1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * Copyright (c) 2012, NVIDIA CORPORATION. All rights reserved. 4 */ 5 6 #ifndef __TEGRA_CLK_H 7 #define __TEGRA_CLK_H 8 9 #include <linux/clk-provider.h> 10 #include <linux/clkdev.h> 11 #include <linux/delay.h> 12 13 #define CLK_OUT_ENB_L 0x010 14 #define CLK_OUT_ENB_H 0x014 15 #define CLK_OUT_ENB_U 0x018 16 #define CLK_OUT_ENB_V 0x360 17 #define CLK_OUT_ENB_W 0x364 18 #define CLK_OUT_ENB_X 0x280 19 #define CLK_OUT_ENB_Y 0x298 20 #define CLK_ENB_PLLP_OUT_CPU BIT(31) 21 #define CLK_OUT_ENB_SET_L 0x320 22 #define CLK_OUT_ENB_CLR_L 0x324 23 #define CLK_OUT_ENB_SET_H 0x328 24 #define CLK_OUT_ENB_CLR_H 0x32c 25 #define CLK_OUT_ENB_SET_U 0x330 26 #define CLK_OUT_ENB_CLR_U 0x334 27 #define CLK_OUT_ENB_SET_V 0x440 28 #define CLK_OUT_ENB_CLR_V 0x444 29 #define CLK_OUT_ENB_SET_W 0x448 30 #define CLK_OUT_ENB_CLR_W 0x44c 31 #define CLK_OUT_ENB_SET_X 0x284 32 #define CLK_OUT_ENB_CLR_X 0x288 33 #define CLK_OUT_ENB_SET_Y 0x29c 34 #define CLK_OUT_ENB_CLR_Y 0x2a0 35 36 #define RST_DEVICES_L 0x004 37 #define RST_DEVICES_H 0x008 38 #define RST_DEVICES_U 0x00C 39 #define RST_DEVICES_V 0x358 40 #define RST_DEVICES_W 0x35C 41 #define RST_DEVICES_X 0x28C 42 #define RST_DEVICES_Y 0x2a4 43 #define RST_DEVICES_SET_L 0x300 44 #define RST_DEVICES_CLR_L 0x304 45 #define RST_DEVICES_SET_H 0x308 46 #define RST_DEVICES_CLR_H 0x30c 47 #define RST_DEVICES_SET_U 0x310 48 #define RST_DEVICES_CLR_U 0x314 49 #define RST_DEVICES_SET_V 0x430 50 #define RST_DEVICES_CLR_V 0x434 51 #define RST_DEVICES_SET_W 0x438 52 #define RST_DEVICES_CLR_W 0x43c 53 #define RST_DEVICES_SET_X 0x290 54 #define RST_DEVICES_CLR_X 0x294 55 #define RST_DEVICES_SET_Y 0x2a8 56 #define RST_DEVICES_CLR_Y 0x2ac 57 58 /* 59 * Tegra CLK_OUT_ENB registers have some undefined bits which are not used and 60 * any accidental write of 1 to these bits can cause PSLVERR. 61 * So below are the valid mask defines for each CLK_OUT_ENB register used to 62 * turn ON only the valid clocks. 63 */ 64 #define TEGRA210_CLK_ENB_VLD_MSK_L 0xdcd7dff9 65 #define TEGRA210_CLK_ENB_VLD_MSK_H 0x87d1f3e7 66 #define TEGRA210_CLK_ENB_VLD_MSK_U 0xf3fed3fa 67 #define TEGRA210_CLK_ENB_VLD_MSK_V 0xffc18cfb 68 #define TEGRA210_CLK_ENB_VLD_MSK_W 0x793fb7ff 69 #define TEGRA210_CLK_ENB_VLD_MSK_X 0x3fe66fff 70 #define TEGRA210_CLK_ENB_VLD_MSK_Y 0xfc1fc7ff 71 72 /** 73 * struct tegra_clk_sync_source - external clock source from codec 74 * 75 * @hw: handle between common and hardware-specific interfaces 76 * @rate: input frequency from source 77 * @max_rate: max rate allowed 78 */ 79 struct tegra_clk_sync_source { 80 struct clk_hw hw; 81 unsigned long rate; 82 unsigned long max_rate; 83 }; 84 85 #define to_clk_sync_source(_hw) \ 86 container_of(_hw, struct tegra_clk_sync_source, hw) 87 88 extern const struct clk_ops tegra_clk_sync_source_ops; 89 extern int *periph_clk_enb_refcnt; 90 91 struct clk *tegra_clk_register_sync_source(const char *name, 92 unsigned long max_rate); 93 94 /** 95 * struct tegra_clk_frac_div - fractional divider clock 96 * 97 * @hw: handle between common and hardware-specific interfaces 98 * @reg: register containing divider 99 * @flags: hardware-specific flags 100 * @shift: shift to the divider bit field 101 * @width: width of the divider bit field 102 * @frac_width: width of the fractional bit field 103 * @lock: register lock 104 * 105 * Flags: 106 * TEGRA_DIVIDER_ROUND_UP - This flags indicates to round up the divider value. 107 * TEGRA_DIVIDER_FIXED - Fixed rate PLL dividers has addition override bit, this 108 * flag indicates that this divider is for fixed rate PLL. 109 * TEGRA_DIVIDER_INT - Some modules can not cope with the duty cycle when 110 * fraction bit is set. This flags indicates to calculate divider for which 111 * fracton bit will be zero. 112 * TEGRA_DIVIDER_UART - UART module divider has additional enable bit which is 113 * set when divider value is not 0. This flags indicates that the divider 114 * is for UART module. 115 */ 116 struct tegra_clk_frac_div { 117 struct clk_hw hw; 118 void __iomem *reg; 119 u8 flags; 120 u8 shift; 121 u8 width; 122 u8 frac_width; 123 spinlock_t *lock; 124 }; 125 126 #define to_clk_frac_div(_hw) container_of(_hw, struct tegra_clk_frac_div, hw) 127 128 #define TEGRA_DIVIDER_ROUND_UP BIT(0) 129 #define TEGRA_DIVIDER_FIXED BIT(1) 130 #define TEGRA_DIVIDER_INT BIT(2) 131 #define TEGRA_DIVIDER_UART BIT(3) 132 133 extern const struct clk_ops tegra_clk_frac_div_ops; 134 struct clk *tegra_clk_register_divider(const char *name, 135 const char *parent_name, void __iomem *reg, 136 unsigned long flags, u8 clk_divider_flags, u8 shift, u8 width, 137 u8 frac_width, spinlock_t *lock); 138 struct clk *tegra_clk_register_mc(const char *name, const char *parent_name, 139 void __iomem *reg, spinlock_t *lock); 140 141 /* 142 * Tegra PLL: 143 * 144 * In general, there are 3 requirements for each PLL 145 * that SW needs to be comply with. 146 * (1) Input frequency range (REF). 147 * (2) Comparison frequency range (CF). CF = REF/DIVM. 148 * (3) VCO frequency range (VCO). VCO = CF * DIVN. 149 * 150 * The final PLL output frequency (FO) = VCO >> DIVP. 151 */ 152 153 /** 154 * struct tegra_clk_pll_freq_table - PLL frequecy table 155 * 156 * @input_rate: input rate from source 157 * @output_rate: output rate from PLL for the input rate 158 * @n: feedback divider 159 * @m: input divider 160 * @p: post divider 161 * @cpcon: charge pump current 162 * @sdm_data: fraction divider setting (0 = disabled) 163 */ 164 struct tegra_clk_pll_freq_table { 165 unsigned long input_rate; 166 unsigned long output_rate; 167 u32 n; 168 u32 m; 169 u8 p; 170 u8 cpcon; 171 u16 sdm_data; 172 }; 173 174 /** 175 * struct pdiv_map - map post divider to hw value 176 * 177 * @pdiv: post divider 178 * @hw_val: value to be written to the PLL hw 179 */ 180 struct pdiv_map { 181 u8 pdiv; 182 u8 hw_val; 183 }; 184 185 /** 186 * struct div_nmp - offset and width of m,n and p fields 187 * 188 * @divn_shift: shift to the feedback divider bit field 189 * @divn_width: width of the feedback divider bit field 190 * @divm_shift: shift to the input divider bit field 191 * @divm_width: width of the input divider bit field 192 * @divp_shift: shift to the post divider bit field 193 * @divp_width: width of the post divider bit field 194 * @override_divn_shift: shift to the feedback divider bitfield in override reg 195 * @override_divm_shift: shift to the input divider bitfield in override reg 196 * @override_divp_shift: shift to the post divider bitfield in override reg 197 */ 198 struct div_nmp { 199 u8 divn_shift; 200 u8 divn_width; 201 u8 divm_shift; 202 u8 divm_width; 203 u8 divp_shift; 204 u8 divp_width; 205 u8 override_divn_shift; 206 u8 override_divm_shift; 207 u8 override_divp_shift; 208 }; 209 210 #define MAX_PLL_MISC_REG_COUNT 6 211 212 struct tegra_clk_pll; 213 214 /** 215 * struct tegra_clk_pll_params - PLL parameters 216 * 217 * @input_min: Minimum input frequency 218 * @input_max: Maximum input frequency 219 * @cf_min: Minimum comparison frequency 220 * @cf_max: Maximum comparison frequency 221 * @vco_min: Minimum VCO frequency 222 * @vco_max: Maximum VCO frequency 223 * @base_reg: PLL base reg offset 224 * @misc_reg: PLL misc reg offset 225 * @lock_reg: PLL lock reg offset 226 * @lock_mask: Bitmask for PLL lock status 227 * @lock_enable_bit_idx: Bit index to enable PLL lock 228 * @iddq_reg: PLL IDDQ register offset 229 * @iddq_bit_idx: Bit index to enable PLL IDDQ 230 * @reset_reg: Register offset of where RESET bit is 231 * @reset_bit_idx: Shift of reset bit in reset_reg 232 * @sdm_din_reg: Register offset where SDM settings are 233 * @sdm_din_mask: Mask of SDM divider bits 234 * @sdm_ctrl_reg: Register offset where SDM enable is 235 * @sdm_ctrl_en_mask: Mask of SDM enable bit 236 * @ssc_ctrl_reg: Register offset where SSC settings are 237 * @ssc_ctrl_en_mask: Mask of SSC enable bit 238 * @aux_reg: AUX register offset 239 * @dyn_ramp_reg: Dynamic ramp control register offset 240 * @ext_misc_reg: Miscellaneous control register offsets 241 * @pmc_divnm_reg: n, m divider PMC override register offset (PLLM) 242 * @pmc_divp_reg: p divider PMC override register offset (PLLM) 243 * @flags: PLL flags 244 * @stepa_shift: Dynamic ramp step A field shift 245 * @stepb_shift: Dynamic ramp step B field shift 246 * @lock_delay: Delay in us if PLL lock is not used 247 * @max_p: maximum value for the p divider 248 * @defaults_set: Boolean signaling all reg defaults for PLL set. 249 * @pdiv_tohw: mapping of p divider to register values 250 * @div_nmp: offsets and widths on n, m and p fields 251 * @freq_table: array of frequencies supported by PLL 252 * @fixed_rate: PLL rate if it is fixed 253 * @mdiv_default: Default value for fixed mdiv for this PLL 254 * @round_p_to_pdiv: Callback used to round p to the closed pdiv 255 * @set_gain: Callback to adjust N div for SDM enabled 256 * PLL's based on fractional divider value. 257 * @calc_rate: Callback used to change how out of table 258 * rates (dividers and multipler) are calculated. 259 * @adjust_vco: Callback to adjust the programming range of the 260 * divider range (if SDM is present) 261 * @set_defaults: Callback which will try to initialize PLL 262 * registers to sane default values. This is first 263 * tried during PLL registration, but if the PLL 264 * is already enabled, it will be done the first 265 * time the rate is changed while the PLL is 266 * disabled. 267 * @dyn_ramp: Callback which can be used to define a custom 268 * dynamic ramp function for a given PLL. 269 * @pre_rate_change: Callback which is invoked just before changing 270 * PLL's rate. 271 * @post_rate_change: Callback which is invoked right after changing 272 * PLL's rate. 273 * 274 * Flags: 275 * TEGRA_PLL_USE_LOCK - This flag indicated to use lock bits for 276 * PLL locking. If not set it will use lock_delay value to wait. 277 * TEGRA_PLL_HAS_CPCON - This flag indicates that CPCON value needs 278 * to be programmed to change output frequency of the PLL. 279 * TEGRA_PLL_SET_LFCON - This flag indicates that LFCON value needs 280 * to be programmed to change output frequency of the PLL. 281 * TEGRA_PLL_SET_DCCON - This flag indicates that DCCON value needs 282 * to be programmed to change output frequency of the PLL. 283 * TEGRA_PLLU - PLLU has inverted post divider. This flags indicated 284 * that it is PLLU and invert post divider value. 285 * TEGRA_PLLM - PLLM has additional override settings in PMC. This 286 * flag indicates that it is PLLM and use override settings. 287 * TEGRA_PLL_FIXED - We are not supposed to change output frequency 288 * of some plls. 289 * TEGRA_PLLE_CONFIGURE - Configure PLLE when enabling. 290 * TEGRA_PLL_LOCK_MISC - Lock bit is in the misc register instead of the 291 * base register. 292 * TEGRA_PLL_BYPASS - PLL has bypass bit 293 * TEGRA_PLL_HAS_LOCK_ENABLE - PLL has bit to enable lock monitoring 294 * TEGRA_MDIV_NEW - Switch to new method for calculating fixed mdiv 295 * it may be more accurate (especially if SDM present) 296 * TEGRA_PLLMB - PLLMB has should be treated similar to PLLM. This 297 * flag indicated that it is PLLMB. 298 * TEGRA_PLL_VCO_OUT - Used to indicate that the PLL has a VCO output 299 */ 300 struct tegra_clk_pll_params { 301 unsigned long input_min; 302 unsigned long input_max; 303 unsigned long cf_min; 304 unsigned long cf_max; 305 unsigned long vco_min; 306 unsigned long vco_max; 307 308 u32 base_reg; 309 u32 misc_reg; 310 u32 lock_reg; 311 u32 lock_mask; 312 u32 lock_enable_bit_idx; 313 u32 iddq_reg; 314 u32 iddq_bit_idx; 315 u32 reset_reg; 316 u32 reset_bit_idx; 317 u32 sdm_din_reg; 318 u32 sdm_din_mask; 319 u32 sdm_ctrl_reg; 320 u32 sdm_ctrl_en_mask; 321 u32 ssc_ctrl_reg; 322 u32 ssc_ctrl_en_mask; 323 u32 aux_reg; 324 u32 dyn_ramp_reg; 325 u32 ext_misc_reg[MAX_PLL_MISC_REG_COUNT]; 326 u32 pmc_divnm_reg; 327 u32 pmc_divp_reg; 328 u32 flags; 329 int stepa_shift; 330 int stepb_shift; 331 int lock_delay; 332 int max_p; 333 bool defaults_set; 334 const struct pdiv_map *pdiv_tohw; 335 struct div_nmp *div_nmp; 336 struct tegra_clk_pll_freq_table *freq_table; 337 unsigned long fixed_rate; 338 u16 mdiv_default; 339 u32 (*round_p_to_pdiv)(u32 p, u32 *pdiv); 340 void (*set_gain)(struct tegra_clk_pll_freq_table *cfg); 341 int (*calc_rate)(struct clk_hw *hw, 342 struct tegra_clk_pll_freq_table *cfg, 343 unsigned long rate, unsigned long parent_rate); 344 unsigned long (*adjust_vco)(struct tegra_clk_pll_params *pll_params, 345 unsigned long parent_rate); 346 void (*set_defaults)(struct tegra_clk_pll *pll); 347 int (*dyn_ramp)(struct tegra_clk_pll *pll, 348 struct tegra_clk_pll_freq_table *cfg); 349 int (*pre_rate_change)(void); 350 void (*post_rate_change)(void); 351 }; 352 353 #define TEGRA_PLL_USE_LOCK BIT(0) 354 #define TEGRA_PLL_HAS_CPCON BIT(1) 355 #define TEGRA_PLL_SET_LFCON BIT(2) 356 #define TEGRA_PLL_SET_DCCON BIT(3) 357 #define TEGRA_PLLU BIT(4) 358 #define TEGRA_PLLM BIT(5) 359 #define TEGRA_PLL_FIXED BIT(6) 360 #define TEGRA_PLLE_CONFIGURE BIT(7) 361 #define TEGRA_PLL_LOCK_MISC BIT(8) 362 #define TEGRA_PLL_BYPASS BIT(9) 363 #define TEGRA_PLL_HAS_LOCK_ENABLE BIT(10) 364 #define TEGRA_MDIV_NEW BIT(11) 365 #define TEGRA_PLLMB BIT(12) 366 #define TEGRA_PLL_VCO_OUT BIT(13) 367 368 /** 369 * struct tegra_clk_pll - Tegra PLL clock 370 * 371 * @hw: handle between common and hardware-specifix interfaces 372 * @clk_base: address of CAR controller 373 * @pmc: address of PMC, required to read override bits 374 * @lock: register lock 375 * @params: PLL parameters 376 */ 377 struct tegra_clk_pll { 378 struct clk_hw hw; 379 void __iomem *clk_base; 380 void __iomem *pmc; 381 spinlock_t *lock; 382 struct tegra_clk_pll_params *params; 383 }; 384 385 #define to_clk_pll(_hw) container_of(_hw, struct tegra_clk_pll, hw) 386 387 /** 388 * struct tegra_audio_clk_info - Tegra Audio Clk Information 389 * 390 * @name: name for the audio pll 391 * @pll_params: pll_params for audio pll 392 * @clk_id: clk_ids for the audio pll 393 * @parent: name of the parent of the audio pll 394 */ 395 struct tegra_audio_clk_info { 396 char *name; 397 struct tegra_clk_pll_params *pll_params; 398 int clk_id; 399 char *parent; 400 }; 401 402 extern const struct clk_ops tegra_clk_pll_ops; 403 extern const struct clk_ops tegra_clk_plle_ops; 404 struct clk *tegra_clk_register_pll(const char *name, const char *parent_name, 405 void __iomem *clk_base, void __iomem *pmc, 406 unsigned long flags, struct tegra_clk_pll_params *pll_params, 407 spinlock_t *lock); 408 409 struct clk *tegra_clk_register_plle(const char *name, const char *parent_name, 410 void __iomem *clk_base, void __iomem *pmc, 411 unsigned long flags, struct tegra_clk_pll_params *pll_params, 412 spinlock_t *lock); 413 414 struct clk *tegra_clk_register_pllxc(const char *name, const char *parent_name, 415 void __iomem *clk_base, void __iomem *pmc, 416 unsigned long flags, 417 struct tegra_clk_pll_params *pll_params, 418 spinlock_t *lock); 419 420 struct clk *tegra_clk_register_pllm(const char *name, const char *parent_name, 421 void __iomem *clk_base, void __iomem *pmc, 422 unsigned long flags, 423 struct tegra_clk_pll_params *pll_params, 424 spinlock_t *lock); 425 426 struct clk *tegra_clk_register_pllc(const char *name, const char *parent_name, 427 void __iomem *clk_base, void __iomem *pmc, 428 unsigned long flags, 429 struct tegra_clk_pll_params *pll_params, 430 spinlock_t *lock); 431 432 struct clk *tegra_clk_register_pllre(const char *name, const char *parent_name, 433 void __iomem *clk_base, void __iomem *pmc, 434 unsigned long flags, 435 struct tegra_clk_pll_params *pll_params, 436 spinlock_t *lock, unsigned long parent_rate); 437 438 struct clk *tegra_clk_register_pllre_tegra210(const char *name, 439 const char *parent_name, void __iomem *clk_base, 440 void __iomem *pmc, unsigned long flags, 441 struct tegra_clk_pll_params *pll_params, 442 spinlock_t *lock, unsigned long parent_rate); 443 444 struct clk *tegra_clk_register_plle_tegra114(const char *name, 445 const char *parent_name, 446 void __iomem *clk_base, unsigned long flags, 447 struct tegra_clk_pll_params *pll_params, 448 spinlock_t *lock); 449 450 struct clk *tegra_clk_register_plle_tegra210(const char *name, 451 const char *parent_name, 452 void __iomem *clk_base, unsigned long flags, 453 struct tegra_clk_pll_params *pll_params, 454 spinlock_t *lock); 455 456 struct clk *tegra_clk_register_pllc_tegra210(const char *name, 457 const char *parent_name, void __iomem *clk_base, 458 void __iomem *pmc, unsigned long flags, 459 struct tegra_clk_pll_params *pll_params, 460 spinlock_t *lock); 461 462 struct clk *tegra_clk_register_pllss_tegra210(const char *name, 463 const char *parent_name, void __iomem *clk_base, 464 unsigned long flags, 465 struct tegra_clk_pll_params *pll_params, 466 spinlock_t *lock); 467 468 struct clk *tegra_clk_register_pllss(const char *name, const char *parent_name, 469 void __iomem *clk_base, unsigned long flags, 470 struct tegra_clk_pll_params *pll_params, 471 spinlock_t *lock); 472 473 struct clk *tegra_clk_register_pllmb(const char *name, const char *parent_name, 474 void __iomem *clk_base, void __iomem *pmc, 475 unsigned long flags, 476 struct tegra_clk_pll_params *pll_params, 477 spinlock_t *lock); 478 479 struct clk *tegra_clk_register_pllu(const char *name, const char *parent_name, 480 void __iomem *clk_base, unsigned long flags, 481 struct tegra_clk_pll_params *pll_params, 482 spinlock_t *lock); 483 484 struct clk *tegra_clk_register_pllu_tegra114(const char *name, 485 const char *parent_name, 486 void __iomem *clk_base, unsigned long flags, 487 struct tegra_clk_pll_params *pll_params, 488 spinlock_t *lock); 489 490 struct clk *tegra_clk_register_pllu_tegra210(const char *name, 491 const char *parent_name, 492 void __iomem *clk_base, unsigned long flags, 493 struct tegra_clk_pll_params *pll_params, 494 spinlock_t *lock); 495 496 /** 497 * struct tegra_clk_pll_out - PLL divider down clock 498 * 499 * @hw: handle between common and hardware-specific interfaces 500 * @reg: register containing the PLL divider 501 * @enb_bit_idx: bit to enable/disable PLL divider 502 * @rst_bit_idx: bit to reset PLL divider 503 * @lock: register lock 504 * @flags: hardware-specific flags 505 */ 506 struct tegra_clk_pll_out { 507 struct clk_hw hw; 508 void __iomem *reg; 509 u8 enb_bit_idx; 510 u8 rst_bit_idx; 511 spinlock_t *lock; 512 u8 flags; 513 }; 514 515 #define to_clk_pll_out(_hw) container_of(_hw, struct tegra_clk_pll_out, hw) 516 517 extern const struct clk_ops tegra_clk_pll_out_ops; 518 struct clk *tegra_clk_register_pll_out(const char *name, 519 const char *parent_name, void __iomem *reg, u8 enb_bit_idx, 520 u8 rst_bit_idx, unsigned long flags, u8 pll_div_flags, 521 spinlock_t *lock); 522 523 /** 524 * struct tegra_clk_periph_regs - Registers controlling peripheral clock 525 * 526 * @enb_reg: read the enable status 527 * @enb_set_reg: write 1 to enable clock 528 * @enb_clr_reg: write 1 to disable clock 529 * @rst_reg: read the reset status 530 * @rst_set_reg: write 1 to assert the reset of peripheral 531 * @rst_clr_reg: write 1 to deassert the reset of peripheral 532 */ 533 struct tegra_clk_periph_regs { 534 u32 enb_reg; 535 u32 enb_set_reg; 536 u32 enb_clr_reg; 537 u32 rst_reg; 538 u32 rst_set_reg; 539 u32 rst_clr_reg; 540 }; 541 542 /** 543 * struct tegra_clk_periph_gate - peripheral gate clock 544 * 545 * @magic: magic number to validate type 546 * @hw: handle between common and hardware-specific interfaces 547 * @clk_base: address of CAR controller 548 * @regs: Registers to control the peripheral 549 * @flags: hardware-specific flags 550 * @clk_num: Clock number 551 * @enable_refcnt: array to maintain reference count of the clock 552 * 553 * Flags: 554 * TEGRA_PERIPH_NO_RESET - This flag indicates that reset is not allowed 555 * for this module. 556 * TEGRA_PERIPH_ON_APB - If peripheral is in the APB bus then read the 557 * bus to flush the write operation in apb bus. This flag indicates 558 * that this peripheral is in apb bus. 559 * TEGRA_PERIPH_WAR_1005168 - Apply workaround for Tegra114 MSENC bug 560 */ 561 struct tegra_clk_periph_gate { 562 u32 magic; 563 struct clk_hw hw; 564 void __iomem *clk_base; 565 u8 flags; 566 int clk_num; 567 int *enable_refcnt; 568 const struct tegra_clk_periph_regs *regs; 569 }; 570 571 #define to_clk_periph_gate(_hw) \ 572 container_of(_hw, struct tegra_clk_periph_gate, hw) 573 574 #define TEGRA_CLK_PERIPH_GATE_MAGIC 0x17760309 575 576 #define TEGRA_PERIPH_NO_RESET BIT(0) 577 #define TEGRA_PERIPH_ON_APB BIT(2) 578 #define TEGRA_PERIPH_WAR_1005168 BIT(3) 579 #define TEGRA_PERIPH_NO_DIV BIT(4) 580 #define TEGRA_PERIPH_NO_GATE BIT(5) 581 582 extern const struct clk_ops tegra_clk_periph_gate_ops; 583 struct clk *tegra_clk_register_periph_gate(const char *name, 584 const char *parent_name, u8 gate_flags, void __iomem *clk_base, 585 unsigned long flags, int clk_num, int *enable_refcnt); 586 587 struct tegra_clk_periph_fixed { 588 struct clk_hw hw; 589 void __iomem *base; 590 const struct tegra_clk_periph_regs *regs; 591 unsigned int mul; 592 unsigned int div; 593 unsigned int num; 594 }; 595 596 struct clk *tegra_clk_register_periph_fixed(const char *name, 597 const char *parent, 598 unsigned long flags, 599 void __iomem *base, 600 unsigned int mul, 601 unsigned int div, 602 unsigned int num); 603 604 /** 605 * struct clk-periph - peripheral clock 606 * 607 * @magic: magic number to validate type 608 * @hw: handle between common and hardware-specific interfaces 609 * @mux: mux clock 610 * @divider: divider clock 611 * @gate: gate clock 612 * @mux_ops: mux clock ops 613 * @div_ops: divider clock ops 614 * @gate_ops: gate clock ops 615 */ 616 struct tegra_clk_periph { 617 u32 magic; 618 struct clk_hw hw; 619 struct clk_mux mux; 620 struct tegra_clk_frac_div divider; 621 struct tegra_clk_periph_gate gate; 622 623 const struct clk_ops *mux_ops; 624 const struct clk_ops *div_ops; 625 const struct clk_ops *gate_ops; 626 }; 627 628 #define to_clk_periph(_hw) container_of(_hw, struct tegra_clk_periph, hw) 629 630 #define TEGRA_CLK_PERIPH_MAGIC 0x18221223 631 632 extern const struct clk_ops tegra_clk_periph_ops; 633 struct clk *tegra_clk_register_periph(const char *name, 634 const char * const *parent_names, int num_parents, 635 struct tegra_clk_periph *periph, void __iomem *clk_base, 636 u32 offset, unsigned long flags); 637 struct clk *tegra_clk_register_periph_nodiv(const char *name, 638 const char * const *parent_names, int num_parents, 639 struct tegra_clk_periph *periph, void __iomem *clk_base, 640 u32 offset); 641 642 #define TEGRA_CLK_PERIPH(_mux_shift, _mux_mask, _mux_flags, \ 643 _div_shift, _div_width, _div_frac_width, \ 644 _div_flags, _clk_num,\ 645 _gate_flags, _table, _lock) \ 646 { \ 647 .mux = { \ 648 .flags = _mux_flags, \ 649 .shift = _mux_shift, \ 650 .mask = _mux_mask, \ 651 .table = _table, \ 652 .lock = _lock, \ 653 }, \ 654 .divider = { \ 655 .flags = _div_flags, \ 656 .shift = _div_shift, \ 657 .width = _div_width, \ 658 .frac_width = _div_frac_width, \ 659 .lock = _lock, \ 660 }, \ 661 .gate = { \ 662 .flags = _gate_flags, \ 663 .clk_num = _clk_num, \ 664 }, \ 665 .mux_ops = &clk_mux_ops, \ 666 .div_ops = &tegra_clk_frac_div_ops, \ 667 .gate_ops = &tegra_clk_periph_gate_ops, \ 668 } 669 670 struct tegra_periph_init_data { 671 const char *name; 672 int clk_id; 673 union { 674 const char *const *parent_names; 675 const char *parent_name; 676 } p; 677 int num_parents; 678 struct tegra_clk_periph periph; 679 u32 offset; 680 const char *con_id; 681 const char *dev_id; 682 unsigned long flags; 683 }; 684 685 #define TEGRA_INIT_DATA_TABLE(_name, _con_id, _dev_id, _parent_names, _offset,\ 686 _mux_shift, _mux_mask, _mux_flags, _div_shift, \ 687 _div_width, _div_frac_width, _div_flags, \ 688 _clk_num, _gate_flags, _clk_id, _table, \ 689 _flags, _lock) \ 690 { \ 691 .name = _name, \ 692 .clk_id = _clk_id, \ 693 .p.parent_names = _parent_names, \ 694 .num_parents = ARRAY_SIZE(_parent_names), \ 695 .periph = TEGRA_CLK_PERIPH(_mux_shift, _mux_mask, \ 696 _mux_flags, _div_shift, \ 697 _div_width, _div_frac_width, \ 698 _div_flags, _clk_num, \ 699 _gate_flags, _table, _lock), \ 700 .offset = _offset, \ 701 .con_id = _con_id, \ 702 .dev_id = _dev_id, \ 703 .flags = _flags \ 704 } 705 706 #define TEGRA_INIT_DATA(_name, _con_id, _dev_id, _parent_names, _offset,\ 707 _mux_shift, _mux_width, _mux_flags, _div_shift, \ 708 _div_width, _div_frac_width, _div_flags, \ 709 _clk_num, _gate_flags, _clk_id) \ 710 TEGRA_INIT_DATA_TABLE(_name, _con_id, _dev_id, _parent_names, _offset,\ 711 _mux_shift, BIT(_mux_width) - 1, _mux_flags, \ 712 _div_shift, _div_width, _div_frac_width, _div_flags, \ 713 _clk_num, _gate_flags, _clk_id,\ 714 NULL, 0, NULL) 715 716 struct clk *tegra_clk_register_periph_data(void __iomem *clk_base, 717 struct tegra_periph_init_data *init); 718 719 /** 720 * struct clk_super_mux - super clock 721 * 722 * @hw: handle between common and hardware-specific interfaces 723 * @reg: register controlling multiplexer 724 * @width: width of the multiplexer bit field 725 * @flags: hardware-specific flags 726 * @div2_index: bit controlling divide-by-2 727 * @pllx_index: PLLX index in the parent list 728 * @lock: register lock 729 * 730 * Flags: 731 * TEGRA_DIVIDER_2 - LP cluster has additional divider. This flag indicates 732 * that this is LP cluster clock. 733 * TEGRA210_CPU_CLK - This flag is used to identify CPU cluster for gen5 734 * super mux parent using PLLP branches. To use PLLP branches to CPU, need 735 * to configure additional bit PLLP_OUT_CPU in the clock registers. 736 * TEGRA20_SUPER_CLK - Tegra20 doesn't have a dedicated divider for Super 737 * clocks, it only has a clock-skipper. 738 */ 739 struct tegra_clk_super_mux { 740 struct clk_hw hw; 741 void __iomem *reg; 742 struct tegra_clk_frac_div frac_div; 743 const struct clk_ops *div_ops; 744 u8 width; 745 u8 flags; 746 u8 div2_index; 747 u8 pllx_index; 748 spinlock_t *lock; 749 }; 750 751 #define to_clk_super_mux(_hw) container_of(_hw, struct tegra_clk_super_mux, hw) 752 753 #define TEGRA_DIVIDER_2 BIT(0) 754 #define TEGRA210_CPU_CLK BIT(1) 755 #define TEGRA20_SUPER_CLK BIT(2) 756 757 extern const struct clk_ops tegra_clk_super_ops; 758 struct clk *tegra_clk_register_super_mux(const char *name, 759 const char **parent_names, u8 num_parents, 760 unsigned long flags, void __iomem *reg, u8 clk_super_flags, 761 u8 width, u8 pllx_index, u8 div2_index, spinlock_t *lock); 762 struct clk *tegra_clk_register_super_clk(const char *name, 763 const char * const *parent_names, u8 num_parents, 764 unsigned long flags, void __iomem *reg, u8 clk_super_flags, 765 spinlock_t *lock); 766 struct clk *tegra_clk_register_super_cclk(const char *name, 767 const char * const *parent_names, u8 num_parents, 768 unsigned long flags, void __iomem *reg, u8 clk_super_flags, 769 spinlock_t *lock); 770 int tegra_cclk_pre_pllx_rate_change(void); 771 void tegra_cclk_post_pllx_rate_change(void); 772 773 /** 774 * struct tegra_sdmmc_mux - switch divider with Low Jitter inputs for SDMMC 775 * 776 * @hw: handle between common and hardware-specific interfaces 777 * @reg: register controlling mux and divider 778 * @flags: hardware-specific flags 779 * @lock: optional register lock 780 * @gate: gate clock 781 * @gate_ops: gate clock ops 782 */ 783 struct tegra_sdmmc_mux { 784 struct clk_hw hw; 785 void __iomem *reg; 786 spinlock_t *lock; 787 const struct clk_ops *gate_ops; 788 struct tegra_clk_periph_gate gate; 789 u8 div_flags; 790 }; 791 792 #define to_clk_sdmmc_mux(_hw) container_of(_hw, struct tegra_sdmmc_mux, hw) 793 794 struct clk *tegra_clk_register_sdmmc_mux_div(const char *name, 795 void __iomem *clk_base, u32 offset, u32 clk_num, u8 div_flags, 796 unsigned long flags, void *lock); 797 798 /** 799 * struct clk_init_table - clock initialization table 800 * @clk_id: clock id as mentioned in device tree bindings 801 * @parent_id: parent clock id as mentioned in device tree bindings 802 * @rate: rate to set 803 * @state: enable/disable 804 */ 805 struct tegra_clk_init_table { 806 unsigned int clk_id; 807 unsigned int parent_id; 808 unsigned long rate; 809 int state; 810 }; 811 812 /** 813 * struct clk_duplicate - duplicate clocks 814 * @clk_id: clock id as mentioned in device tree bindings 815 * @lookup: duplicate lookup entry for the clock 816 */ 817 struct tegra_clk_duplicate { 818 int clk_id; 819 struct clk_lookup lookup; 820 }; 821 822 #define TEGRA_CLK_DUPLICATE(_clk_id, _dev, _con) \ 823 { \ 824 .clk_id = _clk_id, \ 825 .lookup = { \ 826 .dev_id = _dev, \ 827 .con_id = _con, \ 828 }, \ 829 } 830 831 struct tegra_clk { 832 int dt_id; 833 bool present; 834 }; 835 836 struct tegra_devclk { 837 int dt_id; 838 char *dev_id; 839 char *con_id; 840 }; 841 842 void tegra_init_special_resets(unsigned int num, int (*assert)(unsigned long), 843 int (*deassert)(unsigned long)); 844 845 void tegra_init_from_table(struct tegra_clk_init_table *tbl, 846 struct clk *clks[], int clk_max); 847 848 void tegra_init_dup_clks(struct tegra_clk_duplicate *dup_list, 849 struct clk *clks[], int clk_max); 850 851 const struct tegra_clk_periph_regs *get_reg_bank(int clkid); 852 struct clk **tegra_clk_init(void __iomem *clk_base, int num, int periph_banks); 853 854 struct clk **tegra_lookup_dt_id(int clk_id, struct tegra_clk *tegra_clk); 855 856 void tegra_add_of_provider(struct device_node *np, void *clk_src_onecell_get); 857 void tegra_register_devclks(struct tegra_devclk *dev_clks, int num); 858 859 void tegra_audio_clk_init(void __iomem *clk_base, 860 void __iomem *pmc_base, struct tegra_clk *tegra_clks, 861 struct tegra_audio_clk_info *audio_info, 862 unsigned int num_plls, unsigned long sync_max_rate); 863 864 void tegra_periph_clk_init(void __iomem *clk_base, void __iomem *pmc_base, 865 struct tegra_clk *tegra_clks, 866 struct tegra_clk_pll_params *pll_params); 867 868 void tegra_fixed_clk_init(struct tegra_clk *tegra_clks); 869 int tegra_osc_clk_init(void __iomem *clk_base, struct tegra_clk *clks, 870 unsigned long *input_freqs, unsigned int num, 871 unsigned int clk_m_div, unsigned long *osc_freq, 872 unsigned long *pll_ref_freq); 873 void tegra_super_clk_gen4_init(void __iomem *clk_base, 874 void __iomem *pmc_base, struct tegra_clk *tegra_clks, 875 struct tegra_clk_pll_params *pll_params); 876 void tegra_super_clk_gen5_init(void __iomem *clk_base, 877 void __iomem *pmc_base, struct tegra_clk *tegra_clks, 878 struct tegra_clk_pll_params *pll_params); 879 880 #ifdef CONFIG_TEGRA124_CLK_EMC 881 struct clk *tegra124_clk_register_emc(void __iomem *base, struct device_node *np, 882 spinlock_t *lock); 883 bool tegra124_clk_emc_driver_available(struct clk_hw *emc_hw); 884 #else 885 static inline struct clk * tegra124_clk_register_emc(void __iomem * base,struct device_node * np,spinlock_t * lock)886 tegra124_clk_register_emc(void __iomem *base, struct device_node *np, 887 spinlock_t *lock) 888 { 889 return NULL; 890 } 891 tegra124_clk_emc_driver_available(struct clk_hw * emc_hw)892 static inline bool tegra124_clk_emc_driver_available(struct clk_hw *emc_hw) 893 { 894 return false; 895 } 896 #endif 897 898 void tegra114_clock_tune_cpu_trimmers_high(void); 899 void tegra114_clock_tune_cpu_trimmers_low(void); 900 void tegra114_clock_tune_cpu_trimmers_init(void); 901 void tegra114_clock_assert_dfll_dvco_reset(void); 902 void tegra114_clock_deassert_dfll_dvco_reset(void); 903 904 typedef void (*tegra_clk_apply_init_table_func)(void); 905 extern tegra_clk_apply_init_table_func tegra_clk_apply_init_table; 906 int tegra_pll_wait_for_lock(struct tegra_clk_pll *pll); 907 u16 tegra_pll_get_fixed_mdiv(struct clk_hw *hw, unsigned long input_rate); 908 int tegra_pll_p_div_to_hw(struct tegra_clk_pll *pll, u8 p_div); 909 int div_frac_get(unsigned long rate, unsigned parent_rate, u8 width, 910 u8 frac_width, u8 flags); 911 void tegra_clk_osc_resume(void __iomem *clk_base); 912 void tegra_clk_set_pllp_out_cpu(bool enable); 913 void tegra_clk_periph_suspend(void); 914 void tegra_clk_periph_resume(void); 915 916 917 /* Combined read fence with delay */ 918 #define fence_udelay(delay, reg) \ 919 do { \ 920 readl(reg); \ 921 udelay(delay); \ 922 } while (0) 923 924 bool tegra20_clk_emc_driver_available(struct clk_hw *emc_hw); 925 struct clk *tegra20_clk_register_emc(void __iomem *ioaddr, bool low_jitter); 926 927 struct clk *tegra210_clk_register_emc(struct device_node *np, 928 void __iomem *regs); 929 930 struct clk *tegra_clk_dev_register(struct clk_hw *hw); 931 932 #endif /* TEGRA_CLK_H */ 933