1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Copyright (C) Marvell International Ltd. and its affiliates 4 */ 5 6 #include <common.h> 7 #include <i2c.h> 8 #include <spl.h> 9 #include <asm/io.h> 10 #include <asm/arch/cpu.h> 11 #include <asm/arch/soc.h> 12 13 #include "ddr3_hw_training.h" 14 15 /* 16 * Debug 17 */ 18 #define DEBUG_WL_C(s, d, l) \ 19 DEBUG_WL_S(s); DEBUG_WL_D(d, l); DEBUG_WL_S("\n") 20 #define DEBUG_WL_FULL_C(s, d, l) \ 21 DEBUG_WL_FULL_S(s); DEBUG_WL_FULL_D(d, l); DEBUG_WL_FULL_S("\n") 22 23 #ifdef MV_DEBUG_WL 24 #define DEBUG_WL_S(s) puts(s) 25 #define DEBUG_WL_D(d, l) printf("%x", d) 26 #define DEBUG_RL_S(s) \ 27 debug_cond(ddr3_get_log_level() >= MV_LOG_LEVEL_2, "%s", s) 28 #define DEBUG_RL_D(d, l) \ 29 debug_cond(ddr3_get_log_level() >= MV_LOG_LEVEL_2, "%x", d) 30 #else 31 #define DEBUG_WL_S(s) 32 #define DEBUG_WL_D(d, l) 33 #endif 34 35 #ifdef MV_DEBUG_WL_FULL 36 #define DEBUG_WL_FULL_S(s) puts(s) 37 #define DEBUG_WL_FULL_D(d, l) printf("%x", d) 38 #else 39 #define DEBUG_WL_FULL_S(s) 40 #define DEBUG_WL_FULL_D(d, l) 41 #endif 42 43 #define WL_SUP_EXPECTED_DATA 0x21 44 #define WL_SUP_READ_DRAM_ENTRY 0x8 45 46 static int ddr3_write_leveling_single_cs(u32 cs, u32 freq, int ratio_2to1, 47 u32 *result, 48 MV_DRAM_INFO *dram_info); 49 static void ddr3_write_ctrl_pup_reg(int bc_acc, u32 pup, u32 reg_addr, 50 u32 data); 51 52 extern u16 odt_static[ODT_OPT][MAX_CS]; 53 extern u16 odt_dynamic[ODT_OPT][MAX_CS]; 54 extern u32 wl_sup_pattern[LEN_WL_SUP_PATTERN]; 55 56 /* 57 * Name: ddr3_write_leveling_hw 58 * Desc: Execute Write leveling phase by HW 59 * Args: freq - current sequence frequency 60 * dram_info - main struct 61 * Notes: 62 * Returns: MV_OK if success, MV_FAIL if fail. 63 */ 64 int ddr3_write_leveling_hw(u32 freq, MV_DRAM_INFO *dram_info) 65 { 66 u32 reg, phase, delay, cs, pup; 67 #ifdef MV88F67XX 68 int dpde_flag = 0; 69 #endif 70 /* Debug message - Start Read leveling procedure */ 71 DEBUG_WL_S("DDR3 - Write Leveling - Starting HW WL procedure\n"); 72 73 #ifdef MV88F67XX 74 /* Dynamic pad issue (BTS669) during WL */ 75 reg = reg_read(REG_DUNIT_CTRL_LOW_ADDR); 76 if (reg & (1 << REG_DUNIT_CTRL_LOW_DPDE_OFFS)) { 77 dpde_flag = 1; 78 reg_write(REG_DUNIT_CTRL_LOW_ADDR, 79 reg & ~(1 << REG_DUNIT_CTRL_LOW_DPDE_OFFS)); 80 } 81 #endif 82 83 reg = 1 << REG_DRAM_TRAINING_WL_OFFS; 84 /* Config the retest number */ 85 reg |= (COUNT_HW_WL << REG_DRAM_TRAINING_RETEST_OFFS); 86 reg |= (dram_info->cs_ena << (REG_DRAM_TRAINING_CS_OFFS)); 87 reg_write(REG_DRAM_TRAINING_ADDR, reg); /* 0x15B0 - Training Register */ 88 89 reg = reg_read(REG_DRAM_TRAINING_SHADOW_ADDR) | 90 (1 << REG_DRAM_TRAINING_AUTO_OFFS); 91 reg_write(REG_DRAM_TRAINING_SHADOW_ADDR, reg); 92 93 /* Wait */ 94 do { 95 reg = reg_read(REG_DRAM_TRAINING_SHADOW_ADDR) & 96 (1 << REG_DRAM_TRAINING_AUTO_OFFS); 97 } while (reg); /* Wait for '0' */ 98 99 reg = reg_read(REG_DRAM_TRAINING_ADDR); 100 /* Check if Successful */ 101 if (reg & (1 << REG_DRAM_TRAINING_ERROR_OFFS)) { 102 /* 103 * Read results to arrays - Results are required for WL 104 * High freq Supplement and DQS Centralization 105 */ 106 for (cs = 0; cs < MAX_CS; cs++) { 107 if (dram_info->cs_ena & (1 << cs)) { 108 for (pup = 0; 109 pup < dram_info->num_of_total_pups; 110 pup++) { 111 if (pup == dram_info->num_of_std_pups 112 && dram_info->ecc_ena) 113 pup = ECC_PUP; 114 reg = 115 ddr3_read_pup_reg(PUP_WL_MODE, cs, 116 pup); 117 phase = 118 (reg >> REG_PHY_PHASE_OFFS) & 119 PUP_PHASE_MASK; 120 delay = reg & PUP_DELAY_MASK; 121 dram_info->wl_val[cs][pup][P] = phase; 122 dram_info->wl_val[cs][pup][D] = delay; 123 dram_info->wl_val[cs][pup][S] = 124 WL_HI_FREQ_STATE - 1; 125 reg = 126 ddr3_read_pup_reg(PUP_WL_MODE + 0x1, 127 cs, pup); 128 dram_info->wl_val[cs][pup][DQS] = 129 (reg & 0x3F); 130 } 131 132 #ifdef MV_DEBUG_WL 133 /* Debug message - Print res for cs[i]: cs,PUP,Phase,Delay */ 134 DEBUG_WL_S("DDR3 - Write Leveling - Write Leveling Cs - "); 135 DEBUG_WL_D((u32) cs, 1); 136 DEBUG_WL_S(" Results:\n"); 137 for (pup = 0; 138 pup < dram_info->num_of_total_pups; 139 pup++) { 140 if (pup == dram_info->num_of_std_pups 141 && dram_info->ecc_ena) 142 pup = ECC_PUP; 143 DEBUG_WL_S("DDR3 - Write Leveling - PUP: "); 144 DEBUG_WL_D((u32) pup, 1); 145 DEBUG_WL_S(", Phase: "); 146 DEBUG_WL_D((u32) 147 dram_info->wl_val[cs][pup] 148 [P], 1); 149 DEBUG_WL_S(", Delay: "); 150 DEBUG_WL_D((u32) 151 dram_info->wl_val[cs][pup] 152 [D], 2); 153 DEBUG_WL_S("\n"); 154 } 155 #endif 156 } 157 } 158 159 /* Dynamic pad issue (BTS669) during WL */ 160 #ifdef MV88F67XX 161 if (dpde_flag) { 162 reg = reg_read(REG_DUNIT_CTRL_LOW_ADDR) | 163 (1 << REG_DUNIT_CTRL_LOW_DPDE_OFFS); 164 reg_write(REG_DUNIT_CTRL_LOW_ADDR, reg); 165 } 166 #endif 167 168 DEBUG_WL_S("DDR3 - Write Leveling - HW WL Ended Successfully\n"); 169 170 return MV_OK; 171 } else { 172 DEBUG_WL_S("DDR3 - Write Leveling - HW WL Error\n"); 173 return MV_FAIL; 174 } 175 } 176 177 /* 178 * Name: ddr3_wl_supplement 179 * Desc: Write Leveling Supplement 180 * Args: dram_info - main struct 181 * Notes: 182 * Returns: MV_OK if success, MV_FAIL if fail. 183 */ 184 int ddr3_wl_supplement(MV_DRAM_INFO *dram_info) 185 { 186 u32 cs, cnt, pup_num, sum, phase, delay, max_pup_num, pup, sdram_offset; 187 u32 tmp_count, ecc, reg; 188 u32 ddr_width, tmp_pup, idx; 189 u32 sdram_pup_val, uj; 190 u32 one_clk_err = 0, align_err = 0, no_err = 0, err = 0, err_n = 0; 191 u32 sdram_data[LEN_WL_SUP_PATTERN] __aligned(32) = { 0 }; 192 193 ddr_width = dram_info->ddr_width; 194 no_err = 0; 195 196 DEBUG_WL_S("DDR3 - Write Leveling Hi-Freq Supplement - Starting\n"); 197 198 switch (ddr_width) { 199 /* Data error from pos-adge to pos-adge */ 200 case 16: 201 one_clk_err = 4; 202 align_err = 4; 203 break; 204 case 32: 205 one_clk_err = 8; 206 align_err = 8; 207 break; 208 case 64: 209 one_clk_err = 0x10; 210 align_err = 0x10; 211 break; 212 default: 213 DEBUG_WL_S("Error - bus width!!!\n"); 214 return MV_FAIL; 215 } 216 217 /* Enable SW override */ 218 reg = reg_read(REG_DRAM_TRAINING_2_ADDR) | 219 (1 << REG_DRAM_TRAINING_2_SW_OVRD_OFFS); 220 221 /* [0] = 1 - Enable SW override */ 222 /* 0x15B8 - Training SW 2 Register */ 223 reg_write(REG_DRAM_TRAINING_2_ADDR, reg); 224 DEBUG_WL_S("DDR3 - Write Leveling Hi-Freq Supplement - SW Override Enabled\n"); 225 reg = (1 << REG_DRAM_TRAINING_AUTO_OFFS); 226 reg_write(REG_DRAM_TRAINING_ADDR, reg); /* 0x15B0 - Training Register */ 227 tmp_count = 0; 228 for (cs = 0; cs < MAX_CS; cs++) { 229 if (dram_info->cs_ena & (1 << cs)) { 230 sum = 0; 231 /* 232 * 2 iterations loop: 1)actual WL results 2) fix WL 233 * if needed 234 */ 235 for (cnt = 0; cnt < COUNT_WL_HI_FREQ; cnt++) { 236 DEBUG_WL_C("COUNT = ", cnt, 1); 237 for (ecc = 0; ecc < (dram_info->ecc_ena + 1); 238 ecc++) { 239 if (ecc) { 240 DEBUG_WL_S("ECC PUP:\n"); 241 } else { 242 DEBUG_WL_S("DATA PUP:\n"); 243 } 244 245 max_pup_num = 246 dram_info->num_of_std_pups * (1 - 247 ecc) + 248 ecc; 249 /* ECC Support - Switch ECC Mux on ecc=1 */ 250 reg = 251 (reg_read(REG_DRAM_TRAINING_2_ADDR) 252 & ~(1 << 253 REG_DRAM_TRAINING_2_ECC_MUX_OFFS)); 254 reg |= 255 (dram_info->ecc_ena * 256 ecc << 257 REG_DRAM_TRAINING_2_ECC_MUX_OFFS); 258 reg_write(REG_DRAM_TRAINING_2_ADDR, 259 reg); 260 ddr3_reset_phy_read_fifo(); 261 262 /* Write to memory */ 263 sdram_offset = 264 tmp_count * (SDRAM_CS_SIZE + 1) + 265 0x200; 266 if (MV_OK != ddr3_dram_sram_burst((u32) 267 wl_sup_pattern, 268 sdram_offset, 269 LEN_WL_SUP_PATTERN)) 270 return MV_FAIL; 271 272 /* Read from memory */ 273 if (MV_OK != 274 ddr3_dram_sram_burst(sdram_offset, 275 (u32) 276 sdram_data, 277 LEN_WL_SUP_PATTERN)) 278 return MV_FAIL; 279 280 /* Print the buffer */ 281 for (uj = 0; uj < LEN_WL_SUP_PATTERN; 282 uj++) { 283 if ((uj % 4 == 0) && (uj != 0)) { 284 DEBUG_WL_S("\n"); 285 } 286 DEBUG_WL_D(sdram_data[uj], 287 8); 288 DEBUG_WL_S(" "); 289 } 290 291 /* Check pup which DQS/DATA is error */ 292 for (pup = 0; pup < max_pup_num; pup++) { 293 /* ECC support - bit 8 */ 294 pup_num = (ecc) ? ECC_PUP : pup; 295 if (pup < 4) { /* lower 32 bit */ 296 tmp_pup = pup; 297 idx = 298 WL_SUP_READ_DRAM_ENTRY; 299 } else { /* higher 32 bit */ 300 tmp_pup = pup - 4; 301 idx = 302 WL_SUP_READ_DRAM_ENTRY 303 + 1; 304 } 305 DEBUG_WL_S("\nCS: "); 306 DEBUG_WL_D((u32) cs, 1); 307 DEBUG_WL_S(" PUP: "); 308 DEBUG_WL_D((u32) pup_num, 1); 309 DEBUG_WL_S("\n"); 310 sdram_pup_val = 311 ((sdram_data[idx] >> 312 ((tmp_pup) * 8)) & 0xFF); 313 DEBUG_WL_C("Actual Data = ", 314 sdram_pup_val, 2); 315 DEBUG_WL_C("Expected Data = ", 316 (WL_SUP_EXPECTED_DATA 317 + pup), 2); 318 /* 319 * ALINGHMENT: calculate 320 * expected data vs actual data 321 */ 322 err = 323 (WL_SUP_EXPECTED_DATA + 324 pup) - sdram_pup_val; 325 /* 326 * CLOCK LONG: calculate 327 * expected data vs actual data 328 */ 329 err_n = 330 sdram_pup_val - 331 (WL_SUP_EXPECTED_DATA + 332 pup); 333 DEBUG_WL_C("err = ", err, 2); 334 DEBUG_WL_C("err_n = ", err_n, 335 2); 336 if (err == no_err) { 337 /* PUP is correct - increment State */ 338 dram_info->wl_val[cs] 339 [pup_num] 340 [S] = 1; 341 } else if (err_n == one_clk_err) { 342 /* clock is longer than DQS */ 343 phase = 344 ((dram_info->wl_val 345 [cs] 346 [pup_num][P] + 347 WL_HI_FREQ_SHIFT) 348 % MAX_PHASE_2TO1); 349 dram_info->wl_val[cs] 350 [pup_num] 351 [P] = phase; 352 delay = 353 dram_info->wl_val 354 [cs][pup_num] 355 [D]; 356 DEBUG_WL_S("#### Clock is longer than DQS more than one clk cycle ####\n"); 357 ddr3_write_pup_reg 358 (PUP_WL_MODE, cs, 359 pup * (1 - ecc) + 360 ECC_PUP * ecc, 361 phase, delay); 362 } else if (err == align_err) { 363 /* clock is align to DQS */ 364 phase = 365 dram_info->wl_val 366 [cs][pup_num] 367 [P]; 368 delay = 369 dram_info->wl_val 370 [cs][pup_num] 371 [D]; 372 DEBUG_WL_S("#### Alignment PUPS problem ####\n"); 373 if ((phase == 0) 374 || ((phase == 1) 375 && (delay <= 376 0x10))) { 377 DEBUG_WL_S("#### Warning - Possible Layout Violation (DQS is longer than CLK)####\n"); 378 } 379 380 phase = 0x0; 381 delay = 0x0; 382 dram_info->wl_val[cs] 383 [pup_num] 384 [P] = phase; 385 dram_info->wl_val[cs] 386 [pup_num] 387 [D] = delay; 388 ddr3_write_pup_reg 389 (PUP_WL_MODE, cs, 390 pup * (1 - ecc) + 391 ECC_PUP * ecc, 392 phase, delay); 393 } 394 /* Stop condition for ECC phase */ 395 pup = (ecc) ? max_pup_num : pup; 396 } 397 398 /* ECC Support - Disable ECC MUX */ 399 reg = 400 (reg_read(REG_DRAM_TRAINING_2_ADDR) 401 & ~(1 << 402 REG_DRAM_TRAINING_2_ECC_MUX_OFFS)); 403 reg_write(REG_DRAM_TRAINING_2_ADDR, 404 reg); 405 } 406 } 407 408 for (pup = 0; pup < dram_info->num_of_std_pups; pup++) 409 sum += dram_info->wl_val[cs][pup][S]; 410 411 if (dram_info->ecc_ena) 412 sum += dram_info->wl_val[cs][ECC_PUP][S]; 413 414 /* Checks if any pup is not locked after the change */ 415 if (sum < (WL_HI_FREQ_STATE * (dram_info->num_of_total_pups))) { 416 DEBUG_WL_C("DDR3 - Write Leveling Hi-Freq Supplement - didn't work for Cs - ", 417 (u32) cs, 1); 418 return MV_FAIL; 419 } 420 tmp_count++; 421 } 422 } 423 424 dram_info->wl_max_phase = 0; 425 dram_info->wl_min_phase = 10; 426 427 /* 428 * Read results to arrays - Results are required for DQS Centralization 429 */ 430 for (cs = 0; cs < MAX_CS; cs++) { 431 if (dram_info->cs_ena & (1 << cs)) { 432 for (pup = 0; pup < dram_info->num_of_total_pups; pup++) { 433 if (pup == dram_info->num_of_std_pups 434 && dram_info->ecc_ena) 435 pup = ECC_PUP; 436 reg = ddr3_read_pup_reg(PUP_WL_MODE, cs, pup); 437 phase = 438 (reg >> REG_PHY_PHASE_OFFS) & 439 PUP_PHASE_MASK; 440 if (phase > dram_info->wl_max_phase) 441 dram_info->wl_max_phase = phase; 442 if (phase < dram_info->wl_min_phase) 443 dram_info->wl_min_phase = phase; 444 } 445 } 446 } 447 448 /* Disable SW override - Must be in a different stage */ 449 /* [0]=0 - Enable SW override */ 450 reg = reg_read(REG_DRAM_TRAINING_2_ADDR); 451 reg &= ~(1 << REG_DRAM_TRAINING_2_SW_OVRD_OFFS); 452 /* 0x15B8 - Training SW 2 Register */ 453 reg_write(REG_DRAM_TRAINING_2_ADDR, reg); 454 455 reg = reg_read(REG_DRAM_TRAINING_1_ADDR) | 456 (1 << REG_DRAM_TRAINING_1_TRNBPOINT_OFFS); 457 reg_write(REG_DRAM_TRAINING_1_ADDR, reg); 458 459 DEBUG_WL_S("DDR3 - Write Leveling Hi-Freq Supplement - Ended Successfully\n"); 460 461 return MV_OK; 462 } 463 464 /* 465 * Name: ddr3_write_leveling_hw_reg_dimm 466 * Desc: Execute Write leveling phase by HW 467 * Args: freq - current sequence frequency 468 * dram_info - main struct 469 * Notes: 470 * Returns: MV_OK if success, MV_FAIL if fail. 471 */ 472 int ddr3_write_leveling_hw_reg_dimm(u32 freq, MV_DRAM_INFO *dram_info) 473 { 474 u32 reg, phase, delay, cs, pup, pup_num; 475 __maybe_unused int dpde_flag = 0; 476 477 /* Debug message - Start Read leveling procedure */ 478 DEBUG_WL_S("DDR3 - Write Leveling - Starting HW WL procedure\n"); 479 480 if (dram_info->num_cs > 2) { 481 DEBUG_WL_S("DDR3 - Write Leveling - HW WL Ended Successfully\n"); 482 return MV_NO_CHANGE; 483 } 484 485 /* If target freq = 400 move clock start point */ 486 /* Write to control PUP to Control Deskew Regs */ 487 if (freq <= DDR_400) { 488 for (pup = 0; pup <= dram_info->num_of_total_pups; pup++) { 489 /* PUP_DELAY_MASK 0x1F */ 490 /* reg = 0x0C10001F + (uj << 16); */ 491 ddr3_write_ctrl_pup_reg(1, pup, CNTRL_PUP_DESKEW + pup, 492 0x1F); 493 } 494 } 495 496 #ifdef MV88F67XX 497 /* Dynamic pad issue (BTS669) during WL */ 498 reg = reg_read(REG_DUNIT_CTRL_LOW_ADDR); 499 if (reg & (1 << REG_DUNIT_CTRL_LOW_DPDE_OFFS)) { 500 dpde_flag = 1; 501 reg_write(REG_DUNIT_CTRL_LOW_ADDR, 502 reg & ~(1 << REG_DUNIT_CTRL_LOW_DPDE_OFFS)); 503 } 504 #endif 505 506 reg = (1 << REG_DRAM_TRAINING_WL_OFFS); 507 /* Config the retest number */ 508 reg |= (COUNT_HW_WL << REG_DRAM_TRAINING_RETEST_OFFS); 509 reg |= (dram_info->cs_ena << (REG_DRAM_TRAINING_CS_OFFS)); 510 reg_write(REG_DRAM_TRAINING_ADDR, reg); /* 0x15B0 - Training Register */ 511 512 reg = reg_read(REG_DRAM_TRAINING_SHADOW_ADDR) | 513 (1 << REG_DRAM_TRAINING_AUTO_OFFS); 514 reg_write(REG_DRAM_TRAINING_SHADOW_ADDR, reg); 515 516 /* Wait */ 517 do { 518 reg = reg_read(REG_DRAM_TRAINING_SHADOW_ADDR) & 519 (1 << REG_DRAM_TRAINING_AUTO_OFFS); 520 } while (reg); /* Wait for '0' */ 521 522 reg = reg_read(REG_DRAM_TRAINING_ADDR); 523 /* Check if Successful */ 524 if (reg & (1 << REG_DRAM_TRAINING_ERROR_OFFS)) { 525 /* 526 * Read results to arrays - Results are required for WL High 527 * freq Supplement and DQS Centralization 528 */ 529 for (cs = 0; cs < MAX_CS; cs++) { 530 if (dram_info->cs_ena & (1 << cs)) { 531 for (pup = 0; 532 pup < dram_info->num_of_total_pups; 533 pup++) { 534 if (pup == dram_info->num_of_std_pups 535 && dram_info->ecc_ena) 536 pup = ECC_BIT; 537 reg = 538 ddr3_read_pup_reg(PUP_WL_MODE, cs, 539 pup); 540 phase = 541 (reg >> REG_PHY_PHASE_OFFS) & 542 PUP_PHASE_MASK; 543 delay = reg & PUP_DELAY_MASK; 544 dram_info->wl_val[cs][pup][P] = phase; 545 dram_info->wl_val[cs][pup][D] = delay; 546 if ((phase == 1) && (delay >= 0x1D)) { 547 /* 548 * Need to do it here for 549 * uncorrect WL values 550 */ 551 ddr3_write_pup_reg(PUP_WL_MODE, 552 cs, pup, 0, 553 0); 554 dram_info->wl_val[cs][pup][P] = 555 0; 556 dram_info->wl_val[cs][pup][D] = 557 0; 558 } 559 dram_info->wl_val[cs][pup][S] = 560 WL_HI_FREQ_STATE - 1; 561 reg = 562 ddr3_read_pup_reg(PUP_WL_MODE + 0x1, 563 cs, pup); 564 dram_info->wl_val[cs][pup][DQS] = 565 (reg & 0x3F); 566 } 567 #ifdef MV_DEBUG_WL 568 /* 569 * Debug message - Print res for cs[i]: 570 * cs,PUP,Phase,Delay 571 */ 572 DEBUG_WL_S("DDR3 - Write Leveling - Write Leveling Cs - "); 573 DEBUG_WL_D((u32) cs, 1); 574 DEBUG_WL_S(" Results:\n"); 575 for (pup = 0; 576 pup < dram_info->num_of_total_pups; 577 pup++) { 578 DEBUG_WL_S 579 ("DDR3 - Write Leveling - PUP: "); 580 DEBUG_WL_D((u32) pup, 1); 581 DEBUG_WL_S(", Phase: "); 582 DEBUG_WL_D((u32) 583 dram_info->wl_val[cs][pup] 584 [P], 1); 585 DEBUG_WL_S(", Delay: "); 586 DEBUG_WL_D((u32) 587 dram_info->wl_val[cs][pup] 588 [D], 2); 589 DEBUG_WL_S("\n"); 590 } 591 #endif 592 } 593 } 594 595 #ifdef MV88F67XX 596 /* Dynamic pad issue (BTS669) during WL */ 597 if (dpde_flag) { 598 reg = reg_read(REG_DUNIT_CTRL_LOW_ADDR) | 599 (1 << REG_DUNIT_CTRL_LOW_DPDE_OFFS); 600 reg_write(REG_DUNIT_CTRL_LOW_ADDR, reg); 601 } 602 #endif 603 DEBUG_WL_S("DDR3 - Write Leveling - HW WL Ended Successfully\n"); 604 605 /* If target freq = 400 move clock back */ 606 /* Write to control PUP to Control Deskew Regs */ 607 if (freq <= DDR_400) { 608 for (pup = 0; pup <= dram_info->num_of_total_pups; 609 pup++) { 610 ddr3_write_ctrl_pup_reg(1, pup, 611 CNTRL_PUP_DESKEW + pup, 0); 612 } 613 } 614 615 return MV_OK; 616 } else { 617 /* Configure Each PUP with locked leveling settings */ 618 for (cs = 0; cs < MAX_CS; cs++) { 619 if (dram_info->cs_ena & (1 << cs)) { 620 for (pup = 0; 621 pup < dram_info->num_of_total_pups; 622 pup++) { 623 /* ECC support - bit 8 */ 624 pup_num = (pup == dram_info->num_of_std_pups) ? 625 ECC_BIT : pup; 626 ddr3_write_pup_reg(PUP_WL_MODE, cs, 627 pup_num, 0, 0); 628 } 629 } 630 } 631 632 reg_write(REG_DRAM_TRAINING_ADDR, 0); 633 634 /* If target freq = 400 move clock back */ 635 /* Write to control PUP to Control Deskew Regs */ 636 if (freq <= DDR_400) { 637 for (pup = 0; pup <= dram_info->num_of_total_pups; 638 pup++) { 639 ddr3_write_ctrl_pup_reg(1, pup, 640 CNTRL_PUP_DESKEW + pup, 0); 641 } 642 } 643 644 DEBUG_WL_S("DDR3 - Write Leveling - HW WL Ended Successfully\n"); 645 return MV_NO_CHANGE; 646 } 647 } 648 649 /* 650 * Name: ddr3_write_leveling_sw 651 * Desc: Execute Write leveling phase by SW 652 * Args: freq - current sequence frequency 653 * dram_info - main struct 654 * Notes: 655 * Returns: MV_OK if success, MV_FAIL if fail. 656 */ 657 int ddr3_write_leveling_sw(u32 freq, int ratio_2to1, MV_DRAM_INFO *dram_info) 658 { 659 u32 reg, cs, cnt, pup, max_pup_num; 660 u32 res[MAX_CS]; 661 max_pup_num = dram_info->num_of_total_pups; 662 __maybe_unused int dpde_flag = 0; 663 664 /* Debug message - Start Write leveling procedure */ 665 DEBUG_WL_S("DDR3 - Write Leveling - Starting SW WL procedure\n"); 666 667 #ifdef MV88F67XX 668 /* Dynamic pad issue (BTS669) during WL */ 669 reg = reg_read(REG_DUNIT_CTRL_LOW_ADDR); 670 if (reg & (1 << REG_DUNIT_CTRL_LOW_DPDE_OFFS)) { 671 dpde_flag = 1; 672 reg_write(REG_DUNIT_CTRL_LOW_ADDR, 673 reg & ~(1 << REG_DUNIT_CTRL_LOW_DPDE_OFFS)); 674 } 675 #endif 676 677 /* Set Output buffer-off to all CS and correct ODT values */ 678 for (cs = 0; cs < MAX_CS; cs++) { 679 if (dram_info->cs_ena & (1 << cs)) { 680 reg = reg_read(REG_DDR3_MR1_ADDR) & 681 REG_DDR3_MR1_ODT_MASK; 682 reg |= odt_static[dram_info->cs_ena][cs]; 683 reg |= (1 << REG_DDR3_MR1_OUTBUF_DIS_OFFS); 684 685 /* 0x15D0 - DDR3 MR0 Register */ 686 reg_write(REG_DDR3_MR1_ADDR, reg); 687 /* Issue MRS Command to current cs */ 688 reg = REG_SDRAM_OPERATION_CMD_MR1 & 689 ~(1 << (REG_SDRAM_OPERATION_CS_OFFS + cs)); 690 /* 691 * [3-0] = 0x4 - MR1 Command, [11-8] - 692 * enable current cs 693 */ 694 /* 0x1418 - SDRAM Operation Register */ 695 reg_write(REG_SDRAM_OPERATION_ADDR, reg); 696 697 udelay(MRS_DELAY); 698 } 699 } 700 701 DEBUG_WL_FULL_S("DDR3 - Write Leveling - Qoff and RTT Values are set for all Cs\n"); 702 703 /* Enable SW override */ 704 reg = reg_read(REG_DRAM_TRAINING_2_ADDR) | 705 (1 << REG_DRAM_TRAINING_2_SW_OVRD_OFFS); 706 /* [0] = 1 - Enable SW override */ 707 /* 0x15B8 - Training SW 2 Register */ 708 reg_write(REG_DRAM_TRAINING_2_ADDR, reg); 709 DEBUG_WL_FULL_S("DDR3 - Write Leveling - SW Override Enabled\n"); 710 711 /* Enable PHY write leveling mode */ 712 reg = reg_read(REG_DRAM_TRAINING_2_ADDR) & 713 ~(1 << REG_DRAM_TRAINING_2_WL_MODE_OFFS); 714 /* [2] = 0 - TrnWLMode - Enable */ 715 /* 0x15B8 - Training SW 2 Register */ 716 reg_write(REG_DRAM_TRAINING_2_ADDR, reg); 717 /* Reset WL results arry */ 718 memset(dram_info->wl_val, 0, sizeof(u32) * MAX_CS * MAX_PUP_NUM * 7); 719 720 /* Loop for each cs */ 721 for (cs = 0; cs < MAX_CS; cs++) { 722 if (dram_info->cs_ena & (1 << cs)) { 723 DEBUG_WL_FULL_C("DDR3 - Write Leveling - Starting working with Cs - ", 724 (u32) cs, 1); 725 /* Refresh X9 current cs */ 726 DEBUG_WL_FULL_S("DDR3 - Write Leveling - Refresh X9\n"); 727 for (cnt = 0; cnt < COUNT_WL_RFRS; cnt++) { 728 reg = 729 REG_SDRAM_OPERATION_CMD_RFRS & ~(1 << 730 (REG_SDRAM_OPERATION_CS_OFFS 731 + cs)); 732 /* [3-0] = 0x2 - refresh, [11-8] - enable current cs */ 733 reg_write(REG_SDRAM_OPERATION_ADDR, reg); /* 0x1418 - SDRAM Operation Register */ 734 735 do { 736 reg = 737 ((reg_read 738 (REG_SDRAM_OPERATION_ADDR)) & 739 REG_SDRAM_OPERATION_CMD_RFRS_DONE); 740 } while (reg); /* Wait for '0' */ 741 } 742 743 /* Configure MR1 in Cs[CsNum] - write leveling on, output buffer on */ 744 DEBUG_WL_FULL_S("DDR3 - Write Leveling - Configure MR1 for current Cs: WL-on,OB-on\n"); 745 reg = reg_read(REG_DDR3_MR1_ADDR) & 746 REG_DDR3_MR1_OUTBUF_WL_MASK; 747 /* Set ODT Values */ 748 reg &= REG_DDR3_MR1_ODT_MASK; 749 reg |= odt_static[dram_info->cs_ena][cs]; 750 /* Enable WL MODE */ 751 reg |= (1 << REG_DDR3_MR1_WL_ENA_OFFS); 752 /* [7]=1, [12]=0 - Output Buffer and write leveling enabled */ 753 reg_write(REG_DDR3_MR1_ADDR, reg); /* 0x15D4 - DDR3 MR1 Register */ 754 /* Issue MRS Command to current cs */ 755 reg = REG_SDRAM_OPERATION_CMD_MR1 & 756 ~(1 << (REG_SDRAM_OPERATION_CS_OFFS + cs)); 757 /* 758 * [3-0] = 0x4 - MR1 Command, [11-8] - 759 * enable current cs 760 */ 761 /* 0x1418 - SDRAM Operation Register */ 762 reg_write(REG_SDRAM_OPERATION_ADDR, reg); 763 764 udelay(MRS_DELAY); 765 766 /* Write leveling cs[cs] */ 767 if (MV_OK != 768 ddr3_write_leveling_single_cs(cs, freq, ratio_2to1, 769 (u32 *)(res + cs), 770 dram_info)) { 771 DEBUG_WL_FULL_C("DDR3 - Write Leveling single Cs - FAILED - Cs - ", 772 (u32) cs, 1); 773 for (pup = 0; pup < max_pup_num; pup++) { 774 if (((res[cs] >> pup) & 0x1) == 0) { 775 DEBUG_WL_C("Failed Byte : ", 776 pup, 1); 777 } 778 } 779 return MV_FAIL; 780 } 781 782 /* Set TrnWLDeUpd - After each CS is done */ 783 reg = reg_read(REG_TRAINING_WL_ADDR) | 784 (1 << REG_TRAINING_WL_CS_DONE_OFFS); 785 /* 0x16AC - Training Write leveling register */ 786 reg_write(REG_TRAINING_WL_ADDR, reg); 787 788 /* 789 * Debug message - Finished Write leveling cs[cs] - 790 * each PUP Fail/Success 791 */ 792 DEBUG_WL_FULL_C("DDR3 - Write Leveling - Finished Cs - ", (u32) cs, 793 1); 794 DEBUG_WL_FULL_C("DDR3 - Write Leveling - The Results: 1-PUP locked, 0-PUP failed -", 795 (u32) res[cs], 3); 796 797 /* 798 * Configure MR1 in cs[cs] - write leveling off (0), 799 * output buffer off (1) 800 */ 801 reg = reg_read(REG_DDR3_MR1_ADDR) & 802 REG_DDR3_MR1_OUTBUF_WL_MASK; 803 reg |= (1 << REG_DDR3_MR1_OUTBUF_DIS_OFFS); 804 /* No need to sort ODT since it is same CS */ 805 /* 0x15D4 - DDR3 MR1 Register */ 806 reg_write(REG_DDR3_MR1_ADDR, reg); 807 /* Issue MRS Command to current cs */ 808 reg = REG_SDRAM_OPERATION_CMD_MR1 & 809 ~(1 << (REG_SDRAM_OPERATION_CS_OFFS + cs)); 810 /* 811 * [3-0] = 0x4 - MR1 Command, [11-8] - 812 * enable current cs 813 */ 814 /* 0x1418 - SDRAM Operation Register */ 815 reg_write(REG_SDRAM_OPERATION_ADDR, reg); 816 817 udelay(MRS_DELAY); 818 } 819 } 820 821 /* Disable WL Mode */ 822 /* [2]=1 - TrnWLMode - Disable */ 823 reg = reg_read(REG_DRAM_TRAINING_2_ADDR); 824 reg |= (1 << REG_DRAM_TRAINING_2_WL_MODE_OFFS); 825 /* 0x15B8 - Training SW 2 Register */ 826 reg_write(REG_DRAM_TRAINING_2_ADDR, reg); 827 828 /* Disable SW override - Must be in a different stage */ 829 /* [0]=0 - Enable SW override */ 830 reg = reg_read(REG_DRAM_TRAINING_2_ADDR); 831 reg &= ~(1 << REG_DRAM_TRAINING_2_SW_OVRD_OFFS); 832 /* 0x15B8 - Training SW 2 Register */ 833 reg_write(REG_DRAM_TRAINING_2_ADDR, reg); 834 835 /* Set Output buffer-on to all CS and correct ODT values */ 836 for (cs = 0; cs < MAX_CS; cs++) { 837 if (dram_info->cs_ena & (1 << cs)) { 838 reg = reg_read(REG_DDR3_MR1_ADDR) & 839 REG_DDR3_MR1_ODT_MASK; 840 reg &= REG_DDR3_MR1_OUTBUF_WL_MASK; 841 reg |= odt_static[dram_info->cs_ena][cs]; 842 843 /* 0x15D0 - DDR3 MR1 Register */ 844 reg_write(REG_DDR3_MR1_ADDR, reg); 845 /* Issue MRS Command to current cs */ 846 reg = REG_SDRAM_OPERATION_CMD_MR1 & 847 ~(1 << (REG_SDRAM_OPERATION_CS_OFFS + cs)); 848 /* 849 * [3-0] = 0x4 - MR1 Command, [11-8] - 850 * enable current cs 851 */ 852 /* 0x1418 - SDRAM Operation Register */ 853 reg_write(REG_SDRAM_OPERATION_ADDR, reg); 854 855 udelay(MRS_DELAY); 856 } 857 } 858 859 #ifdef MV88F67XX 860 /* Dynamic pad issue (BTS669) during WL */ 861 if (dpde_flag) { 862 reg = reg_read(REG_DUNIT_CTRL_LOW_ADDR) | 863 (1 << REG_DUNIT_CTRL_LOW_DPDE_OFFS); 864 reg_write(REG_DUNIT_CTRL_LOW_ADDR, reg); 865 } 866 #endif 867 DEBUG_WL_FULL_S("DDR3 - Write Leveling - Finished WL procedure for all Cs\n"); 868 869 return MV_OK; 870 } 871 872 #if !defined(MV88F672X) 873 /* 874 * Name: ddr3_write_leveling_sw 875 * Desc: Execute Write leveling phase by SW 876 * Args: freq - current sequence frequency 877 * dram_info - main struct 878 * Notes: 879 * Returns: MV_OK if success, MV_FAIL if fail. 880 */ 881 int ddr3_write_leveling_sw_reg_dimm(u32 freq, int ratio_2to1, 882 MV_DRAM_INFO *dram_info) 883 { 884 u32 reg, cs, cnt, pup; 885 u32 res[MAX_CS]; 886 __maybe_unused int dpde_flag = 0; 887 888 /* Debug message - Start Write leveling procedure */ 889 DEBUG_WL_S("DDR3 - Write Leveling - Starting SW WL procedure\n"); 890 891 #ifdef MV88F67XX 892 /* Dynamic pad issue (BTS669) during WL */ 893 reg = reg_read(REG_DUNIT_CTRL_LOW_ADDR); 894 if (reg & (1 << REG_DUNIT_CTRL_LOW_DPDE_OFFS)) { 895 dpde_flag = 1; 896 reg_write(REG_DUNIT_CTRL_LOW_ADDR, 897 reg & ~(1 << REG_DUNIT_CTRL_LOW_DPDE_OFFS)); 898 } 899 #endif 900 901 /* If target freq = 400 move clock start point */ 902 /* Write to control PUP to Control Deskew Regs */ 903 if (freq <= DDR_400) { 904 for (pup = 0; pup <= dram_info->num_of_total_pups; pup++) { 905 /* PUP_DELAY_MASK 0x1F */ 906 /* reg = 0x0C10001F + (uj << 16); */ 907 ddr3_write_ctrl_pup_reg(1, pup, CNTRL_PUP_DESKEW + pup, 908 0x1F); 909 } 910 } 911 912 /* Set Output buffer-off to all CS and correct ODT values */ 913 for (cs = 0; cs < MAX_CS; cs++) { 914 if (dram_info->cs_ena & (1 << cs)) { 915 reg = reg_read(REG_DDR3_MR1_ADDR) & 916 REG_DDR3_MR1_ODT_MASK; 917 reg |= odt_static[dram_info->cs_ena][cs]; 918 reg |= (1 << REG_DDR3_MR1_OUTBUF_DIS_OFFS); 919 920 /* 0x15D0 - DDR3 MR0 Register */ 921 reg_write(REG_DDR3_MR1_ADDR, reg); 922 /* Issue MRS Command to current cs */ 923 reg = REG_SDRAM_OPERATION_CMD_MR1 & 924 ~(1 << (REG_SDRAM_OPERATION_CS_OFFS + cs)); 925 /* 926 * [3-0] = 0x4 - MR1 Command, [11-8] - 927 * enable current cs 928 */ 929 /* 0x1418 - SDRAM Operation Register */ 930 reg_write(REG_SDRAM_OPERATION_ADDR, reg); 931 932 udelay(MRS_DELAY); 933 } 934 } 935 936 DEBUG_WL_FULL_S("DDR3 - Write Leveling - Qoff and RTT Values are set for all Cs\n"); 937 938 /* Enable SW override */ 939 reg = reg_read(REG_DRAM_TRAINING_2_ADDR) | 940 (1 << REG_DRAM_TRAINING_2_SW_OVRD_OFFS); 941 /* [0] = 1 - Enable SW override */ 942 /* 0x15B8 - Training SW 2 Register */ 943 reg_write(REG_DRAM_TRAINING_2_ADDR, reg); 944 DEBUG_WL_FULL_S("DDR3 - Write Leveling - SW Override Enabled\n"); 945 946 /* Enable PHY write leveling mode */ 947 reg = reg_read(REG_DRAM_TRAINING_2_ADDR) & 948 ~(1 << REG_DRAM_TRAINING_2_WL_MODE_OFFS); 949 /* [2] = 0 - TrnWLMode - Enable */ 950 /* 0x15B8 - Training SW 2 Register */ 951 reg_write(REG_DRAM_TRAINING_2_ADDR, reg); 952 953 /* Loop for each cs */ 954 for (cs = 0; cs < MAX_CS; cs++) { 955 if (dram_info->cs_ena & (1 << cs)) { 956 DEBUG_WL_FULL_C("DDR3 - Write Leveling - Starting working with Cs - ", 957 (u32) cs, 1); 958 959 /* Refresh X9 current cs */ 960 DEBUG_WL_FULL_S("DDR3 - Write Leveling - Refresh X9\n"); 961 for (cnt = 0; cnt < COUNT_WL_RFRS; cnt++) { 962 reg = 963 REG_SDRAM_OPERATION_CMD_RFRS & ~(1 << 964 (REG_SDRAM_OPERATION_CS_OFFS 965 + cs)); 966 /* [3-0] = 0x2 - refresh, [11-8] - enable current cs */ 967 reg_write(REG_SDRAM_OPERATION_ADDR, reg); /* 0x1418 - SDRAM Operation Register */ 968 969 do { 970 reg = 971 ((reg_read 972 (REG_SDRAM_OPERATION_ADDR)) & 973 REG_SDRAM_OPERATION_CMD_RFRS_DONE); 974 } while (reg); /* Wait for '0' */ 975 } 976 977 /* 978 * Configure MR1 in Cs[CsNum] - write leveling on, 979 * output buffer on 980 */ 981 DEBUG_WL_FULL_S("DDR3 - Write Leveling - Configure MR1 for current Cs: WL-on,OB-on\n"); 982 reg = reg_read(REG_DDR3_MR1_ADDR) & 983 REG_DDR3_MR1_OUTBUF_WL_MASK; 984 /* Set ODT Values */ 985 reg &= REG_DDR3_MR1_ODT_MASK; 986 reg |= odt_static[dram_info->cs_ena][cs]; 987 /* Enable WL MODE */ 988 reg |= (1 << REG_DDR3_MR1_WL_ENA_OFFS); 989 /* 990 * [7]=1, [12]=0 - Output Buffer and write leveling 991 * enabled 992 */ 993 /* 0x15D4 - DDR3 MR1 Register */ 994 reg_write(REG_DDR3_MR1_ADDR, reg); 995 /* Issue MRS Command to current cs */ 996 reg = REG_SDRAM_OPERATION_CMD_MR1 & 997 ~(1 << (REG_SDRAM_OPERATION_CS_OFFS + cs)); 998 /* 999 * [3-0] = 0x4 - MR1 Command, [11-8] - 1000 * enable current cs 1001 */ 1002 /* 0x1418 - SDRAM Operation Register */ 1003 reg_write(REG_SDRAM_OPERATION_ADDR, reg); 1004 1005 udelay(MRS_DELAY); 1006 1007 /* Write leveling cs[cs] */ 1008 if (MV_OK != 1009 ddr3_write_leveling_single_cs(cs, freq, ratio_2to1, 1010 (u32 *)(res + cs), 1011 dram_info)) { 1012 DEBUG_WL_FULL_C("DDR3 - Write Leveling single Cs - FAILED - Cs - ", 1013 (u32) cs, 1); 1014 return MV_FAIL; 1015 } 1016 1017 /* Set TrnWLDeUpd - After each CS is done */ 1018 reg = reg_read(REG_TRAINING_WL_ADDR) | 1019 (1 << REG_TRAINING_WL_CS_DONE_OFFS); 1020 /* 0x16AC - Training Write leveling register */ 1021 reg_write(REG_TRAINING_WL_ADDR, reg); 1022 1023 /* 1024 * Debug message - Finished Write leveling cs[cs] - 1025 * each PUP Fail/Success 1026 */ 1027 DEBUG_WL_FULL_C("DDR3 - Write Leveling - Finished Cs - ", (u32) cs, 1028 1); 1029 DEBUG_WL_FULL_C("DDR3 - Write Leveling - The Results: 1-PUP locked, 0-PUP failed -", 1030 (u32) res[cs], 3); 1031 1032 /* Configure MR1 in cs[cs] - write leveling off (0), output buffer off (1) */ 1033 reg = reg_read(REG_DDR3_MR1_ADDR) & 1034 REG_DDR3_MR1_OUTBUF_WL_MASK; 1035 reg |= (1 << REG_DDR3_MR1_OUTBUF_DIS_OFFS); 1036 /* No need to sort ODT since it is same CS */ 1037 /* 0x15D4 - DDR3 MR1 Register */ 1038 reg_write(REG_DDR3_MR1_ADDR, reg); 1039 /* Issue MRS Command to current cs */ 1040 reg = REG_SDRAM_OPERATION_CMD_MR1 & 1041 ~(1 << (REG_SDRAM_OPERATION_CS_OFFS + cs)); 1042 /* 1043 * [3-0] = 0x4 - MR1 Command, [11-8] - 1044 * enable current cs 1045 */ 1046 /* 0x1418 - SDRAM Operation Register */ 1047 reg_write(REG_SDRAM_OPERATION_ADDR, reg); 1048 1049 udelay(MRS_DELAY); 1050 } 1051 } 1052 1053 /* Disable WL Mode */ 1054 /* [2]=1 - TrnWLMode - Disable */ 1055 reg = reg_read(REG_DRAM_TRAINING_2_ADDR); 1056 reg |= (1 << REG_DRAM_TRAINING_2_WL_MODE_OFFS); 1057 /* 0x15B8 - Training SW 2 Register */ 1058 reg_write(REG_DRAM_TRAINING_2_ADDR, reg); 1059 1060 /* Disable SW override - Must be in a different stage */ 1061 /* [0]=0 - Enable SW override */ 1062 reg = reg_read(REG_DRAM_TRAINING_2_ADDR); 1063 reg &= ~(1 << REG_DRAM_TRAINING_2_SW_OVRD_OFFS); 1064 /* 0x15B8 - Training SW 2 Register */ 1065 reg_write(REG_DRAM_TRAINING_2_ADDR, reg); 1066 1067 /* Set Output buffer-on to all CS and correct ODT values */ 1068 for (cs = 0; cs < MAX_CS; cs++) { 1069 if (dram_info->cs_ena & (1 << cs)) { 1070 reg = reg_read(REG_DDR3_MR1_ADDR) & 1071 REG_DDR3_MR1_ODT_MASK; 1072 reg &= REG_DDR3_MR1_OUTBUF_WL_MASK; 1073 reg |= odt_static[dram_info->cs_ena][cs]; 1074 1075 /* 0x15D0 - DDR3 MR1 Register */ 1076 reg_write(REG_DDR3_MR1_ADDR, reg); 1077 /* Issue MRS Command to current cs */ 1078 reg = REG_SDRAM_OPERATION_CMD_MR1 & 1079 ~(1 << (REG_SDRAM_OPERATION_CS_OFFS + cs)); 1080 /* 1081 * [3-0] = 0x4 - MR1 Command, [11-8] - 1082 * enable current cs 1083 */ 1084 /* 0x1418 - SDRAM Operation Register */ 1085 reg_write(REG_SDRAM_OPERATION_ADDR, reg); 1086 1087 udelay(MRS_DELAY); 1088 } 1089 } 1090 1091 #ifdef MV88F67XX 1092 /* Dynamic pad issue (BTS669) during WL */ 1093 if (dpde_flag) { 1094 reg = reg_read(REG_DUNIT_CTRL_LOW_ADDR) | 1095 (1 << REG_DUNIT_CTRL_LOW_DPDE_OFFS); 1096 reg_write(REG_DUNIT_CTRL_LOW_ADDR, reg); 1097 } 1098 #endif 1099 1100 /* If target freq = 400 move clock back */ 1101 /* Write to control PUP to Control Deskew Regs */ 1102 if (freq <= DDR_400) { 1103 for (pup = 0; pup <= dram_info->num_of_total_pups; pup++) { 1104 ddr3_write_ctrl_pup_reg(1, pup, CNTRL_PUP_DESKEW + pup, 1105 0); 1106 } 1107 } 1108 1109 DEBUG_WL_FULL_S("DDR3 - Write Leveling - Finished WL procedure for all Cs\n"); 1110 return MV_OK; 1111 } 1112 #endif 1113 1114 /* 1115 * Name: ddr3_write_leveling_single_cs 1116 * Desc: Execute Write leveling for single Chip select 1117 * Args: cs - current chip select 1118 * freq - current sequence frequency 1119 * result - res array 1120 * dram_info - main struct 1121 * Notes: 1122 * Returns: MV_OK if success, MV_FAIL if fail. 1123 */ 1124 static int ddr3_write_leveling_single_cs(u32 cs, u32 freq, int ratio_2to1, 1125 u32 *result, MV_DRAM_INFO *dram_info) 1126 { 1127 u32 reg, pup_num, delay, phase, phaseMax, max_pup_num, pup, 1128 max_pup_mask; 1129 1130 max_pup_num = dram_info->num_of_total_pups; 1131 *result = 0; 1132 u32 flag[MAX_PUP_NUM] = { 0 }; 1133 1134 DEBUG_WL_FULL_C("DDR3 - Write Leveling Single Cs - WL for Cs - ", 1135 (u32) cs, 1); 1136 1137 switch (max_pup_num) { 1138 case 2: 1139 max_pup_mask = 0x3; 1140 break; 1141 case 4: 1142 max_pup_mask = 0xf; 1143 DEBUG_WL_C("max_pup_mask = ", max_pup_mask, 3); 1144 break; 1145 case 5: 1146 max_pup_mask = 0x1f; 1147 DEBUG_WL_C("max_pup_mask = ", max_pup_mask, 3); 1148 break; 1149 case 8: 1150 max_pup_mask = 0xff; 1151 DEBUG_WL_C("max_pup_mask = ", max_pup_mask, 3); 1152 break; 1153 case 9: 1154 max_pup_mask = 0x1ff; 1155 DEBUG_WL_C("max_pup_mask = ", max_pup_mask, 3); 1156 break; 1157 default: 1158 DEBUG_WL_C("ddr3_write_leveling_single_cs wrong max_pup_num = ", 1159 max_pup_num, 3); 1160 return MV_FAIL; 1161 } 1162 1163 /* CS ODT Override */ 1164 reg = reg_read(REG_SDRAM_ODT_CTRL_HIGH_ADDR) & 1165 REG_SDRAM_ODT_CTRL_HIGH_OVRD_MASK; 1166 reg |= (REG_SDRAM_ODT_CTRL_HIGH_OVRD_ENA << (2 * cs)); 1167 /* Set 0x3 - Enable ODT on the curent cs and disable on other cs */ 1168 /* 0x1498 - SDRAM ODT Control high */ 1169 reg_write(REG_SDRAM_ODT_CTRL_HIGH_ADDR, reg); 1170 1171 DEBUG_WL_FULL_S("DDR3 - Write Leveling Single Cs - ODT Asserted for current Cs\n"); 1172 1173 /* tWLMRD Delay */ 1174 /* Delay of minimum 40 Dram clock cycles - 20 Tclk cycles */ 1175 udelay(1); 1176 1177 /* [1:0] - current cs number */ 1178 reg = (reg_read(REG_TRAINING_WL_ADDR) & REG_TRAINING_WL_CS_MASK) | cs; 1179 reg |= (1 << REG_TRAINING_WL_UPD_OFFS); /* [2] - trnWLCsUpd */ 1180 /* 0x16AC - Training Write leveling register */ 1181 reg_write(REG_TRAINING_WL_ADDR, reg); 1182 1183 /* Broadcast to all PUPs: Reset DQS phase, reset leveling delay */ 1184 ddr3_write_pup_reg(PUP_WL_MODE, cs, PUP_BC, 0, 0); 1185 1186 /* Seek Edge */ 1187 DEBUG_WL_FULL_S("DDR3 - Write Leveling Single Cs - Seek Edge - Current Cs\n"); 1188 1189 /* Drive DQS high for one cycle - All data PUPs */ 1190 DEBUG_WL_FULL_S("DDR3 - Write Leveling Single Cs - Seek Edge - Driving DQS high for one cycle\n"); 1191 if (!ratio_2to1) { 1192 reg = (reg_read(REG_TRAINING_WL_ADDR) & 1193 REG_TRAINING_WL_RATIO_MASK) | REG_TRAINING_WL_1TO1; 1194 } else { 1195 reg = (reg_read(REG_TRAINING_WL_ADDR) & 1196 REG_TRAINING_WL_RATIO_MASK) | REG_TRAINING_WL_2TO1; 1197 } 1198 /* 0x16AC - Training Write leveling register */ 1199 reg_write(REG_TRAINING_WL_ADDR, reg); 1200 1201 /* Wait tWLdelay */ 1202 do { 1203 /* [29] - trnWLDelayExp */ 1204 reg = (reg_read(REG_TRAINING_WL_ADDR)) & 1205 REG_TRAINING_WL_DELAYEXP_MASK; 1206 } while (reg == 0x0); /* Wait for '1' */ 1207 1208 /* Read WL res */ 1209 reg = (reg_read(REG_TRAINING_WL_ADDR) >> REG_TRAINING_WL_RESULTS_OFFS) & 1210 REG_TRAINING_WL_RESULTS_MASK; 1211 /* [28:20] - TrnWLResult */ 1212 1213 if (!ratio_2to1) /* Different phase options for 2:1 or 1:1 modes */ 1214 phaseMax = MAX_PHASE_1TO1; 1215 else 1216 phaseMax = MAX_PHASE_2TO1; 1217 1218 DEBUG_WL_FULL_S("DDR3 - Write Leveling Single Cs - Seek Edge - Shift DQS + Octet Leveling\n"); 1219 1220 /* Shift DQS + Octet leveling */ 1221 for (phase = 0; phase < phaseMax; phase++) { 1222 for (delay = 0; delay < MAX_DELAY; delay++) { 1223 /* Broadcast to all PUPs: DQS phase,leveling delay */ 1224 ddr3_write_pup_reg(PUP_WL_MODE, cs, PUP_BC, phase, 1225 delay); 1226 1227 udelay(1); /* Delay of 3 Tclk cycles */ 1228 1229 DEBUG_WL_FULL_S("DDR3 - Write Leveling Single Cs - Seek Edge: Phase = "); 1230 DEBUG_WL_FULL_D((u32) phase, 1); 1231 DEBUG_WL_FULL_S(", Delay = "); 1232 DEBUG_WL_FULL_D((u32) delay, 1); 1233 DEBUG_WL_FULL_S("\n"); 1234 1235 /* Drive DQS high for one cycle - All data PUPs */ 1236 if (!ratio_2to1) { 1237 reg = (reg_read(REG_TRAINING_WL_ADDR) & 1238 REG_TRAINING_WL_RATIO_MASK) | 1239 REG_TRAINING_WL_1TO1; 1240 } else { 1241 reg = (reg_read(REG_TRAINING_WL_ADDR) & 1242 REG_TRAINING_WL_RATIO_MASK) | 1243 REG_TRAINING_WL_2TO1; 1244 } 1245 reg_write(REG_TRAINING_WL_ADDR, reg); /* 0x16AC */ 1246 1247 /* Wait tWLdelay */ 1248 do { 1249 reg = (reg_read(REG_TRAINING_WL_ADDR)) & 1250 REG_TRAINING_WL_DELAYEXP_MASK; 1251 } while (reg == 0x0); /* [29] Wait for '1' */ 1252 1253 /* Read WL res */ 1254 reg = reg_read(REG_TRAINING_WL_ADDR); 1255 reg = (reg >> REG_TRAINING_WL_RESULTS_OFFS) & 1256 REG_TRAINING_WL_RESULTS_MASK; /* [28:20] */ 1257 1258 DEBUG_WL_FULL_C("DDR3 - Write Leveling Single Cs - Seek Edge: Results = ", 1259 (u32) reg, 3); 1260 1261 /* Update State machine */ 1262 for (pup = 0; pup < (max_pup_num); pup++) { 1263 /* ECC support - bit 8 */ 1264 pup_num = (pup == dram_info->num_of_std_pups) ? 1265 ECC_BIT : pup; 1266 if (dram_info->wl_val[cs][pup][S] == 0) { 1267 /* Update phase to PUP */ 1268 dram_info->wl_val[cs][pup][P] = phase; 1269 /* Update delay to PUP */ 1270 dram_info->wl_val[cs][pup][D] = delay; 1271 } 1272 1273 if (((reg >> pup_num) & 0x1) == 0) 1274 flag[pup_num] = 1; 1275 1276 if (((reg >> pup_num) & 0x1) 1277 && (flag[pup_num] == 1) 1278 && (dram_info->wl_val[cs][pup][S] == 0)) { 1279 /* 1280 * If the PUP is locked now and in last 1281 * counter states 1282 */ 1283 /* Go to next state */ 1284 dram_info->wl_val[cs][pup][S] = 1; 1285 /* Set res */ 1286 *result = *result | (1 << pup_num); 1287 } 1288 } 1289 1290 /* If all locked - Break the loops - Finished */ 1291 if (*result == max_pup_mask) { 1292 phase = phaseMax; 1293 delay = MAX_DELAY; 1294 DEBUG_WL_S("DDR3 - Write Leveling Single Cs - Seek Edge: All Locked\n"); 1295 } 1296 } 1297 } 1298 1299 /* Debug message - Print res for cs[i]: cs,PUP,Phase,Delay */ 1300 DEBUG_WL_C("DDR3 - Write Leveling - Results for CS - ", (u32) cs, 1); 1301 for (pup = 0; pup < (max_pup_num); pup++) { 1302 DEBUG_WL_S("DDR3 - Write Leveling - PUP: "); 1303 DEBUG_WL_D((u32) pup, 1); 1304 DEBUG_WL_S(", Phase: "); 1305 DEBUG_WL_D((u32) dram_info->wl_val[cs][pup][P], 1); 1306 DEBUG_WL_S(", Delay: "); 1307 DEBUG_WL_D((u32) dram_info->wl_val[cs][pup][D], 2); 1308 DEBUG_WL_S("\n"); 1309 } 1310 1311 /* Check if some not locked and return error */ 1312 if (*result != max_pup_mask) { 1313 DEBUG_WL_S("DDR3 - Write Leveling - ERROR - not all PUPS were locked\n"); 1314 return MV_FAIL; 1315 } 1316 1317 /* Configure Each PUP with locked leveling settings */ 1318 for (pup = 0; pup < (max_pup_num); pup++) { 1319 /* ECC support - bit 8 */ 1320 pup_num = (pup == dram_info->num_of_std_pups) ? ECC_BIT : pup; 1321 phase = dram_info->wl_val[cs][pup][P]; 1322 delay = dram_info->wl_val[cs][pup][D]; 1323 ddr3_write_pup_reg(PUP_WL_MODE, cs, pup_num, phase, delay); 1324 } 1325 1326 /* CS ODT Override */ 1327 reg = reg_read(REG_SDRAM_ODT_CTRL_HIGH_ADDR) & 1328 REG_SDRAM_ODT_CTRL_HIGH_OVRD_MASK; 1329 /* 0x1498 - SDRAM ODT Control high */ 1330 reg_write(REG_SDRAM_ODT_CTRL_HIGH_ADDR, reg); 1331 1332 return MV_OK; 1333 } 1334 1335 /* 1336 * Perform DDR3 Control PUP Indirect Write 1337 */ 1338 static void ddr3_write_ctrl_pup_reg(int bc_acc, u32 pup, u32 reg_addr, u32 data) 1339 { 1340 u32 reg = 0; 1341 1342 /* Store value for write */ 1343 reg = (data & 0xFFFF); 1344 1345 /* Set bit 26 for control PHY access */ 1346 reg |= (1 << REG_PHY_CNTRL_OFFS); 1347 1348 /* Configure BC or UC access to PHYs */ 1349 if (bc_acc == 1) 1350 reg |= (1 << REG_PHY_BC_OFFS); 1351 else 1352 reg |= (pup << REG_PHY_PUP_OFFS); 1353 1354 /* Set PHY register address to write to */ 1355 reg |= (reg_addr << REG_PHY_CS_OFFS); 1356 1357 reg_write(REG_PHY_REGISTRY_FILE_ACCESS_ADDR, reg); /* 0x16A0 */ 1358 reg |= REG_PHY_REGISTRY_FILE_ACCESS_OP_WR; 1359 reg_write(REG_PHY_REGISTRY_FILE_ACCESS_ADDR, reg); /* 0x16A0 */ 1360 1361 do { 1362 reg = (reg_read(REG_PHY_REGISTRY_FILE_ACCESS_ADDR)) & 1363 REG_PHY_REGISTRY_FILE_ACCESS_OP_DONE; 1364 } while (reg); /* Wait for '0' to mark the end of the transaction */ 1365 } 1366
