1) */
 707         if (pll_para_config(hz, &vpll_config))
 708                 return -1;
 709
 710         rkclk_set_pll(&cru->vpll_con[0], &vpll_config);
 711
 712         rk_clrsetreg(dclkreg_addr,
 713                      DCLK_VOP_DCLK_SEL_MASK | DCLK_VOP_PLL_SEL_MASK|
 714                      DCLK_VOP_DIV_CON_MASK,
 715                      DCLK_VOP_DCLK_SEL_DIVOUT << DCLK_VOP_DCLK_SEL_SHIFT |
 716                      DCLK_VOP_PLL_SEL_VPLL << DCLK_VOP_PLL_SEL_SHIFT |
 717                      (1 - 1) << DCLK_VOP_DIV_CON_SHIFT);
 718
 719         return hz;
 720 }
 721
 722 static ulong rk3399_mmc_get_clk(struct rk3399_cru *cru, uint clk_id)
 723 {
 724         u32 div, con;
 725
 726         switch (clk_id) {
 727         case HCLK_SDMMC:
 728         case SCLK_SDMMC:
 729                 con = readl(&cru->clksel_con[16]);
 730                 /* dwmmc controller have internal div 2 */
 731                 div = 2;
 732                 break;
 733         case SCLK_EMMC:
 734                 con = readl(&cru->clksel_con[21]);
 735                 div = 1;
 736                 break;
 737         default:
 738                 return -EINVAL;
 739         }
 740
 741         div *= (con & CLK_EMMC_DIV_CON_MASK) >> CLK_EMMC_DIV_CON_SHIFT;
 742         if ((con & CLK_EMMC_PLL_MASK) >> CLK_EMMC_PLL_SHIFT
 743                         == CLK_EMMC_PLL_SEL_24M)
 744                 return DIV_TO_RATE(OSC_HZ, div);
 745         else
 746                 return DIV_TO_RATE(GPLL_HZ, div);
 747 }
 748
 749 static ulong rk3399_mmc_set_clk(struct rk3399_cru *cru,
 750                                 ulong clk_id, ulong set_rate)
 751 {
 752         int src_clk_div;
 753         int aclk_emmc = 198*MHz;
 754
 755         switch (clk_id) {
 756         case HCLK_SDMMC:
 757         case SCLK_SDMMC:
 758                 /* Select clk_sdmmc source from GPLL by default */
 759                 /* mmc clock defaulg div 2 internal, provide double in cru */
 760                 src_clk_div = DIV_ROUND_UP(GPLL_HZ / 2, set_rate);
 761
 762                 if (src_clk_div > 128) {
 763                         /* use 24MHz source for 400KHz clock */
 764                         src_clk_div = DIV_ROUND_UP(OSC_HZ / 2, set_rate);
 765                         assert(src_clk_div - 1 < 128);
 766                         rk_clrsetreg(&cru->clksel_con[16],
 767                                      CLK_EMMC_PLL_MASK | CLK_EMMC_DIV_CON_MASK,
 768                                      CLK_EMMC_PLL_SEL_24M << CLK_EMMC_PLL_SHIFT |
 769                                      (src_clk_div - 1) << CLK_EMMC_DIV_CON_SHIFT);
 770                 } else {
 771                         rk_clrsetreg(&cru->clksel_con[16],
 772                                      CLK_EMMC_PLL_MASK | CLK_EMMC_DIV_CON_MASK,
 773                                      CLK_EMMC_PLL_SEL_GPLL << CLK_EMMC_PLL_SHIFT |
 774                                      (src_clk_div - 1) << CLK_EMMC_DIV_CON_SHIFT);
 775                 }
 776                 break;
 777         case SCLK_EMMC:
 778                 /* Select aclk_emmc source from GPLL */
 779                 src_clk_div = DIV_ROUND_UP(GPLL_HZ , aclk_emmc);
 780                 assert(src_clk_div - 1 < 32);
 781
 782                 rk_clrsetreg(&cru->clksel_con[21],
 783                              ACLK_EMMC_PLL_SEL_MASK | ACLK_EMMC_DIV_CON_MASK,
 784                              ACLK_EMMC_PLL_SEL_GPLL << ACLK_EMMC_PLL_SEL_SHIFT |
 785                              (src_clk_div - 1) << ACLK_EMMC_DIV_CON_SHIFT);
 786
 787                 /* Select clk_emmc source from GPLL too */
 788                 src_clk_div = DIV_ROUND_UP(GPLL_HZ, set_rate);
 789                 assert(src_clk_div - 1 < 128);
 790
 791                 rk_clrsetreg(&cru->clksel_con[22],
 792                              CLK_EMMC_PLL_MASK | CLK_EMMC_DIV_CON_MASK,
 793                              CLK_EMMC_PLL_SEL_GPLL << CLK_EMMC_PLL_SHIFT |
 794                              (src_clk_div - 1) << CLK_EMMC_DIV_CON_SHIFT);
 795                 break;
 796         default:
 797                 return -EINVAL;
 798         }
 799         return rk3399_mmc_get_clk(cru, clk_id);
 800 }
 801
 802 static ulong rk3399_gmac_set_clk(struct rk3399_cru *cru, ulong rate)
 803 {
 804         ulong ret;
 805
 806         /*
 807          * The RGMII CLK can be derived either from an external "clkin"
 808          * or can be generated from internally by a divider from SCLK_MAC.
 809          */
 810         if (readl(&cru->clksel_con[19]) & BIT(4)) {
 811                 /* An external clock will always generate the right rate... */
 812                 ret = rate;
 813         } else {
 814                 /*
 815                  * No platform uses an internal clock to date.
 816                  * Implement this once it becomes necessary and print an error
 817                  * if someone tries to use it (while it remains unimplemented).
 818                  */
 819                 pr_err("%s: internal clock is UNIMPLEMENTED\n", __func__);
 820                 ret = 0;
 821         }
 822
 823         return ret;
 824 }
 825
 826 #define PMUSGRF_DDR_RGN_CON16 0xff330040
 827 static ulong rk3399_ddr_set_clk(struct rk3399_cru *cru,
 828                                 ulong set_rate)
 829 {
 830         struct pll_div dpll_cfg;
 831
 832         /*  IC ECO bug, need to set this register */
 833         writel(0xc000c000, PMUSGRF_DDR_RGN_CON16);
 834
 835         /*  clk_ddrc == DPLL = 24MHz / refdiv * fbdiv / postdiv1 / postdiv2 */
 836         switch (set_rate) {
 837         case 200*MHz:
 838                 dpll_cfg = (struct pll_div)
 839                 {.refdiv = 1, .fbdiv = 50, .postdiv1 = 6, .postdiv2 = 1};
 840                 break;
 841         case 300*MHz:
 842                 dpll_cfg = (struct pll_div)
 843                 {.refdiv = 2, .fbdiv = 100, .postdiv1 = 4, .postdiv2 = 1};
 844                 break;
 845         case 666*MHz:
 846                 dpll_cfg = (struct pll_div)
 847                 {.refdiv = 2, .fbdiv = 111, .postdiv1 = 2, .postdiv2 = 1};
 848                 break;
 849         case 800*MHz:
 850                 dpll_cfg = (struct pll_div)
 851                 {.refdiv = 1, .fbdiv = 100, .postdiv1 = 3, .postdiv2 = 1};
 852                 break;
 853         case 933*MHz:
 854                 dpll_cfg = (struct pll_div)
 855                 {.refdiv = 1, .fbdiv = 116, .postdiv1 = 3, .postdiv2 = 1};
 856                 break;
 857         default:
 858                 pr_err("Unsupported SDRAM frequency!,%ld\n", set_rate);
 859         }
 860         rkclk_set_pll(&cru->dpll_con[0], &dpll_cfg);
 861
 862         return set_rate;
 863 }
 864
 865 static ulong rk3399_saradc_get_clk(struct rk3399_cru *cru)
 866 {
 867         u32 div, val;
 868
 869         val = readl(&cru->clksel_con[26]);
 870         div = bitfield_extract(val, CLK_SARADC_DIV_CON_SHIFT,
 871                                CLK_SARADC_DIV_CON_WIDTH);
 872
 873         return DIV_TO_RATE(OSC_HZ, div);
 874 }
 875
 876 static ulong rk3399_saradc_set_clk(struct rk3399_cru *cru, uint hz)
 877 {
 878         int src_clk_div;
 879
 880         src_clk_div = DIV_ROUND_UP(OSC_HZ, hz) - 1;
 881         assert(src_clk_div < 128);
 882
 883         rk_clrsetreg(&cru->clksel_con[26],
 884                      CLK_SARADC_DIV_CON_MASK,
 885                      src_clk_div << CLK_SARADC_DIV_CON_SHIFT);
 886
 887         return rk3399_saradc_get_clk(cru);
 888 }
 889
 890 static ulong rk3399_clk_get_rate(struct clk *clk)
 891 {
 892         struct rk3399_clk_priv *priv = dev_get_priv(clk->dev);
 893         ulong rate = 0;
 894
 895         switch (clk->id) {
 896         case 0 ... 63:
 897                 return 0;
 898         case HCLK_SDMMC:
 899         case SCLK_SDMMC:
 900         case SCLK_EMMC:
 901                 rate = rk3399_mmc_get_clk(priv->cru, clk->id);
 902                 break;
 903         case SCLK_I2C1:
 904         case SCLK_I2C2:
 905         case SCLK_I2C3:
 906         case SCLK_I2C5:
 907         case SCLK_I2C6:
 908         case SCLK_I2C7:
 909                 rate = rk3399_i2c_get_clk(priv->cru, clk->id);
 910                 break;
 911         case SCLK_SPI0...SCLK_SPI5:
 912                 rate = rk3399_spi_get_clk(priv->cru, clk->id);
 913                 break;
 914         case SCLK_UART0:
 915         case SCLK_UART1:
 916         case SCLK_UART2:
 917         case SCLK_UART3:
 918                 return 24000000;
 919                 break;
 920         case PCLK_HDMI_CTRL:
 921                 break;
 922         case DCLK_VOP0:
 923         case DCLK_VOP1:
 924                 break;
 925         case PCLK_EFUSE1024NS:
 926                 break;
 927         case SCLK_SARADC:
 928                 rate = rk3399_saradc_get_clk(priv->cru);
 929                 break;
 930         case ACLK_VIO:
 931         case ACLK_HDCP:
 932         case ACLK_GIC_PRE:
 933         case PCLK_DDR:
 934                 break;
 935         default:
 936                 log_debug("Unknown clock %lu\n", clk->id);
 937                 return -ENOENT;
 938         }
 939
 940         return rate;
 941 }
 942
 943 static ulong rk3399_clk_set_rate(struct clk *clk, ulong rate)
 944 {
 945         struct rk3399_clk_priv *priv = dev_get_priv(clk->dev);
 946         ulong ret = 0;
 947
 948         switch (clk->id) {
 949         case 0 ... 63:
 950                 return 0;
 951
 952         case ACLK_PERIHP:
 953         case HCLK_PERIHP:
 954         case PCLK_PERIHP:
 955                 return 0;
 956
 957         case ACLK_PERILP0:
 958         case HCLK_PERILP0:
 959         case PCLK_PERILP0:
 960                 return 0;
 961
 962         case ACLK_CCI:
 963                 return 0;
 964
 965         case HCLK_PERILP1:
 966         case PCLK_PERILP1:
 967                 return 0;
 968
 969         case HCLK_SDMMC:
 970         case SCLK_SDMMC:
 971         case SCLK_EMMC:
 972                 ret = rk3399_mmc_set_clk(priv->cru, clk->id, rate);
 973                 break;
 974         case SCLK_MAC:
 975                 ret = rk3399_gmac_set_clk(priv->cru, rate);
 976                 break;
 977         case SCLK_I2C1:
 978         case SCLK_I2C2:
 979         case SCLK_I2C3:
 980         case SCLK_I2C5:
 981         case SCLK_I2C6:
 982         case SCLK_I2C7:
 983                 ret = rk3399_i2c_set_clk(priv->cru, clk->id, rate);
 984                 break;
 985         case SCLK_SPI0...SCLK_SPI5:
 986                 ret = rk3399_spi_set_clk(priv->cru, clk->id, rate);
 987                 break;
 988         case PCLK_HDMI_CTRL:
 989         case PCLK_VIO_GRF:
 990                 /* the PCLK gates for video are enabled by default */
 991                 break;
 992         case DCLK_VOP0:
 993         case DCLK_VOP1:
 994                 ret = rk3399_vop_set_clk(priv->cru, clk->id, rate);
 995                 break;
 996         case SCLK_DDRCLK:
 997                 ret = rk3399_ddr_set_clk(priv->cru, rate);
 998                 break;
 999         case PCLK_EFUSE1024NS:
1000                 break;
1001         case SCLK_SARADC:
1002                 ret = rk3399_saradc_set_clk(priv->cru, rate);
1003                 break;
1004         case ACLK_VIO:
1005         case ACLK_HDCP:
1006         case ACLK_GIC_PRE:
1007         case PCLK_DDR:
1008                 return 0;
1009         default:
1010                 log_debug("Unknown clock %lu\n", clk->id);
1011                 return -ENOENT;
1012         }
1013
1014         return ret;
1015 }
1016
1017 static int __maybe_unused rk3399_gmac_set_parent(struct clk *clk, struct clk *parent)
1018 {
1019         struct rk3399_clk_priv *priv = dev_get_priv(clk->dev);
1020         const char *clock_output_name;
1021         int ret;
1022
1023         /*
1024          * If the requested parent is in the same clock-controller and
1025          * the id is SCLK_MAC ("clk_gmac"), switch to the internal clock.
1026          */
1027         if ((parent->dev == clk->dev) && (parent->id == SCLK_MAC)) {
1028                 debug("%s: switching RGMII to SCLK_MAC\n", __func__);
1029                 rk_clrreg(&priv->cru->clksel_con[19], BIT(4));
1030                 return 0;
1031         }
1032
1033         /*
1034          * Otherwise, we need to check the clock-output-names of the
1035          * requested parent to see if the requested id is "clkin_gmac".
1036          */
1037         ret = dev_read_string_index(parent->dev, "clock-output-names",
1038                                     parent->id, &clock_output_name);
1039         if (ret < 0)
1040                 return -ENODATA;
1041
1042         /* If this is "clkin_gmac", switch to the external clock input */
1043         if (!strcmp(clock_output_name, "clkin_gmac")) {
1044                 debug("%s: switching RGMII to CLKIN\n", __func__);
1045                 rk_setreg(&priv->cru->clksel_con[19], BIT(4));
1046                 return 0;
1047         }
1048
1049         return -EINVAL;
1050 }
1051
1052 static int __maybe_unused rk3399_clk_set_parent(struct clk *clk, struct clk *parent)
1053 {
1054         switch (clk->id) {
1055         case SCLK_RMII_SRC:
1056                 return rk3399_gmac_set_parent(clk, parent);
1057         }
1058
1059         debug("%s: unsupported clk %ld\n", __func__, clk->id);
1060         return -ENOENT;
1061 }
1062
1063 static int rk3399_clk_enable(struct clk *clk)
1064 {
1065         switch (clk->id) {
1066         case HCLK_HOST0:
1067         case HCLK_HOST0_ARB:
1068         case HCLK_HOST1:
1069         case HCLK_HOST1_ARB:
1070                 return 0;
1071
1072         case SCLK_MAC:
1073         case SCLK_MAC_RX:
1074         case SCLK_MAC_TX:
1075         case SCLK_MACREF:
1076         case SCLK_MACREF_OUT:
1077         case ACLK_GMAC:
1078         case PCLK_GMAC:
1079                 /* Required to successfully probe the Designware GMAC driver */
1080                 return 0;
1081         }
1082
1083         debug("%s: unsupported clk %ld\n", __func__, clk->id);
1084         return -ENOENT;
1085 }
1086
1087 static struct clk_ops rk3399_clk_ops = {
1088         .get_rate = rk3399_clk_get_rate,
1089         .set_rate = rk3399_clk_set_rate,
1090 #if CONFIG_IS_ENABLED(OF_CONTROL) && !CONFIG_IS_ENABLED(OF_PLATDATA)
1091         .set_parent = rk3399_clk_set_parent,
1092 #endif
1093         .enable = rk3399_clk_enable,
1094 };
1095
1096 #ifdef CONFIG_SPL_BUILD
1097 static void rkclk_init(struct rk3399_cru *cru)
1098 {
1099         u32 aclk_div;
1100         u32 hclk_div;
1101         u32 pclk_div;
1102
1103         rk3399_configure_cpu_l(cru, APLL_L_600_MHZ);
1104         rk3399_configure_cpu_b(cru, APLL_B_600_MHZ);
1105         /*
1106          * some cru registers changed by bootrom, we'd better reset them to
1107          * reset/default values described in TRM to avoid confusion in kernel.
1108          * Please consider these three lines as a fix of bootrom bug.
1109          */
1110         rk_clrsetreg(&cru->clksel_con[12], 0xffff, 0x4101);
1111         rk_clrsetreg(&cru->clksel_con[19], 0xffff, 0x033f);
1112         rk_clrsetreg(&cru->clksel_con[56], 0x0003, 0x0003);
1113
1114         /* configure gpll cpll */
1115         rkclk_set_pll(&cru->gpll_con[0], &gpll_init_cfg);
1116         rkclk_set_pll(&cru->cpll_con[0], &cpll_init_cfg);
1117
1118         /* configure perihp aclk, hclk, pclk */
1119         aclk_div = GPLL_HZ / PERIHP_ACLK_HZ - 1;
1120         assert((aclk_div + 1) * PERIHP_ACLK_HZ == GPLL_HZ && aclk_div < 0x1f);
1121
1122         hclk_div = PERIHP_ACLK_HZ / PERIHP_HCLK_HZ - 1;
1123         assert((hclk_div + 1) * PERIHP_HCLK_HZ ==
1124                PERIHP_ACLK_HZ && (hclk_div < 0x4));
1125
1126         pclk_div = PERIHP_ACLK_HZ / PERIHP_PCLK_HZ - 1;
1127         assert((pclk_div + 1) * PERIHP_PCLK_HZ ==
1128                PERIHP_ACLK_HZ && (pclk_div < 0x7));
1129
1130         rk_clrsetreg(&cru->clksel_con[14],
1131                      PCLK_PERIHP_DIV_CON_MASK | HCLK_PERIHP_DIV_CON_MASK |
1132                      ACLK_PERIHP_PLL_SEL_MASK | ACLK_PERIHP_DIV_CON_MASK,
1133                      pclk_div << PCLK_PERIHP_DIV_CON_SHIFT |
1134                      hclk_div << HCLK_PERIHP_DIV_CON_SHIFT |
1135                      ACLK_PERIHP_PLL_SEL_GPLL << ACLK_PERIHP_PLL_SEL_SHIFT |
1136                      aclk_div << ACLK_PERIHP_DIV_CON_SHIFT);
1137
1138         /* configure perilp0 aclk, hclk, pclk */
1139         aclk_div = GPLL_HZ / PERILP0_ACLK_HZ - 1;
1140         assert((aclk_div + 1) * PERILP0_ACLK_HZ == GPLL_HZ && aclk_div < 0x1f);
1141
1142         hclk_div = PERILP0_ACLK_HZ / PERILP0_HCLK_HZ - 1;
1143         assert((hclk_div + 1) * PERILP0_HCLK_HZ ==
1144                PERILP0_ACLK_HZ && (hclk_div < 0x4));
1145
1146         pclk_div = PERILP0_ACLK_HZ / PERILP0_PCLK_HZ - 1;
1147         assert((pclk_div + 1) * PERILP0_PCLK_HZ ==
1148                PERILP0_ACLK_HZ && (pclk_div < 0x7));
1149
1150         rk_clrsetreg(&cru->clksel_con[23],
1151                      PCLK_PERILP0_DIV_CON_MASK | HCLK_PERILP0_DIV_CON_MASK |
1152                      ACLK_PERILP0_PLL_SEL_MASK | ACLK_PERILP0_DIV_CON_MASK,
1153                      pclk_div << PCLK_PERILP0_DIV_CON_SHIFT |
1154                      hclk_div << HCLK_PERILP0_DIV_CON_SHIFT |
1155                      ACLK_PERILP0_PLL_SEL_GPLL << ACLK_PERILP0_PLL_SEL_SHIFT |
1156                      aclk_div << ACLK_PERILP0_DIV_CON_SHIFT);
1157
1158         /* perilp1 hclk select gpll as source */
1159         hclk_div = GPLL_HZ / PERILP1_HCLK_HZ - 1;
1160         assert((hclk_div + 1) * PERILP1_HCLK_HZ ==
1161                GPLL_HZ && (hclk_div < 0x1f));
1162
1163         pclk_div = PERILP1_HCLK_HZ / PERILP1_HCLK_HZ - 1;
1164         assert((pclk_div + 1) * PERILP1_HCLK_HZ ==
1165                PERILP1_HCLK_HZ && (hclk_div < 0x7));
1166
1167         rk_clrsetreg(&cru->clksel_con[25],
1168                      PCLK_PERILP1_DIV_CON_MASK | HCLK_PERILP1_DIV_CON_MASK |
1169                      HCLK_PERILP1_PLL_SEL_MASK,
1170                      pclk_div << PCLK_PERILP1_DIV_CON_SHIFT |
1171                      hclk_div << HCLK_PERILP1_DIV_CON_SHIFT |
1172                      HCLK_PERILP1_PLL_SEL_GPLL << HCLK_PERILP1_PLL_SEL_SHIFT);
1173 }
1174 #endif
1175
1176 static int rk3399_clk_probe(struct udevice *dev)
1177 {
1178 #ifdef CONFIG_SPL_BUILD
1179         struct rk3399_clk_priv *priv = dev_get_priv(dev);
1180
1181 #if CONFIG_IS_ENABLED(OF_PLATDATA)
1182         struct rk3399_clk_plat *plat = dev_get_platdata(dev);
1183
1184         priv->cru = map_sysmem(plat->dtd.reg[0], plat->dtd.reg[1]);
1185 #endif
1186         rkclk_init(priv->cru);
1187 #endif
1188         return 0;
1189 }
1190
1191 static int rk3399_clk_ofdata_to_platdata(struct udevice *dev)
1192 {
1193 #if !CONFIG_IS_ENABLED(OF_PLATDATA)
1194         struct rk3399_clk_priv *priv = dev_get_priv(dev);
1195
1196         priv->cru = dev_read_addr_ptr(dev);
1197 #endif
1198         return 0;
1199 }
1200
1201 static int rk3399_clk_bind(struct udevice *dev)
1202 {
1203         int ret;
1204         struct udevice *sys_child;
1205         struct sysreset_reg *priv;
1206
1207         /* The reset driver does not have a device node, so bind it here */
1208         ret = device_bind_driver(dev, "rockchip_sysreset", "sysreset",
1209                                  &sys_child);
1210         if (ret) {
1211                 debug("Warning: No sysreset driver: ret=%d\n", ret);
1212         } else {
1213                 priv = malloc(sizeof(struct sysreset_reg));
1214                 priv->glb_srst_fst_value = offsetof(struct rk3399_cru,
1215                                                     glb_srst_fst_value);
1216                 priv->glb_srst_snd_value = offsetof(struct rk3399_cru,
1217                                                     glb_srst_snd_value);
1218                 sys_child->priv = priv;
1219         }
1220
1221 #if CONFIG_IS_ENABLED(CONFIG_RESET_ROCKCHIP)
1222         ret = offsetof(struct rk3399_cru, softrst_con[0]);
1223         ret = rockchip_reset_bind(dev, ret, 21);
1224         if (ret)
1225                 debug("Warning: software reset driver bind faile\n");
1226 #endif
1227
1228         return 0;
1229 }
1230
1231 static const struct udevice_id rk3399_clk_ids[] = {
1232         { .compatible = "rockchip,rk3399-cru" },
1233         { }
1234 };
1235
1236 U_BOOT_DRIVER(clk_rk3399) = {
1237         .name           = "rockchip_rk3399_cru",
1238         .id             = UCLASS_CLK,
1239         .of_match       = rk3399_clk_ids,
1240         .priv_auto_alloc_size = sizeof(struct rk3399_clk_priv),
1241         .ofdata_to_platdata = rk3399_clk_ofdata_to_platdata,
1242         .ops            = &rk3399_clk_ops,
1243         .bind           = rk3399_clk_bind,
1244         .probe          = rk3399_clk_probe,
1245 #if CONFIG_IS_ENABLED(OF_PLATDATA)
1246         .platdata_auto_alloc_size = sizeof(struct rk3399_clk_plat),
1247 #endif
1248 };
1249
1250 static ulong rk3399_i2c_get_pmuclk(struct rk3399_pmucru *pmucru, ulong clk_id)
1251 {
1252         u32 div, con;
1253
1254         switch (clk_id) {
1255         case SCLK_I2C0_PMU:
1256                 con = readl(&pmucru->pmucru_clksel[2]);
1257                 div = I2C_CLK_DIV_VALUE(con, 0);
1258                 break;
1259         case SCLK_I2C4_PMU:
1260                 con = readl(&pmucru->pmucru_clksel[3]);
1261                 div = I2C_CLK_DIV_VALUE(con, 4);
1262                 break;
1263         case SCLK_I2C8_PMU:
1264                 con = readl(&pmucru->pmucru_clksel[2]);
1265                 div = I2C_CLK_DIV_VALUE(con, 8);
1266                 break;
1267         default:
1268                 printf("do not support this i2c bus\n");
1269                 return -EINVAL;
1270         }
1271
1272         return DIV_TO_RATE(PPLL_HZ, div);
1273 }
1274
1275 static ulong rk3399_i2c_set_pmuclk(struct rk3399_pmucru *pmucru, ulong clk_id,
1276                                    uint hz)
1277 {
1278         int src_clk_div;
1279
1280         src_clk_div = PPLL_HZ / hz;
1281         assert(src_clk_div - 1 < 127);
1282
1283         switch (clk_id) {
1284         case SCLK_I2C0_PMU:
1285                 rk_clrsetreg(&pmucru->pmucru_clksel[2], I2C_PMUCLK_REG_MASK(0),
1286                              I2C_PMUCLK_REG_VALUE(0, src_clk_div));
1287                 break;
1288         case SCLK_I2C4_PMU:
1289                 rk_clrsetreg(&pmucru->pmucru_clksel[3], I2C_PMUCLK_REG_MASK(4),
1290                              I2C_PMUCLK_REG_VALUE(4, src_clk_div));
1291                 break;
1292         case SCLK_I2C8_PMU:
1293                 rk_clrsetreg(&pmucru->pmucru_clksel[2], I2C_PMUCLK_REG_MASK(8),
1294                              I2C_PMUCLK_REG_VALUE(8, src_clk_div));
1295                 break;
1296         default:
1297                 printf("do not support this i2c bus\n");
1298                 return -EINVAL;
1299         }
1300
1301         return DIV_TO_RATE(PPLL_HZ, src_clk_div);
1302 }
1303
1304 static ulong rk3399_pwm_get_clk(struct rk3399_pmucru *pmucru)
1305 {
1306         u32 div, con;
1307
1308         /* PWM closk rate is same as pclk_pmu */
1309         con = readl(&pmucru->pmucru_clksel[0]);
1310         div = con & PMU_PCLK_DIV_CON_MASK;
1311
1312         return DIV_TO_RATE(PPLL_HZ, div);
1313 }
1314
1315 static ulong rk3399_pmuclk_get_rate(struct clk *clk)
1316 {
1317         struct rk3399_pmuclk_priv *priv = dev_get_priv(clk->dev);
1318         ulong rate = 0;
1319
1320         switch (clk->id) {
1321         case PLL_PPLL:
1322                 return PPLL_HZ;
1323         case PCLK_RKPWM_PMU:
1324                 rate = rk3399_pwm_get_clk(priv->pmucru);
1325                 break;
1326         case SCLK_I2C0_PMU:
1327         case SCLK_I2C4_PMU:
1328         case SCLK_I2C8_PMU:
1329                 rate = rk3399_i2c_get_pmuclk(priv->pmucru, clk->id);
1330                 break;
1331         default:
1332                 return -ENOENT;
1333         }
1334
1335         return rate;
1336 }
1337
1338 static ulong rk3399_pmuclk_set_rate(struct clk *clk, ulong rate)
1339 {
1340         struct rk3399_pmuclk_priv *priv = dev_get_priv(clk->dev);
1341         ulong ret = 0;
1342
1343         switch (clk->id) {
1344         case PLL_PPLL:
1345                 /*
1346                  * This has already been set up and we don't want/need
1347                  * to change it here.  Accept the request though, as the
1348                  * device-tree has this in an 'assigned-clocks' list.
1349                  */
1350                 return PPLL_HZ;
1351         case SCLK_I2C0_PMU:
1352         case SCLK_I2C4_PMU:
1353         case SCLK_I2C8_PMU:
1354                 ret = rk3399_i2c_set_pmuclk(priv->pmucru, clk->id, rate);
1355                 break;
1356         default:
1357                 return -ENOENT;
1358         }
1359
1360         return ret;
1361 }
1362
1363 static struct clk_ops rk3399_pmuclk_ops = {
1364         .get_rate = rk3399_pmuclk_get_rate,
1365         .set_rate = rk3399_pmuclk_set_rate,
1366 };
1367
1368 #ifndef CONFIG_SPL_BUILD
1369 static void pmuclk_init(struct rk3399_pmucru *pmucru)
1370 {
1371         u32 pclk_div;
1372
1373         /*  configure pmu pll(ppll) */
1374         rkclk_set_pll(&pmucru->ppll_con[0], &ppll_init_cfg);
1375
1376         /*  configure pmu pclk */
1377         pclk_div = PPLL_HZ / PMU_PCLK_HZ - 1;
1378         rk_clrsetreg(&pmucru->pmucru_clksel[0],
1379                      PMU_PCLK_DIV_CON_MASK,
1380                      pclk_div << PMU_PCLK_DIV_CON_SHIFT);
1381 }
1382 #endif
1383
1384 static int rk3399_pmuclk_probe(struct udevice *dev)
1385 {
1386 #if CONFIG_IS_ENABLED(OF_PLATDATA) || !defined(CONFIG_SPL_BUILD)
1387         struct rk3399_pmuclk_priv *priv = dev_get_priv(dev);
1388 #endif
1389
1390 #if CONFIG_IS_ENABLED(OF_PLATDATA)
1391         struct rk3399_pmuclk_plat *plat = dev_get_platdata(dev);
1392
1393         priv->pmucru = map_sysmem(plat->dtd.reg[0], plat->dtd.reg[1]);
1394 #endif
1395
1396 #ifndef CONFIG_SPL_BUILD
1397         pmuclk_init(priv->pmucru);
1398 #endif
1399         return 0;
1400 }
1401
1402 static int rk3399_pmuclk_ofdata_to_platdata(struct udevice *dev)
1403 {
1404 #if !CONFIG_IS_ENABLED(OF_PLATDATA)
1405         struct rk3399_pmuclk_priv *priv = dev_get_priv(dev);
1406
1407         priv->pmucru = dev_read_addr_ptr(dev);
1408 #endif
1409         return 0;
1410 }
1411
1412 static int rk3399_pmuclk_bind(struct udevice *dev)
1413 {
1414 #if CONFIG_IS_ENABLED(CONFIG_RESET_ROCKCHIP)
1415         int ret;
1416
1417         ret = offsetof(struct rk3399_pmucru, pmucru_softrst_con[0]);
1418         ret = rockchip_reset_bind(dev, ret, 2);
1419         if (ret)
1420                 debug("Warning: software reset driver bind faile\n");
1421 #endif
1422         return 0;
1423 }
1424
1425 static const struct udevice_id rk3399_pmuclk_ids[] = {
1426         { .compatible = "rockchip,rk3399-pmucru" },
1427         { }
1428 };
1429
1430 U_BOOT_DRIVER(rockchip_rk3399_pmuclk) = {
1431         .name           = "rockchip_rk3399_pmucru",
1432         .id             = UCLASS_CLK,
1433         .of_match       = rk3399_pmuclk_ids,
1434         .priv_auto_alloc_size = sizeof(struct rk3399_pmuclk_priv),
1435         .ofdata_to_platdata = rk3399_pmuclk_ofdata_to_platdata,
1436         .ops            = &rk3399_pmuclk_ops,
1437         .probe          = rk3399_pmuclk_probe,
1438         .bind           = rk3399_pmuclk_bind,
1439 #if CONFIG_IS_ENABLED(OF_PLATDATA)
1440         .platdata_auto_alloc_size = sizeof(struct rk3399_pmuclk_plat),
1441 #endif
1442 };