drivers/clk/samsung/clk-s3c2443.c

   1 /*
   2  * Copyright (c) 2013 Heiko Stuebner <heiko@sntech.de>
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License version 2 as
   6  * published by the Free Software Foundation.
   7  *
   8  * Common Clock Framework support for S3C2443 and following SoCs.
   9  */
  10
  11 #include <linux/clk-provider.h>
  12 #include <linux/of.h>
  13 #include <linux/of_address.h>
  14 #include <linux/syscore_ops.h>
  15 #include <linux/reboot.h>
  16
  17 #include <dt-bindings/clock/s3c2443.h>
  18
  19 #include "clk.h"
  20 #include "clk-pll.h"
  21
  22 /* S3C2416 clock controller register offsets */
  23 #define LOCKCON0        0x00
  24 #define LOCKCON1        0x04
  25 #define MPLLCON         0x10
  26 #define EPLLCON         0x18
  27 #define EPLLCON_K       0x1C
  28 #define CLKSRC          0x20
  29 #define CLKDIV0         0x24
  30 #define CLKDIV1         0x28
  31 #define CLKDIV2         0x2C
  32 #define HCLKCON         0x30
  33 #define PCLKCON         0x34
  34 #define SCLKCON         0x38
  35 #define SWRST           0x44
  36
  37 /* the soc types */
  38 enum supported_socs {
  39         S3C2416,
  40         S3C2443,
  41         S3C2450,
  42 };
  43
  44 /* list of PLLs to be registered */
  45 enum s3c2443_plls {
  46         mpll, epll,
  47 };
  48
  49 static void __iomem *reg_base;
  50
  51 #ifdef CONFIG_PM_SLEEP
  52 static struct samsung_clk_reg_dump *s3c2443_save;
  53
  54 /*
  55  * list of controller registers to be saved and restored during a
  56  * suspend/resume cycle.
  57  */
  58 static unsigned long s3c2443_clk_regs[] __initdata = {
  59         LOCKCON0,
  60         LOCKCON1,
  61         MPLLCON,
  62         EPLLCON,
  63         EPLLCON_K,
  64         CLKSRC,
  65         CLKDIV0,
  66         CLKDIV1,
  67         CLKDIV2,
  68         PCLKCON,
  69         HCLKCON,
  70         SCLKCON,
  71 };
  72
  73 static int s3c2443_clk_suspend(void)
  74 {
  75         samsung_clk_save(reg_base, s3c2443_save,
  76                                 ARRAY_SIZE(s3c2443_clk_regs));
  77
  78         return 0;
  79 }
  80
  81 static void s3c2443_clk_resume(void)
  82 {
  83         samsung_clk_restore(reg_base, s3c2443_save,
  84                                 ARRAY_SIZE(s3c2443_clk_regs));
  85 }
  86
  87 static struct syscore_ops s3c2443_clk_syscore_ops = {
  88         .suspend = s3c2443_clk_suspend,
  89         .resume = s3c2443_clk_resume,
  90 };
  91
  92 static void s3c2443_clk_sleep_init(void)
  93 {
  94         s3c2443_save = samsung_clk_alloc_reg_dump(s3c2443_clk_regs,
  95                                                 ARRAY_SIZE(s3c2443_clk_regs));
  96         if (!s3c2443_save) {
  97                 pr_warn("%s: failed to allocate sleep save data, no sleep support!\n",
  98                         __func__);
  99                 return;
 100         }
 101
 102         register_syscore_ops(&s3c2443_clk_syscore_ops);
 103         return;
 104 }
 105 #else
 106 static void s3c2443_clk_sleep_init(void) {}
 107 #endif
 108
 109 PNAME(epllref_p) = { "mpllref", "mpllref", "xti", "ext" };
 110 PNAME(esysclk_p) = { "epllref", "epll" };
 111 PNAME(mpllref_p) = { "xti", "mdivclk" };
 112 PNAME(msysclk_p) = { "mpllref", "mpll" };
 113 PNAME(armclk_p) = { "armdiv" , "hclk" };
 114 PNAME(i2s0_p) = { "div_i2s0", "ext_i2s", "epllref", "epllref" };
 115
 116 struct samsung_mux_clock s3c2443_common_muxes[] __initdata = {
 117         MUX(0, "epllref", epllref_p, CLKSRC, 7, 2),
 118         MUX(ESYSCLK, "esysclk", esysclk_p, CLKSRC, 6, 1),
 119         MUX(0, "mpllref", mpllref_p, CLKSRC, 3, 1),
 120         MUX_A(MSYSCLK, "msysclk", msysclk_p, CLKSRC, 4, 1, "msysclk"),
 121         MUX_A(ARMCLK, "armclk", armclk_p, CLKDIV0, 13, 1, "armclk"),
 122         MUX(0, "mux_i2s0", i2s0_p, CLKSRC, 14, 2),
 123 };
 124
 125 static struct clk_div_table hclk_d[] = {
 126         { .val = 0, .div = 1 },
 127         { .val = 1, .div = 2 },
 128         { .val = 3, .div = 4 },
 129         { /* sentinel */ },
 130 };
 131
 132 static struct clk_div_table mdivclk_d[] = {
 133         { .val = 0, .div = 1 },
 134         { .val = 1, .div = 3 },
 135         { .val = 2, .div = 5 },
 136         { .val = 3, .div = 7 },
 137         { .val = 4, .div = 9 },
 138         { .val = 5, .div = 11 },
 139         { .val = 6, .div = 13 },
 140         { .val = 7, .div = 15 },
 141         { /* sentinel */ },
 142 };
 143
 144 struct samsung_div_clock s3c2443_common_dividers[] __initdata = {
 145         DIV_T(0, "mdivclk", "xti", CLKDIV0, 6, 3, mdivclk_d),
 146         DIV(0, "prediv", "msysclk", CLKDIV0, 4, 2),
 147         DIV_T(HCLK, "hclk", "prediv", CLKDIV0, 0, 2, hclk_d),
 148         DIV(PCLK, "pclk", "hclk", CLKDIV0, 2, 1),
 149         DIV(0, "div_hsspi0_epll", "esysclk", CLKDIV1, 24, 2),
 150         DIV(0, "div_fimd", "esysclk", CLKDIV1, 16, 8),
 151         DIV(0, "div_i2s0", "esysclk", CLKDIV1, 12, 4),
 152         DIV(0, "div_uart", "esysclk", CLKDIV1, 8, 4),
 153         DIV(0, "div_hsmmc1", "esysclk", CLKDIV1, 6, 2),
 154         DIV(0, "div_usbhost", "esysclk", CLKDIV1, 4, 2),
 155 };
 156
 157 struct samsung_gate_clock s3c2443_common_gates[] __initdata = {
 158         GATE(SCLK_HSMMC_EXT, "sclk_hsmmcext", "ext", SCLKCON, 13, 0, 0),
 159         GATE(SCLK_HSMMC1, "sclk_hsmmc1", "div_hsmmc1", SCLKCON, 12, 0, 0),
 160         GATE(SCLK_FIMD, "sclk_fimd", "div_fimd", SCLKCON, 10, 0, 0),
 161         GATE(SCLK_I2S0, "sclk_i2s0", "mux_i2s0", SCLKCON, 9, 0, 0),
 162         GATE(SCLK_UART, "sclk_uart", "div_uart", SCLKCON, 8, 0, 0),
 163         GATE(SCLK_USBH, "sclk_usbhost", "div_usbhost", SCLKCON, 1, 0, 0),
 164         GATE(HCLK_DRAM, "dram", "hclk", HCLKCON, 19, CLK_IGNORE_UNUSED, 0),
 165         GATE(HCLK_SSMC, "ssmc", "hclk", HCLKCON, 18, CLK_IGNORE_UNUSED, 0),
 166         GATE(HCLK_HSMMC1, "hsmmc1", "hclk", HCLKCON, 16, 0, 0),
 167         GATE(HCLK_USBD, "usb-device", "hclk", HCLKCON, 12, 0, 0),
 168         GATE(HCLK_USBH, "usb-host", "hclk", HCLKCON, 11, 0, 0),
 169         GATE(HCLK_LCD, "lcd", "hclk", HCLKCON, 9, 0, 0),
 170         GATE(HCLK_DMA5, "dma5", "hclk", HCLKCON, 5, CLK_IGNORE_UNUSED, 0),
 171         GATE(HCLK_DMA4, "dma4", "hclk", HCLKCON, 4, CLK_IGNORE_UNUSED, 0),
 172         GATE(HCLK_DMA3, "dma3", "hclk", HCLKCON, 3, CLK_IGNORE_UNUSED, 0),
 173         GATE(HCLK_DMA2, "dma2", "hclk", HCLKCON, 2, CLK_IGNORE_UNUSED, 0),
 174         GATE(HCLK_DMA1, "dma1", "hclk", HCLKCON, 1, CLK_IGNORE_UNUSED, 0),
 175         GATE(HCLK_DMA0, "dma0", "hclk", HCLKCON, 0, CLK_IGNORE_UNUSED, 0),
 176         GATE(PCLK_GPIO, "gpio", "pclk", PCLKCON, 13, CLK_IGNORE_UNUSED, 0),
 177         GATE(PCLK_RTC, "rtc", "pclk", PCLKCON, 12, 0, 0),
 178         GATE(PCLK_WDT, "wdt", "pclk", PCLKCON, 11, 0, 0),
 179         GATE(PCLK_PWM, "pwm", "pclk", PCLKCON, 10, 0, 0),
 180         GATE(PCLK_I2S0, "i2s0", "pclk", PCLKCON, 9, 0, 0),
 181         GATE(PCLK_AC97, "ac97", "pclk", PCLKCON, 8, 0, 0),
 182         GATE(PCLK_ADC, "adc", "pclk", PCLKCON, 7, 0, 0),
 183         GATE(PCLK_SPI0, "spi0", "pclk", PCLKCON, 6, 0, 0),
 184         GATE(PCLK_I2C0, "i2c0", "pclk", PCLKCON, 4, 0, 0),
 185         GATE(PCLK_UART3, "uart3", "pclk", PCLKCON, 3, 0, 0),
 186         GATE(PCLK_UART2, "uart2", "pclk", PCLKCON, 2, 0, 0),
 187         GATE(PCLK_UART1, "uart1", "pclk", PCLKCON, 1, 0, 0),
 188         GATE(PCLK_UART0, "uart0", "pclk", PCLKCON, 0, 0, 0),
 189 };
 190
 191 struct samsung_clock_alias s3c2443_common_aliases[] __initdata = {
 192         ALIAS(HCLK, NULL, "hclk"),
 193         ALIAS(HCLK_SSMC, NULL, "nand"),
 194         ALIAS(PCLK_UART0, "s3c2440-uart.0", "uart"),
 195         ALIAS(PCLK_UART1, "s3c2440-uart.1", "uart"),
 196         ALIAS(PCLK_UART2, "s3c2440-uart.2", "uart"),
 197         ALIAS(PCLK_UART3, "s3c2440-uart.3", "uart"),
 198         ALIAS(PCLK_UART0, "s3c2440-uart.0", "clk_uart_baud2"),
 199         ALIAS(PCLK_UART1, "s3c2440-uart.1", "clk_uart_baud2"),
 200         ALIAS(PCLK_UART2, "s3c2440-uart.2", "clk_uart_baud2"),
 201         ALIAS(PCLK_UART3, "s3c2440-uart.3", "clk_uart_baud2"),
 202         ALIAS(SCLK_UART, NULL, "clk_uart_baud3"),
 203         ALIAS(PCLK_PWM, NULL, "timers"),
 204         ALIAS(PCLK_RTC, NULL, "rtc"),
 205         ALIAS(PCLK_WDT, NULL, "watchdog"),
 206         ALIAS(PCLK_ADC, NULL, "adc"),
 207         ALIAS(PCLK_I2C0, "s3c2410-i2c.0", "i2c"),
 208         ALIAS(HCLK_USBD, NULL, "usb-device"),
 209         ALIAS(HCLK_USBH, NULL, "usb-host"),
 210         ALIAS(SCLK_USBH, NULL, "usb-bus-host"),
 211         ALIAS(PCLK_SPI0, "s3c2443-spi.0", "spi"),
 212         ALIAS(PCLK_SPI0, "s3c2443-spi.0", "spi_busclk0"),
 213         ALIAS(HCLK_HSMMC1, "s3c-sdhci.1", "hsmmc"),
 214         ALIAS(HCLK_HSMMC1, "s3c-sdhci.1", "mmc_busclk.0"),
 215         ALIAS(PCLK_I2S0, "samsung-i2s.0", "iis"),
 216         ALIAS(SCLK_I2S0, NULL, "i2s-if"),
 217         ALIAS(HCLK_LCD, NULL, "lcd"),
 218         ALIAS(SCLK_FIMD, NULL, "sclk_fimd"),
 219 };
 220
 221 /* S3C2416 specific clocks */
 222
 223 static struct samsung_pll_clock s3c2416_pll_clks[] __initdata = {
 224         [mpll] = PLL(pll_6552_s3c2416, 0, "mpll", "mpllref",
 225                                                 LOCKCON0, MPLLCON, NULL),
 226         [epll] = PLL(pll_6553, 0, "epll", "epllref",
 227                                                 LOCKCON1, EPLLCON, NULL),
 228 };
 229
 230 PNAME(s3c2416_hsmmc0_p) = { "sclk_hsmmc0", "sclk_hsmmcext" };
 231 PNAME(s3c2416_hsmmc1_p) = { "sclk_hsmmc1", "sclk_hsmmcext" };
 232 PNAME(s3c2416_hsspi0_p) = { "hsspi0_epll", "hsspi0_mpll" };
 233
 234 static struct clk_div_table armdiv_s3c2416_d[] = {
 235         { .val = 0, .div = 1 },
 236         { .val = 1, .div = 2 },
 237         { .val = 2, .div = 3 },
 238         { .val = 3, .div = 4 },
 239         { .val = 5, .div = 6 },
 240         { .val = 7, .div = 8 },
 241         { /* sentinel */ },
 242 };
 243
 244 struct samsung_div_clock s3c2416_dividers[] __initdata = {
 245         DIV_T(ARMDIV, "armdiv", "msysclk", CLKDIV0, 9, 3, armdiv_s3c2416_d),
 246         DIV(0, "div_hsspi0_mpll", "msysclk", CLKDIV2, 0, 4),
 247         DIV(0, "div_hsmmc0", "esysclk", CLKDIV2, 6, 2),
 248 };
 249
 250 struct samsung_mux_clock s3c2416_muxes[] __initdata = {
 251         MUX(MUX_HSMMC0, "mux_hsmmc0", s3c2416_hsmmc0_p, CLKSRC, 16, 1),
 252         MUX(MUX_HSMMC1, "mux_hsmmc1", s3c2416_hsmmc1_p, CLKSRC, 17, 1),
 253         MUX(MUX_HSSPI0, "mux_hsspi0", s3c2416_hsspi0_p, CLKSRC, 18, 1),
 254 };
 255
 256 struct samsung_gate_clock s3c2416_gates[] __initdata = {
 257         GATE(0, "hsspi0_mpll", "div_hsspi0_mpll", SCLKCON, 19, 0, 0),
 258         GATE(0, "hsspi0_epll", "div_hsspi0_epll", SCLKCON, 14, 0, 0),
 259         GATE(0, "sclk_hsmmc0", "div_hsmmc0", SCLKCON, 6, 0, 0),
 260         GATE(HCLK_2D, "2d", "hclk", HCLKCON, 20, 0, 0),
 261         GATE(HCLK_HSMMC0, "hsmmc0", "hclk", HCLKCON, 15, 0, 0),
 262         GATE(HCLK_IROM, "irom", "hclk", HCLKCON, 13, CLK_IGNORE_UNUSED, 0),
 263         GATE(PCLK_PCM, "pcm", "pclk", PCLKCON, 19, 0, 0),
 264 };
 265
 266 struct samsung_clock_alias s3c2416_aliases[] __initdata = {
 267         ALIAS(HCLK_HSMMC0, "s3c-sdhci.0", "hsmmc"),
 268         ALIAS(HCLK_HSMMC0, "s3c-sdhci.0", "mmc_busclk.0"),
 269         ALIAS(MUX_HSMMC0, "s3c-sdhci.0", "mmc_busclk.2"),
 270         ALIAS(MUX_HSMMC1, "s3c-sdhci.1", "mmc_busclk.2"),
 271         ALIAS(MUX_HSSPI0, "s3c2443-spi.0", "spi_busclk2"),
 272         ALIAS(ARMDIV, NULL, "armdiv"),
 273 };
 274
 275 /* S3C2443 specific clocks */
 276
 277 static struct samsung_pll_clock s3c2443_pll_clks[] __initdata = {
 278         [mpll] = PLL(pll_3000, 0, "mpll", "mpllref",
 279                                                 LOCKCON0, MPLLCON, NULL),
 280         [epll] = PLL(pll_2126, 0, "epll", "epllref",
 281                                                 LOCKCON1, EPLLCON, NULL),
 282 };
 283
 284 static struct clk_div_table armdiv_s3c2443_d[] = {
 285         { .val = 0, .div = 1 },
 286         { .val = 8, .div = 2 },
 287         { .val = 2, .div = 3 },
 288         { .val = 9, .div = 4 },
 289         { .val = 10, .div = 6 },
 290         { .val = 11, .div = 8 },
 291         { .val = 13, .div = 12 },
 292         { .val = 15, .div = 16 },
 293         { /* sentinel */ },
 294 };
 295
 296 struct samsung_div_clock s3c2443_dividers[] __initdata = {
 297         DIV_T(ARMDIV, "armdiv", "msysclk", CLKDIV0, 9, 4, armdiv_s3c2443_d),
 298         DIV(0, "div_cam", "esysclk", CLKDIV1, 26, 4),
 299 };
 300
 301 struct samsung_gate_clock s3c2443_gates[] __initdata = {
 302         GATE(SCLK_HSSPI0, "sclk_hsspi0", "div_hsspi0_epll", SCLKCON, 14, 0, 0),
 303         GATE(SCLK_CAM, "sclk_cam", "div_cam", SCLKCON, 11, 0, 0),
 304         GATE(HCLK_CFC, "cfc", "hclk", HCLKCON, 17, CLK_IGNORE_UNUSED, 0),
 305         GATE(HCLK_CAM, "cam", "hclk", HCLKCON, 8, 0, 0),
 306         GATE(PCLK_SPI1, "spi1", "pclk", PCLKCON, 15, 0, 0),
 307         GATE(PCLK_SDI, "sdi", "pclk", PCLKCON, 5, 0, 0),
 308 };
 309
 310 struct samsung_clock_alias s3c2443_aliases[] __initdata = {
 311         ALIAS(SCLK_HSSPI0, "s3c2443-spi.0", "spi_busclk2"),
 312         ALIAS(SCLK_HSMMC1, "s3c-sdhci.1", "mmc_busclk.2"),
 313         ALIAS(SCLK_CAM, NULL, "camif-upll"),
 314         ALIAS(PCLK_SPI1, "s3c2410-spi.0", "spi"),
 315         ALIAS(PCLK_SDI, NULL, "sdi"),
 316         ALIAS(HCLK_CFC, NULL, "cfc"),
 317         ALIAS(ARMDIV, NULL, "armdiv"),
 318 };
 319
 320 /* S3C2450 specific clocks */
 321
 322 PNAME(s3c2450_cam_p) = { "div_cam", "hclk" };
 323 PNAME(s3c2450_hsspi1_p) = { "hsspi1_epll", "hsspi1_mpll" };
 324 PNAME(i2s1_p) = { "div_i2s1", "ext_i2s", "epllref", "epllref" };
 325
 326 struct samsung_div_clock s3c2450_dividers[] __initdata = {
 327         DIV(0, "div_cam", "esysclk", CLKDIV1, 26, 4),
 328         DIV(0, "div_hsspi1_epll", "esysclk", CLKDIV2, 24, 2),
 329         DIV(0, "div_hsspi1_mpll", "msysclk", CLKDIV2, 16, 4),
 330         DIV(0, "div_i2s1", "esysclk", CLKDIV2, 12, 4),
 331 };
 332
 333 struct samsung_mux_clock s3c2450_muxes[] __initdata = {
 334         MUX(0, "mux_cam", s3c2450_cam_p, CLKSRC, 20, 1),
 335         MUX(MUX_HSSPI1, "mux_hsspi1", s3c2450_hsspi1_p, CLKSRC, 19, 1),
 336         MUX(0, "mux_i2s1", i2s1_p, CLKSRC, 12, 2),
 337 };
 338
 339 struct samsung_gate_clock s3c2450_gates[] __initdata = {
 340         GATE(SCLK_I2S1, "sclk_i2s1", "div_i2s1", SCLKCON, 5, 0, 0),
 341         GATE(HCLK_CFC, "cfc", "hclk", HCLKCON, 17, 0, 0),
 342         GATE(HCLK_CAM, "cam", "hclk", HCLKCON, 8, 0, 0),
 343         GATE(HCLK_DMA7, "dma7", "hclk", HCLKCON, 7, CLK_IGNORE_UNUSED, 0),
 344         GATE(HCLK_DMA6, "dma6", "hclk", HCLKCON, 6, CLK_IGNORE_UNUSED, 0),
 345         GATE(PCLK_I2S1, "i2s1", "pclk", PCLKCON, 17, 0, 0),
 346         GATE(PCLK_I2C1, "i2c1", "pclk", PCLKCON, 16, 0, 0),
 347         GATE(PCLK_SPI1, "spi1", "pclk", PCLKCON, 14, 0, 0),
 348 };
 349
 350 struct samsung_clock_alias s3c2450_aliases[] __initdata = {
 351         ALIAS(PCLK_SPI1, "s3c2443-spi.1", "spi"),
 352         ALIAS(PCLK_SPI1, "s3c2443-spi.1", "spi_busclk0"),
 353         ALIAS(MUX_HSSPI1, "s3c2443-spi.1", "spi_busclk2"),
 354         ALIAS(PCLK_I2C1, "s3c2410-i2c.1", "i2c"),
 355 };
 356
 357 static int s3c2443_restart(struct notifier_block *this,
 358                            unsigned long mode, void *cmd)
 359 {
 360         __raw_writel(0x533c2443, reg_base + SWRST);
 361         return NOTIFY_DONE;
 362 }
 363
 364 static struct notifier_block s3c2443_restart_handler = {
 365         .notifier_call = s3c2443_restart,
 366         .priority = 129,
 367 };
 368
 369 /*
 370  * fixed rate clocks generated outside the soc
 371  * Only necessary until the devicetree-move is complete
 372  */
 373 struct samsung_fixed_rate_clock s3c2443_common_frate_clks[] __initdata = {
 374         FRATE(0, "xti", NULL, 0, 0),
 375         FRATE(0, "ext", NULL, 0, 0),
 376         FRATE(0, "ext_i2s", NULL, 0, 0),
 377         FRATE(0, "ext_uart", NULL, 0, 0),
 378 };
 379
 380 static void __init s3c2443_common_clk_register_fixed_ext(
 381                 struct samsung_clk_provider *ctx, unsigned long xti_f)
 382 {
 383         s3c2443_common_frate_clks[0].fixed_rate = xti_f;
 384         samsung_clk_register_fixed_rate(ctx, s3c2443_common_frate_clks,
 385                                 ARRAY_SIZE(s3c2443_common_frate_clks));
 386 }
 387
 388 void __init s3c2443_common_clk_init(struct device_node *np, unsigned long xti_f,
 389                                     int current_soc,
 390                                     void __iomem *base)
 391 {
 392         struct samsung_clk_provider *ctx;
 393         int ret;
 394         reg_base = base;
 395
 396         if (np) {
 397                 reg_base = of_iomap(np, 0);
 398                 if (!reg_base)
 399                         panic("%s: failed to map registers\n", __func__);
 400         }
 401
 402         ctx = samsung_clk_init(np, reg_base, NR_CLKS);
 403
 404         /* Register external clocks only in non-dt cases */
 405         if (!np)
 406                 s3c2443_common_clk_register_fixed_ext(ctx, xti_f);
 407
 408         /* Register PLLs. */
 409         if (current_soc == S3C2416 || current_soc == S3C2450)
 410                 samsung_clk_register_pll(ctx, s3c2416_pll_clks,
 411                                 ARRAY_SIZE(s3c2416_pll_clks), reg_base);
 412         else
 413                 samsung_clk_register_pll(ctx, s3c2443_pll_clks,
 414                                 ARRAY_SIZE(s3c2443_pll_clks), reg_base);
 415
 416         /* Register common internal clocks. */
 417         samsung_clk_register_mux(ctx, s3c2443_common_muxes,
 418                         ARRAY_SIZE(s3c2443_common_muxes));
 419         samsung_clk_register_div(ctx, s3c2443_common_dividers,
 420                         ARRAY_SIZE(s3c2443_common_dividers));
 421         samsung_clk_register_gate(ctx, s3c2443_common_gates,
 422                 ARRAY_SIZE(s3c2443_common_gates));
 423         samsung_clk_register_alias(ctx, s3c2443_common_aliases,
 424                 ARRAY_SIZE(s3c2443_common_aliases));
 425
 426         /* Register SoC-specific clocks. */
 427         switch (current_soc) {
 428         case S3C2450:
 429                 samsung_clk_register_div(ctx, s3c2450_dividers,
 430                                 ARRAY_SIZE(s3c2450_dividers));
 431                 samsung_clk_register_mux(ctx, s3c2450_muxes,
 432                                 ARRAY_SIZE(s3c2450_muxes));
 433                 samsung_clk_register_gate(ctx, s3c2450_gates,
 434                                 ARRAY_SIZE(s3c2450_gates));
 435                 samsung_clk_register_alias(ctx, s3c2450_aliases,
 436                                 ARRAY_SIZE(s3c2450_aliases));
 437                 /* fall through, as s3c2450 extends the s3c2416 clocks */
 438         case S3C2416:
 439                 samsung_clk_register_div(ctx, s3c2416_dividers,
 440                                 ARRAY_SIZE(s3c2416_dividers));
 441                 samsung_clk_register_mux(ctx, s3c2416_muxes,
 442                                 ARRAY_SIZE(s3c2416_muxes));
 443                 samsung_clk_register_gate(ctx, s3c2416_gates,
 444                                 ARRAY_SIZE(s3c2416_gates));
 445                 samsung_clk_register_alias(ctx, s3c2416_aliases,
 446                                 ARRAY_SIZE(s3c2416_aliases));
 447                 break;
 448         case S3C2443:
 449                 samsung_clk_register_div(ctx, s3c2443_dividers,
 450                                 ARRAY_SIZE(s3c2443_dividers));
 451                 samsung_clk_register_gate(ctx, s3c2443_gates,
 452                                 ARRAY_SIZE(s3c2443_gates));
 453                 samsung_clk_register_alias(ctx, s3c2443_aliases,
 454                                 ARRAY_SIZE(s3c2443_aliases));
 455                 break;
 456         }
 457
 458         s3c2443_clk_sleep_init();
 459
 460         samsung_clk_of_add_provider(np, ctx);
 461
 462         ret = register_restart_handler(&s3c2443_restart_handler);
 463         if (ret)
 464                 pr_warn("cannot register restart handler, %d\n", ret);
 465 }
 466
 467 static void __init s3c2416_clk_init(struct device_node *np)
 468 {
 469         s3c2443_common_clk_init(np, 0, S3C2416, 0);
 470 }
 471 CLK_OF_DECLARE(s3c2416_clk, "samsung,s3c2416-clock", s3c2416_clk_init);
 472
 473 static void __init s3c2443_clk_init(struct device_node *np)
 474 {
 475         s3c2443_common_clk_init(np, 0, S3C2443, 0);
 476 }
 477 CLK_OF_DECLARE(s3c2443_clk, "samsung,s3c2443-clock", s3c2443_clk_init);
 478
 479 static void __init s3c2450_clk_init(struct device_node *np)
 480 {
 481         s3c2443_common_clk_init(np, 0, S3C2450, 0);
 482 }
 483 CLK_OF_DECLARE(s3c2450_clk, "samsung,s3c2450-clock", s3c2450_clk_init);