arch/arm/mach-omap2/clockdomains3xxx_data.c

   1 /*
   2  * OMAP3xxx clockdomains
   3  *
   4  * Copyright (C) 2008-2011 Texas Instruments, Inc.
   5  * Copyright (C) 2008-2010 Nokia Corporation
   6  *
   7  * Paul Walmsley, Jouni Högander
   8  *
   9  * This file contains clockdomains and clockdomain wakeup/sleep
  10  * dependencies for the OMAP3xxx chips.  Some notes:
  11  *
  12  * A useful validation rule for struct clockdomain: Any clockdomain
  13  * referenced by a wkdep_srcs or sleepdep_srcs array must have a
  14  * dep_bit assigned.  So wkdep_srcs/sleepdep_srcs are really just
  15  * software-controllable dependencies.  Non-software-controllable
  16  * dependencies do exist, but they are not encoded below (yet).
  17  *
  18  * The overly-specific dep_bit names are due to a bit name collision
  19  * with CM_FCLKEN_{DSP,IVA2}.  The DSP/IVA2 PM_WKDEP and CM_SLEEPDEP shift
  20  * value are the same for all powerdomains: 2
  21  *
  22  * XXX should dep_bit be a mask, so we can test to see if it is 0 as a
  23  * sanity check?
  24  * XXX encode hardware fixed wakeup dependencies -- esp. for 3430 CORE
  25  */
  26
  27 /*
  28  * To-Do List
  29  * -> Port the Sleep/Wakeup dependencies for the domains
  30  *    from the Power domain framework
  31  */
  32
  33 #include <linux/kernel.h>
  34 #include <linux/io.h>
  35
  36 #include "soc.h"
  37 #include "clockdomain.h"
  38 #include "prm2xxx_3xxx.h"
  39 #include "cm2xxx_3xxx.h"
  40 #include "cm-regbits-34xx.h"
  41 #include "prm-regbits-34xx.h"
  42
  43 /*
  44  * Clockdomain dependencies for wkdeps/sleepdeps
  45  *
  46  * XXX Hardware dependencies (e.g., dependencies that cannot be
  47  * changed in software) are not included here yet, but should be.
  48  */
  49
  50 /* OMAP3-specific possible dependencies */
  51
  52 /*
  53  * 3430ES1 PM_WKDEP_GFX: adds IVA2, removes CORE
  54  * 3430ES2 PM_WKDEP_SGX: adds IVA2, removes CORE
  55  */
  56 static struct clkdm_dep gfx_sgx_3xxx_wkdeps[] = {
  57         { .clkdm_name = "iva2_clkdm" },
  58         { .clkdm_name = "mpu_clkdm" },
  59         { .clkdm_name = "wkup_clkdm" },
  60         { NULL },
  61 };
  62
  63 static struct clkdm_dep gfx_sgx_am35x_wkdeps[] = {
  64         { .clkdm_name = "mpu_clkdm" },
  65         { .clkdm_name = "wkup_clkdm" },
  66         { NULL },
  67 };
  68
  69 /* 3430: PM_WKDEP_PER: CORE, IVA2, MPU, WKUP */
  70 static struct clkdm_dep per_wkdeps[] = {
  71         { .clkdm_name = "core_l3_clkdm" },
  72         { .clkdm_name = "core_l4_clkdm" },
  73         { .clkdm_name = "iva2_clkdm" },
  74         { .clkdm_name = "mpu_clkdm" },
  75         { .clkdm_name = "wkup_clkdm" },
  76         { NULL },
  77 };
  78
  79 static struct clkdm_dep per_am35x_wkdeps[] = {
  80         { .clkdm_name = "core_l3_clkdm" },
  81         { .clkdm_name = "core_l4_clkdm" },
  82         { .clkdm_name = "mpu_clkdm" },
  83         { .clkdm_name = "wkup_clkdm" },
  84         { NULL },
  85 };
  86
  87 /* 3430ES2: PM_WKDEP_USBHOST: CORE, IVA2, MPU, WKUP */
  88 static struct clkdm_dep usbhost_wkdeps[] = {
  89         { .clkdm_name = "core_l3_clkdm" },
  90         { .clkdm_name = "core_l4_clkdm" },
  91         { .clkdm_name = "iva2_clkdm" },
  92         { .clkdm_name = "mpu_clkdm" },
  93         { .clkdm_name = "wkup_clkdm" },
  94         { NULL },
  95 };
  96
  97 static struct clkdm_dep usbhost_am35x_wkdeps[] = {
  98         { .clkdm_name = "core_l3_clkdm" },
  99         { .clkdm_name = "core_l4_clkdm" },
 100         { .clkdm_name = "mpu_clkdm" },
 101         { .clkdm_name = "wkup_clkdm" },
 102         { NULL },
 103 };
 104
 105 /* 3430 PM_WKDEP_MPU: CORE, IVA2, DSS, PER */
 106 static struct clkdm_dep mpu_3xxx_wkdeps[] = {
 107         { .clkdm_name = "core_l3_clkdm" },
 108         { .clkdm_name = "core_l4_clkdm" },
 109         { .clkdm_name = "iva2_clkdm" },
 110         { .clkdm_name = "dss_clkdm" },
 111         { .clkdm_name = "per_clkdm" },
 112         { NULL },
 113 };
 114
 115 static struct clkdm_dep mpu_am35x_wkdeps[] = {
 116         { .clkdm_name = "core_l3_clkdm" },
 117         { .clkdm_name = "core_l4_clkdm" },
 118         { .clkdm_name = "dss_clkdm" },
 119         { .clkdm_name = "per_clkdm" },
 120         { NULL },
 121 };
 122
 123 /* 3430 PM_WKDEP_IVA2: CORE, MPU, WKUP, DSS, PER */
 124 static struct clkdm_dep iva2_wkdeps[] = {
 125         { .clkdm_name = "core_l3_clkdm" },
 126         { .clkdm_name = "core_l4_clkdm" },
 127         { .clkdm_name = "mpu_clkdm" },
 128         { .clkdm_name = "wkup_clkdm" },
 129         { .clkdm_name = "dss_clkdm" },
 130         { .clkdm_name = "per_clkdm" },
 131         { NULL },
 132 };
 133
 134 /* 3430 PM_WKDEP_CAM: IVA2, MPU, WKUP */
 135 static struct clkdm_dep cam_wkdeps[] = {
 136         { .clkdm_name = "iva2_clkdm" },
 137         { .clkdm_name = "mpu_clkdm" },
 138         { .clkdm_name = "wkup_clkdm" },
 139         { NULL },
 140 };
 141
 142 /* 3430 PM_WKDEP_DSS: IVA2, MPU, WKUP */
 143 static struct clkdm_dep dss_wkdeps[] = {
 144         { .clkdm_name = "iva2_clkdm" },
 145         { .clkdm_name = "mpu_clkdm" },
 146         { .clkdm_name = "wkup_clkdm" },
 147         { NULL },
 148 };
 149
 150 static struct clkdm_dep dss_am35x_wkdeps[] = {
 151         { .clkdm_name = "mpu_clkdm" },
 152         { .clkdm_name = "wkup_clkdm" },
 153         { NULL },
 154 };
 155
 156 /* 3430: PM_WKDEP_NEON: MPU */
 157 static struct clkdm_dep neon_wkdeps[] = {
 158         { .clkdm_name = "mpu_clkdm" },
 159         { NULL },
 160 };
 161
 162 /* Sleep dependency source arrays for OMAP3-specific clkdms */
 163
 164 /* 3430: CM_SLEEPDEP_DSS: MPU, IVA */
 165 static struct clkdm_dep dss_sleepdeps[] = {
 166         { .clkdm_name = "mpu_clkdm" },
 167         { .clkdm_name = "iva2_clkdm" },
 168         { NULL },
 169 };
 170
 171 static struct clkdm_dep dss_am35x_sleepdeps[] = {
 172         { .clkdm_name = "mpu_clkdm" },
 173         { NULL },
 174 };
 175
 176 /* 3430: CM_SLEEPDEP_PER: MPU, IVA */
 177 static struct clkdm_dep per_sleepdeps[] = {
 178         { .clkdm_name = "mpu_clkdm" },
 179         { .clkdm_name = "iva2_clkdm" },
 180         { NULL },
 181 };
 182
 183 static struct clkdm_dep per_am35x_sleepdeps[] = {
 184         { .clkdm_name = "mpu_clkdm" },
 185         { NULL },
 186 };
 187
 188 /* 3430ES2: CM_SLEEPDEP_USBHOST: MPU, IVA */
 189 static struct clkdm_dep usbhost_sleepdeps[] = {
 190         { .clkdm_name = "mpu_clkdm" },
 191         { .clkdm_name = "iva2_clkdm" },
 192         { NULL },
 193 };
 194
 195 static struct clkdm_dep usbhost_am35x_sleepdeps[] = {
 196         { .clkdm_name = "mpu_clkdm" },
 197         { NULL },
 198 };
 199
 200 /* 3430: CM_SLEEPDEP_CAM: MPU */
 201 static struct clkdm_dep cam_sleepdeps[] = {
 202         { .clkdm_name = "mpu_clkdm" },
 203         { NULL },
 204 };
 205
 206 /*
 207  * 3430ES1: CM_SLEEPDEP_GFX: MPU
 208  * 3430ES2: CM_SLEEPDEP_SGX: MPU
 209  * These can share data since they will never be present simultaneously
 210  * on the same device.
 211  */
 212 static struct clkdm_dep gfx_sgx_sleepdeps[] = {
 213         { .clkdm_name = "mpu_clkdm" },
 214         { NULL },
 215 };
 216
 217 /*
 218  * OMAP3 clockdomains
 219  */
 220
 221 static struct clockdomain mpu_3xxx_clkdm = {
 222         .name           = "mpu_clkdm",
 223         .pwrdm          = { .name = "mpu_pwrdm" },
 224         .flags          = CLKDM_CAN_HWSUP | CLKDM_CAN_FORCE_WAKEUP,
 225         .dep_bit        = OMAP3430_EN_MPU_SHIFT,
 226         .wkdep_srcs     = mpu_3xxx_wkdeps,
 227         .clktrctrl_mask = OMAP3430_CLKTRCTRL_MPU_MASK,
 228 };
 229
 230 static struct clockdomain mpu_am35x_clkdm = {
 231         .name           = "mpu_clkdm",
 232         .pwrdm          = { .name = "mpu_pwrdm" },
 233         .flags          = CLKDM_CAN_HWSUP | CLKDM_CAN_FORCE_WAKEUP,
 234         .dep_bit        = OMAP3430_EN_MPU_SHIFT,
 235         .wkdep_srcs     = mpu_am35x_wkdeps,
 236         .clktrctrl_mask = OMAP3430_CLKTRCTRL_MPU_MASK,
 237 };
 238
 239 static struct clockdomain neon_clkdm = {
 240         .name           = "neon_clkdm",
 241         .pwrdm          = { .name = "neon_pwrdm" },
 242         .flags          = CLKDM_CAN_HWSUP_SWSUP,
 243         .wkdep_srcs     = neon_wkdeps,
 244         .clktrctrl_mask = OMAP3430_CLKTRCTRL_NEON_MASK,
 245 };
 246
 247 static struct clockdomain iva2_clkdm = {
 248         .name           = "iva2_clkdm",
 249         .pwrdm          = { .name = "iva2_pwrdm" },
 250         .flags          = CLKDM_CAN_HWSUP_SWSUP,
 251         .dep_bit        = OMAP3430_PM_WKDEP_MPU_EN_IVA2_SHIFT,
 252         .wkdep_srcs     = iva2_wkdeps,
 253         .clktrctrl_mask = OMAP3430_CLKTRCTRL_IVA2_MASK,
 254 };
 255
 256 static struct clockdomain gfx_3430es1_clkdm = {
 257         .name           = "gfx_clkdm",
 258         .pwrdm          = { .name = "gfx_pwrdm" },
 259         .flags          = CLKDM_CAN_HWSUP_SWSUP,
 260         .wkdep_srcs     = gfx_sgx_3xxx_wkdeps,
 261         .sleepdep_srcs  = gfx_sgx_sleepdeps,
 262         .clktrctrl_mask = OMAP3430ES1_CLKTRCTRL_GFX_MASK,
 263 };
 264
 265 static struct clockdomain sgx_clkdm = {
 266         .name           = "sgx_clkdm",
 267         .pwrdm          = { .name = "sgx_pwrdm" },
 268         .flags          = CLKDM_CAN_HWSUP_SWSUP,
 269         .wkdep_srcs     = gfx_sgx_3xxx_wkdeps,
 270         .sleepdep_srcs  = gfx_sgx_sleepdeps,
 271         .clktrctrl_mask = OMAP3430ES2_CLKTRCTRL_SGX_MASK,
 272 };
 273
 274 static struct clockdomain sgx_am35x_clkdm = {
 275         .name           = "sgx_clkdm",
 276         .pwrdm          = { .name = "sgx_pwrdm" },
 277         .flags          = CLKDM_CAN_HWSUP_SWSUP,
 278         .wkdep_srcs     = gfx_sgx_am35x_wkdeps,
 279         .sleepdep_srcs  = gfx_sgx_sleepdeps,
 280         .clktrctrl_mask = OMAP3430ES2_CLKTRCTRL_SGX_MASK,
 281 };
 282
 283 /*
 284  * The die-to-die clockdomain was documented in the 34xx ES1 TRM, but
 285  * then that information was removed from the 34xx ES2+ TRM.  It is
 286  * unclear whether the core is still there, but the clockdomain logic
 287  * is there, and must be programmed to an appropriate state if the
 288  * CORE clockdomain is to become inactive.
 289  */
 290 static struct clockdomain d2d_clkdm = {
 291         .name           = "d2d_clkdm",
 292         .pwrdm          = { .name = "core_pwrdm" },
 293         .flags          = CLKDM_CAN_HWSUP_SWSUP,
 294         .clktrctrl_mask = OMAP3430ES1_CLKTRCTRL_D2D_MASK,
 295 };
 296
 297 /*
 298  * XXX add usecounting for clkdm dependencies, otherwise the presence
 299  * of a single dep bit for core_l3_3xxx_clkdm and core_l4_3xxx_clkdm
 300  * could cause trouble
 301  */
 302 static struct clockdomain core_l3_3xxx_clkdm = {
 303         .name           = "core_l3_clkdm",
 304         .pwrdm          = { .name = "core_pwrdm" },
 305         .flags          = CLKDM_CAN_HWSUP,
 306         .dep_bit        = OMAP3430_EN_CORE_SHIFT,
 307         .clktrctrl_mask = OMAP3430_CLKTRCTRL_L3_MASK,
 308 };
 309
 310 /*
 311  * XXX add usecounting for clkdm dependencies, otherwise the presence
 312  * of a single dep bit for core_l3_3xxx_clkdm and core_l4_3xxx_clkdm
 313  * could cause trouble
 314  */
 315 static struct clockdomain core_l4_3xxx_clkdm = {
 316         .name           = "core_l4_clkdm",
 317         .pwrdm          = { .name = "core_pwrdm" },
 318         .flags          = CLKDM_CAN_HWSUP,
 319         .dep_bit        = OMAP3430_EN_CORE_SHIFT,
 320         .clktrctrl_mask = OMAP3430_CLKTRCTRL_L4_MASK,
 321 };
 322
 323 /* Another case of bit name collisions between several registers: EN_DSS */
 324 static struct clockdomain dss_3xxx_clkdm = {
 325         .name           = "dss_clkdm",
 326         .pwrdm          = { .name = "dss_pwrdm" },
 327         .flags          = CLKDM_CAN_HWSUP_SWSUP,
 328         .dep_bit        = OMAP3430_PM_WKDEP_MPU_EN_DSS_SHIFT,
 329         .wkdep_srcs     = dss_wkdeps,
 330         .sleepdep_srcs  = dss_sleepdeps,
 331         .clktrctrl_mask = OMAP3430_CLKTRCTRL_DSS_MASK,
 332 };
 333
 334 static struct clockdomain dss_am35x_clkdm = {
 335         .name           = "dss_clkdm",
 336         .pwrdm          = { .name = "dss_pwrdm" },
 337         .flags          = CLKDM_CAN_HWSUP_SWSUP,
 338         .dep_bit        = OMAP3430_PM_WKDEP_MPU_EN_DSS_SHIFT,
 339         .wkdep_srcs     = dss_am35x_wkdeps,
 340         .sleepdep_srcs  = dss_am35x_sleepdeps,
 341         .clktrctrl_mask = OMAP3430_CLKTRCTRL_DSS_MASK,
 342 };
 343
 344 static struct clockdomain cam_clkdm = {
 345         .name           = "cam_clkdm",
 346         .pwrdm          = { .name = "cam_pwrdm" },
 347         .flags          = CLKDM_CAN_HWSUP_SWSUP,
 348         .wkdep_srcs     = cam_wkdeps,
 349         .sleepdep_srcs  = cam_sleepdeps,
 350         .clktrctrl_mask = OMAP3430_CLKTRCTRL_CAM_MASK,
 351 };
 352
 353 static struct clockdomain usbhost_clkdm = {
 354         .name           = "usbhost_clkdm",
 355         .pwrdm          = { .name = "usbhost_pwrdm" },
 356         .flags          = CLKDM_CAN_HWSUP_SWSUP,
 357         .wkdep_srcs     = usbhost_wkdeps,
 358         .sleepdep_srcs  = usbhost_sleepdeps,
 359         .clktrctrl_mask = OMAP3430ES2_CLKTRCTRL_USBHOST_MASK,
 360 };
 361
 362 static struct clockdomain usbhost_am35x_clkdm = {
 363         .name           = "usbhost_clkdm",
 364         .pwrdm          = { .name = "core_pwrdm" },
 365         .flags          = CLKDM_CAN_HWSUP_SWSUP,
 366         .wkdep_srcs     = usbhost_am35x_wkdeps,
 367         .sleepdep_srcs  = usbhost_am35x_sleepdeps,
 368         .clktrctrl_mask = OMAP3430ES2_CLKTRCTRL_USBHOST_MASK,
 369 };
 370
 371 static struct clockdomain per_clkdm = {
 372         .name           = "per_clkdm",
 373         .pwrdm          = { .name = "per_pwrdm" },
 374         .flags          = CLKDM_CAN_HWSUP_SWSUP,
 375         .dep_bit        = OMAP3430_EN_PER_SHIFT,
 376         .wkdep_srcs     = per_wkdeps,
 377         .sleepdep_srcs  = per_sleepdeps,
 378         .clktrctrl_mask = OMAP3430_CLKTRCTRL_PER_MASK,
 379 };
 380
 381 static struct clockdomain per_am35x_clkdm = {
 382         .name           = "per_clkdm",
 383         .pwrdm          = { .name = "per_pwrdm" },
 384         .flags          = CLKDM_CAN_HWSUP_SWSUP,
 385         .dep_bit        = OMAP3430_EN_PER_SHIFT,
 386         .wkdep_srcs     = per_am35x_wkdeps,
 387         .sleepdep_srcs  = per_am35x_sleepdeps,
 388         .clktrctrl_mask = OMAP3430_CLKTRCTRL_PER_MASK,
 389 };
 390
 391 static struct clockdomain emu_clkdm = {
 392         .name           = "emu_clkdm",
 393         .pwrdm          = { .name = "emu_pwrdm" },
 394         .flags          = (CLKDM_CAN_ENABLE_AUTO | CLKDM_CAN_SWSUP |
 395                            CLKDM_MISSING_IDLE_REPORTING),
 396         .clktrctrl_mask = OMAP3430_CLKTRCTRL_EMU_MASK,
 397 };
 398
 399 static struct clockdomain dpll1_clkdm = {
 400         .name           = "dpll1_clkdm",
 401         .pwrdm          = { .name = "dpll1_pwrdm" },
 402 };
 403
 404 static struct clockdomain dpll2_clkdm = {
 405         .name           = "dpll2_clkdm",
 406         .pwrdm          = { .name = "dpll2_pwrdm" },
 407 };
 408
 409 static struct clockdomain dpll3_clkdm = {
 410         .name           = "dpll3_clkdm",
 411         .pwrdm          = { .name = "dpll3_pwrdm" },
 412 };
 413
 414 static struct clockdomain dpll4_clkdm = {
 415         .name           = "dpll4_clkdm",
 416         .pwrdm          = { .name = "dpll4_pwrdm" },
 417 };
 418
 419 static struct clockdomain dpll5_clkdm = {
 420         .name           = "dpll5_clkdm",
 421         .pwrdm          = { .name = "dpll5_pwrdm" },
 422 };
 423
 424 /*
 425  * Clockdomain hwsup dependencies
 426  */
 427
 428 static struct clkdm_autodep clkdm_autodeps[] = {
 429         {
 430                 .clkdm = { .name = "mpu_clkdm" },
 431         },
 432         {
 433                 .clkdm = { .name = "iva2_clkdm" },
 434         },
 435         {
 436                 .clkdm = { .name = NULL },
 437         }
 438 };
 439
 440 static struct clkdm_autodep clkdm_am35x_autodeps[] = {
 441         {
 442                 .clkdm = { .name = "mpu_clkdm" },
 443         },
 444         {
 445                 .clkdm = { .name = NULL },
 446         }
 447 };
 448
 449 /*
 450  *
 451  */
 452
 453 static struct clockdomain *clockdomains_common[] __initdata = {
 454         &wkup_common_clkdm,
 455         &neon_clkdm,
 456         &core_l3_3xxx_clkdm,
 457         &core_l4_3xxx_clkdm,
 458         &emu_clkdm,
 459         &dpll1_clkdm,
 460         &dpll3_clkdm,
 461         &dpll4_clkdm,
 462         NULL
 463 };
 464
 465 static struct clockdomain *clockdomains_omap3430[] __initdata = {
 466         &mpu_3xxx_clkdm,
 467         &iva2_clkdm,
 468         &d2d_clkdm,
 469         &dss_3xxx_clkdm,
 470         &cam_clkdm,
 471         &per_clkdm,
 472         &dpll2_clkdm,
 473         NULL
 474 };
 475
 476 static struct clockdomain *clockdomains_omap3430es1[] __initdata = {
 477         &gfx_3430es1_clkdm,
 478         NULL,
 479 };
 480
 481 static struct clockdomain *clockdomains_omap3430es2plus[] __initdata = {
 482         &sgx_clkdm,
 483         &dpll5_clkdm,
 484         &usbhost_clkdm,
 485         NULL,
 486 };
 487
 488 static struct clockdomain *clockdomains_am35x[] __initdata = {
 489         &mpu_am35x_clkdm,
 490         &sgx_am35x_clkdm,
 491         &dss_am35x_clkdm,
 492         &per_am35x_clkdm,
 493         &usbhost_am35x_clkdm,
 494         &dpll5_clkdm,
 495         NULL
 496 };
 497
 498 void __init omap3xxx_clockdomains_init(void)
 499 {
 500         struct clockdomain **sc;
 501         unsigned int rev;
 502
 503         if (!cpu_is_omap34xx())
 504                 return;
 505
 506         clkdm_register_platform_funcs(&omap3_clkdm_operations);
 507         clkdm_register_clkdms(clockdomains_common);
 508
 509         rev = omap_rev();
 510
 511         if (rev == AM35XX_REV_ES1_0 || rev == AM35XX_REV_ES1_1) {
 512                 clkdm_register_clkdms(clockdomains_am35x);
 513                 clkdm_register_autodeps(clkdm_am35x_autodeps);
 514         } else {
 515                 clkdm_register_clkdms(clockdomains_omap3430);
 516
 517                 sc = (rev == OMAP3430_REV_ES1_0) ?
 518                         clockdomains_omap3430es1 : clockdomains_omap3430es2plus;
 519
 520                 clkdm_register_clkdms(sc);
 521                 clkdm_register_autodeps(clkdm_autodeps);
 522         }
 523
 524         clkdm_complete_init();
 525 }