linux/drivers/clk/samsung/clk-s3c2443.c
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   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.h>
  12#include <linux/clkdev.h>
  13#include <linux/clk-provider.h>
  14#include <linux/of.h>
  15#include <linux/of_address.h>
  16#include <linux/syscore_ops.h>
  17#include <linux/reboot.h>
  18
  19#include <dt-bindings/clock/s3c2443.h>
  20
  21#include "clk.h"
  22#include "clk-pll.h"
  23
  24/* S3C2416 clock controller register offsets */
  25#define LOCKCON0        0x00
  26#define LOCKCON1        0x04
  27#define MPLLCON         0x10
  28#define EPLLCON         0x18
  29#define EPLLCON_K       0x1C
  30#define CLKSRC          0x20
  31#define CLKDIV0         0x24
  32#define CLKDIV1         0x28
  33#define CLKDIV2         0x2C
  34#define HCLKCON         0x30
  35#define PCLKCON         0x34
  36#define SCLKCON         0x38
  37#define SWRST           0x44
  38
  39/* the soc types */
  40enum supported_socs {
  41        S3C2416,
  42        S3C2443,
  43        S3C2450,
  44};
  45
  46/* list of PLLs to be registered */
  47enum s3c2443_plls {
  48        mpll, epll,
  49};
  50
  51static void __iomem *reg_base;
  52
  53#ifdef CONFIG_PM_SLEEP
  54static struct samsung_clk_reg_dump *s3c2443_save;
  55
  56/*
  57 * list of controller registers to be saved and restored during a
  58 * suspend/resume cycle.
  59 */
  60static unsigned long s3c2443_clk_regs[] __initdata = {
  61        LOCKCON0,
  62        LOCKCON1,
  63        MPLLCON,
  64        EPLLCON,
  65        EPLLCON_K,
  66        CLKSRC,
  67        CLKDIV0,
  68        CLKDIV1,
  69        CLKDIV2,
  70        PCLKCON,
  71        HCLKCON,
  72        SCLKCON,
  73};
  74
  75static int s3c2443_clk_suspend(void)
  76{
  77        samsung_clk_save(reg_base, s3c2443_save,
  78                                ARRAY_SIZE(s3c2443_clk_regs));
  79
  80        return 0;
  81}
  82
  83static void s3c2443_clk_resume(void)
  84{
  85        samsung_clk_restore(reg_base, s3c2443_save,
  86                                ARRAY_SIZE(s3c2443_clk_regs));
  87}
  88
  89static struct syscore_ops s3c2443_clk_syscore_ops = {
  90        .suspend = s3c2443_clk_suspend,
  91        .resume = s3c2443_clk_resume,
  92};
  93
  94static void s3c2443_clk_sleep_init(void)
  95{
  96        s3c2443_save = samsung_clk_alloc_reg_dump(s3c2443_clk_regs,
  97                                                ARRAY_SIZE(s3c2443_clk_regs));
  98        if (!s3c2443_save) {
  99                pr_warn("%s: failed to allocate sleep save data, no sleep support!\n",
 100                        __func__);
 101                return;
 102        }
 103
 104        register_syscore_ops(&s3c2443_clk_syscore_ops);
 105        return;
 106}
 107#else
 108static void s3c2443_clk_sleep_init(void) {}
 109#endif
 110
 111PNAME(epllref_p) = { "mpllref", "mpllref", "xti", "ext" };
 112PNAME(esysclk_p) = { "epllref", "epll" };
 113PNAME(mpllref_p) = { "xti", "mdivclk" };
 114PNAME(msysclk_p) = { "mpllref", "mpll" };
 115PNAME(armclk_p) = { "armdiv" , "hclk" };
 116PNAME(i2s0_p) = { "div_i2s0", "ext_i2s", "epllref", "epllref" };
 117
 118struct samsung_mux_clock s3c2443_common_muxes[] __initdata = {
 119        MUX(0, "epllref", epllref_p, CLKSRC, 7, 2),
 120        MUX(ESYSCLK, "esysclk", esysclk_p, CLKSRC, 6, 1),
 121        MUX(0, "mpllref", mpllref_p, CLKSRC, 3, 1),
 122        MUX_A(MSYSCLK, "msysclk", msysclk_p, CLKSRC, 4, 1, "msysclk"),
 123        MUX_A(ARMCLK, "armclk", armclk_p, CLKDIV0, 13, 1, "armclk"),
 124        MUX(0, "mux_i2s0", i2s0_p, CLKSRC, 14, 2),
 125};
 126
 127static struct clk_div_table hclk_d[] = {
 128        { .val = 0, .div = 1 },
 129        { .val = 1, .div = 2 },
 130        { .val = 3, .div = 4 },
 131        { /* sentinel */ },
 132};
 133
 134static struct clk_div_table mdivclk_d[] = {
 135        { .val = 0, .div = 1 },
 136        { .val = 1, .div = 3 },
 137        { .val = 2, .div = 5 },
 138        { .val = 3, .div = 7 },
 139        { .val = 4, .div = 9 },
 140        { .val = 5, .div = 11 },
 141        { .val = 6, .div = 13 },
 142        { .val = 7, .div = 15 },
 143        { /* sentinel */ },
 144};
 145
 146struct samsung_div_clock s3c2443_common_dividers[] __initdata = {
 147        DIV_T(0, "mdivclk", "xti", CLKDIV0, 6, 3, mdivclk_d),
 148        DIV(0, "prediv", "msysclk", CLKDIV0, 4, 2),
 149        DIV_T(HCLK, "hclk", "prediv", CLKDIV0, 0, 2, hclk_d),
 150        DIV(PCLK, "pclk", "hclk", CLKDIV0, 2, 1),
 151        DIV(0, "div_hsspi0_epll", "esysclk", CLKDIV1, 24, 2),
 152        DIV(0, "div_fimd", "esysclk", CLKDIV1, 16, 8),
 153        DIV(0, "div_i2s0", "esysclk", CLKDIV1, 12, 4),
 154        DIV(0, "div_uart", "esysclk", CLKDIV1, 8, 4),
 155        DIV(0, "div_hsmmc1", "esysclk", CLKDIV1, 6, 2),
 156        DIV(0, "div_usbhost", "esysclk", CLKDIV1, 4, 2),
 157};
 158
 159struct samsung_gate_clock s3c2443_common_gates[] __initdata = {
 160        GATE(SCLK_HSMMC_EXT, "sclk_hsmmcext", "ext", SCLKCON, 13, 0, 0),
 161        GATE(SCLK_HSMMC1, "sclk_hsmmc1", "div_hsmmc1", SCLKCON, 12, 0, 0),
 162        GATE(SCLK_FIMD, "sclk_fimd", "div_fimd", SCLKCON, 10, 0, 0),
 163        GATE(SCLK_I2S0, "sclk_i2s0", "mux_i2s0", SCLKCON, 9, 0, 0),
 164        GATE(SCLK_UART, "sclk_uart", "div_uart", SCLKCON, 8, 0, 0),
 165        GATE(SCLK_USBH, "sclk_usbhost", "div_usbhost", SCLKCON, 1, 0, 0),
 166        GATE(HCLK_DRAM, "dram", "hclk", HCLKCON, 19, CLK_IGNORE_UNUSED, 0),
 167        GATE(HCLK_SSMC, "ssmc", "hclk", HCLKCON, 18, CLK_IGNORE_UNUSED, 0),
 168        GATE(HCLK_HSMMC1, "hsmmc1", "hclk", HCLKCON, 16, 0, 0),
 169        GATE(HCLK_USBD, "usb-device", "hclk", HCLKCON, 12, 0, 0),
 170        GATE(HCLK_USBH, "usb-host", "hclk", HCLKCON, 11, 0, 0),
 171        GATE(HCLK_LCD, "lcd", "hclk", HCLKCON, 9, 0, 0),
 172        GATE(HCLK_DMA5, "dma5", "hclk", HCLKCON, 5, CLK_IGNORE_UNUSED, 0),
 173        GATE(HCLK_DMA4, "dma4", "hclk", HCLKCON, 4, CLK_IGNORE_UNUSED, 0),
 174        GATE(HCLK_DMA3, "dma3", "hclk", HCLKCON, 3, CLK_IGNORE_UNUSED, 0),
 175        GATE(HCLK_DMA2, "dma2", "hclk", HCLKCON, 2, CLK_IGNORE_UNUSED, 0),
 176        GATE(HCLK_DMA1, "dma1", "hclk", HCLKCON, 1, CLK_IGNORE_UNUSED, 0),
 177        GATE(HCLK_DMA0, "dma0", "hclk", HCLKCON, 0, CLK_IGNORE_UNUSED, 0),
 178        GATE(PCLK_GPIO, "gpio", "pclk", PCLKCON, 13, CLK_IGNORE_UNUSED, 0),
 179        GATE(PCLK_RTC, "rtc", "pclk", PCLKCON, 12, 0, 0),
 180        GATE(PCLK_WDT, "wdt", "pclk", PCLKCON, 11, 0, 0),
 181        GATE(PCLK_PWM, "pwm", "pclk", PCLKCON, 10, 0, 0),
 182        GATE(PCLK_I2S0, "i2s0", "pclk", PCLKCON, 9, 0, 0),
 183        GATE(PCLK_AC97, "ac97", "pclk", PCLKCON, 8, 0, 0),
 184        GATE(PCLK_ADC, "adc", "pclk", PCLKCON, 7, 0, 0),
 185        GATE(PCLK_SPI0, "spi0", "pclk", PCLKCON, 6, 0, 0),
 186        GATE(PCLK_I2C0, "i2c0", "pclk", PCLKCON, 4, 0, 0),
 187        GATE(PCLK_UART3, "uart3", "pclk", PCLKCON, 3, 0, 0),
 188        GATE(PCLK_UART2, "uart2", "pclk", PCLKCON, 2, 0, 0),
 189        GATE(PCLK_UART1, "uart1", "pclk", PCLKCON, 1, 0, 0),
 190        GATE(PCLK_UART0, "uart0", "pclk", PCLKCON, 0, 0, 0),
 191};
 192
 193struct samsung_clock_alias s3c2443_common_aliases[] __initdata = {
 194        ALIAS(HCLK, NULL, "hclk"),
 195        ALIAS(HCLK_SSMC, NULL, "nand"),
 196        ALIAS(PCLK_UART0, "s3c2440-uart.0", "uart"),
 197        ALIAS(PCLK_UART1, "s3c2440-uart.1", "uart"),
 198        ALIAS(PCLK_UART2, "s3c2440-uart.2", "uart"),
 199        ALIAS(PCLK_UART3, "s3c2440-uart.3", "uart"),
 200        ALIAS(PCLK_UART0, "s3c2440-uart.0", "clk_uart_baud2"),
 201        ALIAS(PCLK_UART1, "s3c2440-uart.1", "clk_uart_baud2"),
 202        ALIAS(PCLK_UART2, "s3c2440-uart.2", "clk_uart_baud2"),
 203        ALIAS(PCLK_UART3, "s3c2440-uart.3", "clk_uart_baud2"),
 204        ALIAS(SCLK_UART, NULL, "clk_uart_baud3"),
 205        ALIAS(PCLK_PWM, NULL, "timers"),
 206        ALIAS(PCLK_RTC, NULL, "rtc"),
 207        ALIAS(PCLK_WDT, NULL, "watchdog"),
 208        ALIAS(PCLK_ADC, NULL, "adc"),
 209        ALIAS(PCLK_I2C0, "s3c2410-i2c.0", "i2c"),
 210        ALIAS(HCLK_USBD, NULL, "usb-device"),
 211        ALIAS(HCLK_USBH, NULL, "usb-host"),
 212        ALIAS(SCLK_USBH, NULL, "usb-bus-host"),
 213        ALIAS(PCLK_SPI0, "s3c2443-spi.0", "spi"),
 214        ALIAS(PCLK_SPI0, "s3c2443-spi.0", "spi_busclk0"),
 215        ALIAS(HCLK_HSMMC1, "s3c-sdhci.1", "hsmmc"),
 216        ALIAS(HCLK_HSMMC1, "s3c-sdhci.1", "mmc_busclk.0"),
 217        ALIAS(PCLK_I2S0, "samsung-i2s.0", "iis"),
 218        ALIAS(SCLK_I2S0, NULL, "i2s-if"),
 219        ALIAS(HCLK_LCD, NULL, "lcd"),
 220        ALIAS(SCLK_FIMD, NULL, "sclk_fimd"),
 221};
 222
 223/* S3C2416 specific clocks */
 224
 225static struct samsung_pll_clock s3c2416_pll_clks[] __initdata = {
 226        [mpll] = PLL(pll_6552_s3c2416, 0, "mpll", "mpllref",
 227                                                LOCKCON0, MPLLCON, NULL),
 228        [epll] = PLL(pll_6553, 0, "epll", "epllref",
 229                                                LOCKCON1, EPLLCON, NULL),
 230};
 231
 232PNAME(s3c2416_hsmmc0_p) = { "sclk_hsmmc0", "sclk_hsmmcext" };
 233PNAME(s3c2416_hsmmc1_p) = { "sclk_hsmmc1", "sclk_hsmmcext" };
 234PNAME(s3c2416_hsspi0_p) = { "hsspi0_epll", "hsspi0_mpll" };
 235
 236static struct clk_div_table armdiv_s3c2416_d[] = {
 237        { .val = 0, .div = 1 },
 238        { .val = 1, .div = 2 },
 239        { .val = 2, .div = 3 },
 240        { .val = 3, .div = 4 },
 241        { .val = 5, .div = 6 },
 242        { .val = 7, .div = 8 },
 243        { /* sentinel */ },
 244};
 245
 246struct samsung_div_clock s3c2416_dividers[] __initdata = {
 247        DIV_T(ARMDIV, "armdiv", "msysclk", CLKDIV0, 9, 3, armdiv_s3c2416_d),
 248        DIV(0, "div_hsspi0_mpll", "msysclk", CLKDIV2, 0, 4),
 249        DIV(0, "div_hsmmc0", "esysclk", CLKDIV2, 6, 2),
 250};
 251
 252struct samsung_mux_clock s3c2416_muxes[] __initdata = {
 253        MUX(MUX_HSMMC0, "mux_hsmmc0", s3c2416_hsmmc0_p, CLKSRC, 16, 1),
 254        MUX(MUX_HSMMC1, "mux_hsmmc1", s3c2416_hsmmc1_p, CLKSRC, 17, 1),
 255        MUX(MUX_HSSPI0, "mux_hsspi0", s3c2416_hsspi0_p, CLKSRC, 18, 1),
 256};
 257
 258struct samsung_gate_clock s3c2416_gates[] __initdata = {
 259        GATE(0, "hsspi0_mpll", "div_hsspi0_mpll", SCLKCON, 19, 0, 0),
 260        GATE(0, "hsspi0_epll", "div_hsspi0_epll", SCLKCON, 14, 0, 0),
 261        GATE(0, "sclk_hsmmc0", "div_hsmmc0", SCLKCON, 6, 0, 0),
 262        GATE(HCLK_2D, "2d", "hclk", HCLKCON, 20, 0, 0),
 263        GATE(HCLK_HSMMC0, "hsmmc0", "hclk", HCLKCON, 15, 0, 0),
 264        GATE(HCLK_IROM, "irom", "hclk", HCLKCON, 13, CLK_IGNORE_UNUSED, 0),
 265        GATE(PCLK_PCM, "pcm", "pclk", PCLKCON, 19, 0, 0),
 266};
 267
 268struct samsung_clock_alias s3c2416_aliases[] __initdata = {
 269        ALIAS(HCLK_HSMMC0, "s3c-sdhci.0", "hsmmc"),
 270        ALIAS(HCLK_HSMMC0, "s3c-sdhci.0", "mmc_busclk.0"),
 271        ALIAS(MUX_HSMMC0, "s3c-sdhci.0", "mmc_busclk.2"),
 272        ALIAS(MUX_HSMMC1, "s3c-sdhci.1", "mmc_busclk.2"),
 273        ALIAS(MUX_HSSPI0, "s3c2443-spi.0", "spi_busclk2"),
 274        ALIAS(ARMDIV, NULL, "armdiv"),
 275};
 276
 277/* S3C2443 specific clocks */
 278
 279static struct samsung_pll_clock s3c2443_pll_clks[] __initdata = {
 280        [mpll] = PLL(pll_3000, 0, "mpll", "mpllref",
 281                                                LOCKCON0, MPLLCON, NULL),
 282        [epll] = PLL(pll_2126, 0, "epll", "epllref",
 283                                                LOCKCON1, EPLLCON, NULL),
 284};
 285
 286static struct clk_div_table armdiv_s3c2443_d[] = {
 287        { .val = 0, .div = 1 },
 288        { .val = 8, .div = 2 },
 289        { .val = 2, .div = 3 },
 290        { .val = 9, .div = 4 },
 291        { .val = 10, .div = 6 },
 292        { .val = 11, .div = 8 },
 293        { .val = 13, .div = 12 },
 294        { .val = 15, .div = 16 },
 295        { /* sentinel */ },
 296};
 297
 298struct samsung_div_clock s3c2443_dividers[] __initdata = {
 299        DIV_T(ARMDIV, "armdiv", "msysclk", CLKDIV0, 9, 4, armdiv_s3c2443_d),
 300        DIV(0, "div_cam", "esysclk", CLKDIV1, 26, 4),
 301};
 302
 303struct samsung_gate_clock s3c2443_gates[] __initdata = {
 304        GATE(SCLK_HSSPI0, "sclk_hsspi0", "div_hsspi0_epll", SCLKCON, 14, 0, 0),
 305        GATE(SCLK_CAM, "sclk_cam", "div_cam", SCLKCON, 11, 0, 0),
 306        GATE(HCLK_CFC, "cfc", "hclk", HCLKCON, 17, CLK_IGNORE_UNUSED, 0),
 307        GATE(HCLK_CAM, "cam", "hclk", HCLKCON, 8, 0, 0),
 308        GATE(PCLK_SPI1, "spi1", "pclk", PCLKCON, 15, 0, 0),
 309        GATE(PCLK_SDI, "sdi", "pclk", PCLKCON, 5, 0, 0),
 310};
 311
 312struct samsung_clock_alias s3c2443_aliases[] __initdata = {
 313        ALIAS(SCLK_HSSPI0, "s3c2443-spi.0", "spi_busclk2"),
 314        ALIAS(SCLK_HSMMC1, "s3c-sdhci.1", "mmc_busclk.2"),
 315        ALIAS(SCLK_CAM, NULL, "camif-upll"),
 316        ALIAS(PCLK_SPI1, "s3c2410-spi.0", "spi"),
 317        ALIAS(PCLK_SDI, NULL, "sdi"),
 318        ALIAS(HCLK_CFC, NULL, "cfc"),
 319        ALIAS(ARMDIV, NULL, "armdiv"),
 320};
 321
 322/* S3C2450 specific clocks */
 323
 324PNAME(s3c2450_cam_p) = { "div_cam", "hclk" };
 325PNAME(s3c2450_hsspi1_p) = { "hsspi1_epll", "hsspi1_mpll" };
 326PNAME(i2s1_p) = { "div_i2s1", "ext_i2s", "epllref", "epllref" };
 327
 328struct samsung_div_clock s3c2450_dividers[] __initdata = {
 329        DIV(0, "div_cam", "esysclk", CLKDIV1, 26, 4),
 330        DIV(0, "div_hsspi1_epll", "esysclk", CLKDIV2, 24, 2),
 331        DIV(0, "div_hsspi1_mpll", "msysclk", CLKDIV2, 16, 4),
 332        DIV(0, "div_i2s1", "esysclk", CLKDIV2, 12, 4),
 333};
 334
 335struct samsung_mux_clock s3c2450_muxes[] __initdata = {
 336        MUX(0, "mux_cam", s3c2450_cam_p, CLKSRC, 20, 1),
 337        MUX(MUX_HSSPI1, "mux_hsspi1", s3c2450_hsspi1_p, CLKSRC, 19, 1),
 338        MUX(0, "mux_i2s1", i2s1_p, CLKSRC, 12, 2),
 339};
 340
 341struct samsung_gate_clock s3c2450_gates[] __initdata = {
 342        GATE(SCLK_I2S1, "sclk_i2s1", "div_i2s1", SCLKCON, 5, 0, 0),
 343        GATE(HCLK_CFC, "cfc", "hclk", HCLKCON, 17, 0, 0),
 344        GATE(HCLK_CAM, "cam", "hclk", HCLKCON, 8, 0, 0),
 345        GATE(HCLK_DMA7, "dma7", "hclk", HCLKCON, 7, CLK_IGNORE_UNUSED, 0),
 346        GATE(HCLK_DMA6, "dma6", "hclk", HCLKCON, 6, CLK_IGNORE_UNUSED, 0),
 347        GATE(PCLK_I2S1, "i2s1", "pclk", PCLKCON, 17, 0, 0),
 348        GATE(PCLK_I2C1, "i2c1", "pclk", PCLKCON, 16, 0, 0),
 349        GATE(PCLK_SPI1, "spi1", "pclk", PCLKCON, 14, 0, 0),
 350};
 351
 352struct samsung_clock_alias s3c2450_aliases[] __initdata = {
 353        ALIAS(PCLK_SPI1, "s3c2443-spi.1", "spi"),
 354        ALIAS(PCLK_SPI1, "s3c2443-spi.1", "spi_busclk0"),
 355        ALIAS(MUX_HSSPI1, "s3c2443-spi.1", "spi_busclk2"),
 356        ALIAS(PCLK_I2C1, "s3c2410-i2c.1", "i2c"),
 357};
 358
 359static int s3c2443_restart(struct notifier_block *this,
 360                           unsigned long mode, void *cmd)
 361{
 362        __raw_writel(0x533c2443, reg_base + SWRST);
 363        return NOTIFY_DONE;
 364}
 365
 366static struct notifier_block s3c2443_restart_handler = {
 367        .notifier_call = s3c2443_restart,
 368        .priority = 129,
 369};
 370
 371/*
 372 * fixed rate clocks generated outside the soc
 373 * Only necessary until the devicetree-move is complete
 374 */
 375struct samsung_fixed_rate_clock s3c2443_common_frate_clks[] __initdata = {
 376        FRATE(0, "xti", NULL, CLK_IS_ROOT, 0),
 377        FRATE(0, "ext", NULL, CLK_IS_ROOT, 0),
 378        FRATE(0, "ext_i2s", NULL, CLK_IS_ROOT, 0),
 379        FRATE(0, "ext_uart", NULL, CLK_IS_ROOT, 0),
 380};
 381
 382static void __init s3c2443_common_clk_register_fixed_ext(
 383                struct samsung_clk_provider *ctx, unsigned long xti_f)
 384{
 385        s3c2443_common_frate_clks[0].fixed_rate = xti_f;
 386        samsung_clk_register_fixed_rate(ctx, s3c2443_common_frate_clks,
 387                                ARRAY_SIZE(s3c2443_common_frate_clks));
 388}
 389
 390void __init s3c2443_common_clk_init(struct device_node *np, unsigned long xti_f,
 391                                    int current_soc,
 392                                    void __iomem *base)
 393{
 394        struct samsung_clk_provider *ctx;
 395        int ret;
 396        reg_base = base;
 397
 398        if (np) {
 399                reg_base = of_iomap(np, 0);
 400                if (!reg_base)
 401                        panic("%s: failed to map registers\n", __func__);
 402        }
 403
 404        ctx = samsung_clk_init(np, reg_base, NR_CLKS);
 405        if (!ctx)
 406                panic("%s: unable to allocate context.\n", __func__);
 407
 408        /* Register external clocks only in non-dt cases */
 409        if (!np)
 410                s3c2443_common_clk_register_fixed_ext(ctx, xti_f);
 411
 412        /* Register PLLs. */
 413        if (current_soc == S3C2416 || current_soc == S3C2450)
 414                samsung_clk_register_pll(ctx, s3c2416_pll_clks,
 415                                ARRAY_SIZE(s3c2416_pll_clks), reg_base);
 416        else
 417                samsung_clk_register_pll(ctx, s3c2443_pll_clks,
 418                                ARRAY_SIZE(s3c2443_pll_clks), reg_base);
 419
 420        /* Register common internal clocks. */
 421        samsung_clk_register_mux(ctx, s3c2443_common_muxes,
 422                        ARRAY_SIZE(s3c2443_common_muxes));
 423        samsung_clk_register_div(ctx, s3c2443_common_dividers,
 424                        ARRAY_SIZE(s3c2443_common_dividers));
 425        samsung_clk_register_gate(ctx, s3c2443_common_gates,
 426                ARRAY_SIZE(s3c2443_common_gates));
 427        samsung_clk_register_alias(ctx, s3c2443_common_aliases,
 428                ARRAY_SIZE(s3c2443_common_aliases));
 429
 430        /* Register SoC-specific clocks. */
 431        switch (current_soc) {
 432        case S3C2450:
 433                samsung_clk_register_div(ctx, s3c2450_dividers,
 434                                ARRAY_SIZE(s3c2450_dividers));
 435                samsung_clk_register_mux(ctx, s3c2450_muxes,
 436                                ARRAY_SIZE(s3c2450_muxes));
 437                samsung_clk_register_gate(ctx, s3c2450_gates,
 438                                ARRAY_SIZE(s3c2450_gates));
 439                samsung_clk_register_alias(ctx, s3c2450_aliases,
 440                                ARRAY_SIZE(s3c2450_aliases));
 441                /* fall through, as s3c2450 extends the s3c2416 clocks */
 442        case S3C2416:
 443                samsung_clk_register_div(ctx, s3c2416_dividers,
 444                                ARRAY_SIZE(s3c2416_dividers));
 445                samsung_clk_register_mux(ctx, s3c2416_muxes,
 446                                ARRAY_SIZE(s3c2416_muxes));
 447                samsung_clk_register_gate(ctx, s3c2416_gates,
 448                                ARRAY_SIZE(s3c2416_gates));
 449                samsung_clk_register_alias(ctx, s3c2416_aliases,
 450                                ARRAY_SIZE(s3c2416_aliases));
 451                break;
 452        case S3C2443:
 453                samsung_clk_register_div(ctx, s3c2443_dividers,
 454                                ARRAY_SIZE(s3c2443_dividers));
 455                samsung_clk_register_gate(ctx, s3c2443_gates,
 456                                ARRAY_SIZE(s3c2443_gates));
 457                samsung_clk_register_alias(ctx, s3c2443_aliases,
 458                                ARRAY_SIZE(s3c2443_aliases));
 459                break;
 460        }
 461
 462        s3c2443_clk_sleep_init();
 463
 464        samsung_clk_of_add_provider(np, ctx);
 465
 466        ret = register_restart_handler(&s3c2443_restart_handler);
 467        if (ret)
 468                pr_warn("cannot register restart handler, %d\n", ret);
 469}
 470
 471static void __init s3c2416_clk_init(struct device_node *np)
 472{
 473        s3c2443_common_clk_init(np, 0, S3C2416, 0);
 474}
 475CLK_OF_DECLARE(s3c2416_clk, "samsung,s3c2416-clock", s3c2416_clk_init);
 476
 477static void __init s3c2443_clk_init(struct device_node *np)
 478{
 479        s3c2443_common_clk_init(np, 0, S3C2443, 0);
 480}
 481CLK_OF_DECLARE(s3c2443_clk, "samsung,s3c2443-clock", s3c2443_clk_init);
 482
 483static void __init s3c2450_clk_init(struct device_node *np)
 484{
 485        s3c2443_common_clk_init(np, 0, S3C2450, 0);
 486}
 487CLK_OF_DECLARE(s3c2450_clk, "samsung,s3c2450-clock", s3c2450_clk_init);
 488