drivers/clk/ti/clk-44xx.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * OMAP4 Clock init
   4  *
   5  * Copyright (C) 2013 Texas Instruments, Inc.
   6  *
   7  * Tero Kristo ([email protected])
   8  */
   9
  10 #include <linux/kernel.h>
  11 #include <linux/list.h>
  12 #include <linux/clk.h>
  13 #include <linux/clkdev.h>
  14 #include <linux/clk/ti.h>
  15 #include <dt-bindings/clock/omap4.h>
  16
  17 #include "clock.h"
  18
  19 /*
  20  * OMAP4 ABE DPLL default frequency. In OMAP4460 TRM version V, section
  21  * "3.6.3.2.3 CM1_ABE Clock Generator" states that the "DPLL_ABE_X2_CLK
  22  * must be set to 196.608 MHz" and hence, the DPLL locked frequency is
  23  * half of this value.
  24  */
  25 #define OMAP4_DPLL_ABE_DEFFREQ                          98304000
  26
  27 /*
  28  * OMAP4 USB DPLL default frequency. In OMAP4430 TRM version V, section
  29  * "3.6.3.9.5 DPLL_USB Preferred Settings" shows that the preferred
  30  * locked frequency for the USB DPLL is 960MHz.
  31  */
  32 #define OMAP4_DPLL_USB_DEFFREQ                          960000000
  33
  34 static const struct omap_clkctrl_reg_data omap4_mpuss_clkctrl_regs[] __initconst = {
  35         { OMAP4_MPU_CLKCTRL, NULL, 0, "dpll_mpu_m2_ck" },
  36         { 0 },
  37 };
  38
  39 static const struct omap_clkctrl_reg_data omap4_tesla_clkctrl_regs[] __initconst = {
  40         { OMAP4_DSP_CLKCTRL, NULL, CLKF_HW_SUP | CLKF_NO_IDLEST, "dpll_iva_m4x2_ck" },
  41         { 0 },
  42 };
  43
  44 static const char * const omap4_aess_fclk_parents[] __initconst = {
  45         "abe_clk",
  46         NULL,
  47 };
  48
  49 static const struct omap_clkctrl_div_data omap4_aess_fclk_data __initconst = {
  50         .max_div = 2,
  51 };
  52
  53 static const struct omap_clkctrl_bit_data omap4_aess_bit_data[] __initconst = {
  54         { 24, TI_CLK_DIVIDER, omap4_aess_fclk_parents, &omap4_aess_fclk_data },
  55         { 0 },
  56 };
  57
  58 static const char * const omap4_func_dmic_abe_gfclk_parents[] __initconst = {
  59         "abe-clkctrl:0018:26",
  60         "pad_clks_ck",
  61         "slimbus_clk",
  62         NULL,
  63 };
  64
  65 static const char * const omap4_dmic_sync_mux_ck_parents[] __initconst = {
  66         "abe_24m_fclk",
  67         "syc_clk_div_ck",
  68         "func_24m_clk",
  69         NULL,
  70 };
  71
  72 static const struct omap_clkctrl_bit_data omap4_dmic_bit_data[] __initconst = {
  73         { 24, TI_CLK_MUX, omap4_func_dmic_abe_gfclk_parents, NULL },
  74         { 26, TI_CLK_MUX, omap4_dmic_sync_mux_ck_parents, NULL },
  75         { 0 },
  76 };
  77
  78 static const char * const omap4_func_mcasp_abe_gfclk_parents[] __initconst = {
  79         "abe-clkctrl:0020:26",
  80         "pad_clks_ck",
  81         "slimbus_clk",
  82         NULL,
  83 };
  84
  85 static const struct omap_clkctrl_bit_data omap4_mcasp_bit_data[] __initconst = {
  86         { 24, TI_CLK_MUX, omap4_func_mcasp_abe_gfclk_parents, NULL },
  87         { 26, TI_CLK_MUX, omap4_dmic_sync_mux_ck_parents, NULL },
  88         { 0 },
  89 };
  90
  91 static const char * const omap4_func_mcbsp1_gfclk_parents[] __initconst = {
  92         "abe-clkctrl:0028:26",
  93         "pad_clks_ck",
  94         "slimbus_clk",
  95         NULL,
  96 };
  97
  98 static const struct omap_clkctrl_bit_data omap4_mcbsp1_bit_data[] __initconst = {
  99         { 24, TI_CLK_MUX, omap4_func_mcbsp1_gfclk_parents, NULL },
 100         { 26, TI_CLK_MUX, omap4_dmic_sync_mux_ck_parents, NULL },
 101         { 0 },
 102 };
 103
 104 static const char * const omap4_func_mcbsp2_gfclk_parents[] __initconst = {
 105         "abe-clkctrl:0030:26",
 106         "pad_clks_ck",
 107         "slimbus_clk",
 108         NULL,
 109 };
 110
 111 static const struct omap_clkctrl_bit_data omap4_mcbsp2_bit_data[] __initconst = {
 112         { 24, TI_CLK_MUX, omap4_func_mcbsp2_gfclk_parents, NULL },
 113         { 26, TI_CLK_MUX, omap4_dmic_sync_mux_ck_parents, NULL },
 114         { 0 },
 115 };
 116
 117 static const char * const omap4_func_mcbsp3_gfclk_parents[] __initconst = {
 118         "abe-clkctrl:0038:26",
 119         "pad_clks_ck",
 120         "slimbus_clk",
 121         NULL,
 122 };
 123
 124 static const struct omap_clkctrl_bit_data omap4_mcbsp3_bit_data[] __initconst = {
 125         { 24, TI_CLK_MUX, omap4_func_mcbsp3_gfclk_parents, NULL },
 126         { 26, TI_CLK_MUX, omap4_dmic_sync_mux_ck_parents, NULL },
 127         { 0 },
 128 };
 129
 130 static const char * const omap4_slimbus1_fclk_0_parents[] __initconst = {
 131         "abe_24m_fclk",
 132         NULL,
 133 };
 134
 135 static const char * const omap4_slimbus1_fclk_1_parents[] __initconst = {
 136         "func_24m_clk",
 137         NULL,
 138 };
 139
 140 static const char * const omap4_slimbus1_fclk_2_parents[] __initconst = {
 141         "pad_clks_ck",
 142         NULL,
 143 };
 144
 145 static const char * const omap4_slimbus1_slimbus_clk_parents[] __initconst = {
 146         "slimbus_clk",
 147         NULL,
 148 };
 149
 150 static const struct omap_clkctrl_bit_data omap4_slimbus1_bit_data[] __initconst = {
 151         { 8, TI_CLK_GATE, omap4_slimbus1_fclk_0_parents, NULL },
 152         { 9, TI_CLK_GATE, omap4_slimbus1_fclk_1_parents, NULL },
 153         { 10, TI_CLK_GATE, omap4_slimbus1_fclk_2_parents, NULL },
 154         { 11, TI_CLK_GATE, omap4_slimbus1_slimbus_clk_parents, NULL },
 155         { 0 },
 156 };
 157
 158 static const char * const omap4_timer5_sync_mux_parents[] __initconst = {
 159         "syc_clk_div_ck",
 160         "sys_32k_ck",
 161         NULL,
 162 };
 163
 164 static const struct omap_clkctrl_bit_data omap4_timer5_bit_data[] __initconst = {
 165         { 24, TI_CLK_MUX, omap4_timer5_sync_mux_parents, NULL },
 166         { 0 },
 167 };
 168
 169 static const struct omap_clkctrl_bit_data omap4_timer6_bit_data[] __initconst = {
 170         { 24, TI_CLK_MUX, omap4_timer5_sync_mux_parents, NULL },
 171         { 0 },
 172 };
 173
 174 static const struct omap_clkctrl_bit_data omap4_timer7_bit_data[] __initconst = {
 175         { 24, TI_CLK_MUX, omap4_timer5_sync_mux_parents, NULL },
 176         { 0 },
 177 };
 178
 179 static const struct omap_clkctrl_bit_data omap4_timer8_bit_data[] __initconst = {
 180         { 24, TI_CLK_MUX, omap4_timer5_sync_mux_parents, NULL },
 181         { 0 },
 182 };
 183
 184 static const struct omap_clkctrl_reg_data omap4_abe_clkctrl_regs[] __initconst = {
 185         { OMAP4_L4_ABE_CLKCTRL, NULL, 0, "ocp_abe_iclk" },
 186         { OMAP4_AESS_CLKCTRL, omap4_aess_bit_data, CLKF_SW_SUP, "abe-clkctrl:0008:24" },
 187         { OMAP4_MCPDM_CLKCTRL, NULL, CLKF_SW_SUP, "pad_clks_ck" },
 188         { OMAP4_DMIC_CLKCTRL, omap4_dmic_bit_data, CLKF_SW_SUP, "abe-clkctrl:0018:24" },
 189         { OMAP4_MCASP_CLKCTRL, omap4_mcasp_bit_data, CLKF_SW_SUP, "abe-clkctrl:0020:24" },
 190         { OMAP4_MCBSP1_CLKCTRL, omap4_mcbsp1_bit_data, CLKF_SW_SUP, "abe-clkctrl:0028:24" },
 191         { OMAP4_MCBSP2_CLKCTRL, omap4_mcbsp2_bit_data, CLKF_SW_SUP, "abe-clkctrl:0030:24" },
 192         { OMAP4_MCBSP3_CLKCTRL, omap4_mcbsp3_bit_data, CLKF_SW_SUP, "abe-clkctrl:0038:24" },
 193         { OMAP4_SLIMBUS1_CLKCTRL, omap4_slimbus1_bit_data, CLKF_SW_SUP, "abe-clkctrl:0040:8" },
 194         { OMAP4_TIMER5_CLKCTRL, omap4_timer5_bit_data, CLKF_SW_SUP, "abe-clkctrl:0048:24" },
 195         { OMAP4_TIMER6_CLKCTRL, omap4_timer6_bit_data, CLKF_SW_SUP, "abe-clkctrl:0050:24" },
 196         { OMAP4_TIMER7_CLKCTRL, omap4_timer7_bit_data, CLKF_SW_SUP, "abe-clkctrl:0058:24" },
 197         { OMAP4_TIMER8_CLKCTRL, omap4_timer8_bit_data, CLKF_SW_SUP, "abe-clkctrl:0060:24" },
 198         { OMAP4_WD_TIMER3_CLKCTRL, NULL, CLKF_SW_SUP, "sys_32k_ck" },
 199         { 0 },
 200 };
 201
 202 static const struct omap_clkctrl_reg_data omap4_l4_ao_clkctrl_regs[] __initconst = {
 203         { OMAP4_SMARTREFLEX_MPU_CLKCTRL, NULL, CLKF_SW_SUP, "l4_wkup_clk_mux_ck" },
 204         { OMAP4_SMARTREFLEX_IVA_CLKCTRL, NULL, CLKF_SW_SUP, "l4_wkup_clk_mux_ck" },
 205         { OMAP4_SMARTREFLEX_CORE_CLKCTRL, NULL, CLKF_SW_SUP, "l4_wkup_clk_mux_ck" },
 206         { 0 },
 207 };
 208
 209 static const struct omap_clkctrl_reg_data omap4_l3_1_clkctrl_regs[] __initconst = {
 210         { OMAP4_L3_MAIN_1_CLKCTRL, NULL, 0, "l3_div_ck" },
 211         { 0 },
 212 };
 213
 214 static const struct omap_clkctrl_reg_data omap4_l3_2_clkctrl_regs[] __initconst = {
 215         { OMAP4_L3_MAIN_2_CLKCTRL, NULL, 0, "l3_div_ck" },
 216         { OMAP4_GPMC_CLKCTRL, NULL, CLKF_HW_SUP, "l3_div_ck" },
 217         { OMAP4_OCMC_RAM_CLKCTRL, NULL, 0, "l3_div_ck" },
 218         { 0 },
 219 };
 220
 221 static const struct omap_clkctrl_reg_data omap4_ducati_clkctrl_regs[] __initconst = {
 222         { OMAP4_IPU_CLKCTRL, NULL, CLKF_HW_SUP | CLKF_NO_IDLEST, "ducati_clk_mux_ck" },
 223         { 0 },
 224 };
 225
 226 static const struct omap_clkctrl_reg_data omap4_l3_dma_clkctrl_regs[] __initconst = {
 227         { OMAP4_DMA_SYSTEM_CLKCTRL, NULL, 0, "l3_div_ck" },
 228         { 0 },
 229 };
 230
 231 static const struct omap_clkctrl_reg_data omap4_l3_emif_clkctrl_regs[] __initconst = {
 232         { OMAP4_DMM_CLKCTRL, NULL, 0, "l3_div_ck" },
 233         { OMAP4_EMIF1_CLKCTRL, NULL, CLKF_HW_SUP, "ddrphy_ck" },
 234         { OMAP4_EMIF2_CLKCTRL, NULL, CLKF_HW_SUP, "ddrphy_ck" },
 235         { 0 },
 236 };
 237
 238 static const struct omap_clkctrl_reg_data omap4_d2d_clkctrl_regs[] __initconst = {
 239         { OMAP4_C2C_CLKCTRL, NULL, 0, "div_core_ck" },
 240         { 0 },
 241 };
 242
 243 static const struct omap_clkctrl_reg_data omap4_l4_cfg_clkctrl_regs[] __initconst = {
 244         { OMAP4_L4_CFG_CLKCTRL, NULL, 0, "l4_div_ck" },
 245         { OMAP4_SPINLOCK_CLKCTRL, NULL, 0, "l4_div_ck" },
 246         { OMAP4_MAILBOX_CLKCTRL, NULL, 0, "l4_div_ck" },
 247         { 0 },
 248 };
 249
 250 static const struct omap_clkctrl_reg_data omap4_l3_instr_clkctrl_regs[] __initconst = {
 251         { OMAP4_L3_MAIN_3_CLKCTRL, NULL, CLKF_HW_SUP, "l3_div_ck" },
 252         { OMAP4_L3_INSTR_CLKCTRL, NULL, CLKF_HW_SUP, "l3_div_ck" },
 253         { OMAP4_OCP_WP_NOC_CLKCTRL, NULL, CLKF_HW_SUP, "l3_div_ck" },
 254         { 0 },
 255 };
 256
 257 static const struct omap_clkctrl_reg_data omap4_ivahd_clkctrl_regs[] __initconst = {
 258         { OMAP4_IVA_CLKCTRL, NULL, CLKF_HW_SUP | CLKF_NO_IDLEST, "dpll_iva_m5x2_ck" },
 259         { OMAP4_SL2IF_CLKCTRL, NULL, CLKF_HW_SUP, "dpll_iva_m5x2_ck" },
 260         { 0 },
 261 };
 262
 263 static const char * const omap4_iss_ctrlclk_parents[] __initconst = {
 264         "func_96m_fclk",
 265         NULL,
 266 };
 267
 268 static const struct omap_clkctrl_bit_data omap4_iss_bit_data[] __initconst = {
 269         { 8, TI_CLK_GATE, omap4_iss_ctrlclk_parents, NULL },
 270         { 0 },
 271 };
 272
 273 static const char * const omap4_fdif_fck_parents[] __initconst = {
 274         "dpll_per_m4x2_ck",
 275         NULL,
 276 };
 277
 278 static const struct omap_clkctrl_div_data omap4_fdif_fck_data __initconst = {
 279         .max_div = 4,
 280         .flags = CLK_DIVIDER_POWER_OF_TWO,
 281 };
 282
 283 static const struct omap_clkctrl_bit_data omap4_fdif_bit_data[] __initconst = {
 284         { 24, TI_CLK_DIVIDER, omap4_fdif_fck_parents, &omap4_fdif_fck_data },
 285         { 0 },
 286 };
 287
 288 static const struct omap_clkctrl_reg_data omap4_iss_clkctrl_regs[] __initconst = {
 289         { OMAP4_ISS_CLKCTRL, omap4_iss_bit_data, CLKF_SW_SUP, "ducati_clk_mux_ck" },
 290         { OMAP4_FDIF_CLKCTRL, omap4_fdif_bit_data, CLKF_SW_SUP, "iss-clkctrl:0008:24" },
 291         { 0 },
 292 };
 293
 294 static const char * const omap4_dss_dss_clk_parents[] __initconst = {
 295         "dpll_per_m5x2_ck",
 296         NULL,
 297 };
 298
 299 static const char * const omap4_dss_48mhz_clk_parents[] __initconst = {
 300         "func_48mc_fclk",
 301         NULL,
 302 };
 303
 304 static const char * const omap4_dss_sys_clk_parents[] __initconst = {
 305         "syc_clk_div_ck",
 306         NULL,
 307 };
 308
 309 static const char * const omap4_dss_tv_clk_parents[] __initconst = {
 310         "extalt_clkin_ck",
 311         NULL,
 312 };
 313
 314 static const struct omap_clkctrl_bit_data omap4_dss_core_bit_data[] __initconst = {
 315         { 8, TI_CLK_GATE, omap4_dss_dss_clk_parents, NULL },
 316         { 9, TI_CLK_GATE, omap4_dss_48mhz_clk_parents, NULL },
 317         { 10, TI_CLK_GATE, omap4_dss_sys_clk_parents, NULL },
 318         { 11, TI_CLK_GATE, omap4_dss_tv_clk_parents, NULL },
 319         { 0 },
 320 };
 321
 322 static const struct omap_clkctrl_reg_data omap4_l3_dss_clkctrl_regs[] __initconst = {
 323         { OMAP4_DSS_CORE_CLKCTRL, omap4_dss_core_bit_data, CLKF_SW_SUP, "l3-dss-clkctrl:0000:8" },
 324         { 0 },
 325 };
 326
 327 static const char * const omap4_sgx_clk_mux_parents[] __initconst = {
 328         "dpll_core_m7x2_ck",
 329         "dpll_per_m7x2_ck",
 330         NULL,
 331 };
 332
 333 static const struct omap_clkctrl_bit_data omap4_gpu_bit_data[] __initconst = {
 334         { 24, TI_CLK_MUX, omap4_sgx_clk_mux_parents, NULL },
 335         { 0 },
 336 };
 337
 338 static const struct omap_clkctrl_reg_data omap4_l3_gfx_clkctrl_regs[] __initconst = {
 339         { OMAP4_GPU_CLKCTRL, omap4_gpu_bit_data, CLKF_SW_SUP, "l3-gfx-clkctrl:0000:24" },
 340         { 0 },
 341 };
 342
 343 static const char * const omap4_hsmmc1_fclk_parents[] __initconst = {
 344         "func_64m_fclk",
 345         "func_96m_fclk",
 346         NULL,
 347 };
 348
 349 static const struct omap_clkctrl_bit_data omap4_mmc1_bit_data[] __initconst = {
 350         { 24, TI_CLK_MUX, omap4_hsmmc1_fclk_parents, NULL },
 351         { 0 },
 352 };
 353
 354 static const struct omap_clkctrl_bit_data omap4_mmc2_bit_data[] __initconst = {
 355         { 24, TI_CLK_MUX, omap4_hsmmc1_fclk_parents, NULL },
 356         { 0 },
 357 };
 358
 359 static const char * const omap4_hsi_fck_parents[] __initconst = {
 360         "dpll_per_m2x2_ck",
 361         NULL,
 362 };
 363
 364 static const struct omap_clkctrl_div_data omap4_hsi_fck_data __initconst = {
 365         .max_div = 4,
 366         .flags = CLK_DIVIDER_POWER_OF_TWO,
 367 };
 368
 369 static const struct omap_clkctrl_bit_data omap4_hsi_bit_data[] __initconst = {
 370         { 24, TI_CLK_DIVIDER, omap4_hsi_fck_parents, &omap4_hsi_fck_data },
 371         { 0 },
 372 };
 373
 374 static const char * const omap4_usb_host_hs_utmi_p1_clk_parents[] __initconst = {
 375         "l3-init-clkctrl:0038:24",
 376         NULL,
 377 };
 378
 379 static const char * const omap4_usb_host_hs_utmi_p2_clk_parents[] __initconst = {
 380         "l3-init-clkctrl:0038:25",
 381         NULL,
 382 };
 383
 384 static const char * const omap4_usb_host_hs_utmi_p3_clk_parents[] __initconst = {
 385         "init_60m_fclk",
 386         NULL,
 387 };
 388
 389 static const char * const omap4_usb_host_hs_hsic480m_p1_clk_parents[] __initconst = {
 390         "dpll_usb_m2_ck",
 391         NULL,
 392 };
 393
 394 static const char * const omap4_utmi_p1_gfclk_parents[] __initconst = {
 395         "init_60m_fclk",
 396         "xclk60mhsp1_ck",
 397         NULL,
 398 };
 399
 400 static const char * const omap4_utmi_p2_gfclk_parents[] __initconst = {
 401         "init_60m_fclk",
 402         "xclk60mhsp2_ck",
 403         NULL,
 404 };
 405
 406 static const struct omap_clkctrl_bit_data omap4_usb_host_hs_bit_data[] __initconst = {
 407         { 8, TI_CLK_GATE, omap4_usb_host_hs_utmi_p1_clk_parents, NULL },
 408         { 9, TI_CLK_GATE, omap4_usb_host_hs_utmi_p2_clk_parents, NULL },
 409         { 10, TI_CLK_GATE, omap4_usb_host_hs_utmi_p3_clk_parents, NULL },
 410         { 11, TI_CLK_GATE, omap4_usb_host_hs_utmi_p3_clk_parents, NULL },
 411         { 12, TI_CLK_GATE, omap4_usb_host_hs_utmi_p3_clk_parents, NULL },
 412         { 13, TI_CLK_GATE, omap4_usb_host_hs_hsic480m_p1_clk_parents, NULL },
 413         { 14, TI_CLK_GATE, omap4_usb_host_hs_hsic480m_p1_clk_parents, NULL },
 414         { 15, TI_CLK_GATE, omap4_dss_48mhz_clk_parents, NULL },
 415         { 24, TI_CLK_MUX, omap4_utmi_p1_gfclk_parents, NULL },
 416         { 25, TI_CLK_MUX, omap4_utmi_p2_gfclk_parents, NULL },
 417         { 0 },
 418 };
 419
 420 static const char * const omap4_usb_otg_hs_xclk_parents[] __initconst = {
 421         "l3-init-clkctrl:0040:24",
 422         NULL,
 423 };
 424
 425 static const char * const omap4_otg_60m_gfclk_parents[] __initconst = {
 426         "utmi_phy_clkout_ck",
 427         "xclk60motg_ck",
 428         NULL,
 429 };
 430
 431 static const struct omap_clkctrl_bit_data omap4_usb_otg_hs_bit_data[] __initconst = {
 432         { 8, TI_CLK_GATE, omap4_usb_otg_hs_xclk_parents, NULL },
 433         { 24, TI_CLK_MUX, omap4_otg_60m_gfclk_parents, NULL },
 434         { 0 },
 435 };
 436
 437 static const struct omap_clkctrl_bit_data omap4_usb_tll_hs_bit_data[] __initconst = {
 438         { 8, TI_CLK_GATE, omap4_usb_host_hs_utmi_p3_clk_parents, NULL },
 439         { 9, TI_CLK_GATE, omap4_usb_host_hs_utmi_p3_clk_parents, NULL },
 440         { 10, TI_CLK_GATE, omap4_usb_host_hs_utmi_p3_clk_parents, NULL },
 441         { 0 },
 442 };
 443
 444 static const char * const omap4_ocp2scp_usb_phy_phy_48m_parents[] __initconst = {
 445         "func_48m_fclk",
 446         NULL,
 447 };
 448
 449 static const struct omap_clkctrl_bit_data omap4_ocp2scp_usb_phy_bit_data[] __initconst = {
 450         { 8, TI_CLK_GATE, omap4_ocp2scp_usb_phy_phy_48m_parents, NULL },
 451         { 0 },
 452 };
 453
 454 static const struct omap_clkctrl_reg_data omap4_l3_init_clkctrl_regs[] __initconst = {
 455         { OMAP4_MMC1_CLKCTRL, omap4_mmc1_bit_data, CLKF_SW_SUP, "l3-init-clkctrl:0008:24" },
 456         { OMAP4_MMC2_CLKCTRL, omap4_mmc2_bit_data, CLKF_SW_SUP, "l3-init-clkctrl:0010:24" },
 457         { OMAP4_HSI_CLKCTRL, omap4_hsi_bit_data, CLKF_HW_SUP, "l3-init-clkctrl:0018:24" },
 458         { OMAP4_USB_HOST_HS_CLKCTRL, omap4_usb_host_hs_bit_data, CLKF_SW_SUP, "init_60m_fclk" },
 459         { OMAP4_USB_OTG_HS_CLKCTRL, omap4_usb_otg_hs_bit_data, CLKF_HW_SUP, "l3_div_ck" },
 460         { OMAP4_USB_TLL_HS_CLKCTRL, omap4_usb_tll_hs_bit_data, CLKF_HW_SUP, "l4_div_ck" },
 461         { OMAP4_USB_HOST_FS_CLKCTRL, NULL, CLKF_SW_SUP, "func_48mc_fclk" },
 462         { OMAP4_OCP2SCP_USB_PHY_CLKCTRL, omap4_ocp2scp_usb_phy_bit_data, CLKF_HW_SUP, "l3-init-clkctrl:00c0:8" },
 463         { 0 },
 464 };
 465
 466 static const char * const omap4_cm2_dm10_mux_parents[] __initconst = {
 467         "sys_clkin_ck",
 468         "sys_32k_ck",
 469         NULL,
 470 };
 471
 472 static const struct omap_clkctrl_bit_data omap4_timer10_bit_data[] __initconst = {
 473         { 24, TI_CLK_MUX, omap4_cm2_dm10_mux_parents, NULL },
 474         { 0 },
 475 };
 476
 477 static const struct omap_clkctrl_bit_data omap4_timer11_bit_data[] __initconst = {
 478         { 24, TI_CLK_MUX, omap4_cm2_dm10_mux_parents, NULL },
 479         { 0 },
 480 };
 481
 482 static const struct omap_clkctrl_bit_data omap4_timer2_bit_data[] __initconst = {
 483         { 24, TI_CLK_MUX, omap4_cm2_dm10_mux_parents, NULL },
 484         { 0 },
 485 };
 486
 487 static const struct omap_clkctrl_bit_data omap4_timer3_bit_data[] __initconst = {
 488         { 24, TI_CLK_MUX, omap4_cm2_dm10_mux_parents, NULL },
 489         { 0 },
 490 };
 491
 492 static const struct omap_clkctrl_bit_data omap4_timer4_bit_data[] __initconst = {
 493         { 24, TI_CLK_MUX, omap4_cm2_dm10_mux_parents, NULL },
 494         { 0 },
 495 };
 496
 497 static const struct omap_clkctrl_bit_data omap4_timer9_bit_data[] __initconst = {
 498         { 24, TI_CLK_MUX, omap4_cm2_dm10_mux_parents, NULL },
 499         { 0 },
 500 };
 501
 502 static const char * const omap4_gpio2_dbclk_parents[] __initconst = {
 503         "sys_32k_ck",
 504         NULL,
 505 };
 506
 507 static const struct omap_clkctrl_bit_data omap4_gpio2_bit_data[] __initconst = {
 508         { 8, TI_CLK_GATE, omap4_gpio2_dbclk_parents, NULL },
 509         { 0 },
 510 };
 511
 512 static const struct omap_clkctrl_bit_data omap4_gpio3_bit_data[] __initconst = {
 513         { 8, TI_CLK_GATE, omap4_gpio2_dbclk_parents, NULL },
 514         { 0 },
 515 };
 516
 517 static const struct omap_clkctrl_bit_data omap4_gpio4_bit_data[] __initconst = {
 518         { 8, TI_CLK_GATE, omap4_gpio2_dbclk_parents, NULL },
 519         { 0 },
 520 };
 521
 522 static const struct omap_clkctrl_bit_data omap4_gpio5_bit_data[] __initconst = {
 523         { 8, TI_CLK_GATE, omap4_gpio2_dbclk_parents, NULL },
 524         { 0 },
 525 };
 526
 527 static const struct omap_clkctrl_bit_data omap4_gpio6_bit_data[] __initconst = {
 528         { 8, TI_CLK_GATE, omap4_gpio2_dbclk_parents, NULL },
 529         { 0 },
 530 };
 531
 532 static const char * const omap4_per_mcbsp4_gfclk_parents[] __initconst = {
 533         "l4-per-clkctrl:00c0:26",
 534         "pad_clks_ck",
 535         NULL,
 536 };
 537
 538 static const char * const omap4_mcbsp4_sync_mux_ck_parents[] __initconst = {
 539         "func_96m_fclk",
 540         "per_abe_nc_fclk",
 541         NULL,
 542 };
 543
 544 static const struct omap_clkctrl_bit_data omap4_mcbsp4_bit_data[] __initconst = {
 545         { 24, TI_CLK_MUX, omap4_per_mcbsp4_gfclk_parents, NULL },
 546         { 26, TI_CLK_MUX, omap4_mcbsp4_sync_mux_ck_parents, NULL },
 547         { 0 },
 548 };
 549
 550 static const char * const omap4_slimbus2_fclk_0_parents[] __initconst = {
 551         "func_24mc_fclk",
 552         NULL,
 553 };
 554
 555 static const char * const omap4_slimbus2_fclk_1_parents[] __initconst = {
 556         "per_abe_24m_fclk",
 557         NULL,
 558 };
 559
 560 static const char * const omap4_slimbus2_slimbus_clk_parents[] __initconst = {
 561         "pad_slimbus_core_clks_ck",
 562         NULL,
 563 };
 564
 565 static const struct omap_clkctrl_bit_data omap4_slimbus2_bit_data[] __initconst = {
 566         { 8, TI_CLK_GATE, omap4_slimbus2_fclk_0_parents, NULL },
 567         { 9, TI_CLK_GATE, omap4_slimbus2_fclk_1_parents, NULL },
 568         { 10, TI_CLK_GATE, omap4_slimbus2_slimbus_clk_parents, NULL },
 569         { 0 },
 570 };
 571
 572 static const struct omap_clkctrl_reg_data omap4_l4_per_clkctrl_regs[] __initconst = {
 573         { OMAP4_TIMER10_CLKCTRL, omap4_timer10_bit_data, CLKF_SW_SUP, "l4-per-clkctrl:0008:24" },
 574         { OMAP4_TIMER11_CLKCTRL, omap4_timer11_bit_data, CLKF_SW_SUP, "l4-per-clkctrl:0010:24" },
 575         { OMAP4_TIMER2_CLKCTRL, omap4_timer2_bit_data, CLKF_SW_SUP, "l4-per-clkctrl:0018:24" },
 576         { OMAP4_TIMER3_CLKCTRL, omap4_timer3_bit_data, CLKF_SW_SUP, "l4-per-clkctrl:0020:24" },
 577         { OMAP4_TIMER4_CLKCTRL, omap4_timer4_bit_data, CLKF_SW_SUP, "l4-per-clkctrl:0028:24" },
 578         { OMAP4_TIMER9_CLKCTRL, omap4_timer9_bit_data, CLKF_SW_SUP, "l4-per-clkctrl:0030:24" },
 579         { OMAP4_ELM_CLKCTRL, NULL, 0, "l4_div_ck" },
 580         { OMAP4_GPIO2_CLKCTRL, omap4_gpio2_bit_data, CLKF_HW_SUP, "l4_div_ck" },
 581         { OMAP4_GPIO3_CLKCTRL, omap4_gpio3_bit_data, CLKF_HW_SUP, "l4_div_ck" },
 582         { OMAP4_GPIO4_CLKCTRL, omap4_gpio4_bit_data, CLKF_HW_SUP, "l4_div_ck" },
 583         { OMAP4_GPIO5_CLKCTRL, omap4_gpio5_bit_data, CLKF_HW_SUP, "l4_div_ck" },
 584         { OMAP4_GPIO6_CLKCTRL, omap4_gpio6_bit_data, CLKF_HW_SUP, "l4_div_ck" },
 585         { OMAP4_HDQ1W_CLKCTRL, NULL, CLKF_SW_SUP, "func_12m_fclk" },
 586         { OMAP4_I2C1_CLKCTRL, NULL, CLKF_SW_SUP, "func_96m_fclk" },
 587         { OMAP4_I2C2_CLKCTRL, NULL, CLKF_SW_SUP, "func_96m_fclk" },
 588         { OMAP4_I2C3_CLKCTRL, NULL, CLKF_SW_SUP, "func_96m_fclk" },
 589         { OMAP4_I2C4_CLKCTRL, NULL, CLKF_SW_SUP, "func_96m_fclk" },
 590         { OMAP4_L4_PER_CLKCTRL, NULL, 0, "l4_div_ck" },
 591         { OMAP4_MCBSP4_CLKCTRL, omap4_mcbsp4_bit_data, CLKF_SW_SUP, "l4-per-clkctrl:00c0:24" },
 592         { OMAP4_MCSPI1_CLKCTRL, NULL, CLKF_SW_SUP, "func_48m_fclk" },
 593         { OMAP4_MCSPI2_CLKCTRL, NULL, CLKF_SW_SUP, "func_48m_fclk" },
 594         { OMAP4_MCSPI3_CLKCTRL, NULL, CLKF_SW_SUP, "func_48m_fclk" },
 595         { OMAP4_MCSPI4_CLKCTRL, NULL, CLKF_SW_SUP, "func_48m_fclk" },
 596         { OMAP4_MMC3_CLKCTRL, NULL, CLKF_SW_SUP, "func_48m_fclk" },
 597         { OMAP4_MMC4_CLKCTRL, NULL, CLKF_SW_SUP, "func_48m_fclk" },
 598         { OMAP4_SLIMBUS2_CLKCTRL, omap4_slimbus2_bit_data, CLKF_SW_SUP, "l4-per-clkctrl:0118:8" },
 599         { OMAP4_UART1_CLKCTRL, NULL, CLKF_SW_SUP, "func_48m_fclk" },
 600         { OMAP4_UART2_CLKCTRL, NULL, CLKF_SW_SUP, "func_48m_fclk" },
 601         { OMAP4_UART3_CLKCTRL, NULL, CLKF_SW_SUP, "func_48m_fclk" },
 602         { OMAP4_UART4_CLKCTRL, NULL, CLKF_SW_SUP, "func_48m_fclk" },
 603         { OMAP4_MMC5_CLKCTRL, NULL, CLKF_SW_SUP, "func_48m_fclk" },
 604         { 0 },
 605 };
 606
 607 static const struct
 608 omap_clkctrl_reg_data omap4_l4_secure_clkctrl_regs[] __initconst = {
 609         { OMAP4_AES1_CLKCTRL, NULL, CLKF_SW_SUP, "l3_div_ck" },
 610         { OMAP4_AES2_CLKCTRL, NULL, CLKF_SW_SUP, "l3_div_ck" },
 611         { OMAP4_DES3DES_CLKCTRL, NULL, CLKF_SW_SUP, "l4_div_ck" },
 612         { OMAP4_PKA_CLKCTRL, NULL, CLKF_SW_SUP, "l4_div_ck" },
 613         { OMAP4_RNG_CLKCTRL, NULL, CLKF_HW_SUP | CLKF_SOC_NONSEC, "l4_div_ck" },
 614         { OMAP4_SHA2MD5_CLKCTRL, NULL, CLKF_SW_SUP, "l3_div_ck" },
 615         { OMAP4_CRYPTODMA_CLKCTRL, NULL, CLKF_HW_SUP | CLKF_SOC_NONSEC, "l3_div_ck" },
 616         { 0 },
 617 };
 618
 619 static const struct omap_clkctrl_bit_data omap4_gpio1_bit_data[] __initconst = {
 620         { 8, TI_CLK_GATE, omap4_gpio2_dbclk_parents, NULL },
 621         { 0 },
 622 };
 623
 624 static const struct omap_clkctrl_bit_data omap4_timer1_bit_data[] __initconst = {
 625         { 24, TI_CLK_MUX, omap4_cm2_dm10_mux_parents, NULL },
 626         { 0 },
 627 };
 628
 629 static const struct omap_clkctrl_reg_data omap4_l4_wkup_clkctrl_regs[] __initconst = {
 630         { OMAP4_L4_WKUP_CLKCTRL, NULL, 0, "l4_wkup_clk_mux_ck" },
 631         { OMAP4_WD_TIMER2_CLKCTRL, NULL, CLKF_SW_SUP, "sys_32k_ck" },
 632         { OMAP4_GPIO1_CLKCTRL, omap4_gpio1_bit_data, CLKF_HW_SUP, "l4_wkup_clk_mux_ck" },
 633         { OMAP4_TIMER1_CLKCTRL, omap4_timer1_bit_data, CLKF_SW_SUP, "l4-wkup-clkctrl:0020:24" },
 634         { OMAP4_COUNTER_32K_CLKCTRL, NULL, 0, "sys_32k_ck" },
 635         { OMAP4_KBD_CLKCTRL, NULL, CLKF_SW_SUP, "sys_32k_ck" },
 636         { 0 },
 637 };
 638
 639 static const char * const omap4_pmd_stm_clock_mux_ck_parents[] __initconst = {
 640         "sys_clkin_ck",
 641         "dpll_core_m6x2_ck",
 642         "tie_low_clock_ck",
 643         NULL,
 644 };
 645
 646 static const char * const omap4_trace_clk_div_div_ck_parents[] __initconst = {
 647         "emu-sys-clkctrl:0000:22",
 648         NULL,
 649 };
 650
 651 static const int omap4_trace_clk_div_div_ck_divs[] __initconst = {
 652         0,
 653         1,
 654         2,
 655         0,
 656         4,
 657         -1,
 658 };
 659
 660 static const struct omap_clkctrl_div_data omap4_trace_clk_div_div_ck_data __initconst = {
 661         .dividers = omap4_trace_clk_div_div_ck_divs,
 662 };
 663
 664 static const char * const omap4_stm_clk_div_ck_parents[] __initconst = {
 665         "emu-sys-clkctrl:0000:20",
 666         NULL,
 667 };
 668
 669 static const struct omap_clkctrl_div_data omap4_stm_clk_div_ck_data __initconst = {
 670         .max_div = 64,
 671         .flags = CLK_DIVIDER_POWER_OF_TWO,
 672 };
 673
 674 static const struct omap_clkctrl_bit_data omap4_debugss_bit_data[] __initconst = {
 675         { 20, TI_CLK_MUX, omap4_pmd_stm_clock_mux_ck_parents, NULL },
 676         { 22, TI_CLK_MUX, omap4_pmd_stm_clock_mux_ck_parents, NULL },
 677         { 24, TI_CLK_DIVIDER, omap4_trace_clk_div_div_ck_parents, &omap4_trace_clk_div_div_ck_data },
 678         { 27, TI_CLK_DIVIDER, omap4_stm_clk_div_ck_parents, &omap4_stm_clk_div_ck_data },
 679         { 0 },
 680 };
 681
 682 static const struct omap_clkctrl_reg_data omap4_emu_sys_clkctrl_regs[] __initconst = {
 683         { OMAP4_DEBUGSS_CLKCTRL, omap4_debugss_bit_data, 0, "trace_clk_div_ck" },
 684         { 0 },
 685 };
 686
 687 const struct omap_clkctrl_data omap4_clkctrl_data[] __initconst = {
 688         { 0x4a004320, omap4_mpuss_clkctrl_regs },
 689         { 0x4a004420, omap4_tesla_clkctrl_regs },
 690         { 0x4a004520, omap4_abe_clkctrl_regs },
 691         { 0x4a008620, omap4_l4_ao_clkctrl_regs },
 692         { 0x4a008720, omap4_l3_1_clkctrl_regs },
 693         { 0x4a008820, omap4_l3_2_clkctrl_regs },
 694         { 0x4a008920, omap4_ducati_clkctrl_regs },
 695         { 0x4a008a20, omap4_l3_dma_clkctrl_regs },
 696         { 0x4a008b20, omap4_l3_emif_clkctrl_regs },
 697         { 0x4a008c20, omap4_d2d_clkctrl_regs },
 698         { 0x4a008d20, omap4_l4_cfg_clkctrl_regs },
 699         { 0x4a008e20, omap4_l3_instr_clkctrl_regs },
 700         { 0x4a008f20, omap4_ivahd_clkctrl_regs },
 701         { 0x4a009020, omap4_iss_clkctrl_regs },
 702         { 0x4a009120, omap4_l3_dss_clkctrl_regs },
 703         { 0x4a009220, omap4_l3_gfx_clkctrl_regs },
 704         { 0x4a009320, omap4_l3_init_clkctrl_regs },
 705         { 0x4a009420, omap4_l4_per_clkctrl_regs },
 706         { 0x4a0095a0, omap4_l4_secure_clkctrl_regs },
 707         { 0x4a307820, omap4_l4_wkup_clkctrl_regs },
 708         { 0x4a307a20, omap4_emu_sys_clkctrl_regs },
 709         { 0 },
 710 };
 711
 712 static struct ti_dt_clk omap44xx_clks[] = {
 713         DT_CLK(NULL, "timer_32k_ck", "sys_32k_ck"),
 714         /*
 715          * XXX: All the clock aliases below are only needed for legacy
 716          * hwmod support. Once hwmod is removed, these can be removed
 717          * also.
 718          */
 719         DT_CLK(NULL, "aess_fclk", "abe-clkctrl:0008:24"),
 720         DT_CLK(NULL, "cm2_dm10_mux", "l4-per-clkctrl:0008:24"),
 721         DT_CLK(NULL, "cm2_dm11_mux", "l4-per-clkctrl:0010:24"),
 722         DT_CLK(NULL, "cm2_dm2_mux", "l4-per-clkctrl:0018:24"),
 723         DT_CLK(NULL, "cm2_dm3_mux", "l4-per-clkctrl:0020:24"),
 724         DT_CLK(NULL, "cm2_dm4_mux", "l4-per-clkctrl:0028:24"),
 725         DT_CLK(NULL, "cm2_dm9_mux", "l4-per-clkctrl:0030:24"),
 726         DT_CLK(NULL, "dmic_sync_mux_ck", "abe-clkctrl:0018:26"),
 727         DT_CLK(NULL, "dmt1_clk_mux", "l4-wkup-clkctrl:0020:24"),
 728         DT_CLK(NULL, "dss_48mhz_clk", "l3-dss-clkctrl:0000:9"),
 729         DT_CLK(NULL, "dss_dss_clk", "l3-dss-clkctrl:0000:8"),
 730         DT_CLK(NULL, "dss_sys_clk", "l3-dss-clkctrl:0000:10"),
 731         DT_CLK(NULL, "dss_tv_clk", "l3-dss-clkctrl:0000:11"),
 732         DT_CLK(NULL, "fdif_fck", "iss-clkctrl:0008:24"),
 733         DT_CLK(NULL, "func_dmic_abe_gfclk", "abe-clkctrl:0018:24"),
 734         DT_CLK(NULL, "func_mcasp_abe_gfclk", "abe-clkctrl:0020:24"),
 735         DT_CLK(NULL, "func_mcbsp1_gfclk", "abe-clkctrl:0028:24"),
 736         DT_CLK(NULL, "func_mcbsp2_gfclk", "abe-clkctrl:0030:24"),
 737         DT_CLK(NULL, "func_mcbsp3_gfclk", "abe-clkctrl:0038:24"),
 738         DT_CLK(NULL, "gpio1_dbclk", "l4-wkup-clkctrl:0018:8"),
 739         DT_CLK(NULL, "gpio2_dbclk", "l4-per-clkctrl:0040:8"),
 740         DT_CLK(NULL, "gpio3_dbclk", "l4-per-clkctrl:0048:8"),
 741         DT_CLK(NULL, "gpio4_dbclk", "l4-per-clkctrl:0050:8"),
 742         DT_CLK(NULL, "gpio5_dbclk", "l4-per-clkctrl:0058:8"),
 743         DT_CLK(NULL, "gpio6_dbclk", "l4-per-clkctrl:0060:8"),
 744         DT_CLK(NULL, "hsi_fck", "l3-init-clkctrl:0018:24"),
 745         DT_CLK(NULL, "hsmmc1_fclk", "l3-init-clkctrl:0008:24"),
 746         DT_CLK(NULL, "hsmmc2_fclk", "l3-init-clkctrl:0010:24"),
 747         DT_CLK(NULL, "iss_ctrlclk", "iss-clkctrl:0000:8"),
 748         DT_CLK(NULL, "mcasp_sync_mux_ck", "abe-clkctrl:0020:26"),
 749         DT_CLK(NULL, "mcbsp1_sync_mux_ck", "abe-clkctrl:0028:26"),
 750         DT_CLK(NULL, "mcbsp2_sync_mux_ck", "abe-clkctrl:0030:26"),
 751         DT_CLK(NULL, "mcbsp3_sync_mux_ck", "abe-clkctrl:0038:26"),
 752         DT_CLK(NULL, "mcbsp4_sync_mux_ck", "l4-per-clkctrl:00c0:26"),
 753         DT_CLK(NULL, "ocp2scp_usb_phy_phy_48m", "l3-init-clkctrl:00c0:8"),
 754         DT_CLK(NULL, "otg_60m_gfclk", "l3-init-clkctrl:0040:24"),
 755         DT_CLK(NULL, "per_mcbsp4_gfclk", "l4-per-clkctrl:00c0:24"),
 756         DT_CLK(NULL, "pmd_stm_clock_mux_ck", "emu-sys-clkctrl:0000:20"),
 757         DT_CLK(NULL, "pmd_trace_clk_mux_ck", "emu-sys-clkctrl:0000:22"),
 758         DT_CLK(NULL, "sgx_clk_mux", "l3-gfx-clkctrl:0000:24"),
 759         DT_CLK(NULL, "slimbus1_fclk_0", "abe-clkctrl:0040:8"),
 760         DT_CLK(NULL, "slimbus1_fclk_1", "abe-clkctrl:0040:9"),
 761         DT_CLK(NULL, "slimbus1_fclk_2", "abe-clkctrl:0040:10"),
 762         DT_CLK(NULL, "slimbus1_slimbus_clk", "abe-clkctrl:0040:11"),
 763         DT_CLK(NULL, "slimbus2_fclk_0", "l4-per-clkctrl:0118:8"),
 764         DT_CLK(NULL, "slimbus2_fclk_1", "l4-per-clkctrl:0118:9"),
 765         DT_CLK(NULL, "slimbus2_slimbus_clk", "l4-per-clkctrl:0118:10"),
 766         DT_CLK(NULL, "stm_clk_div_ck", "emu-sys-clkctrl:0000:27"),
 767         DT_CLK(NULL, "timer5_sync_mux", "abe-clkctrl:0048:24"),
 768         DT_CLK(NULL, "timer6_sync_mux", "abe-clkctrl:0050:24"),
 769         DT_CLK(NULL, "timer7_sync_mux", "abe-clkctrl:0058:24"),
 770         DT_CLK(NULL, "timer8_sync_mux", "abe-clkctrl:0060:24"),
 771         DT_CLK(NULL, "trace_clk_div_div_ck", "emu-sys-clkctrl:0000:24"),
 772         DT_CLK(NULL, "usb_host_hs_func48mclk", "l3-init-clkctrl:0038:15"),
 773         DT_CLK(NULL, "usb_host_hs_hsic480m_p1_clk", "l3-init-clkctrl:0038:13"),
 774         DT_CLK(NULL, "usb_host_hs_hsic480m_p2_clk", "l3-init-clkctrl:0038:14"),
 775         DT_CLK(NULL, "usb_host_hs_hsic60m_p1_clk", "l3-init-clkctrl:0038:11"),
 776         DT_CLK(NULL, "usb_host_hs_hsic60m_p2_clk", "l3-init-clkctrl:0038:12"),
 777         DT_CLK(NULL, "usb_host_hs_utmi_p1_clk", "l3-init-clkctrl:0038:8"),
 778         DT_CLK(NULL, "usb_host_hs_utmi_p2_clk", "l3-init-clkctrl:0038:9"),
 779         DT_CLK(NULL, "usb_host_hs_utmi_p3_clk", "l3_init-clkctrl:0038:10"),
 780         DT_CLK(NULL, "usb_otg_hs_xclk", "l3-init-clkctrl:0040:8"),
 781         DT_CLK(NULL, "usb_tll_hs_usb_ch0_clk", "l3-init-clkctrl:0048:8"),
 782         DT_CLK(NULL, "usb_tll_hs_usb_ch1_clk", "l3-init-clkctrl:0048:9"),
 783         DT_CLK(NULL, "usb_tll_hs_usb_ch2_clk", "l3-init-clkctrl:0048:10"),
 784         DT_CLK(NULL, "utmi_p1_gfclk", "l3-init-clkctrl:0038:24"),
 785         DT_CLK(NULL, "utmi_p2_gfclk", "l3-init-clkctrl:0038:25"),
 786         { .node_name = NULL },
 787 };
 788
 789 int __init omap4xxx_dt_clk_init(void)
 790 {
 791         int rc;
 792         struct clk *abe_dpll_ref, *abe_dpll, *sys_32k_ck, *usb_dpll;
 793
 794         ti_dt_clocks_register(omap44xx_clks);
 795
 796         omap2_clk_disable_autoidle_all();
 797
 798         ti_clk_add_aliases();
 799
 800         /*
 801          * Lock USB DPLL on OMAP4 devices so that the L3INIT power
 802          * domain can transition to retention state when not in use.
 803          */
 804         usb_dpll = clk_get_sys(NULL, "dpll_usb_ck");
 805         rc = clk_set_rate(usb_dpll, OMAP4_DPLL_USB_DEFFREQ);
 806         if (rc)
 807                 pr_err("%s: failed to configure USB DPLL!\n", __func__);
 808
 809         /*
 810          * On OMAP4460 the ABE DPLL fails to turn on if in idle low-power
 811          * state when turning the ABE clock domain. Workaround this by
 812          * locking the ABE DPLL on boot.
 813          * Lock the ABE DPLL in any case to avoid issues with audio.
 814          */
 815         abe_dpll_ref = clk_get_sys(NULL, "abe_dpll_refclk_mux_ck");
 816         sys_32k_ck = clk_get_sys(NULL, "sys_32k_ck");
 817         rc = clk_set_parent(abe_dpll_ref, sys_32k_ck);
 818         abe_dpll = clk_get_sys(NULL, "dpll_abe_ck");
 819         if (!rc)
 820                 rc = clk_set_rate(abe_dpll, OMAP4_DPLL_ABE_DEFFREQ);
 821         if (rc)
 822                 pr_err("%s: failed to configure ABE DPLL!\n", __func__);
 823
 824         return 0;
 825 }