uboot/arch/arm/mach-tegra/tegra124/clock.c
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   1/*
   2 * (C) Copyright 2013-2015
   3 * NVIDIA Corporation <www.nvidia.com>
   4 *
   5 * SPDX-License-Identifier:     GPL-2.0+
   6 */
   7
   8/* Tegra124 Clock control functions */
   9
  10#include <common.h>
  11#include <asm/io.h>
  12#include <asm/arch/clock.h>
  13#include <asm/arch/sysctr.h>
  14#include <asm/arch/tegra.h>
  15#include <asm/arch-tegra/clk_rst.h>
  16#include <asm/arch-tegra/timer.h>
  17#include <div64.h>
  18#include <fdtdec.h>
  19
  20/*
  21 * Clock types that we can use as a source. The Tegra124 has muxes for the
  22 * peripheral clocks, and in most cases there are four options for the clock
  23 * source. This gives us a clock 'type' and exploits what commonality exists
  24 * in the device.
  25 *
  26 * Letters are obvious, except for T which means CLK_M, and S which means the
  27 * clock derived from 32KHz. Beware that CLK_M (also called OSC in the
  28 * datasheet) and PLL_M are different things. The former is the basic
  29 * clock supplied to the SOC from an external oscillator. The latter is the
  30 * memory clock PLL.
  31 *
  32 * See definitions in clock_id in the header file.
  33 */
  34enum clock_type_id {
  35        CLOCK_TYPE_AXPT,        /* PLL_A, PLL_X, PLL_P, CLK_M */
  36        CLOCK_TYPE_MCPA,        /* and so on */
  37        CLOCK_TYPE_MCPT,
  38        CLOCK_TYPE_PCM,
  39        CLOCK_TYPE_PCMT,
  40        CLOCK_TYPE_PDCT,
  41        CLOCK_TYPE_ACPT,
  42        CLOCK_TYPE_ASPTE,
  43        CLOCK_TYPE_PMDACD2T,
  44        CLOCK_TYPE_PCST,
  45        CLOCK_TYPE_DP,
  46
  47        CLOCK_TYPE_PC2CC3M,
  48        CLOCK_TYPE_PC2CC3S_T,
  49        CLOCK_TYPE_PC2CC3M_T,
  50        CLOCK_TYPE_PC2CC3M_T16, /* PC2CC3M_T, but w/16-bit divisor (I2C) */
  51        CLOCK_TYPE_MC2CC3P_A,
  52        CLOCK_TYPE_M,
  53        CLOCK_TYPE_MCPTM2C2C3,
  54        CLOCK_TYPE_PC2CC3T_S,
  55        CLOCK_TYPE_AC2CC3P_TS2,
  56
  57        CLOCK_TYPE_COUNT,
  58        CLOCK_TYPE_NONE = -1,   /* invalid clock type */
  59};
  60
  61enum {
  62        CLOCK_MAX_MUX   = 8     /* number of source options for each clock */
  63};
  64
  65/*
  66 * Clock source mux for each clock type. This just converts our enum into
  67 * a list of mux sources for use by the code.
  68 *
  69 * Note:
  70 *  The extra column in each clock source array is used to store the mask
  71 *  bits in its register for the source.
  72 */
  73#define CLK(x) CLOCK_ID_ ## x
  74static enum clock_id clock_source[CLOCK_TYPE_COUNT][CLOCK_MAX_MUX+1] = {
  75        { CLK(AUDIO),   CLK(XCPU),      CLK(PERIPH),    CLK(OSC),
  76                CLK(NONE),      CLK(NONE),      CLK(NONE),      CLK(NONE),
  77                MASK_BITS_31_30},
  78        { CLK(MEMORY),  CLK(CGENERAL),  CLK(PERIPH),    CLK(AUDIO),
  79                CLK(NONE),      CLK(NONE),      CLK(NONE),      CLK(NONE),
  80                MASK_BITS_31_30},
  81        { CLK(MEMORY),  CLK(CGENERAL),  CLK(PERIPH),    CLK(OSC),
  82                CLK(NONE),      CLK(NONE),      CLK(NONE),      CLK(NONE),
  83                MASK_BITS_31_30},
  84        { CLK(PERIPH),  CLK(CGENERAL),  CLK(MEMORY),    CLK(NONE),
  85                CLK(NONE),      CLK(NONE),      CLK(NONE),      CLK(NONE),
  86                MASK_BITS_31_30},
  87        { CLK(PERIPH),  CLK(CGENERAL),  CLK(MEMORY),    CLK(OSC),
  88                CLK(NONE),      CLK(NONE),      CLK(NONE),      CLK(NONE),
  89                MASK_BITS_31_30},
  90        { CLK(PERIPH),  CLK(DISPLAY),   CLK(CGENERAL),  CLK(OSC),
  91                CLK(NONE),      CLK(NONE),      CLK(NONE),      CLK(NONE),
  92                MASK_BITS_31_30},
  93        { CLK(AUDIO),   CLK(CGENERAL),  CLK(PERIPH),    CLK(OSC),
  94                CLK(NONE),      CLK(NONE),      CLK(NONE),      CLK(NONE),
  95                MASK_BITS_31_30},
  96        { CLK(AUDIO),   CLK(SFROM32KHZ),        CLK(PERIPH),    CLK(OSC),
  97                CLK(EPCI),      CLK(NONE),      CLK(NONE),      CLK(NONE),
  98                MASK_BITS_31_29},
  99        { CLK(PERIPH),  CLK(MEMORY),    CLK(DISPLAY),   CLK(AUDIO),
 100                CLK(CGENERAL),  CLK(DISPLAY2),  CLK(OSC),       CLK(NONE),
 101                MASK_BITS_31_29},
 102        { CLK(PERIPH),  CLK(CGENERAL),  CLK(SFROM32KHZ),        CLK(OSC),
 103                CLK(NONE),      CLK(NONE),      CLK(NONE),      CLK(NONE),
 104                MASK_BITS_31_28},
 105        /* CLOCK_TYPE_DP */
 106        { CLK(NONE),    CLK(NONE),      CLK(NONE),      CLK(NONE),
 107                CLK(NONE),      CLK(NONE),      CLK(NONE),      CLK(NONE),
 108                MASK_BITS_31_28},
 109
 110        /* Additional clock types on Tegra114+ */
 111        /* CLOCK_TYPE_PC2CC3M */
 112        { CLK(PERIPH),  CLK(CGENERAL2), CLK(CGENERAL),  CLK(CGENERAL3),
 113                CLK(MEMORY),    CLK(NONE),      CLK(NONE),      CLK(NONE),
 114                MASK_BITS_31_29},
 115        /* CLOCK_TYPE_PC2CC3S_T */
 116        { CLK(PERIPH),  CLK(CGENERAL2), CLK(CGENERAL),  CLK(CGENERAL3),
 117                CLK(SFROM32KHZ), CLK(NONE),     CLK(OSC),       CLK(NONE),
 118                MASK_BITS_31_29},
 119        /* CLOCK_TYPE_PC2CC3M_T */
 120        { CLK(PERIPH),  CLK(CGENERAL2), CLK(CGENERAL),  CLK(CGENERAL3),
 121                CLK(MEMORY),    CLK(NONE),      CLK(OSC),       CLK(NONE),
 122                MASK_BITS_31_29},
 123        /* CLOCK_TYPE_PC2CC3M_T, w/16-bit divisor (I2C) */
 124        { CLK(PERIPH),  CLK(CGENERAL2), CLK(CGENERAL),  CLK(CGENERAL3),
 125                CLK(MEMORY),    CLK(NONE),      CLK(OSC),       CLK(NONE),
 126                MASK_BITS_31_29},
 127        /* CLOCK_TYPE_MC2CC3P_A */
 128        { CLK(MEMORY),  CLK(CGENERAL2), CLK(CGENERAL),  CLK(CGENERAL3),
 129                CLK(PERIPH),    CLK(NONE),      CLK(AUDIO),     CLK(NONE),
 130                MASK_BITS_31_29},
 131        /* CLOCK_TYPE_M */
 132        { CLK(MEMORY),          CLK(NONE),      CLK(NONE),      CLK(NONE),
 133                CLK(NONE),      CLK(NONE),      CLK(NONE),      CLK(NONE),
 134                MASK_BITS_31_30},
 135        /* CLOCK_TYPE_MCPTM2C2C3 */
 136        { CLK(MEMORY),  CLK(CGENERAL),  CLK(PERIPH),    CLK(OSC),
 137                CLK(MEMORY2),   CLK(CGENERAL2), CLK(CGENERAL3), CLK(NONE),
 138                MASK_BITS_31_29},
 139        /* CLOCK_TYPE_PC2CC3T_S */
 140        { CLK(PERIPH),  CLK(CGENERAL2), CLK(CGENERAL),  CLK(CGENERAL3),
 141                CLK(OSC),       CLK(NONE),      CLK(SFROM32KHZ), CLK(NONE),
 142                MASK_BITS_31_29},
 143        /* CLOCK_TYPE_AC2CC3P_TS2 */
 144        { CLK(AUDIO),   CLK(CGENERAL2), CLK(CGENERAL),  CLK(CGENERAL3),
 145                CLK(PERIPH),    CLK(NONE),      CLK(OSC),       CLK(SRC2),
 146                MASK_BITS_31_29},
 147};
 148
 149/*
 150 * Clock type for each peripheral clock source. We put the name in each
 151 * record just so it is easy to match things up
 152 */
 153#define TYPE(name, type) type
 154static enum clock_type_id clock_periph_type[PERIPHC_COUNT] = {
 155        /* 0x00 */
 156        TYPE(PERIPHC_I2S1,      CLOCK_TYPE_AXPT),
 157        TYPE(PERIPHC_I2S2,      CLOCK_TYPE_AXPT),
 158        TYPE(PERIPHC_SPDIF_OUT, CLOCK_TYPE_AXPT),
 159        TYPE(PERIPHC_SPDIF_IN,  CLOCK_TYPE_PC2CC3M),
 160        TYPE(PERIPHC_PWM,       CLOCK_TYPE_PC2CC3S_T),
 161        TYPE(PERIPHC_05h,       CLOCK_TYPE_NONE),
 162        TYPE(PERIPHC_SBC2,      CLOCK_TYPE_PC2CC3M_T),
 163        TYPE(PERIPHC_SBC3,      CLOCK_TYPE_PC2CC3M_T),
 164
 165        /* 0x08 */
 166        TYPE(PERIPHC_08h,       CLOCK_TYPE_NONE),
 167        TYPE(PERIPHC_I2C1,      CLOCK_TYPE_PC2CC3M_T16),
 168        TYPE(PERIPHC_I2C5,      CLOCK_TYPE_PC2CC3M_T16),
 169        TYPE(PERIPHC_0bh,       CLOCK_TYPE_NONE),
 170        TYPE(PERIPHC_0ch,       CLOCK_TYPE_NONE),
 171        TYPE(PERIPHC_SBC1,      CLOCK_TYPE_PC2CC3M_T),
 172        TYPE(PERIPHC_DISP1,     CLOCK_TYPE_PMDACD2T),
 173        TYPE(PERIPHC_DISP2,     CLOCK_TYPE_PMDACD2T),
 174
 175        /* 0x10 */
 176        TYPE(PERIPHC_10h,       CLOCK_TYPE_NONE),
 177        TYPE(PERIPHC_11h,       CLOCK_TYPE_NONE),
 178        TYPE(PERIPHC_VI,        CLOCK_TYPE_MC2CC3P_A),
 179        TYPE(PERIPHC_13h,       CLOCK_TYPE_NONE),
 180        TYPE(PERIPHC_SDMMC1,    CLOCK_TYPE_PC2CC3M_T),
 181        TYPE(PERIPHC_SDMMC2,    CLOCK_TYPE_PC2CC3M_T),
 182        TYPE(PERIPHC_16h,       CLOCK_TYPE_NONE),
 183        TYPE(PERIPHC_17h,       CLOCK_TYPE_NONE),
 184
 185        /* 0x18 */
 186        TYPE(PERIPHC_18h,       CLOCK_TYPE_NONE),
 187        TYPE(PERIPHC_SDMMC4,    CLOCK_TYPE_PC2CC3M_T),
 188        TYPE(PERIPHC_VFIR,      CLOCK_TYPE_PC2CC3M_T),
 189        TYPE(PERIPHC_1Bh,       CLOCK_TYPE_NONE),
 190        TYPE(PERIPHC_1Ch,       CLOCK_TYPE_NONE),
 191        TYPE(PERIPHC_HSI,       CLOCK_TYPE_PC2CC3M_T),
 192        TYPE(PERIPHC_UART1,     CLOCK_TYPE_PC2CC3M_T),
 193        TYPE(PERIPHC_UART2,     CLOCK_TYPE_PC2CC3M_T),
 194
 195        /* 0x20 */
 196        TYPE(PERIPHC_HOST1X,    CLOCK_TYPE_MC2CC3P_A),
 197        TYPE(PERIPHC_21h,       CLOCK_TYPE_NONE),
 198        TYPE(PERIPHC_22h,       CLOCK_TYPE_NONE),
 199        TYPE(PERIPHC_HDMI,      CLOCK_TYPE_PMDACD2T),
 200        TYPE(PERIPHC_24h,       CLOCK_TYPE_NONE),
 201        TYPE(PERIPHC_25h,       CLOCK_TYPE_NONE),
 202        TYPE(PERIPHC_I2C2,      CLOCK_TYPE_PC2CC3M_T16),
 203        TYPE(PERIPHC_EMC,       CLOCK_TYPE_MCPTM2C2C3),
 204
 205        /* 0x28 */
 206        TYPE(PERIPHC_UART3,     CLOCK_TYPE_PC2CC3M_T),
 207        TYPE(PERIPHC_29h,       CLOCK_TYPE_NONE),
 208        TYPE(PERIPHC_VI_SENSOR, CLOCK_TYPE_MC2CC3P_A),
 209        TYPE(PERIPHC_2bh,       CLOCK_TYPE_NONE),
 210        TYPE(PERIPHC_2ch,       CLOCK_TYPE_NONE),
 211        TYPE(PERIPHC_SBC4,      CLOCK_TYPE_PC2CC3M_T),
 212        TYPE(PERIPHC_I2C3,      CLOCK_TYPE_PC2CC3M_T16),
 213        TYPE(PERIPHC_SDMMC3,    CLOCK_TYPE_PC2CC3M_T),
 214
 215        /* 0x30 */
 216        TYPE(PERIPHC_UART4,     CLOCK_TYPE_PC2CC3M_T),
 217        TYPE(PERIPHC_UART5,     CLOCK_TYPE_PC2CC3M_T),
 218        TYPE(PERIPHC_VDE,       CLOCK_TYPE_PC2CC3M_T),
 219        TYPE(PERIPHC_OWR,       CLOCK_TYPE_PC2CC3M_T),
 220        TYPE(PERIPHC_NOR,       CLOCK_TYPE_PC2CC3M_T),
 221        TYPE(PERIPHC_CSITE,     CLOCK_TYPE_PC2CC3M_T),
 222        TYPE(PERIPHC_I2S0,      CLOCK_TYPE_AXPT),
 223        TYPE(PERIPHC_DTV,       CLOCK_TYPE_NONE),
 224
 225        /* 0x38 */
 226        TYPE(PERIPHC_38h,       CLOCK_TYPE_NONE),
 227        TYPE(PERIPHC_39h,       CLOCK_TYPE_NONE),
 228        TYPE(PERIPHC_3ah,       CLOCK_TYPE_NONE),
 229        TYPE(PERIPHC_3bh,       CLOCK_TYPE_NONE),
 230        TYPE(PERIPHC_MSENC,     CLOCK_TYPE_MC2CC3P_A),
 231        TYPE(PERIPHC_TSEC,      CLOCK_TYPE_PC2CC3M_T),
 232        TYPE(PERIPHC_3eh,       CLOCK_TYPE_NONE),
 233        TYPE(PERIPHC_OSC,       CLOCK_TYPE_NONE),
 234
 235        /* 0x40 */
 236        TYPE(PERIPHC_40h,       CLOCK_TYPE_NONE),       /* start with 0x3b0 */
 237        TYPE(PERIPHC_MSELECT,   CLOCK_TYPE_PC2CC3M_T),
 238        TYPE(PERIPHC_TSENSOR,   CLOCK_TYPE_PC2CC3T_S),
 239        TYPE(PERIPHC_I2S3,      CLOCK_TYPE_AXPT),
 240        TYPE(PERIPHC_I2S4,      CLOCK_TYPE_AXPT),
 241        TYPE(PERIPHC_I2C4,      CLOCK_TYPE_PC2CC3M_T16),
 242        TYPE(PERIPHC_SBC5,      CLOCK_TYPE_PC2CC3M_T),
 243        TYPE(PERIPHC_SBC6,      CLOCK_TYPE_PC2CC3M_T),
 244
 245        /* 0x48 */
 246        TYPE(PERIPHC_AUDIO,     CLOCK_TYPE_AC2CC3P_TS2),
 247        TYPE(PERIPHC_49h,       CLOCK_TYPE_NONE),
 248        TYPE(PERIPHC_DAM0,      CLOCK_TYPE_AC2CC3P_TS2),
 249        TYPE(PERIPHC_DAM1,      CLOCK_TYPE_AC2CC3P_TS2),
 250        TYPE(PERIPHC_DAM2,      CLOCK_TYPE_AC2CC3P_TS2),
 251        TYPE(PERIPHC_HDA2CODEC2X, CLOCK_TYPE_PC2CC3M_T),
 252        TYPE(PERIPHC_ACTMON,    CLOCK_TYPE_PC2CC3S_T),
 253        TYPE(PERIPHC_EXTPERIPH1, CLOCK_TYPE_ASPTE),
 254
 255        /* 0x50 */
 256        TYPE(PERIPHC_EXTPERIPH2, CLOCK_TYPE_ASPTE),
 257        TYPE(PERIPHC_EXTPERIPH3, CLOCK_TYPE_ASPTE),
 258        TYPE(PERIPHC_52h,       CLOCK_TYPE_NONE),
 259        TYPE(PERIPHC_I2CSLOW,   CLOCK_TYPE_PC2CC3S_T),
 260        TYPE(PERIPHC_SYS,       CLOCK_TYPE_NONE),
 261        TYPE(PERIPHC_55h,       CLOCK_TYPE_NONE),
 262        TYPE(PERIPHC_56h,       CLOCK_TYPE_NONE),
 263        TYPE(PERIPHC_57h,       CLOCK_TYPE_NONE),
 264
 265        /* 0x58 */
 266        TYPE(PERIPHC_58h,       CLOCK_TYPE_NONE),
 267        TYPE(PERIPHC_SOR,       CLOCK_TYPE_NONE),
 268        TYPE(PERIPHC_5ah,       CLOCK_TYPE_NONE),
 269        TYPE(PERIPHC_5bh,       CLOCK_TYPE_NONE),
 270        TYPE(PERIPHC_SATAOOB,   CLOCK_TYPE_PCMT),
 271        TYPE(PERIPHC_SATA,      CLOCK_TYPE_PCMT),
 272        TYPE(PERIPHC_HDA,       CLOCK_TYPE_PC2CC3M_T),
 273        TYPE(PERIPHC_5fh,       CLOCK_TYPE_NONE),
 274
 275        /* 0x60 */
 276        TYPE(PERIPHC_XUSB_CORE_HOST, CLOCK_TYPE_NONE),
 277        TYPE(PERIPHC_XUSB_FALCON, CLOCK_TYPE_NONE),
 278        TYPE(PERIPHC_XUSB_FS,   CLOCK_TYPE_NONE),
 279        TYPE(PERIPHC_XUSB_CORE_DEV, CLOCK_TYPE_NONE),
 280        TYPE(PERIPHC_XUSB_SS,   CLOCK_TYPE_NONE),
 281        TYPE(PERIPHC_CILAB,     CLOCK_TYPE_NONE),
 282        TYPE(PERIPHC_CILCD,     CLOCK_TYPE_NONE),
 283        TYPE(PERIPHC_CILE,      CLOCK_TYPE_NONE),
 284
 285        /* 0x68 */
 286        TYPE(PERIPHC_DSIA_LP,   CLOCK_TYPE_NONE),
 287        TYPE(PERIPHC_DSIB_LP,   CLOCK_TYPE_NONE),
 288        TYPE(PERIPHC_ENTROPY,   CLOCK_TYPE_NONE),
 289        TYPE(PERIPHC_DVFS_REF,  CLOCK_TYPE_NONE),
 290        TYPE(PERIPHC_DVFS_SOC,  CLOCK_TYPE_NONE),
 291        TYPE(PERIPHC_TRACECLKIN, CLOCK_TYPE_NONE),
 292        TYPE(PERIPHC_ADX0,      CLOCK_TYPE_NONE),
 293        TYPE(PERIPHC_AMX0,      CLOCK_TYPE_NONE),
 294
 295        /* 0x70 */
 296        TYPE(PERIPHC_EMC_LATENCY, CLOCK_TYPE_NONE),
 297        TYPE(PERIPHC_SOC_THERM, CLOCK_TYPE_NONE),
 298        TYPE(PERIPHC_72h,       CLOCK_TYPE_NONE),
 299        TYPE(PERIPHC_73h,       CLOCK_TYPE_NONE),
 300        TYPE(PERIPHC_74h,       CLOCK_TYPE_NONE),
 301        TYPE(PERIPHC_75h,       CLOCK_TYPE_NONE),
 302        TYPE(PERIPHC_VI_SENSOR2, CLOCK_TYPE_NONE),
 303        TYPE(PERIPHC_I2C6,      CLOCK_TYPE_PC2CC3M_T16),
 304
 305        /* 0x78 */
 306        TYPE(PERIPHC_78h,       CLOCK_TYPE_NONE),
 307        TYPE(PERIPHC_EMC_DLL,   CLOCK_TYPE_MCPTM2C2C3),
 308        TYPE(PERIPHC_HDMI_AUDIO, CLOCK_TYPE_NONE),
 309        TYPE(PERIPHC_CLK72MHZ,  CLOCK_TYPE_NONE),
 310        TYPE(PERIPHC_ADX1,      CLOCK_TYPE_AC2CC3P_TS2),
 311        TYPE(PERIPHC_AMX1,      CLOCK_TYPE_AC2CC3P_TS2),
 312        TYPE(PERIPHC_VIC,       CLOCK_TYPE_NONE),
 313        TYPE(PERIPHC_7Fh,       CLOCK_TYPE_NONE),
 314};
 315
 316/*
 317 * This array translates a periph_id to a periphc_internal_id
 318 *
 319 * Not present/matched up:
 320 *      uint vi_sensor;  _VI_SENSOR_0,          0x1A8
 321 *      SPDIF - which is both 0x08 and 0x0c
 322 *
 323 */
 324#define NONE(name) (-1)
 325#define OFFSET(name, value) PERIPHC_ ## name
 326static s8 periph_id_to_internal_id[PERIPH_ID_COUNT] = {
 327        /* Low word: 31:0 */
 328        NONE(CPU),
 329        NONE(COP),
 330        NONE(TRIGSYS),
 331        NONE(ISPB),
 332        NONE(RESERVED4),
 333        NONE(TMR),
 334        PERIPHC_UART1,
 335        PERIPHC_UART2,  /* and vfir 0x68 */
 336
 337        /* 8 */
 338        NONE(GPIO),
 339        PERIPHC_SDMMC2,
 340        PERIPHC_SPDIF_IN,
 341        PERIPHC_I2S1,
 342        PERIPHC_I2C1,
 343        NONE(RESERVED13),
 344        PERIPHC_SDMMC1,
 345        PERIPHC_SDMMC4,
 346
 347        /* 16 */
 348        NONE(TCW),
 349        PERIPHC_PWM,
 350        PERIPHC_I2S2,
 351        NONE(RESERVED19),
 352        PERIPHC_VI,
 353        NONE(RESERVED21),
 354        NONE(USBD),
 355        NONE(ISP),
 356
 357        /* 24 */
 358        NONE(RESERVED24),
 359        NONE(RESERVED25),
 360        PERIPHC_DISP2,
 361        PERIPHC_DISP1,
 362        PERIPHC_HOST1X,
 363        NONE(VCP),
 364        PERIPHC_I2S0,
 365        NONE(CACHE2),
 366
 367        /* Middle word: 63:32 */
 368        NONE(MEM),
 369        NONE(AHBDMA),
 370        NONE(APBDMA),
 371        NONE(RESERVED35),
 372        NONE(RESERVED36),
 373        NONE(STAT_MON),
 374        NONE(RESERVED38),
 375        NONE(FUSE),
 376
 377        /* 40 */
 378        NONE(KFUSE),
 379        PERIPHC_SBC1,           /* SBCx = SPIx */
 380        PERIPHC_NOR,
 381        NONE(RESERVED43),
 382        PERIPHC_SBC2,
 383        NONE(XIO),
 384        PERIPHC_SBC3,
 385        PERIPHC_I2C5,
 386
 387        /* 48 */
 388        NONE(DSI),
 389        NONE(RESERVED49),
 390        PERIPHC_HSI,
 391        PERIPHC_HDMI,
 392        NONE(CSI),
 393        NONE(RESERVED53),
 394        PERIPHC_I2C2,
 395        PERIPHC_UART3,
 396
 397        /* 56 */
 398        NONE(MIPI_CAL),
 399        PERIPHC_EMC,
 400        NONE(USB2),
 401        NONE(USB3),
 402        NONE(RESERVED60),
 403        PERIPHC_VDE,
 404        NONE(BSEA),
 405        NONE(BSEV),
 406
 407        /* Upper word 95:64 */
 408        NONE(RESERVED64),
 409        PERIPHC_UART4,
 410        PERIPHC_UART5,
 411        PERIPHC_I2C3,
 412        PERIPHC_SBC4,
 413        PERIPHC_SDMMC3,
 414        NONE(PCIE),
 415        PERIPHC_OWR,
 416
 417        /* 72 */
 418        NONE(AFI),
 419        PERIPHC_CSITE,
 420        NONE(PCIEXCLK),
 421        NONE(AVPUCQ),
 422        NONE(LA),
 423        NONE(TRACECLKIN),
 424        NONE(SOC_THERM),
 425        NONE(DTV),
 426
 427        /* 80 */
 428        NONE(RESERVED80),
 429        PERIPHC_I2CSLOW,
 430        NONE(DSIB),
 431        PERIPHC_TSEC,
 432        NONE(RESERVED84),
 433        NONE(RESERVED85),
 434        NONE(RESERVED86),
 435        NONE(EMUCIF),
 436
 437        /* 88 */
 438        NONE(RESERVED88),
 439        NONE(XUSB_HOST),
 440        NONE(RESERVED90),
 441        PERIPHC_MSENC,
 442        NONE(RESERVED92),
 443        NONE(RESERVED93),
 444        NONE(RESERVED94),
 445        NONE(XUSB_DEV),
 446
 447        /* V word: 31:0 */
 448        NONE(CPUG),
 449        NONE(CPULP),
 450        NONE(V_RESERVED2),
 451        PERIPHC_MSELECT,
 452        NONE(V_RESERVED4),
 453        PERIPHC_I2S3,
 454        PERIPHC_I2S4,
 455        PERIPHC_I2C4,
 456
 457        /* 104 */
 458        PERIPHC_SBC5,
 459        PERIPHC_SBC6,
 460        PERIPHC_AUDIO,
 461        NONE(APBIF),
 462        PERIPHC_DAM0,
 463        PERIPHC_DAM1,
 464        PERIPHC_DAM2,
 465        PERIPHC_HDA2CODEC2X,
 466
 467        /* 112 */
 468        NONE(ATOMICS),
 469        NONE(V_RESERVED17),
 470        NONE(V_RESERVED18),
 471        NONE(V_RESERVED19),
 472        NONE(V_RESERVED20),
 473        NONE(V_RESERVED21),
 474        NONE(V_RESERVED22),
 475        PERIPHC_ACTMON,
 476
 477        /* 120 */
 478        PERIPHC_EXTPERIPH1,
 479        NONE(EXTPERIPH2),
 480        NONE(EXTPERIPH3),
 481        NONE(OOB),
 482        PERIPHC_SATA,
 483        PERIPHC_HDA,
 484        NONE(TZRAM),
 485        NONE(SE),
 486
 487        /* W word: 31:0 */
 488        NONE(HDA2HDMICODEC),
 489        NONE(SATACOLD),
 490        NONE(W_RESERVED2),
 491        NONE(W_RESERVED3),
 492        NONE(W_RESERVED4),
 493        NONE(W_RESERVED5),
 494        NONE(W_RESERVED6),
 495        NONE(W_RESERVED7),
 496
 497        /* 136 */
 498        NONE(CEC),
 499        NONE(W_RESERVED9),
 500        NONE(W_RESERVED10),
 501        NONE(W_RESERVED11),
 502        NONE(W_RESERVED12),
 503        NONE(W_RESERVED13),
 504        NONE(XUSB_PADCTL),
 505        NONE(W_RESERVED15),
 506
 507        /* 144 */
 508        NONE(W_RESERVED16),
 509        NONE(W_RESERVED17),
 510        NONE(W_RESERVED18),
 511        NONE(W_RESERVED19),
 512        NONE(W_RESERVED20),
 513        NONE(ENTROPY),
 514        NONE(DDS),
 515        NONE(W_RESERVED23),
 516
 517        /* 152 */
 518        NONE(DP2),
 519        NONE(AMX0),
 520        NONE(ADX0),
 521        NONE(DVFS),
 522        NONE(XUSB_SS),
 523        NONE(W_RESERVED29),
 524        NONE(W_RESERVED30),
 525        NONE(W_RESERVED31),
 526
 527        /* X word: 31:0 */
 528        NONE(SPARE),
 529        NONE(X_RESERVED1),
 530        NONE(X_RESERVED2),
 531        NONE(X_RESERVED3),
 532        NONE(CAM_MCLK),
 533        NONE(CAM_MCLK2),
 534        PERIPHC_I2C6,
 535        NONE(X_RESERVED7),
 536
 537        /* 168 */
 538        NONE(X_RESERVED8),
 539        NONE(X_RESERVED9),
 540        NONE(X_RESERVED10),
 541        NONE(VIM2_CLK),
 542        NONE(X_RESERVED12),
 543        NONE(X_RESERVED13),
 544        NONE(EMC_DLL),
 545        NONE(X_RESERVED15),
 546
 547        /* 176 */
 548        NONE(HDMI_AUDIO),
 549        NONE(CLK72MHZ),
 550        NONE(VIC),
 551        NONE(X_RESERVED19),
 552        NONE(ADX1),
 553        NONE(DPAUX),
 554        PERIPHC_SOR,
 555        NONE(X_RESERVED23),
 556
 557        /* 184 */
 558        NONE(GPU),
 559        NONE(AMX1),
 560        NONE(X_RESERVED26),
 561        NONE(X_RESERVED27),
 562        NONE(X_RESERVED28),
 563        NONE(X_RESERVED29),
 564        NONE(X_RESERVED30),
 565        NONE(X_RESERVED31),
 566};
 567
 568/*
 569 * PLL divider shift/mask tables for all PLL IDs.
 570 */
 571struct clk_pll_info tegra_pll_info_table[CLOCK_ID_PLL_COUNT] = {
 572        /*
 573         * T124: same as T114, some deviations from T2x/T30. Adds PLLDP.
 574         * NOTE: If kcp_mask/kvco_mask == 0, they're not used in that PLL (PLLX, etc.)
 575         *       If lock_ena or lock_det are >31, they're not used in that PLL.
 576         */
 577
 578        { .m_shift = 0, .m_mask = 0xFF, .n_shift = 8, .n_mask = 0xFF,  .p_shift = 20, .p_mask = 0x0F,
 579          .lock_ena = 24, .lock_det = 27, .kcp_shift = 28, .kcp_mask = 3, .kvco_shift = 27, .kvco_mask = 1 },   /* PLLC */
 580        { .m_shift = 0, .m_mask = 0xFF, .n_shift = 8, .n_mask = 0xFF,  .p_shift = 0,  .p_mask = 0,
 581          .lock_ena = 0,  .lock_det = 27, .kcp_shift = 1, .kcp_mask = 3, .kvco_shift = 0, .kvco_mask = 1 },     /* PLLM */
 582        { .m_shift = 0, .m_mask = 0x1F, .n_shift = 8, .n_mask = 0x3FF, .p_shift = 20, .p_mask = 0x07,
 583          .lock_ena = 18, .lock_det = 27, .kcp_shift = 8, .kcp_mask = 0xF, .kvco_shift = 4, .kvco_mask = 0xF }, /* PLLP */
 584        { .m_shift = 0, .m_mask = 0x1F, .n_shift = 8, .n_mask = 0x3FF, .p_shift = 20, .p_mask = 0x07,
 585          .lock_ena = 18, .lock_det = 27, .kcp_shift = 8, .kcp_mask = 0xF, .kvco_shift = 4, .kvco_mask = 0xF }, /* PLLA */
 586        { .m_shift = 0, .m_mask = 0x1F, .n_shift = 8, .n_mask = 0x3FF, .p_shift = 20, .p_mask = 0x01,
 587          .lock_ena = 22, .lock_det = 27, .kcp_shift = 8, .kcp_mask = 0xF, .kvco_shift = 4, .kvco_mask = 0xF }, /* PLLU */
 588        { .m_shift = 0, .m_mask = 0x1F, .n_shift = 8, .n_mask = 0x3FF, .p_shift = 20, .p_mask = 0x07,
 589          .lock_ena = 22, .lock_det = 27, .kcp_shift = 8, .kcp_mask = 0xF, .kvco_shift = 4, .kvco_mask = 0xF }, /* PLLD */
 590        { .m_shift = 0, .m_mask = 0xFF, .n_shift = 8, .n_mask = 0xFF,  .p_shift = 20, .p_mask = 0x0F,
 591          .lock_ena = 18, .lock_det = 27, .kcp_shift = 0, .kcp_mask = 0, .kvco_shift = 0, .kvco_mask = 0 },     /* PLLX */
 592        { .m_shift = 0, .m_mask = 0xFF, .n_shift = 8, .n_mask = 0xFF,  .p_shift = 0,  .p_mask = 0,
 593          .lock_ena = 9,  .lock_det = 11, .kcp_shift = 6, .kcp_mask = 3, .kvco_shift = 0, .kvco_mask = 1 },     /* PLLE */
 594        { .m_shift = 0, .m_mask = 0x0F, .n_shift = 8, .n_mask = 0x3FF, .p_shift = 20, .p_mask = 0x07,
 595          .lock_ena = 18, .lock_det = 27, .kcp_shift = 8, .kcp_mask = 0xF, .kvco_shift = 4, .kvco_mask = 0xF }, /* PLLS (RESERVED) */
 596        { .m_shift = 0, .m_mask = 0xFF, .n_shift = 8, .n_mask = 0xFF,  .p_shift = 20,  .p_mask = 0xF,
 597          .lock_ena = 30, .lock_det = 27, .kcp_shift = 25, .kcp_mask = 3, .kvco_shift = 24, .kvco_mask = 1 },   /* PLLDP */
 598};
 599
 600/*
 601 * Get the oscillator frequency, from the corresponding hardware configuration
 602 * field. Note that Tegra30+ support 3 new higher freqs, but we map back
 603 * to the old T20 freqs. Support for the higher oscillators is TBD.
 604 */
 605enum clock_osc_freq clock_get_osc_freq(void)
 606{
 607        struct clk_rst_ctlr *clkrst =
 608                        (struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE;
 609        u32 reg;
 610
 611        reg = readl(&clkrst->crc_osc_ctrl);
 612        reg = (reg & OSC_FREQ_MASK) >> OSC_FREQ_SHIFT;
 613
 614        if (reg & 1)                            /* one of the newer freqs */
 615                printf("Warning: OSC_FREQ is unsupported! (%d)\n", reg);
 616
 617        return reg >> 2;        /* Map to most common (T20) freqs */
 618}
 619
 620/* Returns a pointer to the clock source register for a peripheral */
 621u32 *get_periph_source_reg(enum periph_id periph_id)
 622{
 623        struct clk_rst_ctlr *clkrst =
 624                (struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE;
 625        enum periphc_internal_id internal_id;
 626
 627        /* Coresight is a special case */
 628        if (periph_id == PERIPH_ID_CSI)
 629                return &clkrst->crc_clk_src[PERIPH_ID_CSI+1];
 630
 631        assert(periph_id >= PERIPH_ID_FIRST && periph_id < PERIPH_ID_COUNT);
 632        internal_id = periph_id_to_internal_id[periph_id];
 633        assert(internal_id != -1);
 634        if (internal_id >= PERIPHC_X_FIRST) {
 635                internal_id -= PERIPHC_X_FIRST;
 636                return &clkrst->crc_clk_src_x[internal_id];
 637        } else if (internal_id >= PERIPHC_VW_FIRST) {
 638                internal_id -= PERIPHC_VW_FIRST;
 639                return &clkrst->crc_clk_src_vw[internal_id];
 640        } else {
 641                return &clkrst->crc_clk_src[internal_id];
 642        }
 643}
 644
 645int get_periph_clock_info(enum periph_id periph_id, int *mux_bits,
 646                          int *divider_bits, int *type)
 647{
 648        enum periphc_internal_id internal_id;
 649
 650        if (!clock_periph_id_isvalid(periph_id))
 651                return -1;
 652
 653        internal_id = periph_id_to_internal_id[periph_id];
 654        if (!periphc_internal_id_isvalid(internal_id))
 655                return -1;
 656
 657        *type = clock_periph_type[internal_id];
 658        if (!clock_type_id_isvalid(*type))
 659                return -1;
 660
 661        *mux_bits = clock_source[*type][CLOCK_MAX_MUX];
 662
 663        if (*type == CLOCK_TYPE_PC2CC3M_T16)
 664                *divider_bits = 16;
 665        else
 666                *divider_bits = 8;
 667
 668        return 0;
 669}
 670
 671enum clock_id get_periph_clock_id(enum periph_id periph_id, int source)
 672{
 673        enum periphc_internal_id internal_id;
 674        int type;
 675
 676        if (!clock_periph_id_isvalid(periph_id))
 677                return CLOCK_ID_NONE;
 678
 679        internal_id = periph_id_to_internal_id[periph_id];
 680        if (!periphc_internal_id_isvalid(internal_id))
 681                return CLOCK_ID_NONE;
 682
 683        type = clock_periph_type[internal_id];
 684        if (!clock_type_id_isvalid(type))
 685                return CLOCK_ID_NONE;
 686
 687        return clock_source[type][source];
 688}
 689
 690/**
 691 * Given a peripheral ID and the required source clock, this returns which
 692 * value should be programmed into the source mux for that peripheral.
 693 *
 694 * There is special code here to handle the one source type with 5 sources.
 695 *
 696 * @param periph_id     peripheral to start
 697 * @param source        PLL id of required parent clock
 698 * @param mux_bits      Set to number of bits in mux register: 2 or 4
 699 * @param divider_bits Set to number of divider bits (8 or 16)
 700 * @return mux value (0-4, or -1 if not found)
 701 */
 702int get_periph_clock_source(enum periph_id periph_id,
 703        enum clock_id parent, int *mux_bits, int *divider_bits)
 704{
 705        enum clock_type_id type;
 706        int mux, err;
 707
 708        err = get_periph_clock_info(periph_id, mux_bits, divider_bits, &type);
 709        assert(!err);
 710
 711        for (mux = 0; mux < CLOCK_MAX_MUX; mux++)
 712                if (clock_source[type][mux] == parent)
 713                        return mux;
 714
 715        /* if we get here, either us or the caller has made a mistake */
 716        printf("Caller requested bad clock: periph=%d, parent=%d\n", periph_id,
 717               parent);
 718        return -1;
 719}
 720
 721void clock_set_enable(enum periph_id periph_id, int enable)
 722{
 723        struct clk_rst_ctlr *clkrst =
 724                (struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE;
 725        u32 *clk;
 726        u32 reg;
 727
 728        /* Enable/disable the clock to this peripheral */
 729        assert(clock_periph_id_isvalid(periph_id));
 730        if ((int)periph_id < (int)PERIPH_ID_VW_FIRST)
 731                clk = &clkrst->crc_clk_out_enb[PERIPH_REG(periph_id)];
 732        else if ((int)periph_id < PERIPH_ID_X_FIRST)
 733                clk = &clkrst->crc_clk_out_enb_vw[PERIPH_REG(periph_id)];
 734        else
 735                clk = &clkrst->crc_clk_out_enb_x;
 736        reg = readl(clk);
 737        if (enable)
 738                reg |= PERIPH_MASK(periph_id);
 739        else
 740                reg &= ~PERIPH_MASK(periph_id);
 741        writel(reg, clk);
 742}
 743
 744void reset_set_enable(enum periph_id periph_id, int enable)
 745{
 746        struct clk_rst_ctlr *clkrst =
 747                (struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE;
 748        u32 *reset;
 749        u32 reg;
 750
 751        /* Enable/disable reset to the peripheral */
 752        assert(clock_periph_id_isvalid(periph_id));
 753        if (periph_id < PERIPH_ID_VW_FIRST)
 754                reset = &clkrst->crc_rst_dev[PERIPH_REG(periph_id)];
 755        else if ((int)periph_id < PERIPH_ID_X_FIRST)
 756                reset = &clkrst->crc_rst_dev_vw[PERIPH_REG(periph_id)];
 757        else
 758                reset = &clkrst->crc_rst_devices_x;
 759        reg = readl(reset);
 760        if (enable)
 761                reg |= PERIPH_MASK(periph_id);
 762        else
 763                reg &= ~PERIPH_MASK(periph_id);
 764        writel(reg, reset);
 765}
 766
 767#if CONFIG_IS_ENABLED(OF_CONTROL)
 768/*
 769 * Convert a device tree clock ID to our peripheral ID. They are mostly
 770 * the same but we are very cautious so we check that a valid clock ID is
 771 * provided.
 772 *
 773 * @param clk_id    Clock ID according to tegra124 device tree binding
 774 * @return peripheral ID, or PERIPH_ID_NONE if the clock ID is invalid
 775 */
 776enum periph_id clk_id_to_periph_id(int clk_id)
 777{
 778        if (clk_id > PERIPH_ID_COUNT)
 779                return PERIPH_ID_NONE;
 780
 781        switch (clk_id) {
 782        case PERIPH_ID_RESERVED4:
 783        case PERIPH_ID_RESERVED25:
 784        case PERIPH_ID_RESERVED35:
 785        case PERIPH_ID_RESERVED36:
 786        case PERIPH_ID_RESERVED38:
 787        case PERIPH_ID_RESERVED43:
 788        case PERIPH_ID_RESERVED49:
 789        case PERIPH_ID_RESERVED53:
 790        case PERIPH_ID_RESERVED64:
 791        case PERIPH_ID_RESERVED84:
 792        case PERIPH_ID_RESERVED85:
 793        case PERIPH_ID_RESERVED86:
 794        case PERIPH_ID_RESERVED88:
 795        case PERIPH_ID_RESERVED90:
 796        case PERIPH_ID_RESERVED92:
 797        case PERIPH_ID_RESERVED93:
 798        case PERIPH_ID_RESERVED94:
 799        case PERIPH_ID_V_RESERVED2:
 800        case PERIPH_ID_V_RESERVED4:
 801        case PERIPH_ID_V_RESERVED17:
 802        case PERIPH_ID_V_RESERVED18:
 803        case PERIPH_ID_V_RESERVED19:
 804        case PERIPH_ID_V_RESERVED20:
 805        case PERIPH_ID_V_RESERVED21:
 806        case PERIPH_ID_V_RESERVED22:
 807        case PERIPH_ID_W_RESERVED2:
 808        case PERIPH_ID_W_RESERVED3:
 809        case PERIPH_ID_W_RESERVED4:
 810        case PERIPH_ID_W_RESERVED5:
 811        case PERIPH_ID_W_RESERVED6:
 812        case PERIPH_ID_W_RESERVED7:
 813        case PERIPH_ID_W_RESERVED9:
 814        case PERIPH_ID_W_RESERVED10:
 815        case PERIPH_ID_W_RESERVED11:
 816        case PERIPH_ID_W_RESERVED12:
 817        case PERIPH_ID_W_RESERVED13:
 818        case PERIPH_ID_W_RESERVED15:
 819        case PERIPH_ID_W_RESERVED16:
 820        case PERIPH_ID_W_RESERVED17:
 821        case PERIPH_ID_W_RESERVED18:
 822        case PERIPH_ID_W_RESERVED19:
 823        case PERIPH_ID_W_RESERVED20:
 824        case PERIPH_ID_W_RESERVED23:
 825        case PERIPH_ID_W_RESERVED29:
 826        case PERIPH_ID_W_RESERVED30:
 827        case PERIPH_ID_W_RESERVED31:
 828                return PERIPH_ID_NONE;
 829        default:
 830                return clk_id;
 831        }
 832}
 833#endif /* CONFIG_IS_ENABLED(OF_CONTROL) */
 834
 835void clock_early_init(void)
 836{
 837        struct clk_rst_ctlr *clkrst =
 838                (struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE;
 839        struct clk_pll_info *pllinfo;
 840        u32 data;
 841
 842        tegra30_set_up_pllp();
 843
 844        /* clear IDDQ before accessing any other PLLC registers */
 845        pllinfo = &tegra_pll_info_table[CLOCK_ID_CGENERAL];
 846        clrbits_le32(&clkrst->crc_pll[CLOCK_ID_CGENERAL].pll_misc, PLLC_IDDQ);
 847        udelay(2);
 848
 849        /*
 850         * PLLC output frequency set to 600Mhz
 851         * PLLD output frequency set to 925Mhz
 852         */
 853        switch (clock_get_osc_freq()) {
 854        case CLOCK_OSC_FREQ_12_0: /* OSC is 12Mhz */
 855                clock_set_rate(CLOCK_ID_CGENERAL, 600, 12, 0, 8);
 856                clock_set_rate(CLOCK_ID_DISPLAY, 925, 12, 0, 12);
 857                break;
 858
 859        case CLOCK_OSC_FREQ_26_0: /* OSC is 26Mhz */
 860                clock_set_rate(CLOCK_ID_CGENERAL, 600, 26, 0, 8);
 861                clock_set_rate(CLOCK_ID_DISPLAY, 925, 26, 0, 12);
 862                break;
 863
 864        case CLOCK_OSC_FREQ_13_0: /* OSC is 13Mhz */
 865                clock_set_rate(CLOCK_ID_CGENERAL, 600, 13, 0, 8);
 866                clock_set_rate(CLOCK_ID_DISPLAY, 925, 13, 0, 12);
 867                break;
 868        case CLOCK_OSC_FREQ_19_2:
 869        default:
 870                /*
 871                 * These are not supported. It is too early to print a
 872                 * message and the UART likely won't work anyway due to the
 873                 * oscillator being wrong.
 874                 */
 875                break;
 876        }
 877
 878        /* PLLC_MISC2: Set dynramp_stepA/B. MISC2 maps to pll_out[1] */
 879        writel(0x00561600, &clkrst->crc_pll[CLOCK_ID_CGENERAL].pll_out[1]);
 880
 881        /* PLLC_MISC: Set LOCK_ENABLE */
 882        pllinfo = &tegra_pll_info_table[CLOCK_ID_CGENERAL];
 883        setbits_le32(&clkrst->crc_pll[CLOCK_ID_CGENERAL].pll_misc, (1 << pllinfo->lock_ena));
 884        udelay(2);
 885
 886        /* PLLD_MISC: Set CLKENABLE, CPCON 12, LFCON 1, and enable lock */
 887        pllinfo = &tegra_pll_info_table[CLOCK_ID_DISPLAY];
 888        data = (12 << pllinfo->kcp_shift) | (1 << pllinfo->kvco_shift);
 889        data |= (1 << PLLD_CLKENABLE) | (1 << pllinfo->lock_ena);
 890        writel(data, &clkrst->crc_pll[CLOCK_ID_DISPLAY].pll_misc);
 891        udelay(2);
 892}
 893
 894/*
 895 * clock_early_init_done - Check if clock_early_init() has been called
 896 *
 897 * Check a register that we set up to see if clock_early_init() has already
 898 * been called.
 899 *
 900 * @return true if clock_early_init() was called, false if not
 901 */
 902bool clock_early_init_done(void)
 903{
 904        struct clk_rst_ctlr *clkrst = (struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE;
 905        u32 val;
 906
 907        val = readl(&clkrst->crc_sclk_brst_pol);
 908
 909        return val == 0x20002222;
 910}
 911
 912void arch_timer_init(void)
 913{
 914        struct sysctr_ctlr *sysctr = (struct sysctr_ctlr *)NV_PA_TSC_BASE;
 915        u32 freq, val;
 916
 917        freq = clock_get_rate(CLOCK_ID_CLK_M);
 918        debug("%s: clk_m freq is %dHz [0x%08X]\n", __func__, freq, freq);
 919
 920        /* ARM CNTFRQ */
 921        asm("mcr p15, 0, %0, c14, c0, 0\n" : : "r" (freq));
 922
 923        /* Only Tegra114+ has the System Counter regs */
 924        debug("%s: setting CNTFID0 to 0x%08X\n", __func__, freq);
 925        writel(freq, &sysctr->cntfid0);
 926
 927        val = readl(&sysctr->cntcr);
 928        val |= TSC_CNTCR_ENABLE | TSC_CNTCR_HDBG;
 929        writel(val, &sysctr->cntcr);
 930        debug("%s: TSC CNTCR = 0x%08X\n", __func__, val);
 931}
 932
 933#define PLLE_SS_CNTL 0x68
 934#define  PLLE_SS_CNTL_SSCINCINTR(x) (((x) & 0x3f) << 24)
 935#define  PLLE_SS_CNTL_SSCINC(x) (((x) & 0xff) << 16)
 936#define  PLLE_SS_CNTL_SSCINVERT (1 << 15)
 937#define  PLLE_SS_CNTL_SSCCENTER (1 << 14)
 938#define  PLLE_SS_CNTL_SSCBYP (1 << 12)
 939#define  PLLE_SS_CNTL_INTERP_RESET (1 << 11)
 940#define  PLLE_SS_CNTL_BYPASS_SS (1 << 10)
 941#define  PLLE_SS_CNTL_SSCMAX(x) (((x) & 0x1ff) << 0)
 942
 943#define PLLE_BASE 0x0e8
 944#define  PLLE_BASE_ENABLE (1 << 30)
 945#define  PLLE_BASE_LOCK_OVERRIDE (1 << 29)
 946#define  PLLE_BASE_PLDIV_CML(x) (((x) & 0xf) << 24)
 947#define  PLLE_BASE_NDIV(x) (((x) & 0xff) << 8)
 948#define  PLLE_BASE_MDIV(x) (((x) & 0xff) << 0)
 949
 950#define PLLE_MISC 0x0ec
 951#define  PLLE_MISC_IDDQ_SWCTL (1 << 14)
 952#define  PLLE_MISC_IDDQ_OVERRIDE (1 << 13)
 953#define  PLLE_MISC_LOCK_ENABLE (1 << 9)
 954#define  PLLE_MISC_PTS (1 << 8)
 955#define  PLLE_MISC_VREG_BG_CTRL(x) (((x) & 0x3) << 4)
 956#define  PLLE_MISC_VREG_CTRL(x) (((x) & 0x3) << 2)
 957
 958#define PLLE_AUX 0x48c
 959#define  PLLE_AUX_SEQ_ENABLE (1 << 24)
 960#define  PLLE_AUX_ENABLE_SWCTL (1 << 4)
 961
 962int tegra_plle_enable(void)
 963{
 964        unsigned int m = 1, n = 200, cpcon = 13;
 965        u32 value;
 966
 967        value = readl(NV_PA_CLK_RST_BASE + PLLE_BASE);
 968        value &= ~PLLE_BASE_LOCK_OVERRIDE;
 969        writel(value, NV_PA_CLK_RST_BASE + PLLE_BASE);
 970
 971        value = readl(NV_PA_CLK_RST_BASE + PLLE_AUX);
 972        value |= PLLE_AUX_ENABLE_SWCTL;
 973        value &= ~PLLE_AUX_SEQ_ENABLE;
 974        writel(value, NV_PA_CLK_RST_BASE + PLLE_AUX);
 975
 976        udelay(1);
 977
 978        value = readl(NV_PA_CLK_RST_BASE + PLLE_MISC);
 979        value |= PLLE_MISC_IDDQ_SWCTL;
 980        value &= ~PLLE_MISC_IDDQ_OVERRIDE;
 981        value |= PLLE_MISC_LOCK_ENABLE;
 982        value |= PLLE_MISC_PTS;
 983        value |= PLLE_MISC_VREG_BG_CTRL(3);
 984        value |= PLLE_MISC_VREG_CTRL(2);
 985        writel(value, NV_PA_CLK_RST_BASE + PLLE_MISC);
 986
 987        udelay(5);
 988
 989        value = readl(NV_PA_CLK_RST_BASE + PLLE_SS_CNTL);
 990        value |= PLLE_SS_CNTL_SSCBYP | PLLE_SS_CNTL_INTERP_RESET |
 991                 PLLE_SS_CNTL_BYPASS_SS;
 992        writel(value, NV_PA_CLK_RST_BASE + PLLE_SS_CNTL);
 993
 994        value = readl(NV_PA_CLK_RST_BASE + PLLE_BASE);
 995        value &= ~PLLE_BASE_PLDIV_CML(0xf);
 996        value &= ~PLLE_BASE_NDIV(0xff);
 997        value &= ~PLLE_BASE_MDIV(0xff);
 998        value |= PLLE_BASE_PLDIV_CML(cpcon);
 999        value |= PLLE_BASE_NDIV(n);
1000        value |= PLLE_BASE_MDIV(m);
1001        writel(value, NV_PA_CLK_RST_BASE + PLLE_BASE);
1002
1003        udelay(1);
1004
1005        value = readl(NV_PA_CLK_RST_BASE + PLLE_BASE);
1006        value |= PLLE_BASE_ENABLE;
1007        writel(value, NV_PA_CLK_RST_BASE + PLLE_BASE);
1008
1009        /* wait for lock */
1010        udelay(300);
1011
1012        value = readl(NV_PA_CLK_RST_BASE + PLLE_SS_CNTL);
1013        value &= ~PLLE_SS_CNTL_SSCINVERT;
1014        value &= ~PLLE_SS_CNTL_SSCCENTER;
1015
1016        value &= ~PLLE_SS_CNTL_SSCINCINTR(0x3f);
1017        value &= ~PLLE_SS_CNTL_SSCINC(0xff);
1018        value &= ~PLLE_SS_CNTL_SSCMAX(0x1ff);
1019
1020        value |= PLLE_SS_CNTL_SSCINCINTR(0x20);
1021        value |= PLLE_SS_CNTL_SSCINC(0x01);
1022        value |= PLLE_SS_CNTL_SSCMAX(0x25);
1023
1024        writel(value, NV_PA_CLK_RST_BASE + PLLE_SS_CNTL);
1025
1026        value = readl(NV_PA_CLK_RST_BASE + PLLE_SS_CNTL);
1027        value &= ~PLLE_SS_CNTL_SSCBYP;
1028        value &= ~PLLE_SS_CNTL_BYPASS_SS;
1029        writel(value, NV_PA_CLK_RST_BASE + PLLE_SS_CNTL);
1030
1031        udelay(1);
1032
1033        value = readl(NV_PA_CLK_RST_BASE + PLLE_SS_CNTL);
1034        value &= ~PLLE_SS_CNTL_INTERP_RESET;
1035        writel(value, NV_PA_CLK_RST_BASE + PLLE_SS_CNTL);
1036
1037        udelay(1);
1038
1039        return 0;
1040}
1041
1042void clock_sor_enable_edp_clock(void)
1043{
1044        u32 *reg;
1045
1046        /* uses PLLP, has a non-standard bit layout. */
1047        reg = get_periph_source_reg(PERIPH_ID_SOR0);
1048        setbits_le32(reg, SOR0_CLK_SEL0);
1049}
1050
1051u32 clock_set_display_rate(u32 frequency)
1052{
1053        /**
1054         * plld (fo) = vco >> p, where 500MHz < vco < 1000MHz
1055         *           = (cf * n) >> p, where 1MHz < cf < 6MHz
1056         *           = ((ref / m) * n) >> p
1057         *
1058         * Iterate the possible values of p (3 bits, 2^7) to find out a minimum
1059         * safe vco, then find best (m, n). since m has only 5 bits, we can
1060         * iterate all possible values.  Note Tegra 124 supports 11 bits for n,
1061         * but our pll_fields has only 10 bits for n.
1062         *
1063         * Note values undershoot or overshoot target output frequency may not
1064         * work if the values are not in "safe" range by panel specification.
1065         */
1066        u32 ref = clock_get_rate(CLOCK_ID_OSC);
1067        u32 divm, divn, divp, cpcon;
1068        u32 cf, vco, rounded_rate = frequency;
1069        u32 diff, best_diff, best_m = 0, best_n = 0, best_p;
1070        const u32 max_m = 1 << 5, max_n = 1 << 10, max_p = 1 << 3,
1071                  mhz = 1000 * 1000, min_vco = 500 * mhz, max_vco = 1000 * mhz,
1072                  min_cf = 1 * mhz, max_cf = 6 * mhz;
1073        int mux_bits, divider_bits, source;
1074
1075        for (divp = 0, vco = frequency; vco < min_vco && divp < max_p; divp++)
1076                vco <<= 1;
1077
1078        if (vco < min_vco || vco > max_vco) {
1079                printf("%s: Cannot find out a supported VCO for Frequency (%u)\n",
1080                       __func__, frequency);
1081                return 0;
1082        }
1083
1084        best_p = divp;
1085        best_diff = vco;
1086
1087        for (divm = 1; divm < max_m && best_diff; divm++) {
1088                cf = ref / divm;
1089                if (cf < min_cf)
1090                        break;
1091                if (cf > max_cf)
1092                        continue;
1093
1094                divn = vco / cf;
1095                if (divn >= max_n)
1096                        continue;
1097
1098                diff = vco - divn * cf;
1099                if (divn + 1 < max_n && diff > cf / 2) {
1100                        divn++;
1101                        diff = cf - diff;
1102                }
1103
1104                if (diff >= best_diff)
1105                        continue;
1106
1107                best_diff = diff;
1108                best_m = divm;
1109                best_n = divn;
1110        }
1111
1112        if (best_n < 50)
1113                cpcon = 2;
1114        else if (best_n < 300)
1115                cpcon = 3;
1116        else if (best_n < 600)
1117                cpcon = 8;
1118        else
1119                cpcon = 12;
1120
1121        if (best_diff) {
1122                printf("%s: Failed to match output frequency %u, best difference is %u\n",
1123                       __func__, frequency, best_diff);
1124                rounded_rate = (ref / best_m * best_n) >> best_p;
1125        }
1126
1127        debug("%s: PLLD=%u ref=%u, m/n/p/cpcon=%u/%u/%u/%u\n",
1128              __func__, rounded_rate, ref, best_m, best_n, best_p, cpcon);
1129
1130        source = get_periph_clock_source(PERIPH_ID_DISP1, CLOCK_ID_DISPLAY,
1131                                         &mux_bits, &divider_bits);
1132        clock_ll_set_source_bits(PERIPH_ID_DISP1, mux_bits, source);
1133        clock_set_rate(CLOCK_ID_DISPLAY, best_n, best_m, best_p, cpcon);
1134
1135        return rounded_rate;
1136}
1137
1138void clock_set_up_plldp(void)
1139{
1140        struct clk_rst_ctlr *clkrst =
1141                        (struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE;
1142        u32 value;
1143
1144        value = PLLDP_SS_CFG_UNDOCUMENTED | PLLDP_SS_CFG_DITHER;
1145        writel(value | PLLDP_SS_CFG_CLAMP, &clkrst->crc_plldp_ss_cfg);
1146        clock_start_pll(CLOCK_ID_DP, 1, 90, 3, 0, 0);
1147        writel(value, &clkrst->crc_plldp_ss_cfg);
1148}
1149
1150struct clk_pll_simple *clock_get_simple_pll(enum clock_id clkid)
1151{
1152        struct clk_rst_ctlr *clkrst =
1153                        (struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE;
1154
1155        if (clkid == CLOCK_ID_DP)
1156                return &clkrst->plldp;
1157
1158        return NULL;
1159}
1160
1161struct periph_clk_init periph_clk_init_table[] = {
1162        { PERIPH_ID_SBC1, CLOCK_ID_PERIPH },
1163        { PERIPH_ID_SBC2, CLOCK_ID_PERIPH },
1164        { PERIPH_ID_SBC3, CLOCK_ID_PERIPH },
1165        { PERIPH_ID_SBC4, CLOCK_ID_PERIPH },
1166        { PERIPH_ID_SBC5, CLOCK_ID_PERIPH },
1167        { PERIPH_ID_SBC6, CLOCK_ID_PERIPH },
1168        { PERIPH_ID_HOST1X, CLOCK_ID_PERIPH },
1169        { PERIPH_ID_DISP1, CLOCK_ID_CGENERAL },
1170        { PERIPH_ID_SDMMC1, CLOCK_ID_PERIPH },
1171        { PERIPH_ID_SDMMC2, CLOCK_ID_PERIPH },
1172        { PERIPH_ID_SDMMC3, CLOCK_ID_PERIPH },
1173        { PERIPH_ID_SDMMC4, CLOCK_ID_PERIPH },
1174        { PERIPH_ID_PWM, CLOCK_ID_SFROM32KHZ },
1175        { PERIPH_ID_I2C1, CLOCK_ID_PERIPH },
1176        { PERIPH_ID_I2C2, CLOCK_ID_PERIPH },
1177        { PERIPH_ID_I2C3, CLOCK_ID_PERIPH },
1178        { PERIPH_ID_I2C4, CLOCK_ID_PERIPH },
1179        { PERIPH_ID_I2C5, CLOCK_ID_PERIPH },
1180        { PERIPH_ID_I2C6, CLOCK_ID_PERIPH },
1181        { -1, },
1182};
1183