drivers/clk/clk-stm32f4.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Author: Daniel Thompson <daniel.thompson@linaro.org>
   4  *
   5  * Inspired by clk-asm9260.c .
   6  */
   7
   8 #include <linux/clk-provider.h>
   9 #include <linux/err.h>
  10 #include <linux/io.h>
  11 #include <linux/iopoll.h>
  12 #include <linux/ioport.h>
  13 #include <linux/slab.h>
  14 #include <linux/spinlock.h>
  15 #include <linux/of.h>
  16 #include <linux/of_address.h>
  17 #include <linux/regmap.h>
  18 #include <linux/mfd/syscon.h>
  19
  20 /*
  21  * Include list of clocks wich are not derived from system clock (SYSCLOCK)
  22  * The index of these clocks is the secondary index of DT bindings
  23  *
  24  */
  25 #include <dt-bindings/clock/stm32fx-clock.h>
  26
  27 #define STM32F4_RCC_CR                  0x00
  28 #define STM32F4_RCC_PLLCFGR             0x04
  29 #define STM32F4_RCC_CFGR                0x08
  30 #define STM32F4_RCC_AHB1ENR             0x30
  31 #define STM32F4_RCC_AHB2ENR             0x34
  32 #define STM32F4_RCC_AHB3ENR             0x38
  33 #define STM32F4_RCC_APB1ENR             0x40
  34 #define STM32F4_RCC_APB2ENR             0x44
  35 #define STM32F4_RCC_BDCR                0x70
  36 #define STM32F4_RCC_CSR                 0x74
  37 #define STM32F4_RCC_PLLI2SCFGR          0x84
  38 #define STM32F4_RCC_PLLSAICFGR          0x88
  39 #define STM32F4_RCC_DCKCFGR             0x8c
  40 #define STM32F7_RCC_DCKCFGR2            0x90
  41
  42 #define NONE -1
  43 #define NO_IDX  NONE
  44 #define NO_MUX  NONE
  45 #define NO_GATE NONE
  46
  47 struct stm32f4_gate_data {
  48         u8      offset;
  49         u8      bit_idx;
  50         const char *name;
  51         const char *parent_name;
  52         unsigned long flags;
  53 };
  54
  55 static const struct stm32f4_gate_data stm32f429_gates[] __initconst = {
  56         { STM32F4_RCC_AHB1ENR,  0,      "gpioa",        "ahb_div" },
  57         { STM32F4_RCC_AHB1ENR,  1,      "gpiob",        "ahb_div" },
  58         { STM32F4_RCC_AHB1ENR,  2,      "gpioc",        "ahb_div" },
  59         { STM32F4_RCC_AHB1ENR,  3,      "gpiod",        "ahb_div" },
  60         { STM32F4_RCC_AHB1ENR,  4,      "gpioe",        "ahb_div" },
  61         { STM32F4_RCC_AHB1ENR,  5,      "gpiof",        "ahb_div" },
  62         { STM32F4_RCC_AHB1ENR,  6,      "gpiog",        "ahb_div" },
  63         { STM32F4_RCC_AHB1ENR,  7,      "gpioh",        "ahb_div" },
  64         { STM32F4_RCC_AHB1ENR,  8,      "gpioi",        "ahb_div" },
  65         { STM32F4_RCC_AHB1ENR,  9,      "gpioj",        "ahb_div" },
  66         { STM32F4_RCC_AHB1ENR, 10,      "gpiok",        "ahb_div" },
  67         { STM32F4_RCC_AHB1ENR, 12,      "crc",          "ahb_div" },
  68         { STM32F4_RCC_AHB1ENR, 18,      "bkpsra",       "ahb_div" },
  69         { STM32F4_RCC_AHB1ENR, 20,      "ccmdatam",     "ahb_div" },
  70         { STM32F4_RCC_AHB1ENR, 21,      "dma1",         "ahb_div" },
  71         { STM32F4_RCC_AHB1ENR, 22,      "dma2",         "ahb_div" },
  72         { STM32F4_RCC_AHB1ENR, 23,      "dma2d",        "ahb_div" },
  73         { STM32F4_RCC_AHB1ENR, 25,      "ethmac",       "ahb_div" },
  74         { STM32F4_RCC_AHB1ENR, 26,      "ethmactx",     "ahb_div" },
  75         { STM32F4_RCC_AHB1ENR, 27,      "ethmacrx",     "ahb_div" },
  76         { STM32F4_RCC_AHB1ENR, 28,      "ethmacptp",    "ahb_div" },
  77         { STM32F4_RCC_AHB1ENR, 29,      "otghs",        "ahb_div" },
  78         { STM32F4_RCC_AHB1ENR, 30,      "otghsulpi",    "ahb_div" },
  79
  80         { STM32F4_RCC_AHB2ENR,  0,      "dcmi",         "ahb_div" },
  81         { STM32F4_RCC_AHB2ENR,  4,      "cryp",         "ahb_div" },
  82         { STM32F4_RCC_AHB2ENR,  5,      "hash",         "ahb_div" },
  83         { STM32F4_RCC_AHB2ENR,  6,      "rng",          "pll48" },
  84         { STM32F4_RCC_AHB2ENR,  7,      "otgfs",        "pll48" },
  85
  86         { STM32F4_RCC_AHB3ENR,  0,      "fmc",          "ahb_div",
  87                 CLK_IGNORE_UNUSED },
  88
  89         { STM32F4_RCC_APB1ENR,  0,      "tim2",         "apb1_mul" },
  90         { STM32F4_RCC_APB1ENR,  1,      "tim3",         "apb1_mul" },
  91         { STM32F4_RCC_APB1ENR,  2,      "tim4",         "apb1_mul" },
  92         { STM32F4_RCC_APB1ENR,  3,      "tim5",         "apb1_mul" },
  93         { STM32F4_RCC_APB1ENR,  4,      "tim6",         "apb1_mul" },
  94         { STM32F4_RCC_APB1ENR,  5,      "tim7",         "apb1_mul" },
  95         { STM32F4_RCC_APB1ENR,  6,      "tim12",        "apb1_mul" },
  96         { STM32F4_RCC_APB1ENR,  7,      "tim13",        "apb1_mul" },
  97         { STM32F4_RCC_APB1ENR,  8,      "tim14",        "apb1_mul" },
  98         { STM32F4_RCC_APB1ENR, 11,      "wwdg",         "apb1_div" },
  99         { STM32F4_RCC_APB1ENR, 14,      "spi2",         "apb1_div" },
 100         { STM32F4_RCC_APB1ENR, 15,      "spi3",         "apb1_div" },
 101         { STM32F4_RCC_APB1ENR, 17,      "uart2",        "apb1_div" },
 102         { STM32F4_RCC_APB1ENR, 18,      "uart3",        "apb1_div" },
 103         { STM32F4_RCC_APB1ENR, 19,      "uart4",        "apb1_div" },
 104         { STM32F4_RCC_APB1ENR, 20,      "uart5",        "apb1_div" },
 105         { STM32F4_RCC_APB1ENR, 21,      "i2c1",         "apb1_div" },
 106         { STM32F4_RCC_APB1ENR, 22,      "i2c2",         "apb1_div" },
 107         { STM32F4_RCC_APB1ENR, 23,      "i2c3",         "apb1_div" },
 108         { STM32F4_RCC_APB1ENR, 25,      "can1",         "apb1_div" },
 109         { STM32F4_RCC_APB1ENR, 26,      "can2",         "apb1_div" },
 110         { STM32F4_RCC_APB1ENR, 28,      "pwr",          "apb1_div" },
 111         { STM32F4_RCC_APB1ENR, 29,      "dac",          "apb1_div" },
 112         { STM32F4_RCC_APB1ENR, 30,      "uart7",        "apb1_div" },
 113         { STM32F4_RCC_APB1ENR, 31,      "uart8",        "apb1_div" },
 114
 115         { STM32F4_RCC_APB2ENR,  0,      "tim1",         "apb2_mul" },
 116         { STM32F4_RCC_APB2ENR,  1,      "tim8",         "apb2_mul" },
 117         { STM32F4_RCC_APB2ENR,  4,      "usart1",       "apb2_div" },
 118         { STM32F4_RCC_APB2ENR,  5,      "usart6",       "apb2_div" },
 119         { STM32F4_RCC_APB2ENR,  8,      "adc1",         "apb2_div" },
 120         { STM32F4_RCC_APB2ENR,  9,      "adc2",         "apb2_div" },
 121         { STM32F4_RCC_APB2ENR, 10,      "adc3",         "apb2_div" },
 122         { STM32F4_RCC_APB2ENR, 11,      "sdio",         "pll48" },
 123         { STM32F4_RCC_APB2ENR, 12,      "spi1",         "apb2_div" },
 124         { STM32F4_RCC_APB2ENR, 13,      "spi4",         "apb2_div" },
 125         { STM32F4_RCC_APB2ENR, 14,      "syscfg",       "apb2_div" },
 126         { STM32F4_RCC_APB2ENR, 16,      "tim9",         "apb2_mul" },
 127         { STM32F4_RCC_APB2ENR, 17,      "tim10",        "apb2_mul" },
 128         { STM32F4_RCC_APB2ENR, 18,      "tim11",        "apb2_mul" },
 129         { STM32F4_RCC_APB2ENR, 20,      "spi5",         "apb2_div" },
 130         { STM32F4_RCC_APB2ENR, 21,      "spi6",         "apb2_div" },
 131         { STM32F4_RCC_APB2ENR, 22,      "sai1",         "apb2_div" },
 132 };
 133
 134 static const struct stm32f4_gate_data stm32f469_gates[] __initconst = {
 135         { STM32F4_RCC_AHB1ENR,  0,      "gpioa",        "ahb_div" },
 136         { STM32F4_RCC_AHB1ENR,  1,      "gpiob",        "ahb_div" },
 137         { STM32F4_RCC_AHB1ENR,  2,      "gpioc",        "ahb_div" },
 138         { STM32F4_RCC_AHB1ENR,  3,      "gpiod",        "ahb_div" },
 139         { STM32F4_RCC_AHB1ENR,  4,      "gpioe",        "ahb_div" },
 140         { STM32F4_RCC_AHB1ENR,  5,      "gpiof",        "ahb_div" },
 141         { STM32F4_RCC_AHB1ENR,  6,      "gpiog",        "ahb_div" },
 142         { STM32F4_RCC_AHB1ENR,  7,      "gpioh",        "ahb_div" },
 143         { STM32F4_RCC_AHB1ENR,  8,      "gpioi",        "ahb_div" },
 144         { STM32F4_RCC_AHB1ENR,  9,      "gpioj",        "ahb_div" },
 145         { STM32F4_RCC_AHB1ENR, 10,      "gpiok",        "ahb_div" },
 146         { STM32F4_RCC_AHB1ENR, 12,      "crc",          "ahb_div" },
 147         { STM32F4_RCC_AHB1ENR, 18,      "bkpsra",       "ahb_div" },
 148         { STM32F4_RCC_AHB1ENR, 20,      "ccmdatam",     "ahb_div" },
 149         { STM32F4_RCC_AHB1ENR, 21,      "dma1",         "ahb_div" },
 150         { STM32F4_RCC_AHB1ENR, 22,      "dma2",         "ahb_div" },
 151         { STM32F4_RCC_AHB1ENR, 23,      "dma2d",        "ahb_div" },
 152         { STM32F4_RCC_AHB1ENR, 25,      "ethmac",       "ahb_div" },
 153         { STM32F4_RCC_AHB1ENR, 26,      "ethmactx",     "ahb_div" },
 154         { STM32F4_RCC_AHB1ENR, 27,      "ethmacrx",     "ahb_div" },
 155         { STM32F4_RCC_AHB1ENR, 28,      "ethmacptp",    "ahb_div" },
 156         { STM32F4_RCC_AHB1ENR, 29,      "otghs",        "ahb_div" },
 157         { STM32F4_RCC_AHB1ENR, 30,      "otghsulpi",    "ahb_div" },
 158
 159         { STM32F4_RCC_AHB2ENR,  0,      "dcmi",         "ahb_div" },
 160         { STM32F4_RCC_AHB2ENR,  4,      "cryp",         "ahb_div" },
 161         { STM32F4_RCC_AHB2ENR,  5,      "hash",         "ahb_div" },
 162         { STM32F4_RCC_AHB2ENR,  6,      "rng",          "pll48" },
 163         { STM32F4_RCC_AHB2ENR,  7,      "otgfs",        "pll48" },
 164
 165         { STM32F4_RCC_AHB3ENR,  0,      "fmc",          "ahb_div",
 166                 CLK_IGNORE_UNUSED },
 167         { STM32F4_RCC_AHB3ENR,  1,      "qspi",         "ahb_div",
 168                 CLK_IGNORE_UNUSED },
 169
 170         { STM32F4_RCC_APB1ENR,  0,      "tim2",         "apb1_mul" },
 171         { STM32F4_RCC_APB1ENR,  1,      "tim3",         "apb1_mul" },
 172         { STM32F4_RCC_APB1ENR,  2,      "tim4",         "apb1_mul" },
 173         { STM32F4_RCC_APB1ENR,  3,      "tim5",         "apb1_mul" },
 174         { STM32F4_RCC_APB1ENR,  4,      "tim6",         "apb1_mul" },
 175         { STM32F4_RCC_APB1ENR,  5,      "tim7",         "apb1_mul" },
 176         { STM32F4_RCC_APB1ENR,  6,      "tim12",        "apb1_mul" },
 177         { STM32F4_RCC_APB1ENR,  7,      "tim13",        "apb1_mul" },
 178         { STM32F4_RCC_APB1ENR,  8,      "tim14",        "apb1_mul" },
 179         { STM32F4_RCC_APB1ENR, 11,      "wwdg",         "apb1_div" },
 180         { STM32F4_RCC_APB1ENR, 14,      "spi2",         "apb1_div" },
 181         { STM32F4_RCC_APB1ENR, 15,      "spi3",         "apb1_div" },
 182         { STM32F4_RCC_APB1ENR, 17,      "uart2",        "apb1_div" },
 183         { STM32F4_RCC_APB1ENR, 18,      "uart3",        "apb1_div" },
 184         { STM32F4_RCC_APB1ENR, 19,      "uart4",        "apb1_div" },
 185         { STM32F4_RCC_APB1ENR, 20,      "uart5",        "apb1_div" },
 186         { STM32F4_RCC_APB1ENR, 21,      "i2c1",         "apb1_div" },
 187         { STM32F4_RCC_APB1ENR, 22,      "i2c2",         "apb1_div" },
 188         { STM32F4_RCC_APB1ENR, 23,      "i2c3",         "apb1_div" },
 189         { STM32F4_RCC_APB1ENR, 25,      "can1",         "apb1_div" },
 190         { STM32F4_RCC_APB1ENR, 26,      "can2",         "apb1_div" },
 191         { STM32F4_RCC_APB1ENR, 28,      "pwr",          "apb1_div" },
 192         { STM32F4_RCC_APB1ENR, 29,      "dac",          "apb1_div" },
 193         { STM32F4_RCC_APB1ENR, 30,      "uart7",        "apb1_div" },
 194         { STM32F4_RCC_APB1ENR, 31,      "uart8",        "apb1_div" },
 195
 196         { STM32F4_RCC_APB2ENR,  0,      "tim1",         "apb2_mul" },
 197         { STM32F4_RCC_APB2ENR,  1,      "tim8",         "apb2_mul" },
 198         { STM32F4_RCC_APB2ENR,  4,      "usart1",       "apb2_div" },
 199         { STM32F4_RCC_APB2ENR,  5,      "usart6",       "apb2_div" },
 200         { STM32F4_RCC_APB2ENR,  8,      "adc1",         "apb2_div" },
 201         { STM32F4_RCC_APB2ENR,  9,      "adc2",         "apb2_div" },
 202         { STM32F4_RCC_APB2ENR, 10,      "adc3",         "apb2_div" },
 203         { STM32F4_RCC_APB2ENR, 11,      "sdio",         "sdmux" },
 204         { STM32F4_RCC_APB2ENR, 12,      "spi1",         "apb2_div" },
 205         { STM32F4_RCC_APB2ENR, 13,      "spi4",         "apb2_div" },
 206         { STM32F4_RCC_APB2ENR, 14,      "syscfg",       "apb2_div" },
 207         { STM32F4_RCC_APB2ENR, 16,      "tim9",         "apb2_mul" },
 208         { STM32F4_RCC_APB2ENR, 17,      "tim10",        "apb2_mul" },
 209         { STM32F4_RCC_APB2ENR, 18,      "tim11",        "apb2_mul" },
 210         { STM32F4_RCC_APB2ENR, 20,      "spi5",         "apb2_div" },
 211         { STM32F4_RCC_APB2ENR, 21,      "spi6",         "apb2_div" },
 212         { STM32F4_RCC_APB2ENR, 22,      "sai1",         "apb2_div" },
 213 };
 214
 215 static const struct stm32f4_gate_data stm32f746_gates[] __initconst = {
 216         { STM32F4_RCC_AHB1ENR,  0,      "gpioa",        "ahb_div" },
 217         { STM32F4_RCC_AHB1ENR,  1,      "gpiob",        "ahb_div" },
 218         { STM32F4_RCC_AHB1ENR,  2,      "gpioc",        "ahb_div" },
 219         { STM32F4_RCC_AHB1ENR,  3,      "gpiod",        "ahb_div" },
 220         { STM32F4_RCC_AHB1ENR,  4,      "gpioe",        "ahb_div" },
 221         { STM32F4_RCC_AHB1ENR,  5,      "gpiof",        "ahb_div" },
 222         { STM32F4_RCC_AHB1ENR,  6,      "gpiog",        "ahb_div" },
 223         { STM32F4_RCC_AHB1ENR,  7,      "gpioh",        "ahb_div" },
 224         { STM32F4_RCC_AHB1ENR,  8,      "gpioi",        "ahb_div" },
 225         { STM32F4_RCC_AHB1ENR,  9,      "gpioj",        "ahb_div" },
 226         { STM32F4_RCC_AHB1ENR, 10,      "gpiok",        "ahb_div" },
 227         { STM32F4_RCC_AHB1ENR, 12,      "crc",          "ahb_div" },
 228         { STM32F4_RCC_AHB1ENR, 18,      "bkpsra",       "ahb_div" },
 229         { STM32F4_RCC_AHB1ENR, 20,      "dtcmram",      "ahb_div" },
 230         { STM32F4_RCC_AHB1ENR, 21,      "dma1",         "ahb_div" },
 231         { STM32F4_RCC_AHB1ENR, 22,      "dma2",         "ahb_div" },
 232         { STM32F4_RCC_AHB1ENR, 23,      "dma2d",        "ahb_div" },
 233         { STM32F4_RCC_AHB1ENR, 25,      "ethmac",       "ahb_div" },
 234         { STM32F4_RCC_AHB1ENR, 26,      "ethmactx",     "ahb_div" },
 235         { STM32F4_RCC_AHB1ENR, 27,      "ethmacrx",     "ahb_div" },
 236         { STM32F4_RCC_AHB1ENR, 28,      "ethmacptp",    "ahb_div" },
 237         { STM32F4_RCC_AHB1ENR, 29,      "otghs",        "ahb_div" },
 238         { STM32F4_RCC_AHB1ENR, 30,      "otghsulpi",    "ahb_div" },
 239
 240         { STM32F4_RCC_AHB2ENR,  0,      "dcmi",         "ahb_div" },
 241         { STM32F4_RCC_AHB2ENR,  4,      "cryp",         "ahb_div" },
 242         { STM32F4_RCC_AHB2ENR,  5,      "hash",         "ahb_div" },
 243         { STM32F4_RCC_AHB2ENR,  6,      "rng",          "pll48"   },
 244         { STM32F4_RCC_AHB2ENR,  7,      "otgfs",        "pll48"   },
 245
 246         { STM32F4_RCC_AHB3ENR,  0,      "fmc",          "ahb_div",
 247                 CLK_IGNORE_UNUSED },
 248         { STM32F4_RCC_AHB3ENR,  1,      "qspi",         "ahb_div",
 249                 CLK_IGNORE_UNUSED },
 250
 251         { STM32F4_RCC_APB1ENR,  0,      "tim2",         "apb1_mul" },
 252         { STM32F4_RCC_APB1ENR,  1,      "tim3",         "apb1_mul" },
 253         { STM32F4_RCC_APB1ENR,  2,      "tim4",         "apb1_mul" },
 254         { STM32F4_RCC_APB1ENR,  3,      "tim5",         "apb1_mul" },
 255         { STM32F4_RCC_APB1ENR,  4,      "tim6",         "apb1_mul" },
 256         { STM32F4_RCC_APB1ENR,  5,      "tim7",         "apb1_mul" },
 257         { STM32F4_RCC_APB1ENR,  6,      "tim12",        "apb1_mul" },
 258         { STM32F4_RCC_APB1ENR,  7,      "tim13",        "apb1_mul" },
 259         { STM32F4_RCC_APB1ENR,  8,      "tim14",        "apb1_mul" },
 260         { STM32F4_RCC_APB1ENR, 11,      "wwdg",         "apb1_div" },
 261         { STM32F4_RCC_APB1ENR, 14,      "spi2",         "apb1_div" },
 262         { STM32F4_RCC_APB1ENR, 15,      "spi3",         "apb1_div" },
 263         { STM32F4_RCC_APB1ENR, 16,      "spdifrx",      "apb1_div" },
 264         { STM32F4_RCC_APB1ENR, 25,      "can1",         "apb1_div" },
 265         { STM32F4_RCC_APB1ENR, 26,      "can2",         "apb1_div" },
 266         { STM32F4_RCC_APB1ENR, 27,      "cec",          "apb1_div" },
 267         { STM32F4_RCC_APB1ENR, 28,      "pwr",          "apb1_div" },
 268         { STM32F4_RCC_APB1ENR, 29,      "dac",          "apb1_div" },
 269
 270         { STM32F4_RCC_APB2ENR,  0,      "tim1",         "apb2_mul" },
 271         { STM32F4_RCC_APB2ENR,  1,      "tim8",         "apb2_mul" },
 272         { STM32F4_RCC_APB2ENR,  7,      "sdmmc2",       "sdmux"    },
 273         { STM32F4_RCC_APB2ENR,  8,      "adc1",         "apb2_div" },
 274         { STM32F4_RCC_APB2ENR,  9,      "adc2",         "apb2_div" },
 275         { STM32F4_RCC_APB2ENR, 10,      "adc3",         "apb2_div" },
 276         { STM32F4_RCC_APB2ENR, 11,      "sdmmc",        "sdmux"    },
 277         { STM32F4_RCC_APB2ENR, 12,      "spi1",         "apb2_div" },
 278         { STM32F4_RCC_APB2ENR, 13,      "spi4",         "apb2_div" },
 279         { STM32F4_RCC_APB2ENR, 14,      "syscfg",       "apb2_div" },
 280         { STM32F4_RCC_APB2ENR, 16,      "tim9",         "apb2_mul" },
 281         { STM32F4_RCC_APB2ENR, 17,      "tim10",        "apb2_mul" },
 282         { STM32F4_RCC_APB2ENR, 18,      "tim11",        "apb2_mul" },
 283         { STM32F4_RCC_APB2ENR, 20,      "spi5",         "apb2_div" },
 284         { STM32F4_RCC_APB2ENR, 21,      "spi6",         "apb2_div" },
 285         { STM32F4_RCC_APB2ENR, 22,      "sai1",         "apb2_div" },
 286         { STM32F4_RCC_APB2ENR, 23,      "sai2",         "apb2_div" },
 287 };
 288
 289 static const struct stm32f4_gate_data stm32f769_gates[] __initconst = {
 290         { STM32F4_RCC_AHB1ENR,  0,      "gpioa",        "ahb_div" },
 291         { STM32F4_RCC_AHB1ENR,  1,      "gpiob",        "ahb_div" },
 292         { STM32F4_RCC_AHB1ENR,  2,      "gpioc",        "ahb_div" },
 293         { STM32F4_RCC_AHB1ENR,  3,      "gpiod",        "ahb_div" },
 294         { STM32F4_RCC_AHB1ENR,  4,      "gpioe",        "ahb_div" },
 295         { STM32F4_RCC_AHB1ENR,  5,      "gpiof",        "ahb_div" },
 296         { STM32F4_RCC_AHB1ENR,  6,      "gpiog",        "ahb_div" },
 297         { STM32F4_RCC_AHB1ENR,  7,      "gpioh",        "ahb_div" },
 298         { STM32F4_RCC_AHB1ENR,  8,      "gpioi",        "ahb_div" },
 299         { STM32F4_RCC_AHB1ENR,  9,      "gpioj",        "ahb_div" },
 300         { STM32F4_RCC_AHB1ENR, 10,      "gpiok",        "ahb_div" },
 301         { STM32F4_RCC_AHB1ENR, 12,      "crc",          "ahb_div" },
 302         { STM32F4_RCC_AHB1ENR, 18,      "bkpsra",       "ahb_div" },
 303         { STM32F4_RCC_AHB1ENR, 20,      "dtcmram",      "ahb_div" },
 304         { STM32F4_RCC_AHB1ENR, 21,      "dma1",         "ahb_div" },
 305         { STM32F4_RCC_AHB1ENR, 22,      "dma2",         "ahb_div" },
 306         { STM32F4_RCC_AHB1ENR, 23,      "dma2d",        "ahb_div" },
 307         { STM32F4_RCC_AHB1ENR, 25,      "ethmac",       "ahb_div" },
 308         { STM32F4_RCC_AHB1ENR, 26,      "ethmactx",     "ahb_div" },
 309         { STM32F4_RCC_AHB1ENR, 27,      "ethmacrx",     "ahb_div" },
 310         { STM32F4_RCC_AHB1ENR, 28,      "ethmacptp",    "ahb_div" },
 311         { STM32F4_RCC_AHB1ENR, 29,      "otghs",        "ahb_div" },
 312         { STM32F4_RCC_AHB1ENR, 30,      "otghsulpi",    "ahb_div" },
 313
 314         { STM32F4_RCC_AHB2ENR,  0,      "dcmi",         "ahb_div" },
 315         { STM32F4_RCC_AHB2ENR,  1,      "jpeg",         "ahb_div" },
 316         { STM32F4_RCC_AHB2ENR,  4,      "cryp",         "ahb_div" },
 317         { STM32F4_RCC_AHB2ENR,  5,      "hash",         "ahb_div" },
 318         { STM32F4_RCC_AHB2ENR,  6,      "rng",          "pll48"   },
 319         { STM32F4_RCC_AHB2ENR,  7,      "otgfs",        "pll48"   },
 320
 321         { STM32F4_RCC_AHB3ENR,  0,      "fmc",          "ahb_div",
 322                 CLK_IGNORE_UNUSED },
 323         { STM32F4_RCC_AHB3ENR,  1,      "qspi",         "ahb_div",
 324                 CLK_IGNORE_UNUSED },
 325
 326         { STM32F4_RCC_APB1ENR,  0,      "tim2",         "apb1_mul" },
 327         { STM32F4_RCC_APB1ENR,  1,      "tim3",         "apb1_mul" },
 328         { STM32F4_RCC_APB1ENR,  2,      "tim4",         "apb1_mul" },
 329         { STM32F4_RCC_APB1ENR,  3,      "tim5",         "apb1_mul" },
 330         { STM32F4_RCC_APB1ENR,  4,      "tim6",         "apb1_mul" },
 331         { STM32F4_RCC_APB1ENR,  5,      "tim7",         "apb1_mul" },
 332         { STM32F4_RCC_APB1ENR,  6,      "tim12",        "apb1_mul" },
 333         { STM32F4_RCC_APB1ENR,  7,      "tim13",        "apb1_mul" },
 334         { STM32F4_RCC_APB1ENR,  8,      "tim14",        "apb1_mul" },
 335         { STM32F4_RCC_APB1ENR, 10,      "rtcapb",       "apb1_mul" },
 336         { STM32F4_RCC_APB1ENR, 11,      "wwdg",         "apb1_div" },
 337         { STM32F4_RCC_APB1ENR, 13,      "can3",         "apb1_div" },
 338         { STM32F4_RCC_APB1ENR, 14,      "spi2",         "apb1_div" },
 339         { STM32F4_RCC_APB1ENR, 15,      "spi3",         "apb1_div" },
 340         { STM32F4_RCC_APB1ENR, 16,      "spdifrx",      "apb1_div" },
 341         { STM32F4_RCC_APB1ENR, 25,      "can1",         "apb1_div" },
 342         { STM32F4_RCC_APB1ENR, 26,      "can2",         "apb1_div" },
 343         { STM32F4_RCC_APB1ENR, 27,      "cec",          "apb1_div" },
 344         { STM32F4_RCC_APB1ENR, 28,      "pwr",          "apb1_div" },
 345         { STM32F4_RCC_APB1ENR, 29,      "dac",          "apb1_div" },
 346
 347         { STM32F4_RCC_APB2ENR,  0,      "tim1",         "apb2_mul" },
 348         { STM32F4_RCC_APB2ENR,  1,      "tim8",         "apb2_mul" },
 349         { STM32F4_RCC_APB2ENR,  7,      "sdmmc2",       "sdmux2" },
 350         { STM32F4_RCC_APB2ENR,  8,      "adc1",         "apb2_div" },
 351         { STM32F4_RCC_APB2ENR,  9,      "adc2",         "apb2_div" },
 352         { STM32F4_RCC_APB2ENR, 10,      "adc3",         "apb2_div" },
 353         { STM32F4_RCC_APB2ENR, 11,      "sdmmc1",       "sdmux1" },
 354         { STM32F4_RCC_APB2ENR, 12,      "spi1",         "apb2_div" },
 355         { STM32F4_RCC_APB2ENR, 13,      "spi4",         "apb2_div" },
 356         { STM32F4_RCC_APB2ENR, 14,      "syscfg",       "apb2_div" },
 357         { STM32F4_RCC_APB2ENR, 16,      "tim9",         "apb2_mul" },
 358         { STM32F4_RCC_APB2ENR, 17,      "tim10",        "apb2_mul" },
 359         { STM32F4_RCC_APB2ENR, 18,      "tim11",        "apb2_mul" },
 360         { STM32F4_RCC_APB2ENR, 20,      "spi5",         "apb2_div" },
 361         { STM32F4_RCC_APB2ENR, 21,      "spi6",         "apb2_div" },
 362         { STM32F4_RCC_APB2ENR, 22,      "sai1",         "apb2_div" },
 363         { STM32F4_RCC_APB2ENR, 23,      "sai2",         "apb2_div" },
 364         { STM32F4_RCC_APB2ENR, 30,      "mdio",         "apb2_div" },
 365 };
 366
 367 /*
 368  * This bitmask tells us which bit offsets (0..192) on STM32F4[23]xxx
 369  * have gate bits associated with them. Its combined hweight is 71.
 370  */
 371 #define MAX_GATE_MAP 3
 372
 373 static const u64 stm32f42xx_gate_map[MAX_GATE_MAP] = { 0x000000f17ef417ffull,
 374                                                        0x0000000000000001ull,
 375                                                        0x04777f33f6fec9ffull };
 376
 377 static const u64 stm32f46xx_gate_map[MAX_GATE_MAP] = { 0x000000f17ef417ffull,
 378                                                        0x0000000000000003ull,
 379                                                        0x0c777f33f6fec9ffull };
 380
 381 static const u64 stm32f746_gate_map[MAX_GATE_MAP] = { 0x000000f17ef417ffull,
 382                                                       0x0000000000000003ull,
 383                                                       0x04f77f833e01c9ffull };
 384
 385 static const u64 stm32f769_gate_map[MAX_GATE_MAP] = { 0x000000f37ef417ffull,
 386                                                       0x0000000000000003ull,
 387                                                       0x44F77F833E01EDFFull };
 388
 389 static const u64 *stm32f4_gate_map;
 390
 391 static struct clk_hw **clks;
 392
 393 static DEFINE_SPINLOCK(stm32f4_clk_lock);
 394 static void __iomem *base;
 395
 396 static struct regmap *pdrm;
 397
 398 static int stm32fx_end_primary_clk;
 399
 400 /*
 401  * "Multiplier" device for APBx clocks.
 402  *
 403  * The APBx dividers are power-of-two dividers and, if *not* running in 1:1
 404  * mode, they also tap out the one of the low order state bits to run the
 405  * timers. ST datasheets represent this feature as a (conditional) clock
 406  * multiplier.
 407  */
 408 struct clk_apb_mul {
 409         struct clk_hw hw;
 410         u8 bit_idx;
 411 };
 412
 413 #define to_clk_apb_mul(_hw) container_of(_hw, struct clk_apb_mul, hw)
 414
 415 static unsigned long clk_apb_mul_recalc_rate(struct clk_hw *hw,
 416                                              unsigned long parent_rate)
 417 {
 418         struct clk_apb_mul *am = to_clk_apb_mul(hw);
 419
 420         if (readl(base + STM32F4_RCC_CFGR) & BIT(am->bit_idx))
 421                 return parent_rate * 2;
 422
 423         return parent_rate;
 424 }
 425
 426 static long clk_apb_mul_round_rate(struct clk_hw *hw, unsigned long rate,
 427                                    unsigned long *prate)
 428 {
 429         struct clk_apb_mul *am = to_clk_apb_mul(hw);
 430         unsigned long mult = 1;
 431
 432         if (readl(base + STM32F4_RCC_CFGR) & BIT(am->bit_idx))
 433                 mult = 2;
 434
 435         if (clk_hw_get_flags(hw) & CLK_SET_RATE_PARENT) {
 436                 unsigned long best_parent = rate / mult;
 437
 438                 *prate = clk_hw_round_rate(clk_hw_get_parent(hw), best_parent);
 439         }
 440
 441         return *prate * mult;
 442 }
 443
 444 static int clk_apb_mul_set_rate(struct clk_hw *hw, unsigned long rate,
 445                                 unsigned long parent_rate)
 446 {
 447         /*
 448          * We must report success but we can do so unconditionally because
 449          * clk_apb_mul_round_rate returns values that ensure this call is a
 450          * nop.
 451          */
 452
 453         return 0;
 454 }
 455
 456 static const struct clk_ops clk_apb_mul_factor_ops = {
 457         .round_rate = clk_apb_mul_round_rate,
 458         .set_rate = clk_apb_mul_set_rate,
 459         .recalc_rate = clk_apb_mul_recalc_rate,
 460 };
 461
 462 static struct clk *clk_register_apb_mul(struct device *dev, const char *name,
 463                                         const char *parent_name,
 464                                         unsigned long flags, u8 bit_idx)
 465 {
 466         struct clk_apb_mul *am;
 467         struct clk_init_data init;
 468         struct clk *clk;
 469
 470         am = kzalloc(sizeof(*am), GFP_KERNEL);
 471         if (!am)
 472                 return ERR_PTR(-ENOMEM);
 473
 474         am->bit_idx = bit_idx;
 475         am->hw.init = &init;
 476
 477         init.name = name;
 478         init.ops = &clk_apb_mul_factor_ops;
 479         init.flags = flags;
 480         init.parent_names = &parent_name;
 481         init.num_parents = 1;
 482
 483         clk = clk_register(dev, &am->hw);
 484
 485         if (IS_ERR(clk))
 486                 kfree(am);
 487
 488         return clk;
 489 }
 490
 491 enum {
 492         PLL,
 493         PLL_I2S,
 494         PLL_SAI,
 495 };
 496
 497 static const struct clk_div_table pll_divp_table[] = {
 498         { 0, 2 }, { 1, 4 }, { 2, 6 }, { 3, 8 }, { 0 }
 499 };
 500
 501 static const struct clk_div_table pll_divq_table[] = {
 502         { 2, 2 }, { 3, 3 }, { 4, 4 }, { 5, 5 }, { 6, 6 }, { 7, 7 },
 503         { 8, 8 }, { 9, 9 }, { 10, 10 }, { 11, 11 }, { 12, 12 }, { 13, 13 },
 504         { 14, 14 }, { 15, 15 },
 505         { 0 }
 506 };
 507
 508 static const struct clk_div_table pll_divr_table[] = {
 509         { 2, 2 }, { 3, 3 }, { 4, 4 }, { 5, 5 }, { 6, 6 }, { 7, 7 }, { 0 }
 510 };
 511
 512 struct stm32f4_pll {
 513         spinlock_t *lock;
 514         struct  clk_gate gate;
 515         u8 offset;
 516         u8 bit_rdy_idx;
 517         u8 status;
 518         u8 n_start;
 519 };
 520
 521 #define to_stm32f4_pll(_gate) container_of(_gate, struct stm32f4_pll, gate)
 522
 523 struct stm32f4_pll_post_div_data {
 524         int idx;
 525         int pll_idx;
 526         const char *name;
 527         const char *parent;
 528         u8 flag;
 529         u8 offset;
 530         u8 shift;
 531         u8 width;
 532         u8 flag_div;
 533         const struct clk_div_table *div_table;
 534 };
 535
 536 struct stm32f4_vco_data {
 537         const char *vco_name;
 538         u8 offset;
 539         u8 bit_idx;
 540         u8 bit_rdy_idx;
 541 };
 542
 543 static const struct stm32f4_vco_data  vco_data[] = {
 544         { "vco",     STM32F4_RCC_PLLCFGR,    24, 25 },
 545         { "vco-i2s", STM32F4_RCC_PLLI2SCFGR, 26, 27 },
 546         { "vco-sai", STM32F4_RCC_PLLSAICFGR, 28, 29 },
 547 };
 548
 549
 550 static const struct clk_div_table post_divr_table[] = {
 551         { 0, 2 }, { 1, 4 }, { 2, 8 }, { 3, 16 }, { 0 }
 552 };
 553
 554 #define MAX_POST_DIV 3
 555 static const struct stm32f4_pll_post_div_data  post_div_data[MAX_POST_DIV] = {
 556         { CLK_I2SQ_PDIV, PLL_VCO_I2S, "plli2s-q-div", "plli2s-q",
 557                 CLK_SET_RATE_PARENT, STM32F4_RCC_DCKCFGR, 0, 5, 0, NULL},
 558
 559         { CLK_SAIQ_PDIV, PLL_VCO_SAI, "pllsai-q-div", "pllsai-q",
 560                 CLK_SET_RATE_PARENT, STM32F4_RCC_DCKCFGR, 8, 5, 0, NULL },
 561
 562         { NO_IDX, PLL_VCO_SAI, "pllsai-r-div", "pllsai-r", CLK_SET_RATE_PARENT,
 563                 STM32F4_RCC_DCKCFGR, 16, 2, 0, post_divr_table },
 564 };
 565
 566 struct stm32f4_div_data {
 567         u8 shift;
 568         u8 width;
 569         u8 flag_div;
 570         const struct clk_div_table *div_table;
 571 };
 572
 573 #define MAX_PLL_DIV 3
 574 static const struct stm32f4_div_data  div_data[MAX_PLL_DIV] = {
 575         { 16, 2, 0, pll_divp_table },
 576         { 24, 4, 0, pll_divq_table },
 577         { 28, 3, 0, pll_divr_table },
 578 };
 579
 580 struct stm32f4_pll_data {
 581         u8 pll_num;
 582         u8 n_start;
 583         const char *div_name[MAX_PLL_DIV];
 584 };
 585
 586 static const struct stm32f4_pll_data stm32f429_pll[MAX_PLL_DIV] = {
 587         { PLL,     192, { "pll", "pll48",    NULL       } },
 588         { PLL_I2S, 192, { NULL,  "plli2s-q", "plli2s-r" } },
 589         { PLL_SAI,  49, { NULL,  "pllsai-q", "pllsai-r" } },
 590 };
 591
 592 static const struct stm32f4_pll_data stm32f469_pll[MAX_PLL_DIV] = {
 593         { PLL,     50, { "pll",      "pll-q",    "pll-r"    } },
 594         { PLL_I2S, 50, { "plli2s-p", "plli2s-q", "plli2s-r" } },
 595         { PLL_SAI, 50, { "pllsai-p", "pllsai-q", "pllsai-r" } },
 596 };
 597
 598 static int stm32f4_pll_is_enabled(struct clk_hw *hw)
 599 {
 600         return clk_gate_ops.is_enabled(hw);
 601 }
 602
 603 #define PLL_TIMEOUT 10000
 604
 605 static int stm32f4_pll_enable(struct clk_hw *hw)
 606 {
 607         struct clk_gate *gate = to_clk_gate(hw);
 608         struct stm32f4_pll *pll = to_stm32f4_pll(gate);
 609         int bit_status;
 610         unsigned int timeout = PLL_TIMEOUT;
 611
 612         if (clk_gate_ops.is_enabled(hw))
 613                 return 0;
 614
 615         clk_gate_ops.enable(hw);
 616
 617         do {
 618                 bit_status = !(readl(gate->reg) & BIT(pll->bit_rdy_idx));
 619
 620         } while (bit_status && --timeout);
 621
 622         return bit_status;
 623 }
 624
 625 static void stm32f4_pll_disable(struct clk_hw *hw)
 626 {
 627         clk_gate_ops.disable(hw);
 628 }
 629
 630 static unsigned long stm32f4_pll_recalc(struct clk_hw *hw,
 631                 unsigned long parent_rate)
 632 {
 633         struct clk_gate *gate = to_clk_gate(hw);
 634         struct stm32f4_pll *pll = to_stm32f4_pll(gate);
 635         unsigned long n;
 636
 637         n = (readl(base + pll->offset) >> 6) & 0x1ff;
 638
 639         return parent_rate * n;
 640 }
 641
 642 static long stm32f4_pll_round_rate(struct clk_hw *hw, unsigned long rate,
 643                 unsigned long *prate)
 644 {
 645         struct clk_gate *gate = to_clk_gate(hw);
 646         struct stm32f4_pll *pll = to_stm32f4_pll(gate);
 647         unsigned long n;
 648
 649         n = rate / *prate;
 650
 651         if (n < pll->n_start)
 652                 n = pll->n_start;
 653         else if (n > 432)
 654                 n = 432;
 655
 656         return *prate * n;
 657 }
 658
 659 static int stm32f4_pll_set_rate(struct clk_hw *hw, unsigned long rate,
 660                                 unsigned long parent_rate)
 661 {
 662         struct clk_gate *gate = to_clk_gate(hw);
 663         struct stm32f4_pll *pll = to_stm32f4_pll(gate);
 664
 665         unsigned long n;
 666         unsigned long val;
 667         int pll_state;
 668
 669         pll_state = stm32f4_pll_is_enabled(hw);
 670
 671         if (pll_state)
 672                 stm32f4_pll_disable(hw);
 673
 674         n = rate  / parent_rate;
 675
 676         val = readl(base + pll->offset) & ~(0x1ff << 6);
 677
 678         writel(val | ((n & 0x1ff) <<  6), base + pll->offset);
 679
 680         if (pll_state)
 681                 stm32f4_pll_enable(hw);
 682
 683         return 0;
 684 }
 685
 686 static const struct clk_ops stm32f4_pll_gate_ops = {
 687         .enable         = stm32f4_pll_enable,
 688         .disable        = stm32f4_pll_disable,
 689         .is_enabled     = stm32f4_pll_is_enabled,
 690         .recalc_rate    = stm32f4_pll_recalc,
 691         .round_rate     = stm32f4_pll_round_rate,
 692         .set_rate       = stm32f4_pll_set_rate,
 693 };
 694
 695 struct stm32f4_pll_div {
 696         struct clk_divider div;
 697         struct clk_hw *hw_pll;
 698 };
 699
 700 #define to_pll_div_clk(_div) container_of(_div, struct stm32f4_pll_div, div)
 701
 702 static unsigned long stm32f4_pll_div_recalc_rate(struct clk_hw *hw,
 703                 unsigned long parent_rate)
 704 {
 705         return clk_divider_ops.recalc_rate(hw, parent_rate);
 706 }
 707
 708 static int stm32f4_pll_div_determine_rate(struct clk_hw *hw,
 709                                           struct clk_rate_request *req)
 710 {
 711         return clk_divider_ops.determine_rate(hw, req);
 712 }
 713
 714 static int stm32f4_pll_div_set_rate(struct clk_hw *hw, unsigned long rate,
 715                                 unsigned long parent_rate)
 716 {
 717         int pll_state, ret;
 718
 719         struct clk_divider *div = to_clk_divider(hw);
 720         struct stm32f4_pll_div *pll_div = to_pll_div_clk(div);
 721
 722         pll_state = stm32f4_pll_is_enabled(pll_div->hw_pll);
 723
 724         if (pll_state)
 725                 stm32f4_pll_disable(pll_div->hw_pll);
 726
 727         ret = clk_divider_ops.set_rate(hw, rate, parent_rate);
 728
 729         if (pll_state)
 730                 stm32f4_pll_enable(pll_div->hw_pll);
 731
 732         return ret;
 733 }
 734
 735 static const struct clk_ops stm32f4_pll_div_ops = {
 736         .recalc_rate = stm32f4_pll_div_recalc_rate,
 737         .determine_rate = stm32f4_pll_div_determine_rate,
 738         .set_rate = stm32f4_pll_div_set_rate,
 739 };
 740
 741 static struct clk_hw *clk_register_pll_div(const char *name,
 742                 const char *parent_name, unsigned long flags,
 743                 void __iomem *reg, u8 shift, u8 width,
 744                 u8 clk_divider_flags, const struct clk_div_table *table,
 745                 struct clk_hw *pll_hw, spinlock_t *lock)
 746 {
 747         struct stm32f4_pll_div *pll_div;
 748         struct clk_hw *hw;
 749         struct clk_init_data init;
 750         int ret;
 751
 752         /* allocate the divider */
 753         pll_div = kzalloc(sizeof(*pll_div), GFP_KERNEL);
 754         if (!pll_div)
 755                 return ERR_PTR(-ENOMEM);
 756
 757         init.name = name;
 758         init.ops = &stm32f4_pll_div_ops;
 759         init.flags = flags;
 760         init.parent_names = (parent_name ? &parent_name : NULL);
 761         init.num_parents = (parent_name ? 1 : 0);
 762
 763         /* struct clk_divider assignments */
 764         pll_div->div.reg = reg;
 765         pll_div->div.shift = shift;
 766         pll_div->div.width = width;
 767         pll_div->div.flags = clk_divider_flags;
 768         pll_div->div.lock = lock;
 769         pll_div->div.table = table;
 770         pll_div->div.hw.init = &init;
 771
 772         pll_div->hw_pll = pll_hw;
 773
 774         /* register the clock */
 775         hw = &pll_div->div.hw;
 776         ret = clk_hw_register(NULL, hw);
 777         if (ret) {
 778                 kfree(pll_div);
 779                 hw = ERR_PTR(ret);
 780         }
 781
 782         return hw;
 783 }
 784
 785 static struct clk_hw *stm32f4_rcc_register_pll(const char *pllsrc,
 786                 const struct stm32f4_pll_data *data,  spinlock_t *lock)
 787 {
 788         struct stm32f4_pll *pll;
 789         struct clk_init_data init = { NULL };
 790         void __iomem *reg;
 791         struct clk_hw *pll_hw;
 792         int ret;
 793         int i;
 794         const struct stm32f4_vco_data *vco;
 795
 796
 797         pll = kzalloc(sizeof(*pll), GFP_KERNEL);
 798         if (!pll)
 799                 return ERR_PTR(-ENOMEM);
 800
 801         vco = &vco_data[data->pll_num];
 802
 803         init.name = vco->vco_name;
 804         init.ops = &stm32f4_pll_gate_ops;
 805         init.flags = CLK_SET_RATE_GATE;
 806         init.parent_names = &pllsrc;
 807         init.num_parents = 1;
 808
 809         pll->gate.lock = lock;
 810         pll->gate.reg = base + STM32F4_RCC_CR;
 811         pll->gate.bit_idx = vco->bit_idx;
 812         pll->gate.hw.init = &init;
 813
 814         pll->offset = vco->offset;
 815         pll->n_start = data->n_start;
 816         pll->bit_rdy_idx = vco->bit_rdy_idx;
 817         pll->status = (readl(base + STM32F4_RCC_CR) >> vco->bit_idx) & 0x1;
 818
 819         reg = base + pll->offset;
 820
 821         pll_hw = &pll->gate.hw;
 822         ret = clk_hw_register(NULL, pll_hw);
 823         if (ret) {
 824                 kfree(pll);
 825                 return ERR_PTR(ret);
 826         }
 827
 828         for (i = 0; i < MAX_PLL_DIV; i++)
 829                 if (data->div_name[i])
 830                         clk_register_pll_div(data->div_name[i],
 831                                         vco->vco_name,
 832                                         0,
 833                                         reg,
 834                                         div_data[i].shift,
 835                                         div_data[i].width,
 836                                         div_data[i].flag_div,
 837                                         div_data[i].div_table,
 838                                         pll_hw,
 839                                         lock);
 840         return pll_hw;
 841 }
 842
 843 /*
 844  * Converts the primary and secondary indices (as they appear in DT) to an
 845  * offset into our struct clock array.
 846  */
 847 static int stm32f4_rcc_lookup_clk_idx(u8 primary, u8 secondary)
 848 {
 849         u64 table[MAX_GATE_MAP];
 850
 851         if (primary == 1) {
 852                 if (WARN_ON(secondary >= stm32fx_end_primary_clk))
 853                         return -EINVAL;
 854                 return secondary;
 855         }
 856
 857         memcpy(table, stm32f4_gate_map, sizeof(table));
 858
 859         /* only bits set in table can be used as indices */
 860         if (WARN_ON(secondary >= BITS_PER_BYTE * sizeof(table) ||
 861                     0 == (table[BIT_ULL_WORD(secondary)] &
 862                           BIT_ULL_MASK(secondary))))
 863                 return -EINVAL;
 864
 865         /* mask out bits above our current index */
 866         table[BIT_ULL_WORD(secondary)] &=
 867             GENMASK_ULL(secondary % BITS_PER_LONG_LONG, 0);
 868
 869         return stm32fx_end_primary_clk - 1 + hweight64(table[0]) +
 870                (BIT_ULL_WORD(secondary) >= 1 ? hweight64(table[1]) : 0) +
 871                (BIT_ULL_WORD(secondary) >= 2 ? hweight64(table[2]) : 0);
 872 }
 873
 874 static struct clk_hw *
 875 stm32f4_rcc_lookup_clk(struct of_phandle_args *clkspec, void *data)
 876 {
 877         int i = stm32f4_rcc_lookup_clk_idx(clkspec->args[0], clkspec->args[1]);
 878
 879         if (i < 0)
 880                 return ERR_PTR(-EINVAL);
 881
 882         return clks[i];
 883 }
 884
 885 #define to_rgclk(_rgate) container_of(_rgate, struct stm32_rgate, gate)
 886
 887 static inline void disable_power_domain_write_protection(void)
 888 {
 889         if (pdrm)
 890                 regmap_update_bits(pdrm, 0x00, (1 << 8), (1 << 8));
 891 }
 892
 893 static inline void enable_power_domain_write_protection(void)
 894 {
 895         if (pdrm)
 896                 regmap_update_bits(pdrm, 0x00, (1 << 8), (0 << 8));
 897 }
 898
 899 static inline void sofware_reset_backup_domain(void)
 900 {
 901         unsigned long val;
 902
 903         val = readl(base + STM32F4_RCC_BDCR);
 904         writel(val | BIT(16), base + STM32F4_RCC_BDCR);
 905         writel(val & ~BIT(16), base + STM32F4_RCC_BDCR);
 906 }
 907
 908 struct stm32_rgate {
 909         struct  clk_gate gate;
 910         u8      bit_rdy_idx;
 911 };
 912
 913 #define RGATE_TIMEOUT 50000
 914
 915 static int rgclk_enable(struct clk_hw *hw)
 916 {
 917         struct clk_gate *gate = to_clk_gate(hw);
 918         struct stm32_rgate *rgate = to_rgclk(gate);
 919         int bit_status;
 920         unsigned int timeout = RGATE_TIMEOUT;
 921
 922         if (clk_gate_ops.is_enabled(hw))
 923                 return 0;
 924
 925         disable_power_domain_write_protection();
 926
 927         clk_gate_ops.enable(hw);
 928
 929         do {
 930                 bit_status = !(readl(gate->reg) & BIT(rgate->bit_rdy_idx));
 931                 if (bit_status)
 932                         udelay(100);
 933
 934         } while (bit_status && --timeout);
 935
 936         enable_power_domain_write_protection();
 937
 938         return bit_status;
 939 }
 940
 941 static void rgclk_disable(struct clk_hw *hw)
 942 {
 943         clk_gate_ops.disable(hw);
 944 }
 945
 946 static int rgclk_is_enabled(struct clk_hw *hw)
 947 {
 948         return clk_gate_ops.is_enabled(hw);
 949 }
 950
 951 static const struct clk_ops rgclk_ops = {
 952         .enable = rgclk_enable,
 953         .disable = rgclk_disable,
 954         .is_enabled = rgclk_is_enabled,
 955 };
 956
 957 static struct clk_hw *clk_register_rgate(struct device *dev, const char *name,
 958                 const char *parent_name, unsigned long flags,
 959                 void __iomem *reg, u8 bit_idx, u8 bit_rdy_idx,
 960                 u8 clk_gate_flags, spinlock_t *lock)
 961 {
 962         struct stm32_rgate *rgate;
 963         struct clk_init_data init = { NULL };
 964         struct clk_hw *hw;
 965         int ret;
 966
 967         rgate = kzalloc(sizeof(*rgate), GFP_KERNEL);
 968         if (!rgate)
 969                 return ERR_PTR(-ENOMEM);
 970
 971         init.name = name;
 972         init.ops = &rgclk_ops;
 973         init.flags = flags;
 974         init.parent_names = &parent_name;
 975         init.num_parents = 1;
 976
 977         rgate->bit_rdy_idx = bit_rdy_idx;
 978
 979         rgate->gate.lock = lock;
 980         rgate->gate.reg = reg;
 981         rgate->gate.bit_idx = bit_idx;
 982         rgate->gate.hw.init = &init;
 983
 984         hw = &rgate->gate.hw;
 985         ret = clk_hw_register(dev, hw);
 986         if (ret) {
 987                 kfree(rgate);
 988                 hw = ERR_PTR(ret);
 989         }
 990
 991         return hw;
 992 }
 993
 994 static int cclk_gate_enable(struct clk_hw *hw)
 995 {
 996         int ret;
 997
 998         disable_power_domain_write_protection();
 999
1000         ret = clk_gate_ops.enable(hw);
1001
1002         enable_power_domain_write_protection();
1003
1004         return ret;
1005 }
1006
1007 static void cclk_gate_disable(struct clk_hw *hw)
1008 {
1009         disable_power_domain_write_protection();
1010
1011         clk_gate_ops.disable(hw);
1012
1013         enable_power_domain_write_protection();
1014 }
1015
1016 static int cclk_gate_is_enabled(struct clk_hw *hw)
1017 {
1018         return clk_gate_ops.is_enabled(hw);
1019 }
1020
1021 static const struct clk_ops cclk_gate_ops = {
1022         .enable         = cclk_gate_enable,
1023         .disable        = cclk_gate_disable,
1024         .is_enabled     = cclk_gate_is_enabled,
1025 };
1026
1027 static u8 cclk_mux_get_parent(struct clk_hw *hw)
1028 {
1029         return clk_mux_ops.get_parent(hw);
1030 }
1031
1032 static int cclk_mux_set_parent(struct clk_hw *hw, u8 index)
1033 {
1034         int ret;
1035
1036         disable_power_domain_write_protection();
1037
1038         sofware_reset_backup_domain();
1039
1040         ret = clk_mux_ops.set_parent(hw, index);
1041
1042         enable_power_domain_write_protection();
1043
1044         return ret;
1045 }
1046
1047 static const struct clk_ops cclk_mux_ops = {
1048         .determine_rate = clk_hw_determine_rate_no_reparent,
1049         .get_parent = cclk_mux_get_parent,
1050         .set_parent = cclk_mux_set_parent,
1051 };
1052
1053 static struct clk_hw *stm32_register_cclk(struct device *dev, const char *name,
1054                 const char * const *parent_names, int num_parents,
1055                 void __iomem *reg, u8 bit_idx, u8 shift, unsigned long flags,
1056                 spinlock_t *lock)
1057 {
1058         struct clk_hw *hw;
1059         struct clk_gate *gate;
1060         struct clk_mux *mux;
1061
1062         gate = kzalloc(sizeof(*gate), GFP_KERNEL);
1063         if (!gate) {
1064                 hw = ERR_PTR(-EINVAL);
1065                 goto fail;
1066         }
1067
1068         mux = kzalloc(sizeof(*mux), GFP_KERNEL);
1069         if (!mux) {
1070                 kfree(gate);
1071                 hw = ERR_PTR(-EINVAL);
1072                 goto fail;
1073         }
1074
1075         gate->reg = reg;
1076         gate->bit_idx = bit_idx;
1077         gate->flags = 0;
1078         gate->lock = lock;
1079
1080         mux->reg = reg;
1081         mux->shift = shift;
1082         mux->mask = 3;
1083         mux->flags = 0;
1084
1085         hw = clk_hw_register_composite(dev, name, parent_names, num_parents,
1086                         &mux->hw, &cclk_mux_ops,
1087                         NULL, NULL,
1088                         &gate->hw, &cclk_gate_ops,
1089                         flags);
1090
1091         if (IS_ERR(hw)) {
1092                 kfree(gate);
1093                 kfree(mux);
1094         }
1095
1096 fail:
1097         return hw;
1098 }
1099
1100 static const char *sys_parents[] __initdata =   { "hsi", NULL, "pll" };
1101
1102 static const struct clk_div_table ahb_div_table[] = {
1103         { 0x0,   1 }, { 0x1,   1 }, { 0x2,   1 }, { 0x3,   1 },
1104         { 0x4,   1 }, { 0x5,   1 }, { 0x6,   1 }, { 0x7,   1 },
1105         { 0x8,   2 }, { 0x9,   4 }, { 0xa,   8 }, { 0xb,  16 },
1106         { 0xc,  64 }, { 0xd, 128 }, { 0xe, 256 }, { 0xf, 512 },
1107         { 0 },
1108 };
1109
1110 static const struct clk_div_table apb_div_table[] = {
1111         { 0,  1 }, { 0,  1 }, { 0,  1 }, { 0,  1 },
1112         { 4,  2 }, { 5,  4 }, { 6,  8 }, { 7, 16 },
1113         { 0 },
1114 };
1115
1116 static const char *rtc_parents[4] = {
1117         "no-clock", "lse", "lsi", "hse-rtc"
1118 };
1119
1120 static const char *pll_src = "pll-src";
1121
1122 static const char *pllsrc_parent[2] = { "hsi", NULL };
1123
1124 static const char *dsi_parent[2] = { NULL, "pll-r" };
1125
1126 static const char *lcd_parent[1] = { "pllsai-r-div" };
1127
1128 static const char *i2s_parents[2] = { "plli2s-r", NULL };
1129
1130 static const char *sai_parents[4] = { "pllsai-q-div", "plli2s-q-div", NULL,
1131         "no-clock" };
1132
1133 static const char *pll48_parents[2] = { "pll-q", "pllsai-p" };
1134
1135 static const char *sdmux_parents[2] = { "pll48", "sys" };
1136
1137 static const char *hdmi_parents[2] = { "lse", "hsi_div488" };
1138
1139 static const char *spdif_parent[1] = { "plli2s-p" };
1140
1141 static const char *lptim_parent[4] = { "apb1_mul", "lsi", "hsi", "lse" };
1142
1143 static const char *uart_parents1[4] = { "apb2_div", "sys", "hsi", "lse" };
1144 static const char *uart_parents2[4] = { "apb1_div", "sys", "hsi", "lse" };
1145
1146 static const char *i2c_parents[4] = { "apb1_div", "sys", "hsi", "no-clock" };
1147
1148 static const char * const dfsdm1_src[] = { "apb2_div", "sys" };
1149 static const char * const adsfdm1_parent[] = { "sai1_clk", "sai2_clk" };
1150
1151 struct stm32_aux_clk {
1152         int idx;
1153         const char *name;
1154         const char * const *parent_names;
1155         int num_parents;
1156         int offset_mux;
1157         u8 shift;
1158         u8 mask;
1159         int offset_gate;
1160         u8 bit_idx;
1161         unsigned long flags;
1162 };
1163
1164 struct stm32f4_clk_data {
1165         const struct stm32f4_gate_data *gates_data;
1166         const u64 *gates_map;
1167         int gates_num;
1168         const struct stm32f4_pll_data *pll_data;
1169         const struct stm32_aux_clk *aux_clk;
1170         int aux_clk_num;
1171         int end_primary;
1172 };
1173
1174 static const struct stm32_aux_clk stm32f429_aux_clk[] = {
1175         {
1176                 CLK_LCD, "lcd-tft", lcd_parent, ARRAY_SIZE(lcd_parent),
1177                 NO_MUX, 0, 0,
1178                 STM32F4_RCC_APB2ENR, 26,
1179                 CLK_SET_RATE_PARENT
1180         },
1181         {
1182                 CLK_I2S, "i2s", i2s_parents, ARRAY_SIZE(i2s_parents),
1183                 STM32F4_RCC_CFGR, 23, 1,
1184                 NO_GATE, 0,
1185                 CLK_SET_RATE_PARENT
1186         },
1187         {
1188                 CLK_SAI1, "sai1-a", sai_parents, ARRAY_SIZE(sai_parents),
1189                 STM32F4_RCC_DCKCFGR, 20, 3,
1190                 STM32F4_RCC_APB2ENR, 22,
1191                 CLK_SET_RATE_PARENT
1192         },
1193         {
1194                 CLK_SAI2, "sai1-b", sai_parents, ARRAY_SIZE(sai_parents),
1195                 STM32F4_RCC_DCKCFGR, 22, 3,
1196                 STM32F4_RCC_APB2ENR, 22,
1197                 CLK_SET_RATE_PARENT
1198         },
1199 };
1200
1201 static const struct stm32_aux_clk stm32f469_aux_clk[] = {
1202         {
1203                 CLK_LCD, "lcd-tft", lcd_parent, ARRAY_SIZE(lcd_parent),
1204                 NO_MUX, 0, 0,
1205                 STM32F4_RCC_APB2ENR, 26,
1206                 CLK_SET_RATE_PARENT
1207         },
1208         {
1209                 CLK_I2S, "i2s", i2s_parents, ARRAY_SIZE(i2s_parents),
1210                 STM32F4_RCC_CFGR, 23, 1,
1211                 NO_GATE, 0,
1212                 CLK_SET_RATE_PARENT
1213         },
1214         {
1215                 CLK_SAI1, "sai1-a", sai_parents, ARRAY_SIZE(sai_parents),
1216                 STM32F4_RCC_DCKCFGR, 20, 3,
1217                 STM32F4_RCC_APB2ENR, 22,
1218                 CLK_SET_RATE_PARENT
1219         },
1220         {
1221                 CLK_SAI2, "sai1-b", sai_parents, ARRAY_SIZE(sai_parents),
1222                 STM32F4_RCC_DCKCFGR, 22, 3,
1223                 STM32F4_RCC_APB2ENR, 22,
1224                 CLK_SET_RATE_PARENT
1225         },
1226         {
1227                 NO_IDX, "pll48", pll48_parents, ARRAY_SIZE(pll48_parents),
1228                 STM32F4_RCC_DCKCFGR, 27, 1,
1229                 NO_GATE, 0,
1230                 0
1231         },
1232         {
1233                 NO_IDX, "sdmux", sdmux_parents, ARRAY_SIZE(sdmux_parents),
1234                 STM32F4_RCC_DCKCFGR, 28, 1,
1235                 NO_GATE, 0,
1236                 0
1237         },
1238         {
1239                 CLK_F469_DSI, "dsi", dsi_parent, ARRAY_SIZE(dsi_parent),
1240                 STM32F4_RCC_DCKCFGR, 29, 1,
1241                 STM32F4_RCC_APB2ENR, 27,
1242                 CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT
1243         },
1244 };
1245
1246 static const struct stm32_aux_clk stm32f746_aux_clk[] = {
1247         {
1248                 CLK_LCD, "lcd-tft", lcd_parent, ARRAY_SIZE(lcd_parent),
1249                 NO_MUX, 0, 0,
1250                 STM32F4_RCC_APB2ENR, 26,
1251                 CLK_SET_RATE_PARENT
1252         },
1253         {
1254                 CLK_I2S, "i2s", i2s_parents, ARRAY_SIZE(i2s_parents),
1255                 STM32F4_RCC_CFGR, 23, 1,
1256                 NO_GATE, 0,
1257                 CLK_SET_RATE_PARENT
1258         },
1259         {
1260                 CLK_SAI1, "sai1_clk", sai_parents, ARRAY_SIZE(sai_parents),
1261                 STM32F4_RCC_DCKCFGR, 20, 3,
1262                 STM32F4_RCC_APB2ENR, 22,
1263                 CLK_SET_RATE_PARENT
1264         },
1265         {
1266                 CLK_SAI2, "sai2_clk", sai_parents, ARRAY_SIZE(sai_parents),
1267                 STM32F4_RCC_DCKCFGR, 22, 3,
1268                 STM32F4_RCC_APB2ENR, 23,
1269                 CLK_SET_RATE_PARENT
1270         },
1271         {
1272                 NO_IDX, "pll48", pll48_parents, ARRAY_SIZE(pll48_parents),
1273                 STM32F7_RCC_DCKCFGR2, 27, 1,
1274                 NO_GATE, 0,
1275                 0
1276         },
1277         {
1278                 NO_IDX, "sdmux", sdmux_parents, ARRAY_SIZE(sdmux_parents),
1279                 STM32F7_RCC_DCKCFGR2, 28, 1,
1280                 NO_GATE, 0,
1281                 0
1282         },
1283         {
1284                 CLK_HDMI_CEC, "hdmi-cec",
1285                 hdmi_parents, ARRAY_SIZE(hdmi_parents),
1286                 STM32F7_RCC_DCKCFGR2, 26, 1,
1287                 NO_GATE, 0,
1288                 0
1289         },
1290         {
1291                 CLK_SPDIF, "spdif-rx",
1292                 spdif_parent, ARRAY_SIZE(spdif_parent),
1293                 STM32F7_RCC_DCKCFGR2, 22, 3,
1294                 STM32F4_RCC_APB2ENR, 23,
1295                 CLK_SET_RATE_PARENT
1296         },
1297         {
1298                 CLK_USART1, "usart1",
1299                 uart_parents1, ARRAY_SIZE(uart_parents1),
1300                 STM32F7_RCC_DCKCFGR2, 0, 3,
1301                 STM32F4_RCC_APB2ENR, 4,
1302                 CLK_SET_RATE_PARENT,
1303         },
1304         {
1305                 CLK_USART2, "usart2",
1306                 uart_parents2, ARRAY_SIZE(uart_parents1),
1307                 STM32F7_RCC_DCKCFGR2, 2, 3,
1308                 STM32F4_RCC_APB1ENR, 17,
1309                 CLK_SET_RATE_PARENT,
1310         },
1311         {
1312                 CLK_USART3, "usart3",
1313                 uart_parents2, ARRAY_SIZE(uart_parents1),
1314                 STM32F7_RCC_DCKCFGR2, 4, 3,
1315                 STM32F4_RCC_APB1ENR, 18,
1316                 CLK_SET_RATE_PARENT,
1317         },
1318         {
1319                 CLK_UART4, "uart4",
1320                 uart_parents2, ARRAY_SIZE(uart_parents1),
1321                 STM32F7_RCC_DCKCFGR2, 6, 3,
1322                 STM32F4_RCC_APB1ENR, 19,
1323                 CLK_SET_RATE_PARENT,
1324         },
1325         {
1326                 CLK_UART5, "uart5",
1327                 uart_parents2, ARRAY_SIZE(uart_parents1),
1328                 STM32F7_RCC_DCKCFGR2, 8, 3,
1329                 STM32F4_RCC_APB1ENR, 20,
1330                 CLK_SET_RATE_PARENT,
1331         },
1332         {
1333                 CLK_USART6, "usart6",
1334                 uart_parents1, ARRAY_SIZE(uart_parents1),
1335                 STM32F7_RCC_DCKCFGR2, 10, 3,
1336                 STM32F4_RCC_APB2ENR, 5,
1337                 CLK_SET_RATE_PARENT,
1338         },
1339
1340         {
1341                 CLK_UART7, "uart7",
1342                 uart_parents2, ARRAY_SIZE(uart_parents1),
1343                 STM32F7_RCC_DCKCFGR2, 12, 3,
1344                 STM32F4_RCC_APB1ENR, 30,
1345                 CLK_SET_RATE_PARENT,
1346         },
1347         {
1348                 CLK_UART8, "uart8",
1349                 uart_parents2, ARRAY_SIZE(uart_parents1),
1350                 STM32F7_RCC_DCKCFGR2, 14, 3,
1351                 STM32F4_RCC_APB1ENR, 31,
1352                 CLK_SET_RATE_PARENT,
1353         },
1354         {
1355                 CLK_I2C1, "i2c1",
1356                 i2c_parents, ARRAY_SIZE(i2c_parents),
1357                 STM32F7_RCC_DCKCFGR2, 16, 3,
1358                 STM32F4_RCC_APB1ENR, 21,
1359                 CLK_SET_RATE_PARENT,
1360         },
1361         {
1362                 CLK_I2C2, "i2c2",
1363                 i2c_parents, ARRAY_SIZE(i2c_parents),
1364                 STM32F7_RCC_DCKCFGR2, 18, 3,
1365                 STM32F4_RCC_APB1ENR, 22,
1366                 CLK_SET_RATE_PARENT,
1367         },
1368         {
1369                 CLK_I2C3, "i2c3",
1370                 i2c_parents, ARRAY_SIZE(i2c_parents),
1371                 STM32F7_RCC_DCKCFGR2, 20, 3,
1372                 STM32F4_RCC_APB1ENR, 23,
1373                 CLK_SET_RATE_PARENT,
1374         },
1375         {
1376                 CLK_I2C4, "i2c4",
1377                 i2c_parents, ARRAY_SIZE(i2c_parents),
1378                 STM32F7_RCC_DCKCFGR2, 22, 3,
1379                 STM32F4_RCC_APB1ENR, 24,
1380                 CLK_SET_RATE_PARENT,
1381         },
1382
1383         {
1384                 CLK_LPTIMER, "lptim1",
1385                 lptim_parent, ARRAY_SIZE(lptim_parent),
1386                 STM32F7_RCC_DCKCFGR2, 24, 3,
1387                 STM32F4_RCC_APB1ENR, 9,
1388                 CLK_SET_RATE_PARENT
1389         },
1390 };
1391
1392 static const struct stm32_aux_clk stm32f769_aux_clk[] = {
1393         {
1394                 CLK_LCD, "lcd-tft", lcd_parent, ARRAY_SIZE(lcd_parent),
1395                 NO_MUX, 0, 0,
1396                 STM32F4_RCC_APB2ENR, 26,
1397                 CLK_SET_RATE_PARENT
1398         },
1399         {
1400                 CLK_I2S, "i2s", i2s_parents, ARRAY_SIZE(i2s_parents),
1401                 STM32F4_RCC_CFGR, 23, 1,
1402                 NO_GATE, 0,
1403                 CLK_SET_RATE_PARENT
1404         },
1405         {
1406                 CLK_SAI1, "sai1_clk", sai_parents, ARRAY_SIZE(sai_parents),
1407                 STM32F4_RCC_DCKCFGR, 20, 3,
1408                 STM32F4_RCC_APB2ENR, 22,
1409                 CLK_SET_RATE_PARENT
1410         },
1411         {
1412                 CLK_SAI2, "sai2_clk", sai_parents, ARRAY_SIZE(sai_parents),
1413                 STM32F4_RCC_DCKCFGR, 22, 3,
1414                 STM32F4_RCC_APB2ENR, 23,
1415                 CLK_SET_RATE_PARENT
1416         },
1417         {
1418                 NO_IDX, "pll48", pll48_parents, ARRAY_SIZE(pll48_parents),
1419                 STM32F7_RCC_DCKCFGR2, 27, 1,
1420                 NO_GATE, 0,
1421                 0
1422         },
1423         {
1424                 NO_IDX, "sdmux1", sdmux_parents, ARRAY_SIZE(sdmux_parents),
1425                 STM32F7_RCC_DCKCFGR2, 28, 1,
1426                 NO_GATE, 0,
1427                 0
1428         },
1429         {
1430                 NO_IDX, "sdmux2", sdmux_parents, ARRAY_SIZE(sdmux_parents),
1431                 STM32F7_RCC_DCKCFGR2, 29, 1,
1432                 NO_GATE, 0,
1433                 0
1434         },
1435         {
1436                 CLK_HDMI_CEC, "hdmi-cec",
1437                 hdmi_parents, ARRAY_SIZE(hdmi_parents),
1438                 STM32F7_RCC_DCKCFGR2, 26, 1,
1439                 NO_GATE, 0,
1440                 0
1441         },
1442         {
1443                 CLK_SPDIF, "spdif-rx",
1444                 spdif_parent, ARRAY_SIZE(spdif_parent),
1445                 STM32F7_RCC_DCKCFGR2, 22, 3,
1446                 STM32F4_RCC_APB2ENR, 23,
1447                 CLK_SET_RATE_PARENT
1448         },
1449         {
1450                 CLK_USART1, "usart1",
1451                 uart_parents1, ARRAY_SIZE(uart_parents1),
1452                 STM32F7_RCC_DCKCFGR2, 0, 3,
1453                 STM32F4_RCC_APB2ENR, 4,
1454                 CLK_SET_RATE_PARENT,
1455         },
1456         {
1457                 CLK_USART2, "usart2",
1458                 uart_parents2, ARRAY_SIZE(uart_parents1),
1459                 STM32F7_RCC_DCKCFGR2, 2, 3,
1460                 STM32F4_RCC_APB1ENR, 17,
1461                 CLK_SET_RATE_PARENT,
1462         },
1463         {
1464                 CLK_USART3, "usart3",
1465                 uart_parents2, ARRAY_SIZE(uart_parents1),
1466                 STM32F7_RCC_DCKCFGR2, 4, 3,
1467                 STM32F4_RCC_APB1ENR, 18,
1468                 CLK_SET_RATE_PARENT,
1469         },
1470         {
1471                 CLK_UART4, "uart4",
1472                 uart_parents2, ARRAY_SIZE(uart_parents1),
1473                 STM32F7_RCC_DCKCFGR2, 6, 3,
1474                 STM32F4_RCC_APB1ENR, 19,
1475                 CLK_SET_RATE_PARENT,
1476         },
1477         {
1478                 CLK_UART5, "uart5",
1479                 uart_parents2, ARRAY_SIZE(uart_parents1),
1480                 STM32F7_RCC_DCKCFGR2, 8, 3,
1481                 STM32F4_RCC_APB1ENR, 20,
1482                 CLK_SET_RATE_PARENT,
1483         },
1484         {
1485                 CLK_USART6, "usart6",
1486                 uart_parents1, ARRAY_SIZE(uart_parents1),
1487                 STM32F7_RCC_DCKCFGR2, 10, 3,
1488                 STM32F4_RCC_APB2ENR, 5,
1489                 CLK_SET_RATE_PARENT,
1490         },
1491         {
1492                 CLK_UART7, "uart7",
1493                 uart_parents2, ARRAY_SIZE(uart_parents1),
1494                 STM32F7_RCC_DCKCFGR2, 12, 3,
1495                 STM32F4_RCC_APB1ENR, 30,
1496                 CLK_SET_RATE_PARENT,
1497         },
1498         {
1499                 CLK_UART8, "uart8",
1500                 uart_parents2, ARRAY_SIZE(uart_parents1),
1501                 STM32F7_RCC_DCKCFGR2, 14, 3,
1502                 STM32F4_RCC_APB1ENR, 31,
1503                 CLK_SET_RATE_PARENT,
1504         },
1505         {
1506                 CLK_I2C1, "i2c1",
1507                 i2c_parents, ARRAY_SIZE(i2c_parents),
1508                 STM32F7_RCC_DCKCFGR2, 16, 3,
1509                 STM32F4_RCC_APB1ENR, 21,
1510                 CLK_SET_RATE_PARENT,
1511         },
1512         {
1513                 CLK_I2C2, "i2c2",
1514                 i2c_parents, ARRAY_SIZE(i2c_parents),
1515                 STM32F7_RCC_DCKCFGR2, 18, 3,
1516                 STM32F4_RCC_APB1ENR, 22,
1517                 CLK_SET_RATE_PARENT,
1518         },
1519         {
1520                 CLK_I2C3, "i2c3",
1521                 i2c_parents, ARRAY_SIZE(i2c_parents),
1522                 STM32F7_RCC_DCKCFGR2, 20, 3,
1523                 STM32F4_RCC_APB1ENR, 23,
1524                 CLK_SET_RATE_PARENT,
1525         },
1526         {
1527                 CLK_I2C4, "i2c4",
1528                 i2c_parents, ARRAY_SIZE(i2c_parents),
1529                 STM32F7_RCC_DCKCFGR2, 22, 3,
1530                 STM32F4_RCC_APB1ENR, 24,
1531                 CLK_SET_RATE_PARENT,
1532         },
1533         {
1534                 CLK_LPTIMER, "lptim1",
1535                 lptim_parent, ARRAY_SIZE(lptim_parent),
1536                 STM32F7_RCC_DCKCFGR2, 24, 3,
1537                 STM32F4_RCC_APB1ENR, 9,
1538                 CLK_SET_RATE_PARENT
1539         },
1540         {
1541                 CLK_F769_DSI, "dsi",
1542                 dsi_parent, ARRAY_SIZE(dsi_parent),
1543                 STM32F7_RCC_DCKCFGR2, 0, 1,
1544                 STM32F4_RCC_APB2ENR, 27,
1545                 CLK_SET_RATE_PARENT
1546         },
1547         {
1548                 CLK_DFSDM1, "dfsdm1",
1549                 dfsdm1_src, ARRAY_SIZE(dfsdm1_src),
1550                 STM32F4_RCC_DCKCFGR, 25, 1,
1551                 STM32F4_RCC_APB2ENR, 29,
1552                 CLK_SET_RATE_PARENT
1553         },
1554         {
1555                 CLK_ADFSDM1, "adfsdm1",
1556                 adsfdm1_parent, ARRAY_SIZE(adsfdm1_parent),
1557                 STM32F4_RCC_DCKCFGR, 26, 1,
1558                 STM32F4_RCC_APB2ENR, 29,
1559                 CLK_SET_RATE_PARENT
1560         },
1561 };
1562
1563 static const struct stm32f4_clk_data stm32f429_clk_data = {
1564         .end_primary    = END_PRIMARY_CLK,
1565         .gates_data     = stm32f429_gates,
1566         .gates_map      = stm32f42xx_gate_map,
1567         .gates_num      = ARRAY_SIZE(stm32f429_gates),
1568         .pll_data       = stm32f429_pll,
1569         .aux_clk        = stm32f429_aux_clk,
1570         .aux_clk_num    = ARRAY_SIZE(stm32f429_aux_clk),
1571 };
1572
1573 static const struct stm32f4_clk_data stm32f469_clk_data = {
1574         .end_primary    = END_PRIMARY_CLK,
1575         .gates_data     = stm32f469_gates,
1576         .gates_map      = stm32f46xx_gate_map,
1577         .gates_num      = ARRAY_SIZE(stm32f469_gates),
1578         .pll_data       = stm32f469_pll,
1579         .aux_clk        = stm32f469_aux_clk,
1580         .aux_clk_num    = ARRAY_SIZE(stm32f469_aux_clk),
1581 };
1582
1583 static const struct stm32f4_clk_data stm32f746_clk_data = {
1584         .end_primary    = END_PRIMARY_CLK_F7,
1585         .gates_data     = stm32f746_gates,
1586         .gates_map      = stm32f746_gate_map,
1587         .gates_num      = ARRAY_SIZE(stm32f746_gates),
1588         .pll_data       = stm32f469_pll,
1589         .aux_clk        = stm32f746_aux_clk,
1590         .aux_clk_num    = ARRAY_SIZE(stm32f746_aux_clk),
1591 };
1592
1593 static const struct stm32f4_clk_data stm32f769_clk_data = {
1594         .end_primary    = END_PRIMARY_CLK_F7,
1595         .gates_data     = stm32f769_gates,
1596         .gates_map      = stm32f769_gate_map,
1597         .gates_num      = ARRAY_SIZE(stm32f769_gates),
1598         .pll_data       = stm32f469_pll,
1599         .aux_clk        = stm32f769_aux_clk,
1600         .aux_clk_num    = ARRAY_SIZE(stm32f769_aux_clk),
1601 };
1602
1603 static const struct of_device_id stm32f4_of_match[] = {
1604         {
1605                 .compatible = "st,stm32f42xx-rcc",
1606                 .data = &stm32f429_clk_data
1607         },
1608         {
1609                 .compatible = "st,stm32f469-rcc",
1610                 .data = &stm32f469_clk_data
1611         },
1612         {
1613                 .compatible = "st,stm32f746-rcc",
1614                 .data = &stm32f746_clk_data
1615         },
1616         {
1617                 .compatible = "st,stm32f769-rcc",
1618                 .data = &stm32f769_clk_data
1619         },
1620         {}
1621 };
1622
1623 static struct clk_hw *stm32_register_aux_clk(const char *name,
1624                 const char * const *parent_names, int num_parents,
1625                 int offset_mux, u8 shift, u8 mask,
1626                 int offset_gate, u8 bit_idx,
1627                 unsigned long flags, spinlock_t *lock)
1628 {
1629         struct clk_hw *hw;
1630         struct clk_gate *gate = NULL;
1631         struct clk_mux *mux = NULL;
1632         struct clk_hw *mux_hw = NULL, *gate_hw = NULL;
1633         const struct clk_ops *mux_ops = NULL, *gate_ops = NULL;
1634
1635         if (offset_gate != NO_GATE) {
1636                 gate = kzalloc(sizeof(*gate), GFP_KERNEL);
1637                 if (!gate) {
1638                         hw = ERR_PTR(-EINVAL);
1639                         goto fail;
1640                 }
1641
1642                 gate->reg = base + offset_gate;
1643                 gate->bit_idx = bit_idx;
1644                 gate->flags = 0;
1645                 gate->lock = lock;
1646                 gate_hw = &gate->hw;
1647                 gate_ops = &clk_gate_ops;
1648         }
1649
1650         if (offset_mux != NO_MUX) {
1651                 mux = kzalloc(sizeof(*mux), GFP_KERNEL);
1652                 if (!mux) {
1653                         hw = ERR_PTR(-EINVAL);
1654                         goto fail;
1655                 }
1656
1657                 mux->reg = base + offset_mux;
1658                 mux->shift = shift;
1659                 mux->mask = mask;
1660                 mux->flags = 0;
1661                 mux_hw = &mux->hw;
1662                 mux_ops = &clk_mux_ops;
1663         }
1664
1665         if (mux_hw == NULL && gate_hw == NULL) {
1666                 hw = ERR_PTR(-EINVAL);
1667                 goto fail;
1668         }
1669
1670         hw = clk_hw_register_composite(NULL, name, parent_names, num_parents,
1671                         mux_hw, mux_ops,
1672                         NULL, NULL,
1673                         gate_hw, gate_ops,
1674                         flags);
1675
1676 fail:
1677         if (IS_ERR(hw)) {
1678                 kfree(gate);
1679                 kfree(mux);
1680         }
1681
1682         return hw;
1683 }
1684
1685 static void __init stm32f4_rcc_init(struct device_node *np)
1686 {
1687         const char *hse_clk, *i2s_in_clk;
1688         int n;
1689         const struct of_device_id *match;
1690         const struct stm32f4_clk_data *data;
1691         unsigned long pllm;
1692         struct clk_hw *pll_src_hw;
1693
1694         base = of_iomap(np, 0);
1695         if (!base) {
1696                 pr_err("%pOFn: unable to map resource\n", np);
1697                 return;
1698         }
1699
1700         pdrm = syscon_regmap_lookup_by_phandle(np, "st,syscfg");
1701         if (IS_ERR(pdrm)) {
1702                 pdrm = NULL;
1703                 pr_warn("%s: Unable to get syscfg\n", __func__);
1704         }
1705
1706         match = of_match_node(stm32f4_of_match, np);
1707         if (WARN_ON(!match))
1708                 return;
1709
1710         data = match->data;
1711
1712         stm32fx_end_primary_clk = data->end_primary;
1713
1714         clks = kmalloc_array(data->gates_num + stm32fx_end_primary_clk,
1715                         sizeof(*clks), GFP_KERNEL);
1716         if (!clks)
1717                 goto fail;
1718
1719         stm32f4_gate_map = data->gates_map;
1720
1721         hse_clk = of_clk_get_parent_name(np, 0);
1722         dsi_parent[0] = hse_clk;
1723         pllsrc_parent[1] = hse_clk;
1724
1725         i2s_in_clk = of_clk_get_parent_name(np, 1);
1726
1727         i2s_parents[1] = i2s_in_clk;
1728         sai_parents[2] = i2s_in_clk;
1729
1730         if (of_device_is_compatible(np, "st,stm32f769-rcc")) {
1731                 clk_hw_register_gate(NULL, "dfsdm1_apb", "apb2_div", 0,
1732                                      base + STM32F4_RCC_APB2ENR, 29,
1733                                      CLK_IGNORE_UNUSED, &stm32f4_clk_lock);
1734                 dsi_parent[0] = pll_src;
1735                 sai_parents[3] = pll_src;
1736         }
1737
1738         clks[CLK_HSI] = clk_hw_register_fixed_rate_with_accuracy(NULL, "hsi",
1739                         NULL, 0, 16000000, 160000);
1740
1741         pll_src_hw = clk_hw_register_mux(NULL, pll_src, pllsrc_parent,
1742                                          ARRAY_SIZE(pllsrc_parent), 0,
1743                                          base + STM32F4_RCC_PLLCFGR, 22, 1, 0,
1744                                          &stm32f4_clk_lock);
1745
1746         pllm = readl(base + STM32F4_RCC_PLLCFGR) & 0x3f;
1747
1748         clk_hw_register_fixed_factor(NULL, "vco_in", pll_src,
1749                                      0, 1, pllm);
1750
1751         stm32f4_rcc_register_pll("vco_in", &data->pll_data[0],
1752                         &stm32f4_clk_lock);
1753
1754         clks[PLL_VCO_I2S] = stm32f4_rcc_register_pll("vco_in",
1755                         &data->pll_data[1], &stm32f4_clk_lock);
1756
1757         clks[PLL_VCO_SAI] = stm32f4_rcc_register_pll("vco_in",
1758                         &data->pll_data[2], &stm32f4_clk_lock);
1759
1760         for (n = 0; n < MAX_POST_DIV; n++) {
1761                 const struct stm32f4_pll_post_div_data *post_div;
1762                 struct clk_hw *hw;
1763
1764                 post_div = &post_div_data[n];
1765
1766                 hw = clk_register_pll_div(post_div->name,
1767                                 post_div->parent,
1768                                 post_div->flag,
1769                                 base + post_div->offset,
1770                                 post_div->shift,
1771                                 post_div->width,
1772                                 post_div->flag_div,
1773                                 post_div->div_table,
1774                                 clks[post_div->pll_idx],
1775                                 &stm32f4_clk_lock);
1776
1777                 if (post_div->idx != NO_IDX)
1778                         clks[post_div->idx] = hw;
1779         }
1780
1781         sys_parents[1] = hse_clk;
1782
1783         clks[CLK_SYSCLK] = clk_hw_register_mux_table(
1784             NULL, "sys", sys_parents, ARRAY_SIZE(sys_parents), 0,
1785             base + STM32F4_RCC_CFGR, 0, 3, 0, NULL, &stm32f4_clk_lock);
1786
1787         clk_register_divider_table(NULL, "ahb_div", "sys",
1788                                    CLK_SET_RATE_PARENT, base + STM32F4_RCC_CFGR,
1789                                    4, 4, 0, ahb_div_table, &stm32f4_clk_lock);
1790
1791         clk_register_divider_table(NULL, "apb1_div", "ahb_div",
1792                                    CLK_SET_RATE_PARENT, base + STM32F4_RCC_CFGR,
1793                                    10, 3, 0, apb_div_table, &stm32f4_clk_lock);
1794         clk_register_apb_mul(NULL, "apb1_mul", "apb1_div",
1795                              CLK_SET_RATE_PARENT, 12);
1796
1797         clk_register_divider_table(NULL, "apb2_div", "ahb_div",
1798                                    CLK_SET_RATE_PARENT, base + STM32F4_RCC_CFGR,
1799                                    13, 3, 0, apb_div_table, &stm32f4_clk_lock);
1800         clk_register_apb_mul(NULL, "apb2_mul", "apb2_div",
1801                              CLK_SET_RATE_PARENT, 15);
1802
1803         clks[SYSTICK] = clk_hw_register_fixed_factor(NULL, "systick", "ahb_div",
1804                                                   0, 1, 8);
1805         clks[FCLK] = clk_hw_register_fixed_factor(NULL, "fclk", "ahb_div",
1806                                                0, 1, 1);
1807
1808         for (n = 0; n < data->gates_num; n++) {
1809                 const struct stm32f4_gate_data *gd;
1810                 unsigned int secondary;
1811                 int idx;
1812
1813                 gd = &data->gates_data[n];
1814                 secondary = 8 * (gd->offset - STM32F4_RCC_AHB1ENR) +
1815                         gd->bit_idx;
1816                 idx = stm32f4_rcc_lookup_clk_idx(0, secondary);
1817
1818                 if (idx < 0)
1819                         goto fail;
1820
1821                 clks[idx] = clk_hw_register_gate(
1822                     NULL, gd->name, gd->parent_name, gd->flags,
1823                     base + gd->offset, gd->bit_idx, 0, &stm32f4_clk_lock);
1824
1825                 if (IS_ERR(clks[idx])) {
1826                         pr_err("%pOF: Unable to register leaf clock %s\n",
1827                                np, gd->name);
1828                         goto fail;
1829                 }
1830         }
1831
1832         clks[CLK_LSI] = clk_register_rgate(NULL, "lsi", "clk-lsi", 0,
1833                         base + STM32F4_RCC_CSR, 0, 1, 0, &stm32f4_clk_lock);
1834
1835         if (IS_ERR(clks[CLK_LSI])) {
1836                 pr_err("Unable to register lsi clock\n");
1837                 goto fail;
1838         }
1839
1840         clks[CLK_LSE] = clk_register_rgate(NULL, "lse", "clk-lse", 0,
1841                         base + STM32F4_RCC_BDCR, 0, 1, 0, &stm32f4_clk_lock);
1842
1843         if (IS_ERR(clks[CLK_LSE])) {
1844                 pr_err("Unable to register lse clock\n");
1845                 goto fail;
1846         }
1847
1848         clks[CLK_HSE_RTC] = clk_hw_register_divider(NULL, "hse-rtc", "clk-hse",
1849                         0, base + STM32F4_RCC_CFGR, 16, 5, 0,
1850                         &stm32f4_clk_lock);
1851
1852         if (IS_ERR(clks[CLK_HSE_RTC])) {
1853                 pr_err("Unable to register hse-rtc clock\n");
1854                 goto fail;
1855         }
1856
1857         clks[CLK_RTC] = stm32_register_cclk(NULL, "rtc", rtc_parents, 4,
1858                         base + STM32F4_RCC_BDCR, 15, 8, 0, &stm32f4_clk_lock);
1859
1860         if (IS_ERR(clks[CLK_RTC])) {
1861                 pr_err("Unable to register rtc clock\n");
1862                 goto fail;
1863         }
1864
1865         for (n = 0; n < data->aux_clk_num; n++) {
1866                 const struct stm32_aux_clk *aux_clk;
1867                 struct clk_hw *hw;
1868
1869                 aux_clk = &data->aux_clk[n];
1870
1871                 hw = stm32_register_aux_clk(aux_clk->name,
1872                                 aux_clk->parent_names, aux_clk->num_parents,
1873                                 aux_clk->offset_mux, aux_clk->shift,
1874                                 aux_clk->mask, aux_clk->offset_gate,
1875                                 aux_clk->bit_idx, aux_clk->flags,
1876                                 &stm32f4_clk_lock);
1877
1878                 if (IS_ERR(hw)) {
1879                         pr_warn("Unable to register %s clk\n", aux_clk->name);
1880                         continue;
1881                 }
1882
1883                 if (aux_clk->idx != NO_IDX)
1884                         clks[aux_clk->idx] = hw;
1885         }
1886
1887         if (of_device_is_compatible(np, "st,stm32f746-rcc")) {
1888
1889                 clk_hw_register_fixed_factor(NULL, "hsi_div488", "hsi", 0,
1890                                 1, 488);
1891
1892                 clks[CLK_PLL_SRC] = pll_src_hw;
1893         }
1894
1895         of_clk_add_hw_provider(np, stm32f4_rcc_lookup_clk, NULL);
1896
1897         return;
1898 fail:
1899         kfree(clks);
1900         iounmap(base);
1901 }
1902 CLK_OF_DECLARE_DRIVER(stm32f42xx_rcc, "st,stm32f42xx-rcc", stm32f4_rcc_init);
1903 CLK_OF_DECLARE_DRIVER(stm32f46xx_rcc, "st,stm32f469-rcc", stm32f4_rcc_init);
1904 CLK_OF_DECLARE_DRIVER(stm32f746_rcc, "st,stm32f746-rcc", stm32f4_rcc_init);
1905 CLK_OF_DECLARE_DRIVER(stm32f769_rcc, "st,stm32f769-rcc", stm32f4_rcc_init);