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-provider.h> 19 #include <linux/clkdev.h> 20 #include <linux/of.h> 21 #include <linux/of_address.h> 22 #include <linux/clk/tegra.h> 23 #include <linux/delay.h> 24 #include <dt-bindings/clock/tegra20-car.h> 25 26 #include "clk.h" 27 #include "clk-id.h" 28 29 #define OSC_CTRL 0x50 30 #define OSC_CTRL_OSC_FREQ_MASK (3<<30) 31 #define OSC_CTRL_OSC_FREQ_13MHZ (0<<30) 32 #define OSC_CTRL_OSC_FREQ_19_2MHZ (1<<30) 33 #define OSC_CTRL_OSC_FREQ_12MHZ (2<<30) 34 #define OSC_CTRL_OSC_FREQ_26MHZ (3<<30) 35 #define OSC_CTRL_MASK (0x3f2 | OSC_CTRL_OSC_FREQ_MASK) 36 37 #define OSC_CTRL_PLL_REF_DIV_MASK (3<<28) 38 #define OSC_CTRL_PLL_REF_DIV_1 (0<<28) 39 #define OSC_CTRL_PLL_REF_DIV_2 (1<<28) 40 #define OSC_CTRL_PLL_REF_DIV_4 (2<<28) 41 42 #define OSC_FREQ_DET 0x58 43 #define OSC_FREQ_DET_TRIG (1<<31) 44 45 #define OSC_FREQ_DET_STATUS 0x5c 46 #define OSC_FREQ_DET_BUSY (1<<31) 47 #define OSC_FREQ_DET_CNT_MASK 0xFFFF 48 49 #define TEGRA20_CLK_PERIPH_BANKS 3 50 51 #define PLLS_BASE 0xf0 52 #define PLLS_MISC 0xf4 53 #define PLLC_BASE 0x80 54 #define PLLC_MISC 0x8c 55 #define PLLM_BASE 0x90 56 #define PLLM_MISC 0x9c 57 #define PLLP_BASE 0xa0 58 #define PLLP_MISC 0xac 59 #define PLLA_BASE 0xb0 60 #define PLLA_MISC 0xbc 61 #define PLLU_BASE 0xc0 62 #define PLLU_MISC 0xcc 63 #define PLLD_BASE 0xd0 64 #define PLLD_MISC 0xdc 65 #define PLLX_BASE 0xe0 66 #define PLLX_MISC 0xe4 67 #define PLLE_BASE 0xe8 68 #define PLLE_MISC 0xec 69 70 #define PLL_BASE_LOCK BIT(27) 71 #define PLLE_MISC_LOCK BIT(11) 72 73 #define PLL_MISC_LOCK_ENABLE 18 74 #define PLLDU_MISC_LOCK_ENABLE 22 75 #define PLLE_MISC_LOCK_ENABLE 9 76 77 #define PLLC_OUT 0x84 78 #define PLLM_OUT 0x94 79 #define PLLP_OUTA 0xa4 80 #define PLLP_OUTB 0xa8 81 #define PLLA_OUT 0xb4 82 83 #define CCLK_BURST_POLICY 0x20 84 #define SUPER_CCLK_DIVIDER 0x24 85 #define SCLK_BURST_POLICY 0x28 86 #define SUPER_SCLK_DIVIDER 0x2c 87 #define CLK_SYSTEM_RATE 0x30 88 89 #define CCLK_BURST_POLICY_SHIFT 28 90 #define CCLK_RUN_POLICY_SHIFT 4 91 #define CCLK_IDLE_POLICY_SHIFT 0 92 #define CCLK_IDLE_POLICY 1 93 #define CCLK_RUN_POLICY 2 94 #define CCLK_BURST_POLICY_PLLX 8 95 96 #define CLK_SOURCE_I2S1 0x100 97 #define CLK_SOURCE_I2S2 0x104 98 #define CLK_SOURCE_PWM 0x110 99 #define CLK_SOURCE_SPI 0x114 100 #define CLK_SOURCE_XIO 0x120 101 #define CLK_SOURCE_TWC 0x12c 102 #define CLK_SOURCE_IDE 0x144 103 #define CLK_SOURCE_HDMI 0x18c 104 #define CLK_SOURCE_DISP1 0x138 105 #define CLK_SOURCE_DISP2 0x13c 106 #define CLK_SOURCE_CSITE 0x1d4 107 #define CLK_SOURCE_I2C1 0x124 108 #define CLK_SOURCE_I2C2 0x198 109 #define CLK_SOURCE_I2C3 0x1b8 110 #define CLK_SOURCE_DVC 0x128 111 #define CLK_SOURCE_UARTA 0x178 112 #define CLK_SOURCE_UARTB 0x17c 113 #define CLK_SOURCE_UARTC 0x1a0 114 #define CLK_SOURCE_UARTD 0x1c0 115 #define CLK_SOURCE_UARTE 0x1c4 116 #define CLK_SOURCE_EMC 0x19c 117 118 #define AUDIO_SYNC_CLK 0x38 119 120 /* Tegra CPU clock and reset control regs */ 121 #define TEGRA_CLK_RST_CONTROLLER_CLK_CPU_CMPLX 0x4c 122 #define TEGRA_CLK_RST_CONTROLLER_RST_CPU_CMPLX_SET 0x340 123 #define TEGRA_CLK_RST_CONTROLLER_RST_CPU_CMPLX_CLR 0x344 124 125 #define CPU_CLOCK(cpu) (0x1 << (8 + cpu)) 126 #define CPU_RESET(cpu) (0x1111ul << (cpu)) 127 128 #ifdef CONFIG_PM_SLEEP 129 static struct cpu_clk_suspend_context { 130 u32 pllx_misc; 131 u32 pllx_base; 132 133 u32 cpu_burst; 134 u32 clk_csite_src; 135 u32 cclk_divider; 136 } tegra20_cpu_clk_sctx; 137 #endif 138 139 static void __iomem *clk_base; 140 static void __iomem *pmc_base; 141 142 static DEFINE_SPINLOCK(emc_lock); 143 144 #define TEGRA_INIT_DATA_MUX(_name, _parents, _offset, \ 145 _clk_num, _gate_flags, _clk_id) \ 146 TEGRA_INIT_DATA(_name, NULL, NULL, _parents, _offset, \ 147 30, 2, 0, 0, 8, 1, TEGRA_DIVIDER_ROUND_UP, \ 148 _clk_num, \ 149 _gate_flags, _clk_id) 150 151 #define TEGRA_INIT_DATA_DIV16(_name, _parents, _offset, \ 152 _clk_num, _gate_flags, _clk_id) \ 153 TEGRA_INIT_DATA(_name, NULL, NULL, _parents, _offset, \ 154 30, 2, 0, 0, 16, 0, TEGRA_DIVIDER_ROUND_UP, \ 155 _clk_num, _gate_flags, \ 156 _clk_id) 157 158 #define TEGRA_INIT_DATA_NODIV(_name, _parents, _offset, \ 159 _mux_shift, _mux_width, _clk_num, \ 160 _gate_flags, _clk_id) \ 161 TEGRA_INIT_DATA(_name, NULL, NULL, _parents, _offset, \ 162 _mux_shift, _mux_width, 0, 0, 0, 0, 0, \ 163 _clk_num, _gate_flags, \ 164 _clk_id) 165 166 static struct clk **clks; 167 168 static struct tegra_clk_pll_freq_table pll_c_freq_table[] = { 169 { 12000000, 600000000, 600, 12, 1, 8 }, 170 { 13000000, 600000000, 600, 13, 1, 8 }, 171 { 19200000, 600000000, 500, 16, 1, 6 }, 172 { 26000000, 600000000, 600, 26, 1, 8 }, 173 { 0, 0, 0, 0, 0, 0 }, 174 }; 175 176 static struct tegra_clk_pll_freq_table pll_m_freq_table[] = { 177 { 12000000, 666000000, 666, 12, 1, 8 }, 178 { 13000000, 666000000, 666, 13, 1, 8 }, 179 { 19200000, 666000000, 555, 16, 1, 8 }, 180 { 26000000, 666000000, 666, 26, 1, 8 }, 181 { 12000000, 600000000, 600, 12, 1, 8 }, 182 { 13000000, 600000000, 600, 13, 1, 8 }, 183 { 19200000, 600000000, 375, 12, 1, 6 }, 184 { 26000000, 600000000, 600, 26, 1, 8 }, 185 { 0, 0, 0, 0, 0, 0 }, 186 }; 187 188 static struct tegra_clk_pll_freq_table pll_p_freq_table[] = { 189 { 12000000, 216000000, 432, 12, 2, 8 }, 190 { 13000000, 216000000, 432, 13, 2, 8 }, 191 { 19200000, 216000000, 90, 4, 2, 1 }, 192 { 26000000, 216000000, 432, 26, 2, 8 }, 193 { 12000000, 432000000, 432, 12, 1, 8 }, 194 { 13000000, 432000000, 432, 13, 1, 8 }, 195 { 19200000, 432000000, 90, 4, 1, 1 }, 196 { 26000000, 432000000, 432, 26, 1, 8 }, 197 { 0, 0, 0, 0, 0, 0 }, 198 }; 199 200 static struct tegra_clk_pll_freq_table pll_a_freq_table[] = { 201 { 28800000, 56448000, 49, 25, 1, 1 }, 202 { 28800000, 73728000, 64, 25, 1, 1 }, 203 { 28800000, 24000000, 5, 6, 1, 1 }, 204 { 0, 0, 0, 0, 0, 0 }, 205 }; 206 207 static struct tegra_clk_pll_freq_table pll_d_freq_table[] = { 208 { 12000000, 216000000, 216, 12, 1, 4 }, 209 { 13000000, 216000000, 216, 13, 1, 4 }, 210 { 19200000, 216000000, 135, 12, 1, 3 }, 211 { 26000000, 216000000, 216, 26, 1, 4 }, 212 { 12000000, 594000000, 594, 12, 1, 8 }, 213 { 13000000, 594000000, 594, 13, 1, 8 }, 214 { 19200000, 594000000, 495, 16, 1, 8 }, 215 { 26000000, 594000000, 594, 26, 1, 8 }, 216 { 12000000, 1000000000, 1000, 12, 1, 12 }, 217 { 13000000, 1000000000, 1000, 13, 1, 12 }, 218 { 19200000, 1000000000, 625, 12, 1, 8 }, 219 { 26000000, 1000000000, 1000, 26, 1, 12 }, 220 { 0, 0, 0, 0, 0, 0 }, 221 }; 222 223 static struct tegra_clk_pll_freq_table pll_u_freq_table[] = { 224 { 12000000, 480000000, 960, 12, 1, 0 }, 225 { 13000000, 480000000, 960, 13, 1, 0 }, 226 { 19200000, 480000000, 200, 4, 1, 0 }, 227 { 26000000, 480000000, 960, 26, 1, 0 }, 228 { 0, 0, 0, 0, 0, 0 }, 229 }; 230 231 static struct tegra_clk_pll_freq_table pll_x_freq_table[] = { 232 /* 1 GHz */ 233 { 12000000, 1000000000, 1000, 12, 1, 12 }, 234 { 13000000, 1000000000, 1000, 13, 1, 12 }, 235 { 19200000, 1000000000, 625, 12, 1, 8 }, 236 { 26000000, 1000000000, 1000, 26, 1, 12 }, 237 /* 912 MHz */ 238 { 12000000, 912000000, 912, 12, 1, 12 }, 239 { 13000000, 912000000, 912, 13, 1, 12 }, 240 { 19200000, 912000000, 760, 16, 1, 8 }, 241 { 26000000, 912000000, 912, 26, 1, 12 }, 242 /* 816 MHz */ 243 { 12000000, 816000000, 816, 12, 1, 12 }, 244 { 13000000, 816000000, 816, 13, 1, 12 }, 245 { 19200000, 816000000, 680, 16, 1, 8 }, 246 { 26000000, 816000000, 816, 26, 1, 12 }, 247 /* 760 MHz */ 248 { 12000000, 760000000, 760, 12, 1, 12 }, 249 { 13000000, 760000000, 760, 13, 1, 12 }, 250 { 19200000, 760000000, 950, 24, 1, 8 }, 251 { 26000000, 760000000, 760, 26, 1, 12 }, 252 /* 750 MHz */ 253 { 12000000, 750000000, 750, 12, 1, 12 }, 254 { 13000000, 750000000, 750, 13, 1, 12 }, 255 { 19200000, 750000000, 625, 16, 1, 8 }, 256 { 26000000, 750000000, 750, 26, 1, 12 }, 257 /* 608 MHz */ 258 { 12000000, 608000000, 608, 12, 1, 12 }, 259 { 13000000, 608000000, 608, 13, 1, 12 }, 260 { 19200000, 608000000, 380, 12, 1, 8 }, 261 { 26000000, 608000000, 608, 26, 1, 12 }, 262 /* 456 MHz */ 263 { 12000000, 456000000, 456, 12, 1, 12 }, 264 { 13000000, 456000000, 456, 13, 1, 12 }, 265 { 19200000, 456000000, 380, 16, 1, 8 }, 266 { 26000000, 456000000, 456, 26, 1, 12 }, 267 /* 312 MHz */ 268 { 12000000, 312000000, 312, 12, 1, 12 }, 269 { 13000000, 312000000, 312, 13, 1, 12 }, 270 { 19200000, 312000000, 260, 16, 1, 8 }, 271 { 26000000, 312000000, 312, 26, 1, 12 }, 272 { 0, 0, 0, 0, 0, 0 }, 273 }; 274 275 static const struct pdiv_map plle_p[] = { 276 { .pdiv = 1, .hw_val = 1 }, 277 { .pdiv = 0, .hw_val = 0 }, 278 }; 279 280 static struct tegra_clk_pll_freq_table pll_e_freq_table[] = { 281 { 12000000, 100000000, 200, 24, 1, 0 }, 282 { 0, 0, 0, 0, 0, 0 }, 283 }; 284 285 /* PLL parameters */ 286 static struct tegra_clk_pll_params pll_c_params = { 287 .input_min = 2000000, 288 .input_max = 31000000, 289 .cf_min = 1000000, 290 .cf_max = 6000000, 291 .vco_min = 20000000, 292 .vco_max = 1400000000, 293 .base_reg = PLLC_BASE, 294 .misc_reg = PLLC_MISC, 295 .lock_mask = PLL_BASE_LOCK, 296 .lock_enable_bit_idx = PLL_MISC_LOCK_ENABLE, 297 .lock_delay = 300, 298 .freq_table = pll_c_freq_table, 299 .flags = TEGRA_PLL_HAS_CPCON | TEGRA_PLL_HAS_LOCK_ENABLE, 300 }; 301 302 static struct tegra_clk_pll_params pll_m_params = { 303 .input_min = 2000000, 304 .input_max = 31000000, 305 .cf_min = 1000000, 306 .cf_max = 6000000, 307 .vco_min = 20000000, 308 .vco_max = 1200000000, 309 .base_reg = PLLM_BASE, 310 .misc_reg = PLLM_MISC, 311 .lock_mask = PLL_BASE_LOCK, 312 .lock_enable_bit_idx = PLL_MISC_LOCK_ENABLE, 313 .lock_delay = 300, 314 .freq_table = pll_m_freq_table, 315 .flags = TEGRA_PLL_HAS_CPCON | TEGRA_PLL_HAS_LOCK_ENABLE, 316 }; 317 318 static struct tegra_clk_pll_params pll_p_params = { 319 .input_min = 2000000, 320 .input_max = 31000000, 321 .cf_min = 1000000, 322 .cf_max = 6000000, 323 .vco_min = 20000000, 324 .vco_max = 1400000000, 325 .base_reg = PLLP_BASE, 326 .misc_reg = PLLP_MISC, 327 .lock_mask = PLL_BASE_LOCK, 328 .lock_enable_bit_idx = PLL_MISC_LOCK_ENABLE, 329 .lock_delay = 300, 330 .freq_table = pll_p_freq_table, 331 .flags = TEGRA_PLL_FIXED | TEGRA_PLL_HAS_CPCON | 332 TEGRA_PLL_HAS_LOCK_ENABLE, 333 .fixed_rate = 216000000, 334 }; 335 336 static struct tegra_clk_pll_params pll_a_params = { 337 .input_min = 2000000, 338 .input_max = 31000000, 339 .cf_min = 1000000, 340 .cf_max = 6000000, 341 .vco_min = 20000000, 342 .vco_max = 1400000000, 343 .base_reg = PLLA_BASE, 344 .misc_reg = PLLA_MISC, 345 .lock_mask = PLL_BASE_LOCK, 346 .lock_enable_bit_idx = PLL_MISC_LOCK_ENABLE, 347 .lock_delay = 300, 348 .freq_table = pll_a_freq_table, 349 .flags = TEGRA_PLL_HAS_CPCON | TEGRA_PLL_HAS_LOCK_ENABLE, 350 }; 351 352 static struct tegra_clk_pll_params pll_d_params = { 353 .input_min = 2000000, 354 .input_max = 40000000, 355 .cf_min = 1000000, 356 .cf_max = 6000000, 357 .vco_min = 40000000, 358 .vco_max = 1000000000, 359 .base_reg = PLLD_BASE, 360 .misc_reg = PLLD_MISC, 361 .lock_mask = PLL_BASE_LOCK, 362 .lock_enable_bit_idx = PLLDU_MISC_LOCK_ENABLE, 363 .lock_delay = 1000, 364 .freq_table = pll_d_freq_table, 365 .flags = TEGRA_PLL_HAS_CPCON | TEGRA_PLL_HAS_LOCK_ENABLE, 366 }; 367 368 static const struct pdiv_map pllu_p[] = { 369 { .pdiv = 1, .hw_val = 1 }, 370 { .pdiv = 2, .hw_val = 0 }, 371 { .pdiv = 0, .hw_val = 0 }, 372 }; 373 374 static struct tegra_clk_pll_params pll_u_params = { 375 .input_min = 2000000, 376 .input_max = 40000000, 377 .cf_min = 1000000, 378 .cf_max = 6000000, 379 .vco_min = 48000000, 380 .vco_max = 960000000, 381 .base_reg = PLLU_BASE, 382 .misc_reg = PLLU_MISC, 383 .lock_mask = PLL_BASE_LOCK, 384 .lock_enable_bit_idx = PLLDU_MISC_LOCK_ENABLE, 385 .lock_delay = 1000, 386 .pdiv_tohw = pllu_p, 387 .freq_table = pll_u_freq_table, 388 .flags = TEGRA_PLLU | TEGRA_PLL_HAS_CPCON | TEGRA_PLL_HAS_LOCK_ENABLE, 389 }; 390 391 static struct tegra_clk_pll_params pll_x_params = { 392 .input_min = 2000000, 393 .input_max = 31000000, 394 .cf_min = 1000000, 395 .cf_max = 6000000, 396 .vco_min = 20000000, 397 .vco_max = 1200000000, 398 .base_reg = PLLX_BASE, 399 .misc_reg = PLLX_MISC, 400 .lock_mask = PLL_BASE_LOCK, 401 .lock_enable_bit_idx = PLL_MISC_LOCK_ENABLE, 402 .lock_delay = 300, 403 .freq_table = pll_x_freq_table, 404 .flags = TEGRA_PLL_HAS_CPCON | TEGRA_PLL_HAS_LOCK_ENABLE, 405 }; 406 407 static struct tegra_clk_pll_params pll_e_params = { 408 .input_min = 12000000, 409 .input_max = 12000000, 410 .cf_min = 0, 411 .cf_max = 0, 412 .vco_min = 0, 413 .vco_max = 0, 414 .base_reg = PLLE_BASE, 415 .misc_reg = PLLE_MISC, 416 .lock_mask = PLLE_MISC_LOCK, 417 .lock_enable_bit_idx = PLLE_MISC_LOCK_ENABLE, 418 .lock_delay = 0, 419 .pdiv_tohw = plle_p, 420 .freq_table = pll_e_freq_table, 421 .flags = TEGRA_PLL_FIXED | TEGRA_PLL_LOCK_MISC | 422 TEGRA_PLL_HAS_LOCK_ENABLE, 423 .fixed_rate = 100000000, 424 }; 425 426 static struct tegra_devclk devclks[] __initdata = { 427 { .con_id = "pll_c", .dt_id = TEGRA20_CLK_PLL_C }, 428 { .con_id = "pll_c_out1", .dt_id = TEGRA20_CLK_PLL_C_OUT1 }, 429 { .con_id = "pll_p", .dt_id = TEGRA20_CLK_PLL_P }, 430 { .con_id = "pll_p_out1", .dt_id = TEGRA20_CLK_PLL_P_OUT1 }, 431 { .con_id = "pll_p_out2", .dt_id = TEGRA20_CLK_PLL_P_OUT2 }, 432 { .con_id = "pll_p_out3", .dt_id = TEGRA20_CLK_PLL_P_OUT3 }, 433 { .con_id = "pll_p_out4", .dt_id = TEGRA20_CLK_PLL_P_OUT4 }, 434 { .con_id = "pll_m", .dt_id = TEGRA20_CLK_PLL_M }, 435 { .con_id = "pll_m_out1", .dt_id = TEGRA20_CLK_PLL_M_OUT1 }, 436 { .con_id = "pll_x", .dt_id = TEGRA20_CLK_PLL_X }, 437 { .con_id = "pll_u", .dt_id = TEGRA20_CLK_PLL_U }, 438 { .con_id = "pll_d", .dt_id = TEGRA20_CLK_PLL_D }, 439 { .con_id = "pll_d_out0", .dt_id = TEGRA20_CLK_PLL_D_OUT0 }, 440 { .con_id = "pll_a", .dt_id = TEGRA20_CLK_PLL_A }, 441 { .con_id = "pll_a_out0", .dt_id = TEGRA20_CLK_PLL_A_OUT0 }, 442 { .con_id = "pll_e", .dt_id = TEGRA20_CLK_PLL_E }, 443 { .con_id = "cclk", .dt_id = TEGRA20_CLK_CCLK }, 444 { .con_id = "sclk", .dt_id = TEGRA20_CLK_SCLK }, 445 { .con_id = "hclk", .dt_id = TEGRA20_CLK_HCLK }, 446 { .con_id = "pclk", .dt_id = TEGRA20_CLK_PCLK }, 447 { .con_id = "fuse", .dt_id = TEGRA20_CLK_FUSE }, 448 { .con_id = "twd", .dt_id = TEGRA20_CLK_TWD }, 449 { .con_id = "audio", .dt_id = TEGRA20_CLK_AUDIO }, 450 { .con_id = "audio_2x", .dt_id = TEGRA20_CLK_AUDIO_2X }, 451 { .dev_id = "tegra20-ac97", .dt_id = TEGRA20_CLK_AC97 }, 452 { .dev_id = "tegra-apbdma", .dt_id = TEGRA20_CLK_APBDMA }, 453 { .dev_id = "rtc-tegra", .dt_id = TEGRA20_CLK_RTC }, 454 { .dev_id = "timer", .dt_id = TEGRA20_CLK_TIMER }, 455 { .dev_id = "tegra-kbc", .dt_id = TEGRA20_CLK_KBC }, 456 { .con_id = "csus", .dev_id = "tegra_camera", .dt_id = TEGRA20_CLK_CSUS }, 457 { .con_id = "vcp", .dev_id = "tegra-avp", .dt_id = TEGRA20_CLK_VCP }, 458 { .con_id = "bsea", .dev_id = "tegra-avp", .dt_id = TEGRA20_CLK_BSEA }, 459 { .con_id = "bsev", .dev_id = "tegra-aes", .dt_id = TEGRA20_CLK_BSEV }, 460 { .con_id = "emc", .dt_id = TEGRA20_CLK_EMC }, 461 { .dev_id = "fsl-tegra-udc", .dt_id = TEGRA20_CLK_USBD }, 462 { .dev_id = "tegra-ehci.1", .dt_id = TEGRA20_CLK_USB2 }, 463 { .dev_id = "tegra-ehci.2", .dt_id = TEGRA20_CLK_USB3 }, 464 { .dev_id = "dsi", .dt_id = TEGRA20_CLK_DSI }, 465 { .con_id = "csi", .dev_id = "tegra_camera", .dt_id = TEGRA20_CLK_CSI }, 466 { .con_id = "isp", .dev_id = "tegra_camera", .dt_id = TEGRA20_CLK_ISP }, 467 { .con_id = "pex", .dt_id = TEGRA20_CLK_PEX }, 468 { .con_id = "afi", .dt_id = TEGRA20_CLK_AFI }, 469 { .con_id = "cdev1", .dt_id = TEGRA20_CLK_CDEV1 }, 470 { .con_id = "cdev2", .dt_id = TEGRA20_CLK_CDEV2 }, 471 { .con_id = "clk_32k", .dt_id = TEGRA20_CLK_CLK_32K }, 472 { .con_id = "blink", .dt_id = TEGRA20_CLK_BLINK }, 473 { .con_id = "clk_m", .dt_id = TEGRA20_CLK_CLK_M }, 474 { .con_id = "pll_ref", .dt_id = TEGRA20_CLK_PLL_REF }, 475 { .dev_id = "tegra20-i2s.0", .dt_id = TEGRA20_CLK_I2S1 }, 476 { .dev_id = "tegra20-i2s.1", .dt_id = TEGRA20_CLK_I2S2 }, 477 { .con_id = "spdif_out", .dev_id = "tegra20-spdif", .dt_id = TEGRA20_CLK_SPDIF_OUT }, 478 { .con_id = "spdif_in", .dev_id = "tegra20-spdif", .dt_id = TEGRA20_CLK_SPDIF_IN }, 479 { .dev_id = "spi_tegra.0", .dt_id = TEGRA20_CLK_SBC1 }, 480 { .dev_id = "spi_tegra.1", .dt_id = TEGRA20_CLK_SBC2 }, 481 { .dev_id = "spi_tegra.2", .dt_id = TEGRA20_CLK_SBC3 }, 482 { .dev_id = "spi_tegra.3", .dt_id = TEGRA20_CLK_SBC4 }, 483 { .dev_id = "spi", .dt_id = TEGRA20_CLK_SPI }, 484 { .dev_id = "xio", .dt_id = TEGRA20_CLK_XIO }, 485 { .dev_id = "twc", .dt_id = TEGRA20_CLK_TWC }, 486 { .dev_id = "ide", .dt_id = TEGRA20_CLK_IDE }, 487 { .dev_id = "tegra_nand", .dt_id = TEGRA20_CLK_NDFLASH }, 488 { .dev_id = "vfir", .dt_id = TEGRA20_CLK_VFIR }, 489 { .dev_id = "csite", .dt_id = TEGRA20_CLK_CSITE }, 490 { .dev_id = "la", .dt_id = TEGRA20_CLK_LA }, 491 { .dev_id = "tegra_w1", .dt_id = TEGRA20_CLK_OWR }, 492 { .dev_id = "mipi", .dt_id = TEGRA20_CLK_MIPI }, 493 { .dev_id = "vde", .dt_id = TEGRA20_CLK_VDE }, 494 { .con_id = "vi", .dev_id = "tegra_camera", .dt_id = TEGRA20_CLK_VI }, 495 { .dev_id = "epp", .dt_id = TEGRA20_CLK_EPP }, 496 { .dev_id = "mpe", .dt_id = TEGRA20_CLK_MPE }, 497 { .dev_id = "host1x", .dt_id = TEGRA20_CLK_HOST1X }, 498 { .dev_id = "3d", .dt_id = TEGRA20_CLK_GR3D }, 499 { .dev_id = "2d", .dt_id = TEGRA20_CLK_GR2D }, 500 { .dev_id = "tegra-nor", .dt_id = TEGRA20_CLK_NOR }, 501 { .dev_id = "sdhci-tegra.0", .dt_id = TEGRA20_CLK_SDMMC1 }, 502 { .dev_id = "sdhci-tegra.1", .dt_id = TEGRA20_CLK_SDMMC2 }, 503 { .dev_id = "sdhci-tegra.2", .dt_id = TEGRA20_CLK_SDMMC3 }, 504 { .dev_id = "sdhci-tegra.3", .dt_id = TEGRA20_CLK_SDMMC4 }, 505 { .dev_id = "cve", .dt_id = TEGRA20_CLK_CVE }, 506 { .dev_id = "tvo", .dt_id = TEGRA20_CLK_TVO }, 507 { .dev_id = "tvdac", .dt_id = TEGRA20_CLK_TVDAC }, 508 { .con_id = "vi_sensor", .dev_id = "tegra_camera", .dt_id = TEGRA20_CLK_VI_SENSOR }, 509 { .dev_id = "hdmi", .dt_id = TEGRA20_CLK_HDMI }, 510 { .con_id = "div-clk", .dev_id = "tegra-i2c.0", .dt_id = TEGRA20_CLK_I2C1 }, 511 { .con_id = "div-clk", .dev_id = "tegra-i2c.1", .dt_id = TEGRA20_CLK_I2C2 }, 512 { .con_id = "div-clk", .dev_id = "tegra-i2c.2", .dt_id = TEGRA20_CLK_I2C3 }, 513 { .con_id = "div-clk", .dev_id = "tegra-i2c.3", .dt_id = TEGRA20_CLK_DVC }, 514 { .dev_id = "tegra-pwm", .dt_id = TEGRA20_CLK_PWM }, 515 { .dev_id = "tegra_uart.0", .dt_id = TEGRA20_CLK_UARTA }, 516 { .dev_id = "tegra_uart.1", .dt_id = TEGRA20_CLK_UARTB }, 517 { .dev_id = "tegra_uart.2", .dt_id = TEGRA20_CLK_UARTC }, 518 { .dev_id = "tegra_uart.3", .dt_id = TEGRA20_CLK_UARTD }, 519 { .dev_id = "tegra_uart.4", .dt_id = TEGRA20_CLK_UARTE }, 520 { .dev_id = "tegradc.0", .dt_id = TEGRA20_CLK_DISP1 }, 521 { .dev_id = "tegradc.1", .dt_id = TEGRA20_CLK_DISP2 }, 522 }; 523 524 static struct tegra_clk tegra20_clks[tegra_clk_max] __initdata = { 525 [tegra_clk_spdif_out] = { .dt_id = TEGRA20_CLK_SPDIF_OUT, .present = true }, 526 [tegra_clk_spdif_in] = { .dt_id = TEGRA20_CLK_SPDIF_IN, .present = true }, 527 [tegra_clk_sdmmc1] = { .dt_id = TEGRA20_CLK_SDMMC1, .present = true }, 528 [tegra_clk_sdmmc2] = { .dt_id = TEGRA20_CLK_SDMMC2, .present = true }, 529 [tegra_clk_sdmmc3] = { .dt_id = TEGRA20_CLK_SDMMC3, .present = true }, 530 [tegra_clk_sdmmc4] = { .dt_id = TEGRA20_CLK_SDMMC4, .present = true }, 531 [tegra_clk_la] = { .dt_id = TEGRA20_CLK_LA, .present = true }, 532 [tegra_clk_csite] = { .dt_id = TEGRA20_CLK_CSITE, .present = true }, 533 [tegra_clk_vfir] = { .dt_id = TEGRA20_CLK_VFIR, .present = true }, 534 [tegra_clk_mipi] = { .dt_id = TEGRA20_CLK_MIPI, .present = true }, 535 [tegra_clk_nor] = { .dt_id = TEGRA20_CLK_NOR, .present = true }, 536 [tegra_clk_rtc] = { .dt_id = TEGRA20_CLK_RTC, .present = true }, 537 [tegra_clk_timer] = { .dt_id = TEGRA20_CLK_TIMER, .present = true }, 538 [tegra_clk_kbc] = { .dt_id = TEGRA20_CLK_KBC, .present = true }, 539 [tegra_clk_csus] = { .dt_id = TEGRA20_CLK_CSUS, .present = true }, 540 [tegra_clk_vcp] = { .dt_id = TEGRA20_CLK_VCP, .present = true }, 541 [tegra_clk_bsea] = { .dt_id = TEGRA20_CLK_BSEA, .present = true }, 542 [tegra_clk_bsev] = { .dt_id = TEGRA20_CLK_BSEV, .present = true }, 543 [tegra_clk_usbd] = { .dt_id = TEGRA20_CLK_USBD, .present = true }, 544 [tegra_clk_usb2] = { .dt_id = TEGRA20_CLK_USB2, .present = true }, 545 [tegra_clk_usb3] = { .dt_id = TEGRA20_CLK_USB3, .present = true }, 546 [tegra_clk_csi] = { .dt_id = TEGRA20_CLK_CSI, .present = true }, 547 [tegra_clk_isp] = { .dt_id = TEGRA20_CLK_ISP, .present = true }, 548 [tegra_clk_clk_32k] = { .dt_id = TEGRA20_CLK_CLK_32K, .present = true }, 549 [tegra_clk_blink] = { .dt_id = TEGRA20_CLK_BLINK, .present = true }, 550 [tegra_clk_hclk] = { .dt_id = TEGRA20_CLK_HCLK, .present = true }, 551 [tegra_clk_pclk] = { .dt_id = TEGRA20_CLK_PCLK, .present = true }, 552 [tegra_clk_pll_p_out1] = { .dt_id = TEGRA20_CLK_PLL_P_OUT1, .present = true }, 553 [tegra_clk_pll_p_out2] = { .dt_id = TEGRA20_CLK_PLL_P_OUT2, .present = true }, 554 [tegra_clk_pll_p_out3] = { .dt_id = TEGRA20_CLK_PLL_P_OUT3, .present = true }, 555 [tegra_clk_pll_p_out4] = { .dt_id = TEGRA20_CLK_PLL_P_OUT4, .present = true }, 556 [tegra_clk_pll_p] = { .dt_id = TEGRA20_CLK_PLL_P, .present = true }, 557 [tegra_clk_owr] = { .dt_id = TEGRA20_CLK_OWR, .present = true }, 558 [tegra_clk_sbc1] = { .dt_id = TEGRA20_CLK_SBC1, .present = true }, 559 [tegra_clk_sbc2] = { .dt_id = TEGRA20_CLK_SBC2, .present = true }, 560 [tegra_clk_sbc3] = { .dt_id = TEGRA20_CLK_SBC3, .present = true }, 561 [tegra_clk_sbc4] = { .dt_id = TEGRA20_CLK_SBC4, .present = true }, 562 [tegra_clk_vde] = { .dt_id = TEGRA20_CLK_VDE, .present = true }, 563 [tegra_clk_vi] = { .dt_id = TEGRA20_CLK_VI, .present = true }, 564 [tegra_clk_epp] = { .dt_id = TEGRA20_CLK_EPP, .present = true }, 565 [tegra_clk_mpe] = { .dt_id = TEGRA20_CLK_MPE, .present = true }, 566 [tegra_clk_host1x] = { .dt_id = TEGRA20_CLK_HOST1X, .present = true }, 567 [tegra_clk_gr2d] = { .dt_id = TEGRA20_CLK_GR2D, .present = true }, 568 [tegra_clk_gr3d] = { .dt_id = TEGRA20_CLK_GR3D, .present = true }, 569 [tegra_clk_ndflash] = { .dt_id = TEGRA20_CLK_NDFLASH, .present = true }, 570 [tegra_clk_cve] = { .dt_id = TEGRA20_CLK_CVE, .present = true }, 571 [tegra_clk_tvo] = { .dt_id = TEGRA20_CLK_TVO, .present = true }, 572 [tegra_clk_tvdac] = { .dt_id = TEGRA20_CLK_TVDAC, .present = true }, 573 [tegra_clk_vi_sensor] = { .dt_id = TEGRA20_CLK_VI_SENSOR, .present = true }, 574 [tegra_clk_afi] = { .dt_id = TEGRA20_CLK_AFI, .present = true }, 575 [tegra_clk_fuse] = { .dt_id = TEGRA20_CLK_FUSE, .present = true }, 576 [tegra_clk_kfuse] = { .dt_id = TEGRA20_CLK_KFUSE, .present = true }, 577 }; 578 579 static unsigned long tegra20_clk_measure_input_freq(void) 580 { 581 u32 osc_ctrl = readl_relaxed(clk_base + OSC_CTRL); 582 u32 auto_clk_control = osc_ctrl & OSC_CTRL_OSC_FREQ_MASK; 583 u32 pll_ref_div = osc_ctrl & OSC_CTRL_PLL_REF_DIV_MASK; 584 unsigned long input_freq; 585 586 switch (auto_clk_control) { 587 case OSC_CTRL_OSC_FREQ_12MHZ: 588 BUG_ON(pll_ref_div != OSC_CTRL_PLL_REF_DIV_1); 589 input_freq = 12000000; 590 break; 591 case OSC_CTRL_OSC_FREQ_13MHZ: 592 BUG_ON(pll_ref_div != OSC_CTRL_PLL_REF_DIV_1); 593 input_freq = 13000000; 594 break; 595 case OSC_CTRL_OSC_FREQ_19_2MHZ: 596 BUG_ON(pll_ref_div != OSC_CTRL_PLL_REF_DIV_1); 597 input_freq = 19200000; 598 break; 599 case OSC_CTRL_OSC_FREQ_26MHZ: 600 BUG_ON(pll_ref_div != OSC_CTRL_PLL_REF_DIV_1); 601 input_freq = 26000000; 602 break; 603 default: 604 pr_err("Unexpected clock autodetect value %d", 605 auto_clk_control); 606 BUG(); 607 return 0; 608 } 609 610 return input_freq; 611 } 612 613 static unsigned int tegra20_get_pll_ref_div(void) 614 { 615 u32 pll_ref_div = readl_relaxed(clk_base + OSC_CTRL) & 616 OSC_CTRL_PLL_REF_DIV_MASK; 617 618 switch (pll_ref_div) { 619 case OSC_CTRL_PLL_REF_DIV_1: 620 return 1; 621 case OSC_CTRL_PLL_REF_DIV_2: 622 return 2; 623 case OSC_CTRL_PLL_REF_DIV_4: 624 return 4; 625 default: 626 pr_err("Invalid pll ref divider %d\n", pll_ref_div); 627 BUG(); 628 } 629 return 0; 630 } 631 632 static void tegra20_pll_init(void) 633 { 634 struct clk *clk; 635 636 /* PLLC */ 637 clk = tegra_clk_register_pll("pll_c", "pll_ref", clk_base, NULL, 0, 638 &pll_c_params, NULL); 639 clks[TEGRA20_CLK_PLL_C] = clk; 640 641 /* PLLC_OUT1 */ 642 clk = tegra_clk_register_divider("pll_c_out1_div", "pll_c", 643 clk_base + PLLC_OUT, 0, TEGRA_DIVIDER_ROUND_UP, 644 8, 8, 1, NULL); 645 clk = tegra_clk_register_pll_out("pll_c_out1", "pll_c_out1_div", 646 clk_base + PLLC_OUT, 1, 0, CLK_SET_RATE_PARENT, 647 0, NULL); 648 clks[TEGRA20_CLK_PLL_C_OUT1] = clk; 649 650 /* PLLM */ 651 clk = tegra_clk_register_pll("pll_m", "pll_ref", clk_base, NULL, 652 CLK_IGNORE_UNUSED | CLK_SET_RATE_GATE, 653 &pll_m_params, NULL); 654 clks[TEGRA20_CLK_PLL_M] = clk; 655 656 /* PLLM_OUT1 */ 657 clk = tegra_clk_register_divider("pll_m_out1_div", "pll_m", 658 clk_base + PLLM_OUT, 0, TEGRA_DIVIDER_ROUND_UP, 659 8, 8, 1, NULL); 660 clk = tegra_clk_register_pll_out("pll_m_out1", "pll_m_out1_div", 661 clk_base + PLLM_OUT, 1, 0, CLK_IGNORE_UNUSED | 662 CLK_SET_RATE_PARENT, 0, NULL); 663 clks[TEGRA20_CLK_PLL_M_OUT1] = clk; 664 665 /* PLLX */ 666 clk = tegra_clk_register_pll("pll_x", "pll_ref", clk_base, NULL, 0, 667 &pll_x_params, NULL); 668 clks[TEGRA20_CLK_PLL_X] = clk; 669 670 /* PLLU */ 671 clk = tegra_clk_register_pll("pll_u", "pll_ref", clk_base, NULL, 0, 672 &pll_u_params, NULL); 673 clks[TEGRA20_CLK_PLL_U] = clk; 674 675 /* PLLD */ 676 clk = tegra_clk_register_pll("pll_d", "pll_ref", clk_base, NULL, 0, 677 &pll_d_params, NULL); 678 clks[TEGRA20_CLK_PLL_D] = clk; 679 680 /* PLLD_OUT0 */ 681 clk = clk_register_fixed_factor(NULL, "pll_d_out0", "pll_d", 682 CLK_SET_RATE_PARENT, 1, 2); 683 clks[TEGRA20_CLK_PLL_D_OUT0] = clk; 684 685 /* PLLA */ 686 clk = tegra_clk_register_pll("pll_a", "pll_p_out1", clk_base, NULL, 0, 687 &pll_a_params, NULL); 688 clks[TEGRA20_CLK_PLL_A] = clk; 689 690 /* PLLA_OUT0 */ 691 clk = tegra_clk_register_divider("pll_a_out0_div", "pll_a", 692 clk_base + PLLA_OUT, 0, TEGRA_DIVIDER_ROUND_UP, 693 8, 8, 1, NULL); 694 clk = tegra_clk_register_pll_out("pll_a_out0", "pll_a_out0_div", 695 clk_base + PLLA_OUT, 1, 0, CLK_IGNORE_UNUSED | 696 CLK_SET_RATE_PARENT, 0, NULL); 697 clks[TEGRA20_CLK_PLL_A_OUT0] = clk; 698 699 /* PLLE */ 700 clk = tegra_clk_register_plle("pll_e", "pll_ref", clk_base, pmc_base, 701 0, &pll_e_params, NULL); 702 clks[TEGRA20_CLK_PLL_E] = clk; 703 } 704 705 static const char *cclk_parents[] = { "clk_m", "pll_c", "clk_32k", "pll_m", 706 "pll_p", "pll_p_out4", 707 "pll_p_out3", "clk_d", "pll_x" }; 708 static const char *sclk_parents[] = { "clk_m", "pll_c_out1", "pll_p_out4", 709 "pll_p_out3", "pll_p_out2", "clk_d", 710 "clk_32k", "pll_m_out1" }; 711 712 static void tegra20_super_clk_init(void) 713 { 714 struct clk *clk; 715 716 /* CCLK */ 717 clk = tegra_clk_register_super_mux("cclk", cclk_parents, 718 ARRAY_SIZE(cclk_parents), CLK_SET_RATE_PARENT, 719 clk_base + CCLK_BURST_POLICY, 0, 4, 0, 0, NULL); 720 clks[TEGRA20_CLK_CCLK] = clk; 721 722 /* SCLK */ 723 clk = tegra_clk_register_super_mux("sclk", sclk_parents, 724 ARRAY_SIZE(sclk_parents), CLK_SET_RATE_PARENT, 725 clk_base + SCLK_BURST_POLICY, 0, 4, 0, 0, NULL); 726 clks[TEGRA20_CLK_SCLK] = clk; 727 728 /* twd */ 729 clk = clk_register_fixed_factor(NULL, "twd", "cclk", 0, 1, 4); 730 clks[TEGRA20_CLK_TWD] = clk; 731 } 732 733 static const char *audio_parents[] = { "spdif_in", "i2s1", "i2s2", "unused", 734 "pll_a_out0", "unused", "unused", 735 "unused" }; 736 737 static void __init tegra20_audio_clk_init(void) 738 { 739 struct clk *clk; 740 741 /* audio */ 742 clk = clk_register_mux(NULL, "audio_mux", audio_parents, 743 ARRAY_SIZE(audio_parents), 744 CLK_SET_RATE_NO_REPARENT, 745 clk_base + AUDIO_SYNC_CLK, 0, 3, 0, NULL); 746 clk = clk_register_gate(NULL, "audio", "audio_mux", 0, 747 clk_base + AUDIO_SYNC_CLK, 4, 748 CLK_GATE_SET_TO_DISABLE, NULL); 749 clks[TEGRA20_CLK_AUDIO] = clk; 750 751 /* audio_2x */ 752 clk = clk_register_fixed_factor(NULL, "audio_doubler", "audio", 753 CLK_SET_RATE_PARENT, 2, 1); 754 clk = tegra_clk_register_periph_gate("audio_2x", "audio_doubler", 755 TEGRA_PERIPH_NO_RESET, clk_base, 756 CLK_SET_RATE_PARENT, 89, 757 periph_clk_enb_refcnt); 758 clks[TEGRA20_CLK_AUDIO_2X] = clk; 759 } 760 761 static const char *i2s1_parents[] = { "pll_a_out0", "audio_2x", "pll_p", 762 "clk_m" }; 763 static const char *i2s2_parents[] = { "pll_a_out0", "audio_2x", "pll_p", 764 "clk_m" }; 765 static const char *pwm_parents[] = { "pll_p", "pll_c", "audio", "clk_m", 766 "clk_32k" }; 767 static const char *mux_pllpcm_clkm[] = { "pll_p", "pll_c", "pll_m", "clk_m" }; 768 static const char *mux_pllpdc_clkm[] = { "pll_p", "pll_d_out0", "pll_c", 769 "clk_m" }; 770 static const char *mux_pllmcp_clkm[] = { "pll_m", "pll_c", "pll_p", "clk_m" }; 771 772 static struct tegra_periph_init_data tegra_periph_clk_list[] = { 773 TEGRA_INIT_DATA_MUX("i2s1", i2s1_parents, CLK_SOURCE_I2S1, 11, TEGRA_PERIPH_ON_APB, TEGRA20_CLK_I2S1), 774 TEGRA_INIT_DATA_MUX("i2s2", i2s2_parents, CLK_SOURCE_I2S2, 18, TEGRA_PERIPH_ON_APB, TEGRA20_CLK_I2S2), 775 TEGRA_INIT_DATA_MUX("spi", mux_pllpcm_clkm, CLK_SOURCE_SPI, 43, TEGRA_PERIPH_ON_APB, TEGRA20_CLK_SPI), 776 TEGRA_INIT_DATA_MUX("xio", mux_pllpcm_clkm, CLK_SOURCE_XIO, 45, 0, TEGRA20_CLK_XIO), 777 TEGRA_INIT_DATA_MUX("twc", mux_pllpcm_clkm, CLK_SOURCE_TWC, 16, TEGRA_PERIPH_ON_APB, TEGRA20_CLK_TWC), 778 TEGRA_INIT_DATA_MUX("ide", mux_pllpcm_clkm, CLK_SOURCE_XIO, 25, 0, TEGRA20_CLK_IDE), 779 TEGRA_INIT_DATA_DIV16("dvc", mux_pllpcm_clkm, CLK_SOURCE_DVC, 47, TEGRA_PERIPH_ON_APB, TEGRA20_CLK_DVC), 780 TEGRA_INIT_DATA_DIV16("i2c1", mux_pllpcm_clkm, CLK_SOURCE_I2C1, 12, TEGRA_PERIPH_ON_APB, TEGRA20_CLK_I2C1), 781 TEGRA_INIT_DATA_DIV16("i2c2", mux_pllpcm_clkm, CLK_SOURCE_I2C2, 54, TEGRA_PERIPH_ON_APB, TEGRA20_CLK_I2C2), 782 TEGRA_INIT_DATA_DIV16("i2c3", mux_pllpcm_clkm, CLK_SOURCE_I2C3, 67, TEGRA_PERIPH_ON_APB, TEGRA20_CLK_I2C3), 783 TEGRA_INIT_DATA_MUX("hdmi", mux_pllpdc_clkm, CLK_SOURCE_HDMI, 51, 0, TEGRA20_CLK_HDMI), 784 TEGRA_INIT_DATA("pwm", NULL, NULL, pwm_parents, CLK_SOURCE_PWM, 28, 3, 0, 0, 8, 1, 0, 17, TEGRA_PERIPH_ON_APB, TEGRA20_CLK_PWM), 785 }; 786 787 static struct tegra_periph_init_data tegra_periph_nodiv_clk_list[] = { 788 TEGRA_INIT_DATA_NODIV("uarta", mux_pllpcm_clkm, CLK_SOURCE_UARTA, 30, 2, 6, TEGRA_PERIPH_ON_APB, TEGRA20_CLK_UARTA), 789 TEGRA_INIT_DATA_NODIV("uartb", mux_pllpcm_clkm, CLK_SOURCE_UARTB, 30, 2, 7, TEGRA_PERIPH_ON_APB, TEGRA20_CLK_UARTB), 790 TEGRA_INIT_DATA_NODIV("uartc", mux_pllpcm_clkm, CLK_SOURCE_UARTC, 30, 2, 55, TEGRA_PERIPH_ON_APB, TEGRA20_CLK_UARTC), 791 TEGRA_INIT_DATA_NODIV("uartd", mux_pllpcm_clkm, CLK_SOURCE_UARTD, 30, 2, 65, TEGRA_PERIPH_ON_APB, TEGRA20_CLK_UARTD), 792 TEGRA_INIT_DATA_NODIV("uarte", mux_pllpcm_clkm, CLK_SOURCE_UARTE, 30, 2, 66, TEGRA_PERIPH_ON_APB, TEGRA20_CLK_UARTE), 793 TEGRA_INIT_DATA_NODIV("disp1", mux_pllpdc_clkm, CLK_SOURCE_DISP1, 30, 2, 27, 0, TEGRA20_CLK_DISP1), 794 TEGRA_INIT_DATA_NODIV("disp2", mux_pllpdc_clkm, CLK_SOURCE_DISP2, 30, 2, 26, 0, TEGRA20_CLK_DISP2), 795 }; 796 797 static void __init tegra20_periph_clk_init(void) 798 { 799 struct tegra_periph_init_data *data; 800 struct clk *clk; 801 unsigned int i; 802 803 /* ac97 */ 804 clk = tegra_clk_register_periph_gate("ac97", "pll_a_out0", 805 TEGRA_PERIPH_ON_APB, 806 clk_base, 0, 3, periph_clk_enb_refcnt); 807 clks[TEGRA20_CLK_AC97] = clk; 808 809 /* apbdma */ 810 clk = tegra_clk_register_periph_gate("apbdma", "pclk", 0, clk_base, 811 0, 34, periph_clk_enb_refcnt); 812 clks[TEGRA20_CLK_APBDMA] = clk; 813 814 /* emc */ 815 clk = clk_register_mux(NULL, "emc_mux", mux_pllmcp_clkm, 816 ARRAY_SIZE(mux_pllmcp_clkm), 817 CLK_SET_RATE_NO_REPARENT, 818 clk_base + CLK_SOURCE_EMC, 819 30, 2, 0, &emc_lock); 820 clk = tegra_clk_register_periph_gate("emc", "emc_mux", 0, clk_base, 0, 821 57, periph_clk_enb_refcnt); 822 clks[TEGRA20_CLK_EMC] = clk; 823 824 clk = tegra_clk_register_mc("mc", "emc_mux", clk_base + CLK_SOURCE_EMC, 825 &emc_lock); 826 clks[TEGRA20_CLK_MC] = clk; 827 828 /* dsi */ 829 clk = tegra_clk_register_periph_gate("dsi", "pll_d", 0, clk_base, 0, 830 48, periph_clk_enb_refcnt); 831 clk_register_clkdev(clk, NULL, "dsi"); 832 clks[TEGRA20_CLK_DSI] = clk; 833 834 /* pex */ 835 clk = tegra_clk_register_periph_gate("pex", "clk_m", 0, clk_base, 0, 70, 836 periph_clk_enb_refcnt); 837 clks[TEGRA20_CLK_PEX] = clk; 838 839 /* cdev1 */ 840 clk = clk_register_fixed_rate(NULL, "cdev1_fixed", NULL, 0, 26000000); 841 clk = tegra_clk_register_periph_gate("cdev1", "cdev1_fixed", 0, 842 clk_base, 0, 94, periph_clk_enb_refcnt); 843 clks[TEGRA20_CLK_CDEV1] = clk; 844 845 /* cdev2 */ 846 clk = clk_register_fixed_rate(NULL, "cdev2_fixed", NULL, 0, 26000000); 847 clk = tegra_clk_register_periph_gate("cdev2", "cdev2_fixed", 0, 848 clk_base, 0, 93, periph_clk_enb_refcnt); 849 clks[TEGRA20_CLK_CDEV2] = clk; 850 851 for (i = 0; i < ARRAY_SIZE(tegra_periph_clk_list); i++) { 852 data = &tegra_periph_clk_list[i]; 853 clk = tegra_clk_register_periph(data->name, data->p.parent_names, 854 data->num_parents, &data->periph, 855 clk_base, data->offset, data->flags); 856 clks[data->clk_id] = clk; 857 } 858 859 for (i = 0; i < ARRAY_SIZE(tegra_periph_nodiv_clk_list); i++) { 860 data = &tegra_periph_nodiv_clk_list[i]; 861 clk = tegra_clk_register_periph_nodiv(data->name, 862 data->p.parent_names, 863 data->num_parents, &data->periph, 864 clk_base, data->offset); 865 clks[data->clk_id] = clk; 866 } 867 868 tegra_periph_clk_init(clk_base, pmc_base, tegra20_clks, &pll_p_params); 869 } 870 871 static void __init tegra20_osc_clk_init(void) 872 { 873 struct clk *clk; 874 unsigned long input_freq; 875 unsigned int pll_ref_div; 876 877 input_freq = tegra20_clk_measure_input_freq(); 878 879 /* clk_m */ 880 clk = clk_register_fixed_rate(NULL, "clk_m", NULL, CLK_IGNORE_UNUSED, 881 input_freq); 882 clks[TEGRA20_CLK_CLK_M] = clk; 883 884 /* pll_ref */ 885 pll_ref_div = tegra20_get_pll_ref_div(); 886 clk = clk_register_fixed_factor(NULL, "pll_ref", "clk_m", 887 CLK_SET_RATE_PARENT, 1, pll_ref_div); 888 clks[TEGRA20_CLK_PLL_REF] = clk; 889 } 890 891 /* Tegra20 CPU clock and reset control functions */ 892 static void tegra20_wait_cpu_in_reset(u32 cpu) 893 { 894 unsigned int reg; 895 896 do { 897 reg = readl(clk_base + 898 TEGRA_CLK_RST_CONTROLLER_RST_CPU_CMPLX_SET); 899 cpu_relax(); 900 } while (!(reg & (1 << cpu))); /* check CPU been reset or not */ 901 902 return; 903 } 904 905 static void tegra20_put_cpu_in_reset(u32 cpu) 906 { 907 writel(CPU_RESET(cpu), 908 clk_base + TEGRA_CLK_RST_CONTROLLER_RST_CPU_CMPLX_SET); 909 dmb(); 910 } 911 912 static void tegra20_cpu_out_of_reset(u32 cpu) 913 { 914 writel(CPU_RESET(cpu), 915 clk_base + TEGRA_CLK_RST_CONTROLLER_RST_CPU_CMPLX_CLR); 916 wmb(); 917 } 918 919 static void tegra20_enable_cpu_clock(u32 cpu) 920 { 921 unsigned int reg; 922 923 reg = readl(clk_base + TEGRA_CLK_RST_CONTROLLER_CLK_CPU_CMPLX); 924 writel(reg & ~CPU_CLOCK(cpu), 925 clk_base + TEGRA_CLK_RST_CONTROLLER_CLK_CPU_CMPLX); 926 barrier(); 927 reg = readl(clk_base + TEGRA_CLK_RST_CONTROLLER_CLK_CPU_CMPLX); 928 } 929 930 static void tegra20_disable_cpu_clock(u32 cpu) 931 { 932 unsigned int reg; 933 934 reg = readl(clk_base + TEGRA_CLK_RST_CONTROLLER_CLK_CPU_CMPLX); 935 writel(reg | CPU_CLOCK(cpu), 936 clk_base + TEGRA_CLK_RST_CONTROLLER_CLK_CPU_CMPLX); 937 } 938 939 #ifdef CONFIG_PM_SLEEP 940 static bool tegra20_cpu_rail_off_ready(void) 941 { 942 unsigned int cpu_rst_status; 943 944 cpu_rst_status = readl(clk_base + 945 TEGRA_CLK_RST_CONTROLLER_RST_CPU_CMPLX_SET); 946 947 return !!(cpu_rst_status & 0x2); 948 } 949 950 static void tegra20_cpu_clock_suspend(void) 951 { 952 /* switch coresite to clk_m, save off original source */ 953 tegra20_cpu_clk_sctx.clk_csite_src = 954 readl(clk_base + CLK_SOURCE_CSITE); 955 writel(3<<30, clk_base + CLK_SOURCE_CSITE); 956 957 tegra20_cpu_clk_sctx.cpu_burst = 958 readl(clk_base + CCLK_BURST_POLICY); 959 tegra20_cpu_clk_sctx.pllx_base = 960 readl(clk_base + PLLX_BASE); 961 tegra20_cpu_clk_sctx.pllx_misc = 962 readl(clk_base + PLLX_MISC); 963 tegra20_cpu_clk_sctx.cclk_divider = 964 readl(clk_base + SUPER_CCLK_DIVIDER); 965 } 966 967 static void tegra20_cpu_clock_resume(void) 968 { 969 unsigned int reg, policy; 970 971 /* Is CPU complex already running on PLLX? */ 972 reg = readl(clk_base + CCLK_BURST_POLICY); 973 policy = (reg >> CCLK_BURST_POLICY_SHIFT) & 0xF; 974 975 if (policy == CCLK_IDLE_POLICY) 976 reg = (reg >> CCLK_IDLE_POLICY_SHIFT) & 0xF; 977 else if (policy == CCLK_RUN_POLICY) 978 reg = (reg >> CCLK_RUN_POLICY_SHIFT) & 0xF; 979 else 980 BUG(); 981 982 if (reg != CCLK_BURST_POLICY_PLLX) { 983 /* restore PLLX settings if CPU is on different PLL */ 984 writel(tegra20_cpu_clk_sctx.pllx_misc, 985 clk_base + PLLX_MISC); 986 writel(tegra20_cpu_clk_sctx.pllx_base, 987 clk_base + PLLX_BASE); 988 989 /* wait for PLL stabilization if PLLX was enabled */ 990 if (tegra20_cpu_clk_sctx.pllx_base & (1 << 30)) 991 udelay(300); 992 } 993 994 /* 995 * Restore original burst policy setting for calls resulting from CPU 996 * LP2 in idle or system suspend. 997 */ 998 writel(tegra20_cpu_clk_sctx.cclk_divider, 999 clk_base + SUPER_CCLK_DIVIDER); 1000 writel(tegra20_cpu_clk_sctx.cpu_burst, 1001 clk_base + CCLK_BURST_POLICY); 1002 1003 writel(tegra20_cpu_clk_sctx.clk_csite_src, 1004 clk_base + CLK_SOURCE_CSITE); 1005 } 1006 #endif 1007 1008 static struct tegra_cpu_car_ops tegra20_cpu_car_ops = { 1009 .wait_for_reset = tegra20_wait_cpu_in_reset, 1010 .put_in_reset = tegra20_put_cpu_in_reset, 1011 .out_of_reset = tegra20_cpu_out_of_reset, 1012 .enable_clock = tegra20_enable_cpu_clock, 1013 .disable_clock = tegra20_disable_cpu_clock, 1014 #ifdef CONFIG_PM_SLEEP 1015 .rail_off_ready = tegra20_cpu_rail_off_ready, 1016 .suspend = tegra20_cpu_clock_suspend, 1017 .resume = tegra20_cpu_clock_resume, 1018 #endif 1019 }; 1020 1021 static struct tegra_clk_init_table init_table[] __initdata = { 1022 { TEGRA20_CLK_PLL_P, TEGRA20_CLK_CLK_MAX, 216000000, 1 }, 1023 { TEGRA20_CLK_PLL_P_OUT1, TEGRA20_CLK_CLK_MAX, 28800000, 1 }, 1024 { TEGRA20_CLK_PLL_P_OUT2, TEGRA20_CLK_CLK_MAX, 48000000, 1 }, 1025 { TEGRA20_CLK_PLL_P_OUT3, TEGRA20_CLK_CLK_MAX, 72000000, 1 }, 1026 { TEGRA20_CLK_PLL_P_OUT4, TEGRA20_CLK_CLK_MAX, 24000000, 1 }, 1027 { TEGRA20_CLK_PLL_C, TEGRA20_CLK_CLK_MAX, 600000000, 1 }, 1028 { TEGRA20_CLK_PLL_C_OUT1, TEGRA20_CLK_CLK_MAX, 120000000, 1 }, 1029 { TEGRA20_CLK_SCLK, TEGRA20_CLK_PLL_C_OUT1, 0, 1 }, 1030 { TEGRA20_CLK_HCLK, TEGRA20_CLK_CLK_MAX, 0, 1 }, 1031 { TEGRA20_CLK_PCLK, TEGRA20_CLK_CLK_MAX, 60000000, 1 }, 1032 { TEGRA20_CLK_CSITE, TEGRA20_CLK_CLK_MAX, 0, 1 }, 1033 { TEGRA20_CLK_EMC, TEGRA20_CLK_CLK_MAX, 0, 1 }, 1034 { TEGRA20_CLK_CCLK, TEGRA20_CLK_CLK_MAX, 0, 1 }, 1035 { TEGRA20_CLK_UARTA, TEGRA20_CLK_PLL_P, 0, 0 }, 1036 { TEGRA20_CLK_UARTB, TEGRA20_CLK_PLL_P, 0, 0 }, 1037 { TEGRA20_CLK_UARTC, TEGRA20_CLK_PLL_P, 0, 0 }, 1038 { TEGRA20_CLK_UARTD, TEGRA20_CLK_PLL_P, 0, 0 }, 1039 { TEGRA20_CLK_UARTE, TEGRA20_CLK_PLL_P, 0, 0 }, 1040 { TEGRA20_CLK_PLL_A, TEGRA20_CLK_CLK_MAX, 56448000, 1 }, 1041 { TEGRA20_CLK_PLL_A_OUT0, TEGRA20_CLK_CLK_MAX, 11289600, 1 }, 1042 { TEGRA20_CLK_CDEV1, TEGRA20_CLK_CLK_MAX, 0, 1 }, 1043 { TEGRA20_CLK_BLINK, TEGRA20_CLK_CLK_MAX, 32768, 1 }, 1044 { TEGRA20_CLK_I2S1, TEGRA20_CLK_PLL_A_OUT0, 11289600, 0 }, 1045 { TEGRA20_CLK_I2S2, TEGRA20_CLK_PLL_A_OUT0, 11289600, 0 }, 1046 { TEGRA20_CLK_SDMMC1, TEGRA20_CLK_PLL_P, 48000000, 0 }, 1047 { TEGRA20_CLK_SDMMC3, TEGRA20_CLK_PLL_P, 48000000, 0 }, 1048 { TEGRA20_CLK_SDMMC4, TEGRA20_CLK_PLL_P, 48000000, 0 }, 1049 { TEGRA20_CLK_SPI, TEGRA20_CLK_PLL_P, 20000000, 0 }, 1050 { TEGRA20_CLK_SBC1, TEGRA20_CLK_PLL_P, 100000000, 0 }, 1051 { TEGRA20_CLK_SBC2, TEGRA20_CLK_PLL_P, 100000000, 0 }, 1052 { TEGRA20_CLK_SBC3, TEGRA20_CLK_PLL_P, 100000000, 0 }, 1053 { TEGRA20_CLK_SBC4, TEGRA20_CLK_PLL_P, 100000000, 0 }, 1054 { TEGRA20_CLK_HOST1X, TEGRA20_CLK_PLL_C, 150000000, 0 }, 1055 { TEGRA20_CLK_DISP1, TEGRA20_CLK_PLL_P, 600000000, 0 }, 1056 { TEGRA20_CLK_DISP2, TEGRA20_CLK_PLL_P, 600000000, 0 }, 1057 { TEGRA20_CLK_GR2D, TEGRA20_CLK_PLL_C, 300000000, 0 }, 1058 { TEGRA20_CLK_GR3D, TEGRA20_CLK_PLL_C, 300000000, 0 }, 1059 /* must be the last entry */ 1060 { TEGRA20_CLK_CLK_MAX, TEGRA20_CLK_CLK_MAX, 0, 0 }, 1061 }; 1062 1063 static void __init tegra20_clock_apply_init_table(void) 1064 { 1065 tegra_init_from_table(init_table, clks, TEGRA20_CLK_CLK_MAX); 1066 } 1067 1068 /* 1069 * Some clocks may be used by different drivers depending on the board 1070 * configuration. List those here to register them twice in the clock lookup 1071 * table under two names. 1072 */ 1073 static struct tegra_clk_duplicate tegra_clk_duplicates[] = { 1074 TEGRA_CLK_DUPLICATE(TEGRA20_CLK_USBD, "utmip-pad", NULL), 1075 TEGRA_CLK_DUPLICATE(TEGRA20_CLK_USBD, "tegra-ehci.0", NULL), 1076 TEGRA_CLK_DUPLICATE(TEGRA20_CLK_USBD, "tegra-otg", NULL), 1077 TEGRA_CLK_DUPLICATE(TEGRA20_CLK_CCLK, NULL, "cpu"), 1078 /* must be the last entry */ 1079 TEGRA_CLK_DUPLICATE(TEGRA20_CLK_CLK_MAX, NULL, NULL), 1080 }; 1081 1082 static const struct of_device_id pmc_match[] __initconst = { 1083 { .compatible = "nvidia,tegra20-pmc" }, 1084 { }, 1085 }; 1086 1087 static void __init tegra20_clock_init(struct device_node *np) 1088 { 1089 struct device_node *node; 1090 1091 clk_base = of_iomap(np, 0); 1092 if (!clk_base) { 1093 pr_err("Can't map CAR registers\n"); 1094 BUG(); 1095 } 1096 1097 node = of_find_matching_node(NULL, pmc_match); 1098 if (!node) { 1099 pr_err("Failed to find pmc node\n"); 1100 BUG(); 1101 } 1102 1103 pmc_base = of_iomap(node, 0); 1104 if (!pmc_base) { 1105 pr_err("Can't map pmc registers\n"); 1106 BUG(); 1107 } 1108 1109 clks = tegra_clk_init(clk_base, TEGRA20_CLK_CLK_MAX, 1110 TEGRA20_CLK_PERIPH_BANKS); 1111 if (!clks) 1112 return; 1113 1114 tegra20_osc_clk_init(); 1115 tegra_fixed_clk_init(tegra20_clks); 1116 tegra20_pll_init(); 1117 tegra20_super_clk_init(); 1118 tegra_super_clk_gen4_init(clk_base, pmc_base, tegra20_clks, NULL); 1119 tegra20_periph_clk_init(); 1120 tegra20_audio_clk_init(); 1121 tegra_pmc_clk_init(pmc_base, tegra20_clks); 1122 1123 tegra_init_dup_clks(tegra_clk_duplicates, clks, TEGRA20_CLK_CLK_MAX); 1124 1125 tegra_add_of_provider(np); 1126 tegra_register_devclks(devclks, ARRAY_SIZE(devclks)); 1127 1128 tegra_clk_apply_init_table = tegra20_clock_apply_init_table; 1129 1130 tegra_cpu_car_ops = &tegra20_cpu_car_ops; 1131 } 1132 CLK_OF_DECLARE(tegra20, "nvidia,tegra20-car", tegra20_clock_init); 1133