drivers/clk/ti/clk-3xxx.c

   1 /*
   2  * OMAP3 Clock init
   3  *
   4  * Copyright (C) 2013 Texas Instruments, Inc
   5  *     Tero Kristo (t-kristo@ti.com)
   6  *
   7  * This program is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU General Public License as
   9  * published by the Free Software Foundation version 2.
  10  *
  11  * This program is distributed "as is" WITHOUT ANY WARRANTY of any
  12  * kind, whether express or implied; without even the implied warranty
  13  * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  14  * GNU General Public License for more details.
  15  */
  16
  17 #include <linux/kernel.h>
  18 #include <linux/list.h>
  19 #include <linux/clk.h>
  20 #include <linux/clk-provider.h>
  21 #include <linux/clk/ti.h>
  22
  23 #include "clock.h"
  24
  25 /*
  26  * DPLL5_FREQ_FOR_USBHOST: USBHOST and USBTLL are the only clocks
  27  * that are sourced by DPLL5, and both of these require this clock
  28  * to be at 120 MHz for proper operation.
  29  */
  30 #define DPLL5_FREQ_FOR_USBHOST          120000000
  31
  32 #define OMAP3430ES2_ST_DSS_IDLE_SHIFT                   1
  33 #define OMAP3430ES2_ST_HSOTGUSB_IDLE_SHIFT              5
  34 #define OMAP3430ES2_ST_SSI_IDLE_SHIFT                   8
  35
  36 #define OMAP34XX_CM_IDLEST_VAL                          1
  37
  38 /*
  39  * In AM35xx IPSS, the {ICK,FCK} enable bits for modules are exported
  40  * in the same register at a bit offset of 0x8. The EN_ACK for ICK is
  41  * at an offset of 4 from ICK enable bit.
  42  */
  43 #define AM35XX_IPSS_ICK_MASK                    0xF
  44 #define AM35XX_IPSS_ICK_EN_ACK_OFFSET           0x4
  45 #define AM35XX_IPSS_ICK_FCK_OFFSET              0x8
  46 #define AM35XX_IPSS_CLK_IDLEST_VAL              0
  47
  48 #define AM35XX_ST_IPSS_SHIFT                    5
  49
  50 /**
  51  * omap3430es2_clk_ssi_find_idlest - return CM_IDLEST info for SSI
  52  * @clk: struct clk * being enabled
  53  * @idlest_reg: void __iomem ** to store CM_IDLEST reg address into
  54  * @idlest_bit: pointer to a u8 to store the CM_IDLEST bit shift into
  55  * @idlest_val: pointer to a u8 to store the CM_IDLEST indicator
  56  *
  57  * The OMAP3430ES2 SSI target CM_IDLEST bit is at a different shift
  58  * from the CM_{I,F}CLKEN bit.  Pass back the correct info via
  59  * @idlest_reg and @idlest_bit.  No return value.
  60  */
  61 static void omap3430es2_clk_ssi_find_idlest(struct clk_hw_omap *clk,
  62                                             void __iomem **idlest_reg,
  63                                             u8 *idlest_bit,
  64                                             u8 *idlest_val)
  65 {
  66         u32 r;
  67
  68         r = (((__force u32)clk->enable_reg & ~0xf0) | 0x20);
  69         *idlest_reg = (__force void __iomem *)r;
  70         *idlest_bit = OMAP3430ES2_ST_SSI_IDLE_SHIFT;
  71         *idlest_val = OMAP34XX_CM_IDLEST_VAL;
  72 }
  73
  74 const struct clk_hw_omap_ops clkhwops_omap3430es2_iclk_ssi_wait = {
  75         .allow_idle     = omap2_clkt_iclk_allow_idle,
  76         .deny_idle      = omap2_clkt_iclk_deny_idle,
  77         .find_idlest    = omap3430es2_clk_ssi_find_idlest,
  78         .find_companion = omap2_clk_dflt_find_companion,
  79 };
  80
  81 /**
  82  * omap3430es2_clk_dss_usbhost_find_idlest - CM_IDLEST info for DSS, USBHOST
  83  * @clk: struct clk * being enabled
  84  * @idlest_reg: void __iomem ** to store CM_IDLEST reg address into
  85  * @idlest_bit: pointer to a u8 to store the CM_IDLEST bit shift into
  86  * @idlest_val: pointer to a u8 to store the CM_IDLEST indicator
  87  *
  88  * Some OMAP modules on OMAP3 ES2+ chips have both initiator and
  89  * target IDLEST bits.  For our purposes, we are concerned with the
  90  * target IDLEST bits, which exist at a different bit position than
  91  * the *CLKEN bit position for these modules (DSS and USBHOST) (The
  92  * default find_idlest code assumes that they are at the same
  93  * position.)  No return value.
  94  */
  95 static void omap3430es2_clk_dss_usbhost_find_idlest(struct clk_hw_omap *clk,
  96                                                     void __iomem **idlest_reg,
  97                                                     u8 *idlest_bit,
  98                                                     u8 *idlest_val)
  99 {
 100         u32 r;
 101
 102         r = (((__force u32)clk->enable_reg & ~0xf0) | 0x20);
 103         *idlest_reg = (__force void __iomem *)r;
 104         /* USBHOST_IDLE has same shift */
 105         *idlest_bit = OMAP3430ES2_ST_DSS_IDLE_SHIFT;
 106         *idlest_val = OMAP34XX_CM_IDLEST_VAL;
 107 }
 108
 109 const struct clk_hw_omap_ops clkhwops_omap3430es2_dss_usbhost_wait = {
 110         .find_idlest    = omap3430es2_clk_dss_usbhost_find_idlest,
 111         .find_companion = omap2_clk_dflt_find_companion,
 112 };
 113
 114 const struct clk_hw_omap_ops clkhwops_omap3430es2_iclk_dss_usbhost_wait = {
 115         .allow_idle     = omap2_clkt_iclk_allow_idle,
 116         .deny_idle      = omap2_clkt_iclk_deny_idle,
 117         .find_idlest    = omap3430es2_clk_dss_usbhost_find_idlest,
 118         .find_companion = omap2_clk_dflt_find_companion,
 119 };
 120
 121 /**
 122  * omap3430es2_clk_hsotgusb_find_idlest - return CM_IDLEST info for HSOTGUSB
 123  * @clk: struct clk * being enabled
 124  * @idlest_reg: void __iomem ** to store CM_IDLEST reg address into
 125  * @idlest_bit: pointer to a u8 to store the CM_IDLEST bit shift into
 126  * @idlest_val: pointer to a u8 to store the CM_IDLEST indicator
 127  *
 128  * The OMAP3430ES2 HSOTGUSB target CM_IDLEST bit is at a different
 129  * shift from the CM_{I,F}CLKEN bit.  Pass back the correct info via
 130  * @idlest_reg and @idlest_bit.  No return value.
 131  */
 132 static void omap3430es2_clk_hsotgusb_find_idlest(struct clk_hw_omap *clk,
 133                                                  void __iomem **idlest_reg,
 134                                                  u8 *idlest_bit,
 135                                                  u8 *idlest_val)
 136 {
 137         u32 r;
 138
 139         r = (((__force u32)clk->enable_reg & ~0xf0) | 0x20);
 140         *idlest_reg = (__force void __iomem *)r;
 141         *idlest_bit = OMAP3430ES2_ST_HSOTGUSB_IDLE_SHIFT;
 142         *idlest_val = OMAP34XX_CM_IDLEST_VAL;
 143 }
 144
 145 const struct clk_hw_omap_ops clkhwops_omap3430es2_iclk_hsotgusb_wait = {
 146         .allow_idle     = omap2_clkt_iclk_allow_idle,
 147         .deny_idle      = omap2_clkt_iclk_deny_idle,
 148         .find_idlest    = omap3430es2_clk_hsotgusb_find_idlest,
 149         .find_companion = omap2_clk_dflt_find_companion,
 150 };
 151
 152 /**
 153  * am35xx_clk_find_idlest - return clock ACK info for AM35XX IPSS
 154  * @clk: struct clk * being enabled
 155  * @idlest_reg: void __iomem ** to store CM_IDLEST reg address into
 156  * @idlest_bit: pointer to a u8 to store the CM_IDLEST bit shift into
 157  * @idlest_val: pointer to a u8 to store the CM_IDLEST indicator
 158  *
 159  * The interface clocks on AM35xx IPSS reflects the clock idle status
 160  * in the enable register itsel at a bit offset of 4 from the enable
 161  * bit. A value of 1 indicates that clock is enabled.
 162  */
 163 static void am35xx_clk_find_idlest(struct clk_hw_omap *clk,
 164                                    void __iomem **idlest_reg,
 165                                    u8 *idlest_bit,
 166                                    u8 *idlest_val)
 167 {
 168         *idlest_reg = (__force void __iomem *)(clk->enable_reg);
 169         *idlest_bit = clk->enable_bit + AM35XX_IPSS_ICK_EN_ACK_OFFSET;
 170         *idlest_val = AM35XX_IPSS_CLK_IDLEST_VAL;
 171 }
 172
 173 /**
 174  * am35xx_clk_find_companion - find companion clock to @clk
 175  * @clk: struct clk * to find the companion clock of
 176  * @other_reg: void __iomem ** to return the companion clock CM_*CLKEN va in
 177  * @other_bit: u8 ** to return the companion clock bit shift in
 178  *
 179  * Some clocks don't have companion clocks.  For example, modules with
 180  * only an interface clock (such as HECC) don't have a companion
 181  * clock.  Right now, this code relies on the hardware exporting a bit
 182  * in the correct companion register that indicates that the
 183  * nonexistent 'companion clock' is active.  Future patches will
 184  * associate this type of code with per-module data structures to
 185  * avoid this issue, and remove the casts.  No return value.
 186  */
 187 static void am35xx_clk_find_companion(struct clk_hw_omap *clk,
 188                                       void __iomem **other_reg,
 189                                       u8 *other_bit)
 190 {
 191         *other_reg = (__force void __iomem *)(clk->enable_reg);
 192         if (clk->enable_bit & AM35XX_IPSS_ICK_MASK)
 193                 *other_bit = clk->enable_bit + AM35XX_IPSS_ICK_FCK_OFFSET;
 194         else
 195         *other_bit = clk->enable_bit - AM35XX_IPSS_ICK_FCK_OFFSET;
 196 }
 197
 198 const struct clk_hw_omap_ops clkhwops_am35xx_ipss_module_wait = {
 199         .find_idlest    = am35xx_clk_find_idlest,
 200         .find_companion = am35xx_clk_find_companion,
 201 };
 202
 203 /**
 204  * am35xx_clk_ipss_find_idlest - return CM_IDLEST info for IPSS
 205  * @clk: struct clk * being enabled
 206  * @idlest_reg: void __iomem ** to store CM_IDLEST reg address into
 207  * @idlest_bit: pointer to a u8 to store the CM_IDLEST bit shift into
 208  * @idlest_val: pointer to a u8 to store the CM_IDLEST indicator
 209  *
 210  * The IPSS target CM_IDLEST bit is at a different shift from the
 211  * CM_{I,F}CLKEN bit.  Pass back the correct info via @idlest_reg
 212  * and @idlest_bit.  No return value.
 213  */
 214 static void am35xx_clk_ipss_find_idlest(struct clk_hw_omap *clk,
 215                                         void __iomem **idlest_reg,
 216                                         u8 *idlest_bit,
 217                                         u8 *idlest_val)
 218 {
 219         u32 r;
 220
 221         r = (((__force u32)clk->enable_reg & ~0xf0) | 0x20);
 222         *idlest_reg = (__force void __iomem *)r;
 223         *idlest_bit = AM35XX_ST_IPSS_SHIFT;
 224         *idlest_val = OMAP34XX_CM_IDLEST_VAL;
 225 }
 226
 227 const struct clk_hw_omap_ops clkhwops_am35xx_ipss_wait = {
 228         .allow_idle     = omap2_clkt_iclk_allow_idle,
 229         .deny_idle      = omap2_clkt_iclk_deny_idle,
 230         .find_idlest    = am35xx_clk_ipss_find_idlest,
 231         .find_companion = omap2_clk_dflt_find_companion,
 232 };
 233
 234 static struct ti_dt_clk omap3xxx_clks[] = {
 235         DT_CLK(NULL, "apb_pclk", "dummy_apb_pclk"),
 236         DT_CLK(NULL, "omap_32k_fck", "omap_32k_fck"),
 237         DT_CLK(NULL, "virt_12m_ck", "virt_12m_ck"),
 238         DT_CLK(NULL, "virt_13m_ck", "virt_13m_ck"),
 239         DT_CLK(NULL, "virt_19200000_ck", "virt_19200000_ck"),
 240         DT_CLK(NULL, "virt_26000000_ck", "virt_26000000_ck"),
 241         DT_CLK(NULL, "virt_38_4m_ck", "virt_38_4m_ck"),
 242         DT_CLK(NULL, "osc_sys_ck", "osc_sys_ck"),
 243         DT_CLK("twl", "fck", "osc_sys_ck"),
 244         DT_CLK(NULL, "sys_ck", "sys_ck"),
 245         DT_CLK(NULL, "omap_96m_alwon_fck", "omap_96m_alwon_fck"),
 246         DT_CLK("etb", "emu_core_alwon_ck", "emu_core_alwon_ck"),
 247         DT_CLK(NULL, "sys_altclk", "sys_altclk"),
 248         DT_CLK(NULL, "sys_clkout1", "sys_clkout1"),
 249         DT_CLK(NULL, "dpll1_ck", "dpll1_ck"),
 250         DT_CLK(NULL, "dpll1_x2_ck", "dpll1_x2_ck"),
 251         DT_CLK(NULL, "dpll1_x2m2_ck", "dpll1_x2m2_ck"),
 252         DT_CLK(NULL, "dpll3_ck", "dpll3_ck"),
 253         DT_CLK(NULL, "core_ck", "core_ck"),
 254         DT_CLK(NULL, "dpll3_x2_ck", "dpll3_x2_ck"),
 255         DT_CLK(NULL, "dpll3_m2_ck", "dpll3_m2_ck"),
 256         DT_CLK(NULL, "dpll3_m2x2_ck", "dpll3_m2x2_ck"),
 257         DT_CLK(NULL, "dpll3_m3_ck", "dpll3_m3_ck"),
 258         DT_CLK(NULL, "dpll3_m3x2_ck", "dpll3_m3x2_ck"),
 259         DT_CLK(NULL, "dpll4_ck", "dpll4_ck"),
 260         DT_CLK(NULL, "dpll4_x2_ck", "dpll4_x2_ck"),
 261         DT_CLK(NULL, "omap_96m_fck", "omap_96m_fck"),
 262         DT_CLK(NULL, "cm_96m_fck", "cm_96m_fck"),
 263         DT_CLK(NULL, "omap_54m_fck", "omap_54m_fck"),
 264         DT_CLK(NULL, "omap_48m_fck", "omap_48m_fck"),
 265         DT_CLK(NULL, "omap_12m_fck", "omap_12m_fck"),
 266         DT_CLK(NULL, "dpll4_m2_ck", "dpll4_m2_ck"),
 267         DT_CLK(NULL, "dpll4_m2x2_ck", "dpll4_m2x2_ck"),
 268         DT_CLK(NULL, "dpll4_m3_ck", "dpll4_m3_ck"),
 269         DT_CLK(NULL, "dpll4_m3x2_ck", "dpll4_m3x2_ck"),
 270         DT_CLK(NULL, "dpll4_m4_ck", "dpll4_m4_ck"),
 271         DT_CLK(NULL, "dpll4_m4x2_ck", "dpll4_m4x2_ck"),
 272         DT_CLK(NULL, "dpll4_m5_ck", "dpll4_m5_ck"),
 273         DT_CLK(NULL, "dpll4_m5x2_ck", "dpll4_m5x2_ck"),
 274         DT_CLK(NULL, "dpll4_m6_ck", "dpll4_m6_ck"),
 275         DT_CLK(NULL, "dpll4_m6x2_ck", "dpll4_m6x2_ck"),
 276         DT_CLK("etb", "emu_per_alwon_ck", "emu_per_alwon_ck"),
 277         DT_CLK(NULL, "clkout2_src_ck", "clkout2_src_ck"),
 278         DT_CLK(NULL, "sys_clkout2", "sys_clkout2"),
 279         DT_CLK(NULL, "corex2_fck", "corex2_fck"),
 280         DT_CLK(NULL, "dpll1_fck", "dpll1_fck"),
 281         DT_CLK(NULL, "mpu_ck", "mpu_ck"),
 282         DT_CLK(NULL, "arm_fck", "arm_fck"),
 283         DT_CLK("etb", "emu_mpu_alwon_ck", "emu_mpu_alwon_ck"),
 284         DT_CLK(NULL, "l3_ick", "l3_ick"),
 285         DT_CLK(NULL, "l4_ick", "l4_ick"),
 286         DT_CLK(NULL, "rm_ick", "rm_ick"),
 287         DT_CLK(NULL, "gpt10_fck", "gpt10_fck"),
 288         DT_CLK(NULL, "gpt11_fck", "gpt11_fck"),
 289         DT_CLK(NULL, "core_96m_fck", "core_96m_fck"),
 290         DT_CLK(NULL, "mmchs2_fck", "mmchs2_fck"),
 291         DT_CLK(NULL, "mmchs1_fck", "mmchs1_fck"),
 292         DT_CLK(NULL, "i2c3_fck", "i2c3_fck"),
 293         DT_CLK(NULL, "i2c2_fck", "i2c2_fck"),
 294         DT_CLK(NULL, "i2c1_fck", "i2c1_fck"),
 295         DT_CLK(NULL, "core_48m_fck", "core_48m_fck"),
 296         DT_CLK(NULL, "mcspi4_fck", "mcspi4_fck"),
 297         DT_CLK(NULL, "mcspi3_fck", "mcspi3_fck"),
 298         DT_CLK(NULL, "mcspi2_fck", "mcspi2_fck"),
 299         DT_CLK(NULL, "mcspi1_fck", "mcspi1_fck"),
 300         DT_CLK(NULL, "uart2_fck", "uart2_fck"),
 301         DT_CLK(NULL, "uart1_fck", "uart1_fck"),
 302         DT_CLK(NULL, "core_12m_fck", "core_12m_fck"),
 303         DT_CLK("omap_hdq.0", "fck", "hdq_fck"),
 304         DT_CLK(NULL, "hdq_fck", "hdq_fck"),
 305         DT_CLK(NULL, "core_l3_ick", "core_l3_ick"),
 306         DT_CLK(NULL, "sdrc_ick", "sdrc_ick"),
 307         DT_CLK(NULL, "gpmc_fck", "gpmc_fck"),
 308         DT_CLK(NULL, "core_l4_ick", "core_l4_ick"),
 309         DT_CLK("omap_hsmmc.1", "ick", "mmchs2_ick"),
 310         DT_CLK("omap_hsmmc.0", "ick", "mmchs1_ick"),
 311         DT_CLK(NULL, "mmchs2_ick", "mmchs2_ick"),
 312         DT_CLK(NULL, "mmchs1_ick", "mmchs1_ick"),
 313         DT_CLK("omap_hdq.0", "ick", "hdq_ick"),
 314         DT_CLK(NULL, "hdq_ick", "hdq_ick"),
 315         DT_CLK("omap2_mcspi.4", "ick", "mcspi4_ick"),
 316         DT_CLK("omap2_mcspi.3", "ick", "mcspi3_ick"),
 317         DT_CLK("omap2_mcspi.2", "ick", "mcspi2_ick"),
 318         DT_CLK("omap2_mcspi.1", "ick", "mcspi1_ick"),
 319         DT_CLK(NULL, "mcspi4_ick", "mcspi4_ick"),
 320         DT_CLK(NULL, "mcspi3_ick", "mcspi3_ick"),
 321         DT_CLK(NULL, "mcspi2_ick", "mcspi2_ick"),
 322         DT_CLK(NULL, "mcspi1_ick", "mcspi1_ick"),
 323         DT_CLK("omap_i2c.3", "ick", "i2c3_ick"),
 324         DT_CLK("omap_i2c.2", "ick", "i2c2_ick"),
 325         DT_CLK("omap_i2c.1", "ick", "i2c1_ick"),
 326         DT_CLK(NULL, "i2c3_ick", "i2c3_ick"),
 327         DT_CLK(NULL, "i2c2_ick", "i2c2_ick"),
 328         DT_CLK(NULL, "i2c1_ick", "i2c1_ick"),
 329         DT_CLK(NULL, "uart2_ick", "uart2_ick"),
 330         DT_CLK(NULL, "uart1_ick", "uart1_ick"),
 331         DT_CLK(NULL, "gpt11_ick", "gpt11_ick"),
 332         DT_CLK(NULL, "gpt10_ick", "gpt10_ick"),
 333         DT_CLK(NULL, "omapctrl_ick", "omapctrl_ick"),
 334         DT_CLK(NULL, "dss_tv_fck", "dss_tv_fck"),
 335         DT_CLK(NULL, "dss_96m_fck", "dss_96m_fck"),
 336         DT_CLK(NULL, "dss2_alwon_fck", "dss2_alwon_fck"),
 337         DT_CLK(NULL, "init_60m_fclk", "dummy_ck"),
 338         DT_CLK(NULL, "gpt1_fck", "gpt1_fck"),
 339         DT_CLK(NULL, "aes2_ick", "aes2_ick"),
 340         DT_CLK(NULL, "wkup_32k_fck", "wkup_32k_fck"),
 341         DT_CLK(NULL, "gpio1_dbck", "gpio1_dbck"),
 342         DT_CLK(NULL, "sha12_ick", "sha12_ick"),
 343         DT_CLK(NULL, "wdt2_fck", "wdt2_fck"),
 344         DT_CLK("omap_wdt", "ick", "wdt2_ick"),
 345         DT_CLK(NULL, "wdt2_ick", "wdt2_ick"),
 346         DT_CLK(NULL, "wdt1_ick", "wdt1_ick"),
 347         DT_CLK(NULL, "gpio1_ick", "gpio1_ick"),
 348         DT_CLK(NULL, "omap_32ksync_ick", "omap_32ksync_ick"),
 349         DT_CLK(NULL, "gpt12_ick", "gpt12_ick"),
 350         DT_CLK(NULL, "gpt1_ick", "gpt1_ick"),
 351         DT_CLK(NULL, "per_96m_fck", "per_96m_fck"),
 352         DT_CLK(NULL, "per_48m_fck", "per_48m_fck"),
 353         DT_CLK(NULL, "uart3_fck", "uart3_fck"),
 354         DT_CLK(NULL, "gpt2_fck", "gpt2_fck"),
 355         DT_CLK(NULL, "gpt3_fck", "gpt3_fck"),
 356         DT_CLK(NULL, "gpt4_fck", "gpt4_fck"),
 357         DT_CLK(NULL, "gpt5_fck", "gpt5_fck"),
 358         DT_CLK(NULL, "gpt6_fck", "gpt6_fck"),
 359         DT_CLK(NULL, "gpt7_fck", "gpt7_fck"),
 360         DT_CLK(NULL, "gpt8_fck", "gpt8_fck"),
 361         DT_CLK(NULL, "gpt9_fck", "gpt9_fck"),
 362         DT_CLK(NULL, "per_32k_alwon_fck", "per_32k_alwon_fck"),
 363         DT_CLK(NULL, "gpio6_dbck", "gpio6_dbck"),
 364         DT_CLK(NULL, "gpio5_dbck", "gpio5_dbck"),
 365         DT_CLK(NULL, "gpio4_dbck", "gpio4_dbck"),
 366         DT_CLK(NULL, "gpio3_dbck", "gpio3_dbck"),
 367         DT_CLK(NULL, "gpio2_dbck", "gpio2_dbck"),
 368         DT_CLK(NULL, "wdt3_fck", "wdt3_fck"),
 369         DT_CLK(NULL, "per_l4_ick", "per_l4_ick"),
 370         DT_CLK(NULL, "gpio6_ick", "gpio6_ick"),
 371         DT_CLK(NULL, "gpio5_ick", "gpio5_ick"),
 372         DT_CLK(NULL, "gpio4_ick", "gpio4_ick"),
 373         DT_CLK(NULL, "gpio3_ick", "gpio3_ick"),
 374         DT_CLK(NULL, "gpio2_ick", "gpio2_ick"),
 375         DT_CLK(NULL, "wdt3_ick", "wdt3_ick"),
 376         DT_CLK(NULL, "uart3_ick", "uart3_ick"),
 377         DT_CLK(NULL, "gpt9_ick", "gpt9_ick"),
 378         DT_CLK(NULL, "gpt8_ick", "gpt8_ick"),
 379         DT_CLK(NULL, "gpt7_ick", "gpt7_ick"),
 380         DT_CLK(NULL, "gpt6_ick", "gpt6_ick"),
 381         DT_CLK(NULL, "gpt5_ick", "gpt5_ick"),
 382         DT_CLK(NULL, "gpt4_ick", "gpt4_ick"),
 383         DT_CLK(NULL, "gpt3_ick", "gpt3_ick"),
 384         DT_CLK(NULL, "gpt2_ick", "gpt2_ick"),
 385         DT_CLK(NULL, "mcbsp_clks", "mcbsp_clks"),
 386         DT_CLK(NULL, "mcbsp1_ick", "mcbsp1_ick"),
 387         DT_CLK(NULL, "mcbsp2_ick", "mcbsp2_ick"),
 388         DT_CLK(NULL, "mcbsp3_ick", "mcbsp3_ick"),
 389         DT_CLK(NULL, "mcbsp4_ick", "mcbsp4_ick"),
 390         DT_CLK(NULL, "mcbsp5_ick", "mcbsp5_ick"),
 391         DT_CLK(NULL, "mcbsp1_fck", "mcbsp1_fck"),
 392         DT_CLK(NULL, "mcbsp2_fck", "mcbsp2_fck"),
 393         DT_CLK(NULL, "mcbsp3_fck", "mcbsp3_fck"),
 394         DT_CLK(NULL, "mcbsp4_fck", "mcbsp4_fck"),
 395         DT_CLK(NULL, "mcbsp5_fck", "mcbsp5_fck"),
 396         DT_CLK("etb", "emu_src_ck", "emu_src_ck"),
 397         DT_CLK(NULL, "emu_src_ck", "emu_src_ck"),
 398         DT_CLK(NULL, "pclk_fck", "pclk_fck"),
 399         DT_CLK(NULL, "pclkx2_fck", "pclkx2_fck"),
 400         DT_CLK(NULL, "atclk_fck", "atclk_fck"),
 401         DT_CLK(NULL, "traceclk_src_fck", "traceclk_src_fck"),
 402         DT_CLK(NULL, "traceclk_fck", "traceclk_fck"),
 403         DT_CLK(NULL, "secure_32k_fck", "secure_32k_fck"),
 404         DT_CLK(NULL, "gpt12_fck", "gpt12_fck"),
 405         DT_CLK(NULL, "wdt1_fck", "wdt1_fck"),
 406         DT_CLK(NULL, "timer_32k_ck", "omap_32k_fck"),
 407         DT_CLK(NULL, "timer_sys_ck", "sys_ck"),
 408         DT_CLK(NULL, "cpufreq_ck", "dpll1_ck"),
 409         { .node_name = NULL },
 410 };
 411
 412 static struct ti_dt_clk omap34xx_omap36xx_clks[] = {
 413         DT_CLK(NULL, "aes1_ick", "aes1_ick"),
 414         DT_CLK("omap_rng", "ick", "rng_ick"),
 415         DT_CLK("omap3-rom-rng", "ick", "rng_ick"),
 416         DT_CLK(NULL, "sha11_ick", "sha11_ick"),
 417         DT_CLK(NULL, "des1_ick", "des1_ick"),
 418         DT_CLK(NULL, "cam_mclk", "cam_mclk"),
 419         DT_CLK(NULL, "cam_ick", "cam_ick"),
 420         DT_CLK(NULL, "csi2_96m_fck", "csi2_96m_fck"),
 421         DT_CLK(NULL, "security_l3_ick", "security_l3_ick"),
 422         DT_CLK(NULL, "pka_ick", "pka_ick"),
 423         DT_CLK(NULL, "icr_ick", "icr_ick"),
 424         DT_CLK("omap-aes", "ick", "aes2_ick"),
 425         DT_CLK("omap-sham", "ick", "sha12_ick"),
 426         DT_CLK(NULL, "des2_ick", "des2_ick"),
 427         DT_CLK(NULL, "mspro_ick", "mspro_ick"),
 428         DT_CLK(NULL, "mailboxes_ick", "mailboxes_ick"),
 429         DT_CLK(NULL, "ssi_l4_ick", "ssi_l4_ick"),
 430         DT_CLK(NULL, "sr1_fck", "sr1_fck"),
 431         DT_CLK(NULL, "sr2_fck", "sr2_fck"),
 432         DT_CLK(NULL, "sr_l4_ick", "sr_l4_ick"),
 433         DT_CLK(NULL, "security_l4_ick2", "security_l4_ick2"),
 434         DT_CLK(NULL, "wkup_l4_ick", "wkup_l4_ick"),
 435         DT_CLK(NULL, "dpll2_fck", "dpll2_fck"),
 436         DT_CLK(NULL, "iva2_ck", "iva2_ck"),
 437         DT_CLK(NULL, "modem_fck", "modem_fck"),
 438         DT_CLK(NULL, "sad2d_ick", "sad2d_ick"),
 439         DT_CLK(NULL, "mad2d_ick", "mad2d_ick"),
 440         DT_CLK(NULL, "mspro_fck", "mspro_fck"),
 441         DT_CLK(NULL, "dpll2_ck", "dpll2_ck"),
 442         DT_CLK(NULL, "dpll2_m2_ck", "dpll2_m2_ck"),
 443         { .node_name = NULL },
 444 };
 445
 446 static struct ti_dt_clk omap36xx_omap3430es2plus_clks[] = {
 447         DT_CLK(NULL, "ssi_ssr_fck", "ssi_ssr_fck_3430es2"),
 448         DT_CLK(NULL, "ssi_sst_fck", "ssi_sst_fck_3430es2"),
 449         DT_CLK("musb-omap2430", "ick", "hsotgusb_ick_3430es2"),
 450         DT_CLK(NULL, "hsotgusb_ick", "hsotgusb_ick_3430es2"),
 451         DT_CLK(NULL, "ssi_ick", "ssi_ick_3430es2"),
 452         DT_CLK(NULL, "usim_fck", "usim_fck"),
 453         DT_CLK(NULL, "usim_ick", "usim_ick"),
 454         { .node_name = NULL },
 455 };
 456
 457 static struct ti_dt_clk omap3430es1_clks[] = {
 458         DT_CLK(NULL, "gfx_l3_ck", "gfx_l3_ck"),
 459         DT_CLK(NULL, "gfx_l3_fck", "gfx_l3_fck"),
 460         DT_CLK(NULL, "gfx_l3_ick", "gfx_l3_ick"),
 461         DT_CLK(NULL, "gfx_cg1_ck", "gfx_cg1_ck"),
 462         DT_CLK(NULL, "gfx_cg2_ck", "gfx_cg2_ck"),
 463         DT_CLK(NULL, "d2d_26m_fck", "d2d_26m_fck"),
 464         DT_CLK(NULL, "fshostusb_fck", "fshostusb_fck"),
 465         DT_CLK(NULL, "ssi_ssr_fck", "ssi_ssr_fck_3430es1"),
 466         DT_CLK(NULL, "ssi_sst_fck", "ssi_sst_fck_3430es1"),
 467         DT_CLK("musb-omap2430", "ick", "hsotgusb_ick_3430es1"),
 468         DT_CLK(NULL, "hsotgusb_ick", "hsotgusb_ick_3430es1"),
 469         DT_CLK(NULL, "fac_ick", "fac_ick"),
 470         DT_CLK(NULL, "ssi_ick", "ssi_ick_3430es1"),
 471         DT_CLK(NULL, "usb_l4_ick", "usb_l4_ick"),
 472         DT_CLK(NULL, "dss1_alwon_fck", "dss1_alwon_fck_3430es1"),
 473         DT_CLK("omapdss_dss", "ick", "dss_ick_3430es1"),
 474         DT_CLK(NULL, "dss_ick", "dss_ick_3430es1"),
 475         { .node_name = NULL },
 476 };
 477
 478 static struct ti_dt_clk omap36xx_am35xx_omap3430es2plus_clks[] = {
 479         DT_CLK(NULL, "virt_16_8m_ck", "virt_16_8m_ck"),
 480         DT_CLK(NULL, "dpll5_ck", "dpll5_ck"),
 481         DT_CLK(NULL, "dpll5_m2_ck", "dpll5_m2_ck"),
 482         DT_CLK(NULL, "sgx_fck", "sgx_fck"),
 483         DT_CLK(NULL, "sgx_ick", "sgx_ick"),
 484         DT_CLK(NULL, "cpefuse_fck", "cpefuse_fck"),
 485         DT_CLK(NULL, "ts_fck", "ts_fck"),
 486         DT_CLK(NULL, "usbtll_fck", "usbtll_fck"),
 487         DT_CLK(NULL, "usbtll_ick", "usbtll_ick"),
 488         DT_CLK("omap_hsmmc.2", "ick", "mmchs3_ick"),
 489         DT_CLK(NULL, "mmchs3_ick", "mmchs3_ick"),
 490         DT_CLK(NULL, "mmchs3_fck", "mmchs3_fck"),
 491         DT_CLK(NULL, "dss1_alwon_fck", "dss1_alwon_fck_3430es2"),
 492         DT_CLK("omapdss_dss", "ick", "dss_ick_3430es2"),
 493         DT_CLK(NULL, "dss_ick", "dss_ick_3430es2"),
 494         DT_CLK(NULL, "usbhost_120m_fck", "usbhost_120m_fck"),
 495         DT_CLK(NULL, "usbhost_48m_fck", "usbhost_48m_fck"),
 496         DT_CLK(NULL, "usbhost_ick", "usbhost_ick"),
 497         { .node_name = NULL },
 498 };
 499
 500 static struct ti_dt_clk am35xx_clks[] = {
 501         DT_CLK(NULL, "ipss_ick", "ipss_ick"),
 502         DT_CLK(NULL, "rmii_ck", "rmii_ck"),
 503         DT_CLK(NULL, "pclk_ck", "pclk_ck"),
 504         DT_CLK(NULL, "emac_ick", "emac_ick"),
 505         DT_CLK(NULL, "emac_fck", "emac_fck"),
 506         DT_CLK("davinci_emac.0", NULL, "emac_ick"),
 507         DT_CLK("davinci_mdio.0", NULL, "emac_fck"),
 508         DT_CLK("vpfe-capture", "master", "vpfe_ick"),
 509         DT_CLK("vpfe-capture", "slave", "vpfe_fck"),
 510         DT_CLK(NULL, "hsotgusb_ick", "hsotgusb_ick_am35xx"),
 511         DT_CLK(NULL, "hsotgusb_fck", "hsotgusb_fck_am35xx"),
 512         DT_CLK(NULL, "hecc_ck", "hecc_ck"),
 513         DT_CLK(NULL, "uart4_ick", "uart4_ick_am35xx"),
 514         DT_CLK(NULL, "uart4_fck", "uart4_fck_am35xx"),
 515         { .node_name = NULL },
 516 };
 517
 518 static struct ti_dt_clk omap36xx_clks[] = {
 519         DT_CLK(NULL, "omap_192m_alwon_fck", "omap_192m_alwon_fck"),
 520         DT_CLK(NULL, "uart4_fck", "uart4_fck"),
 521         DT_CLK(NULL, "uart4_ick", "uart4_ick"),
 522         { .node_name = NULL },
 523 };
 524
 525 static const char *enable_init_clks[] = {
 526         "sdrc_ick",
 527         "gpmc_fck",
 528         "omapctrl_ick",
 529 };
 530
 531 enum {
 532         OMAP3_SOC_AM35XX,
 533         OMAP3_SOC_OMAP3430_ES1,
 534         OMAP3_SOC_OMAP3430_ES2_PLUS,
 535         OMAP3_SOC_OMAP3630,
 536 };
 537
 538 /**
 539  * omap3_clk_lock_dpll5 - locks DPLL5
 540  *
 541  * Locks DPLL5 to a pre-defined frequency. This is required for proper
 542  * operation of USB.
 543  */
 544 void __init omap3_clk_lock_dpll5(void)
 545 {
 546         struct clk *dpll5_clk;
 547         struct clk *dpll5_m2_clk;
 548
 549         dpll5_clk = clk_get(NULL, "dpll5_ck");
 550         clk_set_rate(dpll5_clk, DPLL5_FREQ_FOR_USBHOST);
 551         clk_prepare_enable(dpll5_clk);
 552
 553         /* Program dpll5_m2_clk divider for no division */
 554         dpll5_m2_clk = clk_get(NULL, "dpll5_m2_ck");
 555         clk_prepare_enable(dpll5_m2_clk);
 556         clk_set_rate(dpll5_m2_clk, DPLL5_FREQ_FOR_USBHOST);
 557
 558         clk_disable_unprepare(dpll5_m2_clk);
 559         clk_disable_unprepare(dpll5_clk);
 560 }
 561
 562 static int __init omap3xxx_dt_clk_init(int soc_type)
 563 {
 564         if (soc_type == OMAP3_SOC_AM35XX || soc_type == OMAP3_SOC_OMAP3630 ||
 565             soc_type == OMAP3_SOC_OMAP3430_ES1 ||
 566             soc_type == OMAP3_SOC_OMAP3430_ES2_PLUS)
 567                 ti_dt_clocks_register(omap3xxx_clks);
 568
 569         if (soc_type == OMAP3_SOC_AM35XX)
 570                 ti_dt_clocks_register(am35xx_clks);
 571
 572         if (soc_type == OMAP3_SOC_OMAP3630 || soc_type == OMAP3_SOC_AM35XX ||
 573             soc_type == OMAP3_SOC_OMAP3430_ES2_PLUS)
 574                 ti_dt_clocks_register(omap36xx_am35xx_omap3430es2plus_clks);
 575
 576         if (soc_type == OMAP3_SOC_OMAP3430_ES1)
 577                 ti_dt_clocks_register(omap3430es1_clks);
 578
 579         if (soc_type == OMAP3_SOC_OMAP3430_ES2_PLUS ||
 580             soc_type == OMAP3_SOC_OMAP3630)
 581                 ti_dt_clocks_register(omap36xx_omap3430es2plus_clks);
 582
 583         if (soc_type == OMAP3_SOC_OMAP3430_ES1 ||
 584             soc_type == OMAP3_SOC_OMAP3430_ES2_PLUS ||
 585             soc_type == OMAP3_SOC_OMAP3630)
 586                 ti_dt_clocks_register(omap34xx_omap36xx_clks);
 587
 588         if (soc_type == OMAP3_SOC_OMAP3630)
 589                 ti_dt_clocks_register(omap36xx_clks);
 590
 591         omap2_clk_disable_autoidle_all();
 592
 593         omap2_clk_enable_init_clocks(enable_init_clks,
 594                                      ARRAY_SIZE(enable_init_clks));
 595
 596         pr_info("Clocking rate (Crystal/Core/MPU): %ld.%01ld/%ld/%ld MHz\n",
 597                 (clk_get_rate(clk_get_sys(NULL, "osc_sys_ck")) / 1000000),
 598                 (clk_get_rate(clk_get_sys(NULL, "osc_sys_ck")) / 100000) % 10,
 599                 (clk_get_rate(clk_get_sys(NULL, "core_ck")) / 1000000),
 600                 (clk_get_rate(clk_get_sys(NULL, "arm_fck")) / 1000000));
 601
 602         if (soc_type != OMAP3_SOC_OMAP3430_ES1)
 603                 omap3_clk_lock_dpll5();
 604
 605         return 0;
 606 }
 607
 608 int __init omap3430_dt_clk_init(void)
 609 {
 610         return omap3xxx_dt_clk_init(OMAP3_SOC_OMAP3430_ES2_PLUS);
 611 }
 612
 613 int __init omap3630_dt_clk_init(void)
 614 {
 615         return omap3xxx_dt_clk_init(OMAP3_SOC_OMAP3630);
 616 }
 617
 618 int __init am35xx_dt_clk_init(void)
 619 {
 620         return omap3xxx_dt_clk_init(OMAP3_SOC_AM35XX);
 621 }