1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Copyright (C) STMicroelectronics 2018 - All Rights Reserved 4 * Author: Olivier Bideau <olivier.bideau@st.com> for STMicroelectronics. 5 * Author: Gabriel Fernandez <gabriel.fernandez@st.com> for STMicroelectronics. 6 */ 7 8 #include <linux/clk.h> 9 #include <linux/clk-provider.h> 10 #include <linux/delay.h> 11 #include <linux/err.h> 12 #include <linux/io.h> 13 #include <linux/of.h> 14 #include <linux/of_address.h> 15 #include <linux/slab.h> 16 #include <linux/spinlock.h> 17 18 #include <dt-bindings/clock/stm32mp1-clks.h> 19 20 static DEFINE_SPINLOCK(rlock); 21 22 #define RCC_OCENSETR 0x0C 23 #define RCC_HSICFGR 0x18 24 #define RCC_RDLSICR 0x144 25 #define RCC_PLL1CR 0x80 26 #define RCC_PLL1CFGR1 0x84 27 #define RCC_PLL1CFGR2 0x88 28 #define RCC_PLL2CR 0x94 29 #define RCC_PLL2CFGR1 0x98 30 #define RCC_PLL2CFGR2 0x9C 31 #define RCC_PLL3CR 0x880 32 #define RCC_PLL3CFGR1 0x884 33 #define RCC_PLL3CFGR2 0x888 34 #define RCC_PLL4CR 0x894 35 #define RCC_PLL4CFGR1 0x898 36 #define RCC_PLL4CFGR2 0x89C 37 #define RCC_APB1ENSETR 0xA00 38 #define RCC_APB2ENSETR 0xA08 39 #define RCC_APB3ENSETR 0xA10 40 #define RCC_APB4ENSETR 0x200 41 #define RCC_APB5ENSETR 0x208 42 #define RCC_AHB2ENSETR 0xA18 43 #define RCC_AHB3ENSETR 0xA20 44 #define RCC_AHB4ENSETR 0xA28 45 #define RCC_AHB5ENSETR 0x210 46 #define RCC_AHB6ENSETR 0x218 47 #define RCC_AHB6LPENSETR 0x318 48 #define RCC_RCK12SELR 0x28 49 #define RCC_RCK3SELR 0x820 50 #define RCC_RCK4SELR 0x824 51 #define RCC_MPCKSELR 0x20 52 #define RCC_ASSCKSELR 0x24 53 #define RCC_MSSCKSELR 0x48 54 #define RCC_SPI6CKSELR 0xC4 55 #define RCC_SDMMC12CKSELR 0x8F4 56 #define RCC_SDMMC3CKSELR 0x8F8 57 #define RCC_FMCCKSELR 0x904 58 #define RCC_I2C46CKSELR 0xC0 59 #define RCC_I2C12CKSELR 0x8C0 60 #define RCC_I2C35CKSELR 0x8C4 61 #define RCC_UART1CKSELR 0xC8 62 #define RCC_QSPICKSELR 0x900 63 #define RCC_ETHCKSELR 0x8FC 64 #define RCC_RNG1CKSELR 0xCC 65 #define RCC_RNG2CKSELR 0x920 66 #define RCC_GPUCKSELR 0x938 67 #define RCC_USBCKSELR 0x91C 68 #define RCC_STGENCKSELR 0xD4 69 #define RCC_SPDIFCKSELR 0x914 70 #define RCC_SPI2S1CKSELR 0x8D8 71 #define RCC_SPI2S23CKSELR 0x8DC 72 #define RCC_SPI2S45CKSELR 0x8E0 73 #define RCC_CECCKSELR 0x918 74 #define RCC_LPTIM1CKSELR 0x934 75 #define RCC_LPTIM23CKSELR 0x930 76 #define RCC_LPTIM45CKSELR 0x92C 77 #define RCC_UART24CKSELR 0x8E8 78 #define RCC_UART35CKSELR 0x8EC 79 #define RCC_UART6CKSELR 0x8E4 80 #define RCC_UART78CKSELR 0x8F0 81 #define RCC_FDCANCKSELR 0x90C 82 #define RCC_SAI1CKSELR 0x8C8 83 #define RCC_SAI2CKSELR 0x8CC 84 #define RCC_SAI3CKSELR 0x8D0 85 #define RCC_SAI4CKSELR 0x8D4 86 #define RCC_ADCCKSELR 0x928 87 #define RCC_MPCKDIVR 0x2C 88 #define RCC_DSICKSELR 0x924 89 #define RCC_CPERCKSELR 0xD0 90 #define RCC_MCO1CFGR 0x800 91 #define RCC_MCO2CFGR 0x804 92 #define RCC_BDCR 0x140 93 #define RCC_AXIDIVR 0x30 94 #define RCC_MCUDIVR 0x830 95 #define RCC_APB1DIVR 0x834 96 #define RCC_APB2DIVR 0x838 97 #define RCC_APB3DIVR 0x83C 98 #define RCC_APB4DIVR 0x3C 99 #define RCC_APB5DIVR 0x40 100 #define RCC_TIMG1PRER 0x828 101 #define RCC_TIMG2PRER 0x82C 102 #define RCC_RTCDIVR 0x44 103 #define RCC_DBGCFGR 0x80C 104 105 #define RCC_CLR 0x4 106 107 static const char * const ref12_parents[] = { 108 "ck_hsi", "ck_hse" 109 }; 110 111 static const char * const ref3_parents[] = { 112 "ck_hsi", "ck_hse", "ck_csi" 113 }; 114 115 static const char * const ref4_parents[] = { 116 "ck_hsi", "ck_hse", "ck_csi" 117 }; 118 119 static const char * const cpu_src[] = { 120 "ck_hsi", "ck_hse", "pll1_p" 121 }; 122 123 static const char * const axi_src[] = { 124 "ck_hsi", "ck_hse", "pll2_p" 125 }; 126 127 static const char * const per_src[] = { 128 "ck_hsi", "ck_csi", "ck_hse" 129 }; 130 131 static const char * const mcu_src[] = { 132 "ck_hsi", "ck_hse", "ck_csi", "pll3_p" 133 }; 134 135 static const char * const sdmmc12_src[] = { 136 "ck_axi", "pll3_r", "pll4_p", "ck_hsi" 137 }; 138 139 static const char * const sdmmc3_src[] = { 140 "ck_mcu", "pll3_r", "pll4_p", "ck_hsi" 141 }; 142 143 static const char * const fmc_src[] = { 144 "ck_axi", "pll3_r", "pll4_p", "ck_per" 145 }; 146 147 static const char * const qspi_src[] = { 148 "ck_axi", "pll3_r", "pll4_p", "ck_per" 149 }; 150 151 static const char * const eth_src[] = { 152 "pll4_p", "pll3_q" 153 }; 154 155 static const char * const rng_src[] = { 156 "ck_csi", "pll4_r", "ck_lse", "ck_lsi" 157 }; 158 159 static const char * const usbphy_src[] = { 160 "ck_hse", "pll4_r", "clk-hse-div2" 161 }; 162 163 static const char * const usbo_src[] = { 164 "pll4_r", "ck_usbo_48m" 165 }; 166 167 static const char * const stgen_src[] = { 168 "ck_hsi", "ck_hse" 169 }; 170 171 static const char * const spdif_src[] = { 172 "pll4_p", "pll3_q", "ck_hsi" 173 }; 174 175 static const char * const spi123_src[] = { 176 "pll4_p", "pll3_q", "i2s_ckin", "ck_per", "pll3_r" 177 }; 178 179 static const char * const spi45_src[] = { 180 "pclk2", "pll4_q", "ck_hsi", "ck_csi", "ck_hse" 181 }; 182 183 static const char * const spi6_src[] = { 184 "pclk5", "pll4_q", "ck_hsi", "ck_csi", "ck_hse", "pll3_q" 185 }; 186 187 static const char * const cec_src[] = { 188 "ck_lse", "ck_lsi", "ck_csi" 189 }; 190 191 static const char * const i2c12_src[] = { 192 "pclk1", "pll4_r", "ck_hsi", "ck_csi" 193 }; 194 195 static const char * const i2c35_src[] = { 196 "pclk1", "pll4_r", "ck_hsi", "ck_csi" 197 }; 198 199 static const char * const i2c46_src[] = { 200 "pclk5", "pll3_q", "ck_hsi", "ck_csi" 201 }; 202 203 static const char * const lptim1_src[] = { 204 "pclk1", "pll4_p", "pll3_q", "ck_lse", "ck_lsi", "ck_per" 205 }; 206 207 static const char * const lptim23_src[] = { 208 "pclk3", "pll4_q", "ck_per", "ck_lse", "ck_lsi" 209 }; 210 211 static const char * const lptim45_src[] = { 212 "pclk3", "pll4_p", "pll3_q", "ck_lse", "ck_lsi", "ck_per" 213 }; 214 215 static const char * const usart1_src[] = { 216 "pclk5", "pll3_q", "ck_hsi", "ck_csi", "pll4_q", "ck_hse" 217 }; 218 219 static const char * const usart234578_src[] = { 220 "pclk1", "pll4_q", "ck_hsi", "ck_csi", "ck_hse" 221 }; 222 223 static const char * const usart6_src[] = { 224 "pclk2", "pll4_q", "ck_hsi", "ck_csi", "ck_hse" 225 }; 226 227 static const char * const fdcan_src[] = { 228 "ck_hse", "pll3_q", "pll4_q", "pll4_r" 229 }; 230 231 static const char * const sai_src[] = { 232 "pll4_q", "pll3_q", "i2s_ckin", "ck_per", "pll3_r" 233 }; 234 235 static const char * const sai2_src[] = { 236 "pll4_q", "pll3_q", "i2s_ckin", "ck_per", "spdif_ck_symb", "pll3_r" 237 }; 238 239 static const char * const adc12_src[] = { 240 "pll4_r", "ck_per", "pll3_q" 241 }; 242 243 static const char * const dsi_src[] = { 244 "ck_dsi_phy", "pll4_p" 245 }; 246 247 static const char * const rtc_src[] = { 248 "off", "ck_lse", "ck_lsi", "ck_hse_rtc" 249 }; 250 251 static const char * const mco1_src[] = { 252 "ck_hsi", "ck_hse", "ck_csi", "ck_lsi", "ck_lse" 253 }; 254 255 static const char * const mco2_src[] = { 256 "ck_mpu", "ck_axi", "ck_mcu", "pll4_p", "ck_hse", "ck_hsi" 257 }; 258 259 static const char * const ck_trace_src[] = { 260 "ck_axi" 261 }; 262 263 static const struct clk_div_table axi_div_table[] = { 264 { 0, 1 }, { 1, 2 }, { 2, 3 }, { 3, 4 }, 265 { 4, 4 }, { 5, 4 }, { 6, 4 }, { 7, 4 }, 266 { 0 }, 267 }; 268 269 static const struct clk_div_table mcu_div_table[] = { 270 { 0, 1 }, { 1, 2 }, { 2, 4 }, { 3, 8 }, 271 { 4, 16 }, { 5, 32 }, { 6, 64 }, { 7, 128 }, 272 { 8, 256 }, { 9, 512 }, { 10, 512}, { 11, 512 }, 273 { 12, 512 }, { 13, 512 }, { 14, 512}, { 15, 512 }, 274 { 0 }, 275 }; 276 277 static const struct clk_div_table apb_div_table[] = { 278 { 0, 1 }, { 1, 2 }, { 2, 4 }, { 3, 8 }, 279 { 4, 16 }, { 5, 16 }, { 6, 16 }, { 7, 16 }, 280 { 0 }, 281 }; 282 283 static const struct clk_div_table ck_trace_div_table[] = { 284 { 0, 1 }, { 1, 2 }, { 2, 4 }, { 3, 8 }, 285 { 4, 16 }, { 5, 16 }, { 6, 16 }, { 7, 16 }, 286 { 0 }, 287 }; 288 289 #define MAX_MUX_CLK 2 290 291 struct stm32_mmux { 292 u8 nbr_clk; 293 struct clk_hw *hws[MAX_MUX_CLK]; 294 }; 295 296 struct stm32_clk_mmux { 297 struct clk_mux mux; 298 struct stm32_mmux *mmux; 299 }; 300 301 struct stm32_mgate { 302 u8 nbr_clk; 303 u32 flag; 304 }; 305 306 struct stm32_clk_mgate { 307 struct clk_gate gate; 308 struct stm32_mgate *mgate; 309 u32 mask; 310 }; 311 312 struct clock_config { 313 u32 id; 314 const char *name; 315 const char *parent_name; 316 const char * const *parent_names; 317 int num_parents; 318 unsigned long flags; 319 void *cfg; 320 struct clk_hw * (*func)(struct device *dev, 321 struct clk_hw_onecell_data *clk_data, 322 void __iomem *base, spinlock_t *lock, 323 const struct clock_config *cfg); 324 }; 325 326 #define NO_ID ~0 327 328 struct gate_cfg { 329 u32 reg_off; 330 u8 bit_idx; 331 u8 gate_flags; 332 }; 333 334 struct fixed_factor_cfg { 335 unsigned int mult; 336 unsigned int div; 337 }; 338 339 struct div_cfg { 340 u32 reg_off; 341 u8 shift; 342 u8 width; 343 u8 div_flags; 344 const struct clk_div_table *table; 345 }; 346 347 struct mux_cfg { 348 u32 reg_off; 349 u8 shift; 350 u8 width; 351 u8 mux_flags; 352 u32 *table; 353 }; 354 355 struct stm32_gate_cfg { 356 struct gate_cfg *gate; 357 struct stm32_mgate *mgate; 358 const struct clk_ops *ops; 359 }; 360 361 struct stm32_div_cfg { 362 struct div_cfg *div; 363 const struct clk_ops *ops; 364 }; 365 366 struct stm32_mux_cfg { 367 struct mux_cfg *mux; 368 struct stm32_mmux *mmux; 369 const struct clk_ops *ops; 370 }; 371 372 /* STM32 Composite clock */ 373 struct stm32_composite_cfg { 374 const struct stm32_gate_cfg *gate; 375 const struct stm32_div_cfg *div; 376 const struct stm32_mux_cfg *mux; 377 }; 378 379 static struct clk_hw * 380 _clk_hw_register_gate(struct device *dev, 381 struct clk_hw_onecell_data *clk_data, 382 void __iomem *base, spinlock_t *lock, 383 const struct clock_config *cfg) 384 { 385 struct gate_cfg *gate_cfg = cfg->cfg; 386 387 return clk_hw_register_gate(dev, 388 cfg->name, 389 cfg->parent_name, 390 cfg->flags, 391 gate_cfg->reg_off + base, 392 gate_cfg->bit_idx, 393 gate_cfg->gate_flags, 394 lock); 395 } 396 397 static struct clk_hw * 398 _clk_hw_register_fixed_factor(struct device *dev, 399 struct clk_hw_onecell_data *clk_data, 400 void __iomem *base, spinlock_t *lock, 401 const struct clock_config *cfg) 402 { 403 struct fixed_factor_cfg *ff_cfg = cfg->cfg; 404 405 return clk_hw_register_fixed_factor(dev, cfg->name, cfg->parent_name, 406 cfg->flags, ff_cfg->mult, 407 ff_cfg->div); 408 } 409 410 static struct clk_hw * 411 _clk_hw_register_divider_table(struct device *dev, 412 struct clk_hw_onecell_data *clk_data, 413 void __iomem *base, spinlock_t *lock, 414 const struct clock_config *cfg) 415 { 416 struct div_cfg *div_cfg = cfg->cfg; 417 418 return clk_hw_register_divider_table(dev, 419 cfg->name, 420 cfg->parent_name, 421 cfg->flags, 422 div_cfg->reg_off + base, 423 div_cfg->shift, 424 div_cfg->width, 425 div_cfg->div_flags, 426 div_cfg->table, 427 lock); 428 } 429 430 static struct clk_hw * 431 _clk_hw_register_mux(struct device *dev, 432 struct clk_hw_onecell_data *clk_data, 433 void __iomem *base, spinlock_t *lock, 434 const struct clock_config *cfg) 435 { 436 struct mux_cfg *mux_cfg = cfg->cfg; 437 438 return clk_hw_register_mux(dev, cfg->name, cfg->parent_names, 439 cfg->num_parents, cfg->flags, 440 mux_cfg->reg_off + base, mux_cfg->shift, 441 mux_cfg->width, mux_cfg->mux_flags, lock); 442 } 443 444 /* MP1 Gate clock with set & clear registers */ 445 446 static int mp1_gate_clk_enable(struct clk_hw *hw) 447 { 448 if (!clk_gate_ops.is_enabled(hw)) 449 clk_gate_ops.enable(hw); 450 451 return 0; 452 } 453 454 static void mp1_gate_clk_disable(struct clk_hw *hw) 455 { 456 struct clk_gate *gate = to_clk_gate(hw); 457 unsigned long flags = 0; 458 459 if (clk_gate_ops.is_enabled(hw)) { 460 spin_lock_irqsave(gate->lock, flags); 461 writel_relaxed(BIT(gate->bit_idx), gate->reg + RCC_CLR); 462 spin_unlock_irqrestore(gate->lock, flags); 463 } 464 } 465 466 static const struct clk_ops mp1_gate_clk_ops = { 467 .enable = mp1_gate_clk_enable, 468 .disable = mp1_gate_clk_disable, 469 .is_enabled = clk_gate_is_enabled, 470 }; 471 472 static struct clk_hw *_get_stm32_mux(void __iomem *base, 473 const struct stm32_mux_cfg *cfg, 474 spinlock_t *lock) 475 { 476 struct stm32_clk_mmux *mmux; 477 struct clk_mux *mux; 478 struct clk_hw *mux_hw; 479 480 if (cfg->mmux) { 481 mmux = kzalloc(sizeof(*mmux), GFP_KERNEL); 482 if (!mmux) 483 return ERR_PTR(-ENOMEM); 484 485 mmux->mux.reg = cfg->mux->reg_off + base; 486 mmux->mux.shift = cfg->mux->shift; 487 mmux->mux.mask = (1 << cfg->mux->width) - 1; 488 mmux->mux.flags = cfg->mux->mux_flags; 489 mmux->mux.table = cfg->mux->table; 490 mmux->mux.lock = lock; 491 mmux->mmux = cfg->mmux; 492 mux_hw = &mmux->mux.hw; 493 cfg->mmux->hws[cfg->mmux->nbr_clk++] = mux_hw; 494 495 } else { 496 mux = kzalloc(sizeof(*mux), GFP_KERNEL); 497 if (!mux) 498 return ERR_PTR(-ENOMEM); 499 500 mux->reg = cfg->mux->reg_off + base; 501 mux->shift = cfg->mux->shift; 502 mux->mask = (1 << cfg->mux->width) - 1; 503 mux->flags = cfg->mux->mux_flags; 504 mux->table = cfg->mux->table; 505 mux->lock = lock; 506 mux_hw = &mux->hw; 507 } 508 509 return mux_hw; 510 } 511 512 static struct clk_hw *_get_stm32_div(void __iomem *base, 513 const struct stm32_div_cfg *cfg, 514 spinlock_t *lock) 515 { 516 struct clk_divider *div; 517 518 div = kzalloc(sizeof(*div), GFP_KERNEL); 519 520 if (!div) 521 return ERR_PTR(-ENOMEM); 522 523 div->reg = cfg->div->reg_off + base; 524 div->shift = cfg->div->shift; 525 div->width = cfg->div->width; 526 div->flags = cfg->div->div_flags; 527 div->table = cfg->div->table; 528 div->lock = lock; 529 530 return &div->hw; 531 } 532 533 static struct clk_hw * 534 _get_stm32_gate(void __iomem *base, 535 const struct stm32_gate_cfg *cfg, spinlock_t *lock) 536 { 537 struct stm32_clk_mgate *mgate; 538 struct clk_gate *gate; 539 struct clk_hw *gate_hw; 540 541 if (cfg->mgate) { 542 mgate = kzalloc(sizeof(*mgate), GFP_KERNEL); 543 if (!mgate) 544 return ERR_PTR(-ENOMEM); 545 546 mgate->gate.reg = cfg->gate->reg_off + base; 547 mgate->gate.bit_idx = cfg->gate->bit_idx; 548 mgate->gate.flags = cfg->gate->gate_flags; 549 mgate->gate.lock = lock; 550 mgate->mask = BIT(cfg->mgate->nbr_clk++); 551 552 mgate->mgate = cfg->mgate; 553 554 gate_hw = &mgate->gate.hw; 555 556 } else { 557 gate = kzalloc(sizeof(*gate), GFP_KERNEL); 558 if (!gate) 559 return ERR_PTR(-ENOMEM); 560 561 gate->reg = cfg->gate->reg_off + base; 562 gate->bit_idx = cfg->gate->bit_idx; 563 gate->flags = cfg->gate->gate_flags; 564 gate->lock = lock; 565 566 gate_hw = &gate->hw; 567 } 568 569 return gate_hw; 570 } 571 572 static struct clk_hw * 573 clk_stm32_register_gate_ops(struct device *dev, 574 const char *name, 575 const char *parent_name, 576 unsigned long flags, 577 void __iomem *base, 578 const struct stm32_gate_cfg *cfg, 579 spinlock_t *lock) 580 { 581 struct clk_init_data init = { NULL }; 582 struct clk_hw *hw; 583 int ret; 584 585 init.name = name; 586 init.parent_names = &parent_name; 587 init.num_parents = 1; 588 init.flags = flags; 589 590 init.ops = &clk_gate_ops; 591 592 if (cfg->ops) 593 init.ops = cfg->ops; 594 595 hw = _get_stm32_gate(base, cfg, lock); 596 if (IS_ERR(hw)) 597 return ERR_PTR(-ENOMEM); 598 599 hw->init = &init; 600 601 ret = clk_hw_register(dev, hw); 602 if (ret) 603 hw = ERR_PTR(ret); 604 605 return hw; 606 } 607 608 static struct clk_hw * 609 clk_stm32_register_composite(struct device *dev, 610 const char *name, const char * const *parent_names, 611 int num_parents, void __iomem *base, 612 const struct stm32_composite_cfg *cfg, 613 unsigned long flags, spinlock_t *lock) 614 { 615 const struct clk_ops *mux_ops, *div_ops, *gate_ops; 616 struct clk_hw *mux_hw, *div_hw, *gate_hw; 617 618 mux_hw = NULL; 619 div_hw = NULL; 620 gate_hw = NULL; 621 mux_ops = NULL; 622 div_ops = NULL; 623 gate_ops = NULL; 624 625 if (cfg->mux) { 626 mux_hw = _get_stm32_mux(base, cfg->mux, lock); 627 628 if (!IS_ERR(mux_hw)) { 629 mux_ops = &clk_mux_ops; 630 631 if (cfg->mux->ops) 632 mux_ops = cfg->mux->ops; 633 } 634 } 635 636 if (cfg->div) { 637 div_hw = _get_stm32_div(base, cfg->div, lock); 638 639 if (!IS_ERR(div_hw)) { 640 div_ops = &clk_divider_ops; 641 642 if (cfg->div->ops) 643 div_ops = cfg->div->ops; 644 } 645 } 646 647 if (cfg->gate) { 648 gate_hw = _get_stm32_gate(base, cfg->gate, lock); 649 650 if (!IS_ERR(gate_hw)) { 651 gate_ops = &clk_gate_ops; 652 653 if (cfg->gate->ops) 654 gate_ops = cfg->gate->ops; 655 } 656 } 657 658 return clk_hw_register_composite(dev, name, parent_names, num_parents, 659 mux_hw, mux_ops, div_hw, div_ops, 660 gate_hw, gate_ops, flags); 661 } 662 663 #define to_clk_mgate(_gate) container_of(_gate, struct stm32_clk_mgate, gate) 664 665 static int mp1_mgate_clk_enable(struct clk_hw *hw) 666 { 667 struct clk_gate *gate = to_clk_gate(hw); 668 struct stm32_clk_mgate *clk_mgate = to_clk_mgate(gate); 669 670 clk_mgate->mgate->flag |= clk_mgate->mask; 671 672 mp1_gate_clk_enable(hw); 673 674 return 0; 675 } 676 677 static void mp1_mgate_clk_disable(struct clk_hw *hw) 678 { 679 struct clk_gate *gate = to_clk_gate(hw); 680 struct stm32_clk_mgate *clk_mgate = to_clk_mgate(gate); 681 682 clk_mgate->mgate->flag &= ~clk_mgate->mask; 683 684 if (clk_mgate->mgate->flag == 0) 685 mp1_gate_clk_disable(hw); 686 } 687 688 static const struct clk_ops mp1_mgate_clk_ops = { 689 .enable = mp1_mgate_clk_enable, 690 .disable = mp1_mgate_clk_disable, 691 .is_enabled = clk_gate_is_enabled, 692 693 }; 694 695 #define to_clk_mmux(_mux) container_of(_mux, struct stm32_clk_mmux, mux) 696 697 static u8 clk_mmux_get_parent(struct clk_hw *hw) 698 { 699 return clk_mux_ops.get_parent(hw); 700 } 701 702 static int clk_mmux_set_parent(struct clk_hw *hw, u8 index) 703 { 704 struct clk_mux *mux = to_clk_mux(hw); 705 struct stm32_clk_mmux *clk_mmux = to_clk_mmux(mux); 706 struct clk_hw *hwp; 707 int ret, n; 708 709 ret = clk_mux_ops.set_parent(hw, index); 710 if (ret) 711 return ret; 712 713 hwp = clk_hw_get_parent(hw); 714 715 for (n = 0; n < clk_mmux->mmux->nbr_clk; n++) 716 if (clk_mmux->mmux->hws[n] != hw) 717 clk_hw_reparent(clk_mmux->mmux->hws[n], hwp); 718 719 return 0; 720 } 721 722 static const struct clk_ops clk_mmux_ops = { 723 .get_parent = clk_mmux_get_parent, 724 .set_parent = clk_mmux_set_parent, 725 .determine_rate = __clk_mux_determine_rate, 726 }; 727 728 /* STM32 PLL */ 729 struct stm32_pll_obj { 730 /* lock pll enable/disable registers */ 731 spinlock_t *lock; 732 void __iomem *reg; 733 struct clk_hw hw; 734 }; 735 736 #define to_pll(_hw) container_of(_hw, struct stm32_pll_obj, hw) 737 738 #define PLL_ON BIT(0) 739 #define PLL_RDY BIT(1) 740 #define DIVN_MASK 0x1FF 741 #define DIVM_MASK 0x3F 742 #define DIVM_SHIFT 16 743 #define DIVN_SHIFT 0 744 #define FRAC_OFFSET 0xC 745 #define FRAC_MASK 0x1FFF 746 #define FRAC_SHIFT 3 747 #define FRACLE BIT(16) 748 749 static int __pll_is_enabled(struct clk_hw *hw) 750 { 751 struct stm32_pll_obj *clk_elem = to_pll(hw); 752 753 return readl_relaxed(clk_elem->reg) & PLL_ON; 754 } 755 756 #define TIMEOUT 5 757 758 static int pll_enable(struct clk_hw *hw) 759 { 760 struct stm32_pll_obj *clk_elem = to_pll(hw); 761 u32 reg; 762 unsigned long flags = 0; 763 unsigned int timeout = TIMEOUT; 764 int bit_status = 0; 765 766 spin_lock_irqsave(clk_elem->lock, flags); 767 768 if (__pll_is_enabled(hw)) 769 goto unlock; 770 771 reg = readl_relaxed(clk_elem->reg); 772 reg |= PLL_ON; 773 writel_relaxed(reg, clk_elem->reg); 774 775 /* We can't use readl_poll_timeout() because we can be blocked if 776 * someone enables this clock before clocksource changes. 777 * Only jiffies counter is available. Jiffies are incremented by 778 * interruptions and enable op does not allow to be interrupted. 779 */ 780 do { 781 bit_status = !(readl_relaxed(clk_elem->reg) & PLL_RDY); 782 783 if (bit_status) 784 udelay(120); 785 786 } while (bit_status && --timeout); 787 788 unlock: 789 spin_unlock_irqrestore(clk_elem->lock, flags); 790 791 return bit_status; 792 } 793 794 static void pll_disable(struct clk_hw *hw) 795 { 796 struct stm32_pll_obj *clk_elem = to_pll(hw); 797 u32 reg; 798 unsigned long flags = 0; 799 800 spin_lock_irqsave(clk_elem->lock, flags); 801 802 reg = readl_relaxed(clk_elem->reg); 803 reg &= ~PLL_ON; 804 writel_relaxed(reg, clk_elem->reg); 805 806 spin_unlock_irqrestore(clk_elem->lock, flags); 807 } 808 809 static u32 pll_frac_val(struct clk_hw *hw) 810 { 811 struct stm32_pll_obj *clk_elem = to_pll(hw); 812 u32 reg, frac = 0; 813 814 reg = readl_relaxed(clk_elem->reg + FRAC_OFFSET); 815 if (reg & FRACLE) 816 frac = (reg >> FRAC_SHIFT) & FRAC_MASK; 817 818 return frac; 819 } 820 821 static unsigned long pll_recalc_rate(struct clk_hw *hw, 822 unsigned long parent_rate) 823 { 824 struct stm32_pll_obj *clk_elem = to_pll(hw); 825 u32 reg; 826 u32 frac, divm, divn; 827 u64 rate, rate_frac = 0; 828 829 reg = readl_relaxed(clk_elem->reg + 4); 830 831 divm = ((reg >> DIVM_SHIFT) & DIVM_MASK) + 1; 832 divn = ((reg >> DIVN_SHIFT) & DIVN_MASK) + 1; 833 rate = (u64)parent_rate * divn; 834 835 do_div(rate, divm); 836 837 frac = pll_frac_val(hw); 838 if (frac) { 839 rate_frac = (u64)parent_rate * (u64)frac; 840 do_div(rate_frac, (divm * 8192)); 841 } 842 843 return rate + rate_frac; 844 } 845 846 static int pll_is_enabled(struct clk_hw *hw) 847 { 848 struct stm32_pll_obj *clk_elem = to_pll(hw); 849 unsigned long flags = 0; 850 int ret; 851 852 spin_lock_irqsave(clk_elem->lock, flags); 853 ret = __pll_is_enabled(hw); 854 spin_unlock_irqrestore(clk_elem->lock, flags); 855 856 return ret; 857 } 858 859 static const struct clk_ops pll_ops = { 860 .enable = pll_enable, 861 .disable = pll_disable, 862 .recalc_rate = pll_recalc_rate, 863 .is_enabled = pll_is_enabled, 864 }; 865 866 static struct clk_hw *clk_register_pll(struct device *dev, const char *name, 867 const char *parent_name, 868 void __iomem *reg, 869 unsigned long flags, 870 spinlock_t *lock) 871 { 872 struct stm32_pll_obj *element; 873 struct clk_init_data init; 874 struct clk_hw *hw; 875 int err; 876 877 element = kzalloc(sizeof(*element), GFP_KERNEL); 878 if (!element) 879 return ERR_PTR(-ENOMEM); 880 881 init.name = name; 882 init.ops = &pll_ops; 883 init.flags = flags; 884 init.parent_names = &parent_name; 885 init.num_parents = 1; 886 887 element->hw.init = &init; 888 element->reg = reg; 889 element->lock = lock; 890 891 hw = &element->hw; 892 err = clk_hw_register(dev, hw); 893 894 if (err) { 895 kfree(element); 896 return ERR_PTR(err); 897 } 898 899 return hw; 900 } 901 902 /* Kernel Timer */ 903 struct timer_cker { 904 /* lock the kernel output divider register */ 905 spinlock_t *lock; 906 void __iomem *apbdiv; 907 void __iomem *timpre; 908 struct clk_hw hw; 909 }; 910 911 #define to_timer_cker(_hw) container_of(_hw, struct timer_cker, hw) 912 913 #define APB_DIV_MASK 0x07 914 #define TIM_PRE_MASK 0x01 915 916 static unsigned long __bestmult(struct clk_hw *hw, unsigned long rate, 917 unsigned long parent_rate) 918 { 919 struct timer_cker *tim_ker = to_timer_cker(hw); 920 u32 prescaler; 921 unsigned int mult = 0; 922 923 prescaler = readl_relaxed(tim_ker->apbdiv) & APB_DIV_MASK; 924 if (prescaler < 2) 925 return 1; 926 927 mult = 2; 928 929 if (rate / parent_rate >= 4) 930 mult = 4; 931 932 return mult; 933 } 934 935 static long timer_ker_round_rate(struct clk_hw *hw, unsigned long rate, 936 unsigned long *parent_rate) 937 { 938 unsigned long factor = __bestmult(hw, rate, *parent_rate); 939 940 return *parent_rate * factor; 941 } 942 943 static int timer_ker_set_rate(struct clk_hw *hw, unsigned long rate, 944 unsigned long parent_rate) 945 { 946 struct timer_cker *tim_ker = to_timer_cker(hw); 947 unsigned long flags = 0; 948 unsigned long factor = __bestmult(hw, rate, parent_rate); 949 int ret = 0; 950 951 spin_lock_irqsave(tim_ker->lock, flags); 952 953 switch (factor) { 954 case 1: 955 break; 956 case 2: 957 writel_relaxed(0, tim_ker->timpre); 958 break; 959 case 4: 960 writel_relaxed(1, tim_ker->timpre); 961 break; 962 default: 963 ret = -EINVAL; 964 } 965 spin_unlock_irqrestore(tim_ker->lock, flags); 966 967 return ret; 968 } 969 970 static unsigned long timer_ker_recalc_rate(struct clk_hw *hw, 971 unsigned long parent_rate) 972 { 973 struct timer_cker *tim_ker = to_timer_cker(hw); 974 u32 prescaler, timpre; 975 u32 mul; 976 977 prescaler = readl_relaxed(tim_ker->apbdiv) & APB_DIV_MASK; 978 979 timpre = readl_relaxed(tim_ker->timpre) & TIM_PRE_MASK; 980 981 if (!prescaler) 982 return parent_rate; 983 984 mul = (timpre + 1) * 2; 985 986 return parent_rate * mul; 987 } 988 989 static const struct clk_ops timer_ker_ops = { 990 .recalc_rate = timer_ker_recalc_rate, 991 .round_rate = timer_ker_round_rate, 992 .set_rate = timer_ker_set_rate, 993 994 }; 995 996 static struct clk_hw *clk_register_cktim(struct device *dev, const char *name, 997 const char *parent_name, 998 unsigned long flags, 999 void __iomem *apbdiv, 1000 void __iomem *timpre, 1001 spinlock_t *lock) 1002 { 1003 struct timer_cker *tim_ker; 1004 struct clk_init_data init; 1005 struct clk_hw *hw; 1006 int err; 1007 1008 tim_ker = kzalloc(sizeof(*tim_ker), GFP_KERNEL); 1009 if (!tim_ker) 1010 return ERR_PTR(-ENOMEM); 1011 1012 init.name = name; 1013 init.ops = &timer_ker_ops; 1014 init.flags = flags; 1015 init.parent_names = &parent_name; 1016 init.num_parents = 1; 1017 1018 tim_ker->hw.init = &init; 1019 tim_ker->lock = lock; 1020 tim_ker->apbdiv = apbdiv; 1021 tim_ker->timpre = timpre; 1022 1023 hw = &tim_ker->hw; 1024 err = clk_hw_register(dev, hw); 1025 1026 if (err) { 1027 kfree(tim_ker); 1028 return ERR_PTR(err); 1029 } 1030 1031 return hw; 1032 } 1033 1034 struct stm32_pll_cfg { 1035 u32 offset; 1036 }; 1037 1038 static struct clk_hw *_clk_register_pll(struct device *dev, 1039 struct clk_hw_onecell_data *clk_data, 1040 void __iomem *base, spinlock_t *lock, 1041 const struct clock_config *cfg) 1042 { 1043 struct stm32_pll_cfg *stm_pll_cfg = cfg->cfg; 1044 1045 return clk_register_pll(dev, cfg->name, cfg->parent_name, 1046 base + stm_pll_cfg->offset, cfg->flags, lock); 1047 } 1048 1049 struct stm32_cktim_cfg { 1050 u32 offset_apbdiv; 1051 u32 offset_timpre; 1052 }; 1053 1054 static struct clk_hw *_clk_register_cktim(struct device *dev, 1055 struct clk_hw_onecell_data *clk_data, 1056 void __iomem *base, spinlock_t *lock, 1057 const struct clock_config *cfg) 1058 { 1059 struct stm32_cktim_cfg *cktim_cfg = cfg->cfg; 1060 1061 return clk_register_cktim(dev, cfg->name, cfg->parent_name, cfg->flags, 1062 cktim_cfg->offset_apbdiv + base, 1063 cktim_cfg->offset_timpre + base, lock); 1064 } 1065 1066 static struct clk_hw * 1067 _clk_stm32_register_gate(struct device *dev, 1068 struct clk_hw_onecell_data *clk_data, 1069 void __iomem *base, spinlock_t *lock, 1070 const struct clock_config *cfg) 1071 { 1072 return clk_stm32_register_gate_ops(dev, 1073 cfg->name, 1074 cfg->parent_name, 1075 cfg->flags, 1076 base, 1077 cfg->cfg, 1078 lock); 1079 } 1080 1081 static struct clk_hw * 1082 _clk_stm32_register_composite(struct device *dev, 1083 struct clk_hw_onecell_data *clk_data, 1084 void __iomem *base, spinlock_t *lock, 1085 const struct clock_config *cfg) 1086 { 1087 return clk_stm32_register_composite(dev, cfg->name, cfg->parent_names, 1088 cfg->num_parents, base, cfg->cfg, 1089 cfg->flags, lock); 1090 } 1091 1092 #define GATE(_id, _name, _parent, _flags, _offset, _bit_idx, _gate_flags)\ 1093 {\ 1094 .id = _id,\ 1095 .name = _name,\ 1096 .parent_name = _parent,\ 1097 .flags = _flags,\ 1098 .cfg = &(struct gate_cfg) {\ 1099 .reg_off = _offset,\ 1100 .bit_idx = _bit_idx,\ 1101 .gate_flags = _gate_flags,\ 1102 },\ 1103 .func = _clk_hw_register_gate,\ 1104 } 1105 1106 #define FIXED_FACTOR(_id, _name, _parent, _flags, _mult, _div)\ 1107 {\ 1108 .id = _id,\ 1109 .name = _name,\ 1110 .parent_name = _parent,\ 1111 .flags = _flags,\ 1112 .cfg = &(struct fixed_factor_cfg) {\ 1113 .mult = _mult,\ 1114 .div = _div,\ 1115 },\ 1116 .func = _clk_hw_register_fixed_factor,\ 1117 } 1118 1119 #define DIV_TABLE(_id, _name, _parent, _flags, _offset, _shift, _width,\ 1120 _div_flags, _div_table)\ 1121 {\ 1122 .id = _id,\ 1123 .name = _name,\ 1124 .parent_name = _parent,\ 1125 .flags = _flags,\ 1126 .cfg = &(struct div_cfg) {\ 1127 .reg_off = _offset,\ 1128 .shift = _shift,\ 1129 .width = _width,\ 1130 .div_flags = _div_flags,\ 1131 .table = _div_table,\ 1132 },\ 1133 .func = _clk_hw_register_divider_table,\ 1134 } 1135 1136 #define DIV(_id, _name, _parent, _flags, _offset, _shift, _width, _div_flags)\ 1137 DIV_TABLE(_id, _name, _parent, _flags, _offset, _shift, _width,\ 1138 _div_flags, NULL) 1139 1140 #define MUX(_id, _name, _parents, _flags, _offset, _shift, _width, _mux_flags)\ 1141 {\ 1142 .id = _id,\ 1143 .name = _name,\ 1144 .parent_names = _parents,\ 1145 .num_parents = ARRAY_SIZE(_parents),\ 1146 .flags = _flags,\ 1147 .cfg = &(struct mux_cfg) {\ 1148 .reg_off = _offset,\ 1149 .shift = _shift,\ 1150 .width = _width,\ 1151 .mux_flags = _mux_flags,\ 1152 },\ 1153 .func = _clk_hw_register_mux,\ 1154 } 1155 1156 #define PLL(_id, _name, _parent, _flags, _offset)\ 1157 {\ 1158 .id = _id,\ 1159 .name = _name,\ 1160 .parent_name = _parent,\ 1161 .flags = _flags,\ 1162 .cfg = &(struct stm32_pll_cfg) {\ 1163 .offset = _offset,\ 1164 },\ 1165 .func = _clk_register_pll,\ 1166 } 1167 1168 #define STM32_CKTIM(_name, _parent, _flags, _offset_apbdiv, _offset_timpre)\ 1169 {\ 1170 .id = NO_ID,\ 1171 .name = _name,\ 1172 .parent_name = _parent,\ 1173 .flags = _flags,\ 1174 .cfg = &(struct stm32_cktim_cfg) {\ 1175 .offset_apbdiv = _offset_apbdiv,\ 1176 .offset_timpre = _offset_timpre,\ 1177 },\ 1178 .func = _clk_register_cktim,\ 1179 } 1180 1181 #define STM32_TIM(_id, _name, _parent, _offset_set, _bit_idx)\ 1182 GATE_MP1(_id, _name, _parent, CLK_SET_RATE_PARENT,\ 1183 _offset_set, _bit_idx, 0) 1184 1185 /* STM32 GATE */ 1186 #define STM32_GATE(_id, _name, _parent, _flags, _gate)\ 1187 {\ 1188 .id = _id,\ 1189 .name = _name,\ 1190 .parent_name = _parent,\ 1191 .flags = _flags,\ 1192 .cfg = (struct stm32_gate_cfg *) {_gate},\ 1193 .func = _clk_stm32_register_gate,\ 1194 } 1195 1196 #define _STM32_GATE(_gate_offset, _gate_bit_idx, _gate_flags, _mgate, _ops)\ 1197 (&(struct stm32_gate_cfg) {\ 1198 &(struct gate_cfg) {\ 1199 .reg_off = _gate_offset,\ 1200 .bit_idx = _gate_bit_idx,\ 1201 .gate_flags = _gate_flags,\ 1202 },\ 1203 .mgate = _mgate,\ 1204 .ops = _ops,\ 1205 }) 1206 1207 #define _STM32_MGATE(_mgate)\ 1208 (&per_gate_cfg[_mgate]) 1209 1210 #define _GATE(_gate_offset, _gate_bit_idx, _gate_flags)\ 1211 _STM32_GATE(_gate_offset, _gate_bit_idx, _gate_flags,\ 1212 NULL, NULL)\ 1213 1214 #define _GATE_MP1(_gate_offset, _gate_bit_idx, _gate_flags)\ 1215 _STM32_GATE(_gate_offset, _gate_bit_idx, _gate_flags,\ 1216 NULL, &mp1_gate_clk_ops)\ 1217 1218 #define _MGATE_MP1(_mgate)\ 1219 .gate = &per_gate_cfg[_mgate] 1220 1221 #define GATE_MP1(_id, _name, _parent, _flags, _offset, _bit_idx, _gate_flags)\ 1222 STM32_GATE(_id, _name, _parent, _flags,\ 1223 _GATE_MP1(_offset, _bit_idx, _gate_flags)) 1224 1225 #define MGATE_MP1(_id, _name, _parent, _flags, _mgate)\ 1226 STM32_GATE(_id, _name, _parent, _flags,\ 1227 _STM32_MGATE(_mgate)) 1228 1229 #define _STM32_DIV(_div_offset, _div_shift, _div_width,\ 1230 _div_flags, _div_table, _ops)\ 1231 .div = &(struct stm32_div_cfg) {\ 1232 &(struct div_cfg) {\ 1233 .reg_off = _div_offset,\ 1234 .shift = _div_shift,\ 1235 .width = _div_width,\ 1236 .div_flags = _div_flags,\ 1237 .table = _div_table,\ 1238 },\ 1239 .ops = _ops,\ 1240 } 1241 1242 #define _DIV(_div_offset, _div_shift, _div_width, _div_flags, _div_table)\ 1243 _STM32_DIV(_div_offset, _div_shift, _div_width,\ 1244 _div_flags, _div_table, NULL)\ 1245 1246 #define _STM32_MUX(_offset, _shift, _width, _mux_flags, _mmux, _ops)\ 1247 .mux = &(struct stm32_mux_cfg) {\ 1248 &(struct mux_cfg) {\ 1249 .reg_off = _offset,\ 1250 .shift = _shift,\ 1251 .width = _width,\ 1252 .mux_flags = _mux_flags,\ 1253 .table = NULL,\ 1254 },\ 1255 .mmux = _mmux,\ 1256 .ops = _ops,\ 1257 } 1258 1259 #define _MUX(_offset, _shift, _width, _mux_flags)\ 1260 _STM32_MUX(_offset, _shift, _width, _mux_flags, NULL, NULL)\ 1261 1262 #define _MMUX(_mmux) .mux = &ker_mux_cfg[_mmux] 1263 1264 #define PARENT(_parent) ((const char *[]) { _parent}) 1265 1266 #define _NO_MUX .mux = NULL 1267 #define _NO_DIV .div = NULL 1268 #define _NO_GATE .gate = NULL 1269 1270 #define COMPOSITE(_id, _name, _parents, _flags, _gate, _mux, _div)\ 1271 {\ 1272 .id = _id,\ 1273 .name = _name,\ 1274 .parent_names = _parents,\ 1275 .num_parents = ARRAY_SIZE(_parents),\ 1276 .flags = _flags,\ 1277 .cfg = &(struct stm32_composite_cfg) {\ 1278 _gate,\ 1279 _mux,\ 1280 _div,\ 1281 },\ 1282 .func = _clk_stm32_register_composite,\ 1283 } 1284 1285 #define PCLK(_id, _name, _parent, _flags, _mgate)\ 1286 MGATE_MP1(_id, _name, _parent, _flags, _mgate) 1287 1288 #define KCLK(_id, _name, _parents, _flags, _mgate, _mmux)\ 1289 COMPOSITE(_id, _name, _parents, CLK_OPS_PARENT_ENABLE |\ 1290 CLK_SET_RATE_NO_REPARENT | _flags,\ 1291 _MGATE_MP1(_mgate),\ 1292 _MMUX(_mmux),\ 1293 _NO_DIV) 1294 1295 enum { 1296 G_SAI1, 1297 G_SAI2, 1298 G_SAI3, 1299 G_SAI4, 1300 G_SPI1, 1301 G_SPI2, 1302 G_SPI3, 1303 G_SPI4, 1304 G_SPI5, 1305 G_SPI6, 1306 G_SPDIF, 1307 G_I2C1, 1308 G_I2C2, 1309 G_I2C3, 1310 G_I2C4, 1311 G_I2C5, 1312 G_I2C6, 1313 G_USART2, 1314 G_UART4, 1315 G_USART3, 1316 G_UART5, 1317 G_USART1, 1318 G_USART6, 1319 G_UART7, 1320 G_UART8, 1321 G_LPTIM1, 1322 G_LPTIM2, 1323 G_LPTIM3, 1324 G_LPTIM4, 1325 G_LPTIM5, 1326 G_LTDC, 1327 G_DSI, 1328 G_QSPI, 1329 G_FMC, 1330 G_SDMMC1, 1331 G_SDMMC2, 1332 G_SDMMC3, 1333 G_USBO, 1334 G_USBPHY, 1335 G_RNG1, 1336 G_RNG2, 1337 G_FDCAN, 1338 G_DAC12, 1339 G_CEC, 1340 G_ADC12, 1341 G_GPU, 1342 G_STGEN, 1343 G_DFSDM, 1344 G_ADFSDM, 1345 G_TIM2, 1346 G_TIM3, 1347 G_TIM4, 1348 G_TIM5, 1349 G_TIM6, 1350 G_TIM7, 1351 G_TIM12, 1352 G_TIM13, 1353 G_TIM14, 1354 G_MDIO, 1355 G_TIM1, 1356 G_TIM8, 1357 G_TIM15, 1358 G_TIM16, 1359 G_TIM17, 1360 G_SYSCFG, 1361 G_VREF, 1362 G_TMPSENS, 1363 G_PMBCTRL, 1364 G_HDP, 1365 G_IWDG2, 1366 G_STGENRO, 1367 G_DMA1, 1368 G_DMA2, 1369 G_DMAMUX, 1370 G_DCMI, 1371 G_CRYP2, 1372 G_HASH2, 1373 G_CRC2, 1374 G_HSEM, 1375 G_IPCC, 1376 G_GPIOA, 1377 G_GPIOB, 1378 G_GPIOC, 1379 G_GPIOD, 1380 G_GPIOE, 1381 G_GPIOF, 1382 G_GPIOG, 1383 G_GPIOH, 1384 G_GPIOI, 1385 G_GPIOJ, 1386 G_GPIOK, 1387 G_MDMA, 1388 G_ETHCK, 1389 G_ETHTX, 1390 G_ETHRX, 1391 G_ETHMAC, 1392 G_CRC1, 1393 G_USBH, 1394 G_ETHSTP, 1395 G_RTCAPB, 1396 G_TZC1, 1397 G_TZC2, 1398 G_TZPC, 1399 G_IWDG1, 1400 G_BSEC, 1401 G_GPIOZ, 1402 G_CRYP1, 1403 G_HASH1, 1404 G_BKPSRAM, 1405 1406 G_LAST 1407 }; 1408 1409 static struct stm32_mgate mp1_mgate[G_LAST]; 1410 1411 #define _K_GATE(_id, _gate_offset, _gate_bit_idx, _gate_flags,\ 1412 _mgate, _ops)\ 1413 [_id] = {\ 1414 &(struct gate_cfg) {\ 1415 .reg_off = _gate_offset,\ 1416 .bit_idx = _gate_bit_idx,\ 1417 .gate_flags = _gate_flags,\ 1418 },\ 1419 .mgate = _mgate,\ 1420 .ops = _ops,\ 1421 } 1422 1423 #define K_GATE(_id, _gate_offset, _gate_bit_idx, _gate_flags)\ 1424 _K_GATE(_id, _gate_offset, _gate_bit_idx, _gate_flags,\ 1425 NULL, &mp1_gate_clk_ops) 1426 1427 #define K_MGATE(_id, _gate_offset, _gate_bit_idx, _gate_flags)\ 1428 _K_GATE(_id, _gate_offset, _gate_bit_idx, _gate_flags,\ 1429 &mp1_mgate[_id], &mp1_mgate_clk_ops) 1430 1431 /* Peripheral gates */ 1432 static struct stm32_gate_cfg per_gate_cfg[G_LAST] = { 1433 /* Multi gates */ 1434 K_GATE(G_MDIO, RCC_APB1ENSETR, 31, 0), 1435 K_MGATE(G_DAC12, RCC_APB1ENSETR, 29, 0), 1436 K_MGATE(G_CEC, RCC_APB1ENSETR, 27, 0), 1437 K_MGATE(G_SPDIF, RCC_APB1ENSETR, 26, 0), 1438 K_MGATE(G_I2C5, RCC_APB1ENSETR, 24, 0), 1439 K_MGATE(G_I2C3, RCC_APB1ENSETR, 23, 0), 1440 K_MGATE(G_I2C2, RCC_APB1ENSETR, 22, 0), 1441 K_MGATE(G_I2C1, RCC_APB1ENSETR, 21, 0), 1442 K_MGATE(G_UART8, RCC_APB1ENSETR, 19, 0), 1443 K_MGATE(G_UART7, RCC_APB1ENSETR, 18, 0), 1444 K_MGATE(G_UART5, RCC_APB1ENSETR, 17, 0), 1445 K_MGATE(G_UART4, RCC_APB1ENSETR, 16, 0), 1446 K_MGATE(G_USART3, RCC_APB1ENSETR, 15, 0), 1447 K_MGATE(G_USART2, RCC_APB1ENSETR, 14, 0), 1448 K_MGATE(G_SPI3, RCC_APB1ENSETR, 12, 0), 1449 K_MGATE(G_SPI2, RCC_APB1ENSETR, 11, 0), 1450 K_MGATE(G_LPTIM1, RCC_APB1ENSETR, 9, 0), 1451 K_GATE(G_TIM14, RCC_APB1ENSETR, 8, 0), 1452 K_GATE(G_TIM13, RCC_APB1ENSETR, 7, 0), 1453 K_GATE(G_TIM12, RCC_APB1ENSETR, 6, 0), 1454 K_GATE(G_TIM7, RCC_APB1ENSETR, 5, 0), 1455 K_GATE(G_TIM6, RCC_APB1ENSETR, 4, 0), 1456 K_GATE(G_TIM5, RCC_APB1ENSETR, 3, 0), 1457 K_GATE(G_TIM4, RCC_APB1ENSETR, 2, 0), 1458 K_GATE(G_TIM3, RCC_APB1ENSETR, 1, 0), 1459 K_GATE(G_TIM2, RCC_APB1ENSETR, 0, 0), 1460 1461 K_MGATE(G_FDCAN, RCC_APB2ENSETR, 24, 0), 1462 K_GATE(G_ADFSDM, RCC_APB2ENSETR, 21, 0), 1463 K_GATE(G_DFSDM, RCC_APB2ENSETR, 20, 0), 1464 K_MGATE(G_SAI3, RCC_APB2ENSETR, 18, 0), 1465 K_MGATE(G_SAI2, RCC_APB2ENSETR, 17, 0), 1466 K_MGATE(G_SAI1, RCC_APB2ENSETR, 16, 0), 1467 K_MGATE(G_USART6, RCC_APB2ENSETR, 13, 0), 1468 K_MGATE(G_SPI5, RCC_APB2ENSETR, 10, 0), 1469 K_MGATE(G_SPI4, RCC_APB2ENSETR, 9, 0), 1470 K_MGATE(G_SPI1, RCC_APB2ENSETR, 8, 0), 1471 K_GATE(G_TIM17, RCC_APB2ENSETR, 4, 0), 1472 K_GATE(G_TIM16, RCC_APB2ENSETR, 3, 0), 1473 K_GATE(G_TIM15, RCC_APB2ENSETR, 2, 0), 1474 K_GATE(G_TIM8, RCC_APB2ENSETR, 1, 0), 1475 K_GATE(G_TIM1, RCC_APB2ENSETR, 0, 0), 1476 1477 K_GATE(G_HDP, RCC_APB3ENSETR, 20, 0), 1478 K_GATE(G_PMBCTRL, RCC_APB3ENSETR, 17, 0), 1479 K_GATE(G_TMPSENS, RCC_APB3ENSETR, 16, 0), 1480 K_GATE(G_VREF, RCC_APB3ENSETR, 13, 0), 1481 K_GATE(G_SYSCFG, RCC_APB3ENSETR, 11, 0), 1482 K_MGATE(G_SAI4, RCC_APB3ENSETR, 8, 0), 1483 K_MGATE(G_LPTIM5, RCC_APB3ENSETR, 3, 0), 1484 K_MGATE(G_LPTIM4, RCC_APB3ENSETR, 2, 0), 1485 K_MGATE(G_LPTIM3, RCC_APB3ENSETR, 1, 0), 1486 K_MGATE(G_LPTIM2, RCC_APB3ENSETR, 0, 0), 1487 1488 K_GATE(G_STGENRO, RCC_APB4ENSETR, 20, 0), 1489 K_MGATE(G_USBPHY, RCC_APB4ENSETR, 16, 0), 1490 K_GATE(G_IWDG2, RCC_APB4ENSETR, 15, 0), 1491 K_MGATE(G_DSI, RCC_APB4ENSETR, 4, 0), 1492 K_MGATE(G_LTDC, RCC_APB4ENSETR, 0, 0), 1493 1494 K_GATE(G_STGEN, RCC_APB5ENSETR, 20, 0), 1495 K_GATE(G_BSEC, RCC_APB5ENSETR, 16, 0), 1496 K_GATE(G_IWDG1, RCC_APB5ENSETR, 15, 0), 1497 K_GATE(G_TZPC, RCC_APB5ENSETR, 13, 0), 1498 K_GATE(G_TZC2, RCC_APB5ENSETR, 12, 0), 1499 K_GATE(G_TZC1, RCC_APB5ENSETR, 11, 0), 1500 K_GATE(G_RTCAPB, RCC_APB5ENSETR, 8, 0), 1501 K_MGATE(G_USART1, RCC_APB5ENSETR, 4, 0), 1502 K_MGATE(G_I2C6, RCC_APB5ENSETR, 3, 0), 1503 K_MGATE(G_I2C4, RCC_APB5ENSETR, 2, 0), 1504 K_MGATE(G_SPI6, RCC_APB5ENSETR, 0, 0), 1505 1506 K_MGATE(G_SDMMC3, RCC_AHB2ENSETR, 16, 0), 1507 K_MGATE(G_USBO, RCC_AHB2ENSETR, 8, 0), 1508 K_MGATE(G_ADC12, RCC_AHB2ENSETR, 5, 0), 1509 K_GATE(G_DMAMUX, RCC_AHB2ENSETR, 2, 0), 1510 K_GATE(G_DMA2, RCC_AHB2ENSETR, 1, 0), 1511 K_GATE(G_DMA1, RCC_AHB2ENSETR, 0, 0), 1512 1513 K_GATE(G_IPCC, RCC_AHB3ENSETR, 12, 0), 1514 K_GATE(G_HSEM, RCC_AHB3ENSETR, 11, 0), 1515 K_GATE(G_CRC2, RCC_AHB3ENSETR, 7, 0), 1516 K_MGATE(G_RNG2, RCC_AHB3ENSETR, 6, 0), 1517 K_GATE(G_HASH2, RCC_AHB3ENSETR, 5, 0), 1518 K_GATE(G_CRYP2, RCC_AHB3ENSETR, 4, 0), 1519 K_GATE(G_DCMI, RCC_AHB3ENSETR, 0, 0), 1520 1521 K_GATE(G_GPIOK, RCC_AHB4ENSETR, 10, 0), 1522 K_GATE(G_GPIOJ, RCC_AHB4ENSETR, 9, 0), 1523 K_GATE(G_GPIOI, RCC_AHB4ENSETR, 8, 0), 1524 K_GATE(G_GPIOH, RCC_AHB4ENSETR, 7, 0), 1525 K_GATE(G_GPIOG, RCC_AHB4ENSETR, 6, 0), 1526 K_GATE(G_GPIOF, RCC_AHB4ENSETR, 5, 0), 1527 K_GATE(G_GPIOE, RCC_AHB4ENSETR, 4, 0), 1528 K_GATE(G_GPIOD, RCC_AHB4ENSETR, 3, 0), 1529 K_GATE(G_GPIOC, RCC_AHB4ENSETR, 2, 0), 1530 K_GATE(G_GPIOB, RCC_AHB4ENSETR, 1, 0), 1531 K_GATE(G_GPIOA, RCC_AHB4ENSETR, 0, 0), 1532 1533 K_GATE(G_BKPSRAM, RCC_AHB5ENSETR, 8, 0), 1534 K_MGATE(G_RNG1, RCC_AHB5ENSETR, 6, 0), 1535 K_GATE(G_HASH1, RCC_AHB5ENSETR, 5, 0), 1536 K_GATE(G_CRYP1, RCC_AHB5ENSETR, 4, 0), 1537 K_GATE(G_GPIOZ, RCC_AHB5ENSETR, 0, 0), 1538 1539 K_GATE(G_USBH, RCC_AHB6ENSETR, 24, 0), 1540 K_GATE(G_CRC1, RCC_AHB6ENSETR, 20, 0), 1541 K_MGATE(G_SDMMC2, RCC_AHB6ENSETR, 17, 0), 1542 K_MGATE(G_SDMMC1, RCC_AHB6ENSETR, 16, 0), 1543 K_MGATE(G_QSPI, RCC_AHB6ENSETR, 14, 0), 1544 K_MGATE(G_FMC, RCC_AHB6ENSETR, 12, 0), 1545 K_GATE(G_ETHMAC, RCC_AHB6ENSETR, 10, 0), 1546 K_GATE(G_ETHRX, RCC_AHB6ENSETR, 9, 0), 1547 K_GATE(G_ETHTX, RCC_AHB6ENSETR, 8, 0), 1548 K_GATE(G_ETHCK, RCC_AHB6ENSETR, 7, 0), 1549 K_MGATE(G_GPU, RCC_AHB6ENSETR, 5, 0), 1550 K_GATE(G_MDMA, RCC_AHB6ENSETR, 0, 0), 1551 K_GATE(G_ETHSTP, RCC_AHB6LPENSETR, 11, 0), 1552 }; 1553 1554 enum { 1555 M_SDMMC12, 1556 M_SDMMC3, 1557 M_FMC, 1558 M_QSPI, 1559 M_RNG1, 1560 M_RNG2, 1561 M_USBPHY, 1562 M_USBO, 1563 M_STGEN, 1564 M_SPDIF, 1565 M_SPI1, 1566 M_SPI23, 1567 M_SPI45, 1568 M_SPI6, 1569 M_CEC, 1570 M_I2C12, 1571 M_I2C35, 1572 M_I2C46, 1573 M_LPTIM1, 1574 M_LPTIM23, 1575 M_LPTIM45, 1576 M_USART1, 1577 M_UART24, 1578 M_UART35, 1579 M_USART6, 1580 M_UART78, 1581 M_SAI1, 1582 M_SAI2, 1583 M_SAI3, 1584 M_SAI4, 1585 M_DSI, 1586 M_FDCAN, 1587 M_ADC12, 1588 M_ETHCK, 1589 M_CKPER, 1590 M_LAST 1591 }; 1592 1593 static struct stm32_mmux ker_mux[M_LAST]; 1594 1595 #define _K_MUX(_id, _offset, _shift, _width, _mux_flags, _mmux, _ops)\ 1596 [_id] = {\ 1597 &(struct mux_cfg) {\ 1598 .reg_off = _offset,\ 1599 .shift = _shift,\ 1600 .width = _width,\ 1601 .mux_flags = _mux_flags,\ 1602 .table = NULL,\ 1603 },\ 1604 .mmux = _mmux,\ 1605 .ops = _ops,\ 1606 } 1607 1608 #define K_MUX(_id, _offset, _shift, _width, _mux_flags)\ 1609 _K_MUX(_id, _offset, _shift, _width, _mux_flags,\ 1610 NULL, NULL) 1611 1612 #define K_MMUX(_id, _offset, _shift, _width, _mux_flags)\ 1613 _K_MUX(_id, _offset, _shift, _width, _mux_flags,\ 1614 &ker_mux[_id], &clk_mmux_ops) 1615 1616 static const struct stm32_mux_cfg ker_mux_cfg[M_LAST] = { 1617 /* Kernel multi mux */ 1618 K_MMUX(M_SDMMC12, RCC_SDMMC12CKSELR, 0, 3, 0), 1619 K_MMUX(M_SPI23, RCC_SPI2S23CKSELR, 0, 3, 0), 1620 K_MMUX(M_SPI45, RCC_SPI2S45CKSELR, 0, 3, 0), 1621 K_MMUX(M_I2C12, RCC_I2C12CKSELR, 0, 3, 0), 1622 K_MMUX(M_I2C35, RCC_I2C35CKSELR, 0, 3, 0), 1623 K_MMUX(M_LPTIM23, RCC_LPTIM23CKSELR, 0, 3, 0), 1624 K_MMUX(M_LPTIM45, RCC_LPTIM45CKSELR, 0, 3, 0), 1625 K_MMUX(M_UART24, RCC_UART24CKSELR, 0, 3, 0), 1626 K_MMUX(M_UART35, RCC_UART35CKSELR, 0, 3, 0), 1627 K_MMUX(M_UART78, RCC_UART78CKSELR, 0, 3, 0), 1628 K_MMUX(M_SAI1, RCC_SAI1CKSELR, 0, 3, 0), 1629 K_MMUX(M_ETHCK, RCC_ETHCKSELR, 0, 2, 0), 1630 K_MMUX(M_I2C46, RCC_I2C46CKSELR, 0, 3, 0), 1631 1632 /* Kernel simple mux */ 1633 K_MUX(M_RNG2, RCC_RNG2CKSELR, 0, 2, 0), 1634 K_MUX(M_SDMMC3, RCC_SDMMC3CKSELR, 0, 3, 0), 1635 K_MUX(M_FMC, RCC_FMCCKSELR, 0, 2, 0), 1636 K_MUX(M_QSPI, RCC_QSPICKSELR, 0, 2, 0), 1637 K_MUX(M_USBPHY, RCC_USBCKSELR, 0, 2, 0), 1638 K_MUX(M_USBO, RCC_USBCKSELR, 4, 1, 0), 1639 K_MUX(M_SPDIF, RCC_SPDIFCKSELR, 0, 2, 0), 1640 K_MUX(M_SPI1, RCC_SPI2S1CKSELR, 0, 3, 0), 1641 K_MUX(M_CEC, RCC_CECCKSELR, 0, 2, 0), 1642 K_MUX(M_LPTIM1, RCC_LPTIM1CKSELR, 0, 3, 0), 1643 K_MUX(M_USART6, RCC_UART6CKSELR, 0, 3, 0), 1644 K_MUX(M_FDCAN, RCC_FDCANCKSELR, 0, 2, 0), 1645 K_MUX(M_SAI2, RCC_SAI2CKSELR, 0, 3, 0), 1646 K_MUX(M_SAI3, RCC_SAI3CKSELR, 0, 3, 0), 1647 K_MUX(M_SAI4, RCC_SAI4CKSELR, 0, 3, 0), 1648 K_MUX(M_ADC12, RCC_ADCCKSELR, 0, 2, 0), 1649 K_MUX(M_DSI, RCC_DSICKSELR, 0, 1, 0), 1650 K_MUX(M_CKPER, RCC_CPERCKSELR, 0, 2, 0), 1651 K_MUX(M_RNG1, RCC_RNG1CKSELR, 0, 2, 0), 1652 K_MUX(M_STGEN, RCC_STGENCKSELR, 0, 2, 0), 1653 K_MUX(M_USART1, RCC_UART1CKSELR, 0, 3, 0), 1654 K_MUX(M_SPI6, RCC_SPI6CKSELR, 0, 3, 0), 1655 }; 1656 1657 static const struct clock_config stm32mp1_clock_cfg[] = { 1658 /* Oscillator divider */ 1659 DIV(NO_ID, "clk-hsi-div", "clk-hsi", CLK_DIVIDER_POWER_OF_TWO, 1660 RCC_HSICFGR, 0, 2, CLK_DIVIDER_READ_ONLY), 1661 1662 /* External / Internal Oscillators */ 1663 GATE_MP1(CK_HSE, "ck_hse", "clk-hse", 0, RCC_OCENSETR, 8, 0), 1664 /* ck_csi is used by IO compensation and should be critical */ 1665 GATE_MP1(CK_CSI, "ck_csi", "clk-csi", CLK_IS_CRITICAL, 1666 RCC_OCENSETR, 4, 0), 1667 GATE_MP1(CK_HSI, "ck_hsi", "clk-hsi-div", 0, RCC_OCENSETR, 0, 0), 1668 GATE(CK_LSI, "ck_lsi", "clk-lsi", 0, RCC_RDLSICR, 0, 0), 1669 GATE(CK_LSE, "ck_lse", "clk-lse", 0, RCC_BDCR, 0, 0), 1670 1671 FIXED_FACTOR(CK_HSE_DIV2, "clk-hse-div2", "ck_hse", 0, 1, 2), 1672 1673 /* ref clock pll */ 1674 MUX(NO_ID, "ref1", ref12_parents, CLK_OPS_PARENT_ENABLE, RCC_RCK12SELR, 1675 0, 2, CLK_MUX_READ_ONLY), 1676 1677 MUX(NO_ID, "ref3", ref3_parents, CLK_OPS_PARENT_ENABLE, RCC_RCK3SELR, 1678 0, 2, CLK_MUX_READ_ONLY), 1679 1680 MUX(NO_ID, "ref4", ref4_parents, CLK_OPS_PARENT_ENABLE, RCC_RCK4SELR, 1681 0, 2, CLK_MUX_READ_ONLY), 1682 1683 /* PLLs */ 1684 PLL(PLL1, "pll1", "ref1", CLK_IGNORE_UNUSED, RCC_PLL1CR), 1685 PLL(PLL2, "pll2", "ref1", CLK_IGNORE_UNUSED, RCC_PLL2CR), 1686 PLL(PLL3, "pll3", "ref3", CLK_IGNORE_UNUSED, RCC_PLL3CR), 1687 PLL(PLL4, "pll4", "ref4", CLK_IGNORE_UNUSED, RCC_PLL4CR), 1688 1689 /* ODF */ 1690 COMPOSITE(PLL1_P, "pll1_p", PARENT("pll1"), 0, 1691 _GATE(RCC_PLL1CR, 4, 0), 1692 _NO_MUX, 1693 _DIV(RCC_PLL1CFGR2, 0, 7, 0, NULL)), 1694 1695 COMPOSITE(PLL2_P, "pll2_p", PARENT("pll2"), 0, 1696 _GATE(RCC_PLL2CR, 4, 0), 1697 _NO_MUX, 1698 _DIV(RCC_PLL2CFGR2, 0, 7, 0, NULL)), 1699 1700 COMPOSITE(PLL2_Q, "pll2_q", PARENT("pll2"), 0, 1701 _GATE(RCC_PLL2CR, 5, 0), 1702 _NO_MUX, 1703 _DIV(RCC_PLL2CFGR2, 8, 7, 0, NULL)), 1704 1705 COMPOSITE(PLL2_R, "pll2_r", PARENT("pll2"), CLK_IS_CRITICAL, 1706 _GATE(RCC_PLL2CR, 6, 0), 1707 _NO_MUX, 1708 _DIV(RCC_PLL2CFGR2, 16, 7, 0, NULL)), 1709 1710 COMPOSITE(PLL3_P, "pll3_p", PARENT("pll3"), 0, 1711 _GATE(RCC_PLL3CR, 4, 0), 1712 _NO_MUX, 1713 _DIV(RCC_PLL3CFGR2, 0, 7, 0, NULL)), 1714 1715 COMPOSITE(PLL3_Q, "pll3_q", PARENT("pll3"), 0, 1716 _GATE(RCC_PLL3CR, 5, 0), 1717 _NO_MUX, 1718 _DIV(RCC_PLL3CFGR2, 8, 7, 0, NULL)), 1719 1720 COMPOSITE(PLL3_R, "pll3_r", PARENT("pll3"), 0, 1721 _GATE(RCC_PLL3CR, 6, 0), 1722 _NO_MUX, 1723 _DIV(RCC_PLL3CFGR2, 16, 7, 0, NULL)), 1724 1725 COMPOSITE(PLL4_P, "pll4_p", PARENT("pll4"), 0, 1726 _GATE(RCC_PLL4CR, 4, 0), 1727 _NO_MUX, 1728 _DIV(RCC_PLL4CFGR2, 0, 7, 0, NULL)), 1729 1730 COMPOSITE(PLL4_Q, "pll4_q", PARENT("pll4"), 0, 1731 _GATE(RCC_PLL4CR, 5, 0), 1732 _NO_MUX, 1733 _DIV(RCC_PLL4CFGR2, 8, 7, 0, NULL)), 1734 1735 COMPOSITE(PLL4_R, "pll4_r", PARENT("pll4"), 0, 1736 _GATE(RCC_PLL4CR, 6, 0), 1737 _NO_MUX, 1738 _DIV(RCC_PLL4CFGR2, 16, 7, 0, NULL)), 1739 1740 /* MUX system clocks */ 1741 MUX(CK_PER, "ck_per", per_src, CLK_OPS_PARENT_ENABLE, 1742 RCC_CPERCKSELR, 0, 2, 0), 1743 1744 MUX(CK_MPU, "ck_mpu", cpu_src, CLK_OPS_PARENT_ENABLE | 1745 CLK_IS_CRITICAL, RCC_MPCKSELR, 0, 2, 0), 1746 1747 COMPOSITE(CK_AXI, "ck_axi", axi_src, CLK_IS_CRITICAL | 1748 CLK_OPS_PARENT_ENABLE, 1749 _NO_GATE, 1750 _MUX(RCC_ASSCKSELR, 0, 2, 0), 1751 _DIV(RCC_AXIDIVR, 0, 3, 0, axi_div_table)), 1752 1753 COMPOSITE(CK_MCU, "ck_mcu", mcu_src, CLK_IS_CRITICAL | 1754 CLK_OPS_PARENT_ENABLE, 1755 _NO_GATE, 1756 _MUX(RCC_MSSCKSELR, 0, 2, 0), 1757 _DIV(RCC_MCUDIVR, 0, 4, 0, mcu_div_table)), 1758 1759 DIV_TABLE(NO_ID, "pclk1", "ck_mcu", CLK_IGNORE_UNUSED, RCC_APB1DIVR, 0, 1760 3, CLK_DIVIDER_READ_ONLY, apb_div_table), 1761 1762 DIV_TABLE(NO_ID, "pclk2", "ck_mcu", CLK_IGNORE_UNUSED, RCC_APB2DIVR, 0, 1763 3, CLK_DIVIDER_READ_ONLY, apb_div_table), 1764 1765 DIV_TABLE(NO_ID, "pclk3", "ck_mcu", CLK_IGNORE_UNUSED, RCC_APB3DIVR, 0, 1766 3, CLK_DIVIDER_READ_ONLY, apb_div_table), 1767 1768 DIV_TABLE(NO_ID, "pclk4", "ck_axi", CLK_IGNORE_UNUSED, RCC_APB4DIVR, 0, 1769 3, CLK_DIVIDER_READ_ONLY, apb_div_table), 1770 1771 DIV_TABLE(NO_ID, "pclk5", "ck_axi", CLK_IGNORE_UNUSED, RCC_APB5DIVR, 0, 1772 3, CLK_DIVIDER_READ_ONLY, apb_div_table), 1773 1774 /* Kernel Timers */ 1775 STM32_CKTIM("ck1_tim", "pclk1", 0, RCC_APB1DIVR, RCC_TIMG1PRER), 1776 STM32_CKTIM("ck2_tim", "pclk2", 0, RCC_APB2DIVR, RCC_TIMG2PRER), 1777 1778 STM32_TIM(TIM2_K, "tim2_k", "ck1_tim", RCC_APB1ENSETR, 0), 1779 STM32_TIM(TIM3_K, "tim3_k", "ck1_tim", RCC_APB1ENSETR, 1), 1780 STM32_TIM(TIM4_K, "tim4_k", "ck1_tim", RCC_APB1ENSETR, 2), 1781 STM32_TIM(TIM5_K, "tim5_k", "ck1_tim", RCC_APB1ENSETR, 3), 1782 STM32_TIM(TIM6_K, "tim6_k", "ck1_tim", RCC_APB1ENSETR, 4), 1783 STM32_TIM(TIM7_K, "tim7_k", "ck1_tim", RCC_APB1ENSETR, 5), 1784 STM32_TIM(TIM12_K, "tim12_k", "ck1_tim", RCC_APB1ENSETR, 6), 1785 STM32_TIM(TIM13_K, "tim13_k", "ck1_tim", RCC_APB1ENSETR, 7), 1786 STM32_TIM(TIM14_K, "tim14_k", "ck1_tim", RCC_APB1ENSETR, 8), 1787 STM32_TIM(TIM1_K, "tim1_k", "ck2_tim", RCC_APB2ENSETR, 0), 1788 STM32_TIM(TIM8_K, "tim8_k", "ck2_tim", RCC_APB2ENSETR, 1), 1789 STM32_TIM(TIM15_K, "tim15_k", "ck2_tim", RCC_APB2ENSETR, 2), 1790 STM32_TIM(TIM16_K, "tim16_k", "ck2_tim", RCC_APB2ENSETR, 3), 1791 STM32_TIM(TIM17_K, "tim17_k", "ck2_tim", RCC_APB2ENSETR, 4), 1792 1793 /* Peripheral clocks */ 1794 PCLK(TIM2, "tim2", "pclk1", CLK_IGNORE_UNUSED, G_TIM2), 1795 PCLK(TIM3, "tim3", "pclk1", CLK_IGNORE_UNUSED, G_TIM3), 1796 PCLK(TIM4, "tim4", "pclk1", CLK_IGNORE_UNUSED, G_TIM4), 1797 PCLK(TIM5, "tim5", "pclk1", CLK_IGNORE_UNUSED, G_TIM5), 1798 PCLK(TIM6, "tim6", "pclk1", CLK_IGNORE_UNUSED, G_TIM6), 1799 PCLK(TIM7, "tim7", "pclk1", CLK_IGNORE_UNUSED, G_TIM7), 1800 PCLK(TIM12, "tim12", "pclk1", CLK_IGNORE_UNUSED, G_TIM12), 1801 PCLK(TIM13, "tim13", "pclk1", CLK_IGNORE_UNUSED, G_TIM13), 1802 PCLK(TIM14, "tim14", "pclk1", CLK_IGNORE_UNUSED, G_TIM14), 1803 PCLK(LPTIM1, "lptim1", "pclk1", 0, G_LPTIM1), 1804 PCLK(SPI2, "spi2", "pclk1", 0, G_SPI2), 1805 PCLK(SPI3, "spi3", "pclk1", 0, G_SPI3), 1806 PCLK(USART2, "usart2", "pclk1", 0, G_USART2), 1807 PCLK(USART3, "usart3", "pclk1", 0, G_USART3), 1808 PCLK(UART4, "uart4", "pclk1", 0, G_UART4), 1809 PCLK(UART5, "uart5", "pclk1", 0, G_UART5), 1810 PCLK(UART7, "uart7", "pclk1", 0, G_UART7), 1811 PCLK(UART8, "uart8", "pclk1", 0, G_UART8), 1812 PCLK(I2C1, "i2c1", "pclk1", 0, G_I2C1), 1813 PCLK(I2C2, "i2c2", "pclk1", 0, G_I2C2), 1814 PCLK(I2C3, "i2c3", "pclk1", 0, G_I2C3), 1815 PCLK(I2C5, "i2c5", "pclk1", 0, G_I2C5), 1816 PCLK(SPDIF, "spdif", "pclk1", 0, G_SPDIF), 1817 PCLK(CEC, "cec", "pclk1", 0, G_CEC), 1818 PCLK(DAC12, "dac12", "pclk1", 0, G_DAC12), 1819 PCLK(MDIO, "mdio", "pclk1", 0, G_MDIO), 1820 PCLK(TIM1, "tim1", "pclk2", CLK_IGNORE_UNUSED, G_TIM1), 1821 PCLK(TIM8, "tim8", "pclk2", CLK_IGNORE_UNUSED, G_TIM8), 1822 PCLK(TIM15, "tim15", "pclk2", CLK_IGNORE_UNUSED, G_TIM15), 1823 PCLK(TIM16, "tim16", "pclk2", CLK_IGNORE_UNUSED, G_TIM16), 1824 PCLK(TIM17, "tim17", "pclk2", CLK_IGNORE_UNUSED, G_TIM17), 1825 PCLK(SPI1, "spi1", "pclk2", 0, G_SPI1), 1826 PCLK(SPI4, "spi4", "pclk2", 0, G_SPI4), 1827 PCLK(SPI5, "spi5", "pclk2", 0, G_SPI5), 1828 PCLK(USART6, "usart6", "pclk2", 0, G_USART6), 1829 PCLK(SAI1, "sai1", "pclk2", 0, G_SAI1), 1830 PCLK(SAI2, "sai2", "pclk2", 0, G_SAI2), 1831 PCLK(SAI3, "sai3", "pclk2", 0, G_SAI3), 1832 PCLK(DFSDM, "dfsdm", "pclk2", 0, G_DFSDM), 1833 PCLK(FDCAN, "fdcan", "pclk2", 0, G_FDCAN), 1834 PCLK(LPTIM2, "lptim2", "pclk3", 0, G_LPTIM2), 1835 PCLK(LPTIM3, "lptim3", "pclk3", 0, G_LPTIM3), 1836 PCLK(LPTIM4, "lptim4", "pclk3", 0, G_LPTIM4), 1837 PCLK(LPTIM5, "lptim5", "pclk3", 0, G_LPTIM5), 1838 PCLK(SAI4, "sai4", "pclk3", 0, G_SAI4), 1839 PCLK(SYSCFG, "syscfg", "pclk3", 0, G_SYSCFG), 1840 PCLK(VREF, "vref", "pclk3", 13, G_VREF), 1841 PCLK(TMPSENS, "tmpsens", "pclk3", 0, G_TMPSENS), 1842 PCLK(PMBCTRL, "pmbctrl", "pclk3", 0, G_PMBCTRL), 1843 PCLK(HDP, "hdp", "pclk3", 0, G_HDP), 1844 PCLK(LTDC, "ltdc", "pclk4", 0, G_LTDC), 1845 PCLK(DSI, "dsi", "pclk4", 0, G_DSI), 1846 PCLK(IWDG2, "iwdg2", "pclk4", 0, G_IWDG2), 1847 PCLK(USBPHY, "usbphy", "pclk4", 0, G_USBPHY), 1848 PCLK(STGENRO, "stgenro", "pclk4", 0, G_STGENRO), 1849 PCLK(SPI6, "spi6", "pclk5", 0, G_SPI6), 1850 PCLK(I2C4, "i2c4", "pclk5", 0, G_I2C4), 1851 PCLK(I2C6, "i2c6", "pclk5", 0, G_I2C6), 1852 PCLK(USART1, "usart1", "pclk5", 0, G_USART1), 1853 PCLK(RTCAPB, "rtcapb", "pclk5", CLK_IGNORE_UNUSED | 1854 CLK_IS_CRITICAL, G_RTCAPB), 1855 PCLK(TZC1, "tzc1", "ck_axi", CLK_IGNORE_UNUSED, G_TZC1), 1856 PCLK(TZC2, "tzc2", "ck_axi", CLK_IGNORE_UNUSED, G_TZC2), 1857 PCLK(TZPC, "tzpc", "pclk5", CLK_IGNORE_UNUSED, G_TZPC), 1858 PCLK(IWDG1, "iwdg1", "pclk5", 0, G_IWDG1), 1859 PCLK(BSEC, "bsec", "pclk5", CLK_IGNORE_UNUSED, G_BSEC), 1860 PCLK(STGEN, "stgen", "pclk5", CLK_IGNORE_UNUSED, G_STGEN), 1861 PCLK(DMA1, "dma1", "ck_mcu", 0, G_DMA1), 1862 PCLK(DMA2, "dma2", "ck_mcu", 0, G_DMA2), 1863 PCLK(DMAMUX, "dmamux", "ck_mcu", 0, G_DMAMUX), 1864 PCLK(ADC12, "adc12", "ck_mcu", 0, G_ADC12), 1865 PCLK(USBO, "usbo", "ck_mcu", 0, G_USBO), 1866 PCLK(SDMMC3, "sdmmc3", "ck_mcu", 0, G_SDMMC3), 1867 PCLK(DCMI, "dcmi", "ck_mcu", 0, G_DCMI), 1868 PCLK(CRYP2, "cryp2", "ck_mcu", 0, G_CRYP2), 1869 PCLK(HASH2, "hash2", "ck_mcu", 0, G_HASH2), 1870 PCLK(RNG2, "rng2", "ck_mcu", 0, G_RNG2), 1871 PCLK(CRC2, "crc2", "ck_mcu", 0, G_CRC2), 1872 PCLK(HSEM, "hsem", "ck_mcu", 0, G_HSEM), 1873 PCLK(IPCC, "ipcc", "ck_mcu", 0, G_IPCC), 1874 PCLK(GPIOA, "gpioa", "ck_mcu", 0, G_GPIOA), 1875 PCLK(GPIOB, "gpiob", "ck_mcu", 0, G_GPIOB), 1876 PCLK(GPIOC, "gpioc", "ck_mcu", 0, G_GPIOC), 1877 PCLK(GPIOD, "gpiod", "ck_mcu", 0, G_GPIOD), 1878 PCLK(GPIOE, "gpioe", "ck_mcu", 0, G_GPIOE), 1879 PCLK(GPIOF, "gpiof", "ck_mcu", 0, G_GPIOF), 1880 PCLK(GPIOG, "gpiog", "ck_mcu", 0, G_GPIOG), 1881 PCLK(GPIOH, "gpioh", "ck_mcu", 0, G_GPIOH), 1882 PCLK(GPIOI, "gpioi", "ck_mcu", 0, G_GPIOI), 1883 PCLK(GPIOJ, "gpioj", "ck_mcu", 0, G_GPIOJ), 1884 PCLK(GPIOK, "gpiok", "ck_mcu", 0, G_GPIOK), 1885 PCLK(GPIOZ, "gpioz", "ck_axi", CLK_IGNORE_UNUSED, G_GPIOZ), 1886 PCLK(CRYP1, "cryp1", "ck_axi", CLK_IGNORE_UNUSED, G_CRYP1), 1887 PCLK(HASH1, "hash1", "ck_axi", CLK_IGNORE_UNUSED, G_HASH1), 1888 PCLK(RNG1, "rng1", "ck_axi", 0, G_RNG1), 1889 PCLK(BKPSRAM, "bkpsram", "ck_axi", CLK_IGNORE_UNUSED, G_BKPSRAM), 1890 PCLK(MDMA, "mdma", "ck_axi", 0, G_MDMA), 1891 PCLK(GPU, "gpu", "ck_axi", 0, G_GPU), 1892 PCLK(ETHTX, "ethtx", "ck_axi", 0, G_ETHTX), 1893 PCLK(ETHRX, "ethrx", "ck_axi", 0, G_ETHRX), 1894 PCLK(ETHMAC, "ethmac", "ck_axi", 0, G_ETHMAC), 1895 PCLK(FMC, "fmc", "ck_axi", CLK_IGNORE_UNUSED, G_FMC), 1896 PCLK(QSPI, "qspi", "ck_axi", CLK_IGNORE_UNUSED, G_QSPI), 1897 PCLK(SDMMC1, "sdmmc1", "ck_axi", 0, G_SDMMC1), 1898 PCLK(SDMMC2, "sdmmc2", "ck_axi", 0, G_SDMMC2), 1899 PCLK(CRC1, "crc1", "ck_axi", 0, G_CRC1), 1900 PCLK(USBH, "usbh", "ck_axi", 0, G_USBH), 1901 PCLK(ETHSTP, "ethstp", "ck_axi", 0, G_ETHSTP), 1902 1903 /* Kernel clocks */ 1904 KCLK(SDMMC1_K, "sdmmc1_k", sdmmc12_src, 0, G_SDMMC1, M_SDMMC12), 1905 KCLK(SDMMC2_K, "sdmmc2_k", sdmmc12_src, 0, G_SDMMC2, M_SDMMC12), 1906 KCLK(SDMMC3_K, "sdmmc3_k", sdmmc3_src, 0, G_SDMMC3, M_SDMMC3), 1907 KCLK(FMC_K, "fmc_k", fmc_src, 0, G_FMC, M_FMC), 1908 KCLK(QSPI_K, "qspi_k", qspi_src, 0, G_QSPI, M_QSPI), 1909 KCLK(RNG1_K, "rng1_k", rng_src, 0, G_RNG1, M_RNG1), 1910 KCLK(RNG2_K, "rng2_k", rng_src, 0, G_RNG2, M_RNG2), 1911 KCLK(USBPHY_K, "usbphy_k", usbphy_src, 0, G_USBPHY, M_USBPHY), 1912 KCLK(STGEN_K, "stgen_k", stgen_src, CLK_IS_CRITICAL, G_STGEN, M_STGEN), 1913 KCLK(SPDIF_K, "spdif_k", spdif_src, 0, G_SPDIF, M_SPDIF), 1914 KCLK(SPI1_K, "spi1_k", spi123_src, 0, G_SPI1, M_SPI1), 1915 KCLK(SPI2_K, "spi2_k", spi123_src, 0, G_SPI2, M_SPI23), 1916 KCLK(SPI3_K, "spi3_k", spi123_src, 0, G_SPI3, M_SPI23), 1917 KCLK(SPI4_K, "spi4_k", spi45_src, 0, G_SPI4, M_SPI45), 1918 KCLK(SPI5_K, "spi5_k", spi45_src, 0, G_SPI5, M_SPI45), 1919 KCLK(SPI6_K, "spi6_k", spi6_src, 0, G_SPI6, M_SPI6), 1920 KCLK(CEC_K, "cec_k", cec_src, 0, G_CEC, M_CEC), 1921 KCLK(I2C1_K, "i2c1_k", i2c12_src, 0, G_I2C1, M_I2C12), 1922 KCLK(I2C2_K, "i2c2_k", i2c12_src, 0, G_I2C2, M_I2C12), 1923 KCLK(I2C3_K, "i2c3_k", i2c35_src, 0, G_I2C3, M_I2C35), 1924 KCLK(I2C5_K, "i2c5_k", i2c35_src, 0, G_I2C5, M_I2C35), 1925 KCLK(I2C4_K, "i2c4_k", i2c46_src, 0, G_I2C4, M_I2C46), 1926 KCLK(I2C6_K, "i2c6_k", i2c46_src, 0, G_I2C6, M_I2C46), 1927 KCLK(LPTIM1_K, "lptim1_k", lptim1_src, 0, G_LPTIM1, M_LPTIM1), 1928 KCLK(LPTIM2_K, "lptim2_k", lptim23_src, 0, G_LPTIM2, M_LPTIM23), 1929 KCLK(LPTIM3_K, "lptim3_k", lptim23_src, 0, G_LPTIM3, M_LPTIM23), 1930 KCLK(LPTIM4_K, "lptim4_k", lptim45_src, 0, G_LPTIM4, M_LPTIM45), 1931 KCLK(LPTIM5_K, "lptim5_k", lptim45_src, 0, G_LPTIM5, M_LPTIM45), 1932 KCLK(USART1_K, "usart1_k", usart1_src, 0, G_USART1, M_USART1), 1933 KCLK(USART2_K, "usart2_k", usart234578_src, 0, G_USART2, M_UART24), 1934 KCLK(USART3_K, "usart3_k", usart234578_src, 0, G_USART3, M_UART35), 1935 KCLK(UART4_K, "uart4_k", usart234578_src, 0, G_UART4, M_UART24), 1936 KCLK(UART5_K, "uart5_k", usart234578_src, 0, G_UART5, M_UART35), 1937 KCLK(USART6_K, "uart6_k", usart6_src, 0, G_USART6, M_USART6), 1938 KCLK(UART7_K, "uart7_k", usart234578_src, 0, G_UART7, M_UART78), 1939 KCLK(UART8_K, "uart8_k", usart234578_src, 0, G_UART8, M_UART78), 1940 KCLK(FDCAN_K, "fdcan_k", fdcan_src, 0, G_FDCAN, M_FDCAN), 1941 KCLK(SAI1_K, "sai1_k", sai_src, 0, G_SAI1, M_SAI1), 1942 KCLK(SAI2_K, "sai2_k", sai2_src, 0, G_SAI2, M_SAI2), 1943 KCLK(SAI3_K, "sai3_k", sai_src, 0, G_SAI3, M_SAI3), 1944 KCLK(SAI4_K, "sai4_k", sai_src, 0, G_SAI4, M_SAI4), 1945 KCLK(ADC12_K, "adc12_k", adc12_src, 0, G_ADC12, M_ADC12), 1946 KCLK(DSI_K, "dsi_k", dsi_src, 0, G_DSI, M_DSI), 1947 KCLK(ADFSDM_K, "adfsdm_k", sai_src, 0, G_ADFSDM, M_SAI1), 1948 KCLK(USBO_K, "usbo_k", usbo_src, 0, G_USBO, M_USBO), 1949 KCLK(ETHCK_K, "ethck_k", eth_src, 0, G_ETHCK, M_ETHCK), 1950 1951 /* Particulary Kernel Clocks (no mux or no gate) */ 1952 MGATE_MP1(DFSDM_K, "dfsdm_k", "ck_mcu", 0, G_DFSDM), 1953 MGATE_MP1(DSI_PX, "dsi_px", "pll4_q", CLK_SET_RATE_PARENT, G_DSI), 1954 MGATE_MP1(LTDC_PX, "ltdc_px", "pll4_q", CLK_SET_RATE_PARENT, G_LTDC), 1955 MGATE_MP1(GPU_K, "gpu_k", "pll2_q", 0, G_GPU), 1956 MGATE_MP1(DAC12_K, "dac12_k", "ck_lsi", 0, G_DAC12), 1957 1958 COMPOSITE(ETHPTP_K, "ethptp_k", eth_src, CLK_OPS_PARENT_ENABLE | 1959 CLK_SET_RATE_NO_REPARENT, 1960 _NO_GATE, 1961 _MMUX(M_ETHCK), 1962 _DIV(RCC_ETHCKSELR, 4, 4, 0, NULL)), 1963 1964 /* RTC clock */ 1965 DIV(NO_ID, "ck_hse_rtc", "ck_hse", 0, RCC_RTCDIVR, 0, 6, 0), 1966 1967 COMPOSITE(RTC, "ck_rtc", rtc_src, CLK_OPS_PARENT_ENABLE | 1968 CLK_SET_RATE_PARENT, 1969 _GATE(RCC_BDCR, 20, 0), 1970 _MUX(RCC_BDCR, 16, 2, 0), 1971 _NO_DIV), 1972 1973 /* MCO clocks */ 1974 COMPOSITE(CK_MCO1, "ck_mco1", mco1_src, CLK_OPS_PARENT_ENABLE | 1975 CLK_SET_RATE_NO_REPARENT, 1976 _GATE(RCC_MCO1CFGR, 12, 0), 1977 _MUX(RCC_MCO1CFGR, 0, 3, 0), 1978 _DIV(RCC_MCO1CFGR, 4, 4, 0, NULL)), 1979 1980 COMPOSITE(CK_MCO2, "ck_mco2", mco2_src, CLK_OPS_PARENT_ENABLE | 1981 CLK_SET_RATE_NO_REPARENT, 1982 _GATE(RCC_MCO2CFGR, 12, 0), 1983 _MUX(RCC_MCO2CFGR, 0, 3, 0), 1984 _DIV(RCC_MCO2CFGR, 4, 4, 0, NULL)), 1985 1986 /* Debug clocks */ 1987 GATE(CK_DBG, "ck_sys_dbg", "ck_axi", CLK_IGNORE_UNUSED, 1988 RCC_DBGCFGR, 8, 0), 1989 1990 COMPOSITE(CK_TRACE, "ck_trace", ck_trace_src, CLK_OPS_PARENT_ENABLE, 1991 _GATE(RCC_DBGCFGR, 9, 0), 1992 _NO_MUX, 1993 _DIV(RCC_DBGCFGR, 0, 3, 0, ck_trace_div_table)), 1994 }; 1995 1996 struct stm32_clock_match_data { 1997 const struct clock_config *cfg; 1998 unsigned int num; 1999 unsigned int maxbinding; 2000 }; 2001 2002 static struct stm32_clock_match_data stm32mp1_data = { 2003 .cfg = stm32mp1_clock_cfg, 2004 .num = ARRAY_SIZE(stm32mp1_clock_cfg), 2005 .maxbinding = STM32MP1_LAST_CLK, 2006 }; 2007 2008 static const struct of_device_id stm32mp1_match_data[] = { 2009 { 2010 .compatible = "st,stm32mp1-rcc", 2011 .data = &stm32mp1_data, 2012 }, 2013 { } 2014 }; 2015 2016 static int stm32_register_hw_clk(struct device *dev, 2017 struct clk_hw_onecell_data *clk_data, 2018 void __iomem *base, spinlock_t *lock, 2019 const struct clock_config *cfg) 2020 { 2021 struct clk_hw **hws; 2022 struct clk_hw *hw = ERR_PTR(-ENOENT); 2023 2024 hws = clk_data->hws; 2025 2026 if (cfg->func) 2027 hw = (*cfg->func)(dev, clk_data, base, lock, cfg); 2028 2029 if (IS_ERR(hw)) { 2030 pr_err("Unable to register %s\n", cfg->name); 2031 return PTR_ERR(hw); 2032 } 2033 2034 if (cfg->id != NO_ID) 2035 hws[cfg->id] = hw; 2036 2037 return 0; 2038 } 2039 2040 static int stm32_rcc_init(struct device_node *np, 2041 void __iomem *base, 2042 const struct of_device_id *match_data) 2043 { 2044 struct clk_hw_onecell_data *clk_data; 2045 struct clk_hw **hws; 2046 const struct of_device_id *match; 2047 const struct stm32_clock_match_data *data; 2048 int err, n, max_binding; 2049 2050 match = of_match_node(match_data, np); 2051 if (!match) { 2052 pr_err("%s: match data not found\n", __func__); 2053 return -ENODEV; 2054 } 2055 2056 data = match->data; 2057 2058 max_binding = data->maxbinding; 2059 2060 clk_data = kzalloc(struct_size(clk_data, hws, max_binding), 2061 GFP_KERNEL); 2062 if (!clk_data) 2063 return -ENOMEM; 2064 2065 clk_data->num = max_binding; 2066 2067 hws = clk_data->hws; 2068 2069 for (n = 0; n < max_binding; n++) 2070 hws[n] = ERR_PTR(-ENOENT); 2071 2072 for (n = 0; n < data->num; n++) { 2073 err = stm32_register_hw_clk(NULL, clk_data, base, &rlock, 2074 &data->cfg[n]); 2075 if (err) { 2076 pr_err("%s: can't register %s\n", __func__, 2077 data->cfg[n].name); 2078 2079 kfree(clk_data); 2080 2081 return err; 2082 } 2083 } 2084 2085 return of_clk_add_hw_provider(np, of_clk_hw_onecell_get, clk_data); 2086 } 2087 2088 static void stm32mp1_rcc_init(struct device_node *np) 2089 { 2090 void __iomem *base; 2091 2092 base = of_iomap(np, 0); 2093 if (!base) { 2094 pr_err("%pOFn: unable to map resource", np); 2095 of_node_put(np); 2096 return; 2097 } 2098 2099 if (stm32_rcc_init(np, base, stm32mp1_match_data)) { 2100 iounmap(base); 2101 of_node_put(np); 2102 } 2103 } 2104 2105 CLK_OF_DECLARE_DRIVER(stm32mp1_rcc, "st,stm32mp1-rcc", stm32mp1_rcc_init); 2106