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