arch/arm/mach-rockchip/rk3288/sdram_rk3288.c

   1 /*
   2  * (C) Copyright 2015 Google, Inc
   3  * Copyright 2014 Rockchip Inc.
   4  *
   5  * SPDX-License-Identifier:     GPL-2.0
   6  *
   7  * Adapted from coreboot.
   8  */
   9
  10 #include <common.h>
  11 #include <clk.h>
  12 #include <dm.h>
  13 #include <dt-structs.h>
  14 #include <errno.h>
  15 #include <ram.h>
  16 #include <regmap.h>
  17 #include <syscon.h>
  18 #include <asm/io.h>
  19 #include <asm/arch/clock.h>
  20 #include <asm/arch/cru_rk3288.h>
  21 #include <asm/arch/ddr_rk3288.h>
  22 #include <asm/arch/grf_rk3288.h>
  23 #include <asm/arch/pmu_rk3288.h>
  24 #include <asm/arch/sdram.h>
  25 #include <linux/err.h>
  26 #include <power/regulator.h>
  27 #include <power/rk808_pmic.h>
  28
  29 DECLARE_GLOBAL_DATA_PTR;
  30
  31 struct chan_info {
  32         struct rk3288_ddr_pctl *pctl;
  33         struct rk3288_ddr_publ *publ;
  34         struct rk3288_msch *msch;
  35 };
  36
  37 struct dram_info {
  38         struct chan_info chan[2];
  39         struct ram_info info;
  40         struct clk ddr_clk;
  41         struct rk3288_cru *cru;
  42         struct rk3288_grf *grf;
  43         struct rk3288_sgrf *sgrf;
  44         struct rk3288_pmu *pmu;
  45         bool is_veyron;
  46 };
  47
  48 struct rk3288_sdram_params {
  49 #if CONFIG_IS_ENABLED(OF_PLATDATA)
  50         struct dtd_rockchip_rk3288_dmc of_plat;
  51 #endif
  52         struct rk3288_sdram_channel ch[2];
  53         struct rk3288_sdram_pctl_timing pctl_timing;
  54         struct rk3288_sdram_phy_timing phy_timing;
  55         struct rk3288_base_params base;
  56         int num_channels;
  57         struct regmap *map;
  58 };
  59
  60 #define TEST_PATTEN     0x5aa5f00f
  61 #define DQS_GATE_TRAINING_ERROR_RANK0   (1 << 4)
  62 #define DQS_GATE_TRAINING_ERROR_RANK1   (2 << 4)
  63
  64 #ifdef CONFIG_SPL_BUILD
  65 static void copy_to_reg(u32 *dest, const u32 *src, u32 n)
  66 {
  67         int i;
  68
  69         for (i = 0; i < n / sizeof(u32); i++) {
  70                 writel(*src, dest);
  71                 src++;
  72                 dest++;
  73         }
  74 }
  75
  76 static void ddr_reset(struct rk3288_cru *cru, u32 ch, u32 ctl, u32 phy)
  77 {
  78         u32 phy_ctl_srstn_shift = 4 + 5 * ch;
  79         u32 ctl_psrstn_shift = 3 + 5 * ch;
  80         u32 ctl_srstn_shift = 2 + 5 * ch;
  81         u32 phy_psrstn_shift = 1 + 5 * ch;
  82         u32 phy_srstn_shift = 5 * ch;
  83
  84         rk_clrsetreg(&cru->cru_softrst_con[10],
  85                      1 << phy_ctl_srstn_shift | 1 << ctl_psrstn_shift |
  86                      1 << ctl_srstn_shift | 1 << phy_psrstn_shift |
  87                      1 << phy_srstn_shift,
  88                      phy << phy_ctl_srstn_shift | ctl << ctl_psrstn_shift |
  89                      ctl << ctl_srstn_shift | phy << phy_psrstn_shift |
  90                      phy << phy_srstn_shift);
  91 }
  92
  93 static void ddr_phy_ctl_reset(struct rk3288_cru *cru, u32 ch, u32 n)
  94 {
  95         u32 phy_ctl_srstn_shift = 4 + 5 * ch;
  96
  97         rk_clrsetreg(&cru->cru_softrst_con[10],
  98                      1 << phy_ctl_srstn_shift, n << phy_ctl_srstn_shift);
  99 }
 100
 101 static void phy_pctrl_reset(struct rk3288_cru *cru,
 102                             struct rk3288_ddr_publ *publ,
 103                             u32 channel)
 104 {
 105         int i;
 106
 107         ddr_reset(cru, channel, 1, 1);
 108         udelay(1);
 109         clrbits_le32(&publ->acdllcr, ACDLLCR_DLLSRST);
 110         for (i = 0; i < 4; i++)
 111                 clrbits_le32(&publ->datx8[i].dxdllcr, DXDLLCR_DLLSRST);
 112
 113         udelay(10);
 114         setbits_le32(&publ->acdllcr, ACDLLCR_DLLSRST);
 115         for (i = 0; i < 4; i++)
 116                 setbits_le32(&publ->datx8[i].dxdllcr, DXDLLCR_DLLSRST);
 117
 118         udelay(10);
 119         ddr_reset(cru, channel, 1, 0);
 120         udelay(10);
 121         ddr_reset(cru, channel, 0, 0);
 122         udelay(10);
 123 }
 124
 125 static void phy_dll_bypass_set(struct rk3288_ddr_publ *publ,
 126         u32 freq)
 127 {
 128         int i;
 129         if (freq <= 250000000) {
 130                 if (freq <= 150000000)
 131                         clrbits_le32(&publ->dllgcr, SBIAS_BYPASS);
 132                 else
 133                         setbits_le32(&publ->dllgcr, SBIAS_BYPASS);
 134                 setbits_le32(&publ->acdllcr, ACDLLCR_DLLDIS);
 135                 for (i = 0; i < 4; i++)
 136                         setbits_le32(&publ->datx8[i].dxdllcr,
 137                                      DXDLLCR_DLLDIS);
 138
 139                 setbits_le32(&publ->pir, PIR_DLLBYP);
 140         } else {
 141                 clrbits_le32(&publ->dllgcr, SBIAS_BYPASS);
 142                 clrbits_le32(&publ->acdllcr, ACDLLCR_DLLDIS);
 143                 for (i = 0; i < 4; i++) {
 144                         clrbits_le32(&publ->datx8[i].dxdllcr,
 145                                      DXDLLCR_DLLDIS);
 146                 }
 147
 148                 clrbits_le32(&publ->pir, PIR_DLLBYP);
 149         }
 150 }
 151
 152 static void dfi_cfg(struct rk3288_ddr_pctl *pctl, u32 dramtype)
 153 {
 154         writel(DFI_INIT_START, &pctl->dfistcfg0);
 155         writel(DFI_DRAM_CLK_SR_EN | DFI_DRAM_CLK_DPD_EN,
 156                &pctl->dfistcfg1);
 157         writel(DFI_PARITY_INTR_EN | DFI_PARITY_EN, &pctl->dfistcfg2);
 158         writel(7 << TLP_RESP_TIME_SHIFT | LP_SR_EN | LP_PD_EN,
 159                &pctl->dfilpcfg0);
 160
 161         writel(2 << TCTRL_DELAY_TIME_SHIFT, &pctl->dfitctrldelay);
 162         writel(1 << TPHY_WRDATA_TIME_SHIFT, &pctl->dfitphywrdata);
 163         writel(0xf << TPHY_RDLAT_TIME_SHIFT, &pctl->dfitphyrdlat);
 164         writel(2 << TDRAM_CLK_DIS_TIME_SHIFT, &pctl->dfitdramclkdis);
 165         writel(2 << TDRAM_CLK_EN_TIME_SHIFT, &pctl->dfitdramclken);
 166         writel(1, &pctl->dfitphyupdtype0);
 167
 168         /* cs0 and cs1 write odt enable */
 169         writel((RANK0_ODT_WRITE_SEL | RANK1_ODT_WRITE_SEL),
 170                &pctl->dfiodtcfg);
 171         /* odt write length */
 172         writel(7 << ODT_LEN_BL8_W_SHIFT, &pctl->dfiodtcfg1);
 173         /* phyupd and ctrlupd disabled */
 174         writel(0, &pctl->dfiupdcfg);
 175 }
 176
 177 static void ddr_set_enable(struct rk3288_grf *grf, uint channel, bool enable)
 178 {
 179         uint val = 0;
 180
 181         if (enable) {
 182                 val = 1 << (channel ? DDR1_16BIT_EN_SHIFT :
 183                                 DDR0_16BIT_EN_SHIFT);
 184         }
 185         rk_clrsetreg(&grf->soc_con0,
 186                      1 << (channel ? DDR1_16BIT_EN_SHIFT : DDR0_16BIT_EN_SHIFT),
 187                      val);
 188 }
 189
 190 static void ddr_set_ddr3_mode(struct rk3288_grf *grf, uint channel,
 191                               bool ddr3_mode)
 192 {
 193         uint mask, val;
 194
 195         mask = 1 << (channel ? MSCH1_MAINDDR3_SHIFT : MSCH0_MAINDDR3_SHIFT);
 196         val = ddr3_mode << (channel ? MSCH1_MAINDDR3_SHIFT :
 197                                         MSCH0_MAINDDR3_SHIFT);
 198         rk_clrsetreg(&grf->soc_con0, mask, val);
 199 }
 200
 201 static void ddr_set_en_bst_odt(struct rk3288_grf *grf, uint channel,
 202                                bool enable, bool enable_bst, bool enable_odt)
 203 {
 204         uint mask;
 205         bool disable_bst = !enable_bst;
 206
 207         mask = channel ?
 208                 (1 << LPDDR3_EN1_SHIFT | 1 << UPCTL1_BST_DIABLE_SHIFT |
 209                         1 << UPCTL1_LPDDR3_ODT_EN_SHIFT) :
 210                 (1 << LPDDR3_EN0_SHIFT | 1 << UPCTL0_BST_DIABLE_SHIFT |
 211                         1 << UPCTL0_LPDDR3_ODT_EN_SHIFT);
 212         rk_clrsetreg(&grf->soc_con2, mask,
 213                      enable << (channel ? LPDDR3_EN1_SHIFT : LPDDR3_EN0_SHIFT) |
 214                      disable_bst << (channel ? UPCTL1_BST_DIABLE_SHIFT :
 215                                 UPCTL0_BST_DIABLE_SHIFT) |
 216                      enable_odt << (channel ? UPCTL1_LPDDR3_ODT_EN_SHIFT :
 217                                 UPCTL0_LPDDR3_ODT_EN_SHIFT));
 218 }
 219
 220 static void pctl_cfg(u32 channel, struct rk3288_ddr_pctl *pctl,
 221                      struct rk3288_sdram_params *sdram_params,
 222                      struct rk3288_grf *grf)
 223 {
 224         unsigned int burstlen;
 225
 226         burstlen = (sdram_params->base.noc_timing >> 18) & 0x7;
 227         copy_to_reg(&pctl->togcnt1u, &sdram_params->pctl_timing.togcnt1u,
 228                     sizeof(sdram_params->pctl_timing));
 229         switch (sdram_params->base.dramtype) {
 230         case LPDDR3:
 231                 writel(sdram_params->pctl_timing.tcl - 1,
 232                        &pctl->dfitrddataen);
 233                 writel(sdram_params->pctl_timing.tcwl,
 234                        &pctl->dfitphywrlat);
 235                 burstlen >>= 1;
 236                 writel(LPDDR2_S4 | 0 << MDDR_LPDDR2_CLK_STOP_IDLE_SHIFT |
 237                        LPDDR2_EN | burstlen << BURSTLENGTH_SHIFT |
 238                        (6 - 4) << TFAW_SHIFT | PD_EXIT_FAST |
 239                        1 << PD_TYPE_SHIFT | 0 << PD_IDLE_SHIFT,
 240                        &pctl->mcfg);
 241                 ddr_set_ddr3_mode(grf, channel, false);
 242                 ddr_set_enable(grf, channel, true);
 243                 ddr_set_en_bst_odt(grf, channel, true, false,
 244                                    sdram_params->base.odt);
 245                 break;
 246         case DDR3:
 247                 if (sdram_params->phy_timing.mr[1] & DDR3_DLL_DISABLE) {
 248                         writel(sdram_params->pctl_timing.tcl - 3,
 249                                &pctl->dfitrddataen);
 250                 } else {
 251                         writel(sdram_params->pctl_timing.tcl - 2,
 252                                &pctl->dfitrddataen);
 253                 }
 254                 writel(sdram_params->pctl_timing.tcwl - 1,
 255                        &pctl->dfitphywrlat);
 256                 writel(0 << MDDR_LPDDR2_CLK_STOP_IDLE_SHIFT | DDR3_EN |
 257                        DDR2_DDR3_BL_8 | (6 - 4) << TFAW_SHIFT | PD_EXIT_SLOW |
 258                        1 << PD_TYPE_SHIFT | 0 << PD_IDLE_SHIFT,
 259                        &pctl->mcfg);
 260                 ddr_set_ddr3_mode(grf, channel, true);
 261                 ddr_set_enable(grf, channel, true);
 262
 263                 ddr_set_en_bst_odt(grf, channel, false, true, false);
 264                 break;
 265         }
 266
 267         setbits_le32(&pctl->scfg, 1);
 268 }
 269
 270 static void phy_cfg(const struct chan_info *chan, u32 channel,
 271                     struct rk3288_sdram_params *sdram_params)
 272 {
 273         struct rk3288_ddr_publ *publ = chan->publ;
 274         struct rk3288_msch *msch = chan->msch;
 275         uint ddr_freq_mhz = sdram_params->base.ddr_freq / 1000000;
 276         u32 dinit2, tmp;
 277         int i;
 278
 279         dinit2 = DIV_ROUND_UP(ddr_freq_mhz * 200000, 1000);
 280         /* DDR PHY Timing */
 281         copy_to_reg(&publ->dtpr[0], &sdram_params->phy_timing.dtpr0,
 282                     sizeof(sdram_params->phy_timing));
 283         writel(sdram_params->base.noc_timing, &msch->ddrtiming);
 284         writel(0x3f, &msch->readlatency);
 285         writel(sdram_params->base.noc_activate, &msch->activate);
 286         writel(2 << BUSWRTORD_SHIFT | 2 << BUSRDTOWR_SHIFT |
 287                1 << BUSRDTORD_SHIFT, &msch->devtodev);
 288         writel(DIV_ROUND_UP(ddr_freq_mhz * 5120, 1000) << PRT_DLLLOCK_SHIFT |
 289                DIV_ROUND_UP(ddr_freq_mhz * 50, 1000) << PRT_DLLSRST_SHIFT |
 290                8 << PRT_ITMSRST_SHIFT, &publ->ptr[0]);
 291         writel(DIV_ROUND_UP(ddr_freq_mhz * 500000, 1000) << PRT_DINIT0_SHIFT |
 292                DIV_ROUND_UP(ddr_freq_mhz * 400, 1000) << PRT_DINIT1_SHIFT,
 293                &publ->ptr[1]);
 294         writel(min(dinit2, 0x1ffffU) << PRT_DINIT2_SHIFT |
 295                DIV_ROUND_UP(ddr_freq_mhz * 1000, 1000) << PRT_DINIT3_SHIFT,
 296                &publ->ptr[2]);
 297
 298         switch (sdram_params->base.dramtype) {
 299         case LPDDR3:
 300                 clrsetbits_le32(&publ->pgcr, 0x1F,
 301                                 0 << PGCR_DFTLMT_SHIFT |
 302                                 0 << PGCR_DFTCMP_SHIFT |
 303                                 1 << PGCR_DQSCFG_SHIFT |
 304                                 0 << PGCR_ITMDMD_SHIFT);
 305                 /* DDRMODE select LPDDR3 */
 306                 clrsetbits_le32(&publ->dcr, DDRMD_MASK << DDRMD_SHIFT,
 307                                 DDRMD_LPDDR2_LPDDR3 << DDRMD_SHIFT);
 308                 clrsetbits_le32(&publ->dxccr,
 309                                 DQSNRES_MASK << DQSNRES_SHIFT |
 310                                 DQSRES_MASK << DQSRES_SHIFT,
 311                                 4 << DQSRES_SHIFT | 0xc << DQSNRES_SHIFT);
 312                 tmp = readl(&publ->dtpr[1]);
 313                 tmp = ((tmp >> TDQSCKMAX_SHIFT) & TDQSCKMAX_MASK) -
 314                         ((tmp >> TDQSCK_SHIFT) & TDQSCK_MASK);
 315                 clrsetbits_le32(&publ->dsgcr,
 316                                 DQSGE_MASK << DQSGE_SHIFT |
 317                                 DQSGX_MASK << DQSGX_SHIFT,
 318                                 tmp << DQSGE_SHIFT | tmp << DQSGX_SHIFT);
 319                 break;
 320         case DDR3:
 321                 clrbits_le32(&publ->pgcr, 0x1f);
 322                 clrsetbits_le32(&publ->dcr, DDRMD_MASK << DDRMD_SHIFT,
 323                                 DDRMD_DDR3 << DDRMD_SHIFT);
 324                 break;
 325         }
 326         if (sdram_params->base.odt) {
 327                 /*dynamic RTT enable */
 328                 for (i = 0; i < 4; i++)
 329                         setbits_le32(&publ->datx8[i].dxgcr, DQSRTT | DQRTT);
 330         } else {
 331                 /*dynamic RTT disable */
 332                 for (i = 0; i < 4; i++)
 333                         clrbits_le32(&publ->datx8[i].dxgcr, DQSRTT | DQRTT);
 334         }
 335 }
 336
 337 static void phy_init(struct rk3288_ddr_publ *publ)
 338 {
 339         setbits_le32(&publ->pir, PIR_INIT | PIR_DLLSRST
 340                 | PIR_DLLLOCK | PIR_ZCAL | PIR_ITMSRST | PIR_CLRSR);
 341         udelay(1);
 342         while ((readl(&publ->pgsr) &
 343                 (PGSR_IDONE | PGSR_DLDONE | PGSR_ZCDONE)) !=
 344                 (PGSR_IDONE | PGSR_DLDONE | PGSR_ZCDONE))
 345                 ;
 346 }
 347
 348 static void send_command(struct rk3288_ddr_pctl *pctl, u32 rank,
 349                          u32 cmd, u32 arg)
 350 {
 351         writel((START_CMD | (rank << 20) | arg | cmd), &pctl->mcmd);
 352         udelay(1);
 353         while (readl(&pctl->mcmd) & START_CMD)
 354                 ;
 355 }
 356
 357 static inline void send_command_op(struct rk3288_ddr_pctl *pctl,
 358                                    u32 rank, u32 cmd, u32 ma, u32 op)
 359 {
 360         send_command(pctl, rank, cmd, (ma & LPDDR2_MA_MASK) << LPDDR2_MA_SHIFT |
 361                      (op & LPDDR2_OP_MASK) << LPDDR2_OP_SHIFT);
 362 }
 363
 364 static void memory_init(struct rk3288_ddr_publ *publ,
 365                         u32 dramtype)
 366 {
 367         setbits_le32(&publ->pir,
 368                      (PIR_INIT | PIR_DRAMINIT | PIR_LOCKBYP
 369                       | PIR_ZCALBYP | PIR_CLRSR | PIR_ICPC
 370                       | (dramtype == DDR3 ? PIR_DRAMRST : 0)));
 371         udelay(1);
 372         while ((readl(&publ->pgsr) & (PGSR_IDONE | PGSR_DLDONE))
 373                 != (PGSR_IDONE | PGSR_DLDONE))
 374                 ;
 375 }
 376
 377 static void move_to_config_state(struct rk3288_ddr_publ *publ,
 378                                  struct rk3288_ddr_pctl *pctl)
 379 {
 380         unsigned int state;
 381
 382         while (1) {
 383                 state = readl(&pctl->stat) & PCTL_STAT_MSK;
 384
 385                 switch (state) {
 386                 case LOW_POWER:
 387                         writel(WAKEUP_STATE, &pctl->sctl);
 388                         while ((readl(&pctl->stat) & PCTL_STAT_MSK)
 389                                 != ACCESS)
 390                                 ;
 391                         /* wait DLL lock */
 392                         while ((readl(&publ->pgsr) & PGSR_DLDONE)
 393                                 != PGSR_DLDONE)
 394                                 ;
 395                         /* if at low power state,need wakeup first,
 396                          * and then enter the config
 397                          * so here no break.
 398                          */
 399                 case ACCESS:
 400                         /* no break */
 401                 case INIT_MEM:
 402                         writel(CFG_STATE, &pctl->sctl);
 403                         while ((readl(&pctl->stat) & PCTL_STAT_MSK) != CONFIG)
 404                                 ;
 405                         break;
 406                 case CONFIG:
 407                         return;
 408                 default:
 409                         break;
 410                 }
 411         }
 412 }
 413
 414 static void set_bandwidth_ratio(const struct chan_info *chan, u32 channel,
 415                                 u32 n, struct rk3288_grf *grf)
 416 {
 417         struct rk3288_ddr_pctl *pctl = chan->pctl;
 418         struct rk3288_ddr_publ *publ = chan->publ;
 419         struct rk3288_msch *msch = chan->msch;
 420
 421         if (n == 1) {
 422                 setbits_le32(&pctl->ppcfg, 1);
 423                 rk_setreg(&grf->soc_con0, 1 << (8 + channel));
 424                 setbits_le32(&msch->ddrtiming, 1 << 31);
 425                 /* Data Byte disable*/
 426                 clrbits_le32(&publ->datx8[2].dxgcr, 1);
 427                 clrbits_le32(&publ->datx8[3].dxgcr, 1);
 428                 /* disable DLL */
 429                 setbits_le32(&publ->datx8[2].dxdllcr, DXDLLCR_DLLDIS);
 430                 setbits_le32(&publ->datx8[3].dxdllcr, DXDLLCR_DLLDIS);
 431         } else {
 432                 clrbits_le32(&pctl->ppcfg, 1);
 433                 rk_clrreg(&grf->soc_con0, 1 << (8 + channel));
 434                 clrbits_le32(&msch->ddrtiming, 1 << 31);
 435                 /* Data Byte enable*/
 436                 setbits_le32(&publ->datx8[2].dxgcr, 1);
 437                 setbits_le32(&publ->datx8[3].dxgcr, 1);
 438
 439                 /* enable DLL */
 440                 clrbits_le32(&publ->datx8[2].dxdllcr, DXDLLCR_DLLDIS);
 441                 clrbits_le32(&publ->datx8[3].dxdllcr, DXDLLCR_DLLDIS);
 442                 /* reset DLL */
 443                 clrbits_le32(&publ->datx8[2].dxdllcr, DXDLLCR_DLLSRST);
 444                 clrbits_le32(&publ->datx8[3].dxdllcr, DXDLLCR_DLLSRST);
 445                 udelay(10);
 446                 setbits_le32(&publ->datx8[2].dxdllcr, DXDLLCR_DLLSRST);
 447                 setbits_le32(&publ->datx8[3].dxdllcr, DXDLLCR_DLLSRST);
 448         }
 449         setbits_le32(&pctl->dfistcfg0, 1 << 2);
 450 }
 451
 452 static int data_training(const struct chan_info *chan, u32 channel,
 453                          struct rk3288_sdram_params *sdram_params)
 454 {
 455         unsigned int j;
 456         int ret = 0;
 457         u32 rank;
 458         int i;
 459         u32 step[2] = { PIR_QSTRN, PIR_RVTRN };
 460         struct rk3288_ddr_publ *publ = chan->publ;
 461         struct rk3288_ddr_pctl *pctl = chan->pctl;
 462
 463         /* disable auto refresh */
 464         writel(0, &pctl->trefi);
 465
 466         if (sdram_params->base.dramtype != LPDDR3)
 467                 setbits_le32(&publ->pgcr, 1 << PGCR_DQSCFG_SHIFT);
 468         rank = sdram_params->ch[channel].rank | 1;
 469         for (j = 0; j < ARRAY_SIZE(step); j++) {
 470                 /*
 471                  * trigger QSTRN and RVTRN
 472                  * clear DTDONE status
 473                  */
 474                 setbits_le32(&publ->pir, PIR_CLRSR);
 475
 476                 /* trigger DTT */
 477                 setbits_le32(&publ->pir,
 478                              PIR_INIT | step[j] | PIR_LOCKBYP | PIR_ZCALBYP |
 479                              PIR_CLRSR);
 480                 udelay(1);
 481                 /* wait echo byte DTDONE */
 482                 while ((readl(&publ->datx8[0].dxgsr[0]) & rank)
 483                         != rank)
 484                         ;
 485                 while ((readl(&publ->datx8[1].dxgsr[0]) & rank)
 486                         != rank)
 487                         ;
 488                 if (!(readl(&pctl->ppcfg) & 1)) {
 489                         while ((readl(&publ->datx8[2].dxgsr[0])
 490                                 & rank) != rank)
 491                                 ;
 492                         while ((readl(&publ->datx8[3].dxgsr[0])
 493                                 & rank) != rank)
 494                                 ;
 495                 }
 496                 if (readl(&publ->pgsr) &
 497                     (PGSR_DTERR | PGSR_RVERR | PGSR_RVEIRR)) {
 498                         ret = -1;
 499                         break;
 500                 }
 501         }
 502         /* send some auto refresh to complement the lost while DTT */
 503         for (i = 0; i < (rank > 1 ? 8 : 4); i++)
 504                 send_command(pctl, rank, REF_CMD, 0);
 505
 506         if (sdram_params->base.dramtype != LPDDR3)
 507                 clrbits_le32(&publ->pgcr, 1 << PGCR_DQSCFG_SHIFT);
 508
 509         /* resume auto refresh */
 510         writel(sdram_params->pctl_timing.trefi, &pctl->trefi);
 511
 512         return ret;
 513 }
 514
 515 static void move_to_access_state(const struct chan_info *chan)
 516 {
 517         struct rk3288_ddr_publ *publ = chan->publ;
 518         struct rk3288_ddr_pctl *pctl = chan->pctl;
 519         unsigned int state;
 520
 521         while (1) {
 522                 state = readl(&pctl->stat) & PCTL_STAT_MSK;
 523
 524                 switch (state) {
 525                 case LOW_POWER:
 526                         if (((readl(&pctl->stat) >> LP_TRIG_SHIFT) &
 527                                         LP_TRIG_MASK) == 1)
 528                                 return;
 529
 530                         writel(WAKEUP_STATE, &pctl->sctl);
 531                         while ((readl(&pctl->stat) & PCTL_STAT_MSK) != ACCESS)
 532                                 ;
 533                         /* wait DLL lock */
 534                         while ((readl(&publ->pgsr) & PGSR_DLDONE)
 535                                 != PGSR_DLDONE)
 536                                 ;
 537                         break;
 538                 case INIT_MEM:
 539                         writel(CFG_STATE, &pctl->sctl);
 540                         while ((readl(&pctl->stat) & PCTL_STAT_MSK) != CONFIG)
 541                                 ;
 542                 case CONFIG:
 543                         writel(GO_STATE, &pctl->sctl);
 544                         while ((readl(&pctl->stat) & PCTL_STAT_MSK) == CONFIG)
 545                                 ;
 546                         break;
 547                 case ACCESS:
 548                         return;
 549                 default:
 550                         break;
 551                 }
 552         }
 553 }
 554
 555 static void dram_cfg_rbc(const struct chan_info *chan, u32 chnum,
 556                          struct rk3288_sdram_params *sdram_params)
 557 {
 558         struct rk3288_ddr_publ *publ = chan->publ;
 559
 560         if (sdram_params->ch[chnum].bk == 3)
 561                 clrsetbits_le32(&publ->dcr, PDQ_MASK << PDQ_SHIFT,
 562                                 1 << PDQ_SHIFT);
 563         else
 564                 clrbits_le32(&publ->dcr, PDQ_MASK << PDQ_SHIFT);
 565
 566         writel(sdram_params->base.ddrconfig, &chan->msch->ddrconf);
 567 }
 568
 569 static void dram_all_config(const struct dram_info *dram,
 570                             struct rk3288_sdram_params *sdram_params)
 571 {
 572         unsigned int chan;
 573         u32 sys_reg = 0;
 574
 575         sys_reg |= sdram_params->base.dramtype << SYS_REG_DDRTYPE_SHIFT;
 576         sys_reg |= (sdram_params->num_channels - 1) << SYS_REG_NUM_CH_SHIFT;
 577         for (chan = 0; chan < sdram_params->num_channels; chan++) {
 578                 const struct rk3288_sdram_channel *info =
 579                         &sdram_params->ch[chan];
 580
 581                 sys_reg |= info->row_3_4 << SYS_REG_ROW_3_4_SHIFT(chan);
 582                 sys_reg |= 1 << SYS_REG_CHINFO_SHIFT(chan);
 583                 sys_reg |= (info->rank - 1) << SYS_REG_RANK_SHIFT(chan);
 584                 sys_reg |= (info->col - 9) << SYS_REG_COL_SHIFT(chan);
 585                 sys_reg |= info->bk == 3 ? 0 : 1 << SYS_REG_BK_SHIFT(chan);
 586                 sys_reg |= (info->cs0_row - 13) << SYS_REG_CS0_ROW_SHIFT(chan);
 587                 sys_reg |= (info->cs1_row - 13) << SYS_REG_CS1_ROW_SHIFT(chan);
 588                 sys_reg |= (2 >> info->bw) << SYS_REG_BW_SHIFT(chan);
 589                 sys_reg |= (2 >> info->dbw) << SYS_REG_DBW_SHIFT(chan);
 590
 591                 dram_cfg_rbc(&dram->chan[chan], chan, sdram_params);
 592         }
 593         writel(sys_reg, &dram->pmu->sys_reg[2]);
 594         rk_clrsetreg(&dram->sgrf->soc_con2, 0x1f, sdram_params->base.stride);
 595 }
 596 const int ddrconf_table[] = {
 597         /* row      col,bw */
 598         0,
 599         ((1 << 4) | 1),
 600         ((2 << 4) | 1),
 601         ((3 << 4) | 1),
 602         ((4 << 4) | 1),
 603         ((1 << 4) | 2),
 604         ((2 << 4) | 2),
 605         ((3 << 4) | 2),
 606         ((1 << 4) | 0),
 607         ((2 << 4) | 0),
 608         ((3 << 4) | 0),
 609         0,
 610         0,
 611         0,
 612         0,
 613         ((4 << 4) | 2),
 614 };
 615
 616 static int sdram_rank_bw_detect(struct dram_info *dram, int channel,
 617                 struct rk3288_sdram_params *sdram_params)
 618 {
 619         int reg;
 620         int need_trainig = 0;
 621         const struct chan_info *chan = &dram->chan[channel];
 622         struct rk3288_ddr_publ *publ = chan->publ;
 623
 624         if (-1 == data_training(chan, channel, sdram_params)) {
 625                 reg = readl(&publ->datx8[0].dxgsr[0]);
 626                 /* Check the result for rank 0 */
 627                 if ((channel == 0) && (reg & DQS_GATE_TRAINING_ERROR_RANK0)) {
 628                         debug("data training fail!\n");
 629                                 return -EIO;
 630                 } else if ((channel == 1) &&
 631                            (reg & DQS_GATE_TRAINING_ERROR_RANK0)) {
 632                         sdram_params->num_channels = 1;
 633                 }
 634
 635                 /* Check the result for rank 1 */
 636                 if (reg & DQS_GATE_TRAINING_ERROR_RANK1) {
 637                         sdram_params->ch[channel].rank = 1;
 638                         clrsetbits_le32(&publ->pgcr, 0xF << 18,
 639                                         sdram_params->ch[channel].rank << 18);
 640                         need_trainig = 1;
 641                 }
 642                 reg = readl(&publ->datx8[2].dxgsr[0]);
 643                 if (reg & (1 << 4)) {
 644                         sdram_params->ch[channel].bw = 1;
 645                         set_bandwidth_ratio(chan, channel,
 646                                             sdram_params->ch[channel].bw,
 647                                             dram->grf);
 648                         need_trainig = 1;
 649                 }
 650         }
 651         /* Assume the Die bit width are the same with the chip bit width */
 652         sdram_params->ch[channel].dbw = sdram_params->ch[channel].bw;
 653
 654         if (need_trainig &&
 655             (-1 == data_training(chan, channel, sdram_params))) {
 656                 if (sdram_params->base.dramtype == LPDDR3) {
 657                         ddr_phy_ctl_reset(dram->cru, channel, 1);
 658                         udelay(10);
 659                         ddr_phy_ctl_reset(dram->cru, channel, 0);
 660                         udelay(10);
 661                 }
 662                 debug("2nd data training failed!");
 663                 return -EIO;
 664         }
 665
 666         return 0;
 667 }
 668
 669 static int sdram_col_row_detect(struct dram_info *dram, int channel,
 670                 struct rk3288_sdram_params *sdram_params)
 671 {
 672         int row, col;
 673         unsigned int addr;
 674         const struct chan_info *chan = &dram->chan[channel];
 675         struct rk3288_ddr_pctl *pctl = chan->pctl;
 676         struct rk3288_ddr_publ *publ = chan->publ;
 677         int ret = 0;
 678
 679         /* Detect col */
 680         for (col = 11; col >= 9; col--) {
 681                 writel(0, CONFIG_SYS_SDRAM_BASE);
 682                 addr = CONFIG_SYS_SDRAM_BASE +
 683                         (1 << (col + sdram_params->ch[channel].bw - 1));
 684                 writel(TEST_PATTEN, addr);
 685                 if ((readl(addr) == TEST_PATTEN) &&
 686                     (readl(CONFIG_SYS_SDRAM_BASE) == 0))
 687                         break;
 688         }
 689         if (col == 8) {
 690                 printf("Col detect error\n");
 691                 ret = -EINVAL;
 692                 goto out;
 693         } else {
 694                 sdram_params->ch[channel].col = col;
 695         }
 696
 697         move_to_config_state(publ, pctl);
 698         writel(4, &chan->msch->ddrconf);
 699         move_to_access_state(chan);
 700         /* Detect row*/
 701         for (row = 16; row >= 12; row--) {
 702                 writel(0, CONFIG_SYS_SDRAM_BASE);
 703                 addr = CONFIG_SYS_SDRAM_BASE + (1 << (row + 15 - 1));
 704                 writel(TEST_PATTEN, addr);
 705                 if ((readl(addr) == TEST_PATTEN) &&
 706                     (readl(CONFIG_SYS_SDRAM_BASE) == 0))
 707                         break;
 708         }
 709         if (row == 11) {
 710                 printf("Row detect error\n");
 711                 ret = -EINVAL;
 712         } else {
 713                 sdram_params->ch[channel].cs1_row = row;
 714                 sdram_params->ch[channel].row_3_4 = 0;
 715                 debug("chn %d col %d, row %d\n", channel, col, row);
 716                 sdram_params->ch[channel].cs0_row = row;
 717         }
 718
 719 out:
 720         return ret;
 721 }
 722
 723 static int sdram_get_niu_config(struct rk3288_sdram_params *sdram_params)
 724 {
 725         int i, tmp, size, ret = 0;
 726
 727         tmp = sdram_params->ch[0].col - 9;
 728         tmp -= (sdram_params->ch[0].bw == 2) ? 0 : 1;
 729         tmp |= ((sdram_params->ch[0].cs0_row - 12) << 4);
 730         size = sizeof(ddrconf_table)/sizeof(ddrconf_table[0]);
 731         for (i = 0; i < size; i++)
 732                 if (tmp == ddrconf_table[i])
 733                         break;
 734         if (i >= size) {
 735                 printf("niu config not found\n");
 736                 ret = -EINVAL;
 737         } else {
 738                 sdram_params->base.ddrconfig = i;
 739         }
 740
 741         return ret;
 742 }
 743
 744 static int sdram_get_stride(struct rk3288_sdram_params *sdram_params)
 745 {
 746         int stride = -1;
 747         int ret = 0;
 748         long cap = sdram_params->num_channels * (1u <<
 749                         (sdram_params->ch[0].cs0_row +
 750                          sdram_params->ch[0].col +
 751                          (sdram_params->ch[0].rank - 1) +
 752                          sdram_params->ch[0].bw +
 753                          3 - 20));
 754
 755         switch (cap) {
 756         case 512:
 757                 stride = 0;
 758                 break;
 759         case 1024:
 760                 stride = 5;
 761                 break;
 762         case 2048:
 763                 stride = 9;
 764                 break;
 765         case 4096:
 766                 stride = 0xd;
 767                 break;
 768         default:
 769                 stride = -1;
 770                 printf("could not find correct stride, cap error!\n");
 771                 ret = -EINVAL;
 772                 break;
 773         }
 774         sdram_params->base.stride = stride;
 775
 776         return ret;
 777 }
 778
 779 static int sdram_init(struct dram_info *dram,
 780                       struct rk3288_sdram_params *sdram_params)
 781 {
 782         int channel;
 783         int zqcr;
 784         int ret;
 785
 786         debug("%s start\n", __func__);
 787         if ((sdram_params->base.dramtype == DDR3 &&
 788              sdram_params->base.ddr_freq > 800000000) ||
 789             (sdram_params->base.dramtype == LPDDR3 &&
 790              sdram_params->base.ddr_freq > 533000000)) {
 791                 debug("SDRAM frequency is too high!");
 792                 return -E2BIG;
 793         }
 794
 795         debug("ddr clk dpll\n");
 796         ret = clk_set_rate(&dram->ddr_clk, sdram_params->base.ddr_freq);
 797         debug("ret=%d\n", ret);
 798         if (ret) {
 799                 debug("Could not set DDR clock\n");
 800                 return ret;
 801         }
 802
 803         for (channel = 0; channel < 2; channel++) {
 804                 const struct chan_info *chan = &dram->chan[channel];
 805                 struct rk3288_ddr_pctl *pctl = chan->pctl;
 806                 struct rk3288_ddr_publ *publ = chan->publ;
 807
 808                 /* map all the 4GB space to the current channel */
 809                 if (channel)
 810                         rk_clrsetreg(&dram->sgrf->soc_con2, 0x1f, 0x17);
 811                 else
 812                         rk_clrsetreg(&dram->sgrf->soc_con2, 0x1f, 0x1a);
 813                 phy_pctrl_reset(dram->cru, publ, channel);
 814                 phy_dll_bypass_set(publ, sdram_params->base.ddr_freq);
 815
 816                 dfi_cfg(pctl, sdram_params->base.dramtype);
 817
 818                 pctl_cfg(channel, pctl, sdram_params, dram->grf);
 819
 820                 phy_cfg(chan, channel, sdram_params);
 821
 822                 phy_init(publ);
 823
 824                 writel(POWER_UP_START, &pctl->powctl);
 825                 while (!(readl(&pctl->powstat) & POWER_UP_DONE))
 826                         ;
 827
 828                 memory_init(publ, sdram_params->base.dramtype);
 829                 move_to_config_state(publ, pctl);
 830
 831                 if (sdram_params->base.dramtype == LPDDR3) {
 832                         send_command(pctl, 3, DESELECT_CMD, 0);
 833                         udelay(1);
 834                         send_command(pctl, 3, PREA_CMD, 0);
 835                         udelay(1);
 836                         send_command_op(pctl, 3, MRS_CMD, 63, 0xfc);
 837                         udelay(1);
 838                         send_command_op(pctl, 3, MRS_CMD, 1,
 839                                         sdram_params->phy_timing.mr[1]);
 840                         udelay(1);
 841                         send_command_op(pctl, 3, MRS_CMD, 2,
 842                                         sdram_params->phy_timing.mr[2]);
 843                         udelay(1);
 844                         send_command_op(pctl, 3, MRS_CMD, 3,
 845                                         sdram_params->phy_timing.mr[3]);
 846                         udelay(1);
 847                 }
 848
 849                 /* Using 32bit bus width for detect */
 850                 sdram_params->ch[channel].bw = 2;
 851                 set_bandwidth_ratio(chan, channel,
 852                                     sdram_params->ch[channel].bw, dram->grf);
 853                 /*
 854                  * set cs, using n=3 for detect
 855                  * CS0, n=1
 856                  * CS1, n=2
 857                  * CS0 & CS1, n = 3
 858                  */
 859                 sdram_params->ch[channel].rank = 2,
 860                 clrsetbits_le32(&publ->pgcr, 0xF << 18,
 861                                 (sdram_params->ch[channel].rank | 1) << 18);
 862
 863                 /* DS=40ohm,ODT=155ohm */
 864                 zqcr = 1 << ZDEN_SHIFT | 2 << PU_ONDIE_SHIFT |
 865                         2 << PD_ONDIE_SHIFT | 0x19 << PU_OUTPUT_SHIFT |
 866                         0x19 << PD_OUTPUT_SHIFT;
 867                 writel(zqcr, &publ->zq1cr[0]);
 868                 writel(zqcr, &publ->zq0cr[0]);
 869
 870                 if (sdram_params->base.dramtype == LPDDR3) {
 871                         /* LPDDR2/LPDDR3 need to wait DAI complete, max 10us */
 872                         udelay(10);
 873                         send_command_op(pctl,
 874                                         sdram_params->ch[channel].rank | 1,
 875                                         MRS_CMD, 11,
 876                                         sdram_params->base.odt ? 3 : 0);
 877                         if (channel == 0) {
 878                                 writel(0, &pctl->mrrcfg0);
 879                                 send_command_op(pctl, 1, MRR_CMD, 8, 0);
 880                                 /* S8 */
 881                                 if ((readl(&pctl->mrrstat0) & 0x3) != 3) {
 882                                         debug("failed!");
 883                                         return -EREMOTEIO;
 884                                 }
 885                         }
 886                 }
 887
 888                 /* Detect the rank and bit-width with data-training */
 889                 sdram_rank_bw_detect(dram, channel, sdram_params);
 890
 891                 if (sdram_params->base.dramtype == LPDDR3) {
 892                         u32 i;
 893                         writel(0, &pctl->mrrcfg0);
 894                         for (i = 0; i < 17; i++)
 895                                 send_command_op(pctl, 1, MRR_CMD, i, 0);
 896                 }
 897                 writel(15, &chan->msch->ddrconf);
 898                 move_to_access_state(chan);
 899                 /* DDR3 and LPDDR3 are always 8 bank, no need detect */
 900                 sdram_params->ch[channel].bk = 3;
 901                 /* Detect Col and Row number*/
 902                 ret = sdram_col_row_detect(dram, channel, sdram_params);
 903                 if (ret)
 904                         goto error;
 905         }
 906         /* Find NIU DDR configuration */
 907         ret = sdram_get_niu_config(sdram_params);
 908         if (ret)
 909                 goto error;
 910         /* Find stride setting */
 911         ret = sdram_get_stride(sdram_params);
 912         if (ret)
 913                 goto error;
 914
 915         dram_all_config(dram, sdram_params);
 916         debug("%s done\n", __func__);
 917
 918         return 0;
 919 error:
 920         printf("DRAM init failed!\n");
 921         hang();
 922 }
 923 #endif /* CONFIG_SPL_BUILD */
 924
 925 size_t sdram_size_mb(struct rk3288_pmu *pmu)
 926 {
 927         u32 rank, col, bk, cs0_row, cs1_row, bw, row_3_4;
 928         size_t chipsize_mb = 0;
 929         size_t size_mb = 0;
 930         u32 ch;
 931         u32 sys_reg = readl(&pmu->sys_reg[2]);
 932         u32 chans;
 933
 934         chans = 1 + ((sys_reg >> SYS_REG_NUM_CH_SHIFT) & SYS_REG_NUM_CH_MASK);
 935
 936         for (ch = 0; ch < chans; ch++) {
 937                 rank = 1 + (sys_reg >> SYS_REG_RANK_SHIFT(ch) &
 938                         SYS_REG_RANK_MASK);
 939                 col = 9 + (sys_reg >> SYS_REG_COL_SHIFT(ch) & SYS_REG_COL_MASK);
 940                 bk = 3 - ((sys_reg >> SYS_REG_BK_SHIFT(ch)) & SYS_REG_BK_MASK);
 941                 cs0_row = 13 + (sys_reg >> SYS_REG_CS0_ROW_SHIFT(ch) &
 942                                 SYS_REG_CS0_ROW_MASK);
 943                 cs1_row = 13 + (sys_reg >> SYS_REG_CS1_ROW_SHIFT(ch) &
 944                                 SYS_REG_CS1_ROW_MASK);
 945                 bw = (2 >> ((sys_reg >> SYS_REG_BW_SHIFT(ch)) &
 946                         SYS_REG_BW_MASK));
 947                 row_3_4 = sys_reg >> SYS_REG_ROW_3_4_SHIFT(ch) &
 948                         SYS_REG_ROW_3_4_MASK;
 949                 chipsize_mb = (1 << (cs0_row + col + bk + bw - 20));
 950
 951                 if (rank > 1)
 952                         chipsize_mb += chipsize_mb >>
 953                                 (cs0_row - cs1_row);
 954                 if (row_3_4)
 955                         chipsize_mb = chipsize_mb * 3 / 4;
 956                 size_mb += chipsize_mb;
 957         }
 958
 959         /*
 960         * we use the 0x00000000~0xfdffffff space since 0xff000000~0xffffffff
 961         * is SoC register space (i.e. reserved), and 0xfe000000~0xfeffffff is
 962         * inaccessible for some IP controller.
 963         */
 964         size_mb = min(size_mb, 0xfe000000 >> 20);
 965
 966         return size_mb;
 967 }
 968
 969 #ifdef CONFIG_SPL_BUILD
 970 # ifdef CONFIG_ROCKCHIP_FAST_SPL
 971 static int veyron_init(struct dram_info *priv)
 972 {
 973         struct udevice *pmic;
 974         int ret;
 975
 976         ret = uclass_first_device_err(UCLASS_PMIC, &pmic);
 977         if (ret)
 978                 return ret;
 979
 980         /* Slowly raise to max CPU voltage to prevent overshoot */
 981         ret = rk808_spl_configure_buck(pmic, 1, 1200000);
 982         if (ret)
 983                 return ret;
 984         udelay(175);/* Must wait for voltage to stabilize, 2mV/us */
 985         ret = rk808_spl_configure_buck(pmic, 1, 1400000);
 986         if (ret)
 987                 return ret;
 988         udelay(100);/* Must wait for voltage to stabilize, 2mV/us */
 989
 990         rk3288_clk_configure_cpu(priv->cru, priv->grf);
 991
 992         return 0;
 993 }
 994 # endif
 995
 996 static int setup_sdram(struct udevice *dev)
 997 {
 998         struct dram_info *priv = dev_get_priv(dev);
 999         struct rk3288_sdram_params *params = dev_get_platdata(dev);
1000
1001 # ifdef CONFIG_ROCKCHIP_FAST_SPL
1002         if (priv->is_veyron) {
1003                 int ret;
1004
1005                 ret = veyron_init(priv);
1006                 if (ret)
1007                         return ret;
1008         }
1009 # endif
1010
1011         return sdram_init(priv, params);
1012 }
1013
1014 static int rk3288_dmc_ofdata_to_platdata(struct udevice *dev)
1015 {
1016 #if !CONFIG_IS_ENABLED(OF_PLATDATA)
1017         struct rk3288_sdram_params *params = dev_get_platdata(dev);
1018         const void *blob = gd->fdt_blob;
1019         int node = dev_of_offset(dev);
1020         int ret;
1021
1022         /* Rk3288 supports dual-channel, set default channel num to 2 */
1023         params->num_channels = 2;
1024         ret = fdtdec_get_int_array(blob, node, "rockchip,pctl-timing",
1025                                    (u32 *)&params->pctl_timing,
1026                                    sizeof(params->pctl_timing) / sizeof(u32));
1027         if (ret) {
1028                 debug("%s: Cannot read rockchip,pctl-timing\n", __func__);
1029                 return -EINVAL;
1030         }
1031         ret = fdtdec_get_int_array(blob, node, "rockchip,phy-timing",
1032                                    (u32 *)&params->phy_timing,
1033                                    sizeof(params->phy_timing) / sizeof(u32));
1034         if (ret) {
1035                 debug("%s: Cannot read rockchip,phy-timing\n", __func__);
1036                 return -EINVAL;
1037         }
1038         ret = fdtdec_get_int_array(blob, node, "rockchip,sdram-params",
1039                                    (u32 *)&params->base,
1040                                    sizeof(params->base) / sizeof(u32));
1041         if (ret) {
1042                 debug("%s: Cannot read rockchip,sdram-params\n", __func__);
1043                 return -EINVAL;
1044         }
1045 #ifdef CONFIG_ROCKCHIP_FAST_SPL
1046         struct dram_info *priv = dev_get_priv(dev);
1047
1048         priv->is_veyron = !fdt_node_check_compatible(blob, 0, "google,veyron");
1049 #endif
1050         ret = regmap_init_mem(dev, &params->map);
1051         if (ret)
1052                 return ret;
1053 #endif
1054
1055         return 0;
1056 }
1057 #endif /* CONFIG_SPL_BUILD */
1058
1059 #if CONFIG_IS_ENABLED(OF_PLATDATA)
1060 static int conv_of_platdata(struct udevice *dev)
1061 {
1062         struct rk3288_sdram_params *plat = dev_get_platdata(dev);
1063         struct dtd_rockchip_rk3288_dmc *of_plat = &plat->of_plat;
1064         int ret;
1065
1066         memcpy(&plat->pctl_timing, of_plat->rockchip_pctl_timing,
1067                sizeof(plat->pctl_timing));
1068         memcpy(&plat->phy_timing, of_plat->rockchip_phy_timing,
1069                sizeof(plat->phy_timing));
1070         memcpy(&plat->base, of_plat->rockchip_sdram_params, sizeof(plat->base));
1071         /* Rk3288 supports dual-channel, set default channel num to 2 */
1072         plat->num_channels = 2;
1073         ret = regmap_init_mem_platdata(dev, of_plat->reg,
1074                                        ARRAY_SIZE(of_plat->reg) / 2,
1075                                        &plat->map);
1076         if (ret)
1077                 return ret;
1078
1079         return 0;
1080 }
1081 #endif
1082
1083 static int rk3288_dmc_probe(struct udevice *dev)
1084 {
1085 #ifdef CONFIG_SPL_BUILD
1086         struct rk3288_sdram_params *plat = dev_get_platdata(dev);
1087 #endif
1088         struct dram_info *priv = dev_get_priv(dev);
1089         struct regmap *map;
1090         int ret;
1091         struct udevice *dev_clk;
1092
1093 #if CONFIG_IS_ENABLED(OF_PLATDATA)
1094         ret = conv_of_platdata(dev);
1095         if (ret)
1096                 return ret;
1097 #endif
1098         map = syscon_get_regmap_by_driver_data(ROCKCHIP_SYSCON_NOC);
1099         if (IS_ERR(map))
1100                 return PTR_ERR(map);
1101         priv->chan[0].msch = regmap_get_range(map, 0);
1102         priv->chan[1].msch = (struct rk3288_msch *)
1103                         (regmap_get_range(map, 0) + 0x80);
1104
1105         priv->grf = syscon_get_first_range(ROCKCHIP_SYSCON_GRF);
1106         priv->sgrf = syscon_get_first_range(ROCKCHIP_SYSCON_SGRF);
1107         priv->pmu = syscon_get_first_range(ROCKCHIP_SYSCON_PMU);
1108
1109 #ifdef CONFIG_SPL_BUILD
1110         priv->chan[0].pctl = regmap_get_range(plat->map, 0);
1111         priv->chan[0].publ = regmap_get_range(plat->map, 1);
1112         priv->chan[1].pctl = regmap_get_range(plat->map, 2);
1113         priv->chan[1].publ = regmap_get_range(plat->map, 3);
1114 #endif
1115         ret = rockchip_get_clk(&dev_clk);
1116         if (ret)
1117                 return ret;
1118         priv->ddr_clk.id = CLK_DDR;
1119         ret = clk_request(dev_clk, &priv->ddr_clk);
1120         if (ret)
1121                 return ret;
1122
1123         priv->cru = rockchip_get_cru();
1124         if (IS_ERR(priv->cru))
1125                 return PTR_ERR(priv->cru);
1126 #ifdef CONFIG_SPL_BUILD
1127         ret = setup_sdram(dev);
1128         if (ret)
1129                 return ret;
1130 #endif
1131         priv->info.base = 0;
1132         priv->info.size = sdram_size_mb(priv->pmu) << 20;
1133
1134         return 0;
1135 }
1136
1137 static int rk3288_dmc_get_info(struct udevice *dev, struct ram_info *info)
1138 {
1139         struct dram_info *priv = dev_get_priv(dev);
1140
1141         *info = priv->info;
1142
1143         return 0;
1144 }
1145
1146 static struct ram_ops rk3288_dmc_ops = {
1147         .get_info = rk3288_dmc_get_info,
1148 };
1149
1150 static const struct udevice_id rk3288_dmc_ids[] = {
1151         { .compatible = "rockchip,rk3288-dmc" },
1152         { }
1153 };
1154
1155 U_BOOT_DRIVER(dmc_rk3288) = {
1156         .name = "rockchip_rk3288_dmc",
1157         .id = UCLASS_RAM,
1158         .of_match = rk3288_dmc_ids,
1159         .ops = &rk3288_dmc_ops,
1160 #ifdef CONFIG_SPL_BUILD
1161         .ofdata_to_platdata = rk3288_dmc_ofdata_to_platdata,
1162 #endif
1163         .probe = rk3288_dmc_probe,
1164         .priv_auto_alloc_size = sizeof(struct dram_info),
1165 #ifdef CONFIG_SPL_BUILD
1166         .platdata_auto_alloc_size = sizeof(struct rk3288_sdram_params),
1167 #endif
1168 };