1 // SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause 2 /* 3 * (C) Copyright 2017 Rockchip Electronics Co., Ltd 4 */ 5 #include <common.h> 6 #include <clk.h> 7 #include <dm.h> 8 #include <dt-structs.h> 9 #include <errno.h> 10 #include <ram.h> 11 #include <regmap.h> 12 #include <syscon.h> 13 #include <asm/io.h> 14 #include <asm/arch/clock.h> 15 #include <asm/arch/cru_rk322x.h> 16 #include <asm/arch/grf_rk322x.h> 17 #include <asm/arch/hardware.h> 18 #include <asm/arch/sdram_rk322x.h> 19 #include <asm/arch/timer.h> 20 #include <asm/arch/uart.h> 21 #include <asm/arch/sdram_common.h> 22 #include <asm/types.h> 23 #include <linux/err.h> 24 25 DECLARE_GLOBAL_DATA_PTR; 26 struct chan_info { 27 struct rk322x_ddr_pctl *pctl; 28 struct rk322x_ddr_phy *phy; 29 struct rk322x_service_sys *msch; 30 }; 31 32 struct dram_info { 33 struct chan_info chan[1]; 34 struct ram_info info; 35 struct clk ddr_clk; 36 struct rk322x_cru *cru; 37 struct rk322x_grf *grf; 38 }; 39 40 struct rk322x_sdram_params { 41 #if CONFIG_IS_ENABLED(OF_PLATDATA) 42 struct dtd_rockchip_rk3228_dmc of_plat; 43 #endif 44 struct rk322x_sdram_channel ch[1]; 45 struct rk322x_pctl_timing pctl_timing; 46 struct rk322x_phy_timing phy_timing; 47 struct rk322x_base_params base; 48 int num_channels; 49 struct regmap *map; 50 }; 51 52 #ifdef CONFIG_SPL_BUILD 53 /* 54 * [7:6] bank(n:n bit bank) 55 * [5:4] row(13+n) 56 * [3] cs(0:1 cs, 1:2 cs) 57 * [2:1] bank(n:n bit bank) 58 * [0] col(10+n) 59 */ 60 const char ddr_cfg_2_rbc[] = { 61 ((0 << 6) | (0 << 4) | (0 << 3) | (1 << 2) | 1), 62 ((0 << 6) | (1 << 4) | (0 << 3) | (1 << 2) | 1), 63 ((0 << 6) | (2 << 4) | (0 << 3) | (1 << 2) | 1), 64 ((0 << 6) | (3 << 4) | (0 << 3) | (1 << 2) | 1), 65 ((0 << 6) | (1 << 4) | (0 << 3) | (1 << 2) | 2), 66 ((0 << 6) | (2 << 4) | (0 << 3) | (1 << 2) | 2), 67 ((0 << 6) | (3 << 4) | (0 << 3) | (1 << 2) | 2), 68 ((0 << 6) | (0 << 4) | (0 << 3) | (1 << 2) | 0), 69 ((0 << 6) | (1 << 4) | (0 << 3) | (1 << 2) | 0), 70 ((0 << 6) | (2 << 4) | (0 << 3) | (1 << 2) | 0), 71 ((0 << 6) | (3 << 4) | (0 << 3) | (1 << 2) | 0), 72 ((0 << 6) | (2 << 4) | (0 << 3) | (0 << 2) | 1), 73 ((1 << 6) | (1 << 4) | (0 << 3) | (0 << 2) | 2), 74 ((1 << 6) | (1 << 4) | (0 << 3) | (0 << 2) | 1), 75 ((0 << 6) | (3 << 4) | (1 << 3) | (1 << 2) | 1), 76 ((0 << 6) | (3 << 4) | (1 << 3) | (1 << 2) | 0), 77 }; 78 79 static void copy_to_reg(u32 *dest, const u32 *src, u32 n) 80 { 81 int i; 82 83 for (i = 0; i < n / sizeof(u32); i++) { 84 writel(*src, dest); 85 src++; 86 dest++; 87 } 88 } 89 90 void phy_pctrl_reset(struct rk322x_cru *cru, 91 struct rk322x_ddr_phy *ddr_phy) 92 { 93 rk_clrsetreg(&cru->cru_softrst_con[5], 1 << DDRCTRL_PSRST_SHIFT | 94 1 << DDRCTRL_SRST_SHIFT | 1 << DDRPHY_PSRST_SHIFT | 95 1 << DDRPHY_SRST_SHIFT, 96 1 << DDRCTRL_PSRST_SHIFT | 1 << DDRCTRL_SRST_SHIFT | 97 1 << DDRPHY_PSRST_SHIFT | 1 << DDRPHY_SRST_SHIFT); 98 99 rockchip_udelay(10); 100 101 rk_clrreg(&cru->cru_softrst_con[5], 1 << DDRPHY_PSRST_SHIFT | 102 1 << DDRPHY_SRST_SHIFT); 103 rockchip_udelay(10); 104 105 rk_clrreg(&cru->cru_softrst_con[5], 1 << DDRCTRL_PSRST_SHIFT | 106 1 << DDRCTRL_SRST_SHIFT); 107 rockchip_udelay(10); 108 109 clrbits_le32(&ddr_phy->ddrphy_reg[0], 110 SOFT_RESET_MASK << SOFT_RESET_SHIFT); 111 rockchip_udelay(10); 112 setbits_le32(&ddr_phy->ddrphy_reg[0], 113 SOFT_DERESET_ANALOG); 114 rockchip_udelay(5); 115 setbits_le32(&ddr_phy->ddrphy_reg[0], 116 SOFT_DERESET_DIGITAL); 117 118 rockchip_udelay(1); 119 } 120 121 void phy_dll_bypass_set(struct rk322x_ddr_phy *ddr_phy, u32 freq) 122 { 123 u32 tmp; 124 125 setbits_le32(&ddr_phy->ddrphy_reg[0x13], 0x10); 126 setbits_le32(&ddr_phy->ddrphy_reg[0x26], 0x10); 127 setbits_le32(&ddr_phy->ddrphy_reg[0x36], 0x10); 128 setbits_le32(&ddr_phy->ddrphy_reg[0x46], 0x10); 129 setbits_le32(&ddr_phy->ddrphy_reg[0x56], 0x10); 130 131 clrbits_le32(&ddr_phy->ddrphy_reg[0x14], 0x8); 132 clrbits_le32(&ddr_phy->ddrphy_reg[0x27], 0x8); 133 clrbits_le32(&ddr_phy->ddrphy_reg[0x37], 0x8); 134 clrbits_le32(&ddr_phy->ddrphy_reg[0x47], 0x8); 135 clrbits_le32(&ddr_phy->ddrphy_reg[0x57], 0x8); 136 137 if (freq <= 400) 138 setbits_le32(&ddr_phy->ddrphy_reg[0xa4], 0x1f); 139 else 140 clrbits_le32(&ddr_phy->ddrphy_reg[0xa4], 0x1f); 141 142 if (freq <= 680) 143 tmp = 3; 144 else 145 tmp = 2; 146 147 writel(tmp, &ddr_phy->ddrphy_reg[0x28]); 148 writel(tmp, &ddr_phy->ddrphy_reg[0x38]); 149 writel(tmp, &ddr_phy->ddrphy_reg[0x48]); 150 writel(tmp, &ddr_phy->ddrphy_reg[0x58]); 151 } 152 153 static void send_command(struct rk322x_ddr_pctl *pctl, 154 u32 rank, u32 cmd, u32 arg) 155 { 156 writel((START_CMD | (rank << 20) | arg | cmd), &pctl->mcmd); 157 rockchip_udelay(1); 158 while (readl(&pctl->mcmd) & START_CMD) 159 ; 160 } 161 162 static void memory_init(struct chan_info *chan, 163 struct rk322x_sdram_params *sdram_params) 164 { 165 struct rk322x_ddr_pctl *pctl = chan->pctl; 166 u32 dramtype = sdram_params->base.dramtype; 167 168 if (dramtype == DDR3) { 169 send_command(pctl, 3, DESELECT_CMD, 0); 170 rockchip_udelay(1); 171 send_command(pctl, 3, PREA_CMD, 0); 172 send_command(pctl, 3, MRS_CMD, 173 (0x02 & BANK_ADDR_MASK) << BANK_ADDR_SHIFT | 174 (sdram_params->phy_timing.mr[2] & CMD_ADDR_MASK) << 175 CMD_ADDR_SHIFT); 176 177 send_command(pctl, 3, MRS_CMD, 178 (0x03 & BANK_ADDR_MASK) << BANK_ADDR_SHIFT | 179 (sdram_params->phy_timing.mr[3] & CMD_ADDR_MASK) << 180 CMD_ADDR_SHIFT); 181 182 send_command(pctl, 3, MRS_CMD, 183 (0x01 & BANK_ADDR_MASK) << BANK_ADDR_SHIFT | 184 (sdram_params->phy_timing.mr[1] & CMD_ADDR_MASK) << 185 CMD_ADDR_SHIFT); 186 187 send_command(pctl, 3, MRS_CMD, 188 (0x00 & BANK_ADDR_MASK) << BANK_ADDR_SHIFT | 189 ((sdram_params->phy_timing.mr[0] | 190 DDR3_DLL_RESET) & 191 CMD_ADDR_MASK) << CMD_ADDR_SHIFT); 192 193 send_command(pctl, 3, ZQCL_CMD, 0); 194 } else { 195 send_command(pctl, 3, MRS_CMD, 196 (0x63 & LPDDR23_MA_MASK) << LPDDR23_MA_SHIFT | 197 (0 & LPDDR23_OP_MASK) << 198 LPDDR23_OP_SHIFT); 199 rockchip_udelay(10); 200 send_command(pctl, 3, MRS_CMD, 201 (0x10 & LPDDR23_MA_MASK) << LPDDR23_MA_SHIFT | 202 (0xff & LPDDR23_OP_MASK) << 203 LPDDR23_OP_SHIFT); 204 rockchip_udelay(1); 205 send_command(pctl, 3, MRS_CMD, 206 (0x10 & LPDDR23_MA_MASK) << LPDDR23_MA_SHIFT | 207 (0xff & LPDDR23_OP_MASK) << 208 LPDDR23_OP_SHIFT); 209 rockchip_udelay(1); 210 send_command(pctl, 3, MRS_CMD, 211 (1 & LPDDR23_MA_MASK) << LPDDR23_MA_SHIFT | 212 (sdram_params->phy_timing.mr[1] & 213 LPDDR23_OP_MASK) << LPDDR23_OP_SHIFT); 214 send_command(pctl, 3, MRS_CMD, 215 (2 & LPDDR23_MA_MASK) << LPDDR23_MA_SHIFT | 216 (sdram_params->phy_timing.mr[2] & 217 LPDDR23_OP_MASK) << LPDDR23_OP_SHIFT); 218 send_command(pctl, 3, MRS_CMD, 219 (3 & LPDDR23_MA_MASK) << LPDDR23_MA_SHIFT | 220 (sdram_params->phy_timing.mr[3] & 221 LPDDR23_OP_MASK) << LPDDR23_OP_SHIFT); 222 if (dramtype == LPDDR3) 223 send_command(pctl, 3, MRS_CMD, (11 & LPDDR23_MA_MASK) << 224 LPDDR23_MA_SHIFT | 225 (sdram_params->phy_timing.mr11 & 226 LPDDR23_OP_MASK) << LPDDR23_OP_SHIFT); 227 } 228 } 229 230 static u32 data_training(struct chan_info *chan) 231 { 232 struct rk322x_ddr_phy *ddr_phy = chan->phy; 233 struct rk322x_ddr_pctl *pctl = chan->pctl; 234 u32 value; 235 u32 bw = (readl(&ddr_phy->ddrphy_reg[0]) >> 4) & 0xf; 236 u32 ret; 237 238 /* disable auto refresh */ 239 value = readl(&pctl->trefi) | (1 << 31); 240 writel(1 << 31, &pctl->trefi); 241 242 clrsetbits_le32(&ddr_phy->ddrphy_reg[2], 0x30, 243 DQS_SQU_CAL_SEL_CS0); 244 setbits_le32(&ddr_phy->ddrphy_reg[2], DQS_SQU_CAL_START); 245 246 rockchip_udelay(30); 247 ret = readl(&ddr_phy->ddrphy_reg[0xff]); 248 249 clrbits_le32(&ddr_phy->ddrphy_reg[2], 250 DQS_SQU_CAL_START); 251 252 /* 253 * since data training will take about 20us, so send some auto 254 * refresh(about 7.8us) to complement the lost time 255 */ 256 send_command(pctl, 3, PREA_CMD, 0); 257 send_command(pctl, 3, REF_CMD, 0); 258 259 writel(value, &pctl->trefi); 260 261 if (ret & 0x10) { 262 ret = -1; 263 } else { 264 ret = (ret & 0xf) ^ bw; 265 ret = (ret == 0) ? 0 : -1; 266 } 267 return ret; 268 } 269 270 static void move_to_config_state(struct rk322x_ddr_pctl *pctl) 271 { 272 unsigned int state; 273 274 while (1) { 275 state = readl(&pctl->stat) & PCTL_STAT_MASK; 276 switch (state) { 277 case LOW_POWER: 278 writel(WAKEUP_STATE, &pctl->sctl); 279 while ((readl(&pctl->stat) & PCTL_STAT_MASK) 280 != ACCESS) 281 ; 282 /* 283 * If at low power state, need wakeup first, and then 284 * enter the config, so fallthrough 285 */ 286 case ACCESS: 287 /* fallthrough */ 288 case INIT_MEM: 289 writel(CFG_STATE, &pctl->sctl); 290 while ((readl(&pctl->stat) & PCTL_STAT_MASK) != CONFIG) 291 ; 292 break; 293 case CONFIG: 294 return; 295 default: 296 break; 297 } 298 } 299 } 300 301 static void move_to_access_state(struct rk322x_ddr_pctl *pctl) 302 { 303 unsigned int state; 304 305 while (1) { 306 state = readl(&pctl->stat) & PCTL_STAT_MASK; 307 switch (state) { 308 case LOW_POWER: 309 writel(WAKEUP_STATE, &pctl->sctl); 310 while ((readl(&pctl->stat) & PCTL_STAT_MASK) != ACCESS) 311 ; 312 break; 313 case INIT_MEM: 314 writel(CFG_STATE, &pctl->sctl); 315 while ((readl(&pctl->stat) & PCTL_STAT_MASK) != CONFIG) 316 ; 317 /* fallthrough */ 318 case CONFIG: 319 writel(GO_STATE, &pctl->sctl); 320 while ((readl(&pctl->stat) & PCTL_STAT_MASK) != ACCESS) 321 ; 322 break; 323 case ACCESS: 324 return; 325 default: 326 break; 327 } 328 } 329 } 330 331 static void move_to_lowpower_state(struct rk322x_ddr_pctl *pctl) 332 { 333 unsigned int state; 334 335 while (1) { 336 state = readl(&pctl->stat) & PCTL_STAT_MASK; 337 switch (state) { 338 case INIT_MEM: 339 writel(CFG_STATE, &pctl->sctl); 340 while ((readl(&pctl->stat) & PCTL_STAT_MASK) != CONFIG) 341 ; 342 /* fallthrough */ 343 case CONFIG: 344 writel(GO_STATE, &pctl->sctl); 345 while ((readl(&pctl->stat) & PCTL_STAT_MASK) != ACCESS) 346 ; 347 break; 348 case ACCESS: 349 writel(SLEEP_STATE, &pctl->sctl); 350 while ((readl(&pctl->stat) & PCTL_STAT_MASK) != 351 LOW_POWER) 352 ; 353 break; 354 case LOW_POWER: 355 return; 356 default: 357 break; 358 } 359 } 360 } 361 362 /* pctl should in low power mode when call this function */ 363 static void phy_softreset(struct dram_info *dram) 364 { 365 struct rk322x_ddr_phy *ddr_phy = dram->chan[0].phy; 366 struct rk322x_grf *grf = dram->grf; 367 368 writel(GRF_DDRPHY_BUFFEREN_CORE_EN, &grf->soc_con[0]); 369 clrbits_le32(&ddr_phy->ddrphy_reg[0], 0x3 << 2); 370 rockchip_udelay(1); 371 setbits_le32(&ddr_phy->ddrphy_reg[0], 1 << 2); 372 rockchip_udelay(5); 373 setbits_le32(&ddr_phy->ddrphy_reg[0], 1 << 3); 374 writel(GRF_DDRPHY_BUFFEREN_CORE_DIS, &grf->soc_con[0]); 375 } 376 377 /* bw: 2: 32bit, 1:16bit */ 378 static void set_bw(struct dram_info *dram, u32 bw) 379 { 380 struct rk322x_ddr_pctl *pctl = dram->chan[0].pctl; 381 struct rk322x_ddr_phy *ddr_phy = dram->chan[0].phy; 382 struct rk322x_grf *grf = dram->grf; 383 384 if (bw == 1) { 385 setbits_le32(&pctl->ppcfg, 1); 386 clrbits_le32(&ddr_phy->ddrphy_reg[0], 0xc << 4); 387 writel(GRF_MSCH_NOC_16BIT_EN, &grf->soc_con[0]); 388 clrbits_le32(&ddr_phy->ddrphy_reg[0x46], 0x8); 389 clrbits_le32(&ddr_phy->ddrphy_reg[0x56], 0x8); 390 } else { 391 clrbits_le32(&pctl->ppcfg, 1); 392 setbits_le32(&ddr_phy->ddrphy_reg[0], 0xf << 4); 393 writel(GRF_DDR_32BIT_EN | GRF_MSCH_NOC_32BIT_EN, 394 &grf->soc_con[0]); 395 setbits_le32(&ddr_phy->ddrphy_reg[0x46], 0x8); 396 setbits_le32(&ddr_phy->ddrphy_reg[0x56], 0x8); 397 } 398 } 399 400 static void pctl_cfg(struct rk322x_ddr_pctl *pctl, 401 struct rk322x_sdram_params *sdram_params, 402 struct rk322x_grf *grf) 403 { 404 u32 burst_len; 405 u32 bw; 406 u32 dramtype = sdram_params->base.dramtype; 407 408 if (sdram_params->ch[0].bw == 2) 409 bw = GRF_DDR_32BIT_EN | GRF_MSCH_NOC_32BIT_EN; 410 else 411 bw = GRF_MSCH_NOC_16BIT_EN; 412 413 writel(DFI_INIT_START | DFI_DATA_BYTE_DISABLE_EN, &pctl->dfistcfg0); 414 writel(DFI_DRAM_CLK_SR_EN | DFI_DRAM_CLK_DPD_EN, &pctl->dfistcfg1); 415 writel(DFI_PARITY_INTR_EN | DFI_PARITY_EN, &pctl->dfistcfg2); 416 writel(0x51010, &pctl->dfilpcfg0); 417 418 writel(1, &pctl->dfitphyupdtype0); 419 writel(0x0d, &pctl->dfitphyrdlat); 420 writel(0, &pctl->dfitphywrdata); 421 422 writel(0, &pctl->dfiupdcfg); 423 copy_to_reg(&pctl->togcnt1u, &sdram_params->pctl_timing.togcnt1u, 424 sizeof(struct rk322x_pctl_timing)); 425 if (dramtype == DDR3) { 426 writel((1 << 3) | (1 << 11), 427 &pctl->dfiodtcfg); 428 writel(7 << 16, &pctl->dfiodtcfg1); 429 writel((readl(&pctl->tcl) - 1) / 2 - 1, &pctl->dfitrddataen); 430 writel((readl(&pctl->tcwl) - 1) / 2 - 1, &pctl->dfitphywrlat); 431 writel(500, &pctl->trsth); 432 writel(0 << MDDR_LPDDR2_CLK_STOP_IDLE_SHIFT | DDR3_EN | 433 DDR2_DDR3_BL_8 | (6 - 4) << TFAW_SHIFT | PD_EXIT_SLOW | 434 1 << PD_TYPE_SHIFT | 0 << PD_IDLE_SHIFT, 435 &pctl->mcfg); 436 writel(bw | GRF_DDR3_EN, &grf->soc_con[0]); 437 } else { 438 if (sdram_params->phy_timing.bl & PHT_BL_8) 439 burst_len = MDDR_LPDDR2_BL_8; 440 else 441 burst_len = MDDR_LPDDR2_BL_4; 442 443 writel(readl(&pctl->tcl) / 2 - 1, &pctl->dfitrddataen); 444 writel(readl(&pctl->tcwl) / 2 - 1, &pctl->dfitphywrlat); 445 writel(0, &pctl->trsth); 446 if (dramtype == LPDDR2) { 447 writel(0 << MDDR_LPDDR2_CLK_STOP_IDLE_SHIFT | 448 LPDDR2_S4 | LPDDR2_EN | burst_len | 449 (6 - 4) << TFAW_SHIFT | PD_EXIT_FAST | 450 1 << PD_TYPE_SHIFT | 0 << PD_IDLE_SHIFT, 451 &pctl->mcfg); 452 writel(0, &pctl->dfiodtcfg); 453 writel(0, &pctl->dfiodtcfg1); 454 } else { 455 writel(0 << MDDR_LPDDR2_CLK_STOP_IDLE_SHIFT | 456 LPDDR2_S4 | LPDDR3_EN | burst_len | 457 (6 - 4) << TFAW_SHIFT | PD_EXIT_FAST | 458 1 << PD_TYPE_SHIFT | 0 << PD_IDLE_SHIFT, 459 &pctl->mcfg); 460 writel((1 << 3) | (1 << 2), &pctl->dfiodtcfg); 461 writel((7 << 16) | 4, &pctl->dfiodtcfg1); 462 } 463 writel(bw | GRF_LPDDR2_3_EN, &grf->soc_con[0]); 464 } 465 setbits_le32(&pctl->scfg, 1); 466 } 467 468 static void phy_cfg(struct chan_info *chan, 469 struct rk322x_sdram_params *sdram_params) 470 { 471 struct rk322x_ddr_phy *ddr_phy = chan->phy; 472 struct rk322x_service_sys *axi_bus = chan->msch; 473 struct rk322x_msch_timings *noc_timing = &sdram_params->base.noc_timing; 474 struct rk322x_phy_timing *phy_timing = &sdram_params->phy_timing; 475 struct rk322x_pctl_timing *pctl_timing = &sdram_params->pctl_timing; 476 u32 cmd_drv, clk_drv, dqs_drv, dqs_odt; 477 478 writel(noc_timing->ddrtiming, &axi_bus->ddrtiming); 479 writel(noc_timing->ddrmode, &axi_bus->ddrmode); 480 writel(noc_timing->readlatency, &axi_bus->readlatency); 481 writel(noc_timing->activate, &axi_bus->activate); 482 writel(noc_timing->devtodev, &axi_bus->devtodev); 483 484 switch (sdram_params->base.dramtype) { 485 case DDR3: 486 writel(PHY_DDR3 | phy_timing->bl, &ddr_phy->ddrphy_reg[1]); 487 break; 488 case LPDDR2: 489 writel(PHY_LPDDR2 | phy_timing->bl, &ddr_phy->ddrphy_reg[1]); 490 break; 491 default: 492 writel(PHY_LPDDR2 | phy_timing->bl, &ddr_phy->ddrphy_reg[1]); 493 break; 494 } 495 496 writel(phy_timing->cl_al, &ddr_phy->ddrphy_reg[0xb]); 497 writel(pctl_timing->tcwl, &ddr_phy->ddrphy_reg[0xc]); 498 499 cmd_drv = PHY_RON_RTT_34OHM; 500 clk_drv = PHY_RON_RTT_45OHM; 501 dqs_drv = PHY_RON_RTT_34OHM; 502 if (sdram_params->base.dramtype == LPDDR2) 503 dqs_odt = PHY_RON_RTT_DISABLE; 504 else 505 dqs_odt = PHY_RON_RTT_225OHM; 506 507 writel(cmd_drv, &ddr_phy->ddrphy_reg[0x11]); 508 clrsetbits_le32(&ddr_phy->ddrphy_reg[0x12], (0x1f << 3), cmd_drv << 3); 509 writel(clk_drv, &ddr_phy->ddrphy_reg[0x16]); 510 writel(clk_drv, &ddr_phy->ddrphy_reg[0x18]); 511 512 writel(dqs_drv, &ddr_phy->ddrphy_reg[0x20]); 513 writel(dqs_drv, &ddr_phy->ddrphy_reg[0x2f]); 514 writel(dqs_drv, &ddr_phy->ddrphy_reg[0x30]); 515 writel(dqs_drv, &ddr_phy->ddrphy_reg[0x3f]); 516 writel(dqs_drv, &ddr_phy->ddrphy_reg[0x40]); 517 writel(dqs_drv, &ddr_phy->ddrphy_reg[0x4f]); 518 writel(dqs_drv, &ddr_phy->ddrphy_reg[0x50]); 519 writel(dqs_drv, &ddr_phy->ddrphy_reg[0x5f]); 520 521 writel(dqs_odt, &ddr_phy->ddrphy_reg[0x21]); 522 writel(dqs_odt, &ddr_phy->ddrphy_reg[0x2e]); 523 writel(dqs_odt, &ddr_phy->ddrphy_reg[0x31]); 524 writel(dqs_odt, &ddr_phy->ddrphy_reg[0x3e]); 525 writel(dqs_odt, &ddr_phy->ddrphy_reg[0x41]); 526 writel(dqs_odt, &ddr_phy->ddrphy_reg[0x4e]); 527 writel(dqs_odt, &ddr_phy->ddrphy_reg[0x51]); 528 writel(dqs_odt, &ddr_phy->ddrphy_reg[0x5e]); 529 } 530 531 void dram_cfg_rbc(struct chan_info *chan, 532 struct rk322x_sdram_params *sdram_params) 533 { 534 char noc_config; 535 int i = 0; 536 struct rk322x_sdram_channel *config = &sdram_params->ch[0]; 537 struct rk322x_service_sys *axi_bus = chan->msch; 538 539 move_to_config_state(chan->pctl); 540 541 if ((config->rank == 2) && (config->cs1_row == config->cs0_row)) { 542 if ((config->col + config->bw) == 12) { 543 i = 14; 544 goto finish; 545 } else if ((config->col + config->bw) == 11) { 546 i = 15; 547 goto finish; 548 } 549 } 550 noc_config = ((config->cs0_row - 13) << 4) | ((config->bk - 2) << 2) | 551 (config->col + config->bw - 11); 552 for (i = 0; i < 11; i++) { 553 if (noc_config == ddr_cfg_2_rbc[i]) 554 break; 555 } 556 557 if (i < 11) 558 goto finish; 559 560 noc_config = ((config->bk - 2) << 6) | ((config->cs0_row - 13) << 4) | 561 (config->col + config->bw - 11); 562 563 for (i = 11; i < 14; i++) { 564 if (noc_config == ddr_cfg_2_rbc[i]) 565 break; 566 } 567 if (i < 14) 568 goto finish; 569 else 570 i = 0; 571 572 finish: 573 writel(i, &axi_bus->ddrconf); 574 move_to_access_state(chan->pctl); 575 } 576 577 static void dram_all_config(const struct dram_info *dram, 578 struct rk322x_sdram_params *sdram_params) 579 { 580 struct rk322x_sdram_channel *info = &sdram_params->ch[0]; 581 u32 sys_reg = 0; 582 583 sys_reg |= sdram_params->base.dramtype << SYS_REG_DDRTYPE_SHIFT; 584 sys_reg |= (1 - 1) << SYS_REG_NUM_CH_SHIFT; 585 sys_reg |= info->row_3_4 << SYS_REG_ROW_3_4_SHIFT(0); 586 sys_reg |= 1 << SYS_REG_CHINFO_SHIFT(0); 587 sys_reg |= (info->rank - 1) << SYS_REG_RANK_SHIFT(0); 588 sys_reg |= (info->col - 9) << SYS_REG_COL_SHIFT(0); 589 sys_reg |= info->bk == 3 ? 0 : 1 << SYS_REG_BK_SHIFT(0); 590 sys_reg |= (info->cs0_row - 13) << SYS_REG_CS0_ROW_SHIFT(0); 591 sys_reg |= (info->cs1_row - 13) << SYS_REG_CS1_ROW_SHIFT(0); 592 sys_reg |= (2 >> info->bw) << SYS_REG_BW_SHIFT(0); 593 sys_reg |= (2 >> info->dbw) << SYS_REG_DBW_SHIFT(0); 594 595 writel(sys_reg, &dram->grf->os_reg[2]); 596 } 597 598 #define TEST_PATTEN 0x5aa5f00f 599 600 static int dram_cap_detect(struct dram_info *dram, 601 struct rk322x_sdram_params *sdram_params) 602 { 603 u32 bw, row, col, addr; 604 u32 ret = 0; 605 struct rk322x_service_sys *axi_bus = dram->chan[0].msch; 606 607 if (sdram_params->base.dramtype == DDR3) 608 sdram_params->ch[0].dbw = 1; 609 else 610 sdram_params->ch[0].dbw = 2; 611 612 move_to_config_state(dram->chan[0].pctl); 613 /* bw detect */ 614 set_bw(dram, 2); 615 if (data_training(&dram->chan[0]) == 0) { 616 bw = 2; 617 } else { 618 bw = 1; 619 set_bw(dram, 1); 620 move_to_lowpower_state(dram->chan[0].pctl); 621 phy_softreset(dram); 622 move_to_config_state(dram->chan[0].pctl); 623 if (data_training(&dram->chan[0])) { 624 printf("BW detect error\n"); 625 ret = -EINVAL; 626 } 627 } 628 sdram_params->ch[0].bw = bw; 629 sdram_params->ch[0].bk = 3; 630 631 if (bw == 2) 632 writel(6, &axi_bus->ddrconf); 633 else 634 writel(3, &axi_bus->ddrconf); 635 move_to_access_state(dram->chan[0].pctl); 636 for (col = 11; col >= 9; col--) { 637 writel(0, CONFIG_SYS_SDRAM_BASE); 638 addr = CONFIG_SYS_SDRAM_BASE + 639 (1 << (col + bw - 1)); 640 writel(TEST_PATTEN, addr); 641 if ((readl(addr) == TEST_PATTEN) && 642 (readl(CONFIG_SYS_SDRAM_BASE) == 0)) 643 break; 644 } 645 if (col == 8) { 646 printf("Col detect error\n"); 647 ret = -EINVAL; 648 goto out; 649 } else { 650 sdram_params->ch[0].col = col; 651 } 652 653 writel(10, &axi_bus->ddrconf); 654 655 /* Detect row*/ 656 for (row = 16; row >= 12; row--) { 657 writel(0, CONFIG_SYS_SDRAM_BASE); 658 addr = CONFIG_SYS_SDRAM_BASE + (1u << (row + 11 + 3 - 1)); 659 writel(TEST_PATTEN, addr); 660 if ((readl(addr) == TEST_PATTEN) && 661 (readl(CONFIG_SYS_SDRAM_BASE) == 0)) 662 break; 663 } 664 if (row == 11) { 665 printf("Row detect error\n"); 666 ret = -EINVAL; 667 } else { 668 sdram_params->ch[0].cs1_row = row; 669 sdram_params->ch[0].row_3_4 = 0; 670 sdram_params->ch[0].cs0_row = row; 671 } 672 /* cs detect */ 673 writel(0, CONFIG_SYS_SDRAM_BASE); 674 writel(TEST_PATTEN, CONFIG_SYS_SDRAM_BASE + (1u << 30)); 675 writel(~TEST_PATTEN, CONFIG_SYS_SDRAM_BASE + (1u << 30) + 4); 676 if ((readl(CONFIG_SYS_SDRAM_BASE + (1u << 30)) == TEST_PATTEN) && 677 (readl(CONFIG_SYS_SDRAM_BASE) == 0)) 678 sdram_params->ch[0].rank = 2; 679 else 680 sdram_params->ch[0].rank = 1; 681 out: 682 return ret; 683 } 684 685 static int sdram_init(struct dram_info *dram, 686 struct rk322x_sdram_params *sdram_params) 687 { 688 int ret; 689 690 ret = clk_set_rate(&dram->ddr_clk, 691 sdram_params->base.ddr_freq * MHz * 2); 692 if (ret < 0) { 693 printf("Could not set DDR clock\n"); 694 return ret; 695 } 696 697 phy_pctrl_reset(dram->cru, dram->chan[0].phy); 698 phy_dll_bypass_set(dram->chan[0].phy, sdram_params->base.ddr_freq); 699 pctl_cfg(dram->chan[0].pctl, sdram_params, dram->grf); 700 phy_cfg(&dram->chan[0], sdram_params); 701 writel(POWER_UP_START, &dram->chan[0].pctl->powctl); 702 while (!(readl(&dram->chan[0].pctl->powstat) & POWER_UP_DONE)) 703 ; 704 memory_init(&dram->chan[0], sdram_params); 705 move_to_access_state(dram->chan[0].pctl); 706 ret = dram_cap_detect(dram, sdram_params); 707 if (ret) 708 goto out; 709 dram_cfg_rbc(&dram->chan[0], sdram_params); 710 dram_all_config(dram, sdram_params); 711 out: 712 return ret; 713 } 714 715 static int rk322x_dmc_ofdata_to_platdata(struct udevice *dev) 716 { 717 #if !CONFIG_IS_ENABLED(OF_PLATDATA) 718 struct rk322x_sdram_params *params = dev_get_platdata(dev); 719 const void *blob = gd->fdt_blob; 720 int node = dev_of_offset(dev); 721 int ret; 722 723 params->num_channels = 1; 724 725 ret = fdtdec_get_int_array(blob, node, "rockchip,pctl-timing", 726 (u32 *)¶ms->pctl_timing, 727 sizeof(params->pctl_timing) / sizeof(u32)); 728 if (ret) { 729 printf("%s: Cannot read rockchip,pctl-timing\n", __func__); 730 return -EINVAL; 731 } 732 ret = fdtdec_get_int_array(blob, node, "rockchip,phy-timing", 733 (u32 *)¶ms->phy_timing, 734 sizeof(params->phy_timing) / sizeof(u32)); 735 if (ret) { 736 printf("%s: Cannot read rockchip,phy-timing\n", __func__); 737 return -EINVAL; 738 } 739 ret = fdtdec_get_int_array(blob, node, "rockchip,sdram-params", 740 (u32 *)¶ms->base, 741 sizeof(params->base) / sizeof(u32)); 742 if (ret) { 743 printf("%s: Cannot read rockchip,sdram-params\n", __func__); 744 return -EINVAL; 745 } 746 ret = regmap_init_mem(dev_ofnode(dev), ¶ms->map); 747 if (ret) 748 return ret; 749 #endif 750 751 return 0; 752 } 753 #endif /* CONFIG_SPL_BUILD */ 754 755 #if CONFIG_IS_ENABLED(OF_PLATDATA) 756 static int conv_of_platdata(struct udevice *dev) 757 { 758 struct rk322x_sdram_params *plat = dev_get_platdata(dev); 759 struct dtd_rockchip_rk322x_dmc *of_plat = &plat->of_plat; 760 int ret; 761 762 memcpy(&plat->pctl_timing, of_plat->rockchip_pctl_timing, 763 sizeof(plat->pctl_timing)); 764 memcpy(&plat->phy_timing, of_plat->rockchip_phy_timing, 765 sizeof(plat->phy_timing)); 766 memcpy(&plat->base, of_plat->rockchip_sdram_params, sizeof(plat->base)); 767 768 plat->num_channels = 1; 769 ret = regmap_init_mem_platdata(dev, of_plat->reg, 770 ARRAY_SIZE(of_plat->reg) / 2, 771 &plat->map); 772 if (ret) 773 return ret; 774 775 return 0; 776 } 777 #endif 778 779 static int rk322x_dmc_probe(struct udevice *dev) 780 { 781 #ifdef CONFIG_SPL_BUILD 782 struct rk322x_sdram_params *plat = dev_get_platdata(dev); 783 int ret; 784 struct udevice *dev_clk; 785 #endif 786 struct dram_info *priv = dev_get_priv(dev); 787 788 priv->grf = syscon_get_first_range(ROCKCHIP_SYSCON_GRF); 789 #ifdef CONFIG_SPL_BUILD 790 #if CONFIG_IS_ENABLED(OF_PLATDATA) 791 ret = conv_of_platdata(dev); 792 if (ret) 793 return ret; 794 #endif 795 796 priv->chan[0].msch = syscon_get_first_range(ROCKCHIP_SYSCON_MSCH); 797 priv->chan[0].pctl = regmap_get_range(plat->map, 0); 798 priv->chan[0].phy = regmap_get_range(plat->map, 1); 799 ret = rockchip_get_clk(&dev_clk); 800 if (ret) 801 return ret; 802 priv->ddr_clk.id = CLK_DDR; 803 ret = clk_request(dev_clk, &priv->ddr_clk); 804 if (ret) 805 return ret; 806 807 priv->cru = rockchip_get_cru(); 808 if (IS_ERR(priv->cru)) 809 return PTR_ERR(priv->cru); 810 ret = sdram_init(priv, plat); 811 if (ret) 812 return ret; 813 #else 814 priv->info.base = CONFIG_SYS_SDRAM_BASE; 815 priv->info.size = rockchip_sdram_size( 816 (phys_addr_t)&priv->grf->os_reg[2]); 817 #endif 818 819 return 0; 820 } 821 822 static int rk322x_dmc_get_info(struct udevice *dev, struct ram_info *info) 823 { 824 struct dram_info *priv = dev_get_priv(dev); 825 826 *info = priv->info; 827 828 return 0; 829 } 830 831 static struct ram_ops rk322x_dmc_ops = { 832 .get_info = rk322x_dmc_get_info, 833 }; 834 835 static const struct udevice_id rk322x_dmc_ids[] = { 836 { .compatible = "rockchip,rk3228-dmc" }, 837 { } 838 }; 839 840 U_BOOT_DRIVER(dmc_rk322x) = { 841 .name = "rockchip_rk322x_dmc", 842 .id = UCLASS_RAM, 843 .of_match = rk322x_dmc_ids, 844 .ops = &rk322x_dmc_ops, 845 #ifdef CONFIG_SPL_BUILD 846 .ofdata_to_platdata = rk322x_dmc_ofdata_to_platdata, 847 #endif 848 .probe = rk322x_dmc_probe, 849 .priv_auto_alloc_size = sizeof(struct dram_info), 850 #ifdef CONFIG_SPL_BUILD 851 .platdata_auto_alloc_size = sizeof(struct rk322x_sdram_params), 852 #endif 853 }; 854 855