kernel/drivers/clk/tegra/clk-tegra20.c

   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 #include <dt-bindings/clock/tegra20-car.h>
  26
  27 #include "clk.h"
  28 #include "clk-id.h"
  29
  30 #define OSC_CTRL 0x50
  31 #define OSC_CTRL_OSC_FREQ_MASK (3<<30)
  32 #define OSC_CTRL_OSC_FREQ_13MHZ (0<<30)
  33 #define OSC_CTRL_OSC_FREQ_19_2MHZ (1<<30)
  34 #define OSC_CTRL_OSC_FREQ_12MHZ (2<<30)
  35 #define OSC_CTRL_OSC_FREQ_26MHZ (3<<30)
  36 #define OSC_CTRL_MASK (0x3f2 | OSC_CTRL_OSC_FREQ_MASK)
  37
  38 #define OSC_CTRL_PLL_REF_DIV_MASK (3<<28)
  39 #define OSC_CTRL_PLL_REF_DIV_1          (0<<28)
  40 #define OSC_CTRL_PLL_REF_DIV_2          (1<<28)
  41 #define OSC_CTRL_PLL_REF_DIV_4          (2<<28)
  42
  43 #define OSC_FREQ_DET 0x58
  44 #define OSC_FREQ_DET_TRIG (1<<31)
  45
  46 #define OSC_FREQ_DET_STATUS 0x5c
  47 #define OSC_FREQ_DET_BUSY (1<<31)
  48 #define OSC_FREQ_DET_CNT_MASK 0xFFFF
  49
  50 #define TEGRA20_CLK_PERIPH_BANKS        3
  51
  52 #define PLLS_BASE 0xf0
  53 #define PLLS_MISC 0xf4
  54 #define PLLC_BASE 0x80
  55 #define PLLC_MISC 0x8c
  56 #define PLLM_BASE 0x90
  57 #define PLLM_MISC 0x9c
  58 #define PLLP_BASE 0xa0
  59 #define PLLP_MISC 0xac
  60 #define PLLA_BASE 0xb0
  61 #define PLLA_MISC 0xbc
  62 #define PLLU_BASE 0xc0
  63 #define PLLU_MISC 0xcc
  64 #define PLLD_BASE 0xd0
  65 #define PLLD_MISC 0xdc
  66 #define PLLX_BASE 0xe0
  67 #define PLLX_MISC 0xe4
  68 #define PLLE_BASE 0xe8
  69 #define PLLE_MISC 0xec
  70
  71 #define PLL_BASE_LOCK BIT(27)
  72 #define PLLE_MISC_LOCK BIT(11)
  73
  74 #define PLL_MISC_LOCK_ENABLE 18
  75 #define PLLDU_MISC_LOCK_ENABLE 22
  76 #define PLLE_MISC_LOCK_ENABLE 9
  77
  78 #define PLLC_OUT 0x84
  79 #define PLLM_OUT 0x94
  80 #define PLLP_OUTA 0xa4
  81 #define PLLP_OUTB 0xa8
  82 #define PLLA_OUT 0xb4
  83
  84 #define CCLK_BURST_POLICY 0x20
  85 #define SUPER_CCLK_DIVIDER 0x24
  86 #define SCLK_BURST_POLICY 0x28
  87 #define SUPER_SCLK_DIVIDER 0x2c
  88 #define CLK_SYSTEM_RATE 0x30
  89
  90 #define CCLK_BURST_POLICY_SHIFT 28
  91 #define CCLK_RUN_POLICY_SHIFT   4
  92 #define CCLK_IDLE_POLICY_SHIFT  0
  93 #define CCLK_IDLE_POLICY        1
  94 #define CCLK_RUN_POLICY         2
  95 #define CCLK_BURST_POLICY_PLLX  8
  96
  97 #define CLK_SOURCE_I2S1 0x100
  98 #define CLK_SOURCE_I2S2 0x104
  99 #define CLK_SOURCE_PWM 0x110
 100 #define CLK_SOURCE_SPI 0x114
 101 #define CLK_SOURCE_XIO 0x120
 102 #define CLK_SOURCE_TWC 0x12c
 103 #define CLK_SOURCE_IDE 0x144
 104 #define CLK_SOURCE_HDMI 0x18c
 105 #define CLK_SOURCE_DISP1 0x138
 106 #define CLK_SOURCE_DISP2 0x13c
 107 #define CLK_SOURCE_CSITE 0x1d4
 108 #define CLK_SOURCE_I2C1 0x124
 109 #define CLK_SOURCE_I2C2 0x198
 110 #define CLK_SOURCE_I2C3 0x1b8
 111 #define CLK_SOURCE_DVC 0x128
 112 #define CLK_SOURCE_UARTA 0x178
 113 #define CLK_SOURCE_UARTB 0x17c
 114 #define CLK_SOURCE_UARTC 0x1a0
 115 #define CLK_SOURCE_UARTD 0x1c0
 116 #define CLK_SOURCE_UARTE 0x1c4
 117 #define CLK_SOURCE_EMC 0x19c
 118
 119 #define AUDIO_SYNC_CLK 0x38
 120
 121 /* Tegra CPU clock and reset control regs */
 122 #define TEGRA_CLK_RST_CONTROLLER_CLK_CPU_CMPLX          0x4c
 123 #define TEGRA_CLK_RST_CONTROLLER_RST_CPU_CMPLX_SET      0x340
 124 #define TEGRA_CLK_RST_CONTROLLER_RST_CPU_CMPLX_CLR      0x344
 125
 126 #define CPU_CLOCK(cpu)  (0x1 << (8 + cpu))
 127 #define CPU_RESET(cpu)  (0x1111ul << (cpu))
 128
 129 #ifdef CONFIG_PM_SLEEP
 130 static struct cpu_clk_suspend_context {
 131         u32 pllx_misc;
 132         u32 pllx_base;
 133
 134         u32 cpu_burst;
 135         u32 clk_csite_src;
 136         u32 cclk_divider;
 137 } tegra20_cpu_clk_sctx;
 138 #endif
 139
 140 static void __iomem *clk_base;
 141 static void __iomem *pmc_base;
 142
 143 static DEFINE_SPINLOCK(emc_lock);
 144
 145 #define TEGRA_INIT_DATA_MUX(_name, _parents, _offset,   \
 146                             _clk_num, _gate_flags, _clk_id)     \
 147         TEGRA_INIT_DATA(_name, NULL, NULL, _parents, _offset,   \
 148                         30, 2, 0, 0, 8, 1, TEGRA_DIVIDER_ROUND_UP,      \
 149                         _clk_num, \
 150                         _gate_flags, _clk_id)
 151
 152 #define TEGRA_INIT_DATA_DIV16(_name, _parents, _offset, \
 153                               _clk_num, _gate_flags, _clk_id)   \
 154         TEGRA_INIT_DATA(_name, NULL, NULL, _parents, _offset,   \
 155                         30, 2, 0, 0, 16, 0, TEGRA_DIVIDER_ROUND_UP, \
 156                         _clk_num, _gate_flags,  \
 157                         _clk_id)
 158
 159 #define TEGRA_INIT_DATA_NODIV(_name, _parents, _offset, \
 160                               _mux_shift, _mux_width, _clk_num, \
 161                               _gate_flags, _clk_id)                     \
 162         TEGRA_INIT_DATA(_name, NULL, NULL, _parents, _offset,   \
 163                         _mux_shift, _mux_width, 0, 0, 0, 0, 0, \
 164                         _clk_num, _gate_flags,  \
 165                         _clk_id)
 166
 167 static struct clk **clks;
 168
 169 static struct tegra_clk_pll_freq_table pll_c_freq_table[] = {
 170         { 12000000, 600000000, 600, 12, 0, 8 },
 171         { 13000000, 600000000, 600, 13, 0, 8 },
 172         { 19200000, 600000000, 500, 16, 0, 6 },
 173         { 26000000, 600000000, 600, 26, 0, 8 },
 174         { 0, 0, 0, 0, 0, 0 },
 175 };
 176
 177 static struct tegra_clk_pll_freq_table pll_m_freq_table[] = {
 178         { 12000000, 666000000, 666, 12, 0, 8},
 179         { 13000000, 666000000, 666, 13, 0, 8},
 180         { 19200000, 666000000, 555, 16, 0, 8},
 181         { 26000000, 666000000, 666, 26, 0, 8},
 182         { 12000000, 600000000, 600, 12, 0, 8},
 183         { 13000000, 600000000, 600, 13, 0, 8},
 184         { 19200000, 600000000, 375, 12, 0, 6},
 185         { 26000000, 600000000, 600, 26, 0, 8},
 186         { 0, 0, 0, 0, 0, 0 },
 187 };
 188
 189 static struct tegra_clk_pll_freq_table pll_p_freq_table[] = {
 190         { 12000000, 216000000, 432, 12, 1, 8},
 191         { 13000000, 216000000, 432, 13, 1, 8},
 192         { 19200000, 216000000, 90,   4, 1, 1},
 193         { 26000000, 216000000, 432, 26, 1, 8},
 194         { 12000000, 432000000, 432, 12, 0, 8},
 195         { 13000000, 432000000, 432, 13, 0, 8},
 196         { 19200000, 432000000, 90,   4, 0, 1},
 197         { 26000000, 432000000, 432, 26, 0, 8},
 198         { 0, 0, 0, 0, 0, 0 },
 199 };
 200
 201 static struct tegra_clk_pll_freq_table pll_a_freq_table[] = {
 202         { 28800000, 56448000, 49, 25, 0, 1},
 203         { 28800000, 73728000, 64, 25, 0, 1},
 204         { 28800000, 24000000,  5,  6, 0, 1},
 205         { 0, 0, 0, 0, 0, 0 },
 206 };
 207
 208 static struct tegra_clk_pll_freq_table pll_d_freq_table[] = {
 209         { 12000000, 216000000, 216, 12, 0, 4},
 210         { 13000000, 216000000, 216, 13, 0, 4},
 211         { 19200000, 216000000, 135, 12, 0, 3},
 212         { 26000000, 216000000, 216, 26, 0, 4},
 213
 214         { 12000000, 594000000, 594, 12, 0, 8},
 215         { 13000000, 594000000, 594, 13, 0, 8},
 216         { 19200000, 594000000, 495, 16, 0, 8},
 217         { 26000000, 594000000, 594, 26, 0, 8},
 218
 219         { 12000000, 1000000000, 1000, 12, 0, 12},
 220         { 13000000, 1000000000, 1000, 13, 0, 12},
 221         { 19200000, 1000000000, 625,  12, 0, 8},
 222         { 26000000, 1000000000, 1000, 26, 0, 12},
 223
 224         { 0, 0, 0, 0, 0, 0 },
 225 };
 226
 227 static struct tegra_clk_pll_freq_table pll_u_freq_table[] = {
 228         { 12000000, 480000000, 960, 12, 0, 0},
 229         { 13000000, 480000000, 960, 13, 0, 0},
 230         { 19200000, 480000000, 200, 4,  0, 0},
 231         { 26000000, 480000000, 960, 26, 0, 0},
 232         { 0, 0, 0, 0, 0, 0 },
 233 };
 234
 235 static struct tegra_clk_pll_freq_table pll_x_freq_table[] = {
 236         /* 1 GHz */
 237         { 12000000, 1000000000, 1000, 12, 0, 12},
 238         { 13000000, 1000000000, 1000, 13, 0, 12},
 239         { 19200000, 1000000000, 625,  12, 0, 8},
 240         { 26000000, 1000000000, 1000, 26, 0, 12},
 241
 242         /* 912 MHz */
 243         { 12000000, 912000000,  912,  12, 0, 12},
 244         { 13000000, 912000000,  912,  13, 0, 12},
 245         { 19200000, 912000000,  760,  16, 0, 8},
 246         { 26000000, 912000000,  912,  26, 0, 12},
 247
 248         /* 816 MHz */
 249         { 12000000, 816000000,  816,  12, 0, 12},
 250         { 13000000, 816000000,  816,  13, 0, 12},
 251         { 19200000, 816000000,  680,  16, 0, 8},
 252         { 26000000, 816000000,  816,  26, 0, 12},
 253
 254         /* 760 MHz */
 255         { 12000000, 760000000,  760,  12, 0, 12},
 256         { 13000000, 760000000,  760,  13, 0, 12},
 257         { 19200000, 760000000,  950,  24, 0, 8},
 258         { 26000000, 760000000,  760,  26, 0, 12},
 259
 260         /* 750 MHz */
 261         { 12000000, 750000000,  750,  12, 0, 12},
 262         { 13000000, 750000000,  750,  13, 0, 12},
 263         { 19200000, 750000000,  625,  16, 0, 8},
 264         { 26000000, 750000000,  750,  26, 0, 12},
 265
 266         /* 608 MHz */
 267         { 12000000, 608000000,  608,  12, 0, 12},
 268         { 13000000, 608000000,  608,  13, 0, 12},
 269         { 19200000, 608000000,  380,  12, 0, 8},
 270         { 26000000, 608000000,  608,  26, 0, 12},
 271
 272         /* 456 MHz */
 273         { 12000000, 456000000,  456,  12, 0, 12},
 274         { 13000000, 456000000,  456,  13, 0, 12},
 275         { 19200000, 456000000,  380,  16, 0, 8},
 276         { 26000000, 456000000,  456,  26, 0, 12},
 277
 278         /* 312 MHz */
 279         { 12000000, 312000000,  312,  12, 0, 12},
 280         { 13000000, 312000000,  312,  13, 0, 12},
 281         { 19200000, 312000000,  260,  16, 0, 8},
 282         { 26000000, 312000000,  312,  26, 0, 12},
 283
 284         { 0, 0, 0, 0, 0, 0 },
 285 };
 286
 287 static struct tegra_clk_pll_freq_table pll_e_freq_table[] = {
 288         { 12000000, 100000000,  200,  24, 0, 0 },
 289         { 0, 0, 0, 0, 0, 0 },
 290 };
 291
 292 /* PLL parameters */
 293 static struct tegra_clk_pll_params pll_c_params = {
 294         .input_min = 2000000,
 295         .input_max = 31000000,
 296         .cf_min = 1000000,
 297         .cf_max = 6000000,
 298         .vco_min = 20000000,
 299         .vco_max = 1400000000,
 300         .base_reg = PLLC_BASE,
 301         .misc_reg = PLLC_MISC,
 302         .lock_mask = PLL_BASE_LOCK,
 303         .lock_enable_bit_idx = PLL_MISC_LOCK_ENABLE,
 304         .lock_delay = 300,
 305         .freq_table = pll_c_freq_table,
 306         .flags = TEGRA_PLL_HAS_CPCON,
 307 };
 308
 309 static struct tegra_clk_pll_params pll_m_params = {
 310         .input_min = 2000000,
 311         .input_max = 31000000,
 312         .cf_min = 1000000,
 313         .cf_max = 6000000,
 314         .vco_min = 20000000,
 315         .vco_max = 1200000000,
 316         .base_reg = PLLM_BASE,
 317         .misc_reg = PLLM_MISC,
 318         .lock_mask = PLL_BASE_LOCK,
 319         .lock_enable_bit_idx = PLL_MISC_LOCK_ENABLE,
 320         .lock_delay = 300,
 321         .freq_table = pll_m_freq_table,
 322         .flags = TEGRA_PLL_HAS_CPCON,
 323 };
 324
 325 static struct tegra_clk_pll_params pll_p_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 = PLLP_BASE,
 333         .misc_reg = PLLP_MISC,
 334         .lock_mask = PLL_BASE_LOCK,
 335         .lock_enable_bit_idx = PLL_MISC_LOCK_ENABLE,
 336         .lock_delay = 300,
 337         .freq_table = pll_p_freq_table,
 338         .flags = TEGRA_PLL_FIXED | TEGRA_PLL_HAS_CPCON,
 339         .fixed_rate =  216000000,
 340 };
 341
 342 static struct tegra_clk_pll_params pll_a_params = {
 343         .input_min = 2000000,
 344         .input_max = 31000000,
 345         .cf_min = 1000000,
 346         .cf_max = 6000000,
 347         .vco_min = 20000000,
 348         .vco_max = 1400000000,
 349         .base_reg = PLLA_BASE,
 350         .misc_reg = PLLA_MISC,
 351         .lock_mask = PLL_BASE_LOCK,
 352         .lock_enable_bit_idx = PLL_MISC_LOCK_ENABLE,
 353         .lock_delay = 300,
 354         .freq_table = pll_a_freq_table,
 355         .flags = TEGRA_PLL_HAS_CPCON,
 356 };
 357
 358 static struct tegra_clk_pll_params pll_d_params = {
 359         .input_min = 2000000,
 360         .input_max = 40000000,
 361         .cf_min = 1000000,
 362         .cf_max = 6000000,
 363         .vco_min = 40000000,
 364         .vco_max = 1000000000,
 365         .base_reg = PLLD_BASE,
 366         .misc_reg = PLLD_MISC,
 367         .lock_mask = PLL_BASE_LOCK,
 368         .lock_enable_bit_idx = PLLDU_MISC_LOCK_ENABLE,
 369         .lock_delay = 1000,
 370         .freq_table = pll_d_freq_table,
 371         .flags = TEGRA_PLL_HAS_CPCON,
 372 };
 373
 374 static struct pdiv_map pllu_p[] = {
 375         { .pdiv = 1, .hw_val = 1 },
 376         { .pdiv = 2, .hw_val = 0 },
 377         { .pdiv = 0, .hw_val = 0 },
 378 };
 379
 380 static struct tegra_clk_pll_params pll_u_params = {
 381         .input_min = 2000000,
 382         .input_max = 40000000,
 383         .cf_min = 1000000,
 384         .cf_max = 6000000,
 385         .vco_min = 48000000,
 386         .vco_max = 960000000,
 387         .base_reg = PLLU_BASE,
 388         .misc_reg = PLLU_MISC,
 389         .lock_mask = PLL_BASE_LOCK,
 390         .lock_enable_bit_idx = PLLDU_MISC_LOCK_ENABLE,
 391         .lock_delay = 1000,
 392         .pdiv_tohw = pllu_p,
 393         .freq_table = pll_u_freq_table,
 394         .flags = TEGRA_PLLU | TEGRA_PLL_HAS_CPCON,
 395 };
 396
 397 static struct tegra_clk_pll_params pll_x_params = {
 398         .input_min = 2000000,
 399         .input_max = 31000000,
 400         .cf_min = 1000000,
 401         .cf_max = 6000000,
 402         .vco_min = 20000000,
 403         .vco_max = 1200000000,
 404         .base_reg = PLLX_BASE,
 405         .misc_reg = PLLX_MISC,
 406         .lock_mask = PLL_BASE_LOCK,
 407         .lock_enable_bit_idx = PLL_MISC_LOCK_ENABLE,
 408         .lock_delay = 300,
 409         .freq_table = pll_x_freq_table,
 410         .flags = TEGRA_PLL_HAS_CPCON,
 411 };
 412
 413 static struct tegra_clk_pll_params pll_e_params = {
 414         .input_min = 12000000,
 415         .input_max = 12000000,
 416         .cf_min = 0,
 417         .cf_max = 0,
 418         .vco_min = 0,
 419         .vco_max = 0,
 420         .base_reg = PLLE_BASE,
 421         .misc_reg = PLLE_MISC,
 422         .lock_mask = PLLE_MISC_LOCK,
 423         .lock_enable_bit_idx = PLLE_MISC_LOCK_ENABLE,
 424         .lock_delay = 0,
 425         .freq_table = pll_e_freq_table,
 426         .flags = TEGRA_PLL_FIXED,
 427         .fixed_rate = 100000000,
 428 };
 429
 430 static struct tegra_devclk devclks[] __initdata = {
 431         { .con_id = "pll_c", .dt_id = TEGRA20_CLK_PLL_C },
 432         { .con_id = "pll_c_out1", .dt_id = TEGRA20_CLK_PLL_C_OUT1 },
 433         { .con_id = "pll_p", .dt_id = TEGRA20_CLK_PLL_P },
 434         { .con_id = "pll_p_out1", .dt_id = TEGRA20_CLK_PLL_P_OUT1 },
 435         { .con_id = "pll_p_out2", .dt_id = TEGRA20_CLK_PLL_P_OUT2 },
 436         { .con_id = "pll_p_out3", .dt_id = TEGRA20_CLK_PLL_P_OUT3 },
 437         { .con_id = "pll_p_out4", .dt_id = TEGRA20_CLK_PLL_P_OUT4 },
 438         { .con_id = "pll_m", .dt_id = TEGRA20_CLK_PLL_M },
 439         { .con_id = "pll_m_out1", .dt_id = TEGRA20_CLK_PLL_M_OUT1 },
 440         { .con_id = "pll_x", .dt_id = TEGRA20_CLK_PLL_X },
 441         { .con_id = "pll_u", .dt_id = TEGRA20_CLK_PLL_U },
 442         { .con_id = "pll_d", .dt_id = TEGRA20_CLK_PLL_D },
 443         { .con_id = "pll_d_out0", .dt_id = TEGRA20_CLK_PLL_D_OUT0 },
 444         { .con_id = "pll_a", .dt_id = TEGRA20_CLK_PLL_A },
 445         { .con_id = "pll_a_out0", .dt_id = TEGRA20_CLK_PLL_A_OUT0 },
 446         { .con_id = "pll_e", .dt_id = TEGRA20_CLK_PLL_E },
 447         { .con_id = "cclk", .dt_id = TEGRA20_CLK_CCLK },
 448         { .con_id = "sclk", .dt_id = TEGRA20_CLK_SCLK },
 449         { .con_id = "hclk", .dt_id = TEGRA20_CLK_HCLK },
 450         { .con_id = "pclk", .dt_id = TEGRA20_CLK_PCLK },
 451         { .con_id = "fuse", .dt_id = TEGRA20_CLK_FUSE },
 452         { .con_id = "twd", .dt_id = TEGRA20_CLK_TWD },
 453         { .con_id = "audio", .dt_id = TEGRA20_CLK_AUDIO },
 454         { .con_id = "audio_2x", .dt_id = TEGRA20_CLK_AUDIO_2X },
 455         { .dev_id = "tegra20-ac97", .dt_id = TEGRA20_CLK_AC97 },
 456         { .dev_id = "tegra-apbdma", .dt_id = TEGRA20_CLK_APBDMA },
 457         { .dev_id = "rtc-tegra", .dt_id = TEGRA20_CLK_RTC },
 458         { .dev_id = "timer", .dt_id = TEGRA20_CLK_TIMER },
 459         { .dev_id = "tegra-kbc", .dt_id = TEGRA20_CLK_KBC },
 460         { .con_id = "csus", .dev_id =  "tegra_camera", .dt_id = TEGRA20_CLK_CSUS },
 461         { .con_id = "vcp", .dev_id = "tegra-avp", .dt_id = TEGRA20_CLK_VCP },
 462         { .con_id = "bsea", .dev_id = "tegra-avp", .dt_id = TEGRA20_CLK_BSEA },
 463         { .con_id = "bsev", .dev_id = "tegra-aes", .dt_id = TEGRA20_CLK_BSEV },
 464         { .con_id = "emc", .dt_id = TEGRA20_CLK_EMC },
 465         { .dev_id = "fsl-tegra-udc", .dt_id = TEGRA20_CLK_USBD },
 466         { .dev_id = "tegra-ehci.1", .dt_id = TEGRA20_CLK_USB2 },
 467         { .dev_id = "tegra-ehci.2", .dt_id = TEGRA20_CLK_USB3 },
 468         { .dev_id = "dsi", .dt_id = TEGRA20_CLK_DSI },
 469         { .con_id = "csi", .dev_id = "tegra_camera", .dt_id = TEGRA20_CLK_CSI },
 470         { .con_id = "isp", .dev_id = "tegra_camera", .dt_id = TEGRA20_CLK_ISP },
 471         { .con_id = "pex", .dt_id = TEGRA20_CLK_PEX },
 472         { .con_id = "afi", .dt_id = TEGRA20_CLK_AFI },
 473         { .con_id = "cdev1", .dt_id = TEGRA20_CLK_CDEV1 },
 474         { .con_id = "cdev2", .dt_id = TEGRA20_CLK_CDEV2 },
 475         { .con_id = "clk_32k", .dt_id = TEGRA20_CLK_CLK_32K },
 476         { .con_id = "blink", .dt_id = TEGRA20_CLK_BLINK },
 477         { .con_id = "clk_m", .dt_id = TEGRA20_CLK_CLK_M },
 478         { .con_id = "pll_ref", .dt_id = TEGRA20_CLK_PLL_REF },
 479         { .dev_id = "tegra20-i2s.0", .dt_id = TEGRA20_CLK_I2S1 },
 480         { .dev_id = "tegra20-i2s.1", .dt_id = TEGRA20_CLK_I2S2 },
 481         { .con_id = "spdif_out", .dev_id = "tegra20-spdif", .dt_id = TEGRA20_CLK_SPDIF_OUT },
 482         { .con_id = "spdif_in", .dev_id = "tegra20-spdif", .dt_id = TEGRA20_CLK_SPDIF_IN },
 483         { .dev_id = "spi_tegra.0", .dt_id = TEGRA20_CLK_SBC1 },
 484         { .dev_id = "spi_tegra.1", .dt_id = TEGRA20_CLK_SBC2 },
 485         { .dev_id = "spi_tegra.2", .dt_id = TEGRA20_CLK_SBC3 },
 486         { .dev_id = "spi_tegra.3", .dt_id = TEGRA20_CLK_SBC4 },
 487         { .dev_id = "spi", .dt_id = TEGRA20_CLK_SPI },
 488         { .dev_id = "xio", .dt_id = TEGRA20_CLK_XIO },
 489         { .dev_id = "twc", .dt_id = TEGRA20_CLK_TWC },
 490         { .dev_id = "ide", .dt_id = TEGRA20_CLK_IDE },
 491         { .dev_id = "tegra_nand", .dt_id = TEGRA20_CLK_NDFLASH },
 492         { .dev_id = "vfir", .dt_id = TEGRA20_CLK_VFIR },
 493         { .dev_id = "csite", .dt_id = TEGRA20_CLK_CSITE },
 494         { .dev_id = "la", .dt_id = TEGRA20_CLK_LA },
 495         { .dev_id = "tegra_w1", .dt_id = TEGRA20_CLK_OWR },
 496         { .dev_id = "mipi", .dt_id = TEGRA20_CLK_MIPI },
 497         { .dev_id = "vde", .dt_id = TEGRA20_CLK_VDE },
 498         { .con_id = "vi", .dev_id =  "tegra_camera", .dt_id = TEGRA20_CLK_VI },
 499         { .dev_id = "epp", .dt_id = TEGRA20_CLK_EPP },
 500         { .dev_id = "mpe", .dt_id = TEGRA20_CLK_MPE },
 501         { .dev_id = "host1x", .dt_id = TEGRA20_CLK_HOST1X },
 502         { .dev_id = "3d", .dt_id = TEGRA20_CLK_GR3D },
 503         { .dev_id = "2d", .dt_id = TEGRA20_CLK_GR2D },
 504         { .dev_id = "tegra-nor", .dt_id = TEGRA20_CLK_NOR },
 505         { .dev_id = "sdhci-tegra.0", .dt_id = TEGRA20_CLK_SDMMC1 },
 506         { .dev_id = "sdhci-tegra.1", .dt_id = TEGRA20_CLK_SDMMC2 },
 507         { .dev_id = "sdhci-tegra.2", .dt_id = TEGRA20_CLK_SDMMC3 },
 508         { .dev_id = "sdhci-tegra.3", .dt_id = TEGRA20_CLK_SDMMC4 },
 509         { .dev_id = "cve", .dt_id = TEGRA20_CLK_CVE },
 510         { .dev_id = "tvo", .dt_id = TEGRA20_CLK_TVO },
 511         { .dev_id = "tvdac", .dt_id = TEGRA20_CLK_TVDAC },
 512         { .con_id = "vi_sensor", .dev_id = "tegra_camera", .dt_id = TEGRA20_CLK_VI_SENSOR },
 513         { .dev_id = "hdmi", .dt_id = TEGRA20_CLK_HDMI },
 514         { .con_id = "div-clk", .dev_id = "tegra-i2c.0", .dt_id = TEGRA20_CLK_I2C1 },
 515         { .con_id = "div-clk", .dev_id = "tegra-i2c.1", .dt_id = TEGRA20_CLK_I2C2 },
 516         { .con_id = "div-clk", .dev_id = "tegra-i2c.2", .dt_id = TEGRA20_CLK_I2C3 },
 517         { .con_id = "div-clk", .dev_id = "tegra-i2c.3", .dt_id = TEGRA20_CLK_DVC },
 518         { .dev_id = "tegra-pwm", .dt_id = TEGRA20_CLK_PWM },
 519         { .dev_id = "tegra_uart.0", .dt_id = TEGRA20_CLK_UARTA },
 520         { .dev_id = "tegra_uart.1", .dt_id = TEGRA20_CLK_UARTB },
 521         { .dev_id = "tegra_uart.2", .dt_id = TEGRA20_CLK_UARTC },
 522         { .dev_id = "tegra_uart.3", .dt_id = TEGRA20_CLK_UARTD },
 523         { .dev_id = "tegra_uart.4", .dt_id = TEGRA20_CLK_UARTE },
 524         { .dev_id = "tegradc.0", .dt_id = TEGRA20_CLK_DISP1 },
 525         { .dev_id = "tegradc.1", .dt_id = TEGRA20_CLK_DISP2 },
 526 };
 527
 528 static struct tegra_clk tegra20_clks[tegra_clk_max] __initdata = {
 529         [tegra_clk_spdif_out] = { .dt_id = TEGRA20_CLK_SPDIF_OUT, .present = true },
 530         [tegra_clk_spdif_in] = { .dt_id = TEGRA20_CLK_SPDIF_IN, .present = true },
 531         [tegra_clk_sdmmc1] = { .dt_id = TEGRA20_CLK_SDMMC1, .present = true },
 532         [tegra_clk_sdmmc2] = { .dt_id = TEGRA20_CLK_SDMMC2, .present = true },
 533         [tegra_clk_sdmmc3] = { .dt_id = TEGRA20_CLK_SDMMC3, .present = true },
 534         [tegra_clk_sdmmc4] = { .dt_id = TEGRA20_CLK_SDMMC4, .present = true },
 535         [tegra_clk_la] = { .dt_id = TEGRA20_CLK_LA, .present = true },
 536         [tegra_clk_csite] = { .dt_id = TEGRA20_CLK_CSITE, .present = true },
 537         [tegra_clk_vfir] = { .dt_id = TEGRA20_CLK_VFIR, .present = true },
 538         [tegra_clk_mipi] = { .dt_id = TEGRA20_CLK_MIPI, .present = true },
 539         [tegra_clk_nor] = { .dt_id = TEGRA20_CLK_NOR, .present = true },
 540         [tegra_clk_rtc] = { .dt_id = TEGRA20_CLK_RTC, .present = true },
 541         [tegra_clk_timer] = { .dt_id = TEGRA20_CLK_TIMER, .present = true },
 542         [tegra_clk_kbc] = { .dt_id = TEGRA20_CLK_KBC, .present = true },
 543         [tegra_clk_csus] = { .dt_id = TEGRA20_CLK_CSUS, .present = true },
 544         [tegra_clk_vcp] = { .dt_id = TEGRA20_CLK_VCP, .present = true },
 545         [tegra_clk_bsea] = { .dt_id = TEGRA20_CLK_BSEA, .present = true },
 546         [tegra_clk_bsev] = { .dt_id = TEGRA20_CLK_BSEV, .present = true },
 547         [tegra_clk_usbd] = { .dt_id = TEGRA20_CLK_USBD, .present = true },
 548         [tegra_clk_usb2] = { .dt_id = TEGRA20_CLK_USB2, .present = true },
 549         [tegra_clk_usb3] = { .dt_id = TEGRA20_CLK_USB3, .present = true },
 550         [tegra_clk_csi] = { .dt_id = TEGRA20_CLK_CSI, .present = true },
 551         [tegra_clk_isp] = { .dt_id = TEGRA20_CLK_ISP, .present = true },
 552         [tegra_clk_clk_32k] = { .dt_id = TEGRA20_CLK_CLK_32K, .present = true },
 553         [tegra_clk_blink] = { .dt_id = TEGRA20_CLK_BLINK, .present = true },
 554         [tegra_clk_hclk] = { .dt_id = TEGRA20_CLK_HCLK, .present = true },
 555         [tegra_clk_pclk] = { .dt_id = TEGRA20_CLK_PCLK, .present = true },
 556         [tegra_clk_pll_p_out1] = { .dt_id = TEGRA20_CLK_PLL_P_OUT1, .present = true },
 557         [tegra_clk_pll_p_out2] = { .dt_id = TEGRA20_CLK_PLL_P_OUT2, .present = true },
 558         [tegra_clk_pll_p_out3] = { .dt_id = TEGRA20_CLK_PLL_P_OUT3, .present = true },
 559         [tegra_clk_pll_p_out4] = { .dt_id = TEGRA20_CLK_PLL_P_OUT4, .present = true },
 560         [tegra_clk_pll_p] = { .dt_id = TEGRA20_CLK_PLL_P, .present = true },
 561         [tegra_clk_owr] = { .dt_id = TEGRA20_CLK_OWR, .present = true },
 562         [tegra_clk_sbc1] = { .dt_id = TEGRA20_CLK_SBC1, .present = true },
 563         [tegra_clk_sbc2] = { .dt_id = TEGRA20_CLK_SBC2, .present = true },
 564         [tegra_clk_sbc3] = { .dt_id = TEGRA20_CLK_SBC3, .present = true },
 565         [tegra_clk_sbc4] = { .dt_id = TEGRA20_CLK_SBC4, .present = true },
 566         [tegra_clk_vde] = { .dt_id = TEGRA20_CLK_VDE, .present = true },
 567         [tegra_clk_vi] = { .dt_id = TEGRA20_CLK_VI, .present = true },
 568         [tegra_clk_epp] = { .dt_id = TEGRA20_CLK_EPP, .present = true },
 569         [tegra_clk_mpe] = { .dt_id = TEGRA20_CLK_MPE, .present = true },
 570         [tegra_clk_host1x] = { .dt_id = TEGRA20_CLK_HOST1X, .present = true },
 571         [tegra_clk_gr2d] = { .dt_id = TEGRA20_CLK_GR2D, .present = true },
 572         [tegra_clk_gr3d] = { .dt_id = TEGRA20_CLK_GR3D, .present = true },
 573         [tegra_clk_ndflash] = { .dt_id = TEGRA20_CLK_NDFLASH, .present = true },
 574         [tegra_clk_cve] = { .dt_id = TEGRA20_CLK_CVE, .present = true },
 575         [tegra_clk_tvo] = { .dt_id = TEGRA20_CLK_TVO, .present = true },
 576         [tegra_clk_tvdac] = { .dt_id = TEGRA20_CLK_TVDAC, .present = true },
 577         [tegra_clk_vi_sensor] = { .dt_id = TEGRA20_CLK_VI_SENSOR, .present = true },
 578         [tegra_clk_afi] = { .dt_id = TEGRA20_CLK_AFI, .present = true },
 579         [tegra_clk_fuse] = { .dt_id = TEGRA20_CLK_FUSE, .present = true },
 580         [tegra_clk_kfuse] = { .dt_id = TEGRA20_CLK_KFUSE, .present = true },
 581 };
 582
 583 static unsigned long tegra20_clk_measure_input_freq(void)
 584 {
 585         u32 osc_ctrl = readl_relaxed(clk_base + OSC_CTRL);
 586         u32 auto_clk_control = osc_ctrl & OSC_CTRL_OSC_FREQ_MASK;
 587         u32 pll_ref_div = osc_ctrl & OSC_CTRL_PLL_REF_DIV_MASK;
 588         unsigned long input_freq;
 589
 590         switch (auto_clk_control) {
 591         case OSC_CTRL_OSC_FREQ_12MHZ:
 592                 BUG_ON(pll_ref_div != OSC_CTRL_PLL_REF_DIV_1);
 593                 input_freq = 12000000;
 594                 break;
 595         case OSC_CTRL_OSC_FREQ_13MHZ:
 596                 BUG_ON(pll_ref_div != OSC_CTRL_PLL_REF_DIV_1);
 597                 input_freq = 13000000;
 598                 break;
 599         case OSC_CTRL_OSC_FREQ_19_2MHZ:
 600                 BUG_ON(pll_ref_div != OSC_CTRL_PLL_REF_DIV_1);
 601                 input_freq = 19200000;
 602                 break;
 603         case OSC_CTRL_OSC_FREQ_26MHZ:
 604                 BUG_ON(pll_ref_div != OSC_CTRL_PLL_REF_DIV_1);
 605                 input_freq = 26000000;
 606                 break;
 607         default:
 608                 pr_err("Unexpected clock autodetect value %d",
 609                        auto_clk_control);
 610                 BUG();
 611                 return 0;
 612         }
 613
 614         return input_freq;
 615 }
 616
 617 static unsigned int tegra20_get_pll_ref_div(void)
 618 {
 619         u32 pll_ref_div = readl_relaxed(clk_base + OSC_CTRL) &
 620                 OSC_CTRL_PLL_REF_DIV_MASK;
 621
 622         switch (pll_ref_div) {
 623         case OSC_CTRL_PLL_REF_DIV_1:
 624                 return 1;
 625         case OSC_CTRL_PLL_REF_DIV_2:
 626                 return 2;
 627         case OSC_CTRL_PLL_REF_DIV_4:
 628                 return 4;
 629         default:
 630                 pr_err("Invalied pll ref divider %d\n", pll_ref_div);
 631                 BUG();
 632         }
 633         return 0;
 634 }
 635
 636 static void tegra20_pll_init(void)
 637 {
 638         struct clk *clk;
 639
 640         /* PLLC */
 641         clk = tegra_clk_register_pll("pll_c", "pll_ref", clk_base, NULL, 0,
 642                             &pll_c_params, NULL);
 643         clks[TEGRA20_CLK_PLL_C] = clk;
 644
 645         /* PLLC_OUT1 */
 646         clk = tegra_clk_register_divider("pll_c_out1_div", "pll_c",
 647                                 clk_base + PLLC_OUT, 0, TEGRA_DIVIDER_ROUND_UP,
 648                                 8, 8, 1, NULL);
 649         clk = tegra_clk_register_pll_out("pll_c_out1", "pll_c_out1_div",
 650                                 clk_base + PLLC_OUT, 1, 0, CLK_SET_RATE_PARENT,
 651                                 0, NULL);
 652         clks[TEGRA20_CLK_PLL_C_OUT1] = clk;
 653
 654         /* PLLM */
 655         clk = tegra_clk_register_pll("pll_m", "pll_ref", clk_base, NULL,
 656                             CLK_IGNORE_UNUSED | CLK_SET_RATE_GATE,
 657                             &pll_m_params, NULL);
 658         clks[TEGRA20_CLK_PLL_M] = clk;
 659
 660         /* PLLM_OUT1 */
 661         clk = tegra_clk_register_divider("pll_m_out1_div", "pll_m",
 662                                 clk_base + PLLM_OUT, 0, TEGRA_DIVIDER_ROUND_UP,
 663                                 8, 8, 1, NULL);
 664         clk = tegra_clk_register_pll_out("pll_m_out1", "pll_m_out1_div",
 665                                 clk_base + PLLM_OUT, 1, 0, CLK_IGNORE_UNUSED |
 666                                 CLK_SET_RATE_PARENT, 0, NULL);
 667         clks[TEGRA20_CLK_PLL_M_OUT1] = clk;
 668
 669         /* PLLX */
 670         clk = tegra_clk_register_pll("pll_x", "pll_ref", clk_base, NULL, 0,
 671                             &pll_x_params, NULL);
 672         clks[TEGRA20_CLK_PLL_X] = clk;
 673
 674         /* PLLU */
 675         clk = tegra_clk_register_pll("pll_u", "pll_ref", clk_base, NULL, 0,
 676                             &pll_u_params, NULL);
 677         clks[TEGRA20_CLK_PLL_U] = clk;
 678
 679         /* PLLD */
 680         clk = tegra_clk_register_pll("pll_d", "pll_ref", clk_base, NULL, 0,
 681                             &pll_d_params, NULL);
 682         clks[TEGRA20_CLK_PLL_D] = clk;
 683
 684         /* PLLD_OUT0 */
 685         clk = clk_register_fixed_factor(NULL, "pll_d_out0", "pll_d",
 686                                         CLK_SET_RATE_PARENT, 1, 2);
 687         clks[TEGRA20_CLK_PLL_D_OUT0] = clk;
 688
 689         /* PLLA */
 690         clk = tegra_clk_register_pll("pll_a", "pll_p_out1", clk_base, NULL, 0,
 691                             &pll_a_params, NULL);
 692         clks[TEGRA20_CLK_PLL_A] = clk;
 693
 694         /* PLLA_OUT0 */
 695         clk = tegra_clk_register_divider("pll_a_out0_div", "pll_a",
 696                                 clk_base + PLLA_OUT, 0, TEGRA_DIVIDER_ROUND_UP,
 697                                 8, 8, 1, NULL);
 698         clk = tegra_clk_register_pll_out("pll_a_out0", "pll_a_out0_div",
 699                                 clk_base + PLLA_OUT, 1, 0, CLK_IGNORE_UNUSED |
 700                                 CLK_SET_RATE_PARENT, 0, NULL);
 701         clks[TEGRA20_CLK_PLL_A_OUT0] = clk;
 702
 703         /* PLLE */
 704         clk = tegra_clk_register_plle("pll_e", "pll_ref", clk_base, pmc_base,
 705                              0, &pll_e_params, NULL);
 706         clks[TEGRA20_CLK_PLL_E] = clk;
 707 }
 708
 709 static const char *cclk_parents[] = { "clk_m", "pll_c", "clk_32k", "pll_m",
 710                                       "pll_p", "pll_p_out4",
 711                                       "pll_p_out3", "clk_d", "pll_x" };
 712 static const char *sclk_parents[] = { "clk_m", "pll_c_out1", "pll_p_out4",
 713                                       "pll_p_out3", "pll_p_out2", "clk_d",
 714                                       "clk_32k", "pll_m_out1" };
 715
 716 static void tegra20_super_clk_init(void)
 717 {
 718         struct clk *clk;
 719
 720         /* CCLK */
 721         clk = tegra_clk_register_super_mux("cclk", cclk_parents,
 722                               ARRAY_SIZE(cclk_parents), CLK_SET_RATE_PARENT,
 723                               clk_base + CCLK_BURST_POLICY, 0, 4, 0, 0, NULL);
 724         clks[TEGRA20_CLK_CCLK] = clk;
 725
 726         /* SCLK */
 727         clk = tegra_clk_register_super_mux("sclk", sclk_parents,
 728                               ARRAY_SIZE(sclk_parents), CLK_SET_RATE_PARENT,
 729                               clk_base + SCLK_BURST_POLICY, 0, 4, 0, 0, NULL);
 730         clks[TEGRA20_CLK_SCLK] = clk;
 731
 732         /* twd */
 733         clk = clk_register_fixed_factor(NULL, "twd", "cclk", 0, 1, 4);
 734         clks[TEGRA20_CLK_TWD] = clk;
 735 }
 736
 737 static const char *audio_parents[] = {"spdif_in", "i2s1", "i2s2", "unused",
 738                                       "pll_a_out0", "unused", "unused",
 739                                       "unused"};
 740
 741 static void __init tegra20_audio_clk_init(void)
 742 {
 743         struct clk *clk;
 744
 745         /* audio */
 746         clk = clk_register_mux(NULL, "audio_mux", audio_parents,
 747                                 ARRAY_SIZE(audio_parents),
 748                                 CLK_SET_RATE_NO_REPARENT,
 749                                 clk_base + AUDIO_SYNC_CLK, 0, 3, 0, NULL);
 750         clk = clk_register_gate(NULL, "audio", "audio_mux", 0,
 751                                 clk_base + AUDIO_SYNC_CLK, 4,
 752                                 CLK_GATE_SET_TO_DISABLE, NULL);
 753         clks[TEGRA20_CLK_AUDIO] = clk;
 754
 755         /* audio_2x */
 756         clk = clk_register_fixed_factor(NULL, "audio_doubler", "audio",
 757                                         CLK_SET_RATE_PARENT, 2, 1);
 758         clk = tegra_clk_register_periph_gate("audio_2x", "audio_doubler",
 759                                     TEGRA_PERIPH_NO_RESET, clk_base,
 760                                     CLK_SET_RATE_PARENT, 89,
 761                                     periph_clk_enb_refcnt);
 762         clks[TEGRA20_CLK_AUDIO_2X] = clk;
 763
 764 }
 765
 766 static const char *i2s1_parents[] = {"pll_a_out0", "audio_2x", "pll_p",
 767                                      "clk_m"};
 768 static const char *i2s2_parents[] = {"pll_a_out0", "audio_2x", "pll_p",
 769                                      "clk_m"};
 770 static const char *pwm_parents[] = {"pll_p", "pll_c", "audio", "clk_m",
 771                                     "clk_32k"};
 772 static const char *mux_pllpcm_clkm[] = {"pll_p", "pll_c", "pll_m", "clk_m"};
 773 static const char *mux_pllpdc_clkm[] = {"pll_p", "pll_d_out0", "pll_c",
 774                                         "clk_m"};
 775 static const char *mux_pllmcp_clkm[] = {"pll_m", "pll_c", "pll_p", "clk_m"};
 776
 777 static struct tegra_periph_init_data tegra_periph_clk_list[] = {
 778         TEGRA_INIT_DATA_MUX("i2s1", i2s1_parents,     CLK_SOURCE_I2S1,   11, TEGRA_PERIPH_ON_APB, TEGRA20_CLK_I2S1),
 779         TEGRA_INIT_DATA_MUX("i2s2", i2s2_parents,     CLK_SOURCE_I2S2,   18, TEGRA_PERIPH_ON_APB, TEGRA20_CLK_I2S2),
 780         TEGRA_INIT_DATA_MUX("spi",   mux_pllpcm_clkm,   CLK_SOURCE_SPI,   43, TEGRA_PERIPH_ON_APB, TEGRA20_CLK_SPI),
 781         TEGRA_INIT_DATA_MUX("xio",   mux_pllpcm_clkm,   CLK_SOURCE_XIO,   45, 0, TEGRA20_CLK_XIO),
 782         TEGRA_INIT_DATA_MUX("twc",   mux_pllpcm_clkm,   CLK_SOURCE_TWC,   16, TEGRA_PERIPH_ON_APB, TEGRA20_CLK_TWC),
 783         TEGRA_INIT_DATA_MUX("ide",   mux_pllpcm_clkm,   CLK_SOURCE_XIO,   25, 0, TEGRA20_CLK_IDE),
 784         TEGRA_INIT_DATA_DIV16("dvc", mux_pllpcm_clkm,   CLK_SOURCE_DVC,   47, TEGRA_PERIPH_ON_APB, TEGRA20_CLK_DVC),
 785         TEGRA_INIT_DATA_DIV16("i2c1", mux_pllpcm_clkm,   CLK_SOURCE_I2C1,   12, TEGRA_PERIPH_ON_APB, TEGRA20_CLK_I2C1),
 786         TEGRA_INIT_DATA_DIV16("i2c2", mux_pllpcm_clkm,   CLK_SOURCE_I2C2,   54, TEGRA_PERIPH_ON_APB, TEGRA20_CLK_I2C2),
 787         TEGRA_INIT_DATA_DIV16("i2c3", mux_pllpcm_clkm,   CLK_SOURCE_I2C3,   67, TEGRA_PERIPH_ON_APB, TEGRA20_CLK_I2C3),
 788         TEGRA_INIT_DATA_MUX("hdmi", mux_pllpdc_clkm,   CLK_SOURCE_HDMI,   51, 0, TEGRA20_CLK_HDMI),
 789         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),
 790 };
 791
 792 static struct tegra_periph_init_data tegra_periph_nodiv_clk_list[] = {
 793         TEGRA_INIT_DATA_NODIV("uarta",  mux_pllpcm_clkm, CLK_SOURCE_UARTA, 30, 2, 6,   TEGRA_PERIPH_ON_APB, TEGRA20_CLK_UARTA),
 794         TEGRA_INIT_DATA_NODIV("uartb",  mux_pllpcm_clkm, CLK_SOURCE_UARTB, 30, 2, 7,   TEGRA_PERIPH_ON_APB, TEGRA20_CLK_UARTB),
 795         TEGRA_INIT_DATA_NODIV("uartc",  mux_pllpcm_clkm, CLK_SOURCE_UARTC, 30, 2, 55,  TEGRA_PERIPH_ON_APB, TEGRA20_CLK_UARTC),
 796         TEGRA_INIT_DATA_NODIV("uartd",  mux_pllpcm_clkm, CLK_SOURCE_UARTD, 30, 2, 65,  TEGRA_PERIPH_ON_APB, TEGRA20_CLK_UARTD),
 797         TEGRA_INIT_DATA_NODIV("uarte",  mux_pllpcm_clkm, CLK_SOURCE_UARTE, 30, 2, 66,  TEGRA_PERIPH_ON_APB, TEGRA20_CLK_UARTE),
 798         TEGRA_INIT_DATA_NODIV("disp1",  mux_pllpdc_clkm, CLK_SOURCE_DISP1, 30, 2, 27,  0, TEGRA20_CLK_DISP1),
 799         TEGRA_INIT_DATA_NODIV("disp2",  mux_pllpdc_clkm, CLK_SOURCE_DISP2, 30, 2, 26,  0, TEGRA20_CLK_DISP2),
 800 };
 801
 802 static void __init tegra20_periph_clk_init(void)
 803 {
 804         struct tegra_periph_init_data *data;
 805         struct clk *clk;
 806         int i;
 807
 808         /* ac97 */
 809         clk = tegra_clk_register_periph_gate("ac97", "pll_a_out0",
 810                                     TEGRA_PERIPH_ON_APB,
 811                                     clk_base, 0, 3, periph_clk_enb_refcnt);
 812         clks[TEGRA20_CLK_AC97] = clk;
 813
 814         /* apbdma */
 815         clk = tegra_clk_register_periph_gate("apbdma", "pclk", 0, clk_base,
 816                                     0, 34, periph_clk_enb_refcnt);
 817         clks[TEGRA20_CLK_APBDMA] = clk;
 818
 819         /* emc */
 820         clk = clk_register_mux(NULL, "emc_mux", mux_pllmcp_clkm,
 821                                ARRAY_SIZE(mux_pllmcp_clkm),
 822                                CLK_SET_RATE_NO_REPARENT,
 823                                clk_base + CLK_SOURCE_EMC,
 824                                30, 2, 0, &emc_lock);
 825         clk = tegra_clk_register_periph_gate("emc", "emc_mux", 0, clk_base, 0,
 826                                     57, periph_clk_enb_refcnt);
 827         clks[TEGRA20_CLK_EMC] = clk;
 828
 829         clk = tegra_clk_register_mc("mc", "emc_mux", clk_base + CLK_SOURCE_EMC,
 830                                     &emc_lock);
 831         clks[TEGRA20_CLK_MC] = clk;
 832
 833         /* dsi */
 834         clk = tegra_clk_register_periph_gate("dsi", "pll_d", 0, clk_base, 0,
 835                                     48, periph_clk_enb_refcnt);
 836         clk_register_clkdev(clk, NULL, "dsi");
 837         clks[TEGRA20_CLK_DSI] = clk;
 838
 839         /* pex */
 840         clk = tegra_clk_register_periph_gate("pex", "clk_m", 0, clk_base, 0, 70,
 841                                     periph_clk_enb_refcnt);
 842         clks[TEGRA20_CLK_PEX] = clk;
 843
 844         /* cdev1 */
 845         clk = clk_register_fixed_rate(NULL, "cdev1_fixed", NULL, CLK_IS_ROOT,
 846                                       26000000);
 847         clk = tegra_clk_register_periph_gate("cdev1", "cdev1_fixed", 0,
 848                                     clk_base, 0, 94, periph_clk_enb_refcnt);
 849         clks[TEGRA20_CLK_CDEV1] = clk;
 850
 851         /* cdev2 */
 852         clk = clk_register_fixed_rate(NULL, "cdev2_fixed", NULL, CLK_IS_ROOT,
 853                                       26000000);
 854         clk = tegra_clk_register_periph_gate("cdev2", "cdev2_fixed", 0,
 855                                     clk_base, 0, 93, periph_clk_enb_refcnt);
 856         clks[TEGRA20_CLK_CDEV2] = clk;
 857
 858         for (i = 0; i < ARRAY_SIZE(tegra_periph_clk_list); i++) {
 859                 data = &tegra_periph_clk_list[i];
 860                 clk = tegra_clk_register_periph(data->name, data->p.parent_names,
 861                                 data->num_parents, &data->periph,
 862                                 clk_base, data->offset, data->flags);
 863                 clks[data->clk_id] = clk;
 864         }
 865
 866         for (i = 0; i < ARRAY_SIZE(tegra_periph_nodiv_clk_list); i++) {
 867                 data = &tegra_periph_nodiv_clk_list[i];
 868                 clk = tegra_clk_register_periph_nodiv(data->name,
 869                                         data->p.parent_names,
 870                                         data->num_parents, &data->periph,
 871                                         clk_base, data->offset);
 872                 clks[data->clk_id] = clk;
 873         }
 874
 875         tegra_periph_clk_init(clk_base, pmc_base, tegra20_clks, &pll_p_params);
 876 }
 877
 878 static void __init tegra20_osc_clk_init(void)
 879 {
 880         struct clk *clk;
 881         unsigned long input_freq;
 882         unsigned int pll_ref_div;
 883
 884         input_freq = tegra20_clk_measure_input_freq();
 885
 886         /* clk_m */
 887         clk = clk_register_fixed_rate(NULL, "clk_m", NULL, CLK_IS_ROOT |
 888                                       CLK_IGNORE_UNUSED, input_freq);
 889         clks[TEGRA20_CLK_CLK_M] = clk;
 890
 891         /* pll_ref */
 892         pll_ref_div = tegra20_get_pll_ref_div();
 893         clk = clk_register_fixed_factor(NULL, "pll_ref", "clk_m",
 894                                         CLK_SET_RATE_PARENT, 1, pll_ref_div);
 895         clks[TEGRA20_CLK_PLL_REF] = clk;
 896 }
 897
 898 /* Tegra20 CPU clock and reset control functions */
 899 static void tegra20_wait_cpu_in_reset(u32 cpu)
 900 {
 901         unsigned int reg;
 902
 903         do {
 904                 reg = readl(clk_base +
 905                             TEGRA_CLK_RST_CONTROLLER_RST_CPU_CMPLX_SET);
 906                 cpu_relax();
 907         } while (!(reg & (1 << cpu)));  /* check CPU been reset or not */
 908
 909         return;
 910 }
 911
 912 static void tegra20_put_cpu_in_reset(u32 cpu)
 913 {
 914         writel(CPU_RESET(cpu),
 915                clk_base + TEGRA_CLK_RST_CONTROLLER_RST_CPU_CMPLX_SET);
 916         dmb();
 917 }
 918
 919 static void tegra20_cpu_out_of_reset(u32 cpu)
 920 {
 921         writel(CPU_RESET(cpu),
 922                clk_base + TEGRA_CLK_RST_CONTROLLER_RST_CPU_CMPLX_CLR);
 923         wmb();
 924 }
 925
 926 static void tegra20_enable_cpu_clock(u32 cpu)
 927 {
 928         unsigned int reg;
 929
 930         reg = readl(clk_base + TEGRA_CLK_RST_CONTROLLER_CLK_CPU_CMPLX);
 931         writel(reg & ~CPU_CLOCK(cpu),
 932                clk_base + TEGRA_CLK_RST_CONTROLLER_CLK_CPU_CMPLX);
 933         barrier();
 934         reg = readl(clk_base + TEGRA_CLK_RST_CONTROLLER_CLK_CPU_CMPLX);
 935 }
 936
 937 static void tegra20_disable_cpu_clock(u32 cpu)
 938 {
 939         unsigned int reg;
 940
 941         reg = readl(clk_base + TEGRA_CLK_RST_CONTROLLER_CLK_CPU_CMPLX);
 942         writel(reg | CPU_CLOCK(cpu),
 943                clk_base + TEGRA_CLK_RST_CONTROLLER_CLK_CPU_CMPLX);
 944 }
 945
 946 #ifdef CONFIG_PM_SLEEP
 947 static bool tegra20_cpu_rail_off_ready(void)
 948 {
 949         unsigned int cpu_rst_status;
 950
 951         cpu_rst_status = readl(clk_base +
 952                                TEGRA_CLK_RST_CONTROLLER_RST_CPU_CMPLX_SET);
 953
 954         return !!(cpu_rst_status & 0x2);
 955 }
 956
 957 static void tegra20_cpu_clock_suspend(void)
 958 {
 959         /* switch coresite to clk_m, save off original source */
 960         tegra20_cpu_clk_sctx.clk_csite_src =
 961                                 readl(clk_base + CLK_SOURCE_CSITE);
 962         writel(3<<30, clk_base + CLK_SOURCE_CSITE);
 963
 964         tegra20_cpu_clk_sctx.cpu_burst =
 965                                 readl(clk_base + CCLK_BURST_POLICY);
 966         tegra20_cpu_clk_sctx.pllx_base =
 967                                 readl(clk_base + PLLX_BASE);
 968         tegra20_cpu_clk_sctx.pllx_misc =
 969                                 readl(clk_base + PLLX_MISC);
 970         tegra20_cpu_clk_sctx.cclk_divider =
 971                                 readl(clk_base + SUPER_CCLK_DIVIDER);
 972 }
 973
 974 static void tegra20_cpu_clock_resume(void)
 975 {
 976         unsigned int reg, policy;
 977
 978         /* Is CPU complex already running on PLLX? */
 979         reg = readl(clk_base + CCLK_BURST_POLICY);
 980         policy = (reg >> CCLK_BURST_POLICY_SHIFT) & 0xF;
 981
 982         if (policy == CCLK_IDLE_POLICY)
 983                 reg = (reg >> CCLK_IDLE_POLICY_SHIFT) & 0xF;
 984         else if (policy == CCLK_RUN_POLICY)
 985                 reg = (reg >> CCLK_RUN_POLICY_SHIFT) & 0xF;
 986         else
 987                 BUG();
 988
 989         if (reg != CCLK_BURST_POLICY_PLLX) {
 990                 /* restore PLLX settings if CPU is on different PLL */
 991                 writel(tegra20_cpu_clk_sctx.pllx_misc,
 992                                         clk_base + PLLX_MISC);
 993                 writel(tegra20_cpu_clk_sctx.pllx_base,
 994                                         clk_base + PLLX_BASE);
 995
 996                 /* wait for PLL stabilization if PLLX was enabled */
 997                 if (tegra20_cpu_clk_sctx.pllx_base & (1 << 30))
 998                         udelay(300);
 999         }
1000
1001         /*
1002          * Restore original burst policy setting for calls resulting from CPU
1003          * LP2 in idle or system suspend.
1004          */
1005         writel(tegra20_cpu_clk_sctx.cclk_divider,
1006                                         clk_base + SUPER_CCLK_DIVIDER);
1007         writel(tegra20_cpu_clk_sctx.cpu_burst,
1008                                         clk_base + CCLK_BURST_POLICY);
1009
1010         writel(tegra20_cpu_clk_sctx.clk_csite_src,
1011                                         clk_base + CLK_SOURCE_CSITE);
1012 }
1013 #endif
1014
1015 static struct tegra_cpu_car_ops tegra20_cpu_car_ops = {
1016         .wait_for_reset = tegra20_wait_cpu_in_reset,
1017         .put_in_reset   = tegra20_put_cpu_in_reset,
1018         .out_of_reset   = tegra20_cpu_out_of_reset,
1019         .enable_clock   = tegra20_enable_cpu_clock,
1020         .disable_clock  = tegra20_disable_cpu_clock,
1021 #ifdef CONFIG_PM_SLEEP
1022         .rail_off_ready = tegra20_cpu_rail_off_ready,
1023         .suspend        = tegra20_cpu_clock_suspend,
1024         .resume         = tegra20_cpu_clock_resume,
1025 #endif
1026 };
1027
1028 static struct tegra_clk_init_table init_table[] __initdata = {
1029         {TEGRA20_CLK_PLL_P, TEGRA20_CLK_CLK_MAX, 216000000, 1},
1030         {TEGRA20_CLK_PLL_P_OUT1, TEGRA20_CLK_CLK_MAX, 28800000, 1},
1031         {TEGRA20_CLK_PLL_P_OUT2, TEGRA20_CLK_CLK_MAX, 48000000, 1},
1032         {TEGRA20_CLK_PLL_P_OUT3, TEGRA20_CLK_CLK_MAX, 72000000, 1},
1033         {TEGRA20_CLK_PLL_P_OUT4, TEGRA20_CLK_CLK_MAX, 24000000, 1},
1034         {TEGRA20_CLK_PLL_C, TEGRA20_CLK_CLK_MAX, 600000000, 1},
1035         {TEGRA20_CLK_PLL_C_OUT1, TEGRA20_CLK_CLK_MAX, 120000000, 1},
1036         {TEGRA20_CLK_SCLK, TEGRA20_CLK_PLL_C_OUT1, 0, 1},
1037         {TEGRA20_CLK_HCLK, TEGRA20_CLK_CLK_MAX, 0, 1},
1038         {TEGRA20_CLK_PCLK, TEGRA20_CLK_CLK_MAX, 60000000, 1},
1039         {TEGRA20_CLK_CSITE, TEGRA20_CLK_CLK_MAX, 0, 1},
1040         {TEGRA20_CLK_EMC, TEGRA20_CLK_CLK_MAX, 0, 1},
1041         {TEGRA20_CLK_CCLK, TEGRA20_CLK_CLK_MAX, 0, 1},
1042         {TEGRA20_CLK_UARTA, TEGRA20_CLK_PLL_P, 0, 0},
1043         {TEGRA20_CLK_UARTB, TEGRA20_CLK_PLL_P, 0, 0},
1044         {TEGRA20_CLK_UARTC, TEGRA20_CLK_PLL_P, 0, 0},
1045         {TEGRA20_CLK_UARTD, TEGRA20_CLK_PLL_P, 0, 0},
1046         {TEGRA20_CLK_UARTE, TEGRA20_CLK_PLL_P, 0, 0},
1047         {TEGRA20_CLK_PLL_A, TEGRA20_CLK_CLK_MAX, 56448000, 1},
1048         {TEGRA20_CLK_PLL_A_OUT0, TEGRA20_CLK_CLK_MAX, 11289600, 1},
1049         {TEGRA20_CLK_CDEV1, TEGRA20_CLK_CLK_MAX, 0, 1},
1050         {TEGRA20_CLK_BLINK, TEGRA20_CLK_CLK_MAX, 32768, 1},
1051         {TEGRA20_CLK_I2S1, TEGRA20_CLK_PLL_A_OUT0, 11289600, 0},
1052         {TEGRA20_CLK_I2S2, TEGRA20_CLK_PLL_A_OUT0, 11289600, 0},
1053         {TEGRA20_CLK_SDMMC1, TEGRA20_CLK_PLL_P, 48000000, 0},
1054         {TEGRA20_CLK_SDMMC3, TEGRA20_CLK_PLL_P, 48000000, 0},
1055         {TEGRA20_CLK_SDMMC4, TEGRA20_CLK_PLL_P, 48000000, 0},
1056         {TEGRA20_CLK_SPI, TEGRA20_CLK_PLL_P, 20000000, 0},
1057         {TEGRA20_CLK_SBC1, TEGRA20_CLK_PLL_P, 100000000, 0},
1058         {TEGRA20_CLK_SBC2, TEGRA20_CLK_PLL_P, 100000000, 0},
1059         {TEGRA20_CLK_SBC3, TEGRA20_CLK_PLL_P, 100000000, 0},
1060         {TEGRA20_CLK_SBC4, TEGRA20_CLK_PLL_P, 100000000, 0},
1061         {TEGRA20_CLK_HOST1X, TEGRA20_CLK_PLL_C, 150000000, 0},
1062         {TEGRA20_CLK_DISP1, TEGRA20_CLK_PLL_P, 600000000, 0},
1063         {TEGRA20_CLK_DISP2, TEGRA20_CLK_PLL_P, 600000000, 0},
1064         {TEGRA20_CLK_GR2D, TEGRA20_CLK_PLL_C, 300000000, 0},
1065         {TEGRA20_CLK_GR3D, TEGRA20_CLK_PLL_C, 300000000, 0},
1066         {TEGRA20_CLK_CLK_MAX, TEGRA20_CLK_CLK_MAX, 0, 0}, /* This MUST be the last entry */
1067 };
1068
1069 static void __init tegra20_clock_apply_init_table(void)
1070 {
1071         tegra_init_from_table(init_table, clks, TEGRA20_CLK_CLK_MAX);
1072 }
1073
1074 /*
1075  * Some clocks may be used by different drivers depending on the board
1076  * configuration.  List those here to register them twice in the clock lookup
1077  * table under two names.
1078  */
1079 static struct tegra_clk_duplicate tegra_clk_duplicates[] = {
1080         TEGRA_CLK_DUPLICATE(TEGRA20_CLK_USBD,   "utmip-pad",    NULL),
1081         TEGRA_CLK_DUPLICATE(TEGRA20_CLK_USBD,   "tegra-ehci.0", NULL),
1082         TEGRA_CLK_DUPLICATE(TEGRA20_CLK_USBD,   "tegra-otg",    NULL),
1083         TEGRA_CLK_DUPLICATE(TEGRA20_CLK_CCLK,   NULL,           "cpu"),
1084         TEGRA_CLK_DUPLICATE(TEGRA20_CLK_CLK_MAX, NULL, NULL), /* Must be the last entry */
1085 };
1086
1087 static const struct of_device_id pmc_match[] __initconst = {
1088         { .compatible = "nvidia,tegra20-pmc" },
1089         {},
1090 };
1091
1092 static void __init tegra20_clock_init(struct device_node *np)
1093 {
1094         struct device_node *node;
1095
1096         clk_base = of_iomap(np, 0);
1097         if (!clk_base) {
1098                 pr_err("Can't map CAR registers\n");
1099                 BUG();
1100         }
1101
1102         node = of_find_matching_node(NULL, pmc_match);
1103         if (!node) {
1104                 pr_err("Failed to find pmc node\n");
1105                 BUG();
1106         }
1107
1108         pmc_base = of_iomap(node, 0);
1109         if (!pmc_base) {
1110                 pr_err("Can't map pmc registers\n");
1111                 BUG();
1112         }
1113
1114         clks = tegra_clk_init(clk_base, TEGRA20_CLK_CLK_MAX,
1115                                 TEGRA20_CLK_PERIPH_BANKS);
1116         if (!clks)
1117                 return;
1118
1119         tegra20_osc_clk_init();
1120         tegra_fixed_clk_init(tegra20_clks);
1121         tegra20_pll_init();
1122         tegra20_super_clk_init();
1123         tegra_super_clk_gen4_init(clk_base, pmc_base, tegra20_clks, NULL);
1124         tegra20_periph_clk_init();
1125         tegra20_audio_clk_init();
1126         tegra_pmc_clk_init(pmc_base, tegra20_clks);
1127
1128         tegra_init_dup_clks(tegra_clk_duplicates, clks, TEGRA20_CLK_CLK_MAX);
1129
1130         tegra_add_of_provider(np);
1131         tegra_register_devclks(devclks, ARRAY_SIZE(devclks));
1132
1133         tegra_clk_apply_init_table = tegra20_clock_apply_init_table;
1134
1135         tegra_cpu_car_ops = &tegra20_cpu_car_ops;
1136 }
1137 CLK_OF_DECLARE(tegra20, "nvidia,tegra20-car", tegra20_clock_init);