arch/arm/mach-imx/mx6/soc.c

   1 /*
   2  * (C) Copyright 2007
   3  * Sascha Hauer, Pengutronix
   4  *
   5  * (C) Copyright 2009 Freescale Semiconductor, Inc.
   6  *
   7  * SPDX-License-Identifier:     GPL-2.0+
   8  */
   9
  10 #include <common.h>
  11 #include <linux/errno.h>
  12 #include <asm/io.h>
  13 #include <asm/arch/imx-regs.h>
  14 #include <asm/arch/clock.h>
  15 #include <asm/arch/sys_proto.h>
  16 #include <asm/mach-imx/boot_mode.h>
  17 #include <asm/mach-imx/dma.h>
  18 #include <asm/mach-imx/hab.h>
  19 #include <stdbool.h>
  20 #include <asm/arch/mxc_hdmi.h>
  21 #include <asm/arch/crm_regs.h>
  22 #include <dm.h>
  23 #include <imx_thermal.h>
  24 #include <mmc.h>
  25
  26 enum ldo_reg {
  27         LDO_ARM,
  28         LDO_SOC,
  29         LDO_PU,
  30 };
  31
  32 struct scu_regs {
  33         u32     ctrl;
  34         u32     config;
  35         u32     status;
  36         u32     invalidate;
  37         u32     fpga_rev;
  38 };
  39
  40 #if defined(CONFIG_IMX_THERMAL)
  41 static const struct imx_thermal_plat imx6_thermal_plat = {
  42         .regs = (void *)ANATOP_BASE_ADDR,
  43         .fuse_bank = 1,
  44         .fuse_word = 6,
  45 };
  46
  47 U_BOOT_DEVICE(imx6_thermal) = {
  48         .name = "imx_thermal",
  49         .platdata = &imx6_thermal_plat,
  50 };
  51 #endif
  52
  53 #if defined(CONFIG_SECURE_BOOT)
  54 struct imx_sec_config_fuse_t const imx_sec_config_fuse = {
  55         .bank = 0,
  56         .word = 6,
  57 };
  58 #endif
  59
  60 u32 get_nr_cpus(void)
  61 {
  62         struct scu_regs *scu = (struct scu_regs *)SCU_BASE_ADDR;
  63         return readl(&scu->config) & 3;
  64 }
  65
  66 u32 get_cpu_rev(void)
  67 {
  68         struct anatop_regs *anatop = (struct anatop_regs *)ANATOP_BASE_ADDR;
  69         u32 reg = readl(&anatop->digprog_sololite);
  70         u32 type = ((reg >> 16) & 0xff);
  71         u32 major, cfg = 0;
  72
  73         if (type != MXC_CPU_MX6SL) {
  74                 reg = readl(&anatop->digprog);
  75                 struct scu_regs *scu = (struct scu_regs *)SCU_BASE_ADDR;
  76                 cfg = readl(&scu->config) & 3;
  77                 type = ((reg >> 16) & 0xff);
  78                 if (type == MXC_CPU_MX6DL) {
  79                         if (!cfg)
  80                                 type = MXC_CPU_MX6SOLO;
  81                 }
  82
  83                 if (type == MXC_CPU_MX6Q) {
  84                         if (cfg == 1)
  85                                 type = MXC_CPU_MX6D;
  86                 }
  87
  88         }
  89         major = ((reg >> 8) & 0xff);
  90         if ((major >= 1) &&
  91             ((type == MXC_CPU_MX6Q) || (type == MXC_CPU_MX6D))) {
  92                 major--;
  93                 type = MXC_CPU_MX6QP;
  94                 if (cfg == 1)
  95                         type = MXC_CPU_MX6DP;
  96         }
  97         reg &= 0xff;            /* mx6 silicon revision */
  98         return (type << 12) | (reg + (0x10 * (major + 1)));
  99 }
 100
 101 /*
 102  * OCOTP_CFG3[17:16] (see Fusemap Description Table offset 0x440)
 103  * defines a 2-bit SPEED_GRADING
 104  */
 105 #define OCOTP_CFG3_SPEED_SHIFT  16
 106 #define OCOTP_CFG3_SPEED_800MHZ 0
 107 #define OCOTP_CFG3_SPEED_850MHZ 1
 108 #define OCOTP_CFG3_SPEED_1GHZ   2
 109 #define OCOTP_CFG3_SPEED_1P2GHZ 3
 110
 111 /*
 112  * For i.MX6UL
 113  */
 114 #define OCOTP_CFG3_SPEED_528MHZ 1
 115 #define OCOTP_CFG3_SPEED_696MHZ 2
 116
 117 /*
 118  * For i.MX6ULL
 119  */
 120 #define OCOTP_CFG3_SPEED_792MHZ 2
 121 #define OCOTP_CFG3_SPEED_900MHZ 3
 122
 123 u32 get_cpu_speed_grade_hz(void)
 124 {
 125         struct ocotp_regs *ocotp = (struct ocotp_regs *)OCOTP_BASE_ADDR;
 126         struct fuse_bank *bank = &ocotp->bank[0];
 127         struct fuse_bank0_regs *fuse =
 128                 (struct fuse_bank0_regs *)bank->fuse_regs;
 129         uint32_t val;
 130
 131         val = readl(&fuse->cfg3);
 132         val >>= OCOTP_CFG3_SPEED_SHIFT;
 133         val &= 0x3;
 134
 135         if (is_mx6ul()) {
 136                 if (val == OCOTP_CFG3_SPEED_528MHZ)
 137                         return 528000000;
 138                 else if (val == OCOTP_CFG3_SPEED_696MHZ)
 139                         return 696000000;
 140                 else
 141                         return 0;
 142         }
 143
 144         if (is_mx6ull()) {
 145                 if (val == OCOTP_CFG3_SPEED_528MHZ)
 146                         return 528000000;
 147                 else if (val == OCOTP_CFG3_SPEED_792MHZ)
 148                         return 792000000;
 149                 else if (val == OCOTP_CFG3_SPEED_900MHZ)
 150                         return 900000000;
 151                 else
 152                         return 0;
 153         }
 154
 155         switch (val) {
 156         /* Valid for IMX6DQ */
 157         case OCOTP_CFG3_SPEED_1P2GHZ:
 158                 if (is_mx6dq() || is_mx6dqp())
 159                         return 1200000000;
 160         /* Valid for IMX6SX/IMX6SDL/IMX6DQ */
 161         case OCOTP_CFG3_SPEED_1GHZ:
 162                 return 996000000;
 163         /* Valid for IMX6DQ */
 164         case OCOTP_CFG3_SPEED_850MHZ:
 165                 if (is_mx6dq() || is_mx6dqp())
 166                         return 852000000;
 167         /* Valid for IMX6SX/IMX6SDL/IMX6DQ */
 168         case OCOTP_CFG3_SPEED_800MHZ:
 169                 return 792000000;
 170         }
 171         return 0;
 172 }
 173
 174 /*
 175  * OCOTP_MEM0[7:6] (see Fusemap Description Table offset 0x480)
 176  * defines a 2-bit Temperature Grade
 177  *
 178  * return temperature grade and min/max temperature in Celsius
 179  */
 180 #define OCOTP_MEM0_TEMP_SHIFT          6
 181
 182 u32 get_cpu_temp_grade(int *minc, int *maxc)
 183 {
 184         struct ocotp_regs *ocotp = (struct ocotp_regs *)OCOTP_BASE_ADDR;
 185         struct fuse_bank *bank = &ocotp->bank[1];
 186         struct fuse_bank1_regs *fuse =
 187                 (struct fuse_bank1_regs *)bank->fuse_regs;
 188         uint32_t val;
 189
 190         val = readl(&fuse->mem0);
 191         val >>= OCOTP_MEM0_TEMP_SHIFT;
 192         val &= 0x3;
 193
 194         if (minc && maxc) {
 195                 if (val == TEMP_AUTOMOTIVE) {
 196                         *minc = -40;
 197                         *maxc = 125;
 198                 } else if (val == TEMP_INDUSTRIAL) {
 199                         *minc = -40;
 200                         *maxc = 105;
 201                 } else if (val == TEMP_EXTCOMMERCIAL) {
 202                         *minc = -20;
 203                         *maxc = 105;
 204                 } else {
 205                         *minc = 0;
 206                         *maxc = 95;
 207                 }
 208         }
 209         return val;
 210 }
 211
 212 #ifdef CONFIG_REVISION_TAG
 213 u32 __weak get_board_rev(void)
 214 {
 215         u32 cpurev = get_cpu_rev();
 216         u32 type = ((cpurev >> 12) & 0xff);
 217         if (type == MXC_CPU_MX6SOLO)
 218                 cpurev = (MXC_CPU_MX6DL) << 12 | (cpurev & 0xFFF);
 219
 220         if (type == MXC_CPU_MX6D)
 221                 cpurev = (MXC_CPU_MX6Q) << 12 | (cpurev & 0xFFF);
 222
 223         return cpurev;
 224 }
 225 #endif
 226
 227 static void clear_ldo_ramp(void)
 228 {
 229         struct anatop_regs *anatop = (struct anatop_regs *)ANATOP_BASE_ADDR;
 230         int reg;
 231
 232         /* ROM may modify LDO ramp up time according to fuse setting, so in
 233          * order to be in the safe side we neeed to reset these settings to
 234          * match the reset value: 0'b00
 235          */
 236         reg = readl(&anatop->ana_misc2);
 237         reg &= ~(0x3f << 24);
 238         writel(reg, &anatop->ana_misc2);
 239 }
 240
 241 /*
 242  * Set the PMU_REG_CORE register
 243  *
 244  * Set LDO_SOC/PU/ARM regulators to the specified millivolt level.
 245  * Possible values are from 0.725V to 1.450V in steps of
 246  * 0.025V (25mV).
 247  */
 248 static int set_ldo_voltage(enum ldo_reg ldo, u32 mv)
 249 {
 250         struct anatop_regs *anatop = (struct anatop_regs *)ANATOP_BASE_ADDR;
 251         u32 val, step, old, reg = readl(&anatop->reg_core);
 252         u8 shift;
 253
 254         /* No LDO_SOC/PU/ARM */
 255         if (is_mx6sll())
 256                 return 0;
 257
 258         if (mv < 725)
 259                 val = 0x00;     /* Power gated off */
 260         else if (mv > 1450)
 261                 val = 0x1F;     /* Power FET switched full on. No regulation */
 262         else
 263                 val = (mv - 700) / 25;
 264
 265         clear_ldo_ramp();
 266
 267         switch (ldo) {
 268         case LDO_SOC:
 269                 shift = 18;
 270                 break;
 271         case LDO_PU:
 272                 shift = 9;
 273                 break;
 274         case LDO_ARM:
 275                 shift = 0;
 276                 break;
 277         default:
 278                 return -EINVAL;
 279         }
 280
 281         old = (reg & (0x1F << shift)) >> shift;
 282         step = abs(val - old);
 283         if (step == 0)
 284                 return 0;
 285
 286         reg = (reg & ~(0x1F << shift)) | (val << shift);
 287         writel(reg, &anatop->reg_core);
 288
 289         /*
 290          * The LDO ramp-up is based on 64 clock cycles of 24 MHz = 2.6 us per
 291          * step
 292          */
 293         udelay(3 * step);
 294
 295         return 0;
 296 }
 297
 298 static void set_ahb_rate(u32 val)
 299 {
 300         struct mxc_ccm_reg *mxc_ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
 301         u32 reg, div;
 302
 303         div = get_periph_clk() / val - 1;
 304         reg = readl(&mxc_ccm->cbcdr);
 305
 306         writel((reg & (~MXC_CCM_CBCDR_AHB_PODF_MASK)) |
 307                 (div << MXC_CCM_CBCDR_AHB_PODF_OFFSET), &mxc_ccm->cbcdr);
 308 }
 309
 310 static void clear_mmdc_ch_mask(void)
 311 {
 312         struct mxc_ccm_reg *mxc_ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
 313         u32 reg;
 314         reg = readl(&mxc_ccm->ccdr);
 315
 316         /* Clear MMDC channel mask */
 317         if (is_mx6sx() || is_mx6ul() || is_mx6ull() || is_mx6sl() || is_mx6sll())
 318                 reg &= ~(MXC_CCM_CCDR_MMDC_CH1_HS_MASK);
 319         else
 320                 reg &= ~(MXC_CCM_CCDR_MMDC_CH1_HS_MASK | MXC_CCM_CCDR_MMDC_CH0_HS_MASK);
 321         writel(reg, &mxc_ccm->ccdr);
 322 }
 323
 324 #define OCOTP_MEM0_REFTOP_TRIM_SHIFT          8
 325
 326 static void init_bandgap(void)
 327 {
 328         struct anatop_regs *anatop = (struct anatop_regs *)ANATOP_BASE_ADDR;
 329         struct ocotp_regs *ocotp = (struct ocotp_regs *)OCOTP_BASE_ADDR;
 330         struct fuse_bank *bank = &ocotp->bank[1];
 331         struct fuse_bank1_regs *fuse =
 332                 (struct fuse_bank1_regs *)bank->fuse_regs;
 333         uint32_t val;
 334
 335         /*
 336          * Ensure the bandgap has stabilized.
 337          */
 338         while (!(readl(&anatop->ana_misc0) & 0x80))
 339                 ;
 340         /*
 341          * For best noise performance of the analog blocks using the
 342          * outputs of the bandgap, the reftop_selfbiasoff bit should
 343          * be set.
 344          */
 345         writel(BM_ANADIG_ANA_MISC0_REFTOP_SELBIASOFF, &anatop->ana_misc0_set);
 346         /*
 347          * On i.MX6ULL,we need to set VBGADJ bits according to the
 348          * REFTOP_TRIM[3:0] in fuse table
 349          *      000 - set REFTOP_VBGADJ[2:0] to 3b'110,
 350          *      110 - set REFTOP_VBGADJ[2:0] to 3b'000,
 351          *      001 - set REFTOP_VBGADJ[2:0] to 3b'001,
 352          *      010 - set REFTOP_VBGADJ[2:0] to 3b'010,
 353          *      011 - set REFTOP_VBGADJ[2:0] to 3b'011,
 354          *      100 - set REFTOP_VBGADJ[2:0] to 3b'100,
 355          *      101 - set REFTOP_VBGADJ[2:0] to 3b'101,
 356          *      111 - set REFTOP_VBGADJ[2:0] to 3b'111,
 357          */
 358         if (is_mx6ull()) {
 359                 val = readl(&fuse->mem0);
 360                 val >>= OCOTP_MEM0_REFTOP_TRIM_SHIFT;
 361                 val &= 0x7;
 362
 363                 writel(val << BM_ANADIG_ANA_MISC0_REFTOP_VBGADJ_SHIFT,
 364                        &anatop->ana_misc0_set);
 365         }
 366 }
 367
 368 int arch_cpu_init(void)
 369 {
 370         struct mxc_ccm_reg *ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
 371
 372         init_aips();
 373
 374         /* Need to clear MMDC_CHx_MASK to make warm reset work. */
 375         clear_mmdc_ch_mask();
 376
 377         /*
 378          * Disable self-bias circuit in the analog bandap.
 379          * The self-bias circuit is used by the bandgap during startup.
 380          * This bit should be set after the bandgap has initialized.
 381          */
 382         init_bandgap();
 383
 384         if (!is_mx6ul() && !is_mx6ull()) {
 385                 /*
 386                  * When low freq boot is enabled, ROM will not set AHB
 387                  * freq, so we need to ensure AHB freq is 132MHz in such
 388                  * scenario.
 389                  *
 390                  * To i.MX6UL, when power up, default ARM core and
 391                  * AHB rate is 396M and 132M.
 392                  */
 393                 if (mxc_get_clock(MXC_ARM_CLK) == 396000000)
 394                         set_ahb_rate(132000000);
 395         }
 396
 397         if (is_mx6ul()) {
 398                 if (is_soc_rev(CHIP_REV_1_0) == 0) {
 399                         /*
 400                          * According to the design team's requirement on
 401                          * i.MX6UL,the PMIC_STBY_REQ PAD should be configured
 402                          * as open drain 100K (0x0000b8a0).
 403                          * Only exists on TO1.0
 404                          */
 405                         writel(0x0000b8a0, IOMUXC_BASE_ADDR + 0x29c);
 406                 } else {
 407                         /*
 408                          * From TO1.1, SNVS adds internal pull up control
 409                          * for POR_B, the register filed is GPBIT[1:0],
 410                          * after system boot up, it can be set to 2b'01
 411                          * to disable internal pull up.It can save about
 412                          * 30uA power in SNVS mode.
 413                          */
 414                         writel((readl(MX6UL_SNVS_LP_BASE_ADDR + 0x10) &
 415                                (~0x1400)) | 0x400,
 416                                MX6UL_SNVS_LP_BASE_ADDR + 0x10);
 417                 }
 418         }
 419
 420         if (is_mx6ull()) {
 421                 /*
 422                  * GPBIT[1:0] is suggested to set to 2'b11:
 423                  * 2'b00 : always PUP100K
 424                  * 2'b01 : PUP100K when PMIC_ON_REQ or SOC_NOT_FAIL
 425                  * 2'b10 : always disable PUP100K
 426                  * 2'b11 : PDN100K when SOC_FAIL, PUP100K when SOC_NOT_FAIL
 427                  * register offset is different from i.MX6UL, since
 428                  * i.MX6UL is fixed by ECO.
 429                  */
 430                 writel(readl(MX6UL_SNVS_LP_BASE_ADDR) |
 431                         0x3, MX6UL_SNVS_LP_BASE_ADDR);
 432         }
 433
 434         /* Set perclk to source from OSC 24MHz */
 435         if (is_mx6sl())
 436                 setbits_le32(&ccm->cscmr1, MXC_CCM_CSCMR1_PER_CLK_SEL_MASK);
 437
 438         imx_set_wdog_powerdown(false); /* Disable PDE bit of WMCR register */
 439
 440         if (is_mx6sx())
 441                 setbits_le32(&ccm->cscdr1, MXC_CCM_CSCDR1_UART_CLK_SEL);
 442
 443         init_src();
 444
 445         return 0;
 446 }
 447
 448 #ifdef CONFIG_ENV_IS_IN_MMC
 449 __weak int board_mmc_get_env_dev(int devno)
 450 {
 451         return CONFIG_SYS_MMC_ENV_DEV;
 452 }
 453
 454 static int mmc_get_boot_dev(void)
 455 {
 456         struct src *src_regs = (struct src *)SRC_BASE_ADDR;
 457         u32 soc_sbmr = readl(&src_regs->sbmr1);
 458         u32 bootsel;
 459         int devno;
 460
 461         /*
 462          * Refer to
 463          * "i.MX 6Dual/6Quad Applications Processor Reference Manual"
 464          * Chapter "8.5.3.1 Expansion Device eFUSE Configuration"
 465          * i.MX6SL/SX/UL has same layout.
 466          */
 467         bootsel = (soc_sbmr & 0x000000FF) >> 6;
 468
 469         /* No boot from sd/mmc */
 470         if (bootsel != 1)
 471                 return -1;
 472
 473         /* BOOT_CFG2[3] and BOOT_CFG2[4] */
 474         devno = (soc_sbmr & 0x00001800) >> 11;
 475
 476         return devno;
 477 }
 478
 479 int mmc_get_env_dev(void)
 480 {
 481         int devno = mmc_get_boot_dev();
 482
 483         /* If not boot from sd/mmc, use default value */
 484         if (devno < 0)
 485                 return CONFIG_SYS_MMC_ENV_DEV;
 486
 487         return board_mmc_get_env_dev(devno);
 488 }
 489
 490 #ifdef CONFIG_SYS_MMC_ENV_PART
 491 __weak int board_mmc_get_env_part(int devno)
 492 {
 493         return CONFIG_SYS_MMC_ENV_PART;
 494 }
 495
 496 uint mmc_get_env_part(struct mmc *mmc)
 497 {
 498         int devno = mmc_get_boot_dev();
 499
 500         /* If not boot from sd/mmc, use default value */
 501         if (devno < 0)
 502                 return CONFIG_SYS_MMC_ENV_PART;
 503
 504         return board_mmc_get_env_part(devno);
 505 }
 506 #endif
 507 #endif
 508
 509 int board_postclk_init(void)
 510 {
 511         /* NO LDO SOC on i.MX6SLL */
 512         if (is_mx6sll())
 513                 return 0;
 514
 515         set_ldo_voltage(LDO_SOC, 1175); /* Set VDDSOC to 1.175V */
 516
 517         return 0;
 518 }
 519
 520 #if defined(CONFIG_FEC_MXC)
 521 void imx_get_mac_from_fuse(int dev_id, unsigned char *mac)
 522 {
 523         struct ocotp_regs *ocotp = (struct ocotp_regs *)OCOTP_BASE_ADDR;
 524         struct fuse_bank *bank = &ocotp->bank[4];
 525         struct fuse_bank4_regs *fuse =
 526                         (struct fuse_bank4_regs *)bank->fuse_regs;
 527
 528         if ((is_mx6sx() || is_mx6ul() || is_mx6ull()) && dev_id == 1) {
 529                 u32 value = readl(&fuse->mac_addr2);
 530                 mac[0] = value >> 24 ;
 531                 mac[1] = value >> 16 ;
 532                 mac[2] = value >> 8 ;
 533                 mac[3] = value ;
 534
 535                 value = readl(&fuse->mac_addr1);
 536                 mac[4] = value >> 24 ;
 537                 mac[5] = value >> 16 ;
 538
 539         } else {
 540                 u32 value = readl(&fuse->mac_addr1);
 541                 mac[0] = (value >> 8);
 542                 mac[1] = value ;
 543
 544                 value = readl(&fuse->mac_addr0);
 545                 mac[2] = value >> 24 ;
 546                 mac[3] = value >> 16 ;
 547                 mac[4] = value >> 8 ;
 548                 mac[5] = value ;
 549         }
 550
 551 }
 552 #endif
 553
 554 /*
 555  * cfg_val will be used for
 556  * Boot_cfg4[7:0]:Boot_cfg3[7:0]:Boot_cfg2[7:0]:Boot_cfg1[7:0]
 557  * After reset, if GPR10[28] is 1, ROM will use GPR9[25:0]
 558  * instead of SBMR1 to determine the boot device.
 559  */
 560 const struct boot_mode soc_boot_modes[] = {
 561         {"normal",      MAKE_CFGVAL(0x00, 0x00, 0x00, 0x00)},
 562         /* reserved value should start rom usb */
 563 #if defined(CONFIG_MX6UL) || defined(CONFIG_MX6ULL)
 564         {"usb",         MAKE_CFGVAL(0x20, 0x00, 0x00, 0x00)},
 565 #else
 566         {"usb",         MAKE_CFGVAL(0x10, 0x00, 0x00, 0x00)},
 567 #endif
 568         {"sata",        MAKE_CFGVAL(0x20, 0x00, 0x00, 0x00)},
 569         {"ecspi1:0",    MAKE_CFGVAL(0x30, 0x00, 0x00, 0x08)},
 570         {"ecspi1:1",    MAKE_CFGVAL(0x30, 0x00, 0x00, 0x18)},
 571         {"ecspi1:2",    MAKE_CFGVAL(0x30, 0x00, 0x00, 0x28)},
 572         {"ecspi1:3",    MAKE_CFGVAL(0x30, 0x00, 0x00, 0x38)},
 573         /* 4 bit bus width */
 574         {"esdhc1",      MAKE_CFGVAL(0x40, 0x20, 0x00, 0x00)},
 575         {"esdhc2",      MAKE_CFGVAL(0x40, 0x28, 0x00, 0x00)},
 576         {"esdhc3",      MAKE_CFGVAL(0x40, 0x30, 0x00, 0x00)},
 577         {"esdhc4",      MAKE_CFGVAL(0x40, 0x38, 0x00, 0x00)},
 578         {NULL,          0},
 579 };
 580
 581 void reset_misc(void)
 582 {
 583 #ifdef CONFIG_VIDEO_MXS
 584         lcdif_power_down();
 585 #endif
 586 }
 587
 588 void s_init(void)
 589 {
 590         struct anatop_regs *anatop = (struct anatop_regs *)ANATOP_BASE_ADDR;
 591         struct mxc_ccm_reg *ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
 592         u32 mask480;
 593         u32 mask528;
 594         u32 reg, periph1, periph2;
 595
 596         if (is_mx6sx() || is_mx6ul() || is_mx6ull() || is_mx6sll())
 597                 return;
 598
 599         /* Due to hardware limitation, on MX6Q we need to gate/ungate all PFDs
 600          * to make sure PFD is working right, otherwise, PFDs may
 601          * not output clock after reset, MX6DL and MX6SL have added 396M pfd
 602          * workaround in ROM code, as bus clock need it
 603          */
 604
 605         mask480 = ANATOP_PFD_CLKGATE_MASK(0) |
 606                 ANATOP_PFD_CLKGATE_MASK(1) |
 607                 ANATOP_PFD_CLKGATE_MASK(2) |
 608                 ANATOP_PFD_CLKGATE_MASK(3);
 609         mask528 = ANATOP_PFD_CLKGATE_MASK(1) |
 610                 ANATOP_PFD_CLKGATE_MASK(3);
 611
 612         reg = readl(&ccm->cbcmr);
 613         periph2 = ((reg & MXC_CCM_CBCMR_PRE_PERIPH2_CLK_SEL_MASK)
 614                 >> MXC_CCM_CBCMR_PRE_PERIPH2_CLK_SEL_OFFSET);
 615         periph1 = ((reg & MXC_CCM_CBCMR_PRE_PERIPH_CLK_SEL_MASK)
 616                 >> MXC_CCM_CBCMR_PRE_PERIPH_CLK_SEL_OFFSET);
 617
 618         /* Checking if PLL2 PFD0 or PLL2 PFD2 is using for periph clock */
 619         if ((periph2 != 0x2) && (periph1 != 0x2))
 620                 mask528 |= ANATOP_PFD_CLKGATE_MASK(0);
 621
 622         if ((periph2 != 0x1) && (periph1 != 0x1) &&
 623                 (periph2 != 0x3) && (periph1 != 0x3))
 624                 mask528 |= ANATOP_PFD_CLKGATE_MASK(2);
 625
 626         writel(mask480, &anatop->pfd_480_set);
 627         writel(mask528, &anatop->pfd_528_set);
 628         writel(mask480, &anatop->pfd_480_clr);
 629         writel(mask528, &anatop->pfd_528_clr);
 630 }
 631
 632 #ifdef CONFIG_IMX_HDMI
 633 void imx_enable_hdmi_phy(void)
 634 {
 635         struct hdmi_regs *hdmi = (struct hdmi_regs *)HDMI_ARB_BASE_ADDR;
 636         u8 reg;
 637         reg = readb(&hdmi->phy_conf0);
 638         reg |= HDMI_PHY_CONF0_PDZ_MASK;
 639         writeb(reg, &hdmi->phy_conf0);
 640         udelay(3000);
 641         reg |= HDMI_PHY_CONF0_ENTMDS_MASK;
 642         writeb(reg, &hdmi->phy_conf0);
 643         udelay(3000);
 644         reg |= HDMI_PHY_CONF0_GEN2_TXPWRON_MASK;
 645         writeb(reg, &hdmi->phy_conf0);
 646         writeb(HDMI_MC_PHYRSTZ_ASSERT, &hdmi->mc_phyrstz);
 647 }
 648
 649 void imx_setup_hdmi(void)
 650 {
 651         struct mxc_ccm_reg *mxc_ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
 652         struct hdmi_regs *hdmi  = (struct hdmi_regs *)HDMI_ARB_BASE_ADDR;
 653         int reg, count;
 654         u8 val;
 655
 656         /* Turn on HDMI PHY clock */
 657         reg = readl(&mxc_ccm->CCGR2);
 658         reg |=  MXC_CCM_CCGR2_HDMI_TX_IAHBCLK_MASK|
 659                  MXC_CCM_CCGR2_HDMI_TX_ISFRCLK_MASK;
 660         writel(reg, &mxc_ccm->CCGR2);
 661         writeb(HDMI_MC_PHYRSTZ_DEASSERT, &hdmi->mc_phyrstz);
 662         reg = readl(&mxc_ccm->chsccdr);
 663         reg &= ~(MXC_CCM_CHSCCDR_IPU1_DI0_PRE_CLK_SEL_MASK|
 664                  MXC_CCM_CHSCCDR_IPU1_DI0_PODF_MASK|
 665                  MXC_CCM_CHSCCDR_IPU1_DI0_CLK_SEL_MASK);
 666         reg |= (CHSCCDR_PODF_DIVIDE_BY_3
 667                  << MXC_CCM_CHSCCDR_IPU1_DI0_PODF_OFFSET)
 668                  |(CHSCCDR_IPU_PRE_CLK_540M_PFD
 669                  << MXC_CCM_CHSCCDR_IPU1_DI0_PRE_CLK_SEL_OFFSET);
 670         writel(reg, &mxc_ccm->chsccdr);
 671
 672         /* Clear the overflow condition */
 673         if (readb(&hdmi->ih_fc_stat2) & HDMI_IH_FC_STAT2_OVERFLOW_MASK) {
 674                 /* TMDS software reset */
 675                 writeb((u8)~HDMI_MC_SWRSTZ_TMDSSWRST_REQ, &hdmi->mc_swrstz);
 676                 val = readb(&hdmi->fc_invidconf);
 677                 /* Need minimum 3 times to write to clear the register */
 678                 for (count = 0 ; count < 5 ; count++)
 679                         writeb(val, &hdmi->fc_invidconf);
 680         }
 681 }
 682 #endif
 683
 684 #ifdef CONFIG_IMX_BOOTAUX
 685 int arch_auxiliary_core_up(u32 core_id, u32 boot_private_data)
 686 {
 687         struct src *src_reg;
 688         u32 stack, pc;
 689
 690         if (!boot_private_data)
 691                 return -EINVAL;
 692
 693         stack = *(u32 *)boot_private_data;
 694         pc = *(u32 *)(boot_private_data + 4);
 695
 696         /* Set the stack and pc to M4 bootROM */
 697         writel(stack, M4_BOOTROM_BASE_ADDR);
 698         writel(pc, M4_BOOTROM_BASE_ADDR + 4);
 699
 700         /* Enable M4 */
 701         src_reg = (struct src *)SRC_BASE_ADDR;
 702         clrsetbits_le32(&src_reg->scr, SRC_SCR_M4C_NON_SCLR_RST_MASK,
 703                         SRC_SCR_M4_ENABLE_MASK);
 704
 705         return 0;
 706 }
 707
 708 int arch_auxiliary_core_check_up(u32 core_id)
 709 {
 710         struct src *src_reg = (struct src *)SRC_BASE_ADDR;
 711         unsigned val;
 712
 713         val = readl(&src_reg->scr);
 714
 715         if (val & SRC_SCR_M4C_NON_SCLR_RST_MASK)
 716                 return 0;  /* assert in reset */
 717
 718         return 1;
 719 }
 720 #endif