clk-tegra20.c revision d076a206b2dfa8ef7a735289fe1221e77d1fa83f
1/* 2 * Copyright (c) 2012, NVIDIA CORPORATION. All rights reserved. 3 * 4 * This program is free software; you can redistribute it and/or modify it 5 * under the terms and conditions of the GNU General Public License, 6 * version 2, as published by the Free Software Foundation. 7 * 8 * This program is distributed in the hope it will be useful, but WITHOUT 9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 11 * more details. 12 * 13 * You should have received a copy of the GNU General Public License 14 * along with this program. If not, see <http://www.gnu.org/licenses/>. 15 */ 16 17#include <linux/io.h> 18#include <linux/clk.h> 19#include <linux/clk-provider.h> 20#include <linux/clkdev.h> 21#include <linux/of.h> 22#include <linux/of_address.h> 23#include <linux/clk/tegra.h> 24#include <linux/delay.h> 25 26#include "clk.h" 27 28#define RST_DEVICES_L 0x004 29#define RST_DEVICES_H 0x008 30#define RST_DEVICES_U 0x00c 31#define RST_DEVICES_SET_L 0x300 32#define RST_DEVICES_CLR_L 0x304 33#define RST_DEVICES_SET_H 0x308 34#define RST_DEVICES_CLR_H 0x30c 35#define RST_DEVICES_SET_U 0x310 36#define RST_DEVICES_CLR_U 0x314 37#define RST_DEVICES_NUM 3 38 39#define CLK_OUT_ENB_L 0x010 40#define CLK_OUT_ENB_H 0x014 41#define CLK_OUT_ENB_U 0x018 42#define CLK_OUT_ENB_SET_L 0x320 43#define CLK_OUT_ENB_CLR_L 0x324 44#define CLK_OUT_ENB_SET_H 0x328 45#define CLK_OUT_ENB_CLR_H 0x32c 46#define CLK_OUT_ENB_SET_U 0x330 47#define CLK_OUT_ENB_CLR_U 0x334 48#define CLK_OUT_ENB_NUM 3 49 50#define OSC_CTRL 0x50 51#define OSC_CTRL_OSC_FREQ_MASK (3<<30) 52#define OSC_CTRL_OSC_FREQ_13MHZ (0<<30) 53#define OSC_CTRL_OSC_FREQ_19_2MHZ (1<<30) 54#define OSC_CTRL_OSC_FREQ_12MHZ (2<<30) 55#define OSC_CTRL_OSC_FREQ_26MHZ (3<<30) 56#define OSC_CTRL_MASK (0x3f2 | OSC_CTRL_OSC_FREQ_MASK) 57 58#define OSC_CTRL_PLL_REF_DIV_MASK (3<<28) 59#define OSC_CTRL_PLL_REF_DIV_1 (0<<28) 60#define OSC_CTRL_PLL_REF_DIV_2 (1<<28) 61#define OSC_CTRL_PLL_REF_DIV_4 (2<<28) 62 63#define OSC_FREQ_DET 0x58 64#define OSC_FREQ_DET_TRIG (1<<31) 65 66#define OSC_FREQ_DET_STATUS 0x5c 67#define OSC_FREQ_DET_BUSY (1<<31) 68#define OSC_FREQ_DET_CNT_MASK 0xFFFF 69 70#define PLLS_BASE 0xf0 71#define PLLS_MISC 0xf4 72#define PLLC_BASE 0x80 73#define PLLC_MISC 0x8c 74#define PLLM_BASE 0x90 75#define PLLM_MISC 0x9c 76#define PLLP_BASE 0xa0 77#define PLLP_MISC 0xac 78#define PLLA_BASE 0xb0 79#define PLLA_MISC 0xbc 80#define PLLU_BASE 0xc0 81#define PLLU_MISC 0xcc 82#define PLLD_BASE 0xd0 83#define PLLD_MISC 0xdc 84#define PLLX_BASE 0xe0 85#define PLLX_MISC 0xe4 86#define PLLE_BASE 0xe8 87#define PLLE_MISC 0xec 88 89#define PLL_BASE_LOCK 27 90#define PLLE_MISC_LOCK 11 91 92#define PLL_MISC_LOCK_ENABLE 18 93#define PLLDU_MISC_LOCK_ENABLE 22 94#define PLLE_MISC_LOCK_ENABLE 9 95 96#define PLLC_OUT 0x84 97#define PLLM_OUT 0x94 98#define PLLP_OUTA 0xa4 99#define PLLP_OUTB 0xa8 100#define PLLA_OUT 0xb4 101 102#define CCLK_BURST_POLICY 0x20 103#define SUPER_CCLK_DIVIDER 0x24 104#define SCLK_BURST_POLICY 0x28 105#define SUPER_SCLK_DIVIDER 0x2c 106#define CLK_SYSTEM_RATE 0x30 107 108#define CCLK_BURST_POLICY_SHIFT 28 109#define CCLK_RUN_POLICY_SHIFT 4 110#define CCLK_IDLE_POLICY_SHIFT 0 111#define CCLK_IDLE_POLICY 1 112#define CCLK_RUN_POLICY 2 113#define CCLK_BURST_POLICY_PLLX 8 114 115#define CLK_SOURCE_I2S1 0x100 116#define CLK_SOURCE_I2S2 0x104 117#define CLK_SOURCE_SPDIF_OUT 0x108 118#define CLK_SOURCE_SPDIF_IN 0x10c 119#define CLK_SOURCE_PWM 0x110 120#define CLK_SOURCE_SPI 0x114 121#define CLK_SOURCE_SBC1 0x134 122#define CLK_SOURCE_SBC2 0x118 123#define CLK_SOURCE_SBC3 0x11c 124#define CLK_SOURCE_SBC4 0x1b4 125#define CLK_SOURCE_XIO 0x120 126#define CLK_SOURCE_TWC 0x12c 127#define CLK_SOURCE_IDE 0x144 128#define CLK_SOURCE_NDFLASH 0x160 129#define CLK_SOURCE_VFIR 0x168 130#define CLK_SOURCE_SDMMC1 0x150 131#define CLK_SOURCE_SDMMC2 0x154 132#define CLK_SOURCE_SDMMC3 0x1bc 133#define CLK_SOURCE_SDMMC4 0x164 134#define CLK_SOURCE_CVE 0x140 135#define CLK_SOURCE_TVO 0x188 136#define CLK_SOURCE_TVDAC 0x194 137#define CLK_SOURCE_HDMI 0x18c 138#define CLK_SOURCE_DISP1 0x138 139#define CLK_SOURCE_DISP2 0x13c 140#define CLK_SOURCE_CSITE 0x1d4 141#define CLK_SOURCE_LA 0x1f8 142#define CLK_SOURCE_OWR 0x1cc 143#define CLK_SOURCE_NOR 0x1d0 144#define CLK_SOURCE_MIPI 0x174 145#define CLK_SOURCE_I2C1 0x124 146#define CLK_SOURCE_I2C2 0x198 147#define CLK_SOURCE_I2C3 0x1b8 148#define CLK_SOURCE_DVC 0x128 149#define CLK_SOURCE_UARTA 0x178 150#define CLK_SOURCE_UARTB 0x17c 151#define CLK_SOURCE_UARTC 0x1a0 152#define CLK_SOURCE_UARTD 0x1c0 153#define CLK_SOURCE_UARTE 0x1c4 154#define CLK_SOURCE_3D 0x158 155#define CLK_SOURCE_2D 0x15c 156#define CLK_SOURCE_MPE 0x170 157#define CLK_SOURCE_EPP 0x16c 158#define CLK_SOURCE_HOST1X 0x180 159#define CLK_SOURCE_VDE 0x1c8 160#define CLK_SOURCE_VI 0x148 161#define CLK_SOURCE_VI_SENSOR 0x1a8 162#define CLK_SOURCE_EMC 0x19c 163 164#define AUDIO_SYNC_CLK 0x38 165 166#define PMC_CTRL 0x0 167#define PMC_CTRL_BLINK_ENB 7 168#define PMC_DPD_PADS_ORIDE 0x1c 169#define PMC_DPD_PADS_ORIDE_BLINK_ENB 20 170#define PMC_BLINK_TIMER 0x40 171 172/* Tegra CPU clock and reset control regs */ 173#define TEGRA_CLK_RST_CONTROLLER_CLK_CPU_CMPLX 0x4c 174#define TEGRA_CLK_RST_CONTROLLER_RST_CPU_CMPLX_SET 0x340 175#define TEGRA_CLK_RST_CONTROLLER_RST_CPU_CMPLX_CLR 0x344 176 177#define CPU_CLOCK(cpu) (0x1 << (8 + cpu)) 178#define CPU_RESET(cpu) (0x1111ul << (cpu)) 179 180#ifdef CONFIG_PM_SLEEP 181static struct cpu_clk_suspend_context { 182 u32 pllx_misc; 183 u32 pllx_base; 184 185 u32 cpu_burst; 186 u32 clk_csite_src; 187 u32 cclk_divider; 188} tegra20_cpu_clk_sctx; 189#endif 190 191static int periph_clk_enb_refcnt[CLK_OUT_ENB_NUM * 32]; 192 193static void __iomem *clk_base; 194static void __iomem *pmc_base; 195 196static DEFINE_SPINLOCK(pll_div_lock); 197static DEFINE_SPINLOCK(sysrate_lock); 198 199#define TEGRA_INIT_DATA_MUX(_name, _con_id, _dev_id, _parents, _offset, \ 200 _clk_num, _regs, _gate_flags, _clk_id) \ 201 TEGRA_INIT_DATA(_name, _con_id, _dev_id, _parents, _offset, \ 202 30, 2, 0, 0, 8, 1, TEGRA_DIVIDER_ROUND_UP, \ 203 _regs, _clk_num, periph_clk_enb_refcnt, \ 204 _gate_flags, _clk_id) 205 206#define TEGRA_INIT_DATA_INT(_name, _con_id, _dev_id, _parents, _offset, \ 207 _clk_num, _regs, _gate_flags, _clk_id) \ 208 TEGRA_INIT_DATA(_name, _con_id, _dev_id, _parents, _offset, \ 209 30, 2, 0, 0, 8, 1, TEGRA_DIVIDER_INT, _regs, \ 210 _clk_num, periph_clk_enb_refcnt, _gate_flags, \ 211 _clk_id) 212 213#define TEGRA_INIT_DATA_DIV16(_name, _con_id, _dev_id, _parents, _offset, \ 214 _clk_num, _regs, _gate_flags, _clk_id) \ 215 TEGRA_INIT_DATA(_name, _con_id, _dev_id, _parents, _offset, \ 216 30, 2, 0, 0, 16, 0, TEGRA_DIVIDER_ROUND_UP, _regs, \ 217 _clk_num, periph_clk_enb_refcnt, _gate_flags, \ 218 _clk_id) 219 220#define TEGRA_INIT_DATA_NODIV(_name, _con_id, _dev_id, _parents, _offset, \ 221 _mux_shift, _mux_width, _clk_num, _regs, \ 222 _gate_flags, _clk_id) \ 223 TEGRA_INIT_DATA(_name, _con_id, _dev_id, _parents, _offset, \ 224 _mux_shift, _mux_width, 0, 0, 0, 0, 0, _regs, \ 225 _clk_num, periph_clk_enb_refcnt, _gate_flags, \ 226 _clk_id) 227 228/* IDs assigned here must be in sync with DT bindings definition 229 * for Tegra20 clocks . 230 */ 231enum tegra20_clk { 232 cpu, ac97 = 3, rtc, timer, uarta, gpio = 8, sdmmc2, i2s1 = 11, i2c1, 233 ndflash, sdmmc1, sdmmc4, twc, pwm, i2s2, epp, gr2d = 21, usbd, isp, 234 gr3d, ide, disp2, disp1, host1x, vcp, cache2 = 31, mem, ahbdma, apbdma, 235 kbc = 36, stat_mon, pmc, fuse, kfuse, sbc1, nor, spi, sbc2, xio, sbc3, 236 dvc, dsi, mipi = 50, hdmi, csi, tvdac, i2c2, uartc, emc = 57, usb2, 237 usb3, mpe, vde, bsea, bsev, speedo, uartd, uarte, i2c3, sbc4, sdmmc3, 238 pex, owr, afi, csite, pcie_xclk, avpucq = 75, la, irama = 84, iramb, 239 iramc, iramd, cram2, audio_2x, clk_d, csus = 92, cdev1, cdev2, 240 uartb = 96, vfir, spdif_in, spdif_out, vi, vi_sensor, tvo, cve, 241 osc, clk_32k, clk_m, sclk, cclk, hclk, pclk, blink, pll_a, pll_a_out0, 242 pll_c, pll_c_out1, pll_d, pll_d_out0, pll_e, pll_m, pll_m_out1, 243 pll_p, pll_p_out1, pll_p_out2, pll_p_out3, pll_p_out4, pll_u, 244 pll_x, audio, pll_ref, twd, clk_max, 245}; 246 247static struct clk *clks[clk_max]; 248static struct clk_onecell_data clk_data; 249 250static struct tegra_clk_pll_freq_table pll_c_freq_table[] = { 251 { 12000000, 600000000, 600, 12, 1, 8 }, 252 { 13000000, 600000000, 600, 13, 1, 8 }, 253 { 19200000, 600000000, 500, 16, 1, 6 }, 254 { 26000000, 600000000, 600, 26, 1, 8 }, 255 { 0, 0, 0, 0, 0, 0 }, 256}; 257 258static struct tegra_clk_pll_freq_table pll_m_freq_table[] = { 259 { 12000000, 666000000, 666, 12, 1, 8}, 260 { 13000000, 666000000, 666, 13, 1, 8}, 261 { 19200000, 666000000, 555, 16, 1, 8}, 262 { 26000000, 666000000, 666, 26, 1, 8}, 263 { 12000000, 600000000, 600, 12, 1, 8}, 264 { 13000000, 600000000, 600, 13, 1, 8}, 265 { 19200000, 600000000, 375, 12, 1, 6}, 266 { 26000000, 600000000, 600, 26, 1, 8}, 267 { 0, 0, 0, 0, 0, 0 }, 268}; 269 270static struct tegra_clk_pll_freq_table pll_p_freq_table[] = { 271 { 12000000, 216000000, 432, 12, 2, 8}, 272 { 13000000, 216000000, 432, 13, 2, 8}, 273 { 19200000, 216000000, 90, 4, 2, 1}, 274 { 26000000, 216000000, 432, 26, 2, 8}, 275 { 12000000, 432000000, 432, 12, 1, 8}, 276 { 13000000, 432000000, 432, 13, 1, 8}, 277 { 19200000, 432000000, 90, 4, 1, 1}, 278 { 26000000, 432000000, 432, 26, 1, 8}, 279 { 0, 0, 0, 0, 0, 0 }, 280}; 281 282static struct tegra_clk_pll_freq_table pll_a_freq_table[] = { 283 { 28800000, 56448000, 49, 25, 1, 1}, 284 { 28800000, 73728000, 64, 25, 1, 1}, 285 { 28800000, 24000000, 5, 6, 1, 1}, 286 { 0, 0, 0, 0, 0, 0 }, 287}; 288 289static struct tegra_clk_pll_freq_table pll_d_freq_table[] = { 290 { 12000000, 216000000, 216, 12, 1, 4}, 291 { 13000000, 216000000, 216, 13, 1, 4}, 292 { 19200000, 216000000, 135, 12, 1, 3}, 293 { 26000000, 216000000, 216, 26, 1, 4}, 294 295 { 12000000, 594000000, 594, 12, 1, 8}, 296 { 13000000, 594000000, 594, 13, 1, 8}, 297 { 19200000, 594000000, 495, 16, 1, 8}, 298 { 26000000, 594000000, 594, 26, 1, 8}, 299 300 { 12000000, 1000000000, 1000, 12, 1, 12}, 301 { 13000000, 1000000000, 1000, 13, 1, 12}, 302 { 19200000, 1000000000, 625, 12, 1, 8}, 303 { 26000000, 1000000000, 1000, 26, 1, 12}, 304 305 { 0, 0, 0, 0, 0, 0 }, 306}; 307 308static struct tegra_clk_pll_freq_table pll_u_freq_table[] = { 309 { 12000000, 480000000, 960, 12, 2, 0}, 310 { 13000000, 480000000, 960, 13, 2, 0}, 311 { 19200000, 480000000, 200, 4, 2, 0}, 312 { 26000000, 480000000, 960, 26, 2, 0}, 313 { 0, 0, 0, 0, 0, 0 }, 314}; 315 316static struct tegra_clk_pll_freq_table pll_x_freq_table[] = { 317 /* 1 GHz */ 318 { 12000000, 1000000000, 1000, 12, 1, 12}, 319 { 13000000, 1000000000, 1000, 13, 1, 12}, 320 { 19200000, 1000000000, 625, 12, 1, 8}, 321 { 26000000, 1000000000, 1000, 26, 1, 12}, 322 323 /* 912 MHz */ 324 { 12000000, 912000000, 912, 12, 1, 12}, 325 { 13000000, 912000000, 912, 13, 1, 12}, 326 { 19200000, 912000000, 760, 16, 1, 8}, 327 { 26000000, 912000000, 912, 26, 1, 12}, 328 329 /* 816 MHz */ 330 { 12000000, 816000000, 816, 12, 1, 12}, 331 { 13000000, 816000000, 816, 13, 1, 12}, 332 { 19200000, 816000000, 680, 16, 1, 8}, 333 { 26000000, 816000000, 816, 26, 1, 12}, 334 335 /* 760 MHz */ 336 { 12000000, 760000000, 760, 12, 1, 12}, 337 { 13000000, 760000000, 760, 13, 1, 12}, 338 { 19200000, 760000000, 950, 24, 1, 8}, 339 { 26000000, 760000000, 760, 26, 1, 12}, 340 341 /* 750 MHz */ 342 { 12000000, 750000000, 750, 12, 1, 12}, 343 { 13000000, 750000000, 750, 13, 1, 12}, 344 { 19200000, 750000000, 625, 16, 1, 8}, 345 { 26000000, 750000000, 750, 26, 1, 12}, 346 347 /* 608 MHz */ 348 { 12000000, 608000000, 608, 12, 1, 12}, 349 { 13000000, 608000000, 608, 13, 1, 12}, 350 { 19200000, 608000000, 380, 12, 1, 8}, 351 { 26000000, 608000000, 608, 26, 1, 12}, 352 353 /* 456 MHz */ 354 { 12000000, 456000000, 456, 12, 1, 12}, 355 { 13000000, 456000000, 456, 13, 1, 12}, 356 { 19200000, 456000000, 380, 16, 1, 8}, 357 { 26000000, 456000000, 456, 26, 1, 12}, 358 359 /* 312 MHz */ 360 { 12000000, 312000000, 312, 12, 1, 12}, 361 { 13000000, 312000000, 312, 13, 1, 12}, 362 { 19200000, 312000000, 260, 16, 1, 8}, 363 { 26000000, 312000000, 312, 26, 1, 12}, 364 365 { 0, 0, 0, 0, 0, 0 }, 366}; 367 368static struct tegra_clk_pll_freq_table pll_e_freq_table[] = { 369 { 12000000, 100000000, 200, 24, 1, 0 }, 370 { 0, 0, 0, 0, 0, 0 }, 371}; 372 373/* PLL parameters */ 374static struct tegra_clk_pll_params pll_c_params = { 375 .input_min = 2000000, 376 .input_max = 31000000, 377 .cf_min = 1000000, 378 .cf_max = 6000000, 379 .vco_min = 20000000, 380 .vco_max = 1400000000, 381 .base_reg = PLLC_BASE, 382 .misc_reg = PLLC_MISC, 383 .lock_bit_idx = PLL_BASE_LOCK, 384 .lock_enable_bit_idx = PLL_MISC_LOCK_ENABLE, 385 .lock_delay = 300, 386}; 387 388static struct tegra_clk_pll_params pll_m_params = { 389 .input_min = 2000000, 390 .input_max = 31000000, 391 .cf_min = 1000000, 392 .cf_max = 6000000, 393 .vco_min = 20000000, 394 .vco_max = 1200000000, 395 .base_reg = PLLM_BASE, 396 .misc_reg = PLLM_MISC, 397 .lock_bit_idx = PLL_BASE_LOCK, 398 .lock_enable_bit_idx = PLL_MISC_LOCK_ENABLE, 399 .lock_delay = 300, 400}; 401 402static struct tegra_clk_pll_params pll_p_params = { 403 .input_min = 2000000, 404 .input_max = 31000000, 405 .cf_min = 1000000, 406 .cf_max = 6000000, 407 .vco_min = 20000000, 408 .vco_max = 1400000000, 409 .base_reg = PLLP_BASE, 410 .misc_reg = PLLP_MISC, 411 .lock_bit_idx = PLL_BASE_LOCK, 412 .lock_enable_bit_idx = PLL_MISC_LOCK_ENABLE, 413 .lock_delay = 300, 414}; 415 416static struct tegra_clk_pll_params pll_a_params = { 417 .input_min = 2000000, 418 .input_max = 31000000, 419 .cf_min = 1000000, 420 .cf_max = 6000000, 421 .vco_min = 20000000, 422 .vco_max = 1400000000, 423 .base_reg = PLLA_BASE, 424 .misc_reg = PLLA_MISC, 425 .lock_bit_idx = PLL_BASE_LOCK, 426 .lock_enable_bit_idx = PLL_MISC_LOCK_ENABLE, 427 .lock_delay = 300, 428}; 429 430static struct tegra_clk_pll_params pll_d_params = { 431 .input_min = 2000000, 432 .input_max = 40000000, 433 .cf_min = 1000000, 434 .cf_max = 6000000, 435 .vco_min = 40000000, 436 .vco_max = 1000000000, 437 .base_reg = PLLD_BASE, 438 .misc_reg = PLLD_MISC, 439 .lock_bit_idx = PLL_BASE_LOCK, 440 .lock_enable_bit_idx = PLLDU_MISC_LOCK_ENABLE, 441 .lock_delay = 1000, 442}; 443 444static struct tegra_clk_pll_params pll_u_params = { 445 .input_min = 2000000, 446 .input_max = 40000000, 447 .cf_min = 1000000, 448 .cf_max = 6000000, 449 .vco_min = 48000000, 450 .vco_max = 960000000, 451 .base_reg = PLLU_BASE, 452 .misc_reg = PLLU_MISC, 453 .lock_bit_idx = PLL_BASE_LOCK, 454 .lock_enable_bit_idx = PLLDU_MISC_LOCK_ENABLE, 455 .lock_delay = 1000, 456}; 457 458static struct tegra_clk_pll_params pll_x_params = { 459 .input_min = 2000000, 460 .input_max = 31000000, 461 .cf_min = 1000000, 462 .cf_max = 6000000, 463 .vco_min = 20000000, 464 .vco_max = 1200000000, 465 .base_reg = PLLX_BASE, 466 .misc_reg = PLLX_MISC, 467 .lock_bit_idx = PLL_BASE_LOCK, 468 .lock_enable_bit_idx = PLL_MISC_LOCK_ENABLE, 469 .lock_delay = 300, 470}; 471 472static struct tegra_clk_pll_params pll_e_params = { 473 .input_min = 12000000, 474 .input_max = 12000000, 475 .cf_min = 0, 476 .cf_max = 0, 477 .vco_min = 0, 478 .vco_max = 0, 479 .base_reg = PLLE_BASE, 480 .misc_reg = PLLE_MISC, 481 .lock_bit_idx = PLLE_MISC_LOCK, 482 .lock_enable_bit_idx = PLLE_MISC_LOCK_ENABLE, 483 .lock_delay = 0, 484}; 485 486/* Peripheral clock registers */ 487static struct tegra_clk_periph_regs periph_l_regs = { 488 .enb_reg = CLK_OUT_ENB_L, 489 .enb_set_reg = CLK_OUT_ENB_SET_L, 490 .enb_clr_reg = CLK_OUT_ENB_CLR_L, 491 .rst_reg = RST_DEVICES_L, 492 .rst_set_reg = RST_DEVICES_SET_L, 493 .rst_clr_reg = RST_DEVICES_CLR_L, 494}; 495 496static struct tegra_clk_periph_regs periph_h_regs = { 497 .enb_reg = CLK_OUT_ENB_H, 498 .enb_set_reg = CLK_OUT_ENB_SET_H, 499 .enb_clr_reg = CLK_OUT_ENB_CLR_H, 500 .rst_reg = RST_DEVICES_H, 501 .rst_set_reg = RST_DEVICES_SET_H, 502 .rst_clr_reg = RST_DEVICES_CLR_H, 503}; 504 505static struct tegra_clk_periph_regs periph_u_regs = { 506 .enb_reg = CLK_OUT_ENB_U, 507 .enb_set_reg = CLK_OUT_ENB_SET_U, 508 .enb_clr_reg = CLK_OUT_ENB_CLR_U, 509 .rst_reg = RST_DEVICES_U, 510 .rst_set_reg = RST_DEVICES_SET_U, 511 .rst_clr_reg = RST_DEVICES_CLR_U, 512}; 513 514static unsigned long tegra20_clk_measure_input_freq(void) 515{ 516 u32 osc_ctrl = readl_relaxed(clk_base + OSC_CTRL); 517 u32 auto_clk_control = osc_ctrl & OSC_CTRL_OSC_FREQ_MASK; 518 u32 pll_ref_div = osc_ctrl & OSC_CTRL_PLL_REF_DIV_MASK; 519 unsigned long input_freq; 520 521 switch (auto_clk_control) { 522 case OSC_CTRL_OSC_FREQ_12MHZ: 523 BUG_ON(pll_ref_div != OSC_CTRL_PLL_REF_DIV_1); 524 input_freq = 12000000; 525 break; 526 case OSC_CTRL_OSC_FREQ_13MHZ: 527 BUG_ON(pll_ref_div != OSC_CTRL_PLL_REF_DIV_1); 528 input_freq = 13000000; 529 break; 530 case OSC_CTRL_OSC_FREQ_19_2MHZ: 531 BUG_ON(pll_ref_div != OSC_CTRL_PLL_REF_DIV_1); 532 input_freq = 19200000; 533 break; 534 case OSC_CTRL_OSC_FREQ_26MHZ: 535 BUG_ON(pll_ref_div != OSC_CTRL_PLL_REF_DIV_1); 536 input_freq = 26000000; 537 break; 538 default: 539 pr_err("Unexpected clock autodetect value %d", 540 auto_clk_control); 541 BUG(); 542 return 0; 543 } 544 545 return input_freq; 546} 547 548static unsigned int tegra20_get_pll_ref_div(void) 549{ 550 u32 pll_ref_div = readl_relaxed(clk_base + OSC_CTRL) & 551 OSC_CTRL_PLL_REF_DIV_MASK; 552 553 switch (pll_ref_div) { 554 case OSC_CTRL_PLL_REF_DIV_1: 555 return 1; 556 case OSC_CTRL_PLL_REF_DIV_2: 557 return 2; 558 case OSC_CTRL_PLL_REF_DIV_4: 559 return 4; 560 default: 561 pr_err("Invalied pll ref divider %d\n", pll_ref_div); 562 BUG(); 563 } 564 return 0; 565} 566 567static void tegra20_pll_init(void) 568{ 569 struct clk *clk; 570 571 /* PLLC */ 572 clk = tegra_clk_register_pll("pll_c", "pll_ref", clk_base, NULL, 0, 573 0, &pll_c_params, TEGRA_PLL_HAS_CPCON, 574 pll_c_freq_table, NULL); 575 clk_register_clkdev(clk, "pll_c", NULL); 576 clks[pll_c] = clk; 577 578 /* PLLC_OUT1 */ 579 clk = tegra_clk_register_divider("pll_c_out1_div", "pll_c", 580 clk_base + PLLC_OUT, 0, TEGRA_DIVIDER_ROUND_UP, 581 8, 8, 1, NULL); 582 clk = tegra_clk_register_pll_out("pll_c_out1", "pll_c_out1_div", 583 clk_base + PLLC_OUT, 1, 0, CLK_SET_RATE_PARENT, 584 0, NULL); 585 clk_register_clkdev(clk, "pll_c_out1", NULL); 586 clks[pll_c_out1] = clk; 587 588 /* PLLP */ 589 clk = tegra_clk_register_pll("pll_p", "pll_ref", clk_base, NULL, 0, 590 216000000, &pll_p_params, TEGRA_PLL_FIXED | 591 TEGRA_PLL_HAS_CPCON, pll_p_freq_table, NULL); 592 clk_register_clkdev(clk, "pll_p", NULL); 593 clks[pll_p] = clk; 594 595 /* PLLP_OUT1 */ 596 clk = tegra_clk_register_divider("pll_p_out1_div", "pll_p", 597 clk_base + PLLP_OUTA, 0, 598 TEGRA_DIVIDER_FIXED | TEGRA_DIVIDER_ROUND_UP, 599 8, 8, 1, &pll_div_lock); 600 clk = tegra_clk_register_pll_out("pll_p_out1", "pll_p_out1_div", 601 clk_base + PLLP_OUTA, 1, 0, 602 CLK_IGNORE_UNUSED | CLK_SET_RATE_PARENT, 0, 603 &pll_div_lock); 604 clk_register_clkdev(clk, "pll_p_out1", NULL); 605 clks[pll_p_out1] = clk; 606 607 /* PLLP_OUT2 */ 608 clk = tegra_clk_register_divider("pll_p_out2_div", "pll_p", 609 clk_base + PLLP_OUTA, 0, 610 TEGRA_DIVIDER_FIXED | TEGRA_DIVIDER_ROUND_UP, 611 24, 8, 1, &pll_div_lock); 612 clk = tegra_clk_register_pll_out("pll_p_out2", "pll_p_out2_div", 613 clk_base + PLLP_OUTA, 17, 16, 614 CLK_IGNORE_UNUSED | CLK_SET_RATE_PARENT, 0, 615 &pll_div_lock); 616 clk_register_clkdev(clk, "pll_p_out2", NULL); 617 clks[pll_p_out2] = clk; 618 619 /* PLLP_OUT3 */ 620 clk = tegra_clk_register_divider("pll_p_out3_div", "pll_p", 621 clk_base + PLLP_OUTB, 0, 622 TEGRA_DIVIDER_FIXED | TEGRA_DIVIDER_ROUND_UP, 623 8, 8, 1, &pll_div_lock); 624 clk = tegra_clk_register_pll_out("pll_p_out3", "pll_p_out3_div", 625 clk_base + PLLP_OUTB, 1, 0, 626 CLK_IGNORE_UNUSED | CLK_SET_RATE_PARENT, 0, 627 &pll_div_lock); 628 clk_register_clkdev(clk, "pll_p_out3", NULL); 629 clks[pll_p_out3] = clk; 630 631 /* PLLP_OUT4 */ 632 clk = tegra_clk_register_divider("pll_p_out4_div", "pll_p", 633 clk_base + PLLP_OUTB, 0, 634 TEGRA_DIVIDER_FIXED | TEGRA_DIVIDER_ROUND_UP, 635 24, 8, 1, &pll_div_lock); 636 clk = tegra_clk_register_pll_out("pll_p_out4", "pll_p_out4_div", 637 clk_base + PLLP_OUTB, 17, 16, 638 CLK_IGNORE_UNUSED | CLK_SET_RATE_PARENT, 0, 639 &pll_div_lock); 640 clk_register_clkdev(clk, "pll_p_out4", NULL); 641 clks[pll_p_out4] = clk; 642 643 /* PLLM */ 644 clk = tegra_clk_register_pll("pll_m", "pll_ref", clk_base, NULL, 645 CLK_IGNORE_UNUSED | CLK_SET_RATE_GATE, 0, 646 &pll_m_params, TEGRA_PLL_HAS_CPCON, 647 pll_m_freq_table, NULL); 648 clk_register_clkdev(clk, "pll_m", NULL); 649 clks[pll_m] = clk; 650 651 /* PLLM_OUT1 */ 652 clk = tegra_clk_register_divider("pll_m_out1_div", "pll_m", 653 clk_base + PLLM_OUT, 0, TEGRA_DIVIDER_ROUND_UP, 654 8, 8, 1, NULL); 655 clk = tegra_clk_register_pll_out("pll_m_out1", "pll_m_out1_div", 656 clk_base + PLLM_OUT, 1, 0, CLK_IGNORE_UNUSED | 657 CLK_SET_RATE_PARENT, 0, NULL); 658 clk_register_clkdev(clk, "pll_m_out1", NULL); 659 clks[pll_m_out1] = clk; 660 661 /* PLLX */ 662 clk = tegra_clk_register_pll("pll_x", "pll_ref", clk_base, NULL, 0, 663 0, &pll_x_params, TEGRA_PLL_HAS_CPCON, 664 pll_x_freq_table, NULL); 665 clk_register_clkdev(clk, "pll_x", NULL); 666 clks[pll_x] = clk; 667 668 /* PLLU */ 669 clk = tegra_clk_register_pll("pll_u", "pll_ref", clk_base, NULL, 0, 670 0, &pll_u_params, TEGRA_PLLU | TEGRA_PLL_HAS_CPCON, 671 pll_u_freq_table, NULL); 672 clk_register_clkdev(clk, "pll_u", NULL); 673 clks[pll_u] = clk; 674 675 /* PLLD */ 676 clk = tegra_clk_register_pll("pll_d", "pll_ref", clk_base, NULL, 0, 677 0, &pll_d_params, TEGRA_PLL_HAS_CPCON, 678 pll_d_freq_table, NULL); 679 clk_register_clkdev(clk, "pll_d", NULL); 680 clks[pll_d] = clk; 681 682 /* PLLD_OUT0 */ 683 clk = clk_register_fixed_factor(NULL, "pll_d_out0", "pll_d", 684 CLK_SET_RATE_PARENT, 1, 2); 685 clk_register_clkdev(clk, "pll_d_out0", NULL); 686 clks[pll_d_out0] = clk; 687 688 /* PLLA */ 689 clk = tegra_clk_register_pll("pll_a", "pll_p_out1", clk_base, NULL, 0, 690 0, &pll_a_params, TEGRA_PLL_HAS_CPCON, 691 pll_a_freq_table, NULL); 692 clk_register_clkdev(clk, "pll_a", NULL); 693 clks[pll_a] = clk; 694 695 /* PLLA_OUT0 */ 696 clk = tegra_clk_register_divider("pll_a_out0_div", "pll_a", 697 clk_base + PLLA_OUT, 0, TEGRA_DIVIDER_ROUND_UP, 698 8, 8, 1, NULL); 699 clk = tegra_clk_register_pll_out("pll_a_out0", "pll_a_out0_div", 700 clk_base + PLLA_OUT, 1, 0, CLK_IGNORE_UNUSED | 701 CLK_SET_RATE_PARENT, 0, NULL); 702 clk_register_clkdev(clk, "pll_a_out0", NULL); 703 clks[pll_a_out0] = clk; 704 705 /* PLLE */ 706 clk = tegra_clk_register_plle("pll_e", "pll_ref", clk_base, NULL, 707 0, 100000000, &pll_e_params, 708 0, pll_e_freq_table, NULL); 709 clk_register_clkdev(clk, "pll_e", NULL); 710 clks[pll_e] = clk; 711} 712 713static const char *cclk_parents[] = { "clk_m", "pll_c", "clk_32k", "pll_m", 714 "pll_p_cclk", "pll_p_out4_cclk", 715 "pll_p_out3_cclk", "clk_d", "pll_x" }; 716static const char *sclk_parents[] = { "clk_m", "pll_c_out1", "pll_p_out4", 717 "pll_p_out3", "pll_p_out2", "clk_d", 718 "clk_32k", "pll_m_out1" }; 719 720static void tegra20_super_clk_init(void) 721{ 722 struct clk *clk; 723 724 /* 725 * DIV_U71 dividers for CCLK, these dividers are used only 726 * if parent clock is fixed rate. 727 */ 728 729 /* 730 * Clock input to cclk divided from pll_p using 731 * U71 divider of cclk. 732 */ 733 clk = tegra_clk_register_divider("pll_p_cclk", "pll_p", 734 clk_base + SUPER_CCLK_DIVIDER, 0, 735 TEGRA_DIVIDER_INT, 16, 8, 1, NULL); 736 clk_register_clkdev(clk, "pll_p_cclk", NULL); 737 738 /* 739 * Clock input to cclk divided from pll_p_out3 using 740 * U71 divider of cclk. 741 */ 742 clk = tegra_clk_register_divider("pll_p_out3_cclk", "pll_p_out3", 743 clk_base + SUPER_CCLK_DIVIDER, 0, 744 TEGRA_DIVIDER_INT, 16, 8, 1, NULL); 745 clk_register_clkdev(clk, "pll_p_out3_cclk", NULL); 746 747 /* 748 * Clock input to cclk divided from pll_p_out4 using 749 * U71 divider of cclk. 750 */ 751 clk = tegra_clk_register_divider("pll_p_out4_cclk", "pll_p_out4", 752 clk_base + SUPER_CCLK_DIVIDER, 0, 753 TEGRA_DIVIDER_INT, 16, 8, 1, NULL); 754 clk_register_clkdev(clk, "pll_p_out4_cclk", NULL); 755 756 /* CCLK */ 757 clk = tegra_clk_register_super_mux("cclk", cclk_parents, 758 ARRAY_SIZE(cclk_parents), CLK_SET_RATE_PARENT, 759 clk_base + CCLK_BURST_POLICY, 0, 4, 0, 0, NULL); 760 clk_register_clkdev(clk, "cclk", NULL); 761 clks[cclk] = clk; 762 763 /* SCLK */ 764 clk = tegra_clk_register_super_mux("sclk", sclk_parents, 765 ARRAY_SIZE(sclk_parents), CLK_SET_RATE_PARENT, 766 clk_base + SCLK_BURST_POLICY, 0, 4, 0, 0, NULL); 767 clk_register_clkdev(clk, "sclk", NULL); 768 clks[sclk] = clk; 769 770 /* HCLK */ 771 clk = clk_register_divider(NULL, "hclk_div", "sclk", 0, 772 clk_base + CLK_SYSTEM_RATE, 4, 2, 0, 773 &sysrate_lock); 774 clk = clk_register_gate(NULL, "hclk", "hclk_div", CLK_SET_RATE_PARENT, 775 clk_base + CLK_SYSTEM_RATE, 7, 776 CLK_GATE_SET_TO_DISABLE, &sysrate_lock); 777 clk_register_clkdev(clk, "hclk", NULL); 778 clks[hclk] = clk; 779 780 /* PCLK */ 781 clk = clk_register_divider(NULL, "pclk_div", "hclk", 0, 782 clk_base + CLK_SYSTEM_RATE, 0, 2, 0, 783 &sysrate_lock); 784 clk = clk_register_gate(NULL, "pclk", "pclk_div", CLK_SET_RATE_PARENT, 785 clk_base + CLK_SYSTEM_RATE, 3, 786 CLK_GATE_SET_TO_DISABLE, &sysrate_lock); 787 clk_register_clkdev(clk, "pclk", NULL); 788 clks[pclk] = clk; 789 790 /* twd */ 791 clk = clk_register_fixed_factor(NULL, "twd", "cclk", 0, 1, 4); 792 clk_register_clkdev(clk, "twd", NULL); 793 clks[twd] = clk; 794} 795 796static const char *audio_parents[] = {"spdif_in", "i2s1", "i2s2", "unused", 797 "pll_a_out0", "unused", "unused", 798 "unused"}; 799 800static void __init tegra20_audio_clk_init(void) 801{ 802 struct clk *clk; 803 804 /* audio */ 805 clk = clk_register_mux(NULL, "audio_mux", audio_parents, 806 ARRAY_SIZE(audio_parents), 0, 807 clk_base + AUDIO_SYNC_CLK, 0, 3, 0, NULL); 808 clk = clk_register_gate(NULL, "audio", "audio_mux", 0, 809 clk_base + AUDIO_SYNC_CLK, 4, 810 CLK_GATE_SET_TO_DISABLE, NULL); 811 clk_register_clkdev(clk, "audio", NULL); 812 clks[audio] = clk; 813 814 /* audio_2x */ 815 clk = clk_register_fixed_factor(NULL, "audio_doubler", "audio", 816 CLK_SET_RATE_PARENT, 2, 1); 817 clk = tegra_clk_register_periph_gate("audio_2x", "audio_doubler", 818 TEGRA_PERIPH_NO_RESET, clk_base, 819 CLK_SET_RATE_PARENT, 89, &periph_u_regs, 820 periph_clk_enb_refcnt); 821 clk_register_clkdev(clk, "audio_2x", NULL); 822 clks[audio_2x] = clk; 823 824} 825 826static const char *i2s1_parents[] = {"pll_a_out0", "audio_2x", "pll_p", 827 "clk_m"}; 828static const char *i2s2_parents[] = {"pll_a_out0", "audio_2x", "pll_p", 829 "clk_m"}; 830static const char *spdif_out_parents[] = {"pll_a_out0", "audio_2x", "pll_p", 831 "clk_m"}; 832static const char *spdif_in_parents[] = {"pll_p", "pll_c", "pll_m"}; 833static const char *pwm_parents[] = {"pll_p", "pll_c", "audio", "clk_m", 834 "clk_32k"}; 835static const char *mux_pllpcm_clkm[] = {"pll_p", "pll_c", "pll_m", "clk_m"}; 836static const char *mux_pllmcpa[] = {"pll_m", "pll_c", "pll_c", "pll_a"}; 837static const char *mux_pllpdc_clkm[] = {"pll_p", "pll_d_out0", "pll_c", 838 "clk_m"}; 839static const char *mux_pllmcp_clkm[] = {"pll_m", "pll_c", "pll_p", "clk_m"}; 840 841static struct tegra_periph_init_data tegra_periph_clk_list[] = { 842 TEGRA_INIT_DATA_MUX("i2s1", NULL, "tegra20-i2s.0", i2s1_parents, CLK_SOURCE_I2S1, 11, &periph_l_regs, TEGRA_PERIPH_ON_APB, i2s1), 843 TEGRA_INIT_DATA_MUX("i2s2", NULL, "tegra20-i2s.1", i2s2_parents, CLK_SOURCE_I2S2, 18, &periph_l_regs, TEGRA_PERIPH_ON_APB, i2s2), 844 TEGRA_INIT_DATA_MUX("spdif_out", "spdif_out", "tegra20-spdif", spdif_out_parents, CLK_SOURCE_SPDIF_OUT, 10, &periph_l_regs, TEGRA_PERIPH_ON_APB, spdif_out), 845 TEGRA_INIT_DATA_MUX("spdif_in", "spdif_in", "tegra20-spdif", spdif_in_parents, CLK_SOURCE_SPDIF_IN, 10, &periph_l_regs, TEGRA_PERIPH_ON_APB, spdif_in), 846 TEGRA_INIT_DATA_MUX("sbc1", NULL, "spi_tegra.0", mux_pllpcm_clkm, CLK_SOURCE_SBC1, 41, &periph_h_regs, TEGRA_PERIPH_ON_APB, sbc1), 847 TEGRA_INIT_DATA_MUX("sbc2", NULL, "spi_tegra.1", mux_pllpcm_clkm, CLK_SOURCE_SBC2, 44, &periph_h_regs, TEGRA_PERIPH_ON_APB, sbc2), 848 TEGRA_INIT_DATA_MUX("sbc3", NULL, "spi_tegra.2", mux_pllpcm_clkm, CLK_SOURCE_SBC3, 46, &periph_h_regs, TEGRA_PERIPH_ON_APB, sbc3), 849 TEGRA_INIT_DATA_MUX("sbc4", NULL, "spi_tegra.3", mux_pllpcm_clkm, CLK_SOURCE_SBC4, 68, &periph_u_regs, TEGRA_PERIPH_ON_APB, sbc4), 850 TEGRA_INIT_DATA_MUX("spi", NULL, "spi", mux_pllpcm_clkm, CLK_SOURCE_SPI, 43, &periph_h_regs, TEGRA_PERIPH_ON_APB, spi), 851 TEGRA_INIT_DATA_MUX("xio", NULL, "xio", mux_pllpcm_clkm, CLK_SOURCE_XIO, 45, &periph_h_regs, 0, xio), 852 TEGRA_INIT_DATA_MUX("twc", NULL, "twc", mux_pllpcm_clkm, CLK_SOURCE_TWC, 16, &periph_l_regs, TEGRA_PERIPH_ON_APB, twc), 853 TEGRA_INIT_DATA_MUX("ide", NULL, "ide", mux_pllpcm_clkm, CLK_SOURCE_XIO, 25, &periph_l_regs, 0, ide), 854 TEGRA_INIT_DATA_MUX("ndflash", NULL, "tegra_nand", mux_pllpcm_clkm, CLK_SOURCE_NDFLASH, 13, &periph_l_regs, 0, ndflash), 855 TEGRA_INIT_DATA_MUX("vfir", NULL, "vfir", mux_pllpcm_clkm, CLK_SOURCE_VFIR, 7, &periph_l_regs, TEGRA_PERIPH_ON_APB, vfir), 856 TEGRA_INIT_DATA_MUX("csite", NULL, "csite", mux_pllpcm_clkm, CLK_SOURCE_CSITE, 73, &periph_u_regs, 0, csite), 857 TEGRA_INIT_DATA_MUX("la", NULL, "la", mux_pllpcm_clkm, CLK_SOURCE_LA, 76, &periph_u_regs, 0, la), 858 TEGRA_INIT_DATA_MUX("owr", NULL, "tegra_w1", mux_pllpcm_clkm, CLK_SOURCE_OWR, 71, &periph_u_regs, TEGRA_PERIPH_ON_APB, owr), 859 TEGRA_INIT_DATA_MUX("mipi", NULL, "mipi", mux_pllpcm_clkm, CLK_SOURCE_MIPI, 50, &periph_h_regs, TEGRA_PERIPH_ON_APB, mipi), 860 TEGRA_INIT_DATA_MUX("vde", NULL, "vde", mux_pllpcm_clkm, CLK_SOURCE_VDE, 61, &periph_h_regs, 0, vde), 861 TEGRA_INIT_DATA_MUX("vi", "vi", "tegra_camera", mux_pllmcpa, CLK_SOURCE_VI, 20, &periph_l_regs, 0, vi), 862 TEGRA_INIT_DATA_MUX("epp", NULL, "epp", mux_pllmcpa, CLK_SOURCE_EPP, 19, &periph_l_regs, 0, epp), 863 TEGRA_INIT_DATA_MUX("mpe", NULL, "mpe", mux_pllmcpa, CLK_SOURCE_MPE, 60, &periph_h_regs, 0, mpe), 864 TEGRA_INIT_DATA_MUX("host1x", NULL, "host1x", mux_pllmcpa, CLK_SOURCE_HOST1X, 28, &periph_l_regs, 0, host1x), 865 TEGRA_INIT_DATA_MUX("3d", NULL, "3d", mux_pllmcpa, CLK_SOURCE_3D, 24, &periph_l_regs, TEGRA_PERIPH_MANUAL_RESET, gr3d), 866 TEGRA_INIT_DATA_MUX("2d", NULL, "2d", mux_pllmcpa, CLK_SOURCE_2D, 21, &periph_l_regs, 0, gr2d), 867 TEGRA_INIT_DATA_MUX("nor", NULL, "tegra-nor", mux_pllpcm_clkm, CLK_SOURCE_NOR, 42, &periph_h_regs, 0, nor), 868 TEGRA_INIT_DATA_MUX("sdmmc1", NULL, "sdhci-tegra.0", mux_pllpcm_clkm, CLK_SOURCE_SDMMC1, 14, &periph_l_regs, 0, sdmmc1), 869 TEGRA_INIT_DATA_MUX("sdmmc2", NULL, "sdhci-tegra.1", mux_pllpcm_clkm, CLK_SOURCE_SDMMC2, 9, &periph_l_regs, 0, sdmmc2), 870 TEGRA_INIT_DATA_MUX("sdmmc3", NULL, "sdhci-tegra.2", mux_pllpcm_clkm, CLK_SOURCE_SDMMC3, 69, &periph_u_regs, 0, sdmmc3), 871 TEGRA_INIT_DATA_MUX("sdmmc4", NULL, "sdhci-tegra.3", mux_pllpcm_clkm, CLK_SOURCE_SDMMC4, 15, &periph_l_regs, 0, sdmmc4), 872 TEGRA_INIT_DATA_MUX("cve", NULL, "cve", mux_pllpdc_clkm, CLK_SOURCE_CVE, 49, &periph_h_regs, 0, cve), 873 TEGRA_INIT_DATA_MUX("tvo", NULL, "tvo", mux_pllpdc_clkm, CLK_SOURCE_TVO, 49, &periph_h_regs, 0, tvo), 874 TEGRA_INIT_DATA_MUX("tvdac", NULL, "tvdac", mux_pllpdc_clkm, CLK_SOURCE_TVDAC, 53, &periph_h_regs, 0, tvdac), 875 TEGRA_INIT_DATA_MUX("vi_sensor", "vi_sensor", "tegra_camera", mux_pllmcpa, CLK_SOURCE_VI_SENSOR, 20, &periph_l_regs, TEGRA_PERIPH_NO_RESET, vi_sensor), 876 TEGRA_INIT_DATA_DIV16("i2c1", "div-clk", "tegra-i2c.0", mux_pllpcm_clkm, CLK_SOURCE_I2C1, 12, &periph_l_regs, TEGRA_PERIPH_ON_APB, i2c1), 877 TEGRA_INIT_DATA_DIV16("i2c2", "div-clk", "tegra-i2c.1", mux_pllpcm_clkm, CLK_SOURCE_I2C2, 54, &periph_h_regs, TEGRA_PERIPH_ON_APB, i2c2), 878 TEGRA_INIT_DATA_DIV16("i2c3", "div-clk", "tegra-i2c.2", mux_pllpcm_clkm, CLK_SOURCE_I2C3, 67, &periph_u_regs, TEGRA_PERIPH_ON_APB, i2c3), 879 TEGRA_INIT_DATA_DIV16("dvc", "div-clk", "tegra-i2c.3", mux_pllpcm_clkm, CLK_SOURCE_DVC, 47, &periph_h_regs, TEGRA_PERIPH_ON_APB, dvc), 880 TEGRA_INIT_DATA_MUX("hdmi", NULL, "hdmi", mux_pllpdc_clkm, CLK_SOURCE_HDMI, 51, &periph_h_regs, 0, hdmi), 881 TEGRA_INIT_DATA("pwm", NULL, "tegra-pwm", pwm_parents, CLK_SOURCE_PWM, 28, 3, 0, 0, 8, 1, 0, &periph_l_regs, 17, periph_clk_enb_refcnt, TEGRA_PERIPH_ON_APB, pwm), 882}; 883 884static struct tegra_periph_init_data tegra_periph_nodiv_clk_list[] = { 885 TEGRA_INIT_DATA_NODIV("uarta", NULL, "tegra_uart.0", mux_pllpcm_clkm, CLK_SOURCE_UARTA, 30, 2, 6, &periph_l_regs, TEGRA_PERIPH_ON_APB, uarta), 886 TEGRA_INIT_DATA_NODIV("uartb", NULL, "tegra_uart.1", mux_pllpcm_clkm, CLK_SOURCE_UARTB, 30, 2, 7, &periph_l_regs, TEGRA_PERIPH_ON_APB, uartb), 887 TEGRA_INIT_DATA_NODIV("uartc", NULL, "tegra_uart.2", mux_pllpcm_clkm, CLK_SOURCE_UARTC, 30, 2, 55, &periph_h_regs, TEGRA_PERIPH_ON_APB, uartc), 888 TEGRA_INIT_DATA_NODIV("uartd", NULL, "tegra_uart.3", mux_pllpcm_clkm, CLK_SOURCE_UARTD, 30, 2, 65, &periph_u_regs, TEGRA_PERIPH_ON_APB, uartd), 889 TEGRA_INIT_DATA_NODIV("uarte", NULL, "tegra_uart.4", mux_pllpcm_clkm, CLK_SOURCE_UARTE, 30, 2, 66, &periph_u_regs, TEGRA_PERIPH_ON_APB, uarte), 890 TEGRA_INIT_DATA_NODIV("disp1", NULL, "tegradc.0", mux_pllpdc_clkm, CLK_SOURCE_DISP1, 30, 2, 27, &periph_l_regs, 0, disp1), 891 TEGRA_INIT_DATA_NODIV("disp2", NULL, "tegradc.1", mux_pllpdc_clkm, CLK_SOURCE_DISP2, 30, 2, 26, &periph_l_regs, 0, disp2), 892}; 893 894static void __init tegra20_periph_clk_init(void) 895{ 896 struct tegra_periph_init_data *data; 897 struct clk *clk; 898 int i; 899 900 /* apbdma */ 901 clk = tegra_clk_register_periph_gate("apbdma", "pclk", 0, clk_base, 902 0, 34, &periph_h_regs, 903 periph_clk_enb_refcnt); 904 clk_register_clkdev(clk, NULL, "tegra-apbdma"); 905 clks[apbdma] = clk; 906 907 /* rtc */ 908 clk = tegra_clk_register_periph_gate("rtc", "clk_32k", 909 TEGRA_PERIPH_NO_RESET, 910 clk_base, 0, 4, &periph_l_regs, 911 periph_clk_enb_refcnt); 912 clk_register_clkdev(clk, NULL, "rtc-tegra"); 913 clks[rtc] = clk; 914 915 /* timer */ 916 clk = tegra_clk_register_periph_gate("timer", "clk_m", 0, clk_base, 917 0, 5, &periph_l_regs, 918 periph_clk_enb_refcnt); 919 clk_register_clkdev(clk, NULL, "timer"); 920 clks[timer] = clk; 921 922 /* kbc */ 923 clk = tegra_clk_register_periph_gate("kbc", "clk_32k", 924 TEGRA_PERIPH_NO_RESET | TEGRA_PERIPH_ON_APB, 925 clk_base, 0, 36, &periph_h_regs, 926 periph_clk_enb_refcnt); 927 clk_register_clkdev(clk, NULL, "tegra-kbc"); 928 clks[kbc] = clk; 929 930 /* csus */ 931 clk = tegra_clk_register_periph_gate("csus", "clk_m", 932 TEGRA_PERIPH_NO_RESET, 933 clk_base, 0, 92, &periph_u_regs, 934 periph_clk_enb_refcnt); 935 clk_register_clkdev(clk, "csus", "tengra_camera"); 936 clks[csus] = clk; 937 938 /* vcp */ 939 clk = tegra_clk_register_periph_gate("vcp", "clk_m", 0, 940 clk_base, 0, 29, &periph_l_regs, 941 periph_clk_enb_refcnt); 942 clk_register_clkdev(clk, "vcp", "tegra-avp"); 943 clks[vcp] = clk; 944 945 /* bsea */ 946 clk = tegra_clk_register_periph_gate("bsea", "clk_m", 0, 947 clk_base, 0, 62, &periph_h_regs, 948 periph_clk_enb_refcnt); 949 clk_register_clkdev(clk, "bsea", "tegra-avp"); 950 clks[bsea] = clk; 951 952 /* bsev */ 953 clk = tegra_clk_register_periph_gate("bsev", "clk_m", 0, 954 clk_base, 0, 63, &periph_h_regs, 955 periph_clk_enb_refcnt); 956 clk_register_clkdev(clk, "bsev", "tegra-aes"); 957 clks[bsev] = clk; 958 959 /* emc */ 960 clk = clk_register_mux(NULL, "emc_mux", mux_pllmcp_clkm, 961 ARRAY_SIZE(mux_pllmcp_clkm), 0, 962 clk_base + CLK_SOURCE_EMC, 963 30, 2, 0, NULL); 964 clk = tegra_clk_register_periph_gate("emc", "emc_mux", 0, clk_base, 0, 965 57, &periph_h_regs, periph_clk_enb_refcnt); 966 clk_register_clkdev(clk, "emc", NULL); 967 clks[emc] = clk; 968 969 /* usbd */ 970 clk = tegra_clk_register_periph_gate("usbd", "clk_m", 0, clk_base, 0, 971 22, &periph_l_regs, periph_clk_enb_refcnt); 972 clk_register_clkdev(clk, NULL, "fsl-tegra-udc"); 973 clks[usbd] = clk; 974 975 /* usb2 */ 976 clk = tegra_clk_register_periph_gate("usb2", "clk_m", 0, clk_base, 0, 977 58, &periph_h_regs, periph_clk_enb_refcnt); 978 clk_register_clkdev(clk, NULL, "tegra-ehci.1"); 979 clks[usb2] = clk; 980 981 /* usb3 */ 982 clk = tegra_clk_register_periph_gate("usb3", "clk_m", 0, clk_base, 0, 983 59, &periph_h_regs, periph_clk_enb_refcnt); 984 clk_register_clkdev(clk, NULL, "tegra-ehci.2"); 985 clks[usb3] = clk; 986 987 /* dsi */ 988 clk = tegra_clk_register_periph_gate("dsi", "pll_d", 0, clk_base, 0, 989 48, &periph_h_regs, periph_clk_enb_refcnt); 990 clk_register_clkdev(clk, NULL, "dsi"); 991 clks[dsi] = clk; 992 993 /* csi */ 994 clk = tegra_clk_register_periph_gate("csi", "pll_p_out3", 0, clk_base, 995 0, 52, &periph_h_regs, 996 periph_clk_enb_refcnt); 997 clk_register_clkdev(clk, "csi", "tegra_camera"); 998 clks[csi] = clk; 999 1000 /* isp */ 1001 clk = tegra_clk_register_periph_gate("isp", "clk_m", 0, clk_base, 0, 23, 1002 &periph_l_regs, periph_clk_enb_refcnt); 1003 clk_register_clkdev(clk, "isp", "tegra_camera"); 1004 clks[isp] = clk; 1005 1006 /* pex */ 1007 clk = tegra_clk_register_periph_gate("pex", "clk_m", 0, clk_base, 0, 70, 1008 &periph_u_regs, periph_clk_enb_refcnt); 1009 clk_register_clkdev(clk, "pex", NULL); 1010 clks[pex] = clk; 1011 1012 /* afi */ 1013 clk = tegra_clk_register_periph_gate("afi", "clk_m", 0, clk_base, 0, 72, 1014 &periph_u_regs, periph_clk_enb_refcnt); 1015 clk_register_clkdev(clk, "afi", NULL); 1016 clks[afi] = clk; 1017 1018 /* pcie_xclk */ 1019 clk = tegra_clk_register_periph_gate("pcie_xclk", "clk_m", 0, clk_base, 1020 0, 74, &periph_u_regs, 1021 periph_clk_enb_refcnt); 1022 clk_register_clkdev(clk, "pcie_xclk", NULL); 1023 clks[pcie_xclk] = clk; 1024 1025 /* cdev1 */ 1026 clk = clk_register_fixed_rate(NULL, "cdev1_fixed", NULL, CLK_IS_ROOT, 1027 26000000); 1028 clk = tegra_clk_register_periph_gate("cdev1", "cdev1_fixed", 0, 1029 clk_base, 0, 94, &periph_u_regs, 1030 periph_clk_enb_refcnt); 1031 clk_register_clkdev(clk, "cdev1", NULL); 1032 clks[cdev1] = clk; 1033 1034 /* cdev2 */ 1035 clk = clk_register_fixed_rate(NULL, "cdev2_fixed", NULL, CLK_IS_ROOT, 1036 26000000); 1037 clk = tegra_clk_register_periph_gate("cdev2", "cdev2_fixed", 0, 1038 clk_base, 0, 93, &periph_u_regs, 1039 periph_clk_enb_refcnt); 1040 clk_register_clkdev(clk, "cdev2", NULL); 1041 clks[cdev2] = clk; 1042 1043 for (i = 0; i < ARRAY_SIZE(tegra_periph_clk_list); i++) { 1044 data = &tegra_periph_clk_list[i]; 1045 clk = tegra_clk_register_periph(data->name, data->parent_names, 1046 data->num_parents, &data->periph, 1047 clk_base, data->offset); 1048 clk_register_clkdev(clk, data->con_id, data->dev_id); 1049 clks[data->clk_id] = clk; 1050 } 1051 1052 for (i = 0; i < ARRAY_SIZE(tegra_periph_nodiv_clk_list); i++) { 1053 data = &tegra_periph_nodiv_clk_list[i]; 1054 clk = tegra_clk_register_periph_nodiv(data->name, 1055 data->parent_names, 1056 data->num_parents, &data->periph, 1057 clk_base, data->offset); 1058 clk_register_clkdev(clk, data->con_id, data->dev_id); 1059 clks[data->clk_id] = clk; 1060 } 1061} 1062 1063 1064static void __init tegra20_fixed_clk_init(void) 1065{ 1066 struct clk *clk; 1067 1068 /* clk_32k */ 1069 clk = clk_register_fixed_rate(NULL, "clk_32k", NULL, CLK_IS_ROOT, 1070 32768); 1071 clk_register_clkdev(clk, "clk_32k", NULL); 1072 clks[clk_32k] = clk; 1073} 1074 1075static void __init tegra20_pmc_clk_init(void) 1076{ 1077 struct clk *clk; 1078 1079 /* blink */ 1080 writel_relaxed(0, pmc_base + PMC_BLINK_TIMER); 1081 clk = clk_register_gate(NULL, "blink_override", "clk_32k", 0, 1082 pmc_base + PMC_DPD_PADS_ORIDE, 1083 PMC_DPD_PADS_ORIDE_BLINK_ENB, 0, NULL); 1084 clk = clk_register_gate(NULL, "blink", "blink_override", 0, 1085 pmc_base + PMC_CTRL, 1086 PMC_CTRL_BLINK_ENB, 0, NULL); 1087 clk_register_clkdev(clk, "blink", NULL); 1088 clks[blink] = clk; 1089} 1090 1091static void __init tegra20_osc_clk_init(void) 1092{ 1093 struct clk *clk; 1094 unsigned long input_freq; 1095 unsigned int pll_ref_div; 1096 1097 input_freq = tegra20_clk_measure_input_freq(); 1098 1099 /* clk_m */ 1100 clk = clk_register_fixed_rate(NULL, "clk_m", NULL, CLK_IS_ROOT | 1101 CLK_IGNORE_UNUSED, input_freq); 1102 clk_register_clkdev(clk, "clk_m", NULL); 1103 clks[clk_m] = clk; 1104 1105 /* pll_ref */ 1106 pll_ref_div = tegra20_get_pll_ref_div(); 1107 clk = clk_register_fixed_factor(NULL, "pll_ref", "clk_m", 1108 CLK_SET_RATE_PARENT, 1, pll_ref_div); 1109 clk_register_clkdev(clk, "pll_ref", NULL); 1110 clks[pll_ref] = clk; 1111} 1112 1113/* Tegra20 CPU clock and reset control functions */ 1114static void tegra20_wait_cpu_in_reset(u32 cpu) 1115{ 1116 unsigned int reg; 1117 1118 do { 1119 reg = readl(clk_base + 1120 TEGRA_CLK_RST_CONTROLLER_RST_CPU_CMPLX_SET); 1121 cpu_relax(); 1122 } while (!(reg & (1 << cpu))); /* check CPU been reset or not */ 1123 1124 return; 1125} 1126 1127static void tegra20_put_cpu_in_reset(u32 cpu) 1128{ 1129 writel(CPU_RESET(cpu), 1130 clk_base + TEGRA_CLK_RST_CONTROLLER_RST_CPU_CMPLX_SET); 1131 dmb(); 1132} 1133 1134static void tegra20_cpu_out_of_reset(u32 cpu) 1135{ 1136 writel(CPU_RESET(cpu), 1137 clk_base + TEGRA_CLK_RST_CONTROLLER_RST_CPU_CMPLX_CLR); 1138 wmb(); 1139} 1140 1141static void tegra20_enable_cpu_clock(u32 cpu) 1142{ 1143 unsigned int reg; 1144 1145 reg = readl(clk_base + TEGRA_CLK_RST_CONTROLLER_CLK_CPU_CMPLX); 1146 writel(reg & ~CPU_CLOCK(cpu), 1147 clk_base + TEGRA_CLK_RST_CONTROLLER_CLK_CPU_CMPLX); 1148 barrier(); 1149 reg = readl(clk_base + TEGRA_CLK_RST_CONTROLLER_CLK_CPU_CMPLX); 1150} 1151 1152static void tegra20_disable_cpu_clock(u32 cpu) 1153{ 1154 unsigned int reg; 1155 1156 reg = readl(clk_base + TEGRA_CLK_RST_CONTROLLER_CLK_CPU_CMPLX); 1157 writel(reg | CPU_CLOCK(cpu), 1158 clk_base + TEGRA_CLK_RST_CONTROLLER_CLK_CPU_CMPLX); 1159} 1160 1161#ifdef CONFIG_PM_SLEEP 1162static bool tegra20_cpu_rail_off_ready(void) 1163{ 1164 unsigned int cpu_rst_status; 1165 1166 cpu_rst_status = readl(clk_base + 1167 TEGRA_CLK_RST_CONTROLLER_RST_CPU_CMPLX_SET); 1168 1169 return !!(cpu_rst_status & 0x2); 1170} 1171 1172static void tegra20_cpu_clock_suspend(void) 1173{ 1174 /* switch coresite to clk_m, save off original source */ 1175 tegra20_cpu_clk_sctx.clk_csite_src = 1176 readl(clk_base + CLK_SOURCE_CSITE); 1177 writel(3<<30, clk_base + CLK_SOURCE_CSITE); 1178 1179 tegra20_cpu_clk_sctx.cpu_burst = 1180 readl(clk_base + CCLK_BURST_POLICY); 1181 tegra20_cpu_clk_sctx.pllx_base = 1182 readl(clk_base + PLLX_BASE); 1183 tegra20_cpu_clk_sctx.pllx_misc = 1184 readl(clk_base + PLLX_MISC); 1185 tegra20_cpu_clk_sctx.cclk_divider = 1186 readl(clk_base + SUPER_CCLK_DIVIDER); 1187} 1188 1189static void tegra20_cpu_clock_resume(void) 1190{ 1191 unsigned int reg, policy; 1192 1193 /* Is CPU complex already running on PLLX? */ 1194 reg = readl(clk_base + CCLK_BURST_POLICY); 1195 policy = (reg >> CCLK_BURST_POLICY_SHIFT) & 0xF; 1196 1197 if (policy == CCLK_IDLE_POLICY) 1198 reg = (reg >> CCLK_IDLE_POLICY_SHIFT) & 0xF; 1199 else if (policy == CCLK_RUN_POLICY) 1200 reg = (reg >> CCLK_RUN_POLICY_SHIFT) & 0xF; 1201 else 1202 BUG(); 1203 1204 if (reg != CCLK_BURST_POLICY_PLLX) { 1205 /* restore PLLX settings if CPU is on different PLL */ 1206 writel(tegra20_cpu_clk_sctx.pllx_misc, 1207 clk_base + PLLX_MISC); 1208 writel(tegra20_cpu_clk_sctx.pllx_base, 1209 clk_base + PLLX_BASE); 1210 1211 /* wait for PLL stabilization if PLLX was enabled */ 1212 if (tegra20_cpu_clk_sctx.pllx_base & (1 << 30)) 1213 udelay(300); 1214 } 1215 1216 /* 1217 * Restore original burst policy setting for calls resulting from CPU 1218 * LP2 in idle or system suspend. 1219 */ 1220 writel(tegra20_cpu_clk_sctx.cclk_divider, 1221 clk_base + SUPER_CCLK_DIVIDER); 1222 writel(tegra20_cpu_clk_sctx.cpu_burst, 1223 clk_base + CCLK_BURST_POLICY); 1224 1225 writel(tegra20_cpu_clk_sctx.clk_csite_src, 1226 clk_base + CLK_SOURCE_CSITE); 1227} 1228#endif 1229 1230static struct tegra_cpu_car_ops tegra20_cpu_car_ops = { 1231 .wait_for_reset = tegra20_wait_cpu_in_reset, 1232 .put_in_reset = tegra20_put_cpu_in_reset, 1233 .out_of_reset = tegra20_cpu_out_of_reset, 1234 .enable_clock = tegra20_enable_cpu_clock, 1235 .disable_clock = tegra20_disable_cpu_clock, 1236#ifdef CONFIG_PM_SLEEP 1237 .rail_off_ready = tegra20_cpu_rail_off_ready, 1238 .suspend = tegra20_cpu_clock_suspend, 1239 .resume = tegra20_cpu_clock_resume, 1240#endif 1241}; 1242 1243static __initdata struct tegra_clk_init_table init_table[] = { 1244 {pll_p, clk_max, 216000000, 1}, 1245 {pll_p_out1, clk_max, 28800000, 1}, 1246 {pll_p_out2, clk_max, 48000000, 1}, 1247 {pll_p_out3, clk_max, 72000000, 1}, 1248 {pll_p_out4, clk_max, 24000000, 1}, 1249 {pll_c, clk_max, 600000000, 1}, 1250 {pll_c_out1, clk_max, 120000000, 1}, 1251 {sclk, pll_c_out1, 0, 1}, 1252 {hclk, clk_max, 0, 1}, 1253 {pclk, clk_max, 60000000, 1}, 1254 {csite, clk_max, 0, 1}, 1255 {emc, clk_max, 0, 1}, 1256 {cclk, clk_max, 0, 1}, 1257 {uarta, pll_p, 0, 1}, 1258 {uartd, pll_p, 0, 1}, 1259 {usbd, clk_max, 12000000, 0}, 1260 {usb2, clk_max, 12000000, 0}, 1261 {usb3, clk_max, 12000000, 0}, 1262 {pll_a, clk_max, 56448000, 1}, 1263 {pll_a_out0, clk_max, 11289600, 1}, 1264 {cdev1, clk_max, 0, 1}, 1265 {blink, clk_max, 32768, 1}, 1266 {i2s1, pll_a_out0, 11289600, 0}, 1267 {i2s2, pll_a_out0, 11289600, 0}, 1268 {sdmmc1, pll_p, 48000000, 0}, 1269 {sdmmc3, pll_p, 48000000, 0}, 1270 {sdmmc4, pll_p, 48000000, 0}, 1271 {spi, pll_p, 20000000, 0}, 1272 {sbc1, pll_p, 100000000, 0}, 1273 {sbc2, pll_p, 100000000, 0}, 1274 {sbc3, pll_p, 100000000, 0}, 1275 {sbc4, pll_p, 100000000, 0}, 1276 {host1x, pll_c, 150000000, 0}, 1277 {disp1, pll_p, 600000000, 0}, 1278 {disp2, pll_p, 600000000, 0}, 1279 {clk_max, clk_max, 0, 0}, /* This MUST be the last entry */ 1280}; 1281 1282/* 1283 * Some clocks may be used by different drivers depending on the board 1284 * configuration. List those here to register them twice in the clock lookup 1285 * table under two names. 1286 */ 1287static struct tegra_clk_duplicate tegra_clk_duplicates[] = { 1288 TEGRA_CLK_DUPLICATE(usbd, "utmip-pad", NULL), 1289 TEGRA_CLK_DUPLICATE(usbd, "tegra-ehci.0", NULL), 1290 TEGRA_CLK_DUPLICATE(usbd, "tegra-otg", NULL), 1291 TEGRA_CLK_DUPLICATE(cclk, NULL, "cpu"), 1292 TEGRA_CLK_DUPLICATE(twd, "smp_twd", NULL), 1293 TEGRA_CLK_DUPLICATE(clk_max, NULL, NULL), /* Must be the last entry */ 1294}; 1295 1296static const struct of_device_id pmc_match[] __initconst = { 1297 { .compatible = "nvidia,tegra20-pmc" }, 1298 {}, 1299}; 1300 1301void __init tegra20_clock_init(struct device_node *np) 1302{ 1303 int i; 1304 struct device_node *node; 1305 1306 clk_base = of_iomap(np, 0); 1307 if (!clk_base) { 1308 pr_err("Can't map CAR registers\n"); 1309 BUG(); 1310 } 1311 1312 node = of_find_matching_node(NULL, pmc_match); 1313 if (!node) { 1314 pr_err("Failed to find pmc node\n"); 1315 BUG(); 1316 } 1317 1318 pmc_base = of_iomap(node, 0); 1319 if (!pmc_base) { 1320 pr_err("Can't map pmc registers\n"); 1321 BUG(); 1322 } 1323 1324 tegra20_osc_clk_init(); 1325 tegra20_pmc_clk_init(); 1326 tegra20_fixed_clk_init(); 1327 tegra20_pll_init(); 1328 tegra20_super_clk_init(); 1329 tegra20_periph_clk_init(); 1330 tegra20_audio_clk_init(); 1331 1332 1333 for (i = 0; i < ARRAY_SIZE(clks); i++) { 1334 if (IS_ERR(clks[i])) { 1335 pr_err("Tegra20 clk %d: register failed with %ld\n", 1336 i, PTR_ERR(clks[i])); 1337 BUG(); 1338 } 1339 if (!clks[i]) 1340 clks[i] = ERR_PTR(-EINVAL); 1341 } 1342 1343 tegra_init_dup_clks(tegra_clk_duplicates, clks, clk_max); 1344 1345 clk_data.clks = clks; 1346 clk_data.clk_num = ARRAY_SIZE(clks); 1347 of_clk_add_provider(np, of_clk_src_onecell_get, &clk_data); 1348 1349 tegra_init_from_table(init_table, clks, clk_max); 1350 1351 tegra_cpu_car_ops = &tegra20_cpu_car_ops; 1352} 1353