arch/arm/mach-omap1/clock_data.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  *  linux/arch/arm/mach-omap1/clock_data.c
   4  *
   5  *  Copyright (C) 2004 - 2005, 2009-2010 Nokia Corporation
   6  *  Written by Tuukka Tikkanen <tuukka.tikkanen@elektrobit.com>
   7  *  Based on clocks.h by Tony Lindgren, Gordon McNutt and RidgeRun, Inc
   8  *
   9  * To do:
  10  * - Clocks that are only available on some chips should be marked with the
  11  *   chips that they are present on.
  12  */
  13
  14 #include <linux/kernel.h>
  15 #include <linux/io.h>
  16 #include <linux/clk.h>
  17 #include <linux/clkdev.h>
  18 #include <linux/clk-provider.h>
  19 #include <linux/cpufreq.h>
  20 #include <linux/delay.h>
  21 #include <linux/soc/ti/omap1-io.h>
  22
  23 #include <asm/mach-types.h>  /* for machine_is_* */
  24
  25 #include "soc.h"
  26 #include "hardware.h"
  27 #include "usb.h"   /* for OTG_BASE */
  28 #include "iomap.h"
  29 #include "clock.h"
  30 #include "sram.h"
  31
  32 /* Some ARM_IDLECT1 bit shifts - used in struct arm_idlect1_clk */
  33 #define IDL_CLKOUT_ARM_SHIFT                    12
  34 #define IDLTIM_ARM_SHIFT                        9
  35 #define IDLAPI_ARM_SHIFT                        8
  36 #define IDLIF_ARM_SHIFT                         6
  37 #define IDLLB_ARM_SHIFT                         4       /* undocumented? */
  38 #define OMAP1510_IDLLCD_ARM_SHIFT               3       /* undocumented? */
  39 #define IDLPER_ARM_SHIFT                        2
  40 #define IDLXORP_ARM_SHIFT                       1
  41 #define IDLWDT_ARM_SHIFT                        0
  42
  43 /* Some MOD_CONF_CTRL_0 bit shifts - used in struct clk.enable_bit */
  44 #define CONF_MOD_UART3_CLK_MODE_R               31
  45 #define CONF_MOD_UART2_CLK_MODE_R               30
  46 #define CONF_MOD_UART1_CLK_MODE_R               29
  47 #define CONF_MOD_MMC_SD_CLK_REQ_R               23
  48 #define CONF_MOD_MCBSP3_AUXON                   20
  49
  50 /* Some MOD_CONF_CTRL_1 bit shifts - used in struct clk.enable_bit */
  51 #define CONF_MOD_SOSSI_CLK_EN_R                 16
  52
  53 /* Some OTG_SYSCON_2-specific bit fields */
  54 #define OTG_SYSCON_2_UHOST_EN_SHIFT             8
  55
  56 /* Some SOFT_REQ_REG bit fields - used in struct clk.enable_bit */
  57 #define SOFT_MMC2_DPLL_REQ_SHIFT        13
  58 #define SOFT_MMC_DPLL_REQ_SHIFT         12
  59 #define SOFT_UART3_DPLL_REQ_SHIFT       11
  60 #define SOFT_UART2_DPLL_REQ_SHIFT       10
  61 #define SOFT_UART1_DPLL_REQ_SHIFT       9
  62 #define SOFT_USB_OTG_DPLL_REQ_SHIFT     8
  63 #define SOFT_CAM_DPLL_REQ_SHIFT         7
  64 #define SOFT_COM_MCKO_REQ_SHIFT         6
  65 #define SOFT_PERIPH_REQ_SHIFT           5       /* sys_ck gate for UART2 ? */
  66 #define USB_REQ_EN_SHIFT                4
  67 #define SOFT_USB_REQ_SHIFT              3       /* sys_ck gate for USB host? */
  68 #define SOFT_SDW_REQ_SHIFT              2       /* sys_ck gate for Bluetooth? */
  69 #define SOFT_COM_REQ_SHIFT              1       /* sys_ck gate for com proc? */
  70 #define SOFT_DPLL_REQ_SHIFT             0
  71
  72 /*
  73  * Omap1 clocks
  74  */
  75
  76 static struct omap1_clk ck_ref = {
  77         .hw.init        = CLK_HW_INIT_NO_PARENT("ck_ref", &omap1_clk_rate_ops, 0),
  78         .rate           = 12000000,
  79 };
  80
  81 static struct omap1_clk ck_dpll1 = {
  82         .hw.init        = CLK_HW_INIT("ck_dpll1", "ck_ref", &omap1_clk_rate_ops,
  83                                       /*
  84                                        * force recursive refresh of rates of the clock
  85                                        * and its children when clk_get_rate() is called
  86                                        */
  87                                       CLK_GET_RATE_NOCACHE),
  88 };
  89
  90 /*
  91  * FIXME: This clock seems to be necessary but no-one has asked for its
  92  * activation.  [ FIX: SoSSI, SSR ]
  93  */
  94 static struct arm_idlect1_clk ck_dpll1out = {
  95         .clk = {
  96                 .hw.init        = CLK_HW_INIT("ck_dpll1out", "ck_dpll1", &omap1_clk_gate_ops, 0),
  97                 .ops            = &clkops_generic,
  98                 .flags          = CLOCK_IDLE_CONTROL | ENABLE_REG_32BIT,
  99                 .enable_reg     = OMAP1_IO_ADDRESS(ARM_IDLECT2),
 100                 .enable_bit     = EN_CKOUT_ARM,
 101         },
 102         .idlect_shift   = IDL_CLKOUT_ARM_SHIFT,
 103 };
 104
 105 static struct omap1_clk sossi_ck = {
 106         .hw.init        = CLK_HW_INIT("ck_sossi", "ck_dpll1out", &omap1_clk_full_ops, 0),
 107         .ops            = &clkops_generic,
 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         .round_rate     = &omap1_round_sossi_rate,
 113         .set_rate       = &omap1_set_sossi_rate,
 114 };
 115
 116 static struct omap1_clk arm_ck = {
 117         .hw.init        = CLK_HW_INIT("arm_ck", "ck_dpll1", &omap1_clk_rate_ops, 0),
 118         .rate_offset    = CKCTL_ARMDIV_OFFSET,
 119         .recalc         = &omap1_ckctl_recalc,
 120         .round_rate     = omap1_clk_round_rate_ckctl_arm,
 121         .set_rate       = omap1_clk_set_rate_ckctl_arm,
 122 };
 123
 124 static struct arm_idlect1_clk armper_ck = {
 125         .clk = {
 126                 .hw.init        = CLK_HW_INIT("armper_ck", "ck_dpll1", &omap1_clk_full_ops,
 127                                               CLK_IS_CRITICAL),
 128                 .ops            = &clkops_generic,
 129                 .flags          = CLOCK_IDLE_CONTROL,
 130                 .enable_reg     = OMAP1_IO_ADDRESS(ARM_IDLECT2),
 131                 .enable_bit     = EN_PERCK,
 132                 .rate_offset    = CKCTL_PERDIV_OFFSET,
 133                 .recalc         = &omap1_ckctl_recalc,
 134                 .round_rate     = omap1_clk_round_rate_ckctl_arm,
 135                 .set_rate       = omap1_clk_set_rate_ckctl_arm,
 136         },
 137         .idlect_shift   = IDLPER_ARM_SHIFT,
 138 };
 139
 140 /*
 141  * FIXME: This clock seems to be necessary but no-one has asked for its
 142  * activation.  [ GPIO code for 1510 ]
 143  */
 144 static struct omap1_clk arm_gpio_ck = {
 145         .hw.init        = CLK_HW_INIT("ick", "ck_dpll1", &omap1_clk_gate_ops, CLK_IS_CRITICAL),
 146         .ops            = &clkops_generic,
 147         .enable_reg     = OMAP1_IO_ADDRESS(ARM_IDLECT2),
 148         .enable_bit     = EN_GPIOCK,
 149 };
 150
 151 static struct arm_idlect1_clk armxor_ck = {
 152         .clk = {
 153                 .hw.init        = CLK_HW_INIT("armxor_ck", "ck_ref", &omap1_clk_gate_ops,
 154                                               CLK_IS_CRITICAL),
 155                 .ops            = &clkops_generic,
 156                 .flags          = CLOCK_IDLE_CONTROL,
 157                 .enable_reg     = OMAP1_IO_ADDRESS(ARM_IDLECT2),
 158                 .enable_bit     = EN_XORPCK,
 159         },
 160         .idlect_shift   = IDLXORP_ARM_SHIFT,
 161 };
 162
 163 static struct arm_idlect1_clk armtim_ck = {
 164         .clk = {
 165                 .hw.init        = CLK_HW_INIT("armtim_ck", "ck_ref", &omap1_clk_gate_ops,
 166                                               CLK_IS_CRITICAL),
 167                 .ops            = &clkops_generic,
 168                 .flags          = CLOCK_IDLE_CONTROL,
 169                 .enable_reg     = OMAP1_IO_ADDRESS(ARM_IDLECT2),
 170                 .enable_bit     = EN_TIMCK,
 171         },
 172         .idlect_shift   = IDLTIM_ARM_SHIFT,
 173 };
 174
 175 static struct arm_idlect1_clk armwdt_ck = {
 176         .clk = {
 177                 .hw.init        = CLK_HW_INIT("armwdt_ck", "ck_ref", &omap1_clk_full_ops, 0),
 178                 .ops            = &clkops_generic,
 179                 .flags          = CLOCK_IDLE_CONTROL,
 180                 .enable_reg     = OMAP1_IO_ADDRESS(ARM_IDLECT2),
 181                 .enable_bit     = EN_WDTCK,
 182                 .fixed_div      = 14,
 183                 .recalc         = &omap_fixed_divisor_recalc,
 184         },
 185         .idlect_shift   = IDLWDT_ARM_SHIFT,
 186 };
 187
 188 static struct omap1_clk arminth_ck16xx = {
 189         .hw.init        = CLK_HW_INIT("arminth_ck", "arm_ck", &omap1_clk_null_ops, 0),
 190         /* Note: On 16xx the frequency can be divided by 2 by programming
 191          * ARM_CKCTL:ARM_INTHCK_SEL(14) to 1
 192          *
 193          * 1510 version is in TC clocks.
 194          */
 195 };
 196
 197 static struct omap1_clk dsp_ck = {
 198         .hw.init        = CLK_HW_INIT("dsp_ck", "ck_dpll1", &omap1_clk_full_ops, 0),
 199         .ops            = &clkops_generic,
 200         .enable_reg     = OMAP1_IO_ADDRESS(ARM_CKCTL),
 201         .enable_bit     = EN_DSPCK,
 202         .rate_offset    = CKCTL_DSPDIV_OFFSET,
 203         .recalc         = &omap1_ckctl_recalc,
 204         .round_rate     = omap1_clk_round_rate_ckctl_arm,
 205         .set_rate       = omap1_clk_set_rate_ckctl_arm,
 206 };
 207
 208 static struct omap1_clk dspmmu_ck = {
 209         .hw.init        = CLK_HW_INIT("dspmmu_ck", "ck_dpll1", &omap1_clk_rate_ops, 0),
 210         .rate_offset    = CKCTL_DSPMMUDIV_OFFSET,
 211         .recalc         = &omap1_ckctl_recalc,
 212         .round_rate     = omap1_clk_round_rate_ckctl_arm,
 213         .set_rate       = omap1_clk_set_rate_ckctl_arm,
 214 };
 215
 216 static struct omap1_clk dspper_ck = {
 217         .hw.init        = CLK_HW_INIT("dspper_ck", "ck_dpll1", &omap1_clk_full_ops, 0),
 218         .ops            = &clkops_dspck,
 219         .enable_reg     = DSP_IDLECT2,
 220         .enable_bit     = EN_PERCK,
 221         .rate_offset    = CKCTL_PERDIV_OFFSET,
 222         .recalc         = &omap1_ckctl_recalc_dsp_domain,
 223         .round_rate     = omap1_clk_round_rate_ckctl_arm,
 224         .set_rate       = &omap1_clk_set_rate_dsp_domain,
 225 };
 226
 227 static struct omap1_clk dspxor_ck = {
 228         .hw.init        = CLK_HW_INIT("dspxor_ck", "ck_ref", &omap1_clk_gate_ops, 0),
 229         .ops            = &clkops_dspck,
 230         .enable_reg     = DSP_IDLECT2,
 231         .enable_bit     = EN_XORPCK,
 232 };
 233
 234 static struct omap1_clk dsptim_ck = {
 235         .hw.init        = CLK_HW_INIT("dsptim_ck", "ck_ref", &omap1_clk_gate_ops, 0),
 236         .ops            = &clkops_dspck,
 237         .enable_reg     = DSP_IDLECT2,
 238         .enable_bit     = EN_DSPTIMCK,
 239 };
 240
 241 static struct arm_idlect1_clk tc_ck = {
 242         .clk = {
 243                 .hw.init        = CLK_HW_INIT("tc_ck", "ck_dpll1", &omap1_clk_rate_ops, 0),
 244                 .flags          = CLOCK_IDLE_CONTROL,
 245                 .rate_offset    = CKCTL_TCDIV_OFFSET,
 246                 .recalc         = &omap1_ckctl_recalc,
 247                 .round_rate     = omap1_clk_round_rate_ckctl_arm,
 248                 .set_rate       = omap1_clk_set_rate_ckctl_arm,
 249         },
 250         .idlect_shift   = IDLIF_ARM_SHIFT,
 251 };
 252
 253 static struct omap1_clk arminth_ck1510 = {
 254         .hw.init        = CLK_HW_INIT("arminth_ck", "tc_ck", &omap1_clk_null_ops, 0),
 255         /* Note: On 1510 the frequency follows TC_CK
 256          *
 257          * 16xx version is in MPU clocks.
 258          */
 259 };
 260
 261 static struct omap1_clk tipb_ck = {
 262         /* No-idle controlled by "tc_ck" */
 263         .hw.init        = CLK_HW_INIT("tipb_ck", "tc_ck", &omap1_clk_null_ops, 0),
 264 };
 265
 266 static struct omap1_clk l3_ocpi_ck = {
 267         /* No-idle controlled by "tc_ck" */
 268         .hw.init        = CLK_HW_INIT("l3_ocpi_ck", "tc_ck", &omap1_clk_gate_ops, 0),
 269         .ops            = &clkops_generic,
 270         .enable_reg     = OMAP1_IO_ADDRESS(ARM_IDLECT3),
 271         .enable_bit     = EN_OCPI_CK,
 272 };
 273
 274 static struct omap1_clk tc1_ck = {
 275         .hw.init        = CLK_HW_INIT("tc1_ck", "tc_ck", &omap1_clk_gate_ops, 0),
 276         .ops            = &clkops_generic,
 277         .enable_reg     = OMAP1_IO_ADDRESS(ARM_IDLECT3),
 278         .enable_bit     = EN_TC1_CK,
 279 };
 280
 281 /*
 282  * FIXME: This clock seems to be necessary but no-one has asked for its
 283  * activation.  [ pm.c (SRAM), CCP, Camera ]
 284  */
 285
 286 static struct omap1_clk tc2_ck = {
 287         .hw.init        = CLK_HW_INIT("tc2_ck", "tc_ck", &omap1_clk_gate_ops, CLK_IS_CRITICAL),
 288         .ops            = &clkops_generic,
 289         .enable_reg     = OMAP1_IO_ADDRESS(ARM_IDLECT3),
 290         .enable_bit     = EN_TC2_CK,
 291 };
 292
 293 static struct omap1_clk dma_ck = {
 294         /* No-idle controlled by "tc_ck" */
 295         .hw.init        = CLK_HW_INIT("dma_ck", "tc_ck", &omap1_clk_null_ops, 0),
 296 };
 297
 298 static struct omap1_clk dma_lcdfree_ck = {
 299         .hw.init        = CLK_HW_INIT("dma_lcdfree_ck", "tc_ck", &omap1_clk_null_ops, 0),
 300 };
 301
 302 static struct arm_idlect1_clk api_ck = {
 303         .clk = {
 304                 .hw.init        = CLK_HW_INIT("api_ck", "tc_ck", &omap1_clk_gate_ops, 0),
 305                 .ops            = &clkops_generic,
 306                 .flags          = CLOCK_IDLE_CONTROL,
 307                 .enable_reg     = OMAP1_IO_ADDRESS(ARM_IDLECT2),
 308                 .enable_bit     = EN_APICK,
 309         },
 310         .idlect_shift   = IDLAPI_ARM_SHIFT,
 311 };
 312
 313 static struct arm_idlect1_clk lb_ck = {
 314         .clk = {
 315                 .hw.init        = CLK_HW_INIT("lb_ck", "tc_ck", &omap1_clk_gate_ops, 0),
 316                 .ops            = &clkops_generic,
 317                 .flags          = CLOCK_IDLE_CONTROL,
 318                 .enable_reg     = OMAP1_IO_ADDRESS(ARM_IDLECT2),
 319                 .enable_bit     = EN_LBCK,
 320         },
 321         .idlect_shift   = IDLLB_ARM_SHIFT,
 322 };
 323
 324 static struct omap1_clk rhea1_ck = {
 325         .hw.init        = CLK_HW_INIT("rhea1_ck", "tc_ck", &omap1_clk_null_ops, 0),
 326 };
 327
 328 static struct omap1_clk rhea2_ck = {
 329         .hw.init        = CLK_HW_INIT("rhea2_ck", "tc_ck", &omap1_clk_null_ops, 0),
 330 };
 331
 332 static struct omap1_clk lcd_ck_16xx = {
 333         .hw.init        = CLK_HW_INIT("lcd_ck", "ck_dpll1", &omap1_clk_full_ops, 0),
 334         .ops            = &clkops_generic,
 335         .enable_reg     = OMAP1_IO_ADDRESS(ARM_IDLECT2),
 336         .enable_bit     = EN_LCDCK,
 337         .rate_offset    = CKCTL_LCDDIV_OFFSET,
 338         .recalc         = &omap1_ckctl_recalc,
 339         .round_rate     = omap1_clk_round_rate_ckctl_arm,
 340         .set_rate       = omap1_clk_set_rate_ckctl_arm,
 341 };
 342
 343 static struct arm_idlect1_clk lcd_ck_1510 = {
 344         .clk = {
 345                 .hw.init        = CLK_HW_INIT("lcd_ck", "ck_dpll1", &omap1_clk_full_ops, 0),
 346                 .ops            = &clkops_generic,
 347                 .flags          = CLOCK_IDLE_CONTROL,
 348                 .enable_reg     = OMAP1_IO_ADDRESS(ARM_IDLECT2),
 349                 .enable_bit     = EN_LCDCK,
 350                 .rate_offset    = CKCTL_LCDDIV_OFFSET,
 351                 .recalc         = &omap1_ckctl_recalc,
 352                 .round_rate     = omap1_clk_round_rate_ckctl_arm,
 353                 .set_rate       = omap1_clk_set_rate_ckctl_arm,
 354         },
 355         .idlect_shift   = OMAP1510_IDLLCD_ARM_SHIFT,
 356 };
 357
 358
 359 /*
 360  * XXX The enable_bit here is misused - it simply switches between 12MHz
 361  * and 48MHz.  Reimplement with clk_mux.
 362  *
 363  * XXX does this need SYSC register handling?
 364  */
 365 static struct omap1_clk uart1_1510 = {
 366         /* Direct from ULPD, no real parent */
 367         .hw.init        = CLK_HW_INIT("uart1_ck", "armper_ck", &omap1_clk_full_ops, 0),
 368         .flags          = ENABLE_REG_32BIT | CLOCK_NO_IDLE_PARENT,
 369         .enable_reg     = OMAP1_IO_ADDRESS(MOD_CONF_CTRL_0),
 370         .enable_bit     = CONF_MOD_UART1_CLK_MODE_R,
 371         .round_rate     = &omap1_round_uart_rate,
 372         .set_rate       = &omap1_set_uart_rate,
 373         .recalc         = &omap1_uart_recalc,
 374 };
 375
 376 /*
 377  * XXX The enable_bit here is misused - it simply switches between 12MHz
 378  * and 48MHz.  Reimplement with clk_mux.
 379  *
 380  * XXX SYSC register handling does not belong in the clock framework
 381  */
 382 static struct uart_clk uart1_16xx = {
 383         .clk    = {
 384                 .ops            = &clkops_uart_16xx,
 385                 /* Direct from ULPD, no real parent */
 386                 .hw.init        = CLK_HW_INIT("uart1_ck", "armper_ck", &omap1_clk_full_ops, 0),
 387                 .rate           = 48000000,
 388                 .flags          = ENABLE_REG_32BIT | CLOCK_NO_IDLE_PARENT,
 389                 .enable_reg     = OMAP1_IO_ADDRESS(MOD_CONF_CTRL_0),
 390                 .enable_bit     = CONF_MOD_UART1_CLK_MODE_R,
 391         },
 392         .sysc_addr      = 0xfffb0054,
 393 };
 394
 395 /*
 396  * XXX The enable_bit here is misused - it simply switches between 12MHz
 397  * and 48MHz.  Reimplement with clk_mux.
 398  *
 399  * XXX does this need SYSC register handling?
 400  */
 401 static struct omap1_clk uart2_ck = {
 402         /* Direct from ULPD, no real parent */
 403         .hw.init        = CLK_HW_INIT("uart2_ck", "armper_ck", &omap1_clk_full_ops, 0),
 404         .flags          = ENABLE_REG_32BIT | CLOCK_NO_IDLE_PARENT,
 405         .enable_reg     = OMAP1_IO_ADDRESS(MOD_CONF_CTRL_0),
 406         .enable_bit     = CONF_MOD_UART2_CLK_MODE_R,
 407         .round_rate     = &omap1_round_uart_rate,
 408         .set_rate       = &omap1_set_uart_rate,
 409         .recalc         = &omap1_uart_recalc,
 410 };
 411
 412 /*
 413  * XXX The enable_bit here is misused - it simply switches between 12MHz
 414  * and 48MHz.  Reimplement with clk_mux.
 415  *
 416  * XXX does this need SYSC register handling?
 417  */
 418 static struct omap1_clk uart3_1510 = {
 419         /* Direct from ULPD, no real parent */
 420         .hw.init        = CLK_HW_INIT("uart3_ck", "armper_ck", &omap1_clk_full_ops, 0),
 421         .flags          = ENABLE_REG_32BIT | CLOCK_NO_IDLE_PARENT,
 422         .enable_reg     = OMAP1_IO_ADDRESS(MOD_CONF_CTRL_0),
 423         .enable_bit     = CONF_MOD_UART3_CLK_MODE_R,
 424         .round_rate     = &omap1_round_uart_rate,
 425         .set_rate       = &omap1_set_uart_rate,
 426         .recalc         = &omap1_uart_recalc,
 427 };
 428
 429 /*
 430  * XXX The enable_bit here is misused - it simply switches between 12MHz
 431  * and 48MHz.  Reimplement with clk_mux.
 432  *
 433  * XXX SYSC register handling does not belong in the clock framework
 434  */
 435 static struct uart_clk uart3_16xx = {
 436         .clk    = {
 437                 .ops            = &clkops_uart_16xx,
 438                 /* Direct from ULPD, no real parent */
 439                 .hw.init        = CLK_HW_INIT("uart3_ck", "armper_ck", &omap1_clk_full_ops, 0),
 440                 .rate           = 48000000,
 441                 .flags          = ENABLE_REG_32BIT | CLOCK_NO_IDLE_PARENT,
 442                 .enable_reg     = OMAP1_IO_ADDRESS(MOD_CONF_CTRL_0),
 443                 .enable_bit     = CONF_MOD_UART3_CLK_MODE_R,
 444         },
 445         .sysc_addr      = 0xfffb9854,
 446 };
 447
 448 static struct omap1_clk usb_clko = {    /* 6 MHz output on W4_USB_CLKO */
 449         .ops            = &clkops_generic,
 450         /* Direct from ULPD, no parent */
 451         .hw.init        = CLK_HW_INIT_NO_PARENT("usb_clko", &omap1_clk_full_ops, 0),
 452         .rate           = 6000000,
 453         .flags          = ENABLE_REG_32BIT,
 454         .enable_reg     = OMAP1_IO_ADDRESS(ULPD_CLOCK_CTRL),
 455         .enable_bit     = USB_MCLK_EN_BIT,
 456 };
 457
 458 static struct omap1_clk usb_hhc_ck1510 = {
 459         .ops            = &clkops_generic,
 460         /* Direct from ULPD, no parent */
 461         .hw.init        = CLK_HW_INIT_NO_PARENT("usb_hhc_ck", &omap1_clk_full_ops, 0),
 462         .rate           = 48000000, /* Actually 2 clocks, 12MHz and 48MHz */
 463         .flags          = ENABLE_REG_32BIT,
 464         .enable_reg     = OMAP1_IO_ADDRESS(MOD_CONF_CTRL_0),
 465         .enable_bit     = USB_HOST_HHC_UHOST_EN,
 466 };
 467
 468 static struct omap1_clk usb_hhc_ck16xx = {
 469         .ops            = &clkops_generic,
 470         /* Direct from ULPD, no parent */
 471         .hw.init        = CLK_HW_INIT_NO_PARENT("usb_hhc_ck", &omap1_clk_full_ops, 0),
 472         .rate           = 48000000,
 473         /* OTG_SYSCON_2.OTG_PADEN == 0 (not 1510-compatible) */
 474         .flags          = ENABLE_REG_32BIT,
 475         .enable_reg     = OMAP1_IO_ADDRESS(OTG_BASE + 0x08), /* OTG_SYSCON_2 */
 476         .enable_bit     = OTG_SYSCON_2_UHOST_EN_SHIFT
 477 };
 478
 479 static struct omap1_clk usb_dc_ck = {
 480         .ops            = &clkops_generic,
 481         /* Direct from ULPD, no parent */
 482         .hw.init        = CLK_HW_INIT_NO_PARENT("usb_dc_ck", &omap1_clk_full_ops, 0),
 483         .rate           = 48000000,
 484         .enable_reg     = OMAP1_IO_ADDRESS(SOFT_REQ_REG),
 485         .enable_bit     = SOFT_USB_OTG_DPLL_REQ_SHIFT,
 486 };
 487
 488 static struct omap1_clk uart1_7xx = {
 489         .ops            = &clkops_generic,
 490         /* Direct from ULPD, no parent */
 491         .hw.init        = CLK_HW_INIT_NO_PARENT("uart1_ck", &omap1_clk_full_ops, 0),
 492         .rate           = 12000000,
 493         .enable_reg     = OMAP1_IO_ADDRESS(SOFT_REQ_REG),
 494         .enable_bit     = 9,
 495 };
 496
 497 static struct omap1_clk uart2_7xx = {
 498         .ops            = &clkops_generic,
 499         /* Direct from ULPD, no parent */
 500         .hw.init        = CLK_HW_INIT_NO_PARENT("uart2_ck", &omap1_clk_full_ops, 0),
 501         .rate           = 12000000,
 502         .enable_reg     = OMAP1_IO_ADDRESS(SOFT_REQ_REG),
 503         .enable_bit     = 11,
 504 };
 505
 506 static struct omap1_clk mclk_1510 = {
 507         .ops            = &clkops_generic,
 508         /* Direct from ULPD, no parent. May be enabled by ext hardware. */
 509         .hw.init        = CLK_HW_INIT_NO_PARENT("mclk", &omap1_clk_full_ops, 0),
 510         .rate           = 12000000,
 511         .enable_reg     = OMAP1_IO_ADDRESS(SOFT_REQ_REG),
 512         .enable_bit     = SOFT_COM_MCKO_REQ_SHIFT,
 513 };
 514
 515 static struct omap1_clk mclk_16xx = {
 516         .ops            = &clkops_generic,
 517         /* Direct from ULPD, no parent. May be enabled by ext hardware. */
 518         .hw.init        = CLK_HW_INIT_NO_PARENT("mclk", &omap1_clk_full_ops, 0),
 519         .enable_reg     = OMAP1_IO_ADDRESS(COM_CLK_DIV_CTRL_SEL),
 520         .enable_bit     = COM_ULPD_PLL_CLK_REQ,
 521         .set_rate       = &omap1_set_ext_clk_rate,
 522         .round_rate     = &omap1_round_ext_clk_rate,
 523         .init           = &omap1_init_ext_clk,
 524 };
 525
 526 static struct omap1_clk bclk_1510 = {
 527         /* Direct from ULPD, no parent. May be enabled by ext hardware. */
 528         .hw.init        = CLK_HW_INIT_NO_PARENT("bclk", &omap1_clk_rate_ops, 0),
 529         .rate           = 12000000,
 530 };
 531
 532 static struct omap1_clk bclk_16xx = {
 533         .ops            = &clkops_generic,
 534         /* Direct from ULPD, no parent. May be enabled by ext hardware. */
 535         .hw.init        = CLK_HW_INIT_NO_PARENT("bclk", &omap1_clk_full_ops, 0),
 536         .enable_reg     = OMAP1_IO_ADDRESS(SWD_CLK_DIV_CTRL_SEL),
 537         .enable_bit     = SWD_ULPD_PLL_CLK_REQ,
 538         .set_rate       = &omap1_set_ext_clk_rate,
 539         .round_rate     = &omap1_round_ext_clk_rate,
 540         .init           = &omap1_init_ext_clk,
 541 };
 542
 543 static struct omap1_clk mmc1_ck = {
 544         .ops            = &clkops_generic,
 545         /* Functional clock is direct from ULPD, interface clock is ARMPER */
 546         .hw.init        = CLK_HW_INIT("mmc1_ck", "armper_ck", &omap1_clk_full_ops, 0),
 547         .rate           = 48000000,
 548         .flags          = ENABLE_REG_32BIT | CLOCK_NO_IDLE_PARENT,
 549         .enable_reg     = OMAP1_IO_ADDRESS(MOD_CONF_CTRL_0),
 550         .enable_bit     = CONF_MOD_MMC_SD_CLK_REQ_R,
 551 };
 552
 553 /*
 554  * XXX MOD_CONF_CTRL_0 bit 20 is defined in the 1510 TRM as
 555  * CONF_MOD_MCBSP3_AUXON ??
 556  */
 557 static struct omap1_clk mmc2_ck = {
 558         .ops            = &clkops_generic,
 559         /* Functional clock is direct from ULPD, interface clock is ARMPER */
 560         .hw.init        = CLK_HW_INIT("mmc2_ck", "armper_ck", &omap1_clk_full_ops, 0),
 561         .rate           = 48000000,
 562         .flags          = ENABLE_REG_32BIT | CLOCK_NO_IDLE_PARENT,
 563         .enable_reg     = OMAP1_IO_ADDRESS(MOD_CONF_CTRL_0),
 564         .enable_bit     = 20,
 565 };
 566
 567 static struct omap1_clk mmc3_ck = {
 568         .ops            = &clkops_generic,
 569         /* Functional clock is direct from ULPD, interface clock is ARMPER */
 570         .hw.init        = CLK_HW_INIT("mmc3_ck", "armper_ck", &omap1_clk_full_ops, 0),
 571         .rate           = 48000000,
 572         .flags          = ENABLE_REG_32BIT | CLOCK_NO_IDLE_PARENT,
 573         .enable_reg     = OMAP1_IO_ADDRESS(SOFT_REQ_REG),
 574         .enable_bit     = SOFT_MMC_DPLL_REQ_SHIFT,
 575 };
 576
 577 static struct omap1_clk virtual_ck_mpu = {
 578         /* Is smarter alias for arm_ck */
 579         .hw.init        = CLK_HW_INIT("mpu", "arm_ck", &omap1_clk_rate_ops, 0),
 580         .recalc         = &followparent_recalc,
 581         .set_rate       = &omap1_select_table_rate,
 582         .round_rate     = &omap1_round_to_table_rate,
 583 };
 584
 585 /* virtual functional clock domain for I2C. Just for making sure that ARMXOR_CK
 586 remains active during MPU idle whenever this is enabled */
 587 static struct omap1_clk i2c_fck = {
 588         .hw.init        = CLK_HW_INIT("i2c_fck", "armxor_ck", &omap1_clk_gate_ops, 0),
 589         .flags          = CLOCK_NO_IDLE_PARENT,
 590 };
 591
 592 static struct omap1_clk i2c_ick = {
 593         .hw.init        = CLK_HW_INIT("i2c_ick", "armper_ck", &omap1_clk_gate_ops, 0),
 594         .flags          = CLOCK_NO_IDLE_PARENT,
 595 };
 596
 597 /*
 598  * clkdev integration
 599  */
 600
 601 static struct omap_clk omap_clks[] = {
 602         /* non-ULPD clocks */
 603         CLK(NULL,       "ck_ref",       &ck_ref.hw,     CK_16XX | CK_1510 | CK_310 | CK_7XX),
 604         CLK(NULL,       "ck_dpll1",     &ck_dpll1.hw,   CK_16XX | CK_1510 | CK_310 | CK_7XX),
 605         /* CK_GEN1 clocks */
 606         CLK(NULL,       "ck_dpll1out",  &ck_dpll1out.clk.hw, CK_16XX),
 607         CLK(NULL,       "ck_sossi",     &sossi_ck.hw,   CK_16XX),
 608         CLK(NULL,       "arm_ck",       &arm_ck.hw,     CK_16XX | CK_1510 | CK_310),
 609         CLK(NULL,       "armper_ck",    &armper_ck.clk.hw, CK_16XX | CK_1510 | CK_310),
 610         CLK("omap_gpio.0", "ick",       &arm_gpio_ck.hw, CK_1510 | CK_310),
 611         CLK(NULL,       "armxor_ck",    &armxor_ck.clk.hw, CK_16XX | CK_1510 | CK_310 | CK_7XX),
 612         CLK(NULL,       "armtim_ck",    &armtim_ck.clk.hw, CK_16XX | CK_1510 | CK_310),
 613         CLK("omap_wdt", "fck",          &armwdt_ck.clk.hw, CK_16XX | CK_1510 | CK_310),
 614         CLK("omap_wdt", "ick",          &armper_ck.clk.hw, CK_16XX),
 615         CLK("omap_wdt", "ick",          &dummy_ck.hw,   CK_1510 | CK_310),
 616         CLK(NULL,       "arminth_ck",   &arminth_ck1510.hw, CK_1510 | CK_310),
 617         CLK(NULL,       "arminth_ck",   &arminth_ck16xx.hw, CK_16XX),
 618         /* CK_GEN2 clocks */
 619         CLK(NULL,       "dsp_ck",       &dsp_ck.hw,     CK_16XX | CK_1510 | CK_310),
 620         CLK(NULL,       "dspmmu_ck",    &dspmmu_ck.hw,  CK_16XX | CK_1510 | CK_310),
 621         CLK(NULL,       "dspper_ck",    &dspper_ck.hw,  CK_16XX | CK_1510 | CK_310),
 622         CLK(NULL,       "dspxor_ck",    &dspxor_ck.hw,  CK_16XX | CK_1510 | CK_310),
 623         CLK(NULL,       "dsptim_ck",    &dsptim_ck.hw,  CK_16XX | CK_1510 | CK_310),
 624         /* CK_GEN3 clocks */
 625         CLK(NULL,       "tc_ck",        &tc_ck.clk.hw,  CK_16XX | CK_1510 | CK_310 | CK_7XX),
 626         CLK(NULL,       "tipb_ck",      &tipb_ck.hw,    CK_1510 | CK_310),
 627         CLK(NULL,       "l3_ocpi_ck",   &l3_ocpi_ck.hw, CK_16XX | CK_7XX),
 628         CLK(NULL,       "tc1_ck",       &tc1_ck.hw,     CK_16XX),
 629         CLK(NULL,       "tc2_ck",       &tc2_ck.hw,     CK_16XX),
 630         CLK(NULL,       "dma_ck",       &dma_ck.hw,     CK_16XX | CK_1510 | CK_310),
 631         CLK(NULL,       "dma_lcdfree_ck", &dma_lcdfree_ck.hw, CK_16XX),
 632         CLK(NULL,       "api_ck",       &api_ck.clk.hw, CK_16XX | CK_1510 | CK_310 | CK_7XX),
 633         CLK(NULL,       "lb_ck",        &lb_ck.clk.hw,  CK_1510 | CK_310),
 634         CLK(NULL,       "rhea1_ck",     &rhea1_ck.hw,   CK_16XX),
 635         CLK(NULL,       "rhea2_ck",     &rhea2_ck.hw,   CK_16XX),
 636         CLK(NULL,       "lcd_ck",       &lcd_ck_16xx.hw, CK_16XX | CK_7XX),
 637         CLK(NULL,       "lcd_ck",       &lcd_ck_1510.clk.hw, CK_1510 | CK_310),
 638         /* ULPD clocks */
 639         CLK(NULL,       "uart1_ck",     &uart1_1510.hw, CK_1510 | CK_310),
 640         CLK(NULL,       "uart1_ck",     &uart1_16xx.clk.hw, CK_16XX),
 641         CLK(NULL,       "uart1_ck",     &uart1_7xx.hw,  CK_7XX),
 642         CLK(NULL,       "uart2_ck",     &uart2_ck.hw,   CK_16XX | CK_1510 | CK_310),
 643         CLK(NULL,       "uart2_ck",     &uart2_7xx.hw,  CK_7XX),
 644         CLK(NULL,       "uart3_ck",     &uart3_1510.hw, CK_1510 | CK_310),
 645         CLK(NULL,       "uart3_ck",     &uart3_16xx.clk.hw, CK_16XX),
 646         CLK(NULL,       "usb_clko",     &usb_clko.hw,   CK_16XX | CK_1510 | CK_310),
 647         CLK(NULL,       "usb_hhc_ck",   &usb_hhc_ck1510.hw, CK_1510 | CK_310),
 648         CLK(NULL,       "usb_hhc_ck",   &usb_hhc_ck16xx.hw, CK_16XX),
 649         CLK(NULL,       "usb_dc_ck",    &usb_dc_ck.hw,  CK_16XX | CK_7XX),
 650         CLK(NULL,       "mclk",         &mclk_1510.hw,  CK_1510 | CK_310),
 651         CLK(NULL,       "mclk",         &mclk_16xx.hw,  CK_16XX),
 652         CLK(NULL,       "bclk",         &bclk_1510.hw,  CK_1510 | CK_310),
 653         CLK(NULL,       "bclk",         &bclk_16xx.hw,  CK_16XX),
 654         CLK("mmci-omap.0", "fck",       &mmc1_ck.hw,    CK_16XX | CK_1510 | CK_310),
 655         CLK("mmci-omap.0", "fck",       &mmc3_ck.hw,    CK_7XX),
 656         CLK("mmci-omap.0", "ick",       &armper_ck.clk.hw, CK_16XX | CK_1510 | CK_310 | CK_7XX),
 657         CLK("mmci-omap.1", "fck",       &mmc2_ck.hw,    CK_16XX),
 658         CLK("mmci-omap.1", "ick",       &armper_ck.clk.hw, CK_16XX),
 659         /* Virtual clocks */
 660         CLK(NULL,       "mpu",          &virtual_ck_mpu.hw, CK_16XX | CK_1510 | CK_310),
 661         CLK("omap_i2c.1", "fck",        &i2c_fck.hw,    CK_16XX | CK_1510 | CK_310 | CK_7XX),
 662         CLK("omap_i2c.1", "ick",        &i2c_ick.hw,    CK_16XX),
 663         CLK("omap_i2c.1", "ick",        &dummy_ck.hw,   CK_1510 | CK_310 | CK_7XX),
 664         CLK("omap1_spi100k.1", "fck",   &dummy_ck.hw,   CK_7XX),
 665         CLK("omap1_spi100k.1", "ick",   &dummy_ck.hw,   CK_7XX),
 666         CLK("omap1_spi100k.2", "fck",   &dummy_ck.hw,   CK_7XX),
 667         CLK("omap1_spi100k.2", "ick",   &dummy_ck.hw,   CK_7XX),
 668         CLK("omap_uwire", "fck",        &armxor_ck.clk.hw, CK_16XX | CK_1510 | CK_310),
 669         CLK("omap-mcbsp.1", "ick",      &dspper_ck.hw,  CK_16XX),
 670         CLK("omap-mcbsp.1", "ick",      &dummy_ck.hw,   CK_1510 | CK_310),
 671         CLK("omap-mcbsp.2", "ick",      &armper_ck.clk.hw, CK_16XX),
 672         CLK("omap-mcbsp.2", "ick",      &dummy_ck.hw,   CK_1510 | CK_310),
 673         CLK("omap-mcbsp.3", "ick",      &dspper_ck.hw,  CK_16XX),
 674         CLK("omap-mcbsp.3", "ick",      &dummy_ck.hw,   CK_1510 | CK_310),
 675         CLK("omap-mcbsp.1", "fck",      &dspxor_ck.hw,  CK_16XX | CK_1510 | CK_310),
 676         CLK("omap-mcbsp.2", "fck",      &armper_ck.clk.hw, CK_16XX | CK_1510 | CK_310),
 677         CLK("omap-mcbsp.3", "fck",      &dspxor_ck.hw,  CK_16XX | CK_1510 | CK_310),
 678 };
 679
 680 /*
 681  * init
 682  */
 683
 684 static void __init omap1_show_rates(void)
 685 {
 686         pr_notice("Clocking rate (xtal/DPLL1/MPU): %ld.%01ld/%ld.%01ld/%ld.%01ld MHz\n",
 687                   ck_ref.rate / 1000000, (ck_ref.rate / 100000) % 10,
 688                   ck_dpll1.rate / 1000000, (ck_dpll1.rate / 100000) % 10,
 689                   arm_ck.rate / 1000000, (arm_ck.rate / 100000) % 10);
 690 }
 691
 692 u32 cpu_mask;
 693
 694 int __init omap1_clk_init(void)
 695 {
 696         struct omap_clk *c;
 697         u32 reg;
 698
 699 #ifdef CONFIG_DEBUG_LL
 700         /* Make sure UART clocks are enabled early */
 701         if (cpu_is_omap16xx())
 702                 omap_writel(omap_readl(MOD_CONF_CTRL_0) |
 703                             CONF_MOD_UART1_CLK_MODE_R |
 704                             CONF_MOD_UART3_CLK_MODE_R, MOD_CONF_CTRL_0);
 705 #endif
 706
 707         /* USB_REQ_EN will be disabled later if necessary (usb_dc_ck) */
 708         reg = omap_readw(SOFT_REQ_REG) & (1 << 4);
 709         omap_writew(reg, SOFT_REQ_REG);
 710         if (!cpu_is_omap15xx())
 711                 omap_writew(0, SOFT_REQ_REG2);
 712
 713         /* By default all idlect1 clocks are allowed to idle */
 714         arm_idlect1_mask = ~0;
 715
 716         cpu_mask = 0;
 717         if (cpu_is_omap1710())
 718                 cpu_mask |= CK_1710;
 719         if (cpu_is_omap16xx())
 720                 cpu_mask |= CK_16XX;
 721         if (cpu_is_omap1510())
 722                 cpu_mask |= CK_1510;
 723         if (cpu_is_omap310())
 724                 cpu_mask |= CK_310;
 725
 726         /* Pointers to these clocks are needed by code in clock.c */
 727         api_ck_p = &api_ck.clk;
 728         ck_dpll1_p = &ck_dpll1;
 729         ck_ref_p = &ck_ref;
 730
 731         pr_info("Clocks: ARM_SYSST: 0x%04x DPLL_CTL: 0x%04x ARM_CKCTL: 0x%04x\n",
 732                 omap_readw(ARM_SYSST), omap_readw(DPLL_CTL),
 733                 omap_readw(ARM_CKCTL));
 734
 735         /* We want to be in synchronous scalable mode */
 736         omap_writew(0x1000, ARM_SYSST);
 737
 738
 739         /*
 740          * Initially use the values set by bootloader. Determine PLL rate and
 741          * recalculate dependent clocks as if kernel had changed PLL or
 742          * divisors. See also omap1_clk_late_init() that can reprogram dpll1
 743          * after the SRAM is initialized.
 744          */
 745         {
 746                 unsigned pll_ctl_val = omap_readw(DPLL_CTL);
 747
 748                 ck_dpll1.rate = ck_ref.rate; /* Base xtal rate */
 749                 if (pll_ctl_val & 0x10) {
 750                         /* PLL enabled, apply multiplier and divisor */
 751                         if (pll_ctl_val & 0xf80)
 752                                 ck_dpll1.rate *= (pll_ctl_val & 0xf80) >> 7;
 753                         ck_dpll1.rate /= ((pll_ctl_val & 0x60) >> 5) + 1;
 754                 } else {
 755                         /* PLL disabled, apply bypass divisor */
 756                         switch (pll_ctl_val & 0xc) {
 757                         case 0:
 758                                 break;
 759                         case 0x4:
 760                                 ck_dpll1.rate /= 2;
 761                                 break;
 762                         default:
 763                                 ck_dpll1.rate /= 4;
 764                                 break;
 765                         }
 766                 }
 767         }
 768
 769         /* Amstrad Delta wants BCLK high when inactive */
 770         if (machine_is_ams_delta())
 771                 omap_writel(omap_readl(ULPD_CLOCK_CTRL) |
 772                                 (1 << SDW_MCLK_INV_BIT),
 773                                 ULPD_CLOCK_CTRL);
 774
 775         /* Turn off DSP and ARM_TIMXO. Make sure ARM_INTHCK is not divided */
 776         omap_writew(omap_readw(ARM_CKCTL) & 0x0fff, ARM_CKCTL);
 777
 778         /* Put DSP/MPUI into reset until needed */
 779         omap_writew(0, ARM_RSTCT1);
 780         omap_writew(1, ARM_RSTCT2);
 781         omap_writew(0x400, ARM_IDLECT1);
 782
 783         /*
 784          * According to OMAP5910 Erratum SYS_DMA_1, bit DMACK_REQ (bit 8)
 785          * of the ARM_IDLECT2 register must be set to zero. The power-on
 786          * default value of this bit is one.
 787          */
 788         omap_writew(0x0000, ARM_IDLECT2);       /* Turn LCD clock off also */
 789
 790         for (c = omap_clks; c < omap_clks + ARRAY_SIZE(omap_clks); c++) {
 791                 if (!(c->cpu & cpu_mask))
 792                         continue;
 793
 794                 if (c->lk.clk_hw->init) { /* NULL if provider already registered */
 795                         const struct clk_init_data *init = c->lk.clk_hw->init;
 796                         const char *name = c->lk.clk_hw->init->name;
 797                         int err;
 798
 799                         err = clk_hw_register(NULL, c->lk.clk_hw);
 800                         if (err < 0) {
 801                                 pr_err("failed to register clock \"%s\"! (%d)\n", name, err);
 802                                 /* may be tried again, restore init data */
 803                                 c->lk.clk_hw->init = init;
 804                                 continue;
 805                         }
 806                 }
 807
 808                 clk_hw_register_clkdev(c->lk.clk_hw, c->lk.con_id, c->lk.dev_id);
 809         }
 810
 811         omap1_show_rates();
 812
 813         return 0;
 814 }
 815
 816 #define OMAP1_DPLL1_SANE_VALUE  60000000
 817
 818 void __init omap1_clk_late_init(void)
 819 {
 820         unsigned long rate = ck_dpll1.rate;
 821
 822         /* Find the highest supported frequency and enable it */
 823         if (omap1_select_table_rate(&virtual_ck_mpu, ~0, arm_ck.rate)) {
 824                 pr_err("System frequencies not set, using default. Check your config.\n");
 825                 /*
 826                  * Reprogramming the DPLL is tricky, it must be done from SRAM.
 827                  */
 828                 omap_sram_reprogram_clock(0x2290, 0x0005);
 829                 ck_dpll1.rate = OMAP1_DPLL1_SANE_VALUE;
 830         }
 831         propagate_rate(&ck_dpll1);
 832         omap1_show_rates();
 833         loops_per_jiffy = cpufreq_scale(loops_per_jiffy, rate, ck_dpll1.rate);
 834 }