Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 1 | /* |
Yann Gautier | 634591d | 2021-09-07 09:07:35 +0200 | [diff] [blame] | 2 | * Copyright (C) 2018-2022, STMicroelectronics - All Rights Reserved |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 3 | * |
| 4 | * SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause |
| 5 | */ |
| 6 | |
Yann Gautier | 1a3fc9f | 2019-01-17 14:35:22 +0100 | [diff] [blame] | 7 | #include <errno.h> |
Antonio Nino Diaz | e0f9063 | 2018-12-14 00:18:21 +0000 | [diff] [blame] | 8 | #include <stddef.h> |
| 9 | |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 10 | #include <arch.h> |
| 11 | #include <arch_helpers.h> |
Antonio Nino Diaz | e0f9063 | 2018-12-14 00:18:21 +0000 | [diff] [blame] | 12 | #include <common/debug.h> |
Yann Gautier | a205a5c | 2021-08-30 15:06:54 +0200 | [diff] [blame] | 13 | #include <drivers/clk.h> |
Antonio Nino Diaz | e0f9063 | 2018-12-14 00:18:21 +0000 | [diff] [blame] | 14 | #include <drivers/delay_timer.h> |
Antonio Nino Diaz | e0f9063 | 2018-12-14 00:18:21 +0000 | [diff] [blame] | 15 | #include <drivers/st/stm32mp1_ddr.h> |
| 16 | #include <drivers/st/stm32mp1_ddr_regs.h> |
Antonio Nino Diaz | e0f9063 | 2018-12-14 00:18:21 +0000 | [diff] [blame] | 17 | #include <drivers/st/stm32mp1_pwr.h> |
| 18 | #include <drivers/st/stm32mp1_ram.h> |
Yann Gautier | 634591d | 2021-09-07 09:07:35 +0200 | [diff] [blame] | 19 | #include <drivers/st/stm32mp_pmic.h> |
Antonio Nino Diaz | e0f9063 | 2018-12-14 00:18:21 +0000 | [diff] [blame] | 20 | #include <lib/mmio.h> |
| 21 | #include <plat/common/platform.h> |
| 22 | |
Yann Gautier | 634591d | 2021-09-07 09:07:35 +0200 | [diff] [blame] | 23 | #include <platform_def.h> |
| 24 | |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 25 | struct reg_desc { |
| 26 | const char *name; |
| 27 | uint16_t offset; /* Offset for base address */ |
| 28 | uint8_t par_offset; /* Offset for parameter array */ |
| 29 | }; |
| 30 | |
| 31 | #define INVALID_OFFSET 0xFFU |
| 32 | |
Yann Gautier | 2299d57 | 2019-02-14 11:14:39 +0100 | [diff] [blame] | 33 | #define TIMEOUT_US_1S 1000000U |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 34 | |
| 35 | #define DDRCTL_REG(x, y) \ |
| 36 | { \ |
| 37 | .name = #x, \ |
| 38 | .offset = offsetof(struct stm32mp1_ddrctl, x), \ |
| 39 | .par_offset = offsetof(struct y, x) \ |
| 40 | } |
| 41 | |
| 42 | #define DDRPHY_REG(x, y) \ |
| 43 | { \ |
| 44 | .name = #x, \ |
| 45 | .offset = offsetof(struct stm32mp1_ddrphy, x), \ |
| 46 | .par_offset = offsetof(struct y, x) \ |
| 47 | } |
| 48 | |
| 49 | #define DDRCTL_REG_REG(x) DDRCTL_REG(x, stm32mp1_ddrctrl_reg) |
| 50 | static const struct reg_desc ddr_reg[] = { |
| 51 | DDRCTL_REG_REG(mstr), |
| 52 | DDRCTL_REG_REG(mrctrl0), |
| 53 | DDRCTL_REG_REG(mrctrl1), |
| 54 | DDRCTL_REG_REG(derateen), |
| 55 | DDRCTL_REG_REG(derateint), |
| 56 | DDRCTL_REG_REG(pwrctl), |
| 57 | DDRCTL_REG_REG(pwrtmg), |
| 58 | DDRCTL_REG_REG(hwlpctl), |
| 59 | DDRCTL_REG_REG(rfshctl0), |
| 60 | DDRCTL_REG_REG(rfshctl3), |
| 61 | DDRCTL_REG_REG(crcparctl0), |
| 62 | DDRCTL_REG_REG(zqctl0), |
| 63 | DDRCTL_REG_REG(dfitmg0), |
| 64 | DDRCTL_REG_REG(dfitmg1), |
| 65 | DDRCTL_REG_REG(dfilpcfg0), |
| 66 | DDRCTL_REG_REG(dfiupd0), |
| 67 | DDRCTL_REG_REG(dfiupd1), |
| 68 | DDRCTL_REG_REG(dfiupd2), |
| 69 | DDRCTL_REG_REG(dfiphymstr), |
| 70 | DDRCTL_REG_REG(odtmap), |
| 71 | DDRCTL_REG_REG(dbg0), |
| 72 | DDRCTL_REG_REG(dbg1), |
| 73 | DDRCTL_REG_REG(dbgcmd), |
| 74 | DDRCTL_REG_REG(poisoncfg), |
| 75 | DDRCTL_REG_REG(pccfg), |
| 76 | }; |
| 77 | |
| 78 | #define DDRCTL_REG_TIMING(x) DDRCTL_REG(x, stm32mp1_ddrctrl_timing) |
| 79 | static const struct reg_desc ddr_timing[] = { |
| 80 | DDRCTL_REG_TIMING(rfshtmg), |
| 81 | DDRCTL_REG_TIMING(dramtmg0), |
| 82 | DDRCTL_REG_TIMING(dramtmg1), |
| 83 | DDRCTL_REG_TIMING(dramtmg2), |
| 84 | DDRCTL_REG_TIMING(dramtmg3), |
| 85 | DDRCTL_REG_TIMING(dramtmg4), |
| 86 | DDRCTL_REG_TIMING(dramtmg5), |
| 87 | DDRCTL_REG_TIMING(dramtmg6), |
| 88 | DDRCTL_REG_TIMING(dramtmg7), |
| 89 | DDRCTL_REG_TIMING(dramtmg8), |
| 90 | DDRCTL_REG_TIMING(dramtmg14), |
| 91 | DDRCTL_REG_TIMING(odtcfg), |
| 92 | }; |
| 93 | |
| 94 | #define DDRCTL_REG_MAP(x) DDRCTL_REG(x, stm32mp1_ddrctrl_map) |
| 95 | static const struct reg_desc ddr_map[] = { |
| 96 | DDRCTL_REG_MAP(addrmap1), |
| 97 | DDRCTL_REG_MAP(addrmap2), |
| 98 | DDRCTL_REG_MAP(addrmap3), |
| 99 | DDRCTL_REG_MAP(addrmap4), |
| 100 | DDRCTL_REG_MAP(addrmap5), |
| 101 | DDRCTL_REG_MAP(addrmap6), |
| 102 | DDRCTL_REG_MAP(addrmap9), |
| 103 | DDRCTL_REG_MAP(addrmap10), |
| 104 | DDRCTL_REG_MAP(addrmap11), |
| 105 | }; |
| 106 | |
| 107 | #define DDRCTL_REG_PERF(x) DDRCTL_REG(x, stm32mp1_ddrctrl_perf) |
| 108 | static const struct reg_desc ddr_perf[] = { |
| 109 | DDRCTL_REG_PERF(sched), |
| 110 | DDRCTL_REG_PERF(sched1), |
| 111 | DDRCTL_REG_PERF(perfhpr1), |
| 112 | DDRCTL_REG_PERF(perflpr1), |
| 113 | DDRCTL_REG_PERF(perfwr1), |
| 114 | DDRCTL_REG_PERF(pcfgr_0), |
| 115 | DDRCTL_REG_PERF(pcfgw_0), |
| 116 | DDRCTL_REG_PERF(pcfgqos0_0), |
| 117 | DDRCTL_REG_PERF(pcfgqos1_0), |
| 118 | DDRCTL_REG_PERF(pcfgwqos0_0), |
| 119 | DDRCTL_REG_PERF(pcfgwqos1_0), |
| 120 | DDRCTL_REG_PERF(pcfgr_1), |
| 121 | DDRCTL_REG_PERF(pcfgw_1), |
| 122 | DDRCTL_REG_PERF(pcfgqos0_1), |
| 123 | DDRCTL_REG_PERF(pcfgqos1_1), |
| 124 | DDRCTL_REG_PERF(pcfgwqos0_1), |
| 125 | DDRCTL_REG_PERF(pcfgwqos1_1), |
| 126 | }; |
| 127 | |
| 128 | #define DDRPHY_REG_REG(x) DDRPHY_REG(x, stm32mp1_ddrphy_reg) |
| 129 | static const struct reg_desc ddrphy_reg[] = { |
| 130 | DDRPHY_REG_REG(pgcr), |
| 131 | DDRPHY_REG_REG(aciocr), |
| 132 | DDRPHY_REG_REG(dxccr), |
| 133 | DDRPHY_REG_REG(dsgcr), |
| 134 | DDRPHY_REG_REG(dcr), |
| 135 | DDRPHY_REG_REG(odtcr), |
| 136 | DDRPHY_REG_REG(zq0cr1), |
| 137 | DDRPHY_REG_REG(dx0gcr), |
| 138 | DDRPHY_REG_REG(dx1gcr), |
| 139 | DDRPHY_REG_REG(dx2gcr), |
| 140 | DDRPHY_REG_REG(dx3gcr), |
| 141 | }; |
| 142 | |
| 143 | #define DDRPHY_REG_TIMING(x) DDRPHY_REG(x, stm32mp1_ddrphy_timing) |
| 144 | static const struct reg_desc ddrphy_timing[] = { |
| 145 | DDRPHY_REG_TIMING(ptr0), |
| 146 | DDRPHY_REG_TIMING(ptr1), |
| 147 | DDRPHY_REG_TIMING(ptr2), |
| 148 | DDRPHY_REG_TIMING(dtpr0), |
| 149 | DDRPHY_REG_TIMING(dtpr1), |
| 150 | DDRPHY_REG_TIMING(dtpr2), |
| 151 | DDRPHY_REG_TIMING(mr0), |
| 152 | DDRPHY_REG_TIMING(mr1), |
| 153 | DDRPHY_REG_TIMING(mr2), |
| 154 | DDRPHY_REG_TIMING(mr3), |
| 155 | }; |
| 156 | |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 157 | #define DDR_REG_DYN(x) \ |
| 158 | { \ |
| 159 | .name = #x, \ |
| 160 | .offset = offsetof(struct stm32mp1_ddrctl, x), \ |
| 161 | .par_offset = INVALID_OFFSET \ |
| 162 | } |
| 163 | |
| 164 | static const struct reg_desc ddr_dyn[] = { |
| 165 | DDR_REG_DYN(stat), |
| 166 | DDR_REG_DYN(init0), |
| 167 | DDR_REG_DYN(dfimisc), |
| 168 | DDR_REG_DYN(dfistat), |
| 169 | DDR_REG_DYN(swctl), |
| 170 | DDR_REG_DYN(swstat), |
| 171 | DDR_REG_DYN(pctrl_0), |
| 172 | DDR_REG_DYN(pctrl_1), |
| 173 | }; |
| 174 | |
| 175 | #define DDRPHY_REG_DYN(x) \ |
| 176 | { \ |
| 177 | .name = #x, \ |
| 178 | .offset = offsetof(struct stm32mp1_ddrphy, x), \ |
| 179 | .par_offset = INVALID_OFFSET \ |
| 180 | } |
| 181 | |
| 182 | static const struct reg_desc ddrphy_dyn[] = { |
| 183 | DDRPHY_REG_DYN(pir), |
| 184 | DDRPHY_REG_DYN(pgsr), |
| 185 | }; |
| 186 | |
| 187 | enum reg_type { |
| 188 | REG_REG, |
| 189 | REG_TIMING, |
| 190 | REG_PERF, |
| 191 | REG_MAP, |
| 192 | REGPHY_REG, |
| 193 | REGPHY_TIMING, |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 194 | /* |
| 195 | * Dynamic registers => managed in driver or not changed, |
| 196 | * can be dumped in interactive mode. |
| 197 | */ |
| 198 | REG_DYN, |
| 199 | REGPHY_DYN, |
| 200 | REG_TYPE_NB |
| 201 | }; |
| 202 | |
| 203 | enum base_type { |
| 204 | DDR_BASE, |
| 205 | DDRPHY_BASE, |
| 206 | NONE_BASE |
| 207 | }; |
| 208 | |
| 209 | struct ddr_reg_info { |
| 210 | const char *name; |
| 211 | const struct reg_desc *desc; |
| 212 | uint8_t size; |
| 213 | enum base_type base; |
| 214 | }; |
| 215 | |
| 216 | static const struct ddr_reg_info ddr_registers[REG_TYPE_NB] = { |
| 217 | [REG_REG] = { |
Yann Gautier | 1a3fc9f | 2019-01-17 14:35:22 +0100 | [diff] [blame] | 218 | .name = "static", |
| 219 | .desc = ddr_reg, |
| 220 | .size = ARRAY_SIZE(ddr_reg), |
| 221 | .base = DDR_BASE |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 222 | }, |
| 223 | [REG_TIMING] = { |
Yann Gautier | 1a3fc9f | 2019-01-17 14:35:22 +0100 | [diff] [blame] | 224 | .name = "timing", |
| 225 | .desc = ddr_timing, |
| 226 | .size = ARRAY_SIZE(ddr_timing), |
| 227 | .base = DDR_BASE |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 228 | }, |
| 229 | [REG_PERF] = { |
Yann Gautier | 1a3fc9f | 2019-01-17 14:35:22 +0100 | [diff] [blame] | 230 | .name = "perf", |
| 231 | .desc = ddr_perf, |
| 232 | .size = ARRAY_SIZE(ddr_perf), |
| 233 | .base = DDR_BASE |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 234 | }, |
| 235 | [REG_MAP] = { |
Yann Gautier | 1a3fc9f | 2019-01-17 14:35:22 +0100 | [diff] [blame] | 236 | .name = "map", |
| 237 | .desc = ddr_map, |
| 238 | .size = ARRAY_SIZE(ddr_map), |
| 239 | .base = DDR_BASE |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 240 | }, |
| 241 | [REGPHY_REG] = { |
Yann Gautier | 1a3fc9f | 2019-01-17 14:35:22 +0100 | [diff] [blame] | 242 | .name = "static", |
| 243 | .desc = ddrphy_reg, |
| 244 | .size = ARRAY_SIZE(ddrphy_reg), |
| 245 | .base = DDRPHY_BASE |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 246 | }, |
| 247 | [REGPHY_TIMING] = { |
Yann Gautier | 1a3fc9f | 2019-01-17 14:35:22 +0100 | [diff] [blame] | 248 | .name = "timing", |
| 249 | .desc = ddrphy_timing, |
| 250 | .size = ARRAY_SIZE(ddrphy_timing), |
| 251 | .base = DDRPHY_BASE |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 252 | }, |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 253 | [REG_DYN] = { |
Yann Gautier | 1a3fc9f | 2019-01-17 14:35:22 +0100 | [diff] [blame] | 254 | .name = "dyn", |
| 255 | .desc = ddr_dyn, |
| 256 | .size = ARRAY_SIZE(ddr_dyn), |
| 257 | .base = DDR_BASE |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 258 | }, |
| 259 | [REGPHY_DYN] = { |
Yann Gautier | 1a3fc9f | 2019-01-17 14:35:22 +0100 | [diff] [blame] | 260 | .name = "dyn", |
| 261 | .desc = ddrphy_dyn, |
| 262 | .size = ARRAY_SIZE(ddrphy_dyn), |
| 263 | .base = DDRPHY_BASE |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 264 | }, |
| 265 | }; |
| 266 | |
Yann Gautier | 1a3fc9f | 2019-01-17 14:35:22 +0100 | [diff] [blame] | 267 | static uintptr_t get_base_addr(const struct ddr_info *priv, enum base_type base) |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 268 | { |
| 269 | if (base == DDRPHY_BASE) { |
Yann Gautier | 1a3fc9f | 2019-01-17 14:35:22 +0100 | [diff] [blame] | 270 | return (uintptr_t)priv->phy; |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 271 | } else { |
Yann Gautier | 1a3fc9f | 2019-01-17 14:35:22 +0100 | [diff] [blame] | 272 | return (uintptr_t)priv->ctl; |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 273 | } |
| 274 | } |
| 275 | |
| 276 | static void set_reg(const struct ddr_info *priv, |
| 277 | enum reg_type type, |
| 278 | const void *param) |
| 279 | { |
| 280 | unsigned int i; |
Yann Gautier | 1a3fc9f | 2019-01-17 14:35:22 +0100 | [diff] [blame] | 281 | unsigned int value; |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 282 | enum base_type base = ddr_registers[type].base; |
Yann Gautier | 1a3fc9f | 2019-01-17 14:35:22 +0100 | [diff] [blame] | 283 | uintptr_t base_addr = get_base_addr(priv, base); |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 284 | const struct reg_desc *desc = ddr_registers[type].desc; |
| 285 | |
| 286 | VERBOSE("init %s\n", ddr_registers[type].name); |
| 287 | for (i = 0; i < ddr_registers[type].size; i++) { |
Yann Gautier | 1a3fc9f | 2019-01-17 14:35:22 +0100 | [diff] [blame] | 288 | uintptr_t ptr = base_addr + desc[i].offset; |
| 289 | |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 290 | if (desc[i].par_offset == INVALID_OFFSET) { |
| 291 | ERROR("invalid parameter offset for %s", desc[i].name); |
| 292 | panic(); |
| 293 | } else { |
Yann Gautier | 1a3fc9f | 2019-01-17 14:35:22 +0100 | [diff] [blame] | 294 | value = *((uint32_t *)((uintptr_t)param + |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 295 | desc[i].par_offset)); |
Yann Gautier | 1a3fc9f | 2019-01-17 14:35:22 +0100 | [diff] [blame] | 296 | mmio_write_32(ptr, value); |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 297 | } |
| 298 | } |
| 299 | } |
| 300 | |
| 301 | static void stm32mp1_ddrphy_idone_wait(struct stm32mp1_ddrphy *phy) |
| 302 | { |
| 303 | uint32_t pgsr; |
| 304 | int error = 0; |
Yann Gautier | 2299d57 | 2019-02-14 11:14:39 +0100 | [diff] [blame] | 305 | uint64_t timeout = timeout_init_us(TIMEOUT_US_1S); |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 306 | |
| 307 | do { |
Yann Gautier | 1a3fc9f | 2019-01-17 14:35:22 +0100 | [diff] [blame] | 308 | pgsr = mmio_read_32((uintptr_t)&phy->pgsr); |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 309 | |
Yann Gautier | 2299d57 | 2019-02-14 11:14:39 +0100 | [diff] [blame] | 310 | VERBOSE(" > [0x%lx] pgsr = 0x%x &\n", |
| 311 | (uintptr_t)&phy->pgsr, pgsr); |
| 312 | |
| 313 | if (timeout_elapsed(timeout)) { |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 314 | panic(); |
| 315 | } |
Yann Gautier | 2299d57 | 2019-02-14 11:14:39 +0100 | [diff] [blame] | 316 | |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 317 | if ((pgsr & DDRPHYC_PGSR_DTERR) != 0U) { |
| 318 | VERBOSE("DQS Gate Trainig Error\n"); |
| 319 | error++; |
| 320 | } |
Yann Gautier | 2299d57 | 2019-02-14 11:14:39 +0100 | [diff] [blame] | 321 | |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 322 | if ((pgsr & DDRPHYC_PGSR_DTIERR) != 0U) { |
| 323 | VERBOSE("DQS Gate Trainig Intermittent Error\n"); |
| 324 | error++; |
| 325 | } |
Yann Gautier | 2299d57 | 2019-02-14 11:14:39 +0100 | [diff] [blame] | 326 | |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 327 | if ((pgsr & DDRPHYC_PGSR_DFTERR) != 0U) { |
| 328 | VERBOSE("DQS Drift Error\n"); |
| 329 | error++; |
| 330 | } |
Yann Gautier | 2299d57 | 2019-02-14 11:14:39 +0100 | [diff] [blame] | 331 | |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 332 | if ((pgsr & DDRPHYC_PGSR_RVERR) != 0U) { |
| 333 | VERBOSE("Read Valid Training Error\n"); |
| 334 | error++; |
| 335 | } |
Yann Gautier | 2299d57 | 2019-02-14 11:14:39 +0100 | [diff] [blame] | 336 | |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 337 | if ((pgsr & DDRPHYC_PGSR_RVEIRR) != 0U) { |
| 338 | VERBOSE("Read Valid Training Intermittent Error\n"); |
| 339 | error++; |
| 340 | } |
Yann Gautier | 2299d57 | 2019-02-14 11:14:39 +0100 | [diff] [blame] | 341 | } while (((pgsr & DDRPHYC_PGSR_IDONE) == 0U) && (error == 0)); |
Yann Gautier | 1a3fc9f | 2019-01-17 14:35:22 +0100 | [diff] [blame] | 342 | VERBOSE("\n[0x%lx] pgsr = 0x%x\n", |
| 343 | (uintptr_t)&phy->pgsr, pgsr); |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 344 | } |
| 345 | |
| 346 | static void stm32mp1_ddrphy_init(struct stm32mp1_ddrphy *phy, uint32_t pir) |
| 347 | { |
| 348 | uint32_t pir_init = pir | DDRPHYC_PIR_INIT; |
| 349 | |
Yann Gautier | 1a3fc9f | 2019-01-17 14:35:22 +0100 | [diff] [blame] | 350 | mmio_write_32((uintptr_t)&phy->pir, pir_init); |
| 351 | VERBOSE("[0x%lx] pir = 0x%x -> 0x%x\n", |
| 352 | (uintptr_t)&phy->pir, pir_init, |
| 353 | mmio_read_32((uintptr_t)&phy->pir)); |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 354 | |
| 355 | /* Need to wait 10 configuration clock before start polling */ |
| 356 | udelay(10); |
| 357 | |
| 358 | /* Wait DRAM initialization and Gate Training Evaluation complete */ |
| 359 | stm32mp1_ddrphy_idone_wait(phy); |
| 360 | } |
| 361 | |
| 362 | /* Start quasi dynamic register update */ |
| 363 | static void stm32mp1_start_sw_done(struct stm32mp1_ddrctl *ctl) |
| 364 | { |
Yann Gautier | 1a3fc9f | 2019-01-17 14:35:22 +0100 | [diff] [blame] | 365 | mmio_clrbits_32((uintptr_t)&ctl->swctl, DDRCTRL_SWCTL_SW_DONE); |
| 366 | VERBOSE("[0x%lx] swctl = 0x%x\n", |
| 367 | (uintptr_t)&ctl->swctl, mmio_read_32((uintptr_t)&ctl->swctl)); |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 368 | } |
| 369 | |
| 370 | /* Wait quasi dynamic register update */ |
| 371 | static void stm32mp1_wait_sw_done_ack(struct stm32mp1_ddrctl *ctl) |
| 372 | { |
Yann Gautier | 2299d57 | 2019-02-14 11:14:39 +0100 | [diff] [blame] | 373 | uint64_t timeout; |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 374 | uint32_t swstat; |
| 375 | |
Yann Gautier | 1a3fc9f | 2019-01-17 14:35:22 +0100 | [diff] [blame] | 376 | mmio_setbits_32((uintptr_t)&ctl->swctl, DDRCTRL_SWCTL_SW_DONE); |
| 377 | VERBOSE("[0x%lx] swctl = 0x%x\n", |
| 378 | (uintptr_t)&ctl->swctl, mmio_read_32((uintptr_t)&ctl->swctl)); |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 379 | |
Yann Gautier | 2299d57 | 2019-02-14 11:14:39 +0100 | [diff] [blame] | 380 | timeout = timeout_init_us(TIMEOUT_US_1S); |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 381 | do { |
Yann Gautier | 1a3fc9f | 2019-01-17 14:35:22 +0100 | [diff] [blame] | 382 | swstat = mmio_read_32((uintptr_t)&ctl->swstat); |
| 383 | VERBOSE("[0x%lx] swstat = 0x%x ", |
| 384 | (uintptr_t)&ctl->swstat, swstat); |
Yann Gautier | 2299d57 | 2019-02-14 11:14:39 +0100 | [diff] [blame] | 385 | if (timeout_elapsed(timeout)) { |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 386 | panic(); |
| 387 | } |
| 388 | } while ((swstat & DDRCTRL_SWSTAT_SW_DONE_ACK) == 0U); |
| 389 | |
Yann Gautier | 1a3fc9f | 2019-01-17 14:35:22 +0100 | [diff] [blame] | 390 | VERBOSE("[0x%lx] swstat = 0x%x\n", |
| 391 | (uintptr_t)&ctl->swstat, swstat); |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 392 | } |
| 393 | |
| 394 | /* Wait quasi dynamic register update */ |
| 395 | static void stm32mp1_wait_operating_mode(struct ddr_info *priv, uint32_t mode) |
| 396 | { |
Yann Gautier | 2299d57 | 2019-02-14 11:14:39 +0100 | [diff] [blame] | 397 | uint64_t timeout; |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 398 | uint32_t stat; |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 399 | int break_loop = 0; |
| 400 | |
Yann Gautier | 2299d57 | 2019-02-14 11:14:39 +0100 | [diff] [blame] | 401 | timeout = timeout_init_us(TIMEOUT_US_1S); |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 402 | for ( ; ; ) { |
Yann Gautier | 2299d57 | 2019-02-14 11:14:39 +0100 | [diff] [blame] | 403 | uint32_t operating_mode; |
| 404 | uint32_t selref_type; |
| 405 | |
Yann Gautier | 1a3fc9f | 2019-01-17 14:35:22 +0100 | [diff] [blame] | 406 | stat = mmio_read_32((uintptr_t)&priv->ctl->stat); |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 407 | operating_mode = stat & DDRCTRL_STAT_OPERATING_MODE_MASK; |
| 408 | selref_type = stat & DDRCTRL_STAT_SELFREF_TYPE_MASK; |
Yann Gautier | 1a3fc9f | 2019-01-17 14:35:22 +0100 | [diff] [blame] | 409 | VERBOSE("[0x%lx] stat = 0x%x\n", |
| 410 | (uintptr_t)&priv->ctl->stat, stat); |
Yann Gautier | 2299d57 | 2019-02-14 11:14:39 +0100 | [diff] [blame] | 411 | if (timeout_elapsed(timeout)) { |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 412 | panic(); |
| 413 | } |
| 414 | |
| 415 | if (mode == DDRCTRL_STAT_OPERATING_MODE_SR) { |
| 416 | /* |
| 417 | * Self-refresh due to software |
| 418 | * => checking also STAT.selfref_type. |
| 419 | */ |
| 420 | if ((operating_mode == |
| 421 | DDRCTRL_STAT_OPERATING_MODE_SR) && |
| 422 | (selref_type == DDRCTRL_STAT_SELFREF_TYPE_SR)) { |
| 423 | break_loop = 1; |
| 424 | } |
| 425 | } else if (operating_mode == mode) { |
| 426 | break_loop = 1; |
| 427 | } else if ((mode == DDRCTRL_STAT_OPERATING_MODE_NORMAL) && |
| 428 | (operating_mode == DDRCTRL_STAT_OPERATING_MODE_SR) && |
| 429 | (selref_type == DDRCTRL_STAT_SELFREF_TYPE_ASR)) { |
| 430 | /* Normal mode: handle also automatic self refresh */ |
| 431 | break_loop = 1; |
| 432 | } |
| 433 | |
| 434 | if (break_loop == 1) { |
| 435 | break; |
| 436 | } |
| 437 | } |
| 438 | |
Yann Gautier | 1a3fc9f | 2019-01-17 14:35:22 +0100 | [diff] [blame] | 439 | VERBOSE("[0x%lx] stat = 0x%x\n", |
| 440 | (uintptr_t)&priv->ctl->stat, stat); |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 441 | } |
| 442 | |
| 443 | /* Mode Register Writes (MRW or MRS) */ |
| 444 | static void stm32mp1_mode_register_write(struct ddr_info *priv, uint8_t addr, |
| 445 | uint32_t data) |
| 446 | { |
| 447 | uint32_t mrctrl0; |
| 448 | |
| 449 | VERBOSE("MRS: %d = %x\n", addr, data); |
| 450 | |
| 451 | /* |
| 452 | * 1. Poll MRSTAT.mr_wr_busy until it is '0'. |
| 453 | * This checks that there is no outstanding MR transaction. |
| 454 | * No write should be performed to MRCTRL0 and MRCTRL1 |
| 455 | * if MRSTAT.mr_wr_busy = 1. |
| 456 | */ |
Yann Gautier | 1a3fc9f | 2019-01-17 14:35:22 +0100 | [diff] [blame] | 457 | while ((mmio_read_32((uintptr_t)&priv->ctl->mrstat) & |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 458 | DDRCTRL_MRSTAT_MR_WR_BUSY) != 0U) { |
| 459 | ; |
| 460 | } |
| 461 | |
| 462 | /* |
| 463 | * 2. Write the MRCTRL0.mr_type, MRCTRL0.mr_addr, MRCTRL0.mr_rank |
| 464 | * and (for MRWs) MRCTRL1.mr_data to define the MR transaction. |
| 465 | */ |
| 466 | mrctrl0 = DDRCTRL_MRCTRL0_MR_TYPE_WRITE | |
| 467 | DDRCTRL_MRCTRL0_MR_RANK_ALL | |
| 468 | (((uint32_t)addr << DDRCTRL_MRCTRL0_MR_ADDR_SHIFT) & |
| 469 | DDRCTRL_MRCTRL0_MR_ADDR_MASK); |
Yann Gautier | 1a3fc9f | 2019-01-17 14:35:22 +0100 | [diff] [blame] | 470 | mmio_write_32((uintptr_t)&priv->ctl->mrctrl0, mrctrl0); |
| 471 | VERBOSE("[0x%lx] mrctrl0 = 0x%x (0x%x)\n", |
| 472 | (uintptr_t)&priv->ctl->mrctrl0, |
| 473 | mmio_read_32((uintptr_t)&priv->ctl->mrctrl0), mrctrl0); |
| 474 | mmio_write_32((uintptr_t)&priv->ctl->mrctrl1, data); |
| 475 | VERBOSE("[0x%lx] mrctrl1 = 0x%x\n", |
| 476 | (uintptr_t)&priv->ctl->mrctrl1, |
| 477 | mmio_read_32((uintptr_t)&priv->ctl->mrctrl1)); |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 478 | |
| 479 | /* |
| 480 | * 3. In a separate APB transaction, write the MRCTRL0.mr_wr to 1. This |
| 481 | * bit is self-clearing, and triggers the MR transaction. |
| 482 | * The uMCTL2 then asserts the MRSTAT.mr_wr_busy while it performs |
| 483 | * the MR transaction to SDRAM, and no further access can be |
| 484 | * initiated until it is deasserted. |
| 485 | */ |
| 486 | mrctrl0 |= DDRCTRL_MRCTRL0_MR_WR; |
Yann Gautier | 1a3fc9f | 2019-01-17 14:35:22 +0100 | [diff] [blame] | 487 | mmio_write_32((uintptr_t)&priv->ctl->mrctrl0, mrctrl0); |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 488 | |
Yann Gautier | 1a3fc9f | 2019-01-17 14:35:22 +0100 | [diff] [blame] | 489 | while ((mmio_read_32((uintptr_t)&priv->ctl->mrstat) & |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 490 | DDRCTRL_MRSTAT_MR_WR_BUSY) != 0U) { |
| 491 | ; |
| 492 | } |
| 493 | |
Yann Gautier | 1a3fc9f | 2019-01-17 14:35:22 +0100 | [diff] [blame] | 494 | VERBOSE("[0x%lx] mrctrl0 = 0x%x\n", |
| 495 | (uintptr_t)&priv->ctl->mrctrl0, mrctrl0); |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 496 | } |
| 497 | |
| 498 | /* Switch DDR3 from DLL-on to DLL-off */ |
| 499 | static void stm32mp1_ddr3_dll_off(struct ddr_info *priv) |
| 500 | { |
Yann Gautier | 1a3fc9f | 2019-01-17 14:35:22 +0100 | [diff] [blame] | 501 | uint32_t mr1 = mmio_read_32((uintptr_t)&priv->phy->mr1); |
| 502 | uint32_t mr2 = mmio_read_32((uintptr_t)&priv->phy->mr2); |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 503 | uint32_t dbgcam; |
| 504 | |
| 505 | VERBOSE("mr1: 0x%x\n", mr1); |
| 506 | VERBOSE("mr2: 0x%x\n", mr2); |
| 507 | |
| 508 | /* |
| 509 | * 1. Set the DBG1.dis_hif = 1. |
| 510 | * This prevents further reads/writes being received on the HIF. |
| 511 | */ |
Yann Gautier | 1a3fc9f | 2019-01-17 14:35:22 +0100 | [diff] [blame] | 512 | mmio_setbits_32((uintptr_t)&priv->ctl->dbg1, DDRCTRL_DBG1_DIS_HIF); |
| 513 | VERBOSE("[0x%lx] dbg1 = 0x%x\n", |
| 514 | (uintptr_t)&priv->ctl->dbg1, |
| 515 | mmio_read_32((uintptr_t)&priv->ctl->dbg1)); |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 516 | |
| 517 | /* |
| 518 | * 2. Ensure all commands have been flushed from the uMCTL2 by polling |
| 519 | * DBGCAM.wr_data_pipeline_empty = 1, |
| 520 | * DBGCAM.rd_data_pipeline_empty = 1, |
| 521 | * DBGCAM.dbg_wr_q_depth = 0 , |
| 522 | * DBGCAM.dbg_lpr_q_depth = 0, and |
| 523 | * DBGCAM.dbg_hpr_q_depth = 0. |
| 524 | */ |
| 525 | do { |
Yann Gautier | 1a3fc9f | 2019-01-17 14:35:22 +0100 | [diff] [blame] | 526 | dbgcam = mmio_read_32((uintptr_t)&priv->ctl->dbgcam); |
| 527 | VERBOSE("[0x%lx] dbgcam = 0x%x\n", |
| 528 | (uintptr_t)&priv->ctl->dbgcam, dbgcam); |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 529 | } while ((((dbgcam & DDRCTRL_DBGCAM_DATA_PIPELINE_EMPTY) == |
| 530 | DDRCTRL_DBGCAM_DATA_PIPELINE_EMPTY)) && |
| 531 | ((dbgcam & DDRCTRL_DBGCAM_DBG_Q_DEPTH) == 0U)); |
| 532 | |
| 533 | /* |
| 534 | * 3. Perform an MRS command (using MRCTRL0 and MRCTRL1 registers) |
| 535 | * to disable RTT_NOM: |
| 536 | * a. DDR3: Write to MR1[9], MR1[6] and MR1[2] |
| 537 | * b. DDR4: Write to MR1[10:8] |
| 538 | */ |
| 539 | mr1 &= ~(BIT(9) | BIT(6) | BIT(2)); |
| 540 | stm32mp1_mode_register_write(priv, 1, mr1); |
| 541 | |
| 542 | /* |
| 543 | * 4. For DDR4 only: Perform an MRS command |
| 544 | * (using MRCTRL0 and MRCTRL1 registers) to write to MR5[8:6] |
| 545 | * to disable RTT_PARK |
| 546 | */ |
| 547 | |
| 548 | /* |
| 549 | * 5. Perform an MRS command (using MRCTRL0 and MRCTRL1 registers) |
| 550 | * to write to MR2[10:9], to disable RTT_WR |
| 551 | * (and therefore disable dynamic ODT). |
| 552 | * This applies for both DDR3 and DDR4. |
| 553 | */ |
| 554 | mr2 &= ~GENMASK(10, 9); |
| 555 | stm32mp1_mode_register_write(priv, 2, mr2); |
| 556 | |
| 557 | /* |
| 558 | * 6. Perform an MRS command (using MRCTRL0 and MRCTRL1 registers) |
| 559 | * to disable the DLL. The timing of this MRS is automatically |
| 560 | * handled by the uMCTL2. |
| 561 | * a. DDR3: Write to MR1[0] |
| 562 | * b. DDR4: Write to MR1[0] |
| 563 | */ |
| 564 | mr1 |= BIT(0); |
| 565 | stm32mp1_mode_register_write(priv, 1, mr1); |
| 566 | |
| 567 | /* |
| 568 | * 7. Put the SDRAM into self-refresh mode by setting |
| 569 | * PWRCTL.selfref_sw = 1, and polling STAT.operating_mode to ensure |
| 570 | * the DDRC has entered self-refresh. |
| 571 | */ |
Yann Gautier | 1a3fc9f | 2019-01-17 14:35:22 +0100 | [diff] [blame] | 572 | mmio_setbits_32((uintptr_t)&priv->ctl->pwrctl, |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 573 | DDRCTRL_PWRCTL_SELFREF_SW); |
Yann Gautier | 1a3fc9f | 2019-01-17 14:35:22 +0100 | [diff] [blame] | 574 | VERBOSE("[0x%lx] pwrctl = 0x%x\n", |
| 575 | (uintptr_t)&priv->ctl->pwrctl, |
| 576 | mmio_read_32((uintptr_t)&priv->ctl->pwrctl)); |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 577 | |
| 578 | /* |
| 579 | * 8. Wait until STAT.operating_mode[1:0]==11 indicating that the |
| 580 | * DWC_ddr_umctl2 core is in self-refresh mode. |
| 581 | * Ensure transition to self-refresh was due to software |
| 582 | * by checking that STAT.selfref_type[1:0]=2. |
| 583 | */ |
| 584 | stm32mp1_wait_operating_mode(priv, DDRCTRL_STAT_OPERATING_MODE_SR); |
| 585 | |
| 586 | /* |
| 587 | * 9. Set the MSTR.dll_off_mode = 1. |
| 588 | * warning: MSTR.dll_off_mode is a quasi-dynamic type 2 field |
| 589 | */ |
| 590 | stm32mp1_start_sw_done(priv->ctl); |
| 591 | |
Yann Gautier | 1a3fc9f | 2019-01-17 14:35:22 +0100 | [diff] [blame] | 592 | mmio_setbits_32((uintptr_t)&priv->ctl->mstr, DDRCTRL_MSTR_DLL_OFF_MODE); |
| 593 | VERBOSE("[0x%lx] mstr = 0x%x\n", |
| 594 | (uintptr_t)&priv->ctl->mstr, |
| 595 | mmio_read_32((uintptr_t)&priv->ctl->mstr)); |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 596 | |
| 597 | stm32mp1_wait_sw_done_ack(priv->ctl); |
| 598 | |
| 599 | /* 10. Change the clock frequency to the desired value. */ |
| 600 | |
| 601 | /* |
| 602 | * 11. Update any registers which may be required to change for the new |
| 603 | * frequency. This includes static and dynamic registers. |
| 604 | * This includes both uMCTL2 registers and PHY registers. |
| 605 | */ |
| 606 | |
| 607 | /* Change Bypass Mode Frequency Range */ |
Yann Gautier | a205a5c | 2021-08-30 15:06:54 +0200 | [diff] [blame] | 608 | if (clk_get_rate(DDRPHYC) < 100000000U) { |
Yann Gautier | 1a3fc9f | 2019-01-17 14:35:22 +0100 | [diff] [blame] | 609 | mmio_clrbits_32((uintptr_t)&priv->phy->dllgcr, |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 610 | DDRPHYC_DLLGCR_BPS200); |
| 611 | } else { |
Yann Gautier | 1a3fc9f | 2019-01-17 14:35:22 +0100 | [diff] [blame] | 612 | mmio_setbits_32((uintptr_t)&priv->phy->dllgcr, |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 613 | DDRPHYC_DLLGCR_BPS200); |
| 614 | } |
| 615 | |
Yann Gautier | 1a3fc9f | 2019-01-17 14:35:22 +0100 | [diff] [blame] | 616 | mmio_setbits_32((uintptr_t)&priv->phy->acdllcr, DDRPHYC_ACDLLCR_DLLDIS); |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 617 | |
Yann Gautier | 1a3fc9f | 2019-01-17 14:35:22 +0100 | [diff] [blame] | 618 | mmio_setbits_32((uintptr_t)&priv->phy->dx0dllcr, |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 619 | DDRPHYC_DXNDLLCR_DLLDIS); |
Yann Gautier | 1a3fc9f | 2019-01-17 14:35:22 +0100 | [diff] [blame] | 620 | mmio_setbits_32((uintptr_t)&priv->phy->dx1dllcr, |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 621 | DDRPHYC_DXNDLLCR_DLLDIS); |
Yann Gautier | 1a3fc9f | 2019-01-17 14:35:22 +0100 | [diff] [blame] | 622 | mmio_setbits_32((uintptr_t)&priv->phy->dx2dllcr, |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 623 | DDRPHYC_DXNDLLCR_DLLDIS); |
Yann Gautier | 1a3fc9f | 2019-01-17 14:35:22 +0100 | [diff] [blame] | 624 | mmio_setbits_32((uintptr_t)&priv->phy->dx3dllcr, |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 625 | DDRPHYC_DXNDLLCR_DLLDIS); |
| 626 | |
| 627 | /* 12. Exit the self-refresh state by setting PWRCTL.selfref_sw = 0. */ |
Yann Gautier | 1a3fc9f | 2019-01-17 14:35:22 +0100 | [diff] [blame] | 628 | mmio_clrbits_32((uintptr_t)&priv->ctl->pwrctl, |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 629 | DDRCTRL_PWRCTL_SELFREF_SW); |
| 630 | stm32mp1_wait_operating_mode(priv, DDRCTRL_STAT_OPERATING_MODE_NORMAL); |
| 631 | |
| 632 | /* |
| 633 | * 13. If ZQCTL0.dis_srx_zqcl = 0, the uMCTL2 performs a ZQCL command |
| 634 | * at this point. |
| 635 | */ |
| 636 | |
| 637 | /* |
| 638 | * 14. Perform MRS commands as required to re-program timing registers |
| 639 | * in the SDRAM for the new frequency |
| 640 | * (in particular, CL, CWL and WR may need to be changed). |
| 641 | */ |
| 642 | |
| 643 | /* 15. Write DBG1.dis_hif = 0 to re-enable reads and writes. */ |
Yann Gautier | 1a3fc9f | 2019-01-17 14:35:22 +0100 | [diff] [blame] | 644 | mmio_clrbits_32((uintptr_t)&priv->ctl->dbg1, DDRCTRL_DBG1_DIS_HIF); |
| 645 | VERBOSE("[0x%lx] dbg1 = 0x%x\n", |
| 646 | (uintptr_t)&priv->ctl->dbg1, |
| 647 | mmio_read_32((uintptr_t)&priv->ctl->dbg1)); |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 648 | } |
| 649 | |
| 650 | static void stm32mp1_refresh_disable(struct stm32mp1_ddrctl *ctl) |
| 651 | { |
| 652 | stm32mp1_start_sw_done(ctl); |
| 653 | /* Quasi-dynamic register update*/ |
Yann Gautier | 1a3fc9f | 2019-01-17 14:35:22 +0100 | [diff] [blame] | 654 | mmio_setbits_32((uintptr_t)&ctl->rfshctl3, |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 655 | DDRCTRL_RFSHCTL3_DIS_AUTO_REFRESH); |
Yann Gautier | 1a3fc9f | 2019-01-17 14:35:22 +0100 | [diff] [blame] | 656 | mmio_clrbits_32((uintptr_t)&ctl->pwrctl, DDRCTRL_PWRCTL_POWERDOWN_EN); |
| 657 | mmio_clrbits_32((uintptr_t)&ctl->dfimisc, |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 658 | DDRCTRL_DFIMISC_DFI_INIT_COMPLETE_EN); |
| 659 | stm32mp1_wait_sw_done_ack(ctl); |
| 660 | } |
| 661 | |
| 662 | static void stm32mp1_refresh_restore(struct stm32mp1_ddrctl *ctl, |
| 663 | uint32_t rfshctl3, uint32_t pwrctl) |
| 664 | { |
| 665 | stm32mp1_start_sw_done(ctl); |
| 666 | if ((rfshctl3 & DDRCTRL_RFSHCTL3_DIS_AUTO_REFRESH) == 0U) { |
Yann Gautier | 1a3fc9f | 2019-01-17 14:35:22 +0100 | [diff] [blame] | 667 | mmio_clrbits_32((uintptr_t)&ctl->rfshctl3, |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 668 | DDRCTRL_RFSHCTL3_DIS_AUTO_REFRESH); |
| 669 | } |
| 670 | if ((pwrctl & DDRCTRL_PWRCTL_POWERDOWN_EN) != 0U) { |
Yann Gautier | 1a3fc9f | 2019-01-17 14:35:22 +0100 | [diff] [blame] | 671 | mmio_setbits_32((uintptr_t)&ctl->pwrctl, |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 672 | DDRCTRL_PWRCTL_POWERDOWN_EN); |
| 673 | } |
Yann Gautier | 1a3fc9f | 2019-01-17 14:35:22 +0100 | [diff] [blame] | 674 | mmio_setbits_32((uintptr_t)&ctl->dfimisc, |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 675 | DDRCTRL_DFIMISC_DFI_INIT_COMPLETE_EN); |
| 676 | stm32mp1_wait_sw_done_ack(ctl); |
| 677 | } |
| 678 | |
| 679 | static int board_ddr_power_init(enum ddr_type ddr_type) |
| 680 | { |
Yann Gautier | f3928f6 | 2019-02-14 11:15:03 +0100 | [diff] [blame] | 681 | if (dt_pmic_status() > 0) { |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 682 | return pmic_ddr_power_init(ddr_type); |
| 683 | } |
| 684 | |
| 685 | return 0; |
| 686 | } |
| 687 | |
| 688 | void stm32mp1_ddr_init(struct ddr_info *priv, |
| 689 | struct stm32mp1_ddr_config *config) |
| 690 | { |
| 691 | uint32_t pir; |
Yann Gautier | 1a3fc9f | 2019-01-17 14:35:22 +0100 | [diff] [blame] | 692 | int ret = -EINVAL; |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 693 | |
| 694 | if ((config->c_reg.mstr & DDRCTRL_MSTR_DDR3) != 0U) { |
| 695 | ret = board_ddr_power_init(STM32MP_DDR3); |
Yann Gautier | 1a3fc9f | 2019-01-17 14:35:22 +0100 | [diff] [blame] | 696 | } else if ((config->c_reg.mstr & DDRCTRL_MSTR_LPDDR2) != 0U) { |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 697 | ret = board_ddr_power_init(STM32MP_LPDDR2); |
Yann Gautier | 917a00c | 2019-04-16 16:20:58 +0200 | [diff] [blame] | 698 | } else if ((config->c_reg.mstr & DDRCTRL_MSTR_LPDDR3) != 0U) { |
| 699 | ret = board_ddr_power_init(STM32MP_LPDDR3); |
Yann Gautier | 1a3fc9f | 2019-01-17 14:35:22 +0100 | [diff] [blame] | 700 | } else { |
| 701 | ERROR("DDR type not supported\n"); |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 702 | } |
| 703 | |
| 704 | if (ret != 0) { |
| 705 | panic(); |
| 706 | } |
| 707 | |
| 708 | VERBOSE("name = %s\n", config->info.name); |
Yann Gautier | 634591d | 2021-09-07 09:07:35 +0200 | [diff] [blame] | 709 | VERBOSE("speed = %u kHz\n", config->info.speed); |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 710 | VERBOSE("size = 0x%x\n", config->info.size); |
| 711 | |
| 712 | /* DDR INIT SEQUENCE */ |
| 713 | |
| 714 | /* |
| 715 | * 1. Program the DWC_ddr_umctl2 registers |
| 716 | * nota: check DFIMISC.dfi_init_complete = 0 |
| 717 | */ |
| 718 | |
| 719 | /* 1.1 RESETS: presetn, core_ddrc_rstn, aresetn */ |
| 720 | mmio_setbits_32(priv->rcc + RCC_DDRITFCR, RCC_DDRITFCR_DDRCAPBRST); |
| 721 | mmio_setbits_32(priv->rcc + RCC_DDRITFCR, RCC_DDRITFCR_DDRCAXIRST); |
| 722 | mmio_setbits_32(priv->rcc + RCC_DDRITFCR, RCC_DDRITFCR_DDRCORERST); |
| 723 | mmio_setbits_32(priv->rcc + RCC_DDRITFCR, RCC_DDRITFCR_DPHYAPBRST); |
| 724 | mmio_setbits_32(priv->rcc + RCC_DDRITFCR, RCC_DDRITFCR_DPHYRST); |
| 725 | mmio_setbits_32(priv->rcc + RCC_DDRITFCR, RCC_DDRITFCR_DPHYCTLRST); |
| 726 | |
| 727 | /* 1.2. start CLOCK */ |
| 728 | if (stm32mp1_ddr_clk_enable(priv, config->info.speed) != 0) { |
| 729 | panic(); |
| 730 | } |
| 731 | |
| 732 | /* 1.3. deassert reset */ |
| 733 | /* De-assert PHY rstn and ctl_rstn via DPHYRST and DPHYCTLRST. */ |
| 734 | mmio_clrbits_32(priv->rcc + RCC_DDRITFCR, RCC_DDRITFCR_DPHYRST); |
| 735 | mmio_clrbits_32(priv->rcc + RCC_DDRITFCR, RCC_DDRITFCR_DPHYCTLRST); |
| 736 | /* |
| 737 | * De-assert presetn once the clocks are active |
| 738 | * and stable via DDRCAPBRST bit. |
| 739 | */ |
| 740 | mmio_clrbits_32(priv->rcc + RCC_DDRITFCR, RCC_DDRITFCR_DDRCAPBRST); |
| 741 | |
| 742 | /* 1.4. wait 128 cycles to permit initialization of end logic */ |
| 743 | udelay(2); |
| 744 | /* For PCLK = 133MHz => 1 us is enough, 2 to allow lower frequency */ |
| 745 | |
| 746 | /* 1.5. initialize registers ddr_umctl2 */ |
| 747 | /* Stop uMCTL2 before PHY is ready */ |
Yann Gautier | 1a3fc9f | 2019-01-17 14:35:22 +0100 | [diff] [blame] | 748 | mmio_clrbits_32((uintptr_t)&priv->ctl->dfimisc, |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 749 | DDRCTRL_DFIMISC_DFI_INIT_COMPLETE_EN); |
Yann Gautier | 1a3fc9f | 2019-01-17 14:35:22 +0100 | [diff] [blame] | 750 | VERBOSE("[0x%lx] dfimisc = 0x%x\n", |
| 751 | (uintptr_t)&priv->ctl->dfimisc, |
| 752 | mmio_read_32((uintptr_t)&priv->ctl->dfimisc)); |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 753 | |
| 754 | set_reg(priv, REG_REG, &config->c_reg); |
| 755 | |
| 756 | /* DDR3 = don't set DLLOFF for init mode */ |
| 757 | if ((config->c_reg.mstr & |
| 758 | (DDRCTRL_MSTR_DDR3 | DDRCTRL_MSTR_DLL_OFF_MODE)) |
| 759 | == (DDRCTRL_MSTR_DDR3 | DDRCTRL_MSTR_DLL_OFF_MODE)) { |
| 760 | VERBOSE("deactivate DLL OFF in mstr\n"); |
Yann Gautier | 1a3fc9f | 2019-01-17 14:35:22 +0100 | [diff] [blame] | 761 | mmio_clrbits_32((uintptr_t)&priv->ctl->mstr, |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 762 | DDRCTRL_MSTR_DLL_OFF_MODE); |
Yann Gautier | 1a3fc9f | 2019-01-17 14:35:22 +0100 | [diff] [blame] | 763 | VERBOSE("[0x%lx] mstr = 0x%x\n", |
| 764 | (uintptr_t)&priv->ctl->mstr, |
| 765 | mmio_read_32((uintptr_t)&priv->ctl->mstr)); |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 766 | } |
| 767 | |
| 768 | set_reg(priv, REG_TIMING, &config->c_timing); |
| 769 | set_reg(priv, REG_MAP, &config->c_map); |
| 770 | |
| 771 | /* Skip CTRL init, SDRAM init is done by PHY PUBL */ |
Yann Gautier | 1a3fc9f | 2019-01-17 14:35:22 +0100 | [diff] [blame] | 772 | mmio_clrsetbits_32((uintptr_t)&priv->ctl->init0, |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 773 | DDRCTRL_INIT0_SKIP_DRAM_INIT_MASK, |
| 774 | DDRCTRL_INIT0_SKIP_DRAM_INIT_NORMAL); |
Yann Gautier | 1a3fc9f | 2019-01-17 14:35:22 +0100 | [diff] [blame] | 775 | VERBOSE("[0x%lx] init0 = 0x%x\n", |
| 776 | (uintptr_t)&priv->ctl->init0, |
| 777 | mmio_read_32((uintptr_t)&priv->ctl->init0)); |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 778 | |
| 779 | set_reg(priv, REG_PERF, &config->c_perf); |
| 780 | |
| 781 | /* 2. deassert reset signal core_ddrc_rstn, aresetn and presetn */ |
| 782 | mmio_clrbits_32(priv->rcc + RCC_DDRITFCR, RCC_DDRITFCR_DDRCORERST); |
| 783 | mmio_clrbits_32(priv->rcc + RCC_DDRITFCR, RCC_DDRITFCR_DDRCAXIRST); |
| 784 | mmio_clrbits_32(priv->rcc + RCC_DDRITFCR, RCC_DDRITFCR_DPHYAPBRST); |
| 785 | |
| 786 | /* |
| 787 | * 3. start PHY init by accessing relevant PUBL registers |
| 788 | * (DXGCR, DCR, PTR*, MR*, DTPR*) |
| 789 | */ |
| 790 | set_reg(priv, REGPHY_REG, &config->p_reg); |
| 791 | set_reg(priv, REGPHY_TIMING, &config->p_timing); |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 792 | |
| 793 | /* DDR3 = don't set DLLOFF for init mode */ |
| 794 | if ((config->c_reg.mstr & |
| 795 | (DDRCTRL_MSTR_DDR3 | DDRCTRL_MSTR_DLL_OFF_MODE)) |
| 796 | == (DDRCTRL_MSTR_DDR3 | DDRCTRL_MSTR_DLL_OFF_MODE)) { |
| 797 | VERBOSE("deactivate DLL OFF in mr1\n"); |
Yann Gautier | 1a3fc9f | 2019-01-17 14:35:22 +0100 | [diff] [blame] | 798 | mmio_clrbits_32((uintptr_t)&priv->phy->mr1, BIT(0)); |
| 799 | VERBOSE("[0x%lx] mr1 = 0x%x\n", |
| 800 | (uintptr_t)&priv->phy->mr1, |
| 801 | mmio_read_32((uintptr_t)&priv->phy->mr1)); |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 802 | } |
| 803 | |
| 804 | /* |
| 805 | * 4. Monitor PHY init status by polling PUBL register PGSR.IDONE |
| 806 | * Perform DDR PHY DRAM initialization and Gate Training Evaluation |
| 807 | */ |
| 808 | stm32mp1_ddrphy_idone_wait(priv->phy); |
| 809 | |
| 810 | /* |
| 811 | * 5. Indicate to PUBL that controller performs SDRAM initialization |
| 812 | * by setting PIR.INIT and PIR CTLDINIT and pool PGSR.IDONE |
| 813 | * DRAM init is done by PHY, init0.skip_dram.init = 1 |
| 814 | */ |
| 815 | |
| 816 | pir = DDRPHYC_PIR_DLLSRST | DDRPHYC_PIR_DLLLOCK | DDRPHYC_PIR_ZCAL | |
| 817 | DDRPHYC_PIR_ITMSRST | DDRPHYC_PIR_DRAMINIT | DDRPHYC_PIR_ICPC; |
| 818 | |
| 819 | if ((config->c_reg.mstr & DDRCTRL_MSTR_DDR3) != 0U) { |
| 820 | pir |= DDRPHYC_PIR_DRAMRST; /* Only for DDR3 */ |
| 821 | } |
| 822 | |
| 823 | stm32mp1_ddrphy_init(priv->phy, pir); |
| 824 | |
| 825 | /* |
| 826 | * 6. SET DFIMISC.dfi_init_complete_en to 1 |
| 827 | * Enable quasi-dynamic register programming. |
| 828 | */ |
| 829 | stm32mp1_start_sw_done(priv->ctl); |
| 830 | |
Yann Gautier | 1a3fc9f | 2019-01-17 14:35:22 +0100 | [diff] [blame] | 831 | mmio_setbits_32((uintptr_t)&priv->ctl->dfimisc, |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 832 | DDRCTRL_DFIMISC_DFI_INIT_COMPLETE_EN); |
Yann Gautier | 1a3fc9f | 2019-01-17 14:35:22 +0100 | [diff] [blame] | 833 | VERBOSE("[0x%lx] dfimisc = 0x%x\n", |
| 834 | (uintptr_t)&priv->ctl->dfimisc, |
| 835 | mmio_read_32((uintptr_t)&priv->ctl->dfimisc)); |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 836 | |
| 837 | stm32mp1_wait_sw_done_ack(priv->ctl); |
| 838 | |
| 839 | /* |
| 840 | * 7. Wait for DWC_ddr_umctl2 to move to normal operation mode |
| 841 | * by monitoring STAT.operating_mode signal |
| 842 | */ |
| 843 | |
| 844 | /* Wait uMCTL2 ready */ |
| 845 | stm32mp1_wait_operating_mode(priv, DDRCTRL_STAT_OPERATING_MODE_NORMAL); |
| 846 | |
| 847 | /* Switch to DLL OFF mode */ |
| 848 | if ((config->c_reg.mstr & DDRCTRL_MSTR_DLL_OFF_MODE) != 0U) { |
| 849 | stm32mp1_ddr3_dll_off(priv); |
| 850 | } |
| 851 | |
| 852 | VERBOSE("DDR DQS training : "); |
| 853 | |
| 854 | /* |
| 855 | * 8. Disable Auto refresh and power down by setting |
| 856 | * - RFSHCTL3.dis_au_refresh = 1 |
| 857 | * - PWRCTL.powerdown_en = 0 |
| 858 | * - DFIMISC.dfiinit_complete_en = 0 |
| 859 | */ |
| 860 | stm32mp1_refresh_disable(priv->ctl); |
| 861 | |
| 862 | /* |
| 863 | * 9. Program PUBL PGCR to enable refresh during training |
| 864 | * and rank to train |
| 865 | * not done => keep the programed value in PGCR |
| 866 | */ |
| 867 | |
| 868 | /* |
| 869 | * 10. configure PUBL PIR register to specify which training step |
| 870 | * to run |
Nicolas Le Bayon | e22424a | 2021-09-10 12:03:38 +0200 | [diff] [blame^] | 871 | * RVTRN is executed only on LPDDR2/LPDDR3 |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 872 | */ |
Nicolas Le Bayon | e22424a | 2021-09-10 12:03:38 +0200 | [diff] [blame^] | 873 | pir = DDRPHYC_PIR_QSTRN; |
| 874 | if ((config->c_reg.mstr & DDRCTRL_MSTR_DDR3) == 0U) { |
| 875 | pir |= DDRPHYC_PIR_RVTRN; |
| 876 | } |
| 877 | |
| 878 | stm32mp1_ddrphy_init(priv->phy, pir); |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 879 | |
| 880 | /* 11. monitor PUB PGSR.IDONE to poll cpmpletion of training sequence */ |
| 881 | stm32mp1_ddrphy_idone_wait(priv->phy); |
| 882 | |
| 883 | /* |
| 884 | * 12. set back registers in step 8 to the orginal values if desidered |
| 885 | */ |
| 886 | stm32mp1_refresh_restore(priv->ctl, config->c_reg.rfshctl3, |
| 887 | config->c_reg.pwrctl); |
| 888 | |
| 889 | /* Enable uMCTL2 AXI port 0 */ |
Yann Gautier | 1a3fc9f | 2019-01-17 14:35:22 +0100 | [diff] [blame] | 890 | mmio_setbits_32((uintptr_t)&priv->ctl->pctrl_0, |
| 891 | DDRCTRL_PCTRL_N_PORT_EN); |
| 892 | VERBOSE("[0x%lx] pctrl_0 = 0x%x\n", |
| 893 | (uintptr_t)&priv->ctl->pctrl_0, |
| 894 | mmio_read_32((uintptr_t)&priv->ctl->pctrl_0)); |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 895 | |
| 896 | /* Enable uMCTL2 AXI port 1 */ |
Yann Gautier | 1a3fc9f | 2019-01-17 14:35:22 +0100 | [diff] [blame] | 897 | mmio_setbits_32((uintptr_t)&priv->ctl->pctrl_1, |
| 898 | DDRCTRL_PCTRL_N_PORT_EN); |
| 899 | VERBOSE("[0x%lx] pctrl_1 = 0x%x\n", |
| 900 | (uintptr_t)&priv->ctl->pctrl_1, |
| 901 | mmio_read_32((uintptr_t)&priv->ctl->pctrl_1)); |
Yann Gautier | caf575b | 2018-07-24 17:18:19 +0200 | [diff] [blame] | 902 | } |