arch/arm/mach-omap1/clock_data.c

   1 /*
   2  *  linux/arch/arm/mach-omap1/clock_data.c
   3  *
   4  *  Copyright (C) 2004 - 2005, 2009-2010 Nokia Corporation
   5  *  Written by Tuukka Tikkanen <tuukka.tikkanen@elektrobit.com>
   6  *  Based on clocks.h by Tony Lindgren, Gordon McNutt and RidgeRun, Inc
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 as
  10  * published by the Free Software Foundation.
  11  *
  12  * To do:
  13  * - Clocks that are only available on some chips should be marked with the
  14  *   chips that they are present on.
  15  */
  16
  17 #include <linux/kernel.h>
  18 #include <linux/clk.h>
  19 #include <linux/io.h>
  20
  21 #include <asm/mach-types.h>  /* for machine_is_* */
  22
  23 #include <plat/clock.h>
  24 #include <plat/cpu.h>
  25 #include <plat/clkdev_omap.h>
  26 #include <plat/usb.h>   /* for OTG_BASE */
  27
  28 #include "clock.h"
  29
  30 /* Some ARM_IDLECT1 bit shifts - used in struct arm_idlect1_clk */
  31 #define IDL_CLKOUT_ARM_SHIFT                    12
  32 #define IDLTIM_ARM_SHIFT                        9
  33 #define IDLAPI_ARM_SHIFT                        8
  34 #define IDLIF_ARM_SHIFT                         6
  35 #define IDLLB_ARM_SHIFT                         4       /* undocumented? */
  36 #define OMAP1510_IDLLCD_ARM_SHIFT               3       /* undocumented? */
  37 #define IDLPER_ARM_SHIFT                        2
  38 #define IDLXORP_ARM_SHIFT                       1
  39 #define IDLWDT_ARM_SHIFT                        0
  40
  41 /* Some MOD_CONF_CTRL_0 bit shifts - used in struct clk.enable_bit */
  42 #define CONF_MOD_UART3_CLK_MODE_R               31
  43 #define CONF_MOD_UART2_CLK_MODE_R               30
  44 #define CONF_MOD_UART1_CLK_MODE_R               29
  45 #define CONF_MOD_MMC_SD_CLK_REQ_R               23
  46 #define CONF_MOD_MCBSP3_AUXON                   20
  47
  48 /* Some MOD_CONF_CTRL_1 bit shifts - used in struct clk.enable_bit */
  49 #define CONF_MOD_SOSSI_CLK_EN_R                 16
  50
  51 /* Some OTG_SYSCON_2-specific bit fields */
  52 #define OTG_SYSCON_2_UHOST_EN_SHIFT             8
  53
  54 /* Some SOFT_REQ_REG bit fields - used in struct clk.enable_bit */
  55 #define SOFT_MMC2_DPLL_REQ_SHIFT        13
  56 #define SOFT_MMC_DPLL_REQ_SHIFT         12
  57 #define SOFT_UART3_DPLL_REQ_SHIFT       11
  58 #define SOFT_UART2_DPLL_REQ_SHIFT       10
  59 #define SOFT_UART1_DPLL_REQ_SHIFT       9
  60 #define SOFT_USB_OTG_DPLL_REQ_SHIFT     8
  61 #define SOFT_CAM_DPLL_REQ_SHIFT         7
  62 #define SOFT_COM_MCKO_REQ_SHIFT         6
  63 #define SOFT_PERIPH_REQ_SHIFT           5       /* sys_ck gate for UART2 ? */
  64 #define USB_REQ_EN_SHIFT                4
  65 #define SOFT_USB_REQ_SHIFT              3       /* sys_ck gate for USB host? */
  66 #define SOFT_SDW_REQ_SHIFT              2       /* sys_ck gate for Bluetooth? */
  67 #define SOFT_COM_REQ_SHIFT              1       /* sys_ck gate for com proc? */
  68 #define SOFT_DPLL_REQ_SHIFT             0
  69
  70 /*
  71  * Omap1 clocks
  72  */
  73
  74 static struct clk ck_ref = {
  75         .name           = "ck_ref",
  76         .ops            = &clkops_null,
  77         .rate           = 12000000,
  78 };
  79
  80 static struct clk ck_dpll1 = {
  81         .name           = "ck_dpll1",
  82         .ops            = &clkops_null,
  83         .parent         = &ck_ref,
  84 };
  85
  86 /*
  87  * FIXME: This clock seems to be necessary but no-one has asked for its
  88  * activation.  [ FIX: SoSSI, SSR ]
  89  */
  90 static struct arm_idlect1_clk ck_dpll1out = {
  91         .clk = {
  92                 .name           = "ck_dpll1out",
  93                 .ops            = &clkops_generic,
  94                 .parent         = &ck_dpll1,
  95                 .flags          = CLOCK_IDLE_CONTROL | ENABLE_REG_32BIT |
  96                                   ENABLE_ON_INIT,
  97                 .enable_reg     = OMAP1_IO_ADDRESS(ARM_IDLECT2),
  98                 .enable_bit     = EN_CKOUT_ARM,
  99                 .recalc         = &followparent_recalc,
 100         },
 101         .idlect_shift   = IDL_CLKOUT_ARM_SHIFT,
 102 };
 103
 104 static struct clk sossi_ck = {
 105         .name           = "ck_sossi",
 106         .ops            = &clkops_generic,
 107         .parent         = &ck_dpll1out.clk,
 108         .flags          = CLOCK_NO_IDLE_PARENT | ENABLE_REG_32BIT,
 109         .enable_reg     = OMAP1_IO_ADDRESS(MOD_CONF_CTRL_1),
 110         .enable_bit     = CONF_MOD_SOSSI_CLK_EN_R,
 111         .recalc         = &omap1_sossi_recalc,
 112         .set_rate       = &omap1_set_sossi_rate,
 113 };
 114
 115 static struct clk arm_ck = {
 116         .name           = "arm_ck",
 117         .ops            = &clkops_null,
 118         .parent         = &ck_dpll1,
 119         .rate_offset    = CKCTL_ARMDIV_OFFSET,
 120         .recalc         = &omap1_ckctl_recalc,
 121         .round_rate     = omap1_clk_round_rate_ckctl_arm,
 122         .set_rate       = omap1_clk_set_rate_ckctl_arm,
 123 };
 124
 125 static struct arm_idlect1_clk armper_ck = {
 126         .clk = {
 127                 .name           = "armper_ck",
 128                 .ops            = &clkops_generic,
 129                 .parent         = &ck_dpll1,
 130                 .flags          = CLOCK_IDLE_CONTROL,
 131                 .enable_reg     = OMAP1_IO_ADDRESS(ARM_IDLECT2),
 132                 .enable_bit     = EN_PERCK,
 133                 .rate_offset    = CKCTL_PERDIV_OFFSET,
 134                 .recalc         = &omap1_ckctl_recalc,
 135                 .round_rate     = omap1_clk_round_rate_ckctl_arm,
 136                 .set_rate       = omap1_clk_set_rate_ckctl_arm,
 137         },
 138         .idlect_shift   = IDLPER_ARM_SHIFT,
 139 };
 140
 141 /*
 142  * FIXME: This clock seems to be necessary but no-one has asked for its
 143  * activation.  [ GPIO code for 1510 ]
 144  */
 145 static struct clk arm_gpio_ck = {
 146         .name           = "arm_gpio_ck",
 147         .ops            = &clkops_generic,
 148         .parent         = &ck_dpll1,
 149         .flags          = ENABLE_ON_INIT,
 150         .enable_reg     = OMAP1_IO_ADDRESS(ARM_IDLECT2),
 151         .enable_bit     = EN_GPIOCK,
 152         .recalc         = &followparent_recalc,
 153 };
 154
 155 static struct arm_idlect1_clk armxor_ck = {
 156         .clk = {
 157                 .name           = "armxor_ck",
 158                 .ops            = &clkops_generic,
 159                 .parent         = &ck_ref,
 160                 .flags          = CLOCK_IDLE_CONTROL,
 161                 .enable_reg     = OMAP1_IO_ADDRESS(ARM_IDLECT2),
 162                 .enable_bit     = EN_XORPCK,
 163                 .recalc         = &followparent_recalc,
 164         },
 165         .idlect_shift   = IDLXORP_ARM_SHIFT,
 166 };
 167
 168 static struct arm_idlect1_clk armtim_ck = {
 169         .clk = {
 170                 .name           = "armtim_ck",
 171                 .ops            = &clkops_generic,
 172                 .parent         = &ck_ref,
 173                 .flags          = CLOCK_IDLE_CONTROL,
 174                 .enable_reg     = OMAP1_IO_ADDRESS(ARM_IDLECT2),
 175                 .enable_bit     = EN_TIMCK,
 176                 .recalc         = &followparent_recalc,
 177         },
 178         .idlect_shift   = IDLTIM_ARM_SHIFT,
 179 };
 180
 181 static struct arm_idlect1_clk armwdt_ck = {
 182         .clk = {
 183                 .name           = "armwdt_ck",
 184                 .ops            = &clkops_generic,
 185                 .parent         = &ck_ref,
 186                 .flags          = CLOCK_IDLE_CONTROL,
 187                 .enable_reg     = OMAP1_IO_ADDRESS(ARM_IDLECT2),
 188                 .enable_bit     = EN_WDTCK,
 189                 .fixed_div      = 14,
 190                 .recalc         = &omap_fixed_divisor_recalc,
 191         },
 192         .idlect_shift   = IDLWDT_ARM_SHIFT,
 193 };
 194
 195 static struct clk arminth_ck16xx = {
 196         .name           = "arminth_ck",
 197         .ops            = &clkops_null,
 198         .parent         = &arm_ck,
 199         .recalc         = &followparent_recalc,
 200         /* Note: On 16xx the frequency can be divided by 2 by programming
 201          * ARM_CKCTL:ARM_INTHCK_SEL(14) to 1
 202          *
 203          * 1510 version is in TC clocks.
 204          */
 205 };
 206
 207 static struct clk dsp_ck = {
 208         .name           = "dsp_ck",
 209         .ops            = &clkops_generic,
 210         .parent         = &ck_dpll1,
 211         .enable_reg     = OMAP1_IO_ADDRESS(ARM_CKCTL),
 212         .enable_bit     = EN_DSPCK,
 213         .rate_offset    = CKCTL_DSPDIV_OFFSET,
 214         .recalc         = &omap1_ckctl_recalc,
 215         .round_rate     = omap1_clk_round_rate_ckctl_arm,
 216         .set_rate       = omap1_clk_set_rate_ckctl_arm,
 217 };
 218
 219 static struct clk dspmmu_ck = {
 220         .name           = "dspmmu_ck",
 221         .ops            = &clkops_null,
 222         .parent         = &ck_dpll1,
 223         .rate_offset    = CKCTL_DSPMMUDIV_OFFSET,
 224         .recalc         = &omap1_ckctl_recalc,
 225         .round_rate     = omap1_clk_round_rate_ckctl_arm,
 226         .set_rate       = omap1_clk_set_rate_ckctl_arm,
 227 };
 228
 229 static struct clk dspper_ck = {
 230         .name           = "dspper_ck",
 231         .ops            = &clkops_dspck,
 232         .parent         = &ck_dpll1,
 233         .enable_reg     = DSP_IDLECT2,
 234         .enable_bit     = EN_PERCK,
 235         .rate_offset    = CKCTL_PERDIV_OFFSET,
 236         .recalc         = &omap1_ckctl_recalc_dsp_domain,
 237         .round_rate     = omap1_clk_round_rate_ckctl_arm,
 238         .set_rate       = &omap1_clk_set_rate_dsp_domain,
 239 };
 240
 241 static struct clk dspxor_ck = {
 242         .name           = "dspxor_ck",
 243         .ops            = &clkops_dspck,
 244         .parent         = &ck_ref,
 245         .enable_reg     = DSP_IDLECT2,
 246         .enable_bit     = EN_XORPCK,
 247         .recalc         = &followparent_recalc,
 248 };
 249
 250 static struct clk dsptim_ck = {
 251         .name           = "dsptim_ck",
 252         .ops            = &clkops_dspck,
 253         .parent         = &ck_ref,
 254         .enable_reg     = DSP_IDLECT2,
 255         .enable_bit     = EN_DSPTIMCK,
 256         .recalc         = &followparent_recalc,
 257 };
 258
 259 static struct arm_idlect1_clk tc_ck = {
 260         .clk = {
 261                 .name           = "tc_ck",
 262                 .ops            = &clkops_null,
 263                 .parent         = &ck_dpll1,
 264                 .flags          = CLOCK_IDLE_CONTROL,
 265                 .rate_offset    = CKCTL_TCDIV_OFFSET,
 266                 .recalc         = &omap1_ckctl_recalc,
 267                 .round_rate     = omap1_clk_round_rate_ckctl_arm,
 268                 .set_rate       = omap1_clk_set_rate_ckctl_arm,
 269         },
 270         .idlect_shift   = IDLIF_ARM_SHIFT,
 271 };
 272
 273 static struct clk arminth_ck1510 = {
 274         .name           = "arminth_ck",
 275         .ops            = &clkops_null,
 276         .parent         = &tc_ck.clk,
 277         .recalc         = &followparent_recalc,
 278         /* Note: On 1510 the frequency follows TC_CK
 279          *
 280          * 16xx version is in MPU clocks.
 281          */
 282 };
 283
 284 static struct clk tipb_ck = {
 285         /* No-idle controlled by "tc_ck" */
 286         .name           = "tipb_ck",
 287         .ops            = &clkops_null,
 288         .parent         = &tc_ck.clk,
 289         .recalc         = &followparent_recalc,
 290 };
 291
 292 static struct clk l3_ocpi_ck = {
 293         /* No-idle controlled by "tc_ck" */
 294         .name           = "l3_ocpi_ck",
 295         .ops            = &clkops_generic,
 296         .parent         = &tc_ck.clk,
 297         .enable_reg     = OMAP1_IO_ADDRESS(ARM_IDLECT3),
 298         .enable_bit     = EN_OCPI_CK,
 299         .recalc         = &followparent_recalc,
 300 };
 301
 302 static struct clk tc1_ck = {
 303         .name           = "tc1_ck",
 304         .ops            = &clkops_generic,
 305         .parent         = &tc_ck.clk,
 306         .enable_reg     = OMAP1_IO_ADDRESS(ARM_IDLECT3),
 307         .enable_bit     = EN_TC1_CK,
 308         .recalc         = &followparent_recalc,
 309 };
 310
 311 /*
 312  * FIXME: This clock seems to be necessary but no-one has asked for its
 313  * activation.  [ pm.c (SRAM), CCP, Camera ]
 314  */
 315 static struct clk tc2_ck = {
 316         .name           = "tc2_ck",
 317         .ops            = &clkops_generic,
 318         .parent         = &tc_ck.clk,
 319         .flags          = ENABLE_ON_INIT,
 320         .enable_reg     = OMAP1_IO_ADDRESS(ARM_IDLECT3),
 321         .enable_bit     = EN_TC2_CK,
 322         .recalc         = &followparent_recalc,
 323 };
 324
 325 static struct clk dma_ck = {
 326         /* No-idle controlled by "tc_ck" */
 327         .name           = "dma_ck",
 328         .ops            = &clkops_null,
 329         .parent         = &tc_ck.clk,
 330         .recalc         = &followparent_recalc,
 331 };
 332
 333 static struct clk dma_lcdfree_ck = {
 334         .name           = "dma_lcdfree_ck",
 335         .ops            = &clkops_null,
 336         .parent         = &tc_ck.clk,
 337         .recalc         = &followparent_recalc,
 338 };
 339
 340 static struct arm_idlect1_clk api_ck = {
 341         .clk = {
 342                 .name           = "api_ck",
 343                 .ops            = &clkops_generic,
 344                 .parent         = &tc_ck.clk,
 345                 .flags          = CLOCK_IDLE_CONTROL,
 346                 .enable_reg     = OMAP1_IO_ADDRESS(ARM_IDLECT2),
 347                 .enable_bit     = EN_APICK,
 348                 .recalc         = &followparent_recalc,
 349         },
 350         .idlect_shift   = IDLAPI_ARM_SHIFT,
 351 };
 352
 353 static struct arm_idlect1_clk lb_ck = {
 354         .clk = {
 355                 .name           = "lb_ck",
 356                 .ops            = &clkops_generic,
 357                 .parent         = &tc_ck.clk,
 358                 .flags          = CLOCK_IDLE_CONTROL,
 359                 .enable_reg     = OMAP1_IO_ADDRESS(ARM_IDLECT2),
 360                 .enable_bit     = EN_LBCK,
 361                 .recalc         = &followparent_recalc,
 362         },
 363         .idlect_shift   = IDLLB_ARM_SHIFT,
 364 };
 365
 366 static struct clk rhea1_ck = {
 367         .name           = "rhea1_ck",
 368         .ops            = &clkops_null,
 369         .parent         = &tc_ck.clk,
 370         .recalc         = &followparent_recalc,
 371 };
 372
 373 static struct clk rhea2_ck = {
 374         .name           = "rhea2_ck",
 375         .ops            = &clkops_null,
 376         .parent         = &tc_ck.clk,
 377         .recalc         = &followparent_recalc,
 378 };
 379
 380 static struct clk lcd_ck_16xx = {
 381         .name           = "lcd_ck",
 382         .ops            = &clkops_generic,
 383         .parent         = &ck_dpll1,
 384         .enable_reg     = OMAP1_IO_ADDRESS(ARM_IDLECT2),
 385         .enable_bit     = EN_LCDCK,
 386         .rate_offset    = CKCTL_LCDDIV_OFFSET,
 387         .recalc         = &omap1_ckctl_recalc,
 388         .round_rate     = omap1_clk_round_rate_ckctl_arm,
 389         .set_rate       = omap1_clk_set_rate_ckctl_arm,
 390 };
 391
 392 static struct arm_idlect1_clk lcd_ck_1510 = {
 393         .clk = {
 394                 .name           = "lcd_ck",
 395                 .ops            = &clkops_generic,
 396                 .parent         = &ck_dpll1,
 397                 .flags          = CLOCK_IDLE_CONTROL,
 398                 .enable_reg     = OMAP1_IO_ADDRESS(ARM_IDLECT2),
 399                 .enable_bit     = EN_LCDCK,
 400                 .rate_offset    = CKCTL_LCDDIV_OFFSET,
 401                 .recalc         = &omap1_ckctl_recalc,
 402                 .round_rate     = omap1_clk_round_rate_ckctl_arm,
 403                 .set_rate       = omap1_clk_set_rate_ckctl_arm,
 404         },
 405         .idlect_shift   = OMAP1510_IDLLCD_ARM_SHIFT,
 406 };
 407
 408 /*
 409  * XXX The enable_bit here is misused - it simply switches between 12MHz
 410  * and 48MHz.  Reimplement with clksel.
 411  *
 412  * XXX does this need SYSC register handling?
 413  */
 414 static struct clk uart1_1510 = {
 415         .name           = "uart1_ck",
 416         .ops            = &clkops_null,
 417         /* Direct from ULPD, no real parent */
 418         .parent         = &armper_ck.clk,
 419         .rate           = 12000000,
 420         .flags          = ENABLE_REG_32BIT | CLOCK_NO_IDLE_PARENT,
 421         .enable_reg     = OMAP1_IO_ADDRESS(MOD_CONF_CTRL_0),
 422         .enable_bit     = CONF_MOD_UART1_CLK_MODE_R,
 423         .set_rate       = &omap1_set_uart_rate,
 424         .recalc         = &omap1_uart_recalc,
 425 };
 426
 427 /*
 428  * XXX The enable_bit here is misused - it simply switches between 12MHz
 429  * and 48MHz.  Reimplement with clksel.
 430  *
 431  * XXX SYSC register handling does not belong in the clock framework
 432  */
 433 static struct uart_clk uart1_16xx = {
 434         .clk    = {
 435                 .name           = "uart1_ck",
 436                 .ops            = &clkops_uart_16xx,
 437                 /* Direct from ULPD, no real parent */
 438                 .parent         = &armper_ck.clk,
 439                 .rate           = 48000000,
 440                 .flags          = ENABLE_REG_32BIT | CLOCK_NO_IDLE_PARENT,
 441                 .enable_reg     = OMAP1_IO_ADDRESS(MOD_CONF_CTRL_0),
 442                 .enable_bit     = CONF_MOD_UART1_CLK_MODE_R,
 443         },
 444         .sysc_addr      = 0xfffb0054,
 445 };
 446
 447 /*
 448  * XXX The enable_bit here is misused - it simply switches between 12MHz
 449  * and 48MHz.  Reimplement with clksel.
 450  *
 451  * XXX does this need SYSC register handling?
 452  */
 453 static struct clk uart2_ck = {
 454         .name           = "uart2_ck",
 455         .ops            = &clkops_null,
 456         /* Direct from ULPD, no real parent */
 457         .parent         = &armper_ck.clk,
 458         .rate           = 12000000,
 459         .flags          = ENABLE_REG_32BIT | CLOCK_NO_IDLE_PARENT,
 460         .enable_reg     = OMAP1_IO_ADDRESS(MOD_CONF_CTRL_0),
 461         .enable_bit     = CONF_MOD_UART2_CLK_MODE_R,
 462         .set_rate       = &omap1_set_uart_rate,
 463         .recalc         = &omap1_uart_recalc,
 464 };
 465
 466 /*
 467  * XXX The enable_bit here is misused - it simply switches between 12MHz
 468  * and 48MHz.  Reimplement with clksel.
 469  *
 470  * XXX does this need SYSC register handling?
 471  */
 472 static struct clk uart3_1510 = {
 473         .name           = "uart3_ck",
 474         .ops            = &clkops_null,
 475         /* Direct from ULPD, no real parent */
 476         .parent         = &armper_ck.clk,
 477         .rate           = 12000000,
 478         .flags          = ENABLE_REG_32BIT | CLOCK_NO_IDLE_PARENT,
 479         .enable_reg     = OMAP1_IO_ADDRESS(MOD_CONF_CTRL_0),
 480         .enable_bit     = CONF_MOD_UART3_CLK_MODE_R,
 481         .set_rate       = &omap1_set_uart_rate,
 482         .recalc         = &omap1_uart_recalc,
 483 };
 484
 485 /*
 486  * XXX The enable_bit here is misused - it simply switches between 12MHz
 487  * and 48MHz.  Reimplement with clksel.
 488  *
 489  * XXX SYSC register handling does not belong in the clock framework
 490  */
 491 static struct uart_clk uart3_16xx = {
 492         .clk    = {
 493                 .name           = "uart3_ck",
 494                 .ops            = &clkops_uart_16xx,
 495                 /* Direct from ULPD, no real parent */
 496                 .parent         = &armper_ck.clk,
 497                 .rate           = 48000000,
 498                 .flags          = ENABLE_REG_32BIT | CLOCK_NO_IDLE_PARENT,
 499                 .enable_reg     = OMAP1_IO_ADDRESS(MOD_CONF_CTRL_0),
 500                 .enable_bit     = CONF_MOD_UART3_CLK_MODE_R,
 501         },
 502         .sysc_addr      = 0xfffb9854,
 503 };
 504
 505 static struct clk usb_clko = {  /* 6 MHz output on W4_USB_CLKO */
 506         .name           = "usb_clko",
 507         .ops            = &clkops_generic,
 508         /* Direct from ULPD, no parent */
 509         .rate           = 6000000,
 510         .flags          = ENABLE_REG_32BIT,
 511         .enable_reg     = OMAP1_IO_ADDRESS(ULPD_CLOCK_CTRL),
 512         .enable_bit     = USB_MCLK_EN_BIT,
 513 };
 514
 515 static struct clk usb_hhc_ck1510 = {
 516         .name           = "usb_hhc_ck",
 517         .ops            = &clkops_generic,
 518         /* Direct from ULPD, no parent */
 519         .rate           = 48000000, /* Actually 2 clocks, 12MHz and 48MHz */
 520         .flags          = ENABLE_REG_32BIT,
 521         .enable_reg     = OMAP1_IO_ADDRESS(MOD_CONF_CTRL_0),
 522         .enable_bit     = USB_HOST_HHC_UHOST_EN,
 523 };
 524
 525 static struct clk usb_hhc_ck16xx = {
 526         .name           = "usb_hhc_ck",
 527         .ops            = &clkops_generic,
 528         /* Direct from ULPD, no parent */
 529         .rate           = 48000000,
 530         /* OTG_SYSCON_2.OTG_PADEN == 0 (not 1510-compatible) */
 531         .flags          = ENABLE_REG_32BIT,
 532         .enable_reg     = OMAP1_IO_ADDRESS(OTG_BASE + 0x08), /* OTG_SYSCON_2 */
 533         .enable_bit     = OTG_SYSCON_2_UHOST_EN_SHIFT
 534 };
 535
 536 static struct clk usb_dc_ck = {
 537         .name           = "usb_dc_ck",
 538         .ops            = &clkops_generic,
 539         /* Direct from ULPD, no parent */
 540         .rate           = 48000000,
 541         .enable_reg     = OMAP1_IO_ADDRESS(SOFT_REQ_REG),
 542         .enable_bit     = USB_REQ_EN_SHIFT,
 543 };
 544
 545 static struct clk usb_dc_ck7xx = {
 546         .name           = "usb_dc_ck",
 547         .ops            = &clkops_generic,
 548         /* Direct from ULPD, no parent */
 549         .rate           = 48000000,
 550         .enable_reg     = OMAP1_IO_ADDRESS(SOFT_REQ_REG),
 551         .enable_bit     = SOFT_USB_OTG_DPLL_REQ_SHIFT,
 552 };
 553
 554 static struct clk mclk_1510 = {
 555         .name           = "mclk",
 556         .ops            = &clkops_generic,
 557         /* Direct from ULPD, no parent. May be enabled by ext hardware. */
 558         .rate           = 12000000,
 559         .enable_reg     = OMAP1_IO_ADDRESS(SOFT_REQ_REG),
 560         .enable_bit     = SOFT_COM_MCKO_REQ_SHIFT,
 561 };
 562
 563 static struct clk mclk_16xx = {
 564         .name           = "mclk",
 565         .ops            = &clkops_generic,
 566         /* Direct from ULPD, no parent. May be enabled by ext hardware. */
 567         .enable_reg     = OMAP1_IO_ADDRESS(COM_CLK_DIV_CTRL_SEL),
 568         .enable_bit     = COM_ULPD_PLL_CLK_REQ,
 569         .set_rate       = &omap1_set_ext_clk_rate,
 570         .round_rate     = &omap1_round_ext_clk_rate,
 571         .init           = &omap1_init_ext_clk,
 572 };
 573
 574 static struct clk bclk_1510 = {
 575         .name           = "bclk",
 576         .ops            = &clkops_generic,
 577         /* Direct from ULPD, no parent. May be enabled by ext hardware. */
 578         .rate           = 12000000,
 579 };
 580
 581 static struct clk bclk_16xx = {
 582         .name           = "bclk",
 583         .ops            = &clkops_generic,
 584         /* Direct from ULPD, no parent. May be enabled by ext hardware. */
 585         .enable_reg     = OMAP1_IO_ADDRESS(SWD_CLK_DIV_CTRL_SEL),
 586         .enable_bit     = SWD_ULPD_PLL_CLK_REQ,
 587         .set_rate       = &omap1_set_ext_clk_rate,
 588         .round_rate     = &omap1_round_ext_clk_rate,
 589         .init           = &omap1_init_ext_clk,
 590 };
 591
 592 static struct clk mmc1_ck = {
 593         .name           = "mmc1_ck",
 594         .ops            = &clkops_generic,
 595         /* Functional clock is direct from ULPD, interface clock is ARMPER */
 596         .parent         = &armper_ck.clk,
 597         .rate           = 48000000,
 598         .flags          = ENABLE_REG_32BIT | CLOCK_NO_IDLE_PARENT,
 599         .enable_reg     = OMAP1_IO_ADDRESS(MOD_CONF_CTRL_0),
 600         .enable_bit     = CONF_MOD_MMC_SD_CLK_REQ_R,
 601 };
 602
 603 /*
 604  * XXX MOD_CONF_CTRL_0 bit 20 is defined in the 1510 TRM as
 605  * CONF_MOD_MCBSP3_AUXON ??
 606  */
 607 static struct clk mmc2_ck = {
 608         .name           = "mmc2_ck",
 609         .ops            = &clkops_generic,
 610         /* Functional clock is direct from ULPD, interface clock is ARMPER */
 611         .parent         = &armper_ck.clk,
 612         .rate           = 48000000,
 613         .flags          = ENABLE_REG_32BIT | CLOCK_NO_IDLE_PARENT,
 614         .enable_reg     = OMAP1_IO_ADDRESS(MOD_CONF_CTRL_0),
 615         .enable_bit     = 20,
 616 };
 617
 618 static struct clk mmc3_ck = {
 619         .name           = "mmc3_ck",
 620         .ops            = &clkops_generic,
 621         /* Functional clock is direct from ULPD, interface clock is ARMPER */
 622         .parent         = &armper_ck.clk,
 623         .rate           = 48000000,
 624         .flags          = ENABLE_REG_32BIT | CLOCK_NO_IDLE_PARENT,
 625         .enable_reg     = OMAP1_IO_ADDRESS(SOFT_REQ_REG),
 626         .enable_bit     = SOFT_MMC_DPLL_REQ_SHIFT,
 627 };
 628
 629 static struct clk virtual_ck_mpu = {
 630         .name           = "mpu",
 631         .ops            = &clkops_null,
 632         .parent         = &arm_ck, /* Is smarter alias for */
 633         .recalc         = &followparent_recalc,
 634         .set_rate       = &omap1_select_table_rate,
 635         .round_rate     = &omap1_round_to_table_rate,
 636 };
 637
 638 /* virtual functional clock domain for I2C. Just for making sure that ARMXOR_CK
 639 remains active during MPU idle whenever this is enabled */
 640 static struct clk i2c_fck = {
 641         .name           = "i2c_fck",
 642         .ops            = &clkops_null,
 643         .flags          = CLOCK_NO_IDLE_PARENT,
 644         .parent         = &armxor_ck.clk,
 645         .recalc         = &followparent_recalc,
 646 };
 647
 648 static struct clk i2c_ick = {
 649         .name           = "i2c_ick",
 650         .ops            = &clkops_null,
 651         .flags          = CLOCK_NO_IDLE_PARENT,
 652         .parent         = &armper_ck.clk,
 653         .recalc         = &followparent_recalc,
 654 };
 655
 656 /*
 657  * clkdev integration
 658  */
 659
 660 static struct omap_clk omap_clks[] = {
 661         /* non-ULPD clocks */
 662         CLK(NULL,       "ck_ref",       &ck_ref,        CK_16XX | CK_1510 | CK_310 | CK_7XX),
 663         CLK(NULL,       "ck_dpll1",     &ck_dpll1,      CK_16XX | CK_1510 | CK_310 | CK_7XX),
 664         /* CK_GEN1 clocks */
 665         CLK(NULL,       "ck_dpll1out",  &ck_dpll1out.clk, CK_16XX),
 666         CLK(NULL,       "ck_sossi",     &sossi_ck,      CK_16XX),
 667         CLK(NULL,       "arm_ck",       &arm_ck,        CK_16XX | CK_1510 | CK_310),
 668         CLK(NULL,       "armper_ck",    &armper_ck.clk, CK_16XX | CK_1510 | CK_310),
 669         CLK(NULL,       "arm_gpio_ck",  &arm_gpio_ck,   CK_1510 | CK_310),
 670         CLK(NULL,       "armxor_ck",    &armxor_ck.clk, CK_16XX | CK_1510 | CK_310 | CK_7XX),
 671         CLK(NULL,       "armtim_ck",    &armtim_ck.clk, CK_16XX | CK_1510 | CK_310),
 672         CLK("omap_wdt", "fck",          &armwdt_ck.clk, CK_16XX | CK_1510 | CK_310),
 673         CLK("omap_wdt", "ick",          &armper_ck.clk, CK_16XX),
 674         CLK("omap_wdt", "ick",          &dummy_ck,      CK_1510 | CK_310),
 675         CLK(NULL,       "arminth_ck",   &arminth_ck1510, CK_1510 | CK_310),
 676         CLK(NULL,       "arminth_ck",   &arminth_ck16xx, CK_16XX),
 677         /* CK_GEN2 clocks */
 678         CLK(NULL,       "dsp_ck",       &dsp_ck,        CK_16XX | CK_1510 | CK_310),
 679         CLK(NULL,       "dspmmu_ck",    &dspmmu_ck,     CK_16XX | CK_1510 | CK_310),
 680         CLK(NULL,       "dspper_ck",    &dspper_ck,     CK_16XX | CK_1510 | CK_310),
 681         CLK(NULL,       "dspxor_ck",    &dspxor_ck,     CK_16XX | CK_1510 | CK_310),
 682         CLK(NULL,       "dsptim_ck",    &dsptim_ck,     CK_16XX | CK_1510 | CK_310),
 683         /* CK_GEN3 clocks */
 684         CLK(NULL,       "tc_ck",        &tc_ck.clk,     CK_16XX | CK_1510 | CK_310 | CK_7XX),
 685         CLK(NULL,       "tipb_ck",      &tipb_ck,       CK_1510 | CK_310),
 686         CLK(NULL,       "l3_ocpi_ck",   &l3_ocpi_ck,    CK_16XX | CK_7XX),
 687         CLK(NULL,       "tc1_ck",       &tc1_ck,        CK_16XX),
 688         CLK(NULL,       "tc2_ck",       &tc2_ck,        CK_16XX),
 689         CLK(NULL,       "dma_ck",       &dma_ck,        CK_16XX | CK_1510 | CK_310),
 690         CLK(NULL,       "dma_lcdfree_ck", &dma_lcdfree_ck, CK_16XX),
 691         CLK(NULL,       "api_ck",       &api_ck.clk,    CK_16XX | CK_1510 | CK_310 | CK_7XX),
 692         CLK(NULL,       "lb_ck",        &lb_ck.clk,     CK_1510 | CK_310),
 693         CLK(NULL,       "rhea1_ck",     &rhea1_ck,      CK_16XX),
 694         CLK(NULL,       "rhea2_ck",     &rhea2_ck,      CK_16XX),
 695         CLK(NULL,       "lcd_ck",       &lcd_ck_16xx,   CK_16XX | CK_7XX),
 696         CLK(NULL,       "lcd_ck",       &lcd_ck_1510.clk, CK_1510 | CK_310),
 697         /* ULPD clocks */
 698         CLK(NULL,       "uart1_ck",     &uart1_1510,    CK_1510 | CK_310),
 699         CLK(NULL,       "uart1_ck",     &uart1_16xx.clk, CK_16XX),
 700         CLK(NULL,       "uart2_ck",     &uart2_ck,      CK_16XX | CK_1510 | CK_310),
 701         CLK(NULL,       "uart3_ck",     &uart3_1510,    CK_1510 | CK_310),
 702         CLK(NULL,       "uart3_ck",     &uart3_16xx.clk, CK_16XX),
 703         CLK(NULL,       "usb_clko",     &usb_clko,      CK_16XX | CK_1510 | CK_310),
 704         CLK(NULL,       "usb_hhc_ck",   &usb_hhc_ck1510, CK_1510 | CK_310),
 705         CLK(NULL,       "usb_hhc_ck",   &usb_hhc_ck16xx, CK_16XX),
 706         CLK(NULL,       "usb_dc_ck",    &usb_dc_ck,     CK_16XX),
 707         CLK(NULL,       "usb_dc_ck",    &usb_dc_ck7xx,  CK_7XX),
 708         CLK(NULL,       "mclk",         &mclk_1510,     CK_1510 | CK_310),
 709         CLK(NULL,       "mclk",         &mclk_16xx,     CK_16XX),
 710         CLK(NULL,       "bclk",         &bclk_1510,     CK_1510 | CK_310),
 711         CLK(NULL,       "bclk",         &bclk_16xx,     CK_16XX),
 712         CLK("mmci-omap.0", "fck",       &mmc1_ck,       CK_16XX | CK_1510 | CK_310),
 713         CLK("mmci-omap.0", "fck",       &mmc3_ck,       CK_7XX),
 714         CLK("mmci-omap.0", "ick",       &armper_ck.clk, CK_16XX | CK_1510 | CK_310 | CK_7XX),
 715         CLK("mmci-omap.1", "fck",       &mmc2_ck,       CK_16XX),
 716         CLK("mmci-omap.1", "ick",       &armper_ck.clk, CK_16XX),
 717         /* Virtual clocks */
 718         CLK(NULL,       "mpu",          &virtual_ck_mpu, CK_16XX | CK_1510 | CK_310),
 719         CLK("i2c_omap.1", "fck",        &i2c_fck,       CK_16XX | CK_1510 | CK_310 | CK_7XX),
 720         CLK("i2c_omap.1", "ick",        &i2c_ick,       CK_16XX),
 721         CLK("i2c_omap.1", "ick",        &dummy_ck,      CK_1510 | CK_310 | CK_7XX),
 722         CLK("omap1_spi100k.1", "fck",   &dummy_ck,      CK_7XX),
 723         CLK("omap1_spi100k.1", "ick",   &dummy_ck,      CK_7XX),
 724         CLK("omap1_spi100k.2", "fck",   &dummy_ck,      CK_7XX),
 725         CLK("omap1_spi100k.2", "ick",   &dummy_ck,      CK_7XX),
 726         CLK("omap_uwire", "fck",        &armxor_ck.clk, CK_16XX | CK_1510 | CK_310),
 727         CLK("omap-mcbsp.1", "ick",      &dspper_ck,     CK_16XX),
 728         CLK("omap-mcbsp.1", "ick",      &dummy_ck,      CK_1510 | CK_310),
 729         CLK("omap-mcbsp.2", "ick",      &armper_ck.clk, CK_16XX),
 730         CLK("omap-mcbsp.2", "ick",      &dummy_ck,      CK_1510 | CK_310),
 731         CLK("omap-mcbsp.3", "ick",      &dspper_ck,     CK_16XX),
 732         CLK("omap-mcbsp.3", "ick",      &dummy_ck,      CK_1510 | CK_310),
 733         CLK("omap-mcbsp.1", "fck",      &dspxor_ck,     CK_16XX | CK_1510 | CK_310),
 734         CLK("omap-mcbsp.2", "fck",      &armper_ck.clk, CK_16XX | CK_1510 | CK_310),
 735         CLK("omap-mcbsp.3", "fck",      &dspxor_ck,     CK_16XX | CK_1510 | CK_310),
 736 };
 737
 738 /*
 739  * init
 740  */
 741
 742 static struct clk_functions omap1_clk_functions = {
 743         .clk_enable             = omap1_clk_enable,
 744         .clk_disable            = omap1_clk_disable,
 745         .clk_round_rate         = omap1_clk_round_rate,
 746         .clk_set_rate           = omap1_clk_set_rate,
 747         .clk_disable_unused     = omap1_clk_disable_unused,
 748 };
 749
 750 int __init omap1_clk_init(void)
 751 {
 752         struct omap_clk *c;
 753         const struct omap_clock_config *info;
 754         int crystal_type = 0; /* Default 12 MHz */
 755         u32 reg, cpu_mask;
 756
 757 #ifdef CONFIG_DEBUG_LL
 758         /*
 759          * Resets some clocks that may be left on from bootloader,
 760          * but leaves serial clocks on.
 761          */
 762         omap_writel(0x3 << 29, MOD_CONF_CTRL_0);
 763 #endif
 764
 765         /* USB_REQ_EN will be disabled later if necessary (usb_dc_ck) */
 766         reg = omap_readw(SOFT_REQ_REG) & (1 << 4);
 767         omap_writew(reg, SOFT_REQ_REG);
 768         if (!cpu_is_omap15xx())
 769                 omap_writew(0, SOFT_REQ_REG2);
 770
 771         clk_init(&omap1_clk_functions);
 772
 773         /* By default all idlect1 clocks are allowed to idle */
 774         arm_idlect1_mask = ~0;
 775
 776         for (c = omap_clks; c < omap_clks + ARRAY_SIZE(omap_clks); c++)
 777                 clk_preinit(c->lk.clk);
 778
 779         cpu_mask = 0;
 780         if (cpu_is_omap16xx())
 781                 cpu_mask |= CK_16XX;
 782         if (cpu_is_omap1510())
 783                 cpu_mask |= CK_1510;
 784         if (cpu_is_omap7xx())
 785                 cpu_mask |= CK_7XX;
 786         if (cpu_is_omap310())
 787                 cpu_mask |= CK_310;
 788
 789         for (c = omap_clks; c < omap_clks + ARRAY_SIZE(omap_clks); c++)
 790                 if (c->cpu & cpu_mask) {
 791                         clkdev_add(&c->lk);
 792                         clk_register(c->lk.clk);
 793                 }
 794
 795         /* Pointers to these clocks are needed by code in clock.c */
 796         api_ck_p = clk_get(NULL, "api_ck");
 797         ck_dpll1_p = clk_get(NULL, "ck_dpll1");
 798         ck_ref_p = clk_get(NULL, "ck_ref");
 799
 800         info = omap_get_config(OMAP_TAG_CLOCK, struct omap_clock_config);
 801         if (info != NULL) {
 802                 if (!cpu_is_omap15xx())
 803                         crystal_type = info->system_clock_type;
 804         }
 805
 806 #if defined(CONFIG_ARCH_OMAP730) || defined(CONFIG_ARCH_OMAP850)
 807         ck_ref.rate = 13000000;
 808 #elif defined(CONFIG_ARCH_OMAP16XX)
 809         if (crystal_type == 2)
 810                 ck_ref.rate = 19200000;
 811 #endif
 812
 813         pr_info("Clocks: ARM_SYSST: 0x%04x DPLL_CTL: 0x%04x ARM_CKCTL: "
 814                 "0x%04x\n", omap_readw(ARM_SYSST), omap_readw(DPLL_CTL),
 815                 omap_readw(ARM_CKCTL));
 816
 817         /* We want to be in syncronous scalable mode */
 818         omap_writew(0x1000, ARM_SYSST);
 819
 820 #ifdef CONFIG_OMAP_CLOCKS_SET_BY_BOOTLOADER
 821         /* Use values set by bootloader. Determine PLL rate and recalculate
 822          * dependent clocks as if kernel had changed PLL or divisors.
 823          */
 824         {
 825                 unsigned pll_ctl_val = omap_readw(DPLL_CTL);
 826
 827                 ck_dpll1.rate = ck_ref.rate; /* Base xtal rate */
 828                 if (pll_ctl_val & 0x10) {
 829                         /* PLL enabled, apply multiplier and divisor */
 830                         if (pll_ctl_val & 0xf80)
 831                                 ck_dpll1.rate *= (pll_ctl_val & 0xf80) >> 7;
 832                         ck_dpll1.rate /= ((pll_ctl_val & 0x60) >> 5) + 1;
 833                 } else {
 834                         /* PLL disabled, apply bypass divisor */
 835                         switch (pll_ctl_val & 0xc) {
 836                         case 0:
 837                                 break;
 838                         case 0x4:
 839                                 ck_dpll1.rate /= 2;
 840                                 break;
 841                         default:
 842                                 ck_dpll1.rate /= 4;
 843                                 break;
 844                         }
 845                 }
 846         }
 847 #else
 848         /* Find the highest supported frequency and enable it */
 849         if (omap1_select_table_rate(&virtual_ck_mpu, ~0)) {
 850                 printk(KERN_ERR "System frequencies not set. Check your config.\n");
 851                 /* Guess sane values (60MHz) */
 852                 omap_writew(0x2290, DPLL_CTL);
 853                 omap_writew(cpu_is_omap7xx() ? 0x3005 : 0x1005, ARM_CKCTL);
 854                 ck_dpll1.rate = 60000000;
 855         }
 856 #endif
 857         propagate_rate(&ck_dpll1);
 858         /* Cache rates for clocks connected to ck_ref (not dpll1) */
 859         propagate_rate(&ck_ref);
 860         printk(KERN_INFO "Clocking rate (xtal/DPLL1/MPU): "
 861                 "%ld.%01ld/%ld.%01ld/%ld.%01ld MHz\n",
 862                ck_ref.rate / 1000000, (ck_ref.rate / 100000) % 10,
 863                ck_dpll1.rate / 1000000, (ck_dpll1.rate / 100000) % 10,
 864                arm_ck.rate / 1000000, (arm_ck.rate / 100000) % 10);
 865
 866 #if defined(CONFIG_MACH_OMAP_PERSEUS2) || defined(CONFIG_MACH_OMAP_FSAMPLE)
 867         /* Select slicer output as OMAP input clock */
 868         omap_writew(omap_readw(OMAP7XX_PCC_UPLD_CTRL) & ~0x1, OMAP7XX_PCC_UPLD_CTRL);
 869 #endif
 870
 871         /* Amstrad Delta wants BCLK high when inactive */
 872         if (machine_is_ams_delta())
 873                 omap_writel(omap_readl(ULPD_CLOCK_CTRL) |
 874                                 (1 << SDW_MCLK_INV_BIT),
 875                                 ULPD_CLOCK_CTRL);
 876
 877         /* Turn off DSP and ARM_TIMXO. Make sure ARM_INTHCK is not divided */
 878         /* (on 730, bit 13 must not be cleared) */
 879         if (cpu_is_omap7xx())
 880                 omap_writew(omap_readw(ARM_CKCTL) & 0x2fff, ARM_CKCTL);
 881         else
 882                 omap_writew(omap_readw(ARM_CKCTL) & 0x0fff, ARM_CKCTL);
 883
 884         /* Put DSP/MPUI into reset until needed */
 885         omap_writew(0, ARM_RSTCT1);
 886         omap_writew(1, ARM_RSTCT2);
 887         omap_writew(0x400, ARM_IDLECT1);
 888
 889         /*
 890          * According to OMAP5910 Erratum SYS_DMA_1, bit DMACK_REQ (bit 8)
 891          * of the ARM_IDLECT2 register must be set to zero. The power-on
 892          * default value of this bit is one.
 893          */
 894         omap_writew(0x0000, ARM_IDLECT2);       /* Turn LCD clock off also */
 895
 896         /*
 897          * Only enable those clocks we will need, let the drivers
 898          * enable other clocks as necessary
 899          */
 900         clk_enable(&armper_ck.clk);
 901         clk_enable(&armxor_ck.clk);
 902         clk_enable(&armtim_ck.clk); /* This should be done by timer code */
 903
 904         if (cpu_is_omap15xx())
 905                 clk_enable(&arm_gpio_ck);
 906
 907         return 0;
 908 }