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/module.h> 14 #include <linux/of.h> 15 #include <linux/of_address.h> 16 #include <linux/platform_device.h> 17 #include <linux/reset-controller.h> 18 #include <linux/slab.h> 19 #include <linux/spinlock.h> 20 21 #include <dt-bindings/clock/stm32mp1-clks.h> 22 23 static DEFINE_SPINLOCK(rlock); 24 25 #define RCC_OCENSETR 0x0C 26 #define RCC_HSICFGR 0x18 27 #define RCC_RDLSICR 0x144 28 #define RCC_PLL1CR 0x80 29 #define RCC_PLL1CFGR1 0x84 30 #define RCC_PLL1CFGR2 0x88 31 #define RCC_PLL2CR 0x94 32 #define RCC_PLL2CFGR1 0x98 33 #define RCC_PLL2CFGR2 0x9C 34 #define RCC_PLL3CR 0x880 35 #define RCC_PLL3CFGR1 0x884 36 #define RCC_PLL3CFGR2 0x888 37 #define RCC_PLL4CR 0x894 38 #define RCC_PLL4CFGR1 0x898 39 #define RCC_PLL4CFGR2 0x89C 40 #define RCC_APB1ENSETR 0xA00 41 #define RCC_APB2ENSETR 0xA08 42 #define RCC_APB3ENSETR 0xA10 43 #define RCC_APB4ENSETR 0x200 44 #define RCC_APB5ENSETR 0x208 45 #define RCC_AHB2ENSETR 0xA18 46 #define RCC_AHB3ENSETR 0xA20 47 #define RCC_AHB4ENSETR 0xA28 48 #define RCC_AHB5ENSETR 0x210 49 #define RCC_AHB6ENSETR 0x218 50 #define RCC_AHB6LPENSETR 0x318 51 #define RCC_RCK12SELR 0x28 52 #define RCC_RCK3SELR 0x820 53 #define RCC_RCK4SELR 0x824 54 #define RCC_MPCKSELR 0x20 55 #define RCC_ASSCKSELR 0x24 56 #define RCC_MSSCKSELR 0x48 57 #define RCC_SPI6CKSELR 0xC4 58 #define RCC_SDMMC12CKSELR 0x8F4 59 #define RCC_SDMMC3CKSELR 0x8F8 60 #define RCC_FMCCKSELR 0x904 61 #define RCC_I2C46CKSELR 0xC0 62 #define RCC_I2C12CKSELR 0x8C0 63 #define RCC_I2C35CKSELR 0x8C4 64 #define RCC_UART1CKSELR 0xC8 65 #define RCC_QSPICKSELR 0x900 66 #define RCC_ETHCKSELR 0x8FC 67 #define RCC_RNG1CKSELR 0xCC 68 #define RCC_RNG2CKSELR 0x920 69 #define RCC_GPUCKSELR 0x938 70 #define RCC_USBCKSELR 0x91C 71 #define RCC_STGENCKSELR 0xD4 72 #define RCC_SPDIFCKSELR 0x914 73 #define RCC_SPI2S1CKSELR 0x8D8 74 #define RCC_SPI2S23CKSELR 0x8DC 75 #define RCC_SPI2S45CKSELR 0x8E0 76 #define RCC_CECCKSELR 0x918 77 #define RCC_LPTIM1CKSELR 0x934 78 #define RCC_LPTIM23CKSELR 0x930 79 #define RCC_LPTIM45CKSELR 0x92C 80 #define RCC_UART24CKSELR 0x8E8 81 #define RCC_UART35CKSELR 0x8EC 82 #define RCC_UART6CKSELR 0x8E4 83 #define RCC_UART78CKSELR 0x8F0 84 #define RCC_FDCANCKSELR 0x90C 85 #define RCC_SAI1CKSELR 0x8C8 86 #define RCC_SAI2CKSELR 0x8CC 87 #define RCC_SAI3CKSELR 0x8D0 88 #define RCC_SAI4CKSELR 0x8D4 89 #define RCC_ADCCKSELR 0x928 90 #define RCC_MPCKDIVR 0x2C 91 #define RCC_DSICKSELR 0x924 92 #define RCC_CPERCKSELR 0xD0 93 #define RCC_MCO1CFGR 0x800 94 #define RCC_MCO2CFGR 0x804 95 #define RCC_BDCR 0x140 96 #define RCC_AXIDIVR 0x30 97 #define RCC_MCUDIVR 0x830 98 #define RCC_APB1DIVR 0x834 99 #define RCC_APB2DIVR 0x838 100 #define RCC_APB3DIVR 0x83C 101 #define RCC_APB4DIVR 0x3C 102 #define RCC_APB5DIVR 0x40 103 #define RCC_TIMG1PRER 0x828 104 #define RCC_TIMG2PRER 0x82C 105 #define RCC_RTCDIVR 0x44 106 #define RCC_DBGCFGR 0x80C 107 108 #define RCC_CLR 0x4 109 110 static const char * const ref12_parents[] = { 111 "ck_hsi", "ck_hse" 112 }; 113 114 static const char * const ref3_parents[] = { 115 "ck_hsi", "ck_hse", "ck_csi" 116 }; 117 118 static const char * const ref4_parents[] = { 119 "ck_hsi", "ck_hse", "ck_csi" 120 }; 121 122 static const char * const cpu_src[] = { 123 "ck_hsi", "ck_hse", "pll1_p" 124 }; 125 126 static const char * const axi_src[] = { 127 "ck_hsi", "ck_hse", "pll2_p" 128 }; 129 130 static const char * const per_src[] = { 131 "ck_hsi", "ck_csi", "ck_hse" 132 }; 133 134 static const char * const mcu_src[] = { 135 "ck_hsi", "ck_hse", "ck_csi", "pll3_p" 136 }; 137 138 static const char * const sdmmc12_src[] = { 139 "ck_axi", "pll3_r", "pll4_p", "ck_hsi" 140 }; 141 142 static const char * const sdmmc3_src[] = { 143 "ck_mcu", "pll3_r", "pll4_p", "ck_hsi" 144 }; 145 146 static const char * const fmc_src[] = { 147 "ck_axi", "pll3_r", "pll4_p", "ck_per" 148 }; 149 150 static const char * const qspi_src[] = { 151 "ck_axi", "pll3_r", "pll4_p", "ck_per" 152 }; 153 154 static const char * const eth_src[] = { 155 "pll4_p", "pll3_q" 156 }; 157 158 static const struct clk_parent_data ethrx_src[] = { 159 { .name = "ethck_k", .fw_name = "ETH_RX_CLK/ETH_REF_CLK" }, 160 }; 161 162 static const char * const rng_src[] = { 163 "ck_csi", "pll4_r", "ck_lse", "ck_lsi" 164 }; 165 166 static const char * const usbphy_src[] = { 167 "ck_hse", "pll4_r", "clk-hse-div2" 168 }; 169 170 static const char * const usbo_src[] = { 171 "pll4_r", "ck_usbo_48m" 172 }; 173 174 static const char * const stgen_src[] = { 175 "ck_hsi", "ck_hse" 176 }; 177 178 static const char * const spdif_src[] = { 179 "pll4_p", "pll3_q", "ck_hsi" 180 }; 181 182 static const char * const spi123_src[] = { 183 "pll4_p", "pll3_q", "i2s_ckin", "ck_per", "pll3_r" 184 }; 185 186 static const char * const spi45_src[] = { 187 "pclk2", "pll4_q", "ck_hsi", "ck_csi", "ck_hse" 188 }; 189 190 static const char * const spi6_src[] = { 191 "pclk5", "pll4_q", "ck_hsi", "ck_csi", "ck_hse", "pll3_q" 192 }; 193 194 static const char * const cec_src[] = { 195 "ck_lse", "ck_lsi", "ck_csi" 196 }; 197 198 static const char * const i2c12_src[] = { 199 "pclk1", "pll4_r", "ck_hsi", "ck_csi" 200 }; 201 202 static const char * const i2c35_src[] = { 203 "pclk1", "pll4_r", "ck_hsi", "ck_csi" 204 }; 205 206 static const char * const i2c46_src[] = { 207 "pclk5", "pll3_q", "ck_hsi", "ck_csi" 208 }; 209 210 static const char * const lptim1_src[] = { 211 "pclk1", "pll4_p", "pll3_q", "ck_lse", "ck_lsi", "ck_per" 212 }; 213 214 static const char * const lptim23_src[] = { 215 "pclk3", "pll4_q", "ck_per", "ck_lse", "ck_lsi" 216 }; 217 218 static const char * const lptim45_src[] = { 219 "pclk3", "pll4_p", "pll3_q", "ck_lse", "ck_lsi", "ck_per" 220 }; 221 222 static const char * const usart1_src[] = { 223 "pclk5", "pll3_q", "ck_hsi", "ck_csi", "pll4_q", "ck_hse" 224 }; 225 226 static const char * const usart234578_src[] = { 227 "pclk1", "pll4_q", "ck_hsi", "ck_csi", "ck_hse" 228 }; 229 230 static const char * const usart6_src[] = { 231 "pclk2", "pll4_q", "ck_hsi", "ck_csi", "ck_hse" 232 }; 233 234 static const char * const fdcan_src[] = { 235 "ck_hse", "pll3_q", "pll4_q", "pll4_r" 236 }; 237 238 static const char * const sai_src[] = { 239 "pll4_q", "pll3_q", "i2s_ckin", "ck_per", "pll3_r" 240 }; 241 242 static const char * const sai2_src[] = { 243 "pll4_q", "pll3_q", "i2s_ckin", "ck_per", "spdif_ck_symb", "pll3_r" 244 }; 245 246 static const char * const adc12_src[] = { 247 "pll4_r", "ck_per", "pll3_q" 248 }; 249 250 static const char * const dsi_src[] = { 251 "ck_dsi_phy", "pll4_p" 252 }; 253 254 static const char * const rtc_src[] = { 255 "off", "ck_lse", "ck_lsi", "ck_hse" 256 }; 257 258 static const char * const mco1_src[] = { 259 "ck_hsi", "ck_hse", "ck_csi", "ck_lsi", "ck_lse" 260 }; 261 262 static const char * const mco2_src[] = { 263 "ck_mpu", "ck_axi", "ck_mcu", "pll4_p", "ck_hse", "ck_hsi" 264 }; 265 266 static const char * const ck_trace_src[] = { 267 "ck_axi" 268 }; 269 270 static const struct clk_div_table axi_div_table[] = { 271 { 0, 1 }, { 1, 2 }, { 2, 3 }, { 3, 4 }, 272 { 4, 4 }, { 5, 4 }, { 6, 4 }, { 7, 4 }, 273 { 0 }, 274 }; 275 276 static const struct clk_div_table mcu_div_table[] = { 277 { 0, 1 }, { 1, 2 }, { 2, 4 }, { 3, 8 }, 278 { 4, 16 }, { 5, 32 }, { 6, 64 }, { 7, 128 }, 279 { 8, 256 }, { 9, 512 }, { 10, 512}, { 11, 512 }, 280 { 12, 512 }, { 13, 512 }, { 14, 512}, { 15, 512 }, 281 { 0 }, 282 }; 283 284 static const struct clk_div_table apb_div_table[] = { 285 { 0, 1 }, { 1, 2 }, { 2, 4 }, { 3, 8 }, 286 { 4, 16 }, { 5, 16 }, { 6, 16 }, { 7, 16 }, 287 { 0 }, 288 }; 289 290 static const struct clk_div_table ck_trace_div_table[] = { 291 { 0, 1 }, { 1, 2 }, { 2, 4 }, { 3, 8 }, 292 { 4, 16 }, { 5, 16 }, { 6, 16 }, { 7, 16 }, 293 { 0 }, 294 }; 295 296 #define MAX_MUX_CLK 2 297 298 struct stm32_mmux { 299 u8 nbr_clk; 300 struct clk_hw *hws[MAX_MUX_CLK]; 301 }; 302 303 struct stm32_clk_mmux { 304 struct clk_mux mux; 305 struct stm32_mmux *mmux; 306 }; 307 308 struct stm32_mgate { 309 u8 nbr_clk; 310 u32 flag; 311 }; 312 313 struct stm32_clk_mgate { 314 struct clk_gate gate; 315 struct stm32_mgate *mgate; 316 u32 mask; 317 }; 318 319 struct clock_config { 320 u32 id; 321 const char *name; 322 const char *parent_name; 323 const char * const *parent_names; 324 const struct clk_parent_data *parent_data; 325 int num_parents; 326 unsigned long flags; 327 void *cfg; 328 struct clk_hw * (*func)(struct device *dev, 329 struct clk_hw_onecell_data *clk_data, 330 void __iomem *base, spinlock_t *lock, 331 const struct clock_config *cfg); 332 }; 333 334 #define NO_ID ~0 335 336 struct gate_cfg { 337 u32 reg_off; 338 u8 bit_idx; 339 u8 gate_flags; 340 }; 341 342 struct fixed_factor_cfg { 343 unsigned int mult; 344 unsigned int div; 345 }; 346 347 struct div_cfg { 348 u32 reg_off; 349 u8 shift; 350 u8 width; 351 u8 div_flags; 352 const struct clk_div_table *table; 353 }; 354 355 struct mux_cfg { 356 u32 reg_off; 357 u8 shift; 358 u8 width; 359 u8 mux_flags; 360 u32 *table; 361 }; 362 363 struct stm32_gate_cfg { 364 struct gate_cfg *gate; 365 struct stm32_mgate *mgate; 366 const struct clk_ops *ops; 367 }; 368 369 struct stm32_div_cfg { 370 struct div_cfg *div; 371 const struct clk_ops *ops; 372 }; 373 374 struct stm32_mux_cfg { 375 struct mux_cfg *mux; 376 struct stm32_mmux *mmux; 377 const struct clk_ops *ops; 378 }; 379 380 /* STM32 Composite clock */ 381 struct stm32_composite_cfg { 382 const struct stm32_gate_cfg *gate; 383 const struct stm32_div_cfg *div; 384 const struct stm32_mux_cfg *mux; 385 }; 386 387 static struct clk_hw * 388 _clk_hw_register_gate(struct device *dev, 389 struct clk_hw_onecell_data *clk_data, 390 void __iomem *base, spinlock_t *lock, 391 const struct clock_config *cfg) 392 { 393 struct gate_cfg *gate_cfg = cfg->cfg; 394 395 return clk_hw_register_gate(dev, 396 cfg->name, 397 cfg->parent_name, 398 cfg->flags, 399 gate_cfg->reg_off + base, 400 gate_cfg->bit_idx, 401 gate_cfg->gate_flags, 402 lock); 403 } 404 405 static struct clk_hw * 406 _clk_hw_register_fixed_factor(struct device *dev, 407 struct clk_hw_onecell_data *clk_data, 408 void __iomem *base, spinlock_t *lock, 409 const struct clock_config *cfg) 410 { 411 struct fixed_factor_cfg *ff_cfg = cfg->cfg; 412 413 return clk_hw_register_fixed_factor(dev, cfg->name, cfg->parent_name, 414 cfg->flags, ff_cfg->mult, 415 ff_cfg->div); 416 } 417 418 static struct clk_hw * 419 _clk_hw_register_divider_table(struct device *dev, 420 struct clk_hw_onecell_data *clk_data, 421 void __iomem *base, spinlock_t *lock, 422 const struct clock_config *cfg) 423 { 424 struct div_cfg *div_cfg = cfg->cfg; 425 426 return clk_hw_register_divider_table(dev, 427 cfg->name, 428 cfg->parent_name, 429 cfg->flags, 430 div_cfg->reg_off + base, 431 div_cfg->shift, 432 div_cfg->width, 433 div_cfg->div_flags, 434 div_cfg->table, 435 lock); 436 } 437 438 static struct clk_hw * 439 _clk_hw_register_mux(struct device *dev, 440 struct clk_hw_onecell_data *clk_data, 441 void __iomem *base, spinlock_t *lock, 442 const struct clock_config *cfg) 443 { 444 struct mux_cfg *mux_cfg = cfg->cfg; 445 446 return clk_hw_register_mux(dev, cfg->name, cfg->parent_names, 447 cfg->num_parents, cfg->flags, 448 mux_cfg->reg_off + base, mux_cfg->shift, 449 mux_cfg->width, mux_cfg->mux_flags, lock); 450 } 451 452 /* MP1 Gate clock with set & clear registers */ 453 454 static int mp1_gate_clk_enable(struct clk_hw *hw) 455 { 456 if (!clk_gate_ops.is_enabled(hw)) 457 clk_gate_ops.enable(hw); 458 459 return 0; 460 } 461 462 static void mp1_gate_clk_disable(struct clk_hw *hw) 463 { 464 struct clk_gate *gate = to_clk_gate(hw); 465 unsigned long flags = 0; 466 467 if (clk_gate_ops.is_enabled(hw)) { 468 spin_lock_irqsave(gate->lock, flags); 469 writel_relaxed(BIT(gate->bit_idx), gate->reg + RCC_CLR); 470 spin_unlock_irqrestore(gate->lock, flags); 471 } 472 } 473 474 static const struct clk_ops mp1_gate_clk_ops = { 475 .enable = mp1_gate_clk_enable, 476 .disable = mp1_gate_clk_disable, 477 .is_enabled = clk_gate_is_enabled, 478 }; 479 480 static struct clk_hw *_get_stm32_mux(struct device *dev, void __iomem *base, 481 const struct stm32_mux_cfg *cfg, 482 spinlock_t *lock) 483 { 484 struct stm32_clk_mmux *mmux; 485 struct clk_mux *mux; 486 struct clk_hw *mux_hw; 487 488 if (cfg->mmux) { 489 mmux = devm_kzalloc(dev, sizeof(*mmux), GFP_KERNEL); 490 if (!mmux) 491 return ERR_PTR(-ENOMEM); 492 493 mmux->mux.reg = cfg->mux->reg_off + base; 494 mmux->mux.shift = cfg->mux->shift; 495 mmux->mux.mask = (1 << cfg->mux->width) - 1; 496 mmux->mux.flags = cfg->mux->mux_flags; 497 mmux->mux.table = cfg->mux->table; 498 mmux->mux.lock = lock; 499 mmux->mmux = cfg->mmux; 500 mux_hw = &mmux->mux.hw; 501 cfg->mmux->hws[cfg->mmux->nbr_clk++] = mux_hw; 502 503 } else { 504 mux = devm_kzalloc(dev, sizeof(*mux), GFP_KERNEL); 505 if (!mux) 506 return ERR_PTR(-ENOMEM); 507 508 mux->reg = cfg->mux->reg_off + base; 509 mux->shift = cfg->mux->shift; 510 mux->mask = (1 << cfg->mux->width) - 1; 511 mux->flags = cfg->mux->mux_flags; 512 mux->table = cfg->mux->table; 513 mux->lock = lock; 514 mux_hw = &mux->hw; 515 } 516 517 return mux_hw; 518 } 519 520 static struct clk_hw *_get_stm32_div(struct device *dev, void __iomem *base, 521 const struct stm32_div_cfg *cfg, 522 spinlock_t *lock) 523 { 524 struct clk_divider *div; 525 526 div = devm_kzalloc(dev, sizeof(*div), GFP_KERNEL); 527 528 if (!div) 529 return ERR_PTR(-ENOMEM); 530 531 div->reg = cfg->div->reg_off + base; 532 div->shift = cfg->div->shift; 533 div->width = cfg->div->width; 534 div->flags = cfg->div->div_flags; 535 div->table = cfg->div->table; 536 div->lock = lock; 537 538 return &div->hw; 539 } 540 541 static struct clk_hw *_get_stm32_gate(struct device *dev, void __iomem *base, 542 const struct stm32_gate_cfg *cfg, 543 spinlock_t *lock) 544 { 545 struct stm32_clk_mgate *mgate; 546 struct clk_gate *gate; 547 struct clk_hw *gate_hw; 548 549 if (cfg->mgate) { 550 mgate = devm_kzalloc(dev, sizeof(*mgate), GFP_KERNEL); 551 if (!mgate) 552 return ERR_PTR(-ENOMEM); 553 554 mgate->gate.reg = cfg->gate->reg_off + base; 555 mgate->gate.bit_idx = cfg->gate->bit_idx; 556 mgate->gate.flags = cfg->gate->gate_flags; 557 mgate->gate.lock = lock; 558 mgate->mask = BIT(cfg->mgate->nbr_clk++); 559 560 mgate->mgate = cfg->mgate; 561 562 gate_hw = &mgate->gate.hw; 563 564 } else { 565 gate = devm_kzalloc(dev, sizeof(*gate), GFP_KERNEL); 566 if (!gate) 567 return ERR_PTR(-ENOMEM); 568 569 gate->reg = cfg->gate->reg_off + base; 570 gate->bit_idx = cfg->gate->bit_idx; 571 gate->flags = cfg->gate->gate_flags; 572 gate->lock = lock; 573 574 gate_hw = &gate->hw; 575 } 576 577 return gate_hw; 578 } 579 580 static struct clk_hw * 581 clk_stm32_register_gate_ops(struct device *dev, 582 const char *name, 583 const char *parent_name, 584 const struct clk_parent_data *parent_data, 585 unsigned long flags, 586 void __iomem *base, 587 const struct stm32_gate_cfg *cfg, 588 spinlock_t *lock) 589 { 590 struct clk_init_data init = { NULL }; 591 struct clk_hw *hw; 592 int ret; 593 594 init.name = name; 595 if (parent_name) 596 init.parent_names = &parent_name; 597 if (parent_data) 598 init.parent_data = parent_data; 599 init.num_parents = 1; 600 init.flags = flags; 601 602 init.ops = &clk_gate_ops; 603 604 if (cfg->ops) 605 init.ops = cfg->ops; 606 607 hw = _get_stm32_gate(dev, base, cfg, lock); 608 if (IS_ERR(hw)) 609 return ERR_PTR(-ENOMEM); 610 611 hw->init = &init; 612 613 ret = clk_hw_register(dev, hw); 614 if (ret) 615 hw = ERR_PTR(ret); 616 617 return hw; 618 } 619 620 static struct clk_hw * 621 clk_stm32_register_composite(struct device *dev, 622 const char *name, const char * const *parent_names, 623 const struct clk_parent_data *parent_data, 624 int num_parents, void __iomem *base, 625 const struct stm32_composite_cfg *cfg, 626 unsigned long flags, spinlock_t *lock) 627 { 628 const struct clk_ops *mux_ops, *div_ops, *gate_ops; 629 struct clk_hw *mux_hw, *div_hw, *gate_hw; 630 631 mux_hw = NULL; 632 div_hw = NULL; 633 gate_hw = NULL; 634 mux_ops = NULL; 635 div_ops = NULL; 636 gate_ops = NULL; 637 638 if (cfg->mux) { 639 mux_hw = _get_stm32_mux(dev, base, cfg->mux, lock); 640 641 if (!IS_ERR(mux_hw)) { 642 mux_ops = &clk_mux_ops; 643 644 if (cfg->mux->ops) 645 mux_ops = cfg->mux->ops; 646 } 647 } 648 649 if (cfg->div) { 650 div_hw = _get_stm32_div(dev, base, cfg->div, lock); 651 652 if (!IS_ERR(div_hw)) { 653 div_ops = &clk_divider_ops; 654 655 if (cfg->div->ops) 656 div_ops = cfg->div->ops; 657 } 658 } 659 660 if (cfg->gate) { 661 gate_hw = _get_stm32_gate(dev, base, cfg->gate, lock); 662 663 if (!IS_ERR(gate_hw)) { 664 gate_ops = &clk_gate_ops; 665 666 if (cfg->gate->ops) 667 gate_ops = cfg->gate->ops; 668 } 669 } 670 671 return clk_hw_register_composite(dev, name, parent_names, num_parents, 672 mux_hw, mux_ops, div_hw, div_ops, 673 gate_hw, gate_ops, flags); 674 } 675 676 #define to_clk_mgate(_gate) container_of(_gate, struct stm32_clk_mgate, gate) 677 678 static int mp1_mgate_clk_enable(struct clk_hw *hw) 679 { 680 struct clk_gate *gate = to_clk_gate(hw); 681 struct stm32_clk_mgate *clk_mgate = to_clk_mgate(gate); 682 683 clk_mgate->mgate->flag |= clk_mgate->mask; 684 685 mp1_gate_clk_enable(hw); 686 687 return 0; 688 } 689 690 static void mp1_mgate_clk_disable(struct clk_hw *hw) 691 { 692 struct clk_gate *gate = to_clk_gate(hw); 693 struct stm32_clk_mgate *clk_mgate = to_clk_mgate(gate); 694 695 clk_mgate->mgate->flag &= ~clk_mgate->mask; 696 697 if (clk_mgate->mgate->flag == 0) 698 mp1_gate_clk_disable(hw); 699 } 700 701 static const struct clk_ops mp1_mgate_clk_ops = { 702 .enable = mp1_mgate_clk_enable, 703 .disable = mp1_mgate_clk_disable, 704 .is_enabled = clk_gate_is_enabled, 705 706 }; 707 708 #define to_clk_mmux(_mux) container_of(_mux, struct stm32_clk_mmux, mux) 709 710 static u8 clk_mmux_get_parent(struct clk_hw *hw) 711 { 712 return clk_mux_ops.get_parent(hw); 713 } 714 715 static int clk_mmux_set_parent(struct clk_hw *hw, u8 index) 716 { 717 struct clk_mux *mux = to_clk_mux(hw); 718 struct stm32_clk_mmux *clk_mmux = to_clk_mmux(mux); 719 struct clk_hw *hwp; 720 int ret, n; 721 722 ret = clk_mux_ops.set_parent(hw, index); 723 if (ret) 724 return ret; 725 726 hwp = clk_hw_get_parent(hw); 727 728 for (n = 0; n < clk_mmux->mmux->nbr_clk; n++) 729 if (clk_mmux->mmux->hws[n] != hw) 730 clk_hw_reparent(clk_mmux->mmux->hws[n], hwp); 731 732 return 0; 733 } 734 735 static const struct clk_ops clk_mmux_ops = { 736 .get_parent = clk_mmux_get_parent, 737 .set_parent = clk_mmux_set_parent, 738 .determine_rate = __clk_mux_determine_rate, 739 }; 740 741 /* STM32 PLL */ 742 struct stm32_pll_obj { 743 /* lock pll enable/disable registers */ 744 spinlock_t *lock; 745 void __iomem *reg; 746 struct clk_hw hw; 747 struct clk_mux mux; 748 }; 749 750 #define to_pll(_hw) container_of(_hw, struct stm32_pll_obj, hw) 751 752 #define PLL_ON BIT(0) 753 #define PLL_RDY BIT(1) 754 #define DIVN_MASK 0x1FF 755 #define DIVM_MASK 0x3F 756 #define DIVM_SHIFT 16 757 #define DIVN_SHIFT 0 758 #define FRAC_OFFSET 0xC 759 #define FRAC_MASK 0x1FFF 760 #define FRAC_SHIFT 3 761 #define FRACLE BIT(16) 762 #define PLL_MUX_SHIFT 0 763 #define PLL_MUX_MASK 3 764 765 static int __pll_is_enabled(struct clk_hw *hw) 766 { 767 struct stm32_pll_obj *clk_elem = to_pll(hw); 768 769 return readl_relaxed(clk_elem->reg) & PLL_ON; 770 } 771 772 #define TIMEOUT 5 773 774 static int pll_enable(struct clk_hw *hw) 775 { 776 struct stm32_pll_obj *clk_elem = to_pll(hw); 777 u32 reg; 778 unsigned long flags = 0; 779 unsigned int timeout = TIMEOUT; 780 int bit_status = 0; 781 782 spin_lock_irqsave(clk_elem->lock, flags); 783 784 if (__pll_is_enabled(hw)) 785 goto unlock; 786 787 reg = readl_relaxed(clk_elem->reg); 788 reg |= PLL_ON; 789 writel_relaxed(reg, clk_elem->reg); 790 791 /* We can't use readl_poll_timeout() because we can be blocked if 792 * someone enables this clock before clocksource changes. 793 * Only jiffies counter is available. Jiffies are incremented by 794 * interruptions and enable op does not allow to be interrupted. 795 */ 796 do { 797 bit_status = !(readl_relaxed(clk_elem->reg) & PLL_RDY); 798 799 if (bit_status) 800 udelay(120); 801 802 } while (bit_status && --timeout); 803 804 unlock: 805 spin_unlock_irqrestore(clk_elem->lock, flags); 806 807 return bit_status; 808 } 809 810 static void pll_disable(struct clk_hw *hw) 811 { 812 struct stm32_pll_obj *clk_elem = to_pll(hw); 813 u32 reg; 814 unsigned long flags = 0; 815 816 spin_lock_irqsave(clk_elem->lock, flags); 817 818 reg = readl_relaxed(clk_elem->reg); 819 reg &= ~PLL_ON; 820 writel_relaxed(reg, clk_elem->reg); 821 822 spin_unlock_irqrestore(clk_elem->lock, flags); 823 } 824 825 static u32 pll_frac_val(struct clk_hw *hw) 826 { 827 struct stm32_pll_obj *clk_elem = to_pll(hw); 828 u32 reg, frac = 0; 829 830 reg = readl_relaxed(clk_elem->reg + FRAC_OFFSET); 831 if (reg & FRACLE) 832 frac = (reg >> FRAC_SHIFT) & FRAC_MASK; 833 834 return frac; 835 } 836 837 static unsigned long pll_recalc_rate(struct clk_hw *hw, 838 unsigned long parent_rate) 839 { 840 struct stm32_pll_obj *clk_elem = to_pll(hw); 841 u32 reg; 842 u32 frac, divm, divn; 843 u64 rate, rate_frac = 0; 844 845 reg = readl_relaxed(clk_elem->reg + 4); 846 847 divm = ((reg >> DIVM_SHIFT) & DIVM_MASK) + 1; 848 divn = ((reg >> DIVN_SHIFT) & DIVN_MASK) + 1; 849 rate = (u64)parent_rate * divn; 850 851 do_div(rate, divm); 852 853 frac = pll_frac_val(hw); 854 if (frac) { 855 rate_frac = (u64)parent_rate * (u64)frac; 856 do_div(rate_frac, (divm * 8192)); 857 } 858 859 return rate + rate_frac; 860 } 861 862 static int pll_is_enabled(struct clk_hw *hw) 863 { 864 struct stm32_pll_obj *clk_elem = to_pll(hw); 865 unsigned long flags = 0; 866 int ret; 867 868 spin_lock_irqsave(clk_elem->lock, flags); 869 ret = __pll_is_enabled(hw); 870 spin_unlock_irqrestore(clk_elem->lock, flags); 871 872 return ret; 873 } 874 875 static u8 pll_get_parent(struct clk_hw *hw) 876 { 877 struct stm32_pll_obj *clk_elem = to_pll(hw); 878 struct clk_hw *mux_hw = &clk_elem->mux.hw; 879 880 __clk_hw_set_clk(mux_hw, hw); 881 882 return clk_mux_ops.get_parent(mux_hw); 883 } 884 885 static const struct clk_ops pll_ops = { 886 .enable = pll_enable, 887 .disable = pll_disable, 888 .recalc_rate = pll_recalc_rate, 889 .is_enabled = pll_is_enabled, 890 .get_parent = pll_get_parent, 891 }; 892 893 static struct clk_hw *clk_register_pll(struct device *dev, const char *name, 894 const char * const *parent_names, 895 int num_parents, 896 void __iomem *reg, 897 void __iomem *mux_reg, 898 unsigned long flags, 899 spinlock_t *lock) 900 { 901 struct stm32_pll_obj *element; 902 struct clk_init_data init; 903 struct clk_hw *hw; 904 int err; 905 906 element = devm_kzalloc(dev, sizeof(*element), GFP_KERNEL); 907 if (!element) 908 return ERR_PTR(-ENOMEM); 909 910 init.name = name; 911 init.ops = &pll_ops; 912 init.flags = flags; 913 init.parent_names = parent_names; 914 init.num_parents = num_parents; 915 916 element->mux.lock = lock; 917 element->mux.reg = mux_reg; 918 element->mux.shift = PLL_MUX_SHIFT; 919 element->mux.mask = PLL_MUX_MASK; 920 element->mux.flags = CLK_MUX_READ_ONLY; 921 element->mux.reg = mux_reg; 922 923 element->hw.init = &init; 924 element->reg = reg; 925 element->lock = lock; 926 927 hw = &element->hw; 928 err = clk_hw_register(dev, hw); 929 930 if (err) 931 return ERR_PTR(err); 932 933 return hw; 934 } 935 936 /* Kernel Timer */ 937 struct timer_cker { 938 /* lock the kernel output divider register */ 939 spinlock_t *lock; 940 void __iomem *apbdiv; 941 void __iomem *timpre; 942 struct clk_hw hw; 943 }; 944 945 #define to_timer_cker(_hw) container_of(_hw, struct timer_cker, hw) 946 947 #define APB_DIV_MASK 0x07 948 #define TIM_PRE_MASK 0x01 949 950 static unsigned long __bestmult(struct clk_hw *hw, unsigned long rate, 951 unsigned long parent_rate) 952 { 953 struct timer_cker *tim_ker = to_timer_cker(hw); 954 u32 prescaler; 955 unsigned int mult = 0; 956 957 prescaler = readl_relaxed(tim_ker->apbdiv) & APB_DIV_MASK; 958 if (prescaler < 2) 959 return 1; 960 961 mult = 2; 962 963 if (rate / parent_rate >= 4) 964 mult = 4; 965 966 return mult; 967 } 968 969 static long timer_ker_round_rate(struct clk_hw *hw, unsigned long rate, 970 unsigned long *parent_rate) 971 { 972 unsigned long factor = __bestmult(hw, rate, *parent_rate); 973 974 return *parent_rate * factor; 975 } 976 977 static int timer_ker_set_rate(struct clk_hw *hw, unsigned long rate, 978 unsigned long parent_rate) 979 { 980 struct timer_cker *tim_ker = to_timer_cker(hw); 981 unsigned long flags = 0; 982 unsigned long factor = __bestmult(hw, rate, parent_rate); 983 int ret = 0; 984 985 spin_lock_irqsave(tim_ker->lock, flags); 986 987 switch (factor) { 988 case 1: 989 break; 990 case 2: 991 writel_relaxed(0, tim_ker->timpre); 992 break; 993 case 4: 994 writel_relaxed(1, tim_ker->timpre); 995 break; 996 default: 997 ret = -EINVAL; 998 } 999 spin_unlock_irqrestore(tim_ker->lock, flags); 1000 1001 return ret; 1002 } 1003 1004 static unsigned long timer_ker_recalc_rate(struct clk_hw *hw, 1005 unsigned long parent_rate) 1006 { 1007 struct timer_cker *tim_ker = to_timer_cker(hw); 1008 u32 prescaler, timpre; 1009 u32 mul; 1010 1011 prescaler = readl_relaxed(tim_ker->apbdiv) & APB_DIV_MASK; 1012 1013 timpre = readl_relaxed(tim_ker->timpre) & TIM_PRE_MASK; 1014 1015 if (!prescaler) 1016 return parent_rate; 1017 1018 mul = (timpre + 1) * 2; 1019 1020 return parent_rate * mul; 1021 } 1022 1023 static const struct clk_ops timer_ker_ops = { 1024 .recalc_rate = timer_ker_recalc_rate, 1025 .round_rate = timer_ker_round_rate, 1026 .set_rate = timer_ker_set_rate, 1027 1028 }; 1029 1030 static struct clk_hw *clk_register_cktim(struct device *dev, const char *name, 1031 const char *parent_name, 1032 unsigned long flags, 1033 void __iomem *apbdiv, 1034 void __iomem *timpre, 1035 spinlock_t *lock) 1036 { 1037 struct timer_cker *tim_ker; 1038 struct clk_init_data init; 1039 struct clk_hw *hw; 1040 int err; 1041 1042 tim_ker = devm_kzalloc(dev, sizeof(*tim_ker), GFP_KERNEL); 1043 if (!tim_ker) 1044 return ERR_PTR(-ENOMEM); 1045 1046 init.name = name; 1047 init.ops = &timer_ker_ops; 1048 init.flags = flags; 1049 init.parent_names = &parent_name; 1050 init.num_parents = 1; 1051 1052 tim_ker->hw.init = &init; 1053 tim_ker->lock = lock; 1054 tim_ker->apbdiv = apbdiv; 1055 tim_ker->timpre = timpre; 1056 1057 hw = &tim_ker->hw; 1058 err = clk_hw_register(dev, hw); 1059 1060 if (err) 1061 return ERR_PTR(err); 1062 1063 return hw; 1064 } 1065 1066 /* The divider of RTC clock concerns only ck_hse clock */ 1067 #define HSE_RTC 3 1068 1069 static unsigned long clk_divider_rtc_recalc_rate(struct clk_hw *hw, 1070 unsigned long parent_rate) 1071 { 1072 if (clk_hw_get_parent(hw) == clk_hw_get_parent_by_index(hw, HSE_RTC)) 1073 return clk_divider_ops.recalc_rate(hw, parent_rate); 1074 1075 return parent_rate; 1076 } 1077 1078 static int clk_divider_rtc_set_rate(struct clk_hw *hw, unsigned long rate, 1079 unsigned long parent_rate) 1080 { 1081 if (clk_hw_get_parent(hw) == clk_hw_get_parent_by_index(hw, HSE_RTC)) 1082 return clk_divider_ops.set_rate(hw, rate, parent_rate); 1083 1084 return parent_rate; 1085 } 1086 1087 static int clk_divider_rtc_determine_rate(struct clk_hw *hw, struct clk_rate_request *req) 1088 { 1089 if (req->best_parent_hw == clk_hw_get_parent_by_index(hw, HSE_RTC)) 1090 return clk_divider_ops.determine_rate(hw, req); 1091 1092 req->rate = req->best_parent_rate; 1093 1094 return 0; 1095 } 1096 1097 static const struct clk_ops rtc_div_clk_ops = { 1098 .recalc_rate = clk_divider_rtc_recalc_rate, 1099 .set_rate = clk_divider_rtc_set_rate, 1100 .determine_rate = clk_divider_rtc_determine_rate 1101 }; 1102 1103 struct stm32_pll_cfg { 1104 u32 offset; 1105 u32 muxoff; 1106 }; 1107 1108 static struct clk_hw *_clk_register_pll(struct device *dev, 1109 struct clk_hw_onecell_data *clk_data, 1110 void __iomem *base, spinlock_t *lock, 1111 const struct clock_config *cfg) 1112 { 1113 struct stm32_pll_cfg *stm_pll_cfg = cfg->cfg; 1114 1115 return clk_register_pll(dev, cfg->name, cfg->parent_names, 1116 cfg->num_parents, 1117 base + stm_pll_cfg->offset, 1118 base + stm_pll_cfg->muxoff, 1119 cfg->flags, lock); 1120 } 1121 1122 struct stm32_cktim_cfg { 1123 u32 offset_apbdiv; 1124 u32 offset_timpre; 1125 }; 1126 1127 static struct clk_hw *_clk_register_cktim(struct device *dev, 1128 struct clk_hw_onecell_data *clk_data, 1129 void __iomem *base, spinlock_t *lock, 1130 const struct clock_config *cfg) 1131 { 1132 struct stm32_cktim_cfg *cktim_cfg = cfg->cfg; 1133 1134 return clk_register_cktim(dev, cfg->name, cfg->parent_name, cfg->flags, 1135 cktim_cfg->offset_apbdiv + base, 1136 cktim_cfg->offset_timpre + base, lock); 1137 } 1138 1139 static struct clk_hw * 1140 _clk_stm32_register_gate(struct device *dev, 1141 struct clk_hw_onecell_data *clk_data, 1142 void __iomem *base, spinlock_t *lock, 1143 const struct clock_config *cfg) 1144 { 1145 return clk_stm32_register_gate_ops(dev, 1146 cfg->name, 1147 cfg->parent_name, 1148 cfg->parent_data, 1149 cfg->flags, 1150 base, 1151 cfg->cfg, 1152 lock); 1153 } 1154 1155 static struct clk_hw * 1156 _clk_stm32_register_composite(struct device *dev, 1157 struct clk_hw_onecell_data *clk_data, 1158 void __iomem *base, spinlock_t *lock, 1159 const struct clock_config *cfg) 1160 { 1161 return clk_stm32_register_composite(dev, cfg->name, cfg->parent_names, 1162 cfg->parent_data, cfg->num_parents, 1163 base, cfg->cfg, cfg->flags, lock); 1164 } 1165 1166 #define GATE(_id, _name, _parent, _flags, _offset, _bit_idx, _gate_flags)\ 1167 {\ 1168 .id = _id,\ 1169 .name = _name,\ 1170 .parent_name = _parent,\ 1171 .flags = _flags,\ 1172 .cfg = &(struct gate_cfg) {\ 1173 .reg_off = _offset,\ 1174 .bit_idx = _bit_idx,\ 1175 .gate_flags = _gate_flags,\ 1176 },\ 1177 .func = _clk_hw_register_gate,\ 1178 } 1179 1180 #define FIXED_FACTOR(_id, _name, _parent, _flags, _mult, _div)\ 1181 {\ 1182 .id = _id,\ 1183 .name = _name,\ 1184 .parent_name = _parent,\ 1185 .flags = _flags,\ 1186 .cfg = &(struct fixed_factor_cfg) {\ 1187 .mult = _mult,\ 1188 .div = _div,\ 1189 },\ 1190 .func = _clk_hw_register_fixed_factor,\ 1191 } 1192 1193 #define DIV_TABLE(_id, _name, _parent, _flags, _offset, _shift, _width,\ 1194 _div_flags, _div_table)\ 1195 {\ 1196 .id = _id,\ 1197 .name = _name,\ 1198 .parent_name = _parent,\ 1199 .flags = _flags,\ 1200 .cfg = &(struct div_cfg) {\ 1201 .reg_off = _offset,\ 1202 .shift = _shift,\ 1203 .width = _width,\ 1204 .div_flags = _div_flags,\ 1205 .table = _div_table,\ 1206 },\ 1207 .func = _clk_hw_register_divider_table,\ 1208 } 1209 1210 #define DIV(_id, _name, _parent, _flags, _offset, _shift, _width, _div_flags)\ 1211 DIV_TABLE(_id, _name, _parent, _flags, _offset, _shift, _width,\ 1212 _div_flags, NULL) 1213 1214 #define MUX(_id, _name, _parents, _flags, _offset, _shift, _width, _mux_flags)\ 1215 {\ 1216 .id = _id,\ 1217 .name = _name,\ 1218 .parent_names = _parents,\ 1219 .num_parents = ARRAY_SIZE(_parents),\ 1220 .flags = _flags,\ 1221 .cfg = &(struct mux_cfg) {\ 1222 .reg_off = _offset,\ 1223 .shift = _shift,\ 1224 .width = _width,\ 1225 .mux_flags = _mux_flags,\ 1226 },\ 1227 .func = _clk_hw_register_mux,\ 1228 } 1229 1230 #define PLL(_id, _name, _parents, _flags, _offset_p, _offset_mux)\ 1231 {\ 1232 .id = _id,\ 1233 .name = _name,\ 1234 .parent_names = _parents,\ 1235 .num_parents = ARRAY_SIZE(_parents),\ 1236 .flags = CLK_IGNORE_UNUSED | (_flags),\ 1237 .cfg = &(struct stm32_pll_cfg) {\ 1238 .offset = _offset_p,\ 1239 .muxoff = _offset_mux,\ 1240 },\ 1241 .func = _clk_register_pll,\ 1242 } 1243 1244 #define STM32_CKTIM(_name, _parent, _flags, _offset_apbdiv, _offset_timpre)\ 1245 {\ 1246 .id = NO_ID,\ 1247 .name = _name,\ 1248 .parent_name = _parent,\ 1249 .flags = _flags,\ 1250 .cfg = &(struct stm32_cktim_cfg) {\ 1251 .offset_apbdiv = _offset_apbdiv,\ 1252 .offset_timpre = _offset_timpre,\ 1253 },\ 1254 .func = _clk_register_cktim,\ 1255 } 1256 1257 #define STM32_TIM(_id, _name, _parent, _offset_set, _bit_idx)\ 1258 GATE_MP1(_id, _name, _parent, CLK_SET_RATE_PARENT,\ 1259 _offset_set, _bit_idx, 0) 1260 1261 /* STM32 GATE */ 1262 #define STM32_GATE(_id, _name, _parent, _flags, _gate)\ 1263 {\ 1264 .id = _id,\ 1265 .name = _name,\ 1266 .parent_name = _parent,\ 1267 .flags = _flags,\ 1268 .cfg = (struct stm32_gate_cfg *) {_gate},\ 1269 .func = _clk_stm32_register_gate,\ 1270 } 1271 1272 #define STM32_GATE_PDATA(_id, _name, _parent, _flags, _gate)\ 1273 {\ 1274 .id = _id,\ 1275 .name = _name,\ 1276 .parent_data = _parent,\ 1277 .flags = _flags,\ 1278 .cfg = (struct stm32_gate_cfg *) {_gate},\ 1279 .func = _clk_stm32_register_gate,\ 1280 } 1281 1282 #define _STM32_GATE(_gate_offset, _gate_bit_idx, _gate_flags, _mgate, _ops)\ 1283 (&(struct stm32_gate_cfg) {\ 1284 &(struct gate_cfg) {\ 1285 .reg_off = _gate_offset,\ 1286 .bit_idx = _gate_bit_idx,\ 1287 .gate_flags = _gate_flags,\ 1288 },\ 1289 .mgate = _mgate,\ 1290 .ops = _ops,\ 1291 }) 1292 1293 #define _STM32_MGATE(_mgate)\ 1294 (&per_gate_cfg[_mgate]) 1295 1296 #define _GATE(_gate_offset, _gate_bit_idx, _gate_flags)\ 1297 _STM32_GATE(_gate_offset, _gate_bit_idx, _gate_flags,\ 1298 NULL, NULL)\ 1299 1300 #define _GATE_MP1(_gate_offset, _gate_bit_idx, _gate_flags)\ 1301 _STM32_GATE(_gate_offset, _gate_bit_idx, _gate_flags,\ 1302 NULL, &mp1_gate_clk_ops)\ 1303 1304 #define _MGATE_MP1(_mgate)\ 1305 .gate = &per_gate_cfg[_mgate] 1306 1307 #define GATE_MP1(_id, _name, _parent, _flags, _offset, _bit_idx, _gate_flags)\ 1308 STM32_GATE(_id, _name, _parent, _flags,\ 1309 _GATE_MP1(_offset, _bit_idx, _gate_flags)) 1310 1311 #define MGATE_MP1(_id, _name, _parent, _flags, _mgate)\ 1312 STM32_GATE(_id, _name, _parent, _flags,\ 1313 _STM32_MGATE(_mgate)) 1314 1315 #define MGATE_MP1_PDATA(_id, _name, _parent, _flags, _mgate)\ 1316 STM32_GATE_PDATA(_id, _name, _parent, _flags,\ 1317 _STM32_MGATE(_mgate)) 1318 1319 #define _STM32_DIV(_div_offset, _div_shift, _div_width,\ 1320 _div_flags, _div_table, _ops)\ 1321 .div = &(struct stm32_div_cfg) {\ 1322 &(struct div_cfg) {\ 1323 .reg_off = _div_offset,\ 1324 .shift = _div_shift,\ 1325 .width = _div_width,\ 1326 .div_flags = _div_flags,\ 1327 .table = _div_table,\ 1328 },\ 1329 .ops = _ops,\ 1330 } 1331 1332 #define _DIV(_div_offset, _div_shift, _div_width, _div_flags, _div_table)\ 1333 _STM32_DIV(_div_offset, _div_shift, _div_width,\ 1334 _div_flags, _div_table, NULL)\ 1335 1336 #define _DIV_RTC(_div_offset, _div_shift, _div_width, _div_flags, _div_table)\ 1337 _STM32_DIV(_div_offset, _div_shift, _div_width,\ 1338 _div_flags, _div_table, &rtc_div_clk_ops) 1339 1340 #define _STM32_MUX(_offset, _shift, _width, _mux_flags, _mmux, _ops)\ 1341 .mux = &(struct stm32_mux_cfg) {\ 1342 &(struct mux_cfg) {\ 1343 .reg_off = _offset,\ 1344 .shift = _shift,\ 1345 .width = _width,\ 1346 .mux_flags = _mux_flags,\ 1347 .table = NULL,\ 1348 },\ 1349 .mmux = _mmux,\ 1350 .ops = _ops,\ 1351 } 1352 1353 #define _MUX(_offset, _shift, _width, _mux_flags)\ 1354 _STM32_MUX(_offset, _shift, _width, _mux_flags, NULL, NULL)\ 1355 1356 #define _MMUX(_mmux) .mux = &ker_mux_cfg[_mmux] 1357 1358 #define PARENT(_parent) ((const char *[]) { _parent}) 1359 1360 #define _NO_MUX .mux = NULL 1361 #define _NO_DIV .div = NULL 1362 #define _NO_GATE .gate = NULL 1363 1364 #define COMPOSITE(_id, _name, _parents, _flags, _gate, _mux, _div)\ 1365 {\ 1366 .id = _id,\ 1367 .name = _name,\ 1368 .parent_names = _parents,\ 1369 .num_parents = ARRAY_SIZE(_parents),\ 1370 .flags = _flags,\ 1371 .cfg = &(struct stm32_composite_cfg) {\ 1372 _gate,\ 1373 _mux,\ 1374 _div,\ 1375 },\ 1376 .func = _clk_stm32_register_composite,\ 1377 } 1378 1379 #define PCLK(_id, _name, _parent, _flags, _mgate)\ 1380 MGATE_MP1(_id, _name, _parent, _flags, _mgate) 1381 1382 #define PCLK_PDATA(_id, _name, _parent, _flags, _mgate)\ 1383 MGATE_MP1_PDATA(_id, _name, _parent, _flags, _mgate) 1384 1385 #define KCLK(_id, _name, _parents, _flags, _mgate, _mmux)\ 1386 COMPOSITE(_id, _name, _parents, CLK_OPS_PARENT_ENABLE |\ 1387 CLK_SET_RATE_NO_REPARENT | _flags,\ 1388 _MGATE_MP1(_mgate),\ 1389 _MMUX(_mmux),\ 1390 _NO_DIV) 1391 1392 enum { 1393 G_SAI1, 1394 G_SAI2, 1395 G_SAI3, 1396 G_SAI4, 1397 G_SPI1, 1398 G_SPI2, 1399 G_SPI3, 1400 G_SPI4, 1401 G_SPI5, 1402 G_SPI6, 1403 G_SPDIF, 1404 G_I2C1, 1405 G_I2C2, 1406 G_I2C3, 1407 G_I2C4, 1408 G_I2C5, 1409 G_I2C6, 1410 G_USART2, 1411 G_UART4, 1412 G_USART3, 1413 G_UART5, 1414 G_USART1, 1415 G_USART6, 1416 G_UART7, 1417 G_UART8, 1418 G_LPTIM1, 1419 G_LPTIM2, 1420 G_LPTIM3, 1421 G_LPTIM4, 1422 G_LPTIM5, 1423 G_LTDC, 1424 G_DSI, 1425 G_QSPI, 1426 G_FMC, 1427 G_SDMMC1, 1428 G_SDMMC2, 1429 G_SDMMC3, 1430 G_USBO, 1431 G_USBPHY, 1432 G_RNG1, 1433 G_RNG2, 1434 G_FDCAN, 1435 G_DAC12, 1436 G_CEC, 1437 G_ADC12, 1438 G_GPU, 1439 G_STGEN, 1440 G_DFSDM, 1441 G_ADFSDM, 1442 G_TIM2, 1443 G_TIM3, 1444 G_TIM4, 1445 G_TIM5, 1446 G_TIM6, 1447 G_TIM7, 1448 G_TIM12, 1449 G_TIM13, 1450 G_TIM14, 1451 G_MDIO, 1452 G_TIM1, 1453 G_TIM8, 1454 G_TIM15, 1455 G_TIM16, 1456 G_TIM17, 1457 G_SYSCFG, 1458 G_VREF, 1459 G_TMPSENS, 1460 G_PMBCTRL, 1461 G_HDP, 1462 G_IWDG2, 1463 G_STGENRO, 1464 G_DMA1, 1465 G_DMA2, 1466 G_DMAMUX, 1467 G_DCMI, 1468 G_CRYP2, 1469 G_HASH2, 1470 G_CRC2, 1471 G_HSEM, 1472 G_IPCC, 1473 G_GPIOA, 1474 G_GPIOB, 1475 G_GPIOC, 1476 G_GPIOD, 1477 G_GPIOE, 1478 G_GPIOF, 1479 G_GPIOG, 1480 G_GPIOH, 1481 G_GPIOI, 1482 G_GPIOJ, 1483 G_GPIOK, 1484 G_MDMA, 1485 G_ETHCK, 1486 G_ETHTX, 1487 G_ETHRX, 1488 G_ETHMAC, 1489 G_CRC1, 1490 G_USBH, 1491 G_ETHSTP, 1492 G_RTCAPB, 1493 G_TZC1, 1494 G_TZC2, 1495 G_TZPC, 1496 G_IWDG1, 1497 G_BSEC, 1498 G_GPIOZ, 1499 G_CRYP1, 1500 G_HASH1, 1501 G_BKPSRAM, 1502 G_DDRPERFM, 1503 1504 G_LAST 1505 }; 1506 1507 static struct stm32_mgate mp1_mgate[G_LAST]; 1508 1509 #define _K_GATE(_id, _gate_offset, _gate_bit_idx, _gate_flags,\ 1510 _mgate, _ops)\ 1511 [_id] = {\ 1512 &(struct gate_cfg) {\ 1513 .reg_off = _gate_offset,\ 1514 .bit_idx = _gate_bit_idx,\ 1515 .gate_flags = _gate_flags,\ 1516 },\ 1517 .mgate = _mgate,\ 1518 .ops = _ops,\ 1519 } 1520 1521 #define K_GATE(_id, _gate_offset, _gate_bit_idx, _gate_flags)\ 1522 _K_GATE(_id, _gate_offset, _gate_bit_idx, _gate_flags,\ 1523 NULL, &mp1_gate_clk_ops) 1524 1525 #define K_MGATE(_id, _gate_offset, _gate_bit_idx, _gate_flags)\ 1526 _K_GATE(_id, _gate_offset, _gate_bit_idx, _gate_flags,\ 1527 &mp1_mgate[_id], &mp1_mgate_clk_ops) 1528 1529 /* Peripheral gates */ 1530 static struct stm32_gate_cfg per_gate_cfg[G_LAST] = { 1531 /* Multi gates */ 1532 K_GATE(G_MDIO, RCC_APB1ENSETR, 31, 0), 1533 K_MGATE(G_DAC12, RCC_APB1ENSETR, 29, 0), 1534 K_MGATE(G_CEC, RCC_APB1ENSETR, 27, 0), 1535 K_MGATE(G_SPDIF, RCC_APB1ENSETR, 26, 0), 1536 K_MGATE(G_I2C5, RCC_APB1ENSETR, 24, 0), 1537 K_MGATE(G_I2C3, RCC_APB1ENSETR, 23, 0), 1538 K_MGATE(G_I2C2, RCC_APB1ENSETR, 22, 0), 1539 K_MGATE(G_I2C1, RCC_APB1ENSETR, 21, 0), 1540 K_MGATE(G_UART8, RCC_APB1ENSETR, 19, 0), 1541 K_MGATE(G_UART7, RCC_APB1ENSETR, 18, 0), 1542 K_MGATE(G_UART5, RCC_APB1ENSETR, 17, 0), 1543 K_MGATE(G_UART4, RCC_APB1ENSETR, 16, 0), 1544 K_MGATE(G_USART3, RCC_APB1ENSETR, 15, 0), 1545 K_MGATE(G_USART2, RCC_APB1ENSETR, 14, 0), 1546 K_MGATE(G_SPI3, RCC_APB1ENSETR, 12, 0), 1547 K_MGATE(G_SPI2, RCC_APB1ENSETR, 11, 0), 1548 K_MGATE(G_LPTIM1, RCC_APB1ENSETR, 9, 0), 1549 K_GATE(G_TIM14, RCC_APB1ENSETR, 8, 0), 1550 K_GATE(G_TIM13, RCC_APB1ENSETR, 7, 0), 1551 K_GATE(G_TIM12, RCC_APB1ENSETR, 6, 0), 1552 K_GATE(G_TIM7, RCC_APB1ENSETR, 5, 0), 1553 K_GATE(G_TIM6, RCC_APB1ENSETR, 4, 0), 1554 K_GATE(G_TIM5, RCC_APB1ENSETR, 3, 0), 1555 K_GATE(G_TIM4, RCC_APB1ENSETR, 2, 0), 1556 K_GATE(G_TIM3, RCC_APB1ENSETR, 1, 0), 1557 K_GATE(G_TIM2, RCC_APB1ENSETR, 0, 0), 1558 1559 K_MGATE(G_FDCAN, RCC_APB2ENSETR, 24, 0), 1560 K_GATE(G_ADFSDM, RCC_APB2ENSETR, 21, 0), 1561 K_GATE(G_DFSDM, RCC_APB2ENSETR, 20, 0), 1562 K_MGATE(G_SAI3, RCC_APB2ENSETR, 18, 0), 1563 K_MGATE(G_SAI2, RCC_APB2ENSETR, 17, 0), 1564 K_MGATE(G_SAI1, RCC_APB2ENSETR, 16, 0), 1565 K_MGATE(G_USART6, RCC_APB2ENSETR, 13, 0), 1566 K_MGATE(G_SPI5, RCC_APB2ENSETR, 10, 0), 1567 K_MGATE(G_SPI4, RCC_APB2ENSETR, 9, 0), 1568 K_MGATE(G_SPI1, RCC_APB2ENSETR, 8, 0), 1569 K_GATE(G_TIM17, RCC_APB2ENSETR, 4, 0), 1570 K_GATE(G_TIM16, RCC_APB2ENSETR, 3, 0), 1571 K_GATE(G_TIM15, RCC_APB2ENSETR, 2, 0), 1572 K_GATE(G_TIM8, RCC_APB2ENSETR, 1, 0), 1573 K_GATE(G_TIM1, RCC_APB2ENSETR, 0, 0), 1574 1575 K_GATE(G_HDP, RCC_APB3ENSETR, 20, 0), 1576 K_GATE(G_PMBCTRL, RCC_APB3ENSETR, 17, 0), 1577 K_GATE(G_TMPSENS, RCC_APB3ENSETR, 16, 0), 1578 K_GATE(G_VREF, RCC_APB3ENSETR, 13, 0), 1579 K_GATE(G_SYSCFG, RCC_APB3ENSETR, 11, 0), 1580 K_MGATE(G_SAI4, RCC_APB3ENSETR, 8, 0), 1581 K_MGATE(G_LPTIM5, RCC_APB3ENSETR, 3, 0), 1582 K_MGATE(G_LPTIM4, RCC_APB3ENSETR, 2, 0), 1583 K_MGATE(G_LPTIM3, RCC_APB3ENSETR, 1, 0), 1584 K_MGATE(G_LPTIM2, RCC_APB3ENSETR, 0, 0), 1585 1586 K_GATE(G_STGENRO, RCC_APB4ENSETR, 20, 0), 1587 K_MGATE(G_USBPHY, RCC_APB4ENSETR, 16, 0), 1588 K_GATE(G_IWDG2, RCC_APB4ENSETR, 15, 0), 1589 K_GATE(G_DDRPERFM, RCC_APB4ENSETR, 8, 0), 1590 K_MGATE(G_DSI, RCC_APB4ENSETR, 4, 0), 1591 K_MGATE(G_LTDC, RCC_APB4ENSETR, 0, 0), 1592 1593 K_GATE(G_STGEN, RCC_APB5ENSETR, 20, 0), 1594 K_GATE(G_BSEC, RCC_APB5ENSETR, 16, 0), 1595 K_GATE(G_IWDG1, RCC_APB5ENSETR, 15, 0), 1596 K_GATE(G_TZPC, RCC_APB5ENSETR, 13, 0), 1597 K_GATE(G_TZC2, RCC_APB5ENSETR, 12, 0), 1598 K_GATE(G_TZC1, RCC_APB5ENSETR, 11, 0), 1599 K_GATE(G_RTCAPB, RCC_APB5ENSETR, 8, 0), 1600 K_MGATE(G_USART1, RCC_APB5ENSETR, 4, 0), 1601 K_MGATE(G_I2C6, RCC_APB5ENSETR, 3, 0), 1602 K_MGATE(G_I2C4, RCC_APB5ENSETR, 2, 0), 1603 K_MGATE(G_SPI6, RCC_APB5ENSETR, 0, 0), 1604 1605 K_MGATE(G_SDMMC3, RCC_AHB2ENSETR, 16, 0), 1606 K_MGATE(G_USBO, RCC_AHB2ENSETR, 8, 0), 1607 K_MGATE(G_ADC12, RCC_AHB2ENSETR, 5, 0), 1608 K_GATE(G_DMAMUX, RCC_AHB2ENSETR, 2, 0), 1609 K_GATE(G_DMA2, RCC_AHB2ENSETR, 1, 0), 1610 K_GATE(G_DMA1, RCC_AHB2ENSETR, 0, 0), 1611 1612 K_GATE(G_IPCC, RCC_AHB3ENSETR, 12, 0), 1613 K_GATE(G_HSEM, RCC_AHB3ENSETR, 11, 0), 1614 K_GATE(G_CRC2, RCC_AHB3ENSETR, 7, 0), 1615 K_MGATE(G_RNG2, RCC_AHB3ENSETR, 6, 0), 1616 K_GATE(G_HASH2, RCC_AHB3ENSETR, 5, 0), 1617 K_GATE(G_CRYP2, RCC_AHB3ENSETR, 4, 0), 1618 K_GATE(G_DCMI, RCC_AHB3ENSETR, 0, 0), 1619 1620 K_GATE(G_GPIOK, RCC_AHB4ENSETR, 10, 0), 1621 K_GATE(G_GPIOJ, RCC_AHB4ENSETR, 9, 0), 1622 K_GATE(G_GPIOI, RCC_AHB4ENSETR, 8, 0), 1623 K_GATE(G_GPIOH, RCC_AHB4ENSETR, 7, 0), 1624 K_GATE(G_GPIOG, RCC_AHB4ENSETR, 6, 0), 1625 K_GATE(G_GPIOF, RCC_AHB4ENSETR, 5, 0), 1626 K_GATE(G_GPIOE, RCC_AHB4ENSETR, 4, 0), 1627 K_GATE(G_GPIOD, RCC_AHB4ENSETR, 3, 0), 1628 K_GATE(G_GPIOC, RCC_AHB4ENSETR, 2, 0), 1629 K_GATE(G_GPIOB, RCC_AHB4ENSETR, 1, 0), 1630 K_GATE(G_GPIOA, RCC_AHB4ENSETR, 0, 0), 1631 1632 K_GATE(G_BKPSRAM, RCC_AHB5ENSETR, 8, 0), 1633 K_MGATE(G_RNG1, RCC_AHB5ENSETR, 6, 0), 1634 K_GATE(G_HASH1, RCC_AHB5ENSETR, 5, 0), 1635 K_GATE(G_CRYP1, RCC_AHB5ENSETR, 4, 0), 1636 K_GATE(G_GPIOZ, RCC_AHB5ENSETR, 0, 0), 1637 1638 K_GATE(G_USBH, RCC_AHB6ENSETR, 24, 0), 1639 K_GATE(G_CRC1, RCC_AHB6ENSETR, 20, 0), 1640 K_MGATE(G_SDMMC2, RCC_AHB6ENSETR, 17, 0), 1641 K_MGATE(G_SDMMC1, RCC_AHB6ENSETR, 16, 0), 1642 K_MGATE(G_QSPI, RCC_AHB6ENSETR, 14, 0), 1643 K_MGATE(G_FMC, RCC_AHB6ENSETR, 12, 0), 1644 K_GATE(G_ETHMAC, RCC_AHB6ENSETR, 10, 0), 1645 K_GATE(G_ETHRX, RCC_AHB6ENSETR, 9, 0), 1646 K_GATE(G_ETHTX, RCC_AHB6ENSETR, 8, 0), 1647 K_GATE(G_ETHCK, RCC_AHB6ENSETR, 7, 0), 1648 K_MGATE(G_GPU, RCC_AHB6ENSETR, 5, 0), 1649 K_GATE(G_MDMA, RCC_AHB6ENSETR, 0, 0), 1650 K_GATE(G_ETHSTP, RCC_AHB6LPENSETR, 11, 0), 1651 }; 1652 1653 enum { 1654 M_SDMMC12, 1655 M_SDMMC3, 1656 M_FMC, 1657 M_QSPI, 1658 M_RNG1, 1659 M_RNG2, 1660 M_USBPHY, 1661 M_USBO, 1662 M_STGEN, 1663 M_SPDIF, 1664 M_SPI1, 1665 M_SPI23, 1666 M_SPI45, 1667 M_SPI6, 1668 M_CEC, 1669 M_I2C12, 1670 M_I2C35, 1671 M_I2C46, 1672 M_LPTIM1, 1673 M_LPTIM23, 1674 M_LPTIM45, 1675 M_USART1, 1676 M_UART24, 1677 M_UART35, 1678 M_USART6, 1679 M_UART78, 1680 M_SAI1, 1681 M_SAI2, 1682 M_SAI3, 1683 M_SAI4, 1684 M_DSI, 1685 M_FDCAN, 1686 M_ADC12, 1687 M_ETHCK, 1688 M_CKPER, 1689 M_LAST 1690 }; 1691 1692 static struct stm32_mmux ker_mux[M_LAST]; 1693 1694 #define _K_MUX(_id, _offset, _shift, _width, _mux_flags, _mmux, _ops)\ 1695 [_id] = {\ 1696 &(struct mux_cfg) {\ 1697 .reg_off = _offset,\ 1698 .shift = _shift,\ 1699 .width = _width,\ 1700 .mux_flags = _mux_flags,\ 1701 .table = NULL,\ 1702 },\ 1703 .mmux = _mmux,\ 1704 .ops = _ops,\ 1705 } 1706 1707 #define K_MUX(_id, _offset, _shift, _width, _mux_flags)\ 1708 _K_MUX(_id, _offset, _shift, _width, _mux_flags,\ 1709 NULL, NULL) 1710 1711 #define K_MMUX(_id, _offset, _shift, _width, _mux_flags)\ 1712 _K_MUX(_id, _offset, _shift, _width, _mux_flags,\ 1713 &ker_mux[_id], &clk_mmux_ops) 1714 1715 static const struct stm32_mux_cfg ker_mux_cfg[M_LAST] = { 1716 /* Kernel multi mux */ 1717 K_MMUX(M_SDMMC12, RCC_SDMMC12CKSELR, 0, 3, 0), 1718 K_MMUX(M_SPI23, RCC_SPI2S23CKSELR, 0, 3, 0), 1719 K_MMUX(M_SPI45, RCC_SPI2S45CKSELR, 0, 3, 0), 1720 K_MMUX(M_I2C12, RCC_I2C12CKSELR, 0, 3, 0), 1721 K_MMUX(M_I2C35, RCC_I2C35CKSELR, 0, 3, 0), 1722 K_MMUX(M_LPTIM23, RCC_LPTIM23CKSELR, 0, 3, 0), 1723 K_MMUX(M_LPTIM45, RCC_LPTIM45CKSELR, 0, 3, 0), 1724 K_MMUX(M_UART24, RCC_UART24CKSELR, 0, 3, 0), 1725 K_MMUX(M_UART35, RCC_UART35CKSELR, 0, 3, 0), 1726 K_MMUX(M_UART78, RCC_UART78CKSELR, 0, 3, 0), 1727 K_MMUX(M_SAI1, RCC_SAI1CKSELR, 0, 3, 0), 1728 K_MMUX(M_ETHCK, RCC_ETHCKSELR, 0, 2, 0), 1729 K_MMUX(M_I2C46, RCC_I2C46CKSELR, 0, 3, 0), 1730 1731 /* Kernel simple mux */ 1732 K_MUX(M_RNG2, RCC_RNG2CKSELR, 0, 2, 0), 1733 K_MUX(M_SDMMC3, RCC_SDMMC3CKSELR, 0, 3, 0), 1734 K_MUX(M_FMC, RCC_FMCCKSELR, 0, 2, 0), 1735 K_MUX(M_QSPI, RCC_QSPICKSELR, 0, 2, 0), 1736 K_MUX(M_USBPHY, RCC_USBCKSELR, 0, 2, 0), 1737 K_MUX(M_USBO, RCC_USBCKSELR, 4, 1, 0), 1738 K_MUX(M_SPDIF, RCC_SPDIFCKSELR, 0, 2, 0), 1739 K_MUX(M_SPI1, RCC_SPI2S1CKSELR, 0, 3, 0), 1740 K_MUX(M_CEC, RCC_CECCKSELR, 0, 2, 0), 1741 K_MUX(M_LPTIM1, RCC_LPTIM1CKSELR, 0, 3, 0), 1742 K_MUX(M_USART6, RCC_UART6CKSELR, 0, 3, 0), 1743 K_MUX(M_FDCAN, RCC_FDCANCKSELR, 0, 2, 0), 1744 K_MUX(M_SAI2, RCC_SAI2CKSELR, 0, 3, 0), 1745 K_MUX(M_SAI3, RCC_SAI3CKSELR, 0, 3, 0), 1746 K_MUX(M_SAI4, RCC_SAI4CKSELR, 0, 3, 0), 1747 K_MUX(M_ADC12, RCC_ADCCKSELR, 0, 2, 0), 1748 K_MUX(M_DSI, RCC_DSICKSELR, 0, 1, 0), 1749 K_MUX(M_CKPER, RCC_CPERCKSELR, 0, 2, 0), 1750 K_MUX(M_RNG1, RCC_RNG1CKSELR, 0, 2, 0), 1751 K_MUX(M_STGEN, RCC_STGENCKSELR, 0, 2, 0), 1752 K_MUX(M_USART1, RCC_UART1CKSELR, 0, 3, 0), 1753 K_MUX(M_SPI6, RCC_SPI6CKSELR, 0, 3, 0), 1754 }; 1755 1756 static const struct clock_config stm32mp1_clock_cfg[] = { 1757 /* External / Internal Oscillators */ 1758 GATE_MP1(CK_HSE, "ck_hse", "clk-hse", 0, RCC_OCENSETR, 8, 0), 1759 /* ck_csi is used by IO compensation and should be critical */ 1760 GATE_MP1(CK_CSI, "ck_csi", "clk-csi", CLK_IS_CRITICAL, 1761 RCC_OCENSETR, 4, 0), 1762 COMPOSITE(CK_HSI, "ck_hsi", PARENT("clk-hsi"), 0, 1763 _GATE_MP1(RCC_OCENSETR, 0, 0), 1764 _NO_MUX, 1765 _DIV(RCC_HSICFGR, 0, 2, CLK_DIVIDER_POWER_OF_TWO | 1766 CLK_DIVIDER_READ_ONLY, NULL)), 1767 GATE(CK_LSI, "ck_lsi", "clk-lsi", 0, RCC_RDLSICR, 0, 0), 1768 GATE(CK_LSE, "ck_lse", "clk-lse", 0, RCC_BDCR, 0, 0), 1769 1770 FIXED_FACTOR(CK_HSE_DIV2, "clk-hse-div2", "ck_hse", 0, 1, 2), 1771 1772 /* PLLs */ 1773 PLL(PLL1, "pll1", ref12_parents, 0, RCC_PLL1CR, RCC_RCK12SELR), 1774 PLL(PLL2, "pll2", ref12_parents, 0, RCC_PLL2CR, RCC_RCK12SELR), 1775 PLL(PLL3, "pll3", ref3_parents, 0, RCC_PLL3CR, RCC_RCK3SELR), 1776 PLL(PLL4, "pll4", ref4_parents, 0, RCC_PLL4CR, RCC_RCK4SELR), 1777 1778 /* ODF */ 1779 COMPOSITE(PLL1_P, "pll1_p", PARENT("pll1"), 0, 1780 _GATE(RCC_PLL1CR, 4, 0), 1781 _NO_MUX, 1782 _DIV(RCC_PLL1CFGR2, 0, 7, 0, NULL)), 1783 1784 COMPOSITE(PLL2_P, "pll2_p", PARENT("pll2"), 0, 1785 _GATE(RCC_PLL2CR, 4, 0), 1786 _NO_MUX, 1787 _DIV(RCC_PLL2CFGR2, 0, 7, 0, NULL)), 1788 1789 COMPOSITE(PLL2_Q, "pll2_q", PARENT("pll2"), 0, 1790 _GATE(RCC_PLL2CR, 5, 0), 1791 _NO_MUX, 1792 _DIV(RCC_PLL2CFGR2, 8, 7, 0, NULL)), 1793 1794 COMPOSITE(PLL2_R, "pll2_r", PARENT("pll2"), CLK_IS_CRITICAL, 1795 _GATE(RCC_PLL2CR, 6, 0), 1796 _NO_MUX, 1797 _DIV(RCC_PLL2CFGR2, 16, 7, 0, NULL)), 1798 1799 COMPOSITE(PLL3_P, "pll3_p", PARENT("pll3"), 0, 1800 _GATE(RCC_PLL3CR, 4, 0), 1801 _NO_MUX, 1802 _DIV(RCC_PLL3CFGR2, 0, 7, 0, NULL)), 1803 1804 COMPOSITE(PLL3_Q, "pll3_q", PARENT("pll3"), 0, 1805 _GATE(RCC_PLL3CR, 5, 0), 1806 _NO_MUX, 1807 _DIV(RCC_PLL3CFGR2, 8, 7, 0, NULL)), 1808 1809 COMPOSITE(PLL3_R, "pll3_r", PARENT("pll3"), 0, 1810 _GATE(RCC_PLL3CR, 6, 0), 1811 _NO_MUX, 1812 _DIV(RCC_PLL3CFGR2, 16, 7, 0, NULL)), 1813 1814 COMPOSITE(PLL4_P, "pll4_p", PARENT("pll4"), 0, 1815 _GATE(RCC_PLL4CR, 4, 0), 1816 _NO_MUX, 1817 _DIV(RCC_PLL4CFGR2, 0, 7, 0, NULL)), 1818 1819 COMPOSITE(PLL4_Q, "pll4_q", PARENT("pll4"), 0, 1820 _GATE(RCC_PLL4CR, 5, 0), 1821 _NO_MUX, 1822 _DIV(RCC_PLL4CFGR2, 8, 7, 0, NULL)), 1823 1824 COMPOSITE(PLL4_R, "pll4_r", PARENT("pll4"), 0, 1825 _GATE(RCC_PLL4CR, 6, 0), 1826 _NO_MUX, 1827 _DIV(RCC_PLL4CFGR2, 16, 7, 0, NULL)), 1828 1829 /* MUX system clocks */ 1830 MUX(CK_PER, "ck_per", per_src, CLK_OPS_PARENT_ENABLE, 1831 RCC_CPERCKSELR, 0, 2, 0), 1832 1833 MUX(CK_MPU, "ck_mpu", cpu_src, CLK_OPS_PARENT_ENABLE | 1834 CLK_IS_CRITICAL, RCC_MPCKSELR, 0, 2, 0), 1835 1836 COMPOSITE(CK_AXI, "ck_axi", axi_src, CLK_IS_CRITICAL | 1837 CLK_OPS_PARENT_ENABLE, 1838 _NO_GATE, 1839 _MUX(RCC_ASSCKSELR, 0, 2, 0), 1840 _DIV(RCC_AXIDIVR, 0, 3, 0, axi_div_table)), 1841 1842 COMPOSITE(CK_MCU, "ck_mcu", mcu_src, CLK_IS_CRITICAL | 1843 CLK_OPS_PARENT_ENABLE, 1844 _NO_GATE, 1845 _MUX(RCC_MSSCKSELR, 0, 2, 0), 1846 _DIV(RCC_MCUDIVR, 0, 4, 0, mcu_div_table)), 1847 1848 DIV_TABLE(NO_ID, "pclk1", "ck_mcu", CLK_IGNORE_UNUSED, RCC_APB1DIVR, 0, 1849 3, CLK_DIVIDER_READ_ONLY, apb_div_table), 1850 1851 DIV_TABLE(NO_ID, "pclk2", "ck_mcu", CLK_IGNORE_UNUSED, RCC_APB2DIVR, 0, 1852 3, CLK_DIVIDER_READ_ONLY, apb_div_table), 1853 1854 DIV_TABLE(NO_ID, "pclk3", "ck_mcu", CLK_IGNORE_UNUSED, RCC_APB3DIVR, 0, 1855 3, CLK_DIVIDER_READ_ONLY, apb_div_table), 1856 1857 DIV_TABLE(NO_ID, "pclk4", "ck_axi", CLK_IGNORE_UNUSED, RCC_APB4DIVR, 0, 1858 3, CLK_DIVIDER_READ_ONLY, apb_div_table), 1859 1860 DIV_TABLE(NO_ID, "pclk5", "ck_axi", CLK_IGNORE_UNUSED, RCC_APB5DIVR, 0, 1861 3, CLK_DIVIDER_READ_ONLY, apb_div_table), 1862 1863 /* Kernel Timers */ 1864 STM32_CKTIM("ck1_tim", "pclk1", 0, RCC_APB1DIVR, RCC_TIMG1PRER), 1865 STM32_CKTIM("ck2_tim", "pclk2", 0, RCC_APB2DIVR, RCC_TIMG2PRER), 1866 1867 STM32_TIM(TIM2_K, "tim2_k", "ck1_tim", RCC_APB1ENSETR, 0), 1868 STM32_TIM(TIM3_K, "tim3_k", "ck1_tim", RCC_APB1ENSETR, 1), 1869 STM32_TIM(TIM4_K, "tim4_k", "ck1_tim", RCC_APB1ENSETR, 2), 1870 STM32_TIM(TIM5_K, "tim5_k", "ck1_tim", RCC_APB1ENSETR, 3), 1871 STM32_TIM(TIM6_K, "tim6_k", "ck1_tim", RCC_APB1ENSETR, 4), 1872 STM32_TIM(TIM7_K, "tim7_k", "ck1_tim", RCC_APB1ENSETR, 5), 1873 STM32_TIM(TIM12_K, "tim12_k", "ck1_tim", RCC_APB1ENSETR, 6), 1874 STM32_TIM(TIM13_K, "tim13_k", "ck1_tim", RCC_APB1ENSETR, 7), 1875 STM32_TIM(TIM14_K, "tim14_k", "ck1_tim", RCC_APB1ENSETR, 8), 1876 STM32_TIM(TIM1_K, "tim1_k", "ck2_tim", RCC_APB2ENSETR, 0), 1877 STM32_TIM(TIM8_K, "tim8_k", "ck2_tim", RCC_APB2ENSETR, 1), 1878 STM32_TIM(TIM15_K, "tim15_k", "ck2_tim", RCC_APB2ENSETR, 2), 1879 STM32_TIM(TIM16_K, "tim16_k", "ck2_tim", RCC_APB2ENSETR, 3), 1880 STM32_TIM(TIM17_K, "tim17_k", "ck2_tim", RCC_APB2ENSETR, 4), 1881 1882 /* Peripheral clocks */ 1883 PCLK(TIM2, "tim2", "pclk1", CLK_IGNORE_UNUSED, G_TIM2), 1884 PCLK(TIM3, "tim3", "pclk1", CLK_IGNORE_UNUSED, G_TIM3), 1885 PCLK(TIM4, "tim4", "pclk1", CLK_IGNORE_UNUSED, G_TIM4), 1886 PCLK(TIM5, "tim5", "pclk1", CLK_IGNORE_UNUSED, G_TIM5), 1887 PCLK(TIM6, "tim6", "pclk1", CLK_IGNORE_UNUSED, G_TIM6), 1888 PCLK(TIM7, "tim7", "pclk1", CLK_IGNORE_UNUSED, G_TIM7), 1889 PCLK(TIM12, "tim12", "pclk1", CLK_IGNORE_UNUSED, G_TIM12), 1890 PCLK(TIM13, "tim13", "pclk1", CLK_IGNORE_UNUSED, G_TIM13), 1891 PCLK(TIM14, "tim14", "pclk1", CLK_IGNORE_UNUSED, G_TIM14), 1892 PCLK(LPTIM1, "lptim1", "pclk1", 0, G_LPTIM1), 1893 PCLK(SPI2, "spi2", "pclk1", 0, G_SPI2), 1894 PCLK(SPI3, "spi3", "pclk1", 0, G_SPI3), 1895 PCLK(USART2, "usart2", "pclk1", 0, G_USART2), 1896 PCLK(USART3, "usart3", "pclk1", 0, G_USART3), 1897 PCLK(UART4, "uart4", "pclk1", 0, G_UART4), 1898 PCLK(UART5, "uart5", "pclk1", 0, G_UART5), 1899 PCLK(UART7, "uart7", "pclk1", 0, G_UART7), 1900 PCLK(UART8, "uart8", "pclk1", 0, G_UART8), 1901 PCLK(I2C1, "i2c1", "pclk1", 0, G_I2C1), 1902 PCLK(I2C2, "i2c2", "pclk1", 0, G_I2C2), 1903 PCLK(I2C3, "i2c3", "pclk1", 0, G_I2C3), 1904 PCLK(I2C5, "i2c5", "pclk1", 0, G_I2C5), 1905 PCLK(SPDIF, "spdif", "pclk1", 0, G_SPDIF), 1906 PCLK(CEC, "cec", "pclk1", 0, G_CEC), 1907 PCLK(DAC12, "dac12", "pclk1", 0, G_DAC12), 1908 PCLK(MDIO, "mdio", "pclk1", 0, G_MDIO), 1909 PCLK(TIM1, "tim1", "pclk2", CLK_IGNORE_UNUSED, G_TIM1), 1910 PCLK(TIM8, "tim8", "pclk2", CLK_IGNORE_UNUSED, G_TIM8), 1911 PCLK(TIM15, "tim15", "pclk2", CLK_IGNORE_UNUSED, G_TIM15), 1912 PCLK(TIM16, "tim16", "pclk2", CLK_IGNORE_UNUSED, G_TIM16), 1913 PCLK(TIM17, "tim17", "pclk2", CLK_IGNORE_UNUSED, G_TIM17), 1914 PCLK(SPI1, "spi1", "pclk2", 0, G_SPI1), 1915 PCLK(SPI4, "spi4", "pclk2", 0, G_SPI4), 1916 PCLK(SPI5, "spi5", "pclk2", 0, G_SPI5), 1917 PCLK(USART6, "usart6", "pclk2", 0, G_USART6), 1918 PCLK(SAI1, "sai1", "pclk2", 0, G_SAI1), 1919 PCLK(SAI2, "sai2", "pclk2", 0, G_SAI2), 1920 PCLK(SAI3, "sai3", "pclk2", 0, G_SAI3), 1921 PCLK(DFSDM, "dfsdm", "pclk2", 0, G_DFSDM), 1922 PCLK(FDCAN, "fdcan", "pclk2", 0, G_FDCAN), 1923 PCLK(LPTIM2, "lptim2", "pclk3", 0, G_LPTIM2), 1924 PCLK(LPTIM3, "lptim3", "pclk3", 0, G_LPTIM3), 1925 PCLK(LPTIM4, "lptim4", "pclk3", 0, G_LPTIM4), 1926 PCLK(LPTIM5, "lptim5", "pclk3", 0, G_LPTIM5), 1927 PCLK(SAI4, "sai4", "pclk3", 0, G_SAI4), 1928 PCLK(SYSCFG, "syscfg", "pclk3", 0, G_SYSCFG), 1929 PCLK(VREF, "vref", "pclk3", 13, G_VREF), 1930 PCLK(TMPSENS, "tmpsens", "pclk3", 0, G_TMPSENS), 1931 PCLK(PMBCTRL, "pmbctrl", "pclk3", 0, G_PMBCTRL), 1932 PCLK(HDP, "hdp", "pclk3", 0, G_HDP), 1933 PCLK(LTDC, "ltdc", "pclk4", 0, G_LTDC), 1934 PCLK(DSI, "dsi", "pclk4", 0, G_DSI), 1935 PCLK(IWDG2, "iwdg2", "pclk4", 0, G_IWDG2), 1936 PCLK(USBPHY, "usbphy", "pclk4", 0, G_USBPHY), 1937 PCLK(STGENRO, "stgenro", "pclk4", 0, G_STGENRO), 1938 PCLK(SPI6, "spi6", "pclk5", 0, G_SPI6), 1939 PCLK(I2C4, "i2c4", "pclk5", 0, G_I2C4), 1940 PCLK(I2C6, "i2c6", "pclk5", 0, G_I2C6), 1941 PCLK(USART1, "usart1", "pclk5", 0, G_USART1), 1942 PCLK(RTCAPB, "rtcapb", "pclk5", CLK_IGNORE_UNUSED | 1943 CLK_IS_CRITICAL, G_RTCAPB), 1944 PCLK(TZC1, "tzc1", "ck_axi", CLK_IGNORE_UNUSED, G_TZC1), 1945 PCLK(TZC2, "tzc2", "ck_axi", CLK_IGNORE_UNUSED, G_TZC2), 1946 PCLK(TZPC, "tzpc", "pclk5", CLK_IGNORE_UNUSED, G_TZPC), 1947 PCLK(IWDG1, "iwdg1", "pclk5", 0, G_IWDG1), 1948 PCLK(BSEC, "bsec", "pclk5", CLK_IGNORE_UNUSED, G_BSEC), 1949 PCLK(STGEN, "stgen", "pclk5", CLK_IGNORE_UNUSED, G_STGEN), 1950 PCLK(DMA1, "dma1", "ck_mcu", 0, G_DMA1), 1951 PCLK(DMA2, "dma2", "ck_mcu", 0, G_DMA2), 1952 PCLK(DMAMUX, "dmamux", "ck_mcu", 0, G_DMAMUX), 1953 PCLK(ADC12, "adc12", "ck_mcu", 0, G_ADC12), 1954 PCLK(USBO, "usbo", "ck_mcu", 0, G_USBO), 1955 PCLK(SDMMC3, "sdmmc3", "ck_mcu", 0, G_SDMMC3), 1956 PCLK(DCMI, "dcmi", "ck_mcu", 0, G_DCMI), 1957 PCLK(CRYP2, "cryp2", "ck_mcu", 0, G_CRYP2), 1958 PCLK(HASH2, "hash2", "ck_mcu", 0, G_HASH2), 1959 PCLK(RNG2, "rng2", "ck_mcu", 0, G_RNG2), 1960 PCLK(CRC2, "crc2", "ck_mcu", 0, G_CRC2), 1961 PCLK(HSEM, "hsem", "ck_mcu", 0, G_HSEM), 1962 PCLK(IPCC, "ipcc", "ck_mcu", 0, G_IPCC), 1963 PCLK(GPIOA, "gpioa", "ck_mcu", 0, G_GPIOA), 1964 PCLK(GPIOB, "gpiob", "ck_mcu", 0, G_GPIOB), 1965 PCLK(GPIOC, "gpioc", "ck_mcu", 0, G_GPIOC), 1966 PCLK(GPIOD, "gpiod", "ck_mcu", 0, G_GPIOD), 1967 PCLK(GPIOE, "gpioe", "ck_mcu", 0, G_GPIOE), 1968 PCLK(GPIOF, "gpiof", "ck_mcu", 0, G_GPIOF), 1969 PCLK(GPIOG, "gpiog", "ck_mcu", 0, G_GPIOG), 1970 PCLK(GPIOH, "gpioh", "ck_mcu", 0, G_GPIOH), 1971 PCLK(GPIOI, "gpioi", "ck_mcu", 0, G_GPIOI), 1972 PCLK(GPIOJ, "gpioj", "ck_mcu", 0, G_GPIOJ), 1973 PCLK(GPIOK, "gpiok", "ck_mcu", 0, G_GPIOK), 1974 PCLK(GPIOZ, "gpioz", "ck_axi", CLK_IGNORE_UNUSED, G_GPIOZ), 1975 PCLK(CRYP1, "cryp1", "ck_axi", CLK_IGNORE_UNUSED, G_CRYP1), 1976 PCLK(HASH1, "hash1", "ck_axi", CLK_IGNORE_UNUSED, G_HASH1), 1977 PCLK(RNG1, "rng1", "ck_axi", 0, G_RNG1), 1978 PCLK(BKPSRAM, "bkpsram", "ck_axi", CLK_IGNORE_UNUSED, G_BKPSRAM), 1979 PCLK(MDMA, "mdma", "ck_axi", 0, G_MDMA), 1980 PCLK(GPU, "gpu", "ck_axi", 0, G_GPU), 1981 PCLK(ETHTX, "ethtx", "ck_axi", 0, G_ETHTX), 1982 PCLK_PDATA(ETHRX, "ethrx", ethrx_src, 0, G_ETHRX), 1983 PCLK(ETHMAC, "ethmac", "ck_axi", 0, G_ETHMAC), 1984 PCLK(FMC, "fmc", "ck_axi", CLK_IGNORE_UNUSED, G_FMC), 1985 PCLK(QSPI, "qspi", "ck_axi", CLK_IGNORE_UNUSED, G_QSPI), 1986 PCLK(SDMMC1, "sdmmc1", "ck_axi", 0, G_SDMMC1), 1987 PCLK(SDMMC2, "sdmmc2", "ck_axi", 0, G_SDMMC2), 1988 PCLK(CRC1, "crc1", "ck_axi", 0, G_CRC1), 1989 PCLK(USBH, "usbh", "ck_axi", 0, G_USBH), 1990 PCLK(ETHSTP, "ethstp", "ck_axi", 0, G_ETHSTP), 1991 PCLK(DDRPERFM, "ddrperfm", "pclk4", 0, G_DDRPERFM), 1992 1993 /* Kernel clocks */ 1994 KCLK(SDMMC1_K, "sdmmc1_k", sdmmc12_src, 0, G_SDMMC1, M_SDMMC12), 1995 KCLK(SDMMC2_K, "sdmmc2_k", sdmmc12_src, 0, G_SDMMC2, M_SDMMC12), 1996 KCLK(SDMMC3_K, "sdmmc3_k", sdmmc3_src, 0, G_SDMMC3, M_SDMMC3), 1997 KCLK(FMC_K, "fmc_k", fmc_src, 0, G_FMC, M_FMC), 1998 KCLK(QSPI_K, "qspi_k", qspi_src, 0, G_QSPI, M_QSPI), 1999 KCLK(RNG1_K, "rng1_k", rng_src, 0, G_RNG1, M_RNG1), 2000 KCLK(RNG2_K, "rng2_k", rng_src, 0, G_RNG2, M_RNG2), 2001 KCLK(USBPHY_K, "usbphy_k", usbphy_src, 0, G_USBPHY, M_USBPHY), 2002 KCLK(STGEN_K, "stgen_k", stgen_src, CLK_IS_CRITICAL, G_STGEN, M_STGEN), 2003 KCLK(SPDIF_K, "spdif_k", spdif_src, 0, G_SPDIF, M_SPDIF), 2004 KCLK(SPI1_K, "spi1_k", spi123_src, 0, G_SPI1, M_SPI1), 2005 KCLK(SPI2_K, "spi2_k", spi123_src, 0, G_SPI2, M_SPI23), 2006 KCLK(SPI3_K, "spi3_k", spi123_src, 0, G_SPI3, M_SPI23), 2007 KCLK(SPI4_K, "spi4_k", spi45_src, 0, G_SPI4, M_SPI45), 2008 KCLK(SPI5_K, "spi5_k", spi45_src, 0, G_SPI5, M_SPI45), 2009 KCLK(SPI6_K, "spi6_k", spi6_src, 0, G_SPI6, M_SPI6), 2010 KCLK(CEC_K, "cec_k", cec_src, 0, G_CEC, M_CEC), 2011 KCLK(I2C1_K, "i2c1_k", i2c12_src, 0, G_I2C1, M_I2C12), 2012 KCLK(I2C2_K, "i2c2_k", i2c12_src, 0, G_I2C2, M_I2C12), 2013 KCLK(I2C3_K, "i2c3_k", i2c35_src, 0, G_I2C3, M_I2C35), 2014 KCLK(I2C5_K, "i2c5_k", i2c35_src, 0, G_I2C5, M_I2C35), 2015 KCLK(I2C4_K, "i2c4_k", i2c46_src, 0, G_I2C4, M_I2C46), 2016 KCLK(I2C6_K, "i2c6_k", i2c46_src, 0, G_I2C6, M_I2C46), 2017 KCLK(LPTIM1_K, "lptim1_k", lptim1_src, 0, G_LPTIM1, M_LPTIM1), 2018 KCLK(LPTIM2_K, "lptim2_k", lptim23_src, 0, G_LPTIM2, M_LPTIM23), 2019 KCLK(LPTIM3_K, "lptim3_k", lptim23_src, 0, G_LPTIM3, M_LPTIM23), 2020 KCLK(LPTIM4_K, "lptim4_k", lptim45_src, 0, G_LPTIM4, M_LPTIM45), 2021 KCLK(LPTIM5_K, "lptim5_k", lptim45_src, 0, G_LPTIM5, M_LPTIM45), 2022 KCLK(USART1_K, "usart1_k", usart1_src, 0, G_USART1, M_USART1), 2023 KCLK(USART2_K, "usart2_k", usart234578_src, 0, G_USART2, M_UART24), 2024 KCLK(USART3_K, "usart3_k", usart234578_src, 0, G_USART3, M_UART35), 2025 KCLK(UART4_K, "uart4_k", usart234578_src, 0, G_UART4, M_UART24), 2026 KCLK(UART5_K, "uart5_k", usart234578_src, 0, G_UART5, M_UART35), 2027 KCLK(USART6_K, "uart6_k", usart6_src, 0, G_USART6, M_USART6), 2028 KCLK(UART7_K, "uart7_k", usart234578_src, 0, G_UART7, M_UART78), 2029 KCLK(UART8_K, "uart8_k", usart234578_src, 0, G_UART8, M_UART78), 2030 KCLK(FDCAN_K, "fdcan_k", fdcan_src, 0, G_FDCAN, M_FDCAN), 2031 KCLK(SAI1_K, "sai1_k", sai_src, 0, G_SAI1, M_SAI1), 2032 KCLK(SAI2_K, "sai2_k", sai2_src, 0, G_SAI2, M_SAI2), 2033 KCLK(SAI3_K, "sai3_k", sai_src, 0, G_SAI3, M_SAI3), 2034 KCLK(SAI4_K, "sai4_k", sai_src, 0, G_SAI4, M_SAI4), 2035 KCLK(ADC12_K, "adc12_k", adc12_src, 0, G_ADC12, M_ADC12), 2036 KCLK(DSI_K, "dsi_k", dsi_src, 0, G_DSI, M_DSI), 2037 KCLK(ADFSDM_K, "adfsdm_k", sai_src, 0, G_ADFSDM, M_SAI1), 2038 KCLK(USBO_K, "usbo_k", usbo_src, 0, G_USBO, M_USBO), 2039 2040 /* Particulary Kernel Clocks (no mux or no gate) */ 2041 MGATE_MP1(DFSDM_K, "dfsdm_k", "ck_mcu", 0, G_DFSDM), 2042 MGATE_MP1(DSI_PX, "dsi_px", "pll4_q", CLK_SET_RATE_PARENT, G_DSI), 2043 MGATE_MP1(LTDC_PX, "ltdc_px", "pll4_q", CLK_SET_RATE_PARENT, G_LTDC), 2044 MGATE_MP1(GPU_K, "gpu_k", "pll2_q", 0, G_GPU), 2045 MGATE_MP1(DAC12_K, "dac12_k", "ck_lsi", 0, G_DAC12), 2046 2047 COMPOSITE(NO_ID, "ck_ker_eth", eth_src, CLK_OPS_PARENT_ENABLE | 2048 CLK_SET_RATE_NO_REPARENT, 2049 _NO_GATE, 2050 _MMUX(M_ETHCK), 2051 _NO_DIV), 2052 2053 MGATE_MP1(ETHCK_K, "ethck_k", "ck_ker_eth", 0, G_ETHCK), 2054 2055 DIV(ETHPTP_K, "ethptp_k", "ck_ker_eth", CLK_OPS_PARENT_ENABLE | 2056 CLK_SET_RATE_NO_REPARENT, RCC_ETHCKSELR, 4, 4, 0), 2057 2058 /* RTC clock */ 2059 COMPOSITE(RTC, "ck_rtc", rtc_src, CLK_OPS_PARENT_ENABLE, 2060 _GATE(RCC_BDCR, 20, 0), 2061 _MUX(RCC_BDCR, 16, 2, 0), 2062 _DIV_RTC(RCC_RTCDIVR, 0, 6, 0, NULL)), 2063 2064 /* MCO clocks */ 2065 COMPOSITE(CK_MCO1, "ck_mco1", mco1_src, CLK_OPS_PARENT_ENABLE | 2066 CLK_SET_RATE_NO_REPARENT, 2067 _GATE(RCC_MCO1CFGR, 12, 0), 2068 _MUX(RCC_MCO1CFGR, 0, 3, 0), 2069 _DIV(RCC_MCO1CFGR, 4, 4, 0, NULL)), 2070 2071 COMPOSITE(CK_MCO2, "ck_mco2", mco2_src, CLK_OPS_PARENT_ENABLE | 2072 CLK_SET_RATE_NO_REPARENT, 2073 _GATE(RCC_MCO2CFGR, 12, 0), 2074 _MUX(RCC_MCO2CFGR, 0, 3, 0), 2075 _DIV(RCC_MCO2CFGR, 4, 4, 0, NULL)), 2076 2077 /* Debug clocks */ 2078 GATE(CK_DBG, "ck_sys_dbg", "ck_axi", CLK_IGNORE_UNUSED, 2079 RCC_DBGCFGR, 8, 0), 2080 2081 COMPOSITE(CK_TRACE, "ck_trace", ck_trace_src, CLK_OPS_PARENT_ENABLE, 2082 _GATE(RCC_DBGCFGR, 9, 0), 2083 _NO_MUX, 2084 _DIV(RCC_DBGCFGR, 0, 3, 0, ck_trace_div_table)), 2085 }; 2086 2087 static const u32 stm32mp1_clock_secured[] = { 2088 CK_HSE, 2089 CK_HSI, 2090 CK_CSI, 2091 CK_LSI, 2092 CK_LSE, 2093 PLL1, 2094 PLL2, 2095 PLL1_P, 2096 PLL2_P, 2097 PLL2_Q, 2098 PLL2_R, 2099 CK_MPU, 2100 CK_AXI, 2101 SPI6, 2102 I2C4, 2103 I2C6, 2104 USART1, 2105 RTCAPB, 2106 TZC1, 2107 TZC2, 2108 TZPC, 2109 IWDG1, 2110 BSEC, 2111 STGEN, 2112 GPIOZ, 2113 CRYP1, 2114 HASH1, 2115 RNG1, 2116 BKPSRAM, 2117 RNG1_K, 2118 STGEN_K, 2119 SPI6_K, 2120 I2C4_K, 2121 I2C6_K, 2122 USART1_K, 2123 RTC, 2124 }; 2125 2126 static bool stm32_check_security(const struct clock_config *cfg) 2127 { 2128 int i; 2129 2130 for (i = 0; i < ARRAY_SIZE(stm32mp1_clock_secured); i++) 2131 if (cfg->id == stm32mp1_clock_secured[i]) 2132 return true; 2133 return false; 2134 } 2135 2136 struct stm32_rcc_match_data { 2137 const struct clock_config *cfg; 2138 unsigned int num; 2139 unsigned int maxbinding; 2140 u32 clear_offset; 2141 bool (*check_security)(const struct clock_config *cfg); 2142 }; 2143 2144 static struct stm32_rcc_match_data stm32mp1_data = { 2145 .cfg = stm32mp1_clock_cfg, 2146 .num = ARRAY_SIZE(stm32mp1_clock_cfg), 2147 .maxbinding = STM32MP1_LAST_CLK, 2148 .clear_offset = RCC_CLR, 2149 }; 2150 2151 static struct stm32_rcc_match_data stm32mp1_data_secure = { 2152 .cfg = stm32mp1_clock_cfg, 2153 .num = ARRAY_SIZE(stm32mp1_clock_cfg), 2154 .maxbinding = STM32MP1_LAST_CLK, 2155 .clear_offset = RCC_CLR, 2156 .check_security = &stm32_check_security 2157 }; 2158 2159 static const struct of_device_id stm32mp1_match_data[] = { 2160 { 2161 .compatible = "st,stm32mp1-rcc", 2162 .data = &stm32mp1_data, 2163 }, 2164 { 2165 .compatible = "st,stm32mp1-rcc-secure", 2166 .data = &stm32mp1_data_secure, 2167 }, 2168 { } 2169 }; 2170 MODULE_DEVICE_TABLE(of, stm32mp1_match_data); 2171 2172 static int stm32_register_hw_clk(struct device *dev, 2173 struct clk_hw_onecell_data *clk_data, 2174 void __iomem *base, spinlock_t *lock, 2175 const struct clock_config *cfg) 2176 { 2177 struct clk_hw **hws; 2178 struct clk_hw *hw = ERR_PTR(-ENOENT); 2179 2180 hws = clk_data->hws; 2181 2182 if (cfg->func) 2183 hw = (*cfg->func)(dev, clk_data, base, lock, cfg); 2184 2185 if (IS_ERR(hw)) { 2186 pr_err("Unable to register %s\n", cfg->name); 2187 return PTR_ERR(hw); 2188 } 2189 2190 if (cfg->id != NO_ID) 2191 hws[cfg->id] = hw; 2192 2193 return 0; 2194 } 2195 2196 #define STM32_RESET_ID_MASK GENMASK(15, 0) 2197 2198 struct stm32_reset_data { 2199 /* reset lock */ 2200 spinlock_t lock; 2201 struct reset_controller_dev rcdev; 2202 void __iomem *membase; 2203 u32 clear_offset; 2204 }; 2205 2206 static inline struct stm32_reset_data * 2207 to_stm32_reset_data(struct reset_controller_dev *rcdev) 2208 { 2209 return container_of(rcdev, struct stm32_reset_data, rcdev); 2210 } 2211 2212 static int stm32_reset_update(struct reset_controller_dev *rcdev, 2213 unsigned long id, bool assert) 2214 { 2215 struct stm32_reset_data *data = to_stm32_reset_data(rcdev); 2216 int reg_width = sizeof(u32); 2217 int bank = id / (reg_width * BITS_PER_BYTE); 2218 int offset = id % (reg_width * BITS_PER_BYTE); 2219 2220 if (data->clear_offset) { 2221 void __iomem *addr; 2222 2223 addr = data->membase + (bank * reg_width); 2224 if (!assert) 2225 addr += data->clear_offset; 2226 2227 writel(BIT(offset), addr); 2228 2229 } else { 2230 unsigned long flags; 2231 u32 reg; 2232 2233 spin_lock_irqsave(&data->lock, flags); 2234 2235 reg = readl(data->membase + (bank * reg_width)); 2236 2237 if (assert) 2238 reg |= BIT(offset); 2239 else 2240 reg &= ~BIT(offset); 2241 2242 writel(reg, data->membase + (bank * reg_width)); 2243 2244 spin_unlock_irqrestore(&data->lock, flags); 2245 } 2246 2247 return 0; 2248 } 2249 2250 static int stm32_reset_assert(struct reset_controller_dev *rcdev, 2251 unsigned long id) 2252 { 2253 return stm32_reset_update(rcdev, id, true); 2254 } 2255 2256 static int stm32_reset_deassert(struct reset_controller_dev *rcdev, 2257 unsigned long id) 2258 { 2259 return stm32_reset_update(rcdev, id, false); 2260 } 2261 2262 static int stm32_reset_status(struct reset_controller_dev *rcdev, 2263 unsigned long id) 2264 { 2265 struct stm32_reset_data *data = to_stm32_reset_data(rcdev); 2266 int reg_width = sizeof(u32); 2267 int bank = id / (reg_width * BITS_PER_BYTE); 2268 int offset = id % (reg_width * BITS_PER_BYTE); 2269 u32 reg; 2270 2271 reg = readl(data->membase + (bank * reg_width)); 2272 2273 return !!(reg & BIT(offset)); 2274 } 2275 2276 static const struct reset_control_ops stm32_reset_ops = { 2277 .assert = stm32_reset_assert, 2278 .deassert = stm32_reset_deassert, 2279 .status = stm32_reset_status, 2280 }; 2281 2282 static int stm32_rcc_reset_init(struct device *dev, void __iomem *base, 2283 const struct of_device_id *match) 2284 { 2285 const struct stm32_rcc_match_data *data = match->data; 2286 struct stm32_reset_data *reset_data = NULL; 2287 2288 reset_data = kzalloc(sizeof(*reset_data), GFP_KERNEL); 2289 if (!reset_data) 2290 return -ENOMEM; 2291 2292 spin_lock_init(&reset_data->lock); 2293 reset_data->membase = base; 2294 reset_data->rcdev.owner = THIS_MODULE; 2295 reset_data->rcdev.ops = &stm32_reset_ops; 2296 reset_data->rcdev.of_node = dev_of_node(dev); 2297 reset_data->rcdev.nr_resets = STM32_RESET_ID_MASK; 2298 reset_data->clear_offset = data->clear_offset; 2299 2300 return reset_controller_register(&reset_data->rcdev); 2301 } 2302 2303 static int stm32_rcc_clock_init(struct device *dev, void __iomem *base, 2304 const struct of_device_id *match) 2305 { 2306 const struct stm32_rcc_match_data *data = match->data; 2307 struct clk_hw_onecell_data *clk_data; 2308 struct clk_hw **hws; 2309 int err, n, max_binding; 2310 2311 max_binding = data->maxbinding; 2312 2313 clk_data = devm_kzalloc(dev, struct_size(clk_data, hws, max_binding), 2314 GFP_KERNEL); 2315 if (!clk_data) 2316 return -ENOMEM; 2317 2318 clk_data->num = max_binding; 2319 2320 hws = clk_data->hws; 2321 2322 for (n = 0; n < max_binding; n++) 2323 hws[n] = ERR_PTR(-ENOENT); 2324 2325 for (n = 0; n < data->num; n++) { 2326 if (data->check_security && data->check_security(&data->cfg[n])) 2327 continue; 2328 2329 err = stm32_register_hw_clk(dev, clk_data, base, &rlock, 2330 &data->cfg[n]); 2331 if (err) { 2332 dev_err(dev, "Can't register clk %s: %d\n", 2333 data->cfg[n].name, err); 2334 2335 return err; 2336 } 2337 } 2338 2339 return of_clk_add_hw_provider(dev_of_node(dev), of_clk_hw_onecell_get, clk_data); 2340 } 2341 2342 static int stm32_rcc_init(struct device *dev, void __iomem *base, 2343 const struct of_device_id *match_data) 2344 { 2345 const struct of_device_id *match; 2346 int err; 2347 2348 match = of_match_node(match_data, dev_of_node(dev)); 2349 if (!match) { 2350 dev_err(dev, "match data not found\n"); 2351 return -ENODEV; 2352 } 2353 2354 /* RCC Reset Configuration */ 2355 err = stm32_rcc_reset_init(dev, base, match); 2356 if (err) { 2357 pr_err("stm32mp1 reset failed to initialize\n"); 2358 return err; 2359 } 2360 2361 /* RCC Clock Configuration */ 2362 err = stm32_rcc_clock_init(dev, base, match); 2363 if (err) { 2364 pr_err("stm32mp1 clock failed to initialize\n"); 2365 return err; 2366 } 2367 2368 return 0; 2369 } 2370 2371 static int stm32mp1_rcc_init(struct device *dev) 2372 { 2373 void __iomem *base; 2374 int ret; 2375 2376 base = of_iomap(dev_of_node(dev), 0); 2377 if (!base) { 2378 pr_err("%pOFn: unable to map resource", dev_of_node(dev)); 2379 ret = -ENOMEM; 2380 goto out; 2381 } 2382 2383 ret = stm32_rcc_init(dev, base, stm32mp1_match_data); 2384 2385 out: 2386 if (ret) { 2387 if (base) 2388 iounmap(base); 2389 2390 of_node_put(dev_of_node(dev)); 2391 } 2392 2393 return ret; 2394 } 2395 2396 static int get_clock_deps(struct device *dev) 2397 { 2398 static const char * const clock_deps_name[] = { 2399 "hsi", "hse", "csi", "lsi", "lse", 2400 }; 2401 size_t deps_size = sizeof(struct clk *) * ARRAY_SIZE(clock_deps_name); 2402 struct clk **clk_deps; 2403 int i; 2404 2405 clk_deps = devm_kzalloc(dev, deps_size, GFP_KERNEL); 2406 if (!clk_deps) 2407 return -ENOMEM; 2408 2409 for (i = 0; i < ARRAY_SIZE(clock_deps_name); i++) { 2410 struct clk *clk = of_clk_get_by_name(dev_of_node(dev), 2411 clock_deps_name[i]); 2412 2413 if (IS_ERR(clk)) { 2414 if (PTR_ERR(clk) != -EINVAL && PTR_ERR(clk) != -ENOENT) 2415 return PTR_ERR(clk); 2416 } else { 2417 /* Device gets a reference count on the clock */ 2418 clk_deps[i] = devm_clk_get(dev, __clk_get_name(clk)); 2419 clk_put(clk); 2420 } 2421 } 2422 2423 return 0; 2424 } 2425 2426 static int stm32mp1_rcc_clocks_probe(struct platform_device *pdev) 2427 { 2428 struct device *dev = &pdev->dev; 2429 int ret = get_clock_deps(dev); 2430 2431 if (!ret) 2432 ret = stm32mp1_rcc_init(dev); 2433 2434 return ret; 2435 } 2436 2437 static int stm32mp1_rcc_clocks_remove(struct platform_device *pdev) 2438 { 2439 struct device *dev = &pdev->dev; 2440 struct device_node *child, *np = dev_of_node(dev); 2441 2442 for_each_available_child_of_node(np, child) 2443 of_clk_del_provider(child); 2444 2445 return 0; 2446 } 2447 2448 static struct platform_driver stm32mp1_rcc_clocks_driver = { 2449 .driver = { 2450 .name = "stm32mp1_rcc", 2451 .of_match_table = stm32mp1_match_data, 2452 }, 2453 .probe = stm32mp1_rcc_clocks_probe, 2454 .remove = stm32mp1_rcc_clocks_remove, 2455 }; 2456 2457 static int __init stm32mp1_clocks_init(void) 2458 { 2459 return platform_driver_register(&stm32mp1_rcc_clocks_driver); 2460 } 2461 core_initcall(stm32mp1_clocks_init); 2462