1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Copyright (c) 2012, NVIDIA CORPORATION. All rights reserved. 4 */ 5 6 #include <linux/io.h> 7 #include <linux/clk-provider.h> 8 #include <linux/clkdev.h> 9 #include <linux/of.h> 10 #include <linux/of_address.h> 11 #include <linux/clk/tegra.h> 12 #include <linux/delay.h> 13 #include <dt-bindings/clock/tegra20-car.h> 14 15 #include "clk.h" 16 #include "clk-id.h" 17 18 #define MISC_CLK_ENB 0x48 19 20 #define OSC_CTRL 0x50 21 #define OSC_CTRL_OSC_FREQ_MASK (3<<30) 22 #define OSC_CTRL_OSC_FREQ_13MHZ (0<<30) 23 #define OSC_CTRL_OSC_FREQ_19_2MHZ (1<<30) 24 #define OSC_CTRL_OSC_FREQ_12MHZ (2<<30) 25 #define OSC_CTRL_OSC_FREQ_26MHZ (3<<30) 26 #define OSC_CTRL_MASK (0x3f2 | OSC_CTRL_OSC_FREQ_MASK) 27 28 #define OSC_CTRL_PLL_REF_DIV_MASK (3<<28) 29 #define OSC_CTRL_PLL_REF_DIV_1 (0<<28) 30 #define OSC_CTRL_PLL_REF_DIV_2 (1<<28) 31 #define OSC_CTRL_PLL_REF_DIV_4 (2<<28) 32 33 #define OSC_FREQ_DET 0x58 34 #define OSC_FREQ_DET_TRIG (1<<31) 35 36 #define OSC_FREQ_DET_STATUS 0x5c 37 #define OSC_FREQ_DET_BUSY (1<<31) 38 #define OSC_FREQ_DET_CNT_MASK 0xFFFF 39 40 #define TEGRA20_CLK_PERIPH_BANKS 3 41 42 #define PLLS_BASE 0xf0 43 #define PLLS_MISC 0xf4 44 #define PLLC_BASE 0x80 45 #define PLLC_MISC 0x8c 46 #define PLLM_BASE 0x90 47 #define PLLM_MISC 0x9c 48 #define PLLP_BASE 0xa0 49 #define PLLP_MISC 0xac 50 #define PLLA_BASE 0xb0 51 #define PLLA_MISC 0xbc 52 #define PLLU_BASE 0xc0 53 #define PLLU_MISC 0xcc 54 #define PLLD_BASE 0xd0 55 #define PLLD_MISC 0xdc 56 #define PLLX_BASE 0xe0 57 #define PLLX_MISC 0xe4 58 #define PLLE_BASE 0xe8 59 #define PLLE_MISC 0xec 60 61 #define PLL_BASE_LOCK BIT(27) 62 #define PLLE_MISC_LOCK BIT(11) 63 64 #define PLL_MISC_LOCK_ENABLE 18 65 #define PLLDU_MISC_LOCK_ENABLE 22 66 #define PLLE_MISC_LOCK_ENABLE 9 67 68 #define PLLC_OUT 0x84 69 #define PLLM_OUT 0x94 70 #define PLLP_OUTA 0xa4 71 #define PLLP_OUTB 0xa8 72 #define PLLA_OUT 0xb4 73 74 #define CCLK_BURST_POLICY 0x20 75 #define SUPER_CCLK_DIVIDER 0x24 76 #define SCLK_BURST_POLICY 0x28 77 #define SUPER_SCLK_DIVIDER 0x2c 78 #define CLK_SYSTEM_RATE 0x30 79 80 #define CCLK_BURST_POLICY_SHIFT 28 81 #define CCLK_RUN_POLICY_SHIFT 4 82 #define CCLK_IDLE_POLICY_SHIFT 0 83 #define CCLK_IDLE_POLICY 1 84 #define CCLK_RUN_POLICY 2 85 #define CCLK_BURST_POLICY_PLLX 8 86 87 #define CLK_SOURCE_I2S1 0x100 88 #define CLK_SOURCE_I2S2 0x104 89 #define CLK_SOURCE_PWM 0x110 90 #define CLK_SOURCE_SPI 0x114 91 #define CLK_SOURCE_XIO 0x120 92 #define CLK_SOURCE_TWC 0x12c 93 #define CLK_SOURCE_IDE 0x144 94 #define CLK_SOURCE_HDMI 0x18c 95 #define CLK_SOURCE_DISP1 0x138 96 #define CLK_SOURCE_DISP2 0x13c 97 #define CLK_SOURCE_CSITE 0x1d4 98 #define CLK_SOURCE_I2C1 0x124 99 #define CLK_SOURCE_I2C2 0x198 100 #define CLK_SOURCE_I2C3 0x1b8 101 #define CLK_SOURCE_DVC 0x128 102 #define CLK_SOURCE_UARTA 0x178 103 #define CLK_SOURCE_UARTB 0x17c 104 #define CLK_SOURCE_UARTC 0x1a0 105 #define CLK_SOURCE_UARTD 0x1c0 106 #define CLK_SOURCE_UARTE 0x1c4 107 #define CLK_SOURCE_EMC 0x19c 108 109 #define AUDIO_SYNC_CLK 0x38 110 111 /* Tegra CPU clock and reset control regs */ 112 #define TEGRA_CLK_RST_CONTROLLER_CLK_CPU_CMPLX 0x4c 113 #define TEGRA_CLK_RST_CONTROLLER_RST_CPU_CMPLX_SET 0x340 114 #define TEGRA_CLK_RST_CONTROLLER_RST_CPU_CMPLX_CLR 0x344 115 116 #define CPU_CLOCK(cpu) (0x1 << (8 + cpu)) 117 #define CPU_RESET(cpu) (0x1111ul << (cpu)) 118 119 #ifdef CONFIG_PM_SLEEP 120 static struct cpu_clk_suspend_context { 121 u32 pllx_misc; 122 u32 pllx_base; 123 124 u32 cpu_burst; 125 u32 clk_csite_src; 126 u32 cclk_divider; 127 } tegra20_cpu_clk_sctx; 128 #endif 129 130 static void __iomem *clk_base; 131 static void __iomem *pmc_base; 132 133 #define TEGRA_INIT_DATA_MUX(_name, _parents, _offset, \ 134 _clk_num, _gate_flags, _clk_id) \ 135 TEGRA_INIT_DATA(_name, NULL, NULL, _parents, _offset, \ 136 30, 2, 0, 0, 8, 1, TEGRA_DIVIDER_ROUND_UP, \ 137 _clk_num, \ 138 _gate_flags, _clk_id) 139 140 #define TEGRA_INIT_DATA_DIV16(_name, _parents, _offset, \ 141 _clk_num, _gate_flags, _clk_id) \ 142 TEGRA_INIT_DATA(_name, NULL, NULL, _parents, _offset, \ 143 30, 2, 0, 0, 16, 0, TEGRA_DIVIDER_ROUND_UP, \ 144 _clk_num, _gate_flags, \ 145 _clk_id) 146 147 #define TEGRA_INIT_DATA_NODIV(_name, _parents, _offset, \ 148 _mux_shift, _mux_width, _clk_num, \ 149 _gate_flags, _clk_id) \ 150 TEGRA_INIT_DATA(_name, NULL, NULL, _parents, _offset, \ 151 _mux_shift, _mux_width, 0, 0, 0, 0, 0, \ 152 _clk_num, _gate_flags, \ 153 _clk_id) 154 155 static struct clk **clks; 156 157 static struct tegra_clk_pll_freq_table pll_c_freq_table[] = { 158 { 12000000, 600000000, 600, 12, 1, 8 }, 159 { 13000000, 600000000, 600, 13, 1, 8 }, 160 { 19200000, 600000000, 500, 16, 1, 6 }, 161 { 26000000, 600000000, 600, 26, 1, 8 }, 162 { 0, 0, 0, 0, 0, 0 }, 163 }; 164 165 static struct tegra_clk_pll_freq_table pll_m_freq_table[] = { 166 { 12000000, 666000000, 666, 12, 1, 8 }, 167 { 13000000, 666000000, 666, 13, 1, 8 }, 168 { 19200000, 666000000, 555, 16, 1, 8 }, 169 { 26000000, 666000000, 666, 26, 1, 8 }, 170 { 12000000, 600000000, 600, 12, 1, 8 }, 171 { 13000000, 600000000, 600, 13, 1, 8 }, 172 { 19200000, 600000000, 375, 12, 1, 6 }, 173 { 26000000, 600000000, 600, 26, 1, 8 }, 174 { 0, 0, 0, 0, 0, 0 }, 175 }; 176 177 static struct tegra_clk_pll_freq_table pll_p_freq_table[] = { 178 { 12000000, 216000000, 432, 12, 2, 8 }, 179 { 13000000, 216000000, 432, 13, 2, 8 }, 180 { 19200000, 216000000, 90, 4, 2, 1 }, 181 { 26000000, 216000000, 432, 26, 2, 8 }, 182 { 12000000, 432000000, 432, 12, 1, 8 }, 183 { 13000000, 432000000, 432, 13, 1, 8 }, 184 { 19200000, 432000000, 90, 4, 1, 1 }, 185 { 26000000, 432000000, 432, 26, 1, 8 }, 186 { 0, 0, 0, 0, 0, 0 }, 187 }; 188 189 static struct tegra_clk_pll_freq_table pll_a_freq_table[] = { 190 { 28800000, 56448000, 49, 25, 1, 1 }, 191 { 28800000, 73728000, 64, 25, 1, 1 }, 192 { 28800000, 24000000, 5, 6, 1, 1 }, 193 { 0, 0, 0, 0, 0, 0 }, 194 }; 195 196 static struct tegra_clk_pll_freq_table pll_d_freq_table[] = { 197 { 12000000, 216000000, 216, 12, 1, 4 }, 198 { 13000000, 216000000, 216, 13, 1, 4 }, 199 { 19200000, 216000000, 135, 12, 1, 3 }, 200 { 26000000, 216000000, 216, 26, 1, 4 }, 201 { 12000000, 594000000, 594, 12, 1, 8 }, 202 { 13000000, 594000000, 594, 13, 1, 8 }, 203 { 19200000, 594000000, 495, 16, 1, 8 }, 204 { 26000000, 594000000, 594, 26, 1, 8 }, 205 { 12000000, 1000000000, 1000, 12, 1, 12 }, 206 { 13000000, 1000000000, 1000, 13, 1, 12 }, 207 { 19200000, 1000000000, 625, 12, 1, 8 }, 208 { 26000000, 1000000000, 1000, 26, 1, 12 }, 209 { 0, 0, 0, 0, 0, 0 }, 210 }; 211 212 static struct tegra_clk_pll_freq_table pll_u_freq_table[] = { 213 { 12000000, 480000000, 960, 12, 1, 0 }, 214 { 13000000, 480000000, 960, 13, 1, 0 }, 215 { 19200000, 480000000, 200, 4, 1, 0 }, 216 { 26000000, 480000000, 960, 26, 1, 0 }, 217 { 0, 0, 0, 0, 0, 0 }, 218 }; 219 220 static struct tegra_clk_pll_freq_table pll_x_freq_table[] = { 221 /* 1 GHz */ 222 { 12000000, 1000000000, 1000, 12, 1, 12 }, 223 { 13000000, 1000000000, 1000, 13, 1, 12 }, 224 { 19200000, 1000000000, 625, 12, 1, 8 }, 225 { 26000000, 1000000000, 1000, 26, 1, 12 }, 226 /* 912 MHz */ 227 { 12000000, 912000000, 912, 12, 1, 12 }, 228 { 13000000, 912000000, 912, 13, 1, 12 }, 229 { 19200000, 912000000, 760, 16, 1, 8 }, 230 { 26000000, 912000000, 912, 26, 1, 12 }, 231 /* 816 MHz */ 232 { 12000000, 816000000, 816, 12, 1, 12 }, 233 { 13000000, 816000000, 816, 13, 1, 12 }, 234 { 19200000, 816000000, 680, 16, 1, 8 }, 235 { 26000000, 816000000, 816, 26, 1, 12 }, 236 /* 760 MHz */ 237 { 12000000, 760000000, 760, 12, 1, 12 }, 238 { 13000000, 760000000, 760, 13, 1, 12 }, 239 { 19200000, 760000000, 950, 24, 1, 8 }, 240 { 26000000, 760000000, 760, 26, 1, 12 }, 241 /* 750 MHz */ 242 { 12000000, 750000000, 750, 12, 1, 12 }, 243 { 13000000, 750000000, 750, 13, 1, 12 }, 244 { 19200000, 750000000, 625, 16, 1, 8 }, 245 { 26000000, 750000000, 750, 26, 1, 12 }, 246 /* 608 MHz */ 247 { 12000000, 608000000, 608, 12, 1, 12 }, 248 { 13000000, 608000000, 608, 13, 1, 12 }, 249 { 19200000, 608000000, 380, 12, 1, 8 }, 250 { 26000000, 608000000, 608, 26, 1, 12 }, 251 /* 456 MHz */ 252 { 12000000, 456000000, 456, 12, 1, 12 }, 253 { 13000000, 456000000, 456, 13, 1, 12 }, 254 { 19200000, 456000000, 380, 16, 1, 8 }, 255 { 26000000, 456000000, 456, 26, 1, 12 }, 256 /* 312 MHz */ 257 { 12000000, 312000000, 312, 12, 1, 12 }, 258 { 13000000, 312000000, 312, 13, 1, 12 }, 259 { 19200000, 312000000, 260, 16, 1, 8 }, 260 { 26000000, 312000000, 312, 26, 1, 12 }, 261 { 0, 0, 0, 0, 0, 0 }, 262 }; 263 264 static const struct pdiv_map plle_p[] = { 265 { .pdiv = 1, .hw_val = 1 }, 266 { .pdiv = 0, .hw_val = 0 }, 267 }; 268 269 static struct tegra_clk_pll_freq_table pll_e_freq_table[] = { 270 { 12000000, 100000000, 200, 24, 1, 0 }, 271 { 0, 0, 0, 0, 0, 0 }, 272 }; 273 274 /* PLL parameters */ 275 static struct tegra_clk_pll_params pll_c_params = { 276 .input_min = 2000000, 277 .input_max = 31000000, 278 .cf_min = 1000000, 279 .cf_max = 6000000, 280 .vco_min = 20000000, 281 .vco_max = 1400000000, 282 .base_reg = PLLC_BASE, 283 .misc_reg = PLLC_MISC, 284 .lock_mask = PLL_BASE_LOCK, 285 .lock_enable_bit_idx = PLL_MISC_LOCK_ENABLE, 286 .lock_delay = 300, 287 .freq_table = pll_c_freq_table, 288 .flags = TEGRA_PLL_HAS_CPCON | TEGRA_PLL_HAS_LOCK_ENABLE, 289 }; 290 291 static struct tegra_clk_pll_params pll_m_params = { 292 .input_min = 2000000, 293 .input_max = 31000000, 294 .cf_min = 1000000, 295 .cf_max = 6000000, 296 .vco_min = 20000000, 297 .vco_max = 1200000000, 298 .base_reg = PLLM_BASE, 299 .misc_reg = PLLM_MISC, 300 .lock_mask = PLL_BASE_LOCK, 301 .lock_enable_bit_idx = PLL_MISC_LOCK_ENABLE, 302 .lock_delay = 300, 303 .freq_table = pll_m_freq_table, 304 .flags = TEGRA_PLL_HAS_CPCON | TEGRA_PLL_HAS_LOCK_ENABLE, 305 }; 306 307 static struct tegra_clk_pll_params pll_p_params = { 308 .input_min = 2000000, 309 .input_max = 31000000, 310 .cf_min = 1000000, 311 .cf_max = 6000000, 312 .vco_min = 20000000, 313 .vco_max = 1400000000, 314 .base_reg = PLLP_BASE, 315 .misc_reg = PLLP_MISC, 316 .lock_mask = PLL_BASE_LOCK, 317 .lock_enable_bit_idx = PLL_MISC_LOCK_ENABLE, 318 .lock_delay = 300, 319 .freq_table = pll_p_freq_table, 320 .flags = TEGRA_PLL_FIXED | TEGRA_PLL_HAS_CPCON | 321 TEGRA_PLL_HAS_LOCK_ENABLE, 322 .fixed_rate = 216000000, 323 }; 324 325 static struct tegra_clk_pll_params pll_a_params = { 326 .input_min = 2000000, 327 .input_max = 31000000, 328 .cf_min = 1000000, 329 .cf_max = 6000000, 330 .vco_min = 20000000, 331 .vco_max = 1400000000, 332 .base_reg = PLLA_BASE, 333 .misc_reg = PLLA_MISC, 334 .lock_mask = PLL_BASE_LOCK, 335 .lock_enable_bit_idx = PLL_MISC_LOCK_ENABLE, 336 .lock_delay = 300, 337 .freq_table = pll_a_freq_table, 338 .flags = TEGRA_PLL_HAS_CPCON | TEGRA_PLL_HAS_LOCK_ENABLE, 339 }; 340 341 static struct tegra_clk_pll_params pll_d_params = { 342 .input_min = 2000000, 343 .input_max = 40000000, 344 .cf_min = 1000000, 345 .cf_max = 6000000, 346 .vco_min = 40000000, 347 .vco_max = 1000000000, 348 .base_reg = PLLD_BASE, 349 .misc_reg = PLLD_MISC, 350 .lock_mask = PLL_BASE_LOCK, 351 .lock_enable_bit_idx = PLLDU_MISC_LOCK_ENABLE, 352 .lock_delay = 1000, 353 .freq_table = pll_d_freq_table, 354 .flags = TEGRA_PLL_HAS_CPCON | TEGRA_PLL_HAS_LOCK_ENABLE, 355 }; 356 357 static const struct pdiv_map pllu_p[] = { 358 { .pdiv = 1, .hw_val = 1 }, 359 { .pdiv = 2, .hw_val = 0 }, 360 { .pdiv = 0, .hw_val = 0 }, 361 }; 362 363 static struct tegra_clk_pll_params pll_u_params = { 364 .input_min = 2000000, 365 .input_max = 40000000, 366 .cf_min = 1000000, 367 .cf_max = 6000000, 368 .vco_min = 48000000, 369 .vco_max = 960000000, 370 .base_reg = PLLU_BASE, 371 .misc_reg = PLLU_MISC, 372 .lock_mask = PLL_BASE_LOCK, 373 .lock_enable_bit_idx = PLLDU_MISC_LOCK_ENABLE, 374 .lock_delay = 1000, 375 .pdiv_tohw = pllu_p, 376 .freq_table = pll_u_freq_table, 377 .flags = TEGRA_PLLU | TEGRA_PLL_HAS_CPCON | TEGRA_PLL_HAS_LOCK_ENABLE, 378 }; 379 380 static struct tegra_clk_pll_params pll_x_params = { 381 .input_min = 2000000, 382 .input_max = 31000000, 383 .cf_min = 1000000, 384 .cf_max = 6000000, 385 .vco_min = 20000000, 386 .vco_max = 1200000000, 387 .base_reg = PLLX_BASE, 388 .misc_reg = PLLX_MISC, 389 .lock_mask = PLL_BASE_LOCK, 390 .lock_enable_bit_idx = PLL_MISC_LOCK_ENABLE, 391 .lock_delay = 300, 392 .freq_table = pll_x_freq_table, 393 .flags = TEGRA_PLL_HAS_CPCON | TEGRA_PLL_HAS_LOCK_ENABLE, 394 }; 395 396 static struct tegra_clk_pll_params pll_e_params = { 397 .input_min = 12000000, 398 .input_max = 12000000, 399 .cf_min = 0, 400 .cf_max = 0, 401 .vco_min = 0, 402 .vco_max = 0, 403 .base_reg = PLLE_BASE, 404 .misc_reg = PLLE_MISC, 405 .lock_mask = PLLE_MISC_LOCK, 406 .lock_enable_bit_idx = PLLE_MISC_LOCK_ENABLE, 407 .lock_delay = 0, 408 .pdiv_tohw = plle_p, 409 .freq_table = pll_e_freq_table, 410 .flags = TEGRA_PLL_FIXED | TEGRA_PLL_LOCK_MISC | 411 TEGRA_PLL_HAS_LOCK_ENABLE, 412 .fixed_rate = 100000000, 413 }; 414 415 static struct tegra_devclk devclks[] __initdata = { 416 { .con_id = "pll_c", .dt_id = TEGRA20_CLK_PLL_C }, 417 { .con_id = "pll_c_out1", .dt_id = TEGRA20_CLK_PLL_C_OUT1 }, 418 { .con_id = "pll_p", .dt_id = TEGRA20_CLK_PLL_P }, 419 { .con_id = "pll_p_out1", .dt_id = TEGRA20_CLK_PLL_P_OUT1 }, 420 { .con_id = "pll_p_out2", .dt_id = TEGRA20_CLK_PLL_P_OUT2 }, 421 { .con_id = "pll_p_out3", .dt_id = TEGRA20_CLK_PLL_P_OUT3 }, 422 { .con_id = "pll_p_out4", .dt_id = TEGRA20_CLK_PLL_P_OUT4 }, 423 { .con_id = "pll_m", .dt_id = TEGRA20_CLK_PLL_M }, 424 { .con_id = "pll_m_out1", .dt_id = TEGRA20_CLK_PLL_M_OUT1 }, 425 { .con_id = "pll_x", .dt_id = TEGRA20_CLK_PLL_X }, 426 { .con_id = "pll_u", .dt_id = TEGRA20_CLK_PLL_U }, 427 { .con_id = "pll_d", .dt_id = TEGRA20_CLK_PLL_D }, 428 { .con_id = "pll_d_out0", .dt_id = TEGRA20_CLK_PLL_D_OUT0 }, 429 { .con_id = "pll_a", .dt_id = TEGRA20_CLK_PLL_A }, 430 { .con_id = "pll_a_out0", .dt_id = TEGRA20_CLK_PLL_A_OUT0 }, 431 { .con_id = "pll_e", .dt_id = TEGRA20_CLK_PLL_E }, 432 { .con_id = "cclk", .dt_id = TEGRA20_CLK_CCLK }, 433 { .con_id = "sclk", .dt_id = TEGRA20_CLK_SCLK }, 434 { .con_id = "hclk", .dt_id = TEGRA20_CLK_HCLK }, 435 { .con_id = "pclk", .dt_id = TEGRA20_CLK_PCLK }, 436 { .con_id = "fuse", .dt_id = TEGRA20_CLK_FUSE }, 437 { .con_id = "twd", .dt_id = TEGRA20_CLK_TWD }, 438 { .con_id = "audio", .dt_id = TEGRA20_CLK_AUDIO }, 439 { .con_id = "audio_2x", .dt_id = TEGRA20_CLK_AUDIO_2X }, 440 { .dev_id = "tegra20-ac97", .dt_id = TEGRA20_CLK_AC97 }, 441 { .dev_id = "tegra-apbdma", .dt_id = TEGRA20_CLK_APBDMA }, 442 { .dev_id = "rtc-tegra", .dt_id = TEGRA20_CLK_RTC }, 443 { .dev_id = "timer", .dt_id = TEGRA20_CLK_TIMER }, 444 { .dev_id = "tegra-kbc", .dt_id = TEGRA20_CLK_KBC }, 445 { .con_id = "csus", .dev_id = "tegra_camera", .dt_id = TEGRA20_CLK_CSUS }, 446 { .con_id = "vcp", .dev_id = "tegra-avp", .dt_id = TEGRA20_CLK_VCP }, 447 { .con_id = "bsea", .dev_id = "tegra-avp", .dt_id = TEGRA20_CLK_BSEA }, 448 { .con_id = "bsev", .dev_id = "tegra-aes", .dt_id = TEGRA20_CLK_BSEV }, 449 { .con_id = "emc", .dt_id = TEGRA20_CLK_EMC }, 450 { .dev_id = "fsl-tegra-udc", .dt_id = TEGRA20_CLK_USBD }, 451 { .dev_id = "tegra-ehci.1", .dt_id = TEGRA20_CLK_USB2 }, 452 { .dev_id = "tegra-ehci.2", .dt_id = TEGRA20_CLK_USB3 }, 453 { .dev_id = "dsi", .dt_id = TEGRA20_CLK_DSI }, 454 { .con_id = "csi", .dev_id = "tegra_camera", .dt_id = TEGRA20_CLK_CSI }, 455 { .con_id = "isp", .dev_id = "tegra_camera", .dt_id = TEGRA20_CLK_ISP }, 456 { .con_id = "pex", .dt_id = TEGRA20_CLK_PEX }, 457 { .con_id = "afi", .dt_id = TEGRA20_CLK_AFI }, 458 { .con_id = "cdev1", .dt_id = TEGRA20_CLK_CDEV1 }, 459 { .con_id = "cdev2", .dt_id = TEGRA20_CLK_CDEV2 }, 460 { .con_id = "clk_32k", .dt_id = TEGRA20_CLK_CLK_32K }, 461 { .con_id = "clk_m", .dt_id = TEGRA20_CLK_CLK_M }, 462 { .con_id = "pll_ref", .dt_id = TEGRA20_CLK_PLL_REF }, 463 { .dev_id = "tegra20-i2s.0", .dt_id = TEGRA20_CLK_I2S1 }, 464 { .dev_id = "tegra20-i2s.1", .dt_id = TEGRA20_CLK_I2S2 }, 465 { .con_id = "spdif_out", .dev_id = "tegra20-spdif", .dt_id = TEGRA20_CLK_SPDIF_OUT }, 466 { .con_id = "spdif_in", .dev_id = "tegra20-spdif", .dt_id = TEGRA20_CLK_SPDIF_IN }, 467 { .dev_id = "spi_tegra.0", .dt_id = TEGRA20_CLK_SBC1 }, 468 { .dev_id = "spi_tegra.1", .dt_id = TEGRA20_CLK_SBC2 }, 469 { .dev_id = "spi_tegra.2", .dt_id = TEGRA20_CLK_SBC3 }, 470 { .dev_id = "spi_tegra.3", .dt_id = TEGRA20_CLK_SBC4 }, 471 { .dev_id = "spi", .dt_id = TEGRA20_CLK_SPI }, 472 { .dev_id = "xio", .dt_id = TEGRA20_CLK_XIO }, 473 { .dev_id = "twc", .dt_id = TEGRA20_CLK_TWC }, 474 { .dev_id = "ide", .dt_id = TEGRA20_CLK_IDE }, 475 { .dev_id = "tegra_nand", .dt_id = TEGRA20_CLK_NDFLASH }, 476 { .dev_id = "vfir", .dt_id = TEGRA20_CLK_VFIR }, 477 { .dev_id = "csite", .dt_id = TEGRA20_CLK_CSITE }, 478 { .dev_id = "la", .dt_id = TEGRA20_CLK_LA }, 479 { .dev_id = "tegra_w1", .dt_id = TEGRA20_CLK_OWR }, 480 { .dev_id = "mipi", .dt_id = TEGRA20_CLK_MIPI }, 481 { .dev_id = "vde", .dt_id = TEGRA20_CLK_VDE }, 482 { .con_id = "vi", .dev_id = "tegra_camera", .dt_id = TEGRA20_CLK_VI }, 483 { .dev_id = "epp", .dt_id = TEGRA20_CLK_EPP }, 484 { .dev_id = "mpe", .dt_id = TEGRA20_CLK_MPE }, 485 { .dev_id = "host1x", .dt_id = TEGRA20_CLK_HOST1X }, 486 { .dev_id = "3d", .dt_id = TEGRA20_CLK_GR3D }, 487 { .dev_id = "2d", .dt_id = TEGRA20_CLK_GR2D }, 488 { .dev_id = "tegra-nor", .dt_id = TEGRA20_CLK_NOR }, 489 { .dev_id = "sdhci-tegra.0", .dt_id = TEGRA20_CLK_SDMMC1 }, 490 { .dev_id = "sdhci-tegra.1", .dt_id = TEGRA20_CLK_SDMMC2 }, 491 { .dev_id = "sdhci-tegra.2", .dt_id = TEGRA20_CLK_SDMMC3 }, 492 { .dev_id = "sdhci-tegra.3", .dt_id = TEGRA20_CLK_SDMMC4 }, 493 { .dev_id = "cve", .dt_id = TEGRA20_CLK_CVE }, 494 { .dev_id = "tvo", .dt_id = TEGRA20_CLK_TVO }, 495 { .dev_id = "tvdac", .dt_id = TEGRA20_CLK_TVDAC }, 496 { .con_id = "vi_sensor", .dev_id = "tegra_camera", .dt_id = TEGRA20_CLK_VI_SENSOR }, 497 { .dev_id = "hdmi", .dt_id = TEGRA20_CLK_HDMI }, 498 { .con_id = "div-clk", .dev_id = "tegra-i2c.0", .dt_id = TEGRA20_CLK_I2C1 }, 499 { .con_id = "div-clk", .dev_id = "tegra-i2c.1", .dt_id = TEGRA20_CLK_I2C2 }, 500 { .con_id = "div-clk", .dev_id = "tegra-i2c.2", .dt_id = TEGRA20_CLK_I2C3 }, 501 { .con_id = "div-clk", .dev_id = "tegra-i2c.3", .dt_id = TEGRA20_CLK_DVC }, 502 { .dev_id = "tegra-pwm", .dt_id = TEGRA20_CLK_PWM }, 503 { .dev_id = "tegra_uart.0", .dt_id = TEGRA20_CLK_UARTA }, 504 { .dev_id = "tegra_uart.1", .dt_id = TEGRA20_CLK_UARTB }, 505 { .dev_id = "tegra_uart.2", .dt_id = TEGRA20_CLK_UARTC }, 506 { .dev_id = "tegra_uart.3", .dt_id = TEGRA20_CLK_UARTD }, 507 { .dev_id = "tegra_uart.4", .dt_id = TEGRA20_CLK_UARTE }, 508 { .dev_id = "tegradc.0", .dt_id = TEGRA20_CLK_DISP1 }, 509 { .dev_id = "tegradc.1", .dt_id = TEGRA20_CLK_DISP2 }, 510 }; 511 512 static struct tegra_clk tegra20_clks[tegra_clk_max] __initdata = { 513 [tegra_clk_ahbdma] = { .dt_id = TEGRA20_CLK_AHBDMA, .present = true }, 514 [tegra_clk_apbdma] = { .dt_id = TEGRA20_CLK_APBDMA, .present = true }, 515 [tegra_clk_spdif_out] = { .dt_id = TEGRA20_CLK_SPDIF_OUT, .present = true }, 516 [tegra_clk_spdif_in] = { .dt_id = TEGRA20_CLK_SPDIF_IN, .present = true }, 517 [tegra_clk_sdmmc1] = { .dt_id = TEGRA20_CLK_SDMMC1, .present = true }, 518 [tegra_clk_sdmmc2] = { .dt_id = TEGRA20_CLK_SDMMC2, .present = true }, 519 [tegra_clk_sdmmc3] = { .dt_id = TEGRA20_CLK_SDMMC3, .present = true }, 520 [tegra_clk_sdmmc4] = { .dt_id = TEGRA20_CLK_SDMMC4, .present = true }, 521 [tegra_clk_la] = { .dt_id = TEGRA20_CLK_LA, .present = true }, 522 [tegra_clk_csite] = { .dt_id = TEGRA20_CLK_CSITE, .present = true }, 523 [tegra_clk_vfir] = { .dt_id = TEGRA20_CLK_VFIR, .present = true }, 524 [tegra_clk_mipi] = { .dt_id = TEGRA20_CLK_MIPI, .present = true }, 525 [tegra_clk_nor] = { .dt_id = TEGRA20_CLK_NOR, .present = true }, 526 [tegra_clk_rtc] = { .dt_id = TEGRA20_CLK_RTC, .present = true }, 527 [tegra_clk_timer] = { .dt_id = TEGRA20_CLK_TIMER, .present = true }, 528 [tegra_clk_kbc] = { .dt_id = TEGRA20_CLK_KBC, .present = true }, 529 [tegra_clk_csus] = { .dt_id = TEGRA20_CLK_CSUS, .present = true }, 530 [tegra_clk_vcp] = { .dt_id = TEGRA20_CLK_VCP, .present = true }, 531 [tegra_clk_bsea] = { .dt_id = TEGRA20_CLK_BSEA, .present = true }, 532 [tegra_clk_bsev] = { .dt_id = TEGRA20_CLK_BSEV, .present = true }, 533 [tegra_clk_usbd] = { .dt_id = TEGRA20_CLK_USBD, .present = true }, 534 [tegra_clk_usb2] = { .dt_id = TEGRA20_CLK_USB2, .present = true }, 535 [tegra_clk_usb3] = { .dt_id = TEGRA20_CLK_USB3, .present = true }, 536 [tegra_clk_csi] = { .dt_id = TEGRA20_CLK_CSI, .present = true }, 537 [tegra_clk_isp] = { .dt_id = TEGRA20_CLK_ISP, .present = true }, 538 [tegra_clk_clk_32k] = { .dt_id = TEGRA20_CLK_CLK_32K, .present = true }, 539 [tegra_clk_hclk] = { .dt_id = TEGRA20_CLK_HCLK, .present = true }, 540 [tegra_clk_pclk] = { .dt_id = TEGRA20_CLK_PCLK, .present = true }, 541 [tegra_clk_pll_p_out1] = { .dt_id = TEGRA20_CLK_PLL_P_OUT1, .present = true }, 542 [tegra_clk_pll_p_out2] = { .dt_id = TEGRA20_CLK_PLL_P_OUT2, .present = true }, 543 [tegra_clk_pll_p_out3] = { .dt_id = TEGRA20_CLK_PLL_P_OUT3, .present = true }, 544 [tegra_clk_pll_p_out4] = { .dt_id = TEGRA20_CLK_PLL_P_OUT4, .present = true }, 545 [tegra_clk_pll_p] = { .dt_id = TEGRA20_CLK_PLL_P, .present = true }, 546 [tegra_clk_owr] = { .dt_id = TEGRA20_CLK_OWR, .present = true }, 547 [tegra_clk_sbc1] = { .dt_id = TEGRA20_CLK_SBC1, .present = true }, 548 [tegra_clk_sbc2] = { .dt_id = TEGRA20_CLK_SBC2, .present = true }, 549 [tegra_clk_sbc3] = { .dt_id = TEGRA20_CLK_SBC3, .present = true }, 550 [tegra_clk_sbc4] = { .dt_id = TEGRA20_CLK_SBC4, .present = true }, 551 [tegra_clk_vde] = { .dt_id = TEGRA20_CLK_VDE, .present = true }, 552 [tegra_clk_vi] = { .dt_id = TEGRA20_CLK_VI, .present = true }, 553 [tegra_clk_epp] = { .dt_id = TEGRA20_CLK_EPP, .present = true }, 554 [tegra_clk_mpe] = { .dt_id = TEGRA20_CLK_MPE, .present = true }, 555 [tegra_clk_host1x] = { .dt_id = TEGRA20_CLK_HOST1X, .present = true }, 556 [tegra_clk_gr2d] = { .dt_id = TEGRA20_CLK_GR2D, .present = true }, 557 [tegra_clk_gr3d] = { .dt_id = TEGRA20_CLK_GR3D, .present = true }, 558 [tegra_clk_ndflash] = { .dt_id = TEGRA20_CLK_NDFLASH, .present = true }, 559 [tegra_clk_cve] = { .dt_id = TEGRA20_CLK_CVE, .present = true }, 560 [tegra_clk_tvo] = { .dt_id = TEGRA20_CLK_TVO, .present = true }, 561 [tegra_clk_tvdac] = { .dt_id = TEGRA20_CLK_TVDAC, .present = true }, 562 [tegra_clk_vi_sensor] = { .dt_id = TEGRA20_CLK_VI_SENSOR, .present = true }, 563 [tegra_clk_afi] = { .dt_id = TEGRA20_CLK_AFI, .present = true }, 564 [tegra_clk_fuse] = { .dt_id = TEGRA20_CLK_FUSE, .present = true }, 565 [tegra_clk_kfuse] = { .dt_id = TEGRA20_CLK_KFUSE, .present = true }, 566 }; 567 568 static unsigned long tegra20_clk_measure_input_freq(void) 569 { 570 u32 osc_ctrl = readl_relaxed(clk_base + OSC_CTRL); 571 u32 auto_clk_control = osc_ctrl & OSC_CTRL_OSC_FREQ_MASK; 572 u32 pll_ref_div = osc_ctrl & OSC_CTRL_PLL_REF_DIV_MASK; 573 unsigned long input_freq; 574 575 switch (auto_clk_control) { 576 case OSC_CTRL_OSC_FREQ_12MHZ: 577 BUG_ON(pll_ref_div != OSC_CTRL_PLL_REF_DIV_1); 578 input_freq = 12000000; 579 break; 580 case OSC_CTRL_OSC_FREQ_13MHZ: 581 BUG_ON(pll_ref_div != OSC_CTRL_PLL_REF_DIV_1); 582 input_freq = 13000000; 583 break; 584 case OSC_CTRL_OSC_FREQ_19_2MHZ: 585 BUG_ON(pll_ref_div != OSC_CTRL_PLL_REF_DIV_1); 586 input_freq = 19200000; 587 break; 588 case OSC_CTRL_OSC_FREQ_26MHZ: 589 BUG_ON(pll_ref_div != OSC_CTRL_PLL_REF_DIV_1); 590 input_freq = 26000000; 591 break; 592 default: 593 pr_err("Unexpected clock autodetect value %d", 594 auto_clk_control); 595 BUG(); 596 return 0; 597 } 598 599 return input_freq; 600 } 601 602 static unsigned int tegra20_get_pll_ref_div(void) 603 { 604 u32 pll_ref_div = readl_relaxed(clk_base + OSC_CTRL) & 605 OSC_CTRL_PLL_REF_DIV_MASK; 606 607 switch (pll_ref_div) { 608 case OSC_CTRL_PLL_REF_DIV_1: 609 return 1; 610 case OSC_CTRL_PLL_REF_DIV_2: 611 return 2; 612 case OSC_CTRL_PLL_REF_DIV_4: 613 return 4; 614 default: 615 pr_err("Invalid pll ref divider %d\n", pll_ref_div); 616 BUG(); 617 } 618 return 0; 619 } 620 621 static void tegra20_pll_init(void) 622 { 623 struct clk *clk; 624 625 /* PLLC */ 626 clk = tegra_clk_register_pll("pll_c", "pll_ref", clk_base, NULL, 0, 627 &pll_c_params, NULL); 628 clks[TEGRA20_CLK_PLL_C] = clk; 629 630 /* PLLC_OUT1 */ 631 clk = tegra_clk_register_divider("pll_c_out1_div", "pll_c", 632 clk_base + PLLC_OUT, 0, TEGRA_DIVIDER_ROUND_UP, 633 8, 8, 1, NULL); 634 clk = tegra_clk_register_pll_out("pll_c_out1", "pll_c_out1_div", 635 clk_base + PLLC_OUT, 1, 0, CLK_SET_RATE_PARENT, 636 0, NULL); 637 clks[TEGRA20_CLK_PLL_C_OUT1] = clk; 638 639 /* PLLM */ 640 clk = tegra_clk_register_pll("pll_m", "pll_ref", clk_base, NULL, 641 CLK_SET_RATE_GATE, &pll_m_params, NULL); 642 clks[TEGRA20_CLK_PLL_M] = clk; 643 644 /* PLLM_OUT1 */ 645 clk = tegra_clk_register_divider("pll_m_out1_div", "pll_m", 646 clk_base + PLLM_OUT, 0, TEGRA_DIVIDER_ROUND_UP, 647 8, 8, 1, NULL); 648 clk = tegra_clk_register_pll_out("pll_m_out1", "pll_m_out1_div", 649 clk_base + PLLM_OUT, 1, 0, 650 CLK_SET_RATE_PARENT, 0, NULL); 651 clks[TEGRA20_CLK_PLL_M_OUT1] = clk; 652 653 /* PLLX */ 654 clk = tegra_clk_register_pll("pll_x", "pll_ref", clk_base, NULL, 0, 655 &pll_x_params, NULL); 656 clks[TEGRA20_CLK_PLL_X] = clk; 657 658 /* PLLU */ 659 clk = tegra_clk_register_pll("pll_u", "pll_ref", clk_base, NULL, 0, 660 &pll_u_params, NULL); 661 clks[TEGRA20_CLK_PLL_U] = clk; 662 663 /* PLLD */ 664 clk = tegra_clk_register_pll("pll_d", "pll_ref", clk_base, NULL, 0, 665 &pll_d_params, NULL); 666 clks[TEGRA20_CLK_PLL_D] = clk; 667 668 /* PLLD_OUT0 */ 669 clk = clk_register_fixed_factor(NULL, "pll_d_out0", "pll_d", 670 CLK_SET_RATE_PARENT, 1, 2); 671 clks[TEGRA20_CLK_PLL_D_OUT0] = clk; 672 673 /* PLLA */ 674 clk = tegra_clk_register_pll("pll_a", "pll_p_out1", clk_base, NULL, 0, 675 &pll_a_params, NULL); 676 clks[TEGRA20_CLK_PLL_A] = clk; 677 678 /* PLLA_OUT0 */ 679 clk = tegra_clk_register_divider("pll_a_out0_div", "pll_a", 680 clk_base + PLLA_OUT, 0, TEGRA_DIVIDER_ROUND_UP, 681 8, 8, 1, NULL); 682 clk = tegra_clk_register_pll_out("pll_a_out0", "pll_a_out0_div", 683 clk_base + PLLA_OUT, 1, 0, CLK_IGNORE_UNUSED | 684 CLK_SET_RATE_PARENT, 0, NULL); 685 clks[TEGRA20_CLK_PLL_A_OUT0] = clk; 686 687 /* PLLE */ 688 clk = tegra_clk_register_plle("pll_e", "pll_ref", clk_base, pmc_base, 689 0, &pll_e_params, NULL); 690 clks[TEGRA20_CLK_PLL_E] = clk; 691 } 692 693 static const char *cclk_parents[] = { "clk_m", "pll_c", "clk_32k", "pll_m", 694 "pll_p", "pll_p_out4", 695 "pll_p_out3", "clk_d", "pll_x" }; 696 static const char *sclk_parents[] = { "clk_m", "pll_c_out1", "pll_p_out4", 697 "pll_p_out3", "pll_p_out2", "clk_d", 698 "clk_32k", "pll_m_out1" }; 699 700 static void tegra20_super_clk_init(void) 701 { 702 struct clk *clk; 703 704 /* CCLK */ 705 clk = tegra_clk_register_super_mux("cclk", cclk_parents, 706 ARRAY_SIZE(cclk_parents), CLK_SET_RATE_PARENT, 707 clk_base + CCLK_BURST_POLICY, 0, 4, 0, 0, NULL); 708 clks[TEGRA20_CLK_CCLK] = clk; 709 710 /* SCLK */ 711 clk = tegra_clk_register_super_mux("sclk", sclk_parents, 712 ARRAY_SIZE(sclk_parents), 713 CLK_SET_RATE_PARENT | CLK_IS_CRITICAL, 714 clk_base + SCLK_BURST_POLICY, 0, 4, 0, 0, NULL); 715 clks[TEGRA20_CLK_SCLK] = clk; 716 717 /* twd */ 718 clk = clk_register_fixed_factor(NULL, "twd", "cclk", 0, 1, 4); 719 clks[TEGRA20_CLK_TWD] = clk; 720 } 721 722 static const char *audio_parents[] = { "spdif_in", "i2s1", "i2s2", "unused", 723 "pll_a_out0", "unused", "unused", 724 "unused" }; 725 726 static void __init tegra20_audio_clk_init(void) 727 { 728 struct clk *clk; 729 730 /* audio */ 731 clk = clk_register_mux(NULL, "audio_mux", audio_parents, 732 ARRAY_SIZE(audio_parents), 733 CLK_SET_RATE_NO_REPARENT, 734 clk_base + AUDIO_SYNC_CLK, 0, 3, 0, NULL); 735 clk = clk_register_gate(NULL, "audio", "audio_mux", 0, 736 clk_base + AUDIO_SYNC_CLK, 4, 737 CLK_GATE_SET_TO_DISABLE, NULL); 738 clks[TEGRA20_CLK_AUDIO] = clk; 739 740 /* audio_2x */ 741 clk = clk_register_fixed_factor(NULL, "audio_doubler", "audio", 742 CLK_SET_RATE_PARENT, 2, 1); 743 clk = tegra_clk_register_periph_gate("audio_2x", "audio_doubler", 744 TEGRA_PERIPH_NO_RESET, clk_base, 745 CLK_SET_RATE_PARENT, 89, 746 periph_clk_enb_refcnt); 747 clks[TEGRA20_CLK_AUDIO_2X] = clk; 748 } 749 750 static const char *i2s1_parents[] = { "pll_a_out0", "audio_2x", "pll_p", 751 "clk_m" }; 752 static const char *i2s2_parents[] = { "pll_a_out0", "audio_2x", "pll_p", 753 "clk_m" }; 754 static const char *pwm_parents[] = { "pll_p", "pll_c", "audio", "clk_m", 755 "clk_32k" }; 756 static const char *mux_pllpcm_clkm[] = { "pll_p", "pll_c", "pll_m", "clk_m" }; 757 static const char *mux_pllpdc_clkm[] = { "pll_p", "pll_d_out0", "pll_c", 758 "clk_m" }; 759 760 static struct tegra_periph_init_data tegra_periph_clk_list[] = { 761 TEGRA_INIT_DATA_MUX("i2s1", i2s1_parents, CLK_SOURCE_I2S1, 11, TEGRA_PERIPH_ON_APB, TEGRA20_CLK_I2S1), 762 TEGRA_INIT_DATA_MUX("i2s2", i2s2_parents, CLK_SOURCE_I2S2, 18, TEGRA_PERIPH_ON_APB, TEGRA20_CLK_I2S2), 763 TEGRA_INIT_DATA_MUX("spi", mux_pllpcm_clkm, CLK_SOURCE_SPI, 43, TEGRA_PERIPH_ON_APB, TEGRA20_CLK_SPI), 764 TEGRA_INIT_DATA_MUX("xio", mux_pllpcm_clkm, CLK_SOURCE_XIO, 45, 0, TEGRA20_CLK_XIO), 765 TEGRA_INIT_DATA_MUX("twc", mux_pllpcm_clkm, CLK_SOURCE_TWC, 16, TEGRA_PERIPH_ON_APB, TEGRA20_CLK_TWC), 766 TEGRA_INIT_DATA_MUX("ide", mux_pllpcm_clkm, CLK_SOURCE_XIO, 25, 0, TEGRA20_CLK_IDE), 767 TEGRA_INIT_DATA_DIV16("dvc", mux_pllpcm_clkm, CLK_SOURCE_DVC, 47, TEGRA_PERIPH_ON_APB, TEGRA20_CLK_DVC), 768 TEGRA_INIT_DATA_DIV16("i2c1", mux_pllpcm_clkm, CLK_SOURCE_I2C1, 12, TEGRA_PERIPH_ON_APB, TEGRA20_CLK_I2C1), 769 TEGRA_INIT_DATA_DIV16("i2c2", mux_pllpcm_clkm, CLK_SOURCE_I2C2, 54, TEGRA_PERIPH_ON_APB, TEGRA20_CLK_I2C2), 770 TEGRA_INIT_DATA_DIV16("i2c3", mux_pllpcm_clkm, CLK_SOURCE_I2C3, 67, TEGRA_PERIPH_ON_APB, TEGRA20_CLK_I2C3), 771 TEGRA_INIT_DATA_MUX("hdmi", mux_pllpdc_clkm, CLK_SOURCE_HDMI, 51, 0, TEGRA20_CLK_HDMI), 772 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), 773 }; 774 775 static struct tegra_periph_init_data tegra_periph_nodiv_clk_list[] = { 776 TEGRA_INIT_DATA_NODIV("uarta", mux_pllpcm_clkm, CLK_SOURCE_UARTA, 30, 2, 6, TEGRA_PERIPH_ON_APB, TEGRA20_CLK_UARTA), 777 TEGRA_INIT_DATA_NODIV("uartb", mux_pllpcm_clkm, CLK_SOURCE_UARTB, 30, 2, 7, TEGRA_PERIPH_ON_APB, TEGRA20_CLK_UARTB), 778 TEGRA_INIT_DATA_NODIV("uartc", mux_pllpcm_clkm, CLK_SOURCE_UARTC, 30, 2, 55, TEGRA_PERIPH_ON_APB, TEGRA20_CLK_UARTC), 779 TEGRA_INIT_DATA_NODIV("uartd", mux_pllpcm_clkm, CLK_SOURCE_UARTD, 30, 2, 65, TEGRA_PERIPH_ON_APB, TEGRA20_CLK_UARTD), 780 TEGRA_INIT_DATA_NODIV("uarte", mux_pllpcm_clkm, CLK_SOURCE_UARTE, 30, 2, 66, TEGRA_PERIPH_ON_APB, TEGRA20_CLK_UARTE), 781 TEGRA_INIT_DATA_NODIV("disp1", mux_pllpdc_clkm, CLK_SOURCE_DISP1, 30, 2, 27, 0, TEGRA20_CLK_DISP1), 782 TEGRA_INIT_DATA_NODIV("disp2", mux_pllpdc_clkm, CLK_SOURCE_DISP2, 30, 2, 26, 0, TEGRA20_CLK_DISP2), 783 }; 784 785 static void __init tegra20_periph_clk_init(void) 786 { 787 struct tegra_periph_init_data *data; 788 struct clk *clk; 789 unsigned int i; 790 791 /* ac97 */ 792 clk = tegra_clk_register_periph_gate("ac97", "pll_a_out0", 793 TEGRA_PERIPH_ON_APB, 794 clk_base, 0, 3, periph_clk_enb_refcnt); 795 clks[TEGRA20_CLK_AC97] = clk; 796 797 /* emc */ 798 clk = tegra20_clk_register_emc(clk_base + CLK_SOURCE_EMC, false); 799 800 clks[TEGRA20_CLK_EMC] = clk; 801 802 clk = tegra_clk_register_mc("mc", "emc", clk_base + CLK_SOURCE_EMC, 803 NULL); 804 clks[TEGRA20_CLK_MC] = clk; 805 806 /* dsi */ 807 clk = tegra_clk_register_periph_gate("dsi", "pll_d", 0, clk_base, 0, 808 48, periph_clk_enb_refcnt); 809 clk_register_clkdev(clk, NULL, "dsi"); 810 clks[TEGRA20_CLK_DSI] = clk; 811 812 /* pex */ 813 clk = tegra_clk_register_periph_gate("pex", "clk_m", 0, clk_base, 0, 70, 814 periph_clk_enb_refcnt); 815 clks[TEGRA20_CLK_PEX] = clk; 816 817 /* dev1 OSC divider */ 818 clk_register_divider(NULL, "dev1_osc_div", "clk_m", 819 0, clk_base + MISC_CLK_ENB, 22, 2, 820 CLK_DIVIDER_POWER_OF_TWO | CLK_DIVIDER_READ_ONLY, 821 NULL); 822 823 /* dev2 OSC divider */ 824 clk_register_divider(NULL, "dev2_osc_div", "clk_m", 825 0, clk_base + MISC_CLK_ENB, 20, 2, 826 CLK_DIVIDER_POWER_OF_TWO | CLK_DIVIDER_READ_ONLY, 827 NULL); 828 829 /* cdev1 */ 830 clk = tegra_clk_register_periph_gate("cdev1", "cdev1_mux", 0, 831 clk_base, 0, 94, periph_clk_enb_refcnt); 832 clks[TEGRA20_CLK_CDEV1] = clk; 833 834 /* cdev2 */ 835 clk = tegra_clk_register_periph_gate("cdev2", "cdev2_mux", 0, 836 clk_base, 0, 93, periph_clk_enb_refcnt); 837 clks[TEGRA20_CLK_CDEV2] = clk; 838 839 for (i = 0; i < ARRAY_SIZE(tegra_periph_clk_list); i++) { 840 data = &tegra_periph_clk_list[i]; 841 clk = tegra_clk_register_periph_data(clk_base, data); 842 clks[data->clk_id] = clk; 843 } 844 845 for (i = 0; i < ARRAY_SIZE(tegra_periph_nodiv_clk_list); i++) { 846 data = &tegra_periph_nodiv_clk_list[i]; 847 clk = tegra_clk_register_periph_nodiv(data->name, 848 data->p.parent_names, 849 data->num_parents, &data->periph, 850 clk_base, data->offset); 851 clks[data->clk_id] = clk; 852 } 853 854 tegra_periph_clk_init(clk_base, pmc_base, tegra20_clks, &pll_p_params); 855 } 856 857 static void __init tegra20_osc_clk_init(void) 858 { 859 struct clk *clk; 860 unsigned long input_freq; 861 unsigned int pll_ref_div; 862 863 input_freq = tegra20_clk_measure_input_freq(); 864 865 /* clk_m */ 866 clk = clk_register_fixed_rate(NULL, "clk_m", NULL, CLK_IGNORE_UNUSED, 867 input_freq); 868 clks[TEGRA20_CLK_CLK_M] = clk; 869 870 /* pll_ref */ 871 pll_ref_div = tegra20_get_pll_ref_div(); 872 clk = clk_register_fixed_factor(NULL, "pll_ref", "clk_m", 873 CLK_SET_RATE_PARENT, 1, pll_ref_div); 874 clks[TEGRA20_CLK_PLL_REF] = clk; 875 } 876 877 /* Tegra20 CPU clock and reset control functions */ 878 static void tegra20_wait_cpu_in_reset(u32 cpu) 879 { 880 unsigned int reg; 881 882 do { 883 reg = readl(clk_base + 884 TEGRA_CLK_RST_CONTROLLER_RST_CPU_CMPLX_SET); 885 cpu_relax(); 886 } while (!(reg & (1 << cpu))); /* check CPU been reset or not */ 887 888 return; 889 } 890 891 static void tegra20_put_cpu_in_reset(u32 cpu) 892 { 893 writel(CPU_RESET(cpu), 894 clk_base + TEGRA_CLK_RST_CONTROLLER_RST_CPU_CMPLX_SET); 895 dmb(); 896 } 897 898 static void tegra20_cpu_out_of_reset(u32 cpu) 899 { 900 writel(CPU_RESET(cpu), 901 clk_base + TEGRA_CLK_RST_CONTROLLER_RST_CPU_CMPLX_CLR); 902 wmb(); 903 } 904 905 static void tegra20_enable_cpu_clock(u32 cpu) 906 { 907 unsigned int reg; 908 909 reg = readl(clk_base + TEGRA_CLK_RST_CONTROLLER_CLK_CPU_CMPLX); 910 writel(reg & ~CPU_CLOCK(cpu), 911 clk_base + TEGRA_CLK_RST_CONTROLLER_CLK_CPU_CMPLX); 912 barrier(); 913 reg = readl(clk_base + TEGRA_CLK_RST_CONTROLLER_CLK_CPU_CMPLX); 914 } 915 916 static void tegra20_disable_cpu_clock(u32 cpu) 917 { 918 unsigned int reg; 919 920 reg = readl(clk_base + TEGRA_CLK_RST_CONTROLLER_CLK_CPU_CMPLX); 921 writel(reg | CPU_CLOCK(cpu), 922 clk_base + TEGRA_CLK_RST_CONTROLLER_CLK_CPU_CMPLX); 923 } 924 925 #ifdef CONFIG_PM_SLEEP 926 static bool tegra20_cpu_rail_off_ready(void) 927 { 928 unsigned int cpu_rst_status; 929 930 cpu_rst_status = readl(clk_base + 931 TEGRA_CLK_RST_CONTROLLER_RST_CPU_CMPLX_SET); 932 933 return !!(cpu_rst_status & 0x2); 934 } 935 936 static void tegra20_cpu_clock_suspend(void) 937 { 938 /* switch coresite to clk_m, save off original source */ 939 tegra20_cpu_clk_sctx.clk_csite_src = 940 readl(clk_base + CLK_SOURCE_CSITE); 941 writel(3<<30, clk_base + CLK_SOURCE_CSITE); 942 943 tegra20_cpu_clk_sctx.cpu_burst = 944 readl(clk_base + CCLK_BURST_POLICY); 945 tegra20_cpu_clk_sctx.pllx_base = 946 readl(clk_base + PLLX_BASE); 947 tegra20_cpu_clk_sctx.pllx_misc = 948 readl(clk_base + PLLX_MISC); 949 tegra20_cpu_clk_sctx.cclk_divider = 950 readl(clk_base + SUPER_CCLK_DIVIDER); 951 } 952 953 static void tegra20_cpu_clock_resume(void) 954 { 955 unsigned int reg, policy; 956 u32 misc, base; 957 958 /* Is CPU complex already running on PLLX? */ 959 reg = readl(clk_base + CCLK_BURST_POLICY); 960 policy = (reg >> CCLK_BURST_POLICY_SHIFT) & 0xF; 961 962 if (policy == CCLK_IDLE_POLICY) 963 reg = (reg >> CCLK_IDLE_POLICY_SHIFT) & 0xF; 964 else if (policy == CCLK_RUN_POLICY) 965 reg = (reg >> CCLK_RUN_POLICY_SHIFT) & 0xF; 966 else 967 BUG(); 968 969 if (reg != CCLK_BURST_POLICY_PLLX) { 970 misc = readl_relaxed(clk_base + PLLX_MISC); 971 base = readl_relaxed(clk_base + PLLX_BASE); 972 973 if (misc != tegra20_cpu_clk_sctx.pllx_misc || 974 base != tegra20_cpu_clk_sctx.pllx_base) { 975 /* restore PLLX settings if CPU is on different PLL */ 976 writel(tegra20_cpu_clk_sctx.pllx_misc, 977 clk_base + PLLX_MISC); 978 writel(tegra20_cpu_clk_sctx.pllx_base, 979 clk_base + PLLX_BASE); 980 981 /* wait for PLL stabilization if PLLX was enabled */ 982 if (tegra20_cpu_clk_sctx.pllx_base & (1 << 30)) 983 udelay(300); 984 } 985 } 986 987 /* 988 * Restore original burst policy setting for calls resulting from CPU 989 * LP2 in idle or system suspend. 990 */ 991 writel(tegra20_cpu_clk_sctx.cclk_divider, 992 clk_base + SUPER_CCLK_DIVIDER); 993 writel(tegra20_cpu_clk_sctx.cpu_burst, 994 clk_base + CCLK_BURST_POLICY); 995 996 writel(tegra20_cpu_clk_sctx.clk_csite_src, 997 clk_base + CLK_SOURCE_CSITE); 998 } 999 #endif 1000 1001 static struct tegra_cpu_car_ops tegra20_cpu_car_ops = { 1002 .wait_for_reset = tegra20_wait_cpu_in_reset, 1003 .put_in_reset = tegra20_put_cpu_in_reset, 1004 .out_of_reset = tegra20_cpu_out_of_reset, 1005 .enable_clock = tegra20_enable_cpu_clock, 1006 .disable_clock = tegra20_disable_cpu_clock, 1007 #ifdef CONFIG_PM_SLEEP 1008 .rail_off_ready = tegra20_cpu_rail_off_ready, 1009 .suspend = tegra20_cpu_clock_suspend, 1010 .resume = tegra20_cpu_clock_resume, 1011 #endif 1012 }; 1013 1014 static struct tegra_clk_init_table init_table[] __initdata = { 1015 { TEGRA20_CLK_PLL_P, TEGRA20_CLK_CLK_MAX, 216000000, 1 }, 1016 { TEGRA20_CLK_PLL_P_OUT1, TEGRA20_CLK_CLK_MAX, 28800000, 1 }, 1017 { TEGRA20_CLK_PLL_P_OUT2, TEGRA20_CLK_CLK_MAX, 48000000, 1 }, 1018 { TEGRA20_CLK_PLL_P_OUT3, TEGRA20_CLK_CLK_MAX, 72000000, 1 }, 1019 { TEGRA20_CLK_PLL_P_OUT4, TEGRA20_CLK_CLK_MAX, 24000000, 1 }, 1020 { TEGRA20_CLK_PLL_C, TEGRA20_CLK_CLK_MAX, 600000000, 0 }, 1021 { TEGRA20_CLK_PLL_C_OUT1, TEGRA20_CLK_CLK_MAX, 240000000, 0 }, 1022 { TEGRA20_CLK_SCLK, TEGRA20_CLK_PLL_C_OUT1, 240000000, 0 }, 1023 { TEGRA20_CLK_HCLK, TEGRA20_CLK_CLK_MAX, 240000000, 0 }, 1024 { TEGRA20_CLK_PCLK, TEGRA20_CLK_CLK_MAX, 60000000, 0 }, 1025 { TEGRA20_CLK_CSITE, TEGRA20_CLK_CLK_MAX, 0, 1 }, 1026 { TEGRA20_CLK_CCLK, TEGRA20_CLK_CLK_MAX, 0, 1 }, 1027 { TEGRA20_CLK_UARTA, TEGRA20_CLK_PLL_P, 0, 0 }, 1028 { TEGRA20_CLK_UARTB, TEGRA20_CLK_PLL_P, 0, 0 }, 1029 { TEGRA20_CLK_UARTC, TEGRA20_CLK_PLL_P, 0, 0 }, 1030 { TEGRA20_CLK_UARTD, TEGRA20_CLK_PLL_P, 0, 0 }, 1031 { TEGRA20_CLK_UARTE, TEGRA20_CLK_PLL_P, 0, 0 }, 1032 { TEGRA20_CLK_PLL_A, TEGRA20_CLK_CLK_MAX, 56448000, 0 }, 1033 { TEGRA20_CLK_PLL_A_OUT0, TEGRA20_CLK_CLK_MAX, 11289600, 0 }, 1034 { TEGRA20_CLK_I2S1, TEGRA20_CLK_PLL_A_OUT0, 11289600, 0 }, 1035 { TEGRA20_CLK_I2S2, TEGRA20_CLK_PLL_A_OUT0, 11289600, 0 }, 1036 { TEGRA20_CLK_SDMMC1, TEGRA20_CLK_PLL_P, 48000000, 0 }, 1037 { TEGRA20_CLK_SDMMC3, TEGRA20_CLK_PLL_P, 48000000, 0 }, 1038 { TEGRA20_CLK_SDMMC4, TEGRA20_CLK_PLL_P, 48000000, 0 }, 1039 { TEGRA20_CLK_SPI, TEGRA20_CLK_PLL_P, 20000000, 0 }, 1040 { TEGRA20_CLK_SBC1, TEGRA20_CLK_PLL_P, 100000000, 0 }, 1041 { TEGRA20_CLK_SBC2, TEGRA20_CLK_PLL_P, 100000000, 0 }, 1042 { TEGRA20_CLK_SBC3, TEGRA20_CLK_PLL_P, 100000000, 0 }, 1043 { TEGRA20_CLK_SBC4, TEGRA20_CLK_PLL_P, 100000000, 0 }, 1044 { TEGRA20_CLK_HOST1X, TEGRA20_CLK_PLL_C, 150000000, 0 }, 1045 { TEGRA20_CLK_GR2D, TEGRA20_CLK_PLL_C, 300000000, 0 }, 1046 { TEGRA20_CLK_GR3D, TEGRA20_CLK_PLL_C, 300000000, 0 }, 1047 { TEGRA20_CLK_VDE, TEGRA20_CLK_PLL_C, 300000000, 0 }, 1048 /* must be the last entry */ 1049 { TEGRA20_CLK_CLK_MAX, TEGRA20_CLK_CLK_MAX, 0, 0 }, 1050 }; 1051 1052 static void __init tegra20_clock_apply_init_table(void) 1053 { 1054 tegra_init_from_table(init_table, clks, TEGRA20_CLK_CLK_MAX); 1055 } 1056 1057 /* 1058 * Some clocks may be used by different drivers depending on the board 1059 * configuration. List those here to register them twice in the clock lookup 1060 * table under two names. 1061 */ 1062 static struct tegra_clk_duplicate tegra_clk_duplicates[] = { 1063 TEGRA_CLK_DUPLICATE(TEGRA20_CLK_USBD, "utmip-pad", NULL), 1064 TEGRA_CLK_DUPLICATE(TEGRA20_CLK_USBD, "tegra-ehci.0", NULL), 1065 TEGRA_CLK_DUPLICATE(TEGRA20_CLK_USBD, "tegra-otg", NULL), 1066 TEGRA_CLK_DUPLICATE(TEGRA20_CLK_CCLK, NULL, "cpu"), 1067 /* must be the last entry */ 1068 TEGRA_CLK_DUPLICATE(TEGRA20_CLK_CLK_MAX, NULL, NULL), 1069 }; 1070 1071 static const struct of_device_id pmc_match[] __initconst = { 1072 { .compatible = "nvidia,tegra20-pmc" }, 1073 { }, 1074 }; 1075 1076 static struct clk *tegra20_clk_src_onecell_get(struct of_phandle_args *clkspec, 1077 void *data) 1078 { 1079 struct clk_hw *parent_hw; 1080 struct clk_hw *hw; 1081 struct clk *clk; 1082 1083 clk = of_clk_src_onecell_get(clkspec, data); 1084 if (IS_ERR(clk)) 1085 return clk; 1086 1087 hw = __clk_get_hw(clk); 1088 1089 /* 1090 * Tegra20 CDEV1 and CDEV2 clocks are a bit special case, their parent 1091 * clock is created by the pinctrl driver. It is possible for clk user 1092 * to request these clocks before pinctrl driver got probed and hence 1093 * user will get an orphaned clock. That might be undesirable because 1094 * user may expect parent clock to be enabled by the child. 1095 */ 1096 if (clkspec->args[0] == TEGRA20_CLK_CDEV1 || 1097 clkspec->args[0] == TEGRA20_CLK_CDEV2) { 1098 parent_hw = clk_hw_get_parent(hw); 1099 if (!parent_hw) 1100 return ERR_PTR(-EPROBE_DEFER); 1101 } 1102 1103 if (clkspec->args[0] == TEGRA20_CLK_EMC) { 1104 if (!tegra20_clk_emc_driver_available(hw)) 1105 return ERR_PTR(-EPROBE_DEFER); 1106 } 1107 1108 return clk; 1109 } 1110 1111 static void __init tegra20_clock_init(struct device_node *np) 1112 { 1113 struct device_node *node; 1114 1115 clk_base = of_iomap(np, 0); 1116 if (!clk_base) { 1117 pr_err("Can't map CAR registers\n"); 1118 BUG(); 1119 } 1120 1121 node = of_find_matching_node(NULL, pmc_match); 1122 if (!node) { 1123 pr_err("Failed to find pmc node\n"); 1124 BUG(); 1125 } 1126 1127 pmc_base = of_iomap(node, 0); 1128 if (!pmc_base) { 1129 pr_err("Can't map pmc registers\n"); 1130 BUG(); 1131 } 1132 1133 clks = tegra_clk_init(clk_base, TEGRA20_CLK_CLK_MAX, 1134 TEGRA20_CLK_PERIPH_BANKS); 1135 if (!clks) 1136 return; 1137 1138 tegra20_osc_clk_init(); 1139 tegra_fixed_clk_init(tegra20_clks); 1140 tegra20_pll_init(); 1141 tegra20_super_clk_init(); 1142 tegra_super_clk_gen4_init(clk_base, pmc_base, tegra20_clks, NULL); 1143 tegra20_periph_clk_init(); 1144 tegra20_audio_clk_init(); 1145 1146 tegra_init_dup_clks(tegra_clk_duplicates, clks, TEGRA20_CLK_CLK_MAX); 1147 1148 tegra_add_of_provider(np, tegra20_clk_src_onecell_get); 1149 tegra_register_devclks(devclks, ARRAY_SIZE(devclks)); 1150 1151 tegra_clk_apply_init_table = tegra20_clock_apply_init_table; 1152 1153 tegra_cpu_car_ops = &tegra20_cpu_car_ops; 1154 } 1155 CLK_OF_DECLARE(tegra20, "nvidia,tegra20-car", tegra20_clock_init); 1156