linux/drivers/clk/bcm/clk-bcm281xx.c
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   1/*
   2 * Copyright (C) 2013 Broadcom Corporation
   3 * Copyright 2013 Linaro Limited
   4 *
   5 * This program is free software; you can redistribute it and/or
   6 * modify it under the terms of the GNU General Public License as
   7 * published by the Free Software Foundation version 2.
   8 *
   9 * This program is distributed "as is" WITHOUT ANY WARRANTY of any
  10 * kind, whether express or implied; without even the implied warranty
  11 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 * GNU General Public License for more details.
  13 */
  14
  15#include "clk-kona.h"
  16#include "dt-bindings/clock/bcm281xx.h"
  17
  18#define BCM281XX_CCU_COMMON(_name, _ucase_name) \
  19        KONA_CCU_COMMON(BCM281XX, _name, _ucase_name)
  20
  21/* Root CCU */
  22
  23static struct peri_clk_data frac_1m_data = {
  24        .gate           = HW_SW_GATE(0x214, 16, 0, 1),
  25        .trig           = TRIGGER(0x0e04, 0),
  26        .div            = FRAC_DIVIDER(0x0e00, 0, 22, 16),
  27        .clocks         = CLOCKS("ref_crystal"),
  28};
  29
  30static struct ccu_data root_ccu_data = {
  31        BCM281XX_CCU_COMMON(root, ROOT),
  32        .kona_clks      = {
  33                [BCM281XX_ROOT_CCU_FRAC_1M] =
  34                        KONA_CLK(root, frac_1m, peri),
  35                [BCM281XX_ROOT_CCU_CLOCK_COUNT] = LAST_KONA_CLK,
  36        },
  37};
  38
  39/* AON CCU */
  40
  41static struct peri_clk_data hub_timer_data = {
  42        .gate           = HW_SW_GATE(0x0414, 16, 0, 1),
  43        .clocks         = CLOCKS("bbl_32k",
  44                                 "frac_1m",
  45                                 "dft_19_5m"),
  46        .sel            = SELECTOR(0x0a10, 0, 2),
  47        .trig           = TRIGGER(0x0a40, 4),
  48};
  49
  50static struct peri_clk_data pmu_bsc_data = {
  51        .gate           = HW_SW_GATE(0x0418, 16, 0, 1),
  52        .clocks         = CLOCKS("ref_crystal",
  53                                 "pmu_bsc_var",
  54                                 "bbl_32k"),
  55        .sel            = SELECTOR(0x0a04, 0, 2),
  56        .div            = DIVIDER(0x0a04, 3, 4),
  57        .trig           = TRIGGER(0x0a40, 0),
  58};
  59
  60static struct peri_clk_data pmu_bsc_var_data = {
  61        .clocks         = CLOCKS("var_312m",
  62                                 "ref_312m"),
  63        .sel            = SELECTOR(0x0a00, 0, 2),
  64        .div            = DIVIDER(0x0a00, 4, 5),
  65        .trig           = TRIGGER(0x0a40, 2),
  66};
  67
  68static struct ccu_data aon_ccu_data = {
  69        BCM281XX_CCU_COMMON(aon, AON),
  70        .kona_clks      = {
  71                [BCM281XX_AON_CCU_HUB_TIMER] =
  72                        KONA_CLK(aon, hub_timer, peri),
  73                [BCM281XX_AON_CCU_PMU_BSC] =
  74                        KONA_CLK(aon, pmu_bsc, peri),
  75                [BCM281XX_AON_CCU_PMU_BSC_VAR] =
  76                        KONA_CLK(aon, pmu_bsc_var, peri),
  77                [BCM281XX_AON_CCU_CLOCK_COUNT] = LAST_KONA_CLK,
  78        },
  79};
  80
  81/* Hub CCU */
  82
  83static struct peri_clk_data tmon_1m_data = {
  84        .gate           = HW_SW_GATE(0x04a4, 18, 2, 3),
  85        .clocks         = CLOCKS("ref_crystal",
  86                                 "frac_1m"),
  87        .sel            = SELECTOR(0x0e74, 0, 2),
  88        .trig           = TRIGGER(0x0e84, 1),
  89};
  90
  91static struct ccu_data hub_ccu_data = {
  92        BCM281XX_CCU_COMMON(hub, HUB),
  93        .kona_clks      = {
  94                [BCM281XX_HUB_CCU_TMON_1M] =
  95                        KONA_CLK(hub, tmon_1m, peri),
  96                [BCM281XX_HUB_CCU_CLOCK_COUNT] = LAST_KONA_CLK,
  97        },
  98};
  99
 100/* Master CCU */
 101
 102static struct peri_clk_data sdio1_data = {
 103        .gate           = HW_SW_GATE(0x0358, 18, 2, 3),
 104        .clocks         = CLOCKS("ref_crystal",
 105                                 "var_52m",
 106                                 "ref_52m",
 107                                 "var_96m",
 108                                 "ref_96m"),
 109        .sel            = SELECTOR(0x0a28, 0, 3),
 110        .div            = DIVIDER(0x0a28, 4, 14),
 111        .trig           = TRIGGER(0x0afc, 9),
 112};
 113
 114static struct peri_clk_data sdio2_data = {
 115        .gate           = HW_SW_GATE(0x035c, 18, 2, 3),
 116        .clocks         = CLOCKS("ref_crystal",
 117                                 "var_52m",
 118                                 "ref_52m",
 119                                 "var_96m",
 120                                 "ref_96m"),
 121        .sel            = SELECTOR(0x0a2c, 0, 3),
 122        .div            = DIVIDER(0x0a2c, 4, 14),
 123        .trig           = TRIGGER(0x0afc, 10),
 124};
 125
 126static struct peri_clk_data sdio3_data = {
 127        .gate           = HW_SW_GATE(0x0364, 18, 2, 3),
 128        .clocks         = CLOCKS("ref_crystal",
 129                                 "var_52m",
 130                                 "ref_52m",
 131                                 "var_96m",
 132                                 "ref_96m"),
 133        .sel            = SELECTOR(0x0a34, 0, 3),
 134        .div            = DIVIDER(0x0a34, 4, 14),
 135        .trig           = TRIGGER(0x0afc, 12),
 136};
 137
 138static struct peri_clk_data sdio4_data = {
 139        .gate           = HW_SW_GATE(0x0360, 18, 2, 3),
 140        .clocks         = CLOCKS("ref_crystal",
 141                                 "var_52m",
 142                                 "ref_52m",
 143                                 "var_96m",
 144                                 "ref_96m"),
 145        .sel            = SELECTOR(0x0a30, 0, 3),
 146        .div            = DIVIDER(0x0a30, 4, 14),
 147        .trig           = TRIGGER(0x0afc, 11),
 148};
 149
 150static struct peri_clk_data usb_ic_data = {
 151        .gate           = HW_SW_GATE(0x0354, 18, 2, 3),
 152        .clocks         = CLOCKS("ref_crystal",
 153                                 "var_96m",
 154                                 "ref_96m"),
 155        .div            = FIXED_DIVIDER(2),
 156        .sel            = SELECTOR(0x0a24, 0, 2),
 157        .trig           = TRIGGER(0x0afc, 7),
 158};
 159
 160/* also called usbh_48m */
 161static struct peri_clk_data hsic2_48m_data = {
 162        .gate           = HW_SW_GATE(0x0370, 18, 2, 3),
 163        .clocks         = CLOCKS("ref_crystal",
 164                                 "var_96m",
 165                                 "ref_96m"),
 166        .sel            = SELECTOR(0x0a38, 0, 2),
 167        .div            = FIXED_DIVIDER(2),
 168        .trig           = TRIGGER(0x0afc, 5),
 169};
 170
 171/* also called usbh_12m */
 172static struct peri_clk_data hsic2_12m_data = {
 173        .gate           = HW_SW_GATE(0x0370, 20, 4, 5),
 174        .div            = DIVIDER(0x0a38, 12, 2),
 175        .clocks         = CLOCKS("ref_crystal",
 176                                 "var_96m",
 177                                 "ref_96m"),
 178        .pre_div        = FIXED_DIVIDER(2),
 179        .sel            = SELECTOR(0x0a38, 0, 2),
 180        .trig           = TRIGGER(0x0afc, 5),
 181};
 182
 183static struct ccu_data master_ccu_data = {
 184        BCM281XX_CCU_COMMON(master, MASTER),
 185        .kona_clks      = {
 186                [BCM281XX_MASTER_CCU_SDIO1] =
 187                        KONA_CLK(master, sdio1, peri),
 188                [BCM281XX_MASTER_CCU_SDIO2] =
 189                        KONA_CLK(master, sdio2, peri),
 190                [BCM281XX_MASTER_CCU_SDIO3] =
 191                        KONA_CLK(master, sdio3, peri),
 192                [BCM281XX_MASTER_CCU_SDIO4] =
 193                        KONA_CLK(master, sdio4, peri),
 194                [BCM281XX_MASTER_CCU_USB_IC] =
 195                        KONA_CLK(master, usb_ic, peri),
 196                [BCM281XX_MASTER_CCU_HSIC2_48M] =
 197                        KONA_CLK(master, hsic2_48m, peri),
 198                [BCM281XX_MASTER_CCU_HSIC2_12M] =
 199                        KONA_CLK(master, hsic2_12m, peri),
 200                [BCM281XX_MASTER_CCU_CLOCK_COUNT] = LAST_KONA_CLK,
 201        },
 202};
 203
 204/* Slave CCU */
 205
 206static struct peri_clk_data uartb_data = {
 207        .gate           = HW_SW_GATE(0x0400, 18, 2, 3),
 208        .clocks         = CLOCKS("ref_crystal",
 209                                 "var_156m",
 210                                 "ref_156m"),
 211        .sel            = SELECTOR(0x0a10, 0, 2),
 212        .div            = FRAC_DIVIDER(0x0a10, 4, 12, 8),
 213        .trig           = TRIGGER(0x0afc, 2),
 214};
 215
 216static struct peri_clk_data uartb2_data = {
 217        .gate           = HW_SW_GATE(0x0404, 18, 2, 3),
 218        .clocks         = CLOCKS("ref_crystal",
 219                                 "var_156m",
 220                                 "ref_156m"),
 221        .sel            = SELECTOR(0x0a14, 0, 2),
 222        .div            = FRAC_DIVIDER(0x0a14, 4, 12, 8),
 223        .trig           = TRIGGER(0x0afc, 3),
 224};
 225
 226static struct peri_clk_data uartb3_data = {
 227        .gate           = HW_SW_GATE(0x0408, 18, 2, 3),
 228        .clocks         = CLOCKS("ref_crystal",
 229                                 "var_156m",
 230                                 "ref_156m"),
 231        .sel            = SELECTOR(0x0a18, 0, 2),
 232        .div            = FRAC_DIVIDER(0x0a18, 4, 12, 8),
 233        .trig           = TRIGGER(0x0afc, 4),
 234};
 235
 236static struct peri_clk_data uartb4_data = {
 237        .gate           = HW_SW_GATE(0x0408, 18, 2, 3),
 238        .clocks         = CLOCKS("ref_crystal",
 239                                 "var_156m",
 240                                 "ref_156m"),
 241        .sel            = SELECTOR(0x0a1c, 0, 2),
 242        .div            = FRAC_DIVIDER(0x0a1c, 4, 12, 8),
 243        .trig           = TRIGGER(0x0afc, 5),
 244};
 245
 246static struct peri_clk_data ssp0_data = {
 247        .gate           = HW_SW_GATE(0x0410, 18, 2, 3),
 248        .clocks         = CLOCKS("ref_crystal",
 249                                 "var_104m",
 250                                 "ref_104m",
 251                                 "var_96m",
 252                                 "ref_96m"),
 253        .sel            = SELECTOR(0x0a20, 0, 3),
 254        .div            = DIVIDER(0x0a20, 4, 14),
 255        .trig           = TRIGGER(0x0afc, 6),
 256};
 257
 258static struct peri_clk_data ssp2_data = {
 259        .gate           = HW_SW_GATE(0x0418, 18, 2, 3),
 260        .clocks         = CLOCKS("ref_crystal",
 261                                 "var_104m",
 262                                 "ref_104m",
 263                                 "var_96m",
 264                                 "ref_96m"),
 265        .sel            = SELECTOR(0x0a28, 0, 3),
 266        .div            = DIVIDER(0x0a28, 4, 14),
 267        .trig           = TRIGGER(0x0afc, 8),
 268};
 269
 270static struct peri_clk_data bsc1_data = {
 271        .gate           = HW_SW_GATE(0x0458, 18, 2, 3),
 272        .clocks         = CLOCKS("ref_crystal",
 273                                 "var_104m",
 274                                 "ref_104m",
 275                                 "var_13m",
 276                                 "ref_13m"),
 277        .sel            = SELECTOR(0x0a64, 0, 3),
 278        .trig           = TRIGGER(0x0afc, 23),
 279};
 280
 281static struct peri_clk_data bsc2_data = {
 282        .gate           = HW_SW_GATE(0x045c, 18, 2, 3),
 283        .clocks = CLOCKS("ref_crystal",
 284                                 "var_104m",
 285                                 "ref_104m",
 286                                 "var_13m",
 287                                 "ref_13m"),
 288        .sel            = SELECTOR(0x0a68, 0, 3),
 289        .trig           = TRIGGER(0x0afc, 24),
 290};
 291
 292static struct peri_clk_data bsc3_data = {
 293        .gate           = HW_SW_GATE(0x0484, 18, 2, 3),
 294        .clocks         = CLOCKS("ref_crystal",
 295                                 "var_104m",
 296                                 "ref_104m",
 297                                 "var_13m",
 298                                 "ref_13m"),
 299        .sel            = SELECTOR(0x0a84, 0, 3),
 300        .trig           = TRIGGER(0x0b00, 2),
 301};
 302
 303static struct peri_clk_data pwm_data = {
 304        .gate           = HW_SW_GATE(0x0468, 18, 2, 3),
 305        .clocks         = CLOCKS("ref_crystal",
 306                                 "var_104m"),
 307        .sel            = SELECTOR(0x0a70, 0, 2),
 308        .div            = DIVIDER(0x0a70, 4, 3),
 309        .trig           = TRIGGER(0x0afc, 15),
 310};
 311
 312static struct ccu_data slave_ccu_data = {
 313        BCM281XX_CCU_COMMON(slave, SLAVE),
 314        .kona_clks      = {
 315                [BCM281XX_SLAVE_CCU_UARTB] =
 316                        KONA_CLK(slave, uartb, peri),
 317                [BCM281XX_SLAVE_CCU_UARTB2] =
 318                        KONA_CLK(slave, uartb2, peri),
 319                [BCM281XX_SLAVE_CCU_UARTB3] =
 320                        KONA_CLK(slave, uartb3, peri),
 321                [BCM281XX_SLAVE_CCU_UARTB4] =
 322                        KONA_CLK(slave, uartb4, peri),
 323                [BCM281XX_SLAVE_CCU_SSP0] =
 324                        KONA_CLK(slave, ssp0, peri),
 325                [BCM281XX_SLAVE_CCU_SSP2] =
 326                        KONA_CLK(slave, ssp2, peri),
 327                [BCM281XX_SLAVE_CCU_BSC1] =
 328                        KONA_CLK(slave, bsc1, peri),
 329                [BCM281XX_SLAVE_CCU_BSC2] =
 330                        KONA_CLK(slave, bsc2, peri),
 331                [BCM281XX_SLAVE_CCU_BSC3] =
 332                        KONA_CLK(slave, bsc3, peri),
 333                [BCM281XX_SLAVE_CCU_PWM] =
 334                        KONA_CLK(slave, pwm, peri),
 335                [BCM281XX_SLAVE_CCU_CLOCK_COUNT] = LAST_KONA_CLK,
 336        },
 337};
 338
 339/* Device tree match table callback functions */
 340
 341static void __init kona_dt_root_ccu_setup(struct device_node *node)
 342{
 343        kona_dt_ccu_setup(&root_ccu_data, node);
 344}
 345
 346static void __init kona_dt_aon_ccu_setup(struct device_node *node)
 347{
 348        kona_dt_ccu_setup(&aon_ccu_data, node);
 349}
 350
 351static void __init kona_dt_hub_ccu_setup(struct device_node *node)
 352{
 353        kona_dt_ccu_setup(&hub_ccu_data, node);
 354}
 355
 356static void __init kona_dt_master_ccu_setup(struct device_node *node)
 357{
 358        kona_dt_ccu_setup(&master_ccu_data, node);
 359}
 360
 361static void __init kona_dt_slave_ccu_setup(struct device_node *node)
 362{
 363        kona_dt_ccu_setup(&slave_ccu_data, node);
 364}
 365
 366CLK_OF_DECLARE(bcm281xx_root_ccu, BCM281XX_DT_ROOT_CCU_COMPAT,
 367                        kona_dt_root_ccu_setup);
 368CLK_OF_DECLARE(bcm281xx_aon_ccu, BCM281XX_DT_AON_CCU_COMPAT,
 369                        kona_dt_aon_ccu_setup);
 370CLK_OF_DECLARE(bcm281xx_hub_ccu, BCM281XX_DT_HUB_CCU_COMPAT,
 371                        kona_dt_hub_ccu_setup);
 372CLK_OF_DECLARE(bcm281xx_master_ccu, BCM281XX_DT_MASTER_CCU_COMPAT,
 373                        kona_dt_master_ccu_setup);
 374CLK_OF_DECLARE(bcm281xx_slave_ccu, BCM281XX_DT_SLAVE_CCU_COMPAT,
 375                        kona_dt_slave_ccu_setup);
 376