1 /* 2 * Copyright (c) 2013 Tomasz Figa <tomasz.figa at gmail.com> 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 all S3C64xx 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 18 #include <dt-bindings/clock/samsung,s3c64xx-clock.h> 19 20 #include "clk.h" 21 #include "clk-pll.h" 22 23 /* S3C64xx clock controller register offsets. */ 24 #define APLL_LOCK 0x000 25 #define MPLL_LOCK 0x004 26 #define EPLL_LOCK 0x008 27 #define APLL_CON 0x00c 28 #define MPLL_CON 0x010 29 #define EPLL_CON0 0x014 30 #define EPLL_CON1 0x018 31 #define CLK_SRC 0x01c 32 #define CLK_DIV0 0x020 33 #define CLK_DIV1 0x024 34 #define CLK_DIV2 0x028 35 #define HCLK_GATE 0x030 36 #define PCLK_GATE 0x034 37 #define SCLK_GATE 0x038 38 #define MEM0_GATE 0x03c 39 #define CLK_SRC2 0x10c 40 #define OTHERS 0x900 41 42 /* Helper macros to define clock arrays. */ 43 #define FIXED_RATE_CLOCKS(name) \ 44 static struct samsung_fixed_rate_clock name[] 45 #define MUX_CLOCKS(name) \ 46 static struct samsung_mux_clock name[] 47 #define DIV_CLOCKS(name) \ 48 static struct samsung_div_clock name[] 49 #define GATE_CLOCKS(name) \ 50 static struct samsung_gate_clock name[] 51 52 /* Helper macros for gate types present on S3C64xx. */ 53 #define GATE_BUS(_id, cname, pname, o, b) \ 54 GATE(_id, cname, pname, o, b, 0, 0) 55 #define GATE_SCLK(_id, cname, pname, o, b) \ 56 GATE(_id, cname, pname, o, b, CLK_SET_RATE_PARENT, 0) 57 #define GATE_ON(_id, cname, pname, o, b) \ 58 GATE(_id, cname, pname, o, b, CLK_IGNORE_UNUSED, 0) 59 60 /* list of PLLs to be registered */ 61 enum s3c64xx_plls { 62 apll, mpll, epll, 63 }; 64 65 static void __iomem *reg_base; 66 static bool is_s3c6400; 67 68 #ifdef CONFIG_PM_SLEEP 69 static struct samsung_clk_reg_dump *s3c64xx_save_common; 70 static struct samsung_clk_reg_dump *s3c64xx_save_soc; 71 72 /* 73 * List of controller registers to be saved and restored during 74 * a suspend/resume cycle. 75 */ 76 static unsigned long s3c64xx_clk_regs[] __initdata = { 77 APLL_LOCK, 78 MPLL_LOCK, 79 EPLL_LOCK, 80 APLL_CON, 81 MPLL_CON, 82 EPLL_CON0, 83 EPLL_CON1, 84 CLK_SRC, 85 CLK_DIV0, 86 CLK_DIV1, 87 CLK_DIV2, 88 HCLK_GATE, 89 PCLK_GATE, 90 SCLK_GATE, 91 }; 92 93 static unsigned long s3c6410_clk_regs[] __initdata = { 94 CLK_SRC2, 95 MEM0_GATE, 96 }; 97 98 static int s3c64xx_clk_suspend(void) 99 { 100 samsung_clk_save(reg_base, s3c64xx_save_common, 101 ARRAY_SIZE(s3c64xx_clk_regs)); 102 103 if (!is_s3c6400) 104 samsung_clk_save(reg_base, s3c64xx_save_soc, 105 ARRAY_SIZE(s3c6410_clk_regs)); 106 107 return 0; 108 } 109 110 static void s3c64xx_clk_resume(void) 111 { 112 samsung_clk_restore(reg_base, s3c64xx_save_common, 113 ARRAY_SIZE(s3c64xx_clk_regs)); 114 115 if (!is_s3c6400) 116 samsung_clk_restore(reg_base, s3c64xx_save_soc, 117 ARRAY_SIZE(s3c6410_clk_regs)); 118 } 119 120 static struct syscore_ops s3c64xx_clk_syscore_ops = { 121 .suspend = s3c64xx_clk_suspend, 122 .resume = s3c64xx_clk_resume, 123 }; 124 125 static void s3c64xx_clk_sleep_init(void) 126 { 127 s3c64xx_save_common = samsung_clk_alloc_reg_dump(s3c64xx_clk_regs, 128 ARRAY_SIZE(s3c64xx_clk_regs)); 129 if (!s3c64xx_save_common) 130 goto err_warn; 131 132 if (!is_s3c6400) { 133 s3c64xx_save_soc = samsung_clk_alloc_reg_dump(s3c6410_clk_regs, 134 ARRAY_SIZE(s3c6410_clk_regs)); 135 if (!s3c64xx_save_soc) 136 goto err_soc; 137 } 138 139 register_syscore_ops(&s3c64xx_clk_syscore_ops); 140 return; 141 142 err_soc: 143 kfree(s3c64xx_save_common); 144 err_warn: 145 pr_warn("%s: failed to allocate sleep save data, no sleep support!\n", 146 __func__); 147 } 148 #else 149 static void s3c64xx_clk_sleep_init(void) {} 150 #endif 151 152 /* List of parent clocks common for all S3C64xx SoCs. */ 153 PNAME(spi_mmc_p) = { "mout_epll", "dout_mpll", "fin_pll", "clk27m" }; 154 PNAME(uart_p) = { "mout_epll", "dout_mpll" }; 155 PNAME(audio0_p) = { "mout_epll", "dout_mpll", "fin_pll", "iiscdclk0", 156 "pcmcdclk0", "none", "none", "none" }; 157 PNAME(audio1_p) = { "mout_epll", "dout_mpll", "fin_pll", "iiscdclk1", 158 "pcmcdclk0", "none", "none", "none" }; 159 PNAME(mfc_p) = { "hclkx2", "mout_epll" }; 160 PNAME(apll_p) = { "fin_pll", "fout_apll" }; 161 PNAME(mpll_p) = { "fin_pll", "fout_mpll" }; 162 PNAME(epll_p) = { "fin_pll", "fout_epll" }; 163 PNAME(hclkx2_p) = { "mout_mpll", "mout_apll" }; 164 165 /* S3C6400-specific parent clocks. */ 166 PNAME(scaler_lcd_p6400) = { "mout_epll", "dout_mpll", "none", "none" }; 167 PNAME(irda_p6400) = { "mout_epll", "dout_mpll", "none", "clk48m" }; 168 PNAME(uhost_p6400) = { "clk48m", "mout_epll", "dout_mpll", "none" }; 169 170 /* S3C6410-specific parent clocks. */ 171 PNAME(clk27_p6410) = { "clk27m", "fin_pll" }; 172 PNAME(scaler_lcd_p6410) = { "mout_epll", "dout_mpll", "fin_pll", "none" }; 173 PNAME(irda_p6410) = { "mout_epll", "dout_mpll", "fin_pll", "clk48m" }; 174 PNAME(uhost_p6410) = { "clk48m", "mout_epll", "dout_mpll", "fin_pll" }; 175 PNAME(audio2_p6410) = { "mout_epll", "dout_mpll", "fin_pll", "iiscdclk2", 176 "pcmcdclk1", "none", "none", "none" }; 177 178 /* Fixed rate clocks generated outside the SoC. */ 179 FIXED_RATE_CLOCKS(s3c64xx_fixed_rate_ext_clks) __initdata = { 180 FRATE(0, "fin_pll", NULL, CLK_IS_ROOT, 0), 181 FRATE(0, "xusbxti", NULL, CLK_IS_ROOT, 0), 182 }; 183 184 /* Fixed rate clocks generated inside the SoC. */ 185 FIXED_RATE_CLOCKS(s3c64xx_fixed_rate_clks) __initdata = { 186 FRATE(CLK27M, "clk27m", NULL, CLK_IS_ROOT, 27000000), 187 FRATE(CLK48M, "clk48m", NULL, CLK_IS_ROOT, 48000000), 188 }; 189 190 /* List of clock muxes present on all S3C64xx SoCs. */ 191 MUX_CLOCKS(s3c64xx_mux_clks) __initdata = { 192 MUX_F(0, "mout_syncmux", hclkx2_p, OTHERS, 6, 1, 0, CLK_MUX_READ_ONLY), 193 MUX(MOUT_APLL, "mout_apll", apll_p, CLK_SRC, 0, 1), 194 MUX(MOUT_MPLL, "mout_mpll", mpll_p, CLK_SRC, 1, 1), 195 MUX(MOUT_EPLL, "mout_epll", epll_p, CLK_SRC, 2, 1), 196 MUX(MOUT_MFC, "mout_mfc", mfc_p, CLK_SRC, 4, 1), 197 MUX(MOUT_AUDIO0, "mout_audio0", audio0_p, CLK_SRC, 7, 3), 198 MUX(MOUT_AUDIO1, "mout_audio1", audio1_p, CLK_SRC, 10, 3), 199 MUX(MOUT_UART, "mout_uart", uart_p, CLK_SRC, 13, 1), 200 MUX(MOUT_SPI0, "mout_spi0", spi_mmc_p, CLK_SRC, 14, 2), 201 MUX(MOUT_SPI1, "mout_spi1", spi_mmc_p, CLK_SRC, 16, 2), 202 MUX(MOUT_MMC0, "mout_mmc0", spi_mmc_p, CLK_SRC, 18, 2), 203 MUX(MOUT_MMC1, "mout_mmc1", spi_mmc_p, CLK_SRC, 20, 2), 204 MUX(MOUT_MMC2, "mout_mmc2", spi_mmc_p, CLK_SRC, 22, 2), 205 }; 206 207 /* List of clock muxes present on S3C6400. */ 208 MUX_CLOCKS(s3c6400_mux_clks) __initdata = { 209 MUX(MOUT_UHOST, "mout_uhost", uhost_p6400, CLK_SRC, 5, 2), 210 MUX(MOUT_IRDA, "mout_irda", irda_p6400, CLK_SRC, 24, 2), 211 MUX(MOUT_LCD, "mout_lcd", scaler_lcd_p6400, CLK_SRC, 26, 2), 212 MUX(MOUT_SCALER, "mout_scaler", scaler_lcd_p6400, CLK_SRC, 28, 2), 213 }; 214 215 /* List of clock muxes present on S3C6410. */ 216 MUX_CLOCKS(s3c6410_mux_clks) __initdata = { 217 MUX(MOUT_UHOST, "mout_uhost", uhost_p6410, CLK_SRC, 5, 2), 218 MUX(MOUT_IRDA, "mout_irda", irda_p6410, CLK_SRC, 24, 2), 219 MUX(MOUT_LCD, "mout_lcd", scaler_lcd_p6410, CLK_SRC, 26, 2), 220 MUX(MOUT_SCALER, "mout_scaler", scaler_lcd_p6410, CLK_SRC, 28, 2), 221 MUX(MOUT_DAC27, "mout_dac27", clk27_p6410, CLK_SRC, 30, 1), 222 MUX(MOUT_TV27, "mout_tv27", clk27_p6410, CLK_SRC, 31, 1), 223 MUX(MOUT_AUDIO2, "mout_audio2", audio2_p6410, CLK_SRC2, 0, 3), 224 }; 225 226 /* List of clock dividers present on all S3C64xx SoCs. */ 227 DIV_CLOCKS(s3c64xx_div_clks) __initdata = { 228 DIV(DOUT_MPLL, "dout_mpll", "mout_mpll", CLK_DIV0, 4, 1), 229 DIV(HCLKX2, "hclkx2", "mout_syncmux", CLK_DIV0, 9, 3), 230 DIV(HCLK, "hclk", "hclkx2", CLK_DIV0, 8, 1), 231 DIV(PCLK, "pclk", "hclkx2", CLK_DIV0, 12, 4), 232 DIV(DOUT_SECUR, "dout_secur", "hclkx2", CLK_DIV0, 18, 2), 233 DIV(DOUT_CAM, "dout_cam", "hclkx2", CLK_DIV0, 20, 4), 234 DIV(DOUT_JPEG, "dout_jpeg", "hclkx2", CLK_DIV0, 24, 4), 235 DIV(DOUT_MFC, "dout_mfc", "mout_mfc", CLK_DIV0, 28, 4), 236 DIV(DOUT_MMC0, "dout_mmc0", "mout_mmc0", CLK_DIV1, 0, 4), 237 DIV(DOUT_MMC1, "dout_mmc1", "mout_mmc1", CLK_DIV1, 4, 4), 238 DIV(DOUT_MMC2, "dout_mmc2", "mout_mmc2", CLK_DIV1, 8, 4), 239 DIV(DOUT_LCD, "dout_lcd", "mout_lcd", CLK_DIV1, 12, 4), 240 DIV(DOUT_SCALER, "dout_scaler", "mout_scaler", CLK_DIV1, 16, 4), 241 DIV(DOUT_UHOST, "dout_uhost", "mout_uhost", CLK_DIV1, 20, 4), 242 DIV(DOUT_SPI0, "dout_spi0", "mout_spi0", CLK_DIV2, 0, 4), 243 DIV(DOUT_SPI1, "dout_spi1", "mout_spi1", CLK_DIV2, 4, 4), 244 DIV(DOUT_AUDIO0, "dout_audio0", "mout_audio0", CLK_DIV2, 8, 4), 245 DIV(DOUT_AUDIO1, "dout_audio1", "mout_audio1", CLK_DIV2, 12, 4), 246 DIV(DOUT_UART, "dout_uart", "mout_uart", CLK_DIV2, 16, 4), 247 DIV(DOUT_IRDA, "dout_irda", "mout_irda", CLK_DIV2, 20, 4), 248 }; 249 250 /* List of clock dividers present on S3C6400. */ 251 DIV_CLOCKS(s3c6400_div_clks) __initdata = { 252 DIV(ARMCLK, "armclk", "mout_apll", CLK_DIV0, 0, 3), 253 }; 254 255 /* List of clock dividers present on S3C6410. */ 256 DIV_CLOCKS(s3c6410_div_clks) __initdata = { 257 DIV(ARMCLK, "armclk", "mout_apll", CLK_DIV0, 0, 4), 258 DIV(DOUT_FIMC, "dout_fimc", "hclk", CLK_DIV1, 24, 4), 259 DIV(DOUT_AUDIO2, "dout_audio2", "mout_audio2", CLK_DIV2, 24, 4), 260 }; 261 262 /* List of clock gates present on all S3C64xx SoCs. */ 263 GATE_CLOCKS(s3c64xx_gate_clks) __initdata = { 264 GATE_BUS(HCLK_UHOST, "hclk_uhost", "hclk", HCLK_GATE, 29), 265 GATE_BUS(HCLK_SECUR, "hclk_secur", "hclk", HCLK_GATE, 28), 266 GATE_BUS(HCLK_SDMA1, "hclk_sdma1", "hclk", HCLK_GATE, 27), 267 GATE_BUS(HCLK_SDMA0, "hclk_sdma0", "hclk", HCLK_GATE, 26), 268 GATE_ON(HCLK_DDR1, "hclk_ddr1", "hclk", HCLK_GATE, 24), 269 GATE_BUS(HCLK_USB, "hclk_usb", "hclk", HCLK_GATE, 20), 270 GATE_BUS(HCLK_HSMMC2, "hclk_hsmmc2", "hclk", HCLK_GATE, 19), 271 GATE_BUS(HCLK_HSMMC1, "hclk_hsmmc1", "hclk", HCLK_GATE, 18), 272 GATE_BUS(HCLK_HSMMC0, "hclk_hsmmc0", "hclk", HCLK_GATE, 17), 273 GATE_BUS(HCLK_MDP, "hclk_mdp", "hclk", HCLK_GATE, 16), 274 GATE_BUS(HCLK_DHOST, "hclk_dhost", "hclk", HCLK_GATE, 15), 275 GATE_BUS(HCLK_IHOST, "hclk_ihost", "hclk", HCLK_GATE, 14), 276 GATE_BUS(HCLK_DMA1, "hclk_dma1", "hclk", HCLK_GATE, 13), 277 GATE_BUS(HCLK_DMA0, "hclk_dma0", "hclk", HCLK_GATE, 12), 278 GATE_BUS(HCLK_JPEG, "hclk_jpeg", "hclk", HCLK_GATE, 11), 279 GATE_BUS(HCLK_CAMIF, "hclk_camif", "hclk", HCLK_GATE, 10), 280 GATE_BUS(HCLK_SCALER, "hclk_scaler", "hclk", HCLK_GATE, 9), 281 GATE_BUS(HCLK_2D, "hclk_2d", "hclk", HCLK_GATE, 8), 282 GATE_BUS(HCLK_TV, "hclk_tv", "hclk", HCLK_GATE, 7), 283 GATE_BUS(HCLK_POST0, "hclk_post0", "hclk", HCLK_GATE, 5), 284 GATE_BUS(HCLK_ROT, "hclk_rot", "hclk", HCLK_GATE, 4), 285 GATE_BUS(HCLK_LCD, "hclk_lcd", "hclk", HCLK_GATE, 3), 286 GATE_BUS(HCLK_TZIC, "hclk_tzic", "hclk", HCLK_GATE, 2), 287 GATE_ON(HCLK_INTC, "hclk_intc", "hclk", HCLK_GATE, 1), 288 GATE_ON(PCLK_SKEY, "pclk_skey", "pclk", PCLK_GATE, 24), 289 GATE_ON(PCLK_CHIPID, "pclk_chipid", "pclk", PCLK_GATE, 23), 290 GATE_BUS(PCLK_SPI1, "pclk_spi1", "pclk", PCLK_GATE, 22), 291 GATE_BUS(PCLK_SPI0, "pclk_spi0", "pclk", PCLK_GATE, 21), 292 GATE_BUS(PCLK_HSIRX, "pclk_hsirx", "pclk", PCLK_GATE, 20), 293 GATE_BUS(PCLK_HSITX, "pclk_hsitx", "pclk", PCLK_GATE, 19), 294 GATE_ON(PCLK_GPIO, "pclk_gpio", "pclk", PCLK_GATE, 18), 295 GATE_BUS(PCLK_IIC0, "pclk_iic0", "pclk", PCLK_GATE, 17), 296 GATE_BUS(PCLK_IIS1, "pclk_iis1", "pclk", PCLK_GATE, 16), 297 GATE_BUS(PCLK_IIS0, "pclk_iis0", "pclk", PCLK_GATE, 15), 298 GATE_BUS(PCLK_AC97, "pclk_ac97", "pclk", PCLK_GATE, 14), 299 GATE_BUS(PCLK_TZPC, "pclk_tzpc", "pclk", PCLK_GATE, 13), 300 GATE_BUS(PCLK_TSADC, "pclk_tsadc", "pclk", PCLK_GATE, 12), 301 GATE_BUS(PCLK_KEYPAD, "pclk_keypad", "pclk", PCLK_GATE, 11), 302 GATE_BUS(PCLK_IRDA, "pclk_irda", "pclk", PCLK_GATE, 10), 303 GATE_BUS(PCLK_PCM1, "pclk_pcm1", "pclk", PCLK_GATE, 9), 304 GATE_BUS(PCLK_PCM0, "pclk_pcm0", "pclk", PCLK_GATE, 8), 305 GATE_BUS(PCLK_PWM, "pclk_pwm", "pclk", PCLK_GATE, 7), 306 GATE_BUS(PCLK_RTC, "pclk_rtc", "pclk", PCLK_GATE, 6), 307 GATE_BUS(PCLK_WDT, "pclk_wdt", "pclk", PCLK_GATE, 5), 308 GATE_BUS(PCLK_UART3, "pclk_uart3", "pclk", PCLK_GATE, 4), 309 GATE_BUS(PCLK_UART2, "pclk_uart2", "pclk", PCLK_GATE, 3), 310 GATE_BUS(PCLK_UART1, "pclk_uart1", "pclk", PCLK_GATE, 2), 311 GATE_BUS(PCLK_UART0, "pclk_uart0", "pclk", PCLK_GATE, 1), 312 GATE_BUS(PCLK_MFC, "pclk_mfc", "pclk", PCLK_GATE, 0), 313 GATE_SCLK(SCLK_UHOST, "sclk_uhost", "dout_uhost", SCLK_GATE, 30), 314 GATE_SCLK(SCLK_MMC2_48, "sclk_mmc2_48", "clk48m", SCLK_GATE, 29), 315 GATE_SCLK(SCLK_MMC1_48, "sclk_mmc1_48", "clk48m", SCLK_GATE, 28), 316 GATE_SCLK(SCLK_MMC0_48, "sclk_mmc0_48", "clk48m", SCLK_GATE, 27), 317 GATE_SCLK(SCLK_MMC2, "sclk_mmc2", "dout_mmc2", SCLK_GATE, 26), 318 GATE_SCLK(SCLK_MMC1, "sclk_mmc1", "dout_mmc1", SCLK_GATE, 25), 319 GATE_SCLK(SCLK_MMC0, "sclk_mmc0", "dout_mmc0", SCLK_GATE, 24), 320 GATE_SCLK(SCLK_SPI1_48, "sclk_spi1_48", "clk48m", SCLK_GATE, 23), 321 GATE_SCLK(SCLK_SPI0_48, "sclk_spi0_48", "clk48m", SCLK_GATE, 22), 322 GATE_SCLK(SCLK_SPI1, "sclk_spi1", "dout_spi1", SCLK_GATE, 21), 323 GATE_SCLK(SCLK_SPI0, "sclk_spi0", "dout_spi0", SCLK_GATE, 20), 324 GATE_SCLK(SCLK_DAC27, "sclk_dac27", "mout_dac27", SCLK_GATE, 19), 325 GATE_SCLK(SCLK_TV27, "sclk_tv27", "mout_tv27", SCLK_GATE, 18), 326 GATE_SCLK(SCLK_SCALER27, "sclk_scaler27", "clk27m", SCLK_GATE, 17), 327 GATE_SCLK(SCLK_SCALER, "sclk_scaler", "dout_scaler", SCLK_GATE, 16), 328 GATE_SCLK(SCLK_LCD27, "sclk_lcd27", "clk27m", SCLK_GATE, 15), 329 GATE_SCLK(SCLK_LCD, "sclk_lcd", "dout_lcd", SCLK_GATE, 14), 330 GATE_SCLK(SCLK_POST0_27, "sclk_post0_27", "clk27m", SCLK_GATE, 12), 331 GATE_SCLK(SCLK_POST0, "sclk_post0", "dout_lcd", SCLK_GATE, 10), 332 GATE_SCLK(SCLK_AUDIO1, "sclk_audio1", "dout_audio1", SCLK_GATE, 9), 333 GATE_SCLK(SCLK_AUDIO0, "sclk_audio0", "dout_audio0", SCLK_GATE, 8), 334 GATE_SCLK(SCLK_SECUR, "sclk_secur", "dout_secur", SCLK_GATE, 7), 335 GATE_SCLK(SCLK_IRDA, "sclk_irda", "dout_irda", SCLK_GATE, 6), 336 GATE_SCLK(SCLK_UART, "sclk_uart", "dout_uart", SCLK_GATE, 5), 337 GATE_SCLK(SCLK_MFC, "sclk_mfc", "dout_mfc", SCLK_GATE, 3), 338 GATE_SCLK(SCLK_CAM, "sclk_cam", "dout_cam", SCLK_GATE, 2), 339 GATE_SCLK(SCLK_JPEG, "sclk_jpeg", "dout_jpeg", SCLK_GATE, 1), 340 }; 341 342 /* List of clock gates present on S3C6400. */ 343 GATE_CLOCKS(s3c6400_gate_clks) __initdata = { 344 GATE_ON(HCLK_DDR0, "hclk_ddr0", "hclk", HCLK_GATE, 23), 345 GATE_SCLK(SCLK_ONENAND, "sclk_onenand", "parent", SCLK_GATE, 4), 346 }; 347 348 /* List of clock gates present on S3C6410. */ 349 GATE_CLOCKS(s3c6410_gate_clks) __initdata = { 350 GATE_BUS(HCLK_3DSE, "hclk_3dse", "hclk", HCLK_GATE, 31), 351 GATE_ON(HCLK_IROM, "hclk_irom", "hclk", HCLK_GATE, 25), 352 GATE_ON(HCLK_MEM1, "hclk_mem1", "hclk", HCLK_GATE, 22), 353 GATE_ON(HCLK_MEM0, "hclk_mem0", "hclk", HCLK_GATE, 21), 354 GATE_BUS(HCLK_MFC, "hclk_mfc", "hclk", HCLK_GATE, 0), 355 GATE_BUS(PCLK_IIC1, "pclk_iic1", "pclk", PCLK_GATE, 27), 356 GATE_BUS(PCLK_IIS2, "pclk_iis2", "pclk", PCLK_GATE, 26), 357 GATE_SCLK(SCLK_FIMC, "sclk_fimc", "dout_fimc", SCLK_GATE, 13), 358 GATE_SCLK(SCLK_AUDIO2, "sclk_audio2", "dout_audio2", SCLK_GATE, 11), 359 GATE_BUS(MEM0_CFCON, "mem0_cfcon", "hclk_mem0", MEM0_GATE, 5), 360 GATE_BUS(MEM0_ONENAND1, "mem0_onenand1", "hclk_mem0", MEM0_GATE, 4), 361 GATE_BUS(MEM0_ONENAND0, "mem0_onenand0", "hclk_mem0", MEM0_GATE, 3), 362 GATE_BUS(MEM0_NFCON, "mem0_nfcon", "hclk_mem0", MEM0_GATE, 2), 363 GATE_ON(MEM0_SROM, "mem0_srom", "hclk_mem0", MEM0_GATE, 1), 364 }; 365 366 /* List of PLL clocks. */ 367 static struct samsung_pll_clock s3c64xx_pll_clks[] __initdata = { 368 [apll] = PLL(pll_6552, FOUT_APLL, "fout_apll", "fin_pll", 369 APLL_LOCK, APLL_CON, NULL), 370 [mpll] = PLL(pll_6552, FOUT_MPLL, "fout_mpll", "fin_pll", 371 MPLL_LOCK, MPLL_CON, NULL), 372 [epll] = PLL(pll_6553, FOUT_EPLL, "fout_epll", "fin_pll", 373 EPLL_LOCK, EPLL_CON0, NULL), 374 }; 375 376 /* Aliases for common s3c64xx clocks. */ 377 static struct samsung_clock_alias s3c64xx_clock_aliases[] = { 378 ALIAS(FOUT_APLL, NULL, "fout_apll"), 379 ALIAS(FOUT_MPLL, NULL, "fout_mpll"), 380 ALIAS(FOUT_EPLL, NULL, "fout_epll"), 381 ALIAS(MOUT_EPLL, NULL, "mout_epll"), 382 ALIAS(DOUT_MPLL, NULL, "dout_mpll"), 383 ALIAS(HCLKX2, NULL, "hclk2"), 384 ALIAS(HCLK, NULL, "hclk"), 385 ALIAS(PCLK, NULL, "pclk"), 386 ALIAS(PCLK, NULL, "clk_uart_baud2"), 387 ALIAS(ARMCLK, NULL, "armclk"), 388 ALIAS(HCLK_UHOST, "s3c2410-ohci", "usb-host"), 389 ALIAS(HCLK_USB, "s3c-hsotg", "otg"), 390 ALIAS(HCLK_HSMMC2, "s3c-sdhci.2", "hsmmc"), 391 ALIAS(HCLK_HSMMC2, "s3c-sdhci.2", "mmc_busclk.0"), 392 ALIAS(HCLK_HSMMC1, "s3c-sdhci.1", "hsmmc"), 393 ALIAS(HCLK_HSMMC1, "s3c-sdhci.1", "mmc_busclk.0"), 394 ALIAS(HCLK_HSMMC0, "s3c-sdhci.0", "hsmmc"), 395 ALIAS(HCLK_HSMMC0, "s3c-sdhci.0", "mmc_busclk.0"), 396 ALIAS(HCLK_DMA1, "dma-pl080s.1", "apb_pclk"), 397 ALIAS(HCLK_DMA0, "dma-pl080s.0", "apb_pclk"), 398 ALIAS(HCLK_CAMIF, "s3c-camif", "camif"), 399 ALIAS(HCLK_LCD, "s3c-fb", "lcd"), 400 ALIAS(PCLK_SPI1, "s3c6410-spi.1", "spi"), 401 ALIAS(PCLK_SPI0, "s3c6410-spi.0", "spi"), 402 ALIAS(PCLK_IIC0, "s3c2440-i2c.0", "i2c"), 403 ALIAS(PCLK_IIS1, "samsung-i2s.1", "iis"), 404 ALIAS(PCLK_IIS0, "samsung-i2s.0", "iis"), 405 ALIAS(PCLK_AC97, "samsung-ac97", "ac97"), 406 ALIAS(PCLK_TSADC, "s3c64xx-adc", "adc"), 407 ALIAS(PCLK_KEYPAD, "samsung-keypad", "keypad"), 408 ALIAS(PCLK_PCM1, "samsung-pcm.1", "pcm"), 409 ALIAS(PCLK_PCM0, "samsung-pcm.0", "pcm"), 410 ALIAS(PCLK_PWM, NULL, "timers"), 411 ALIAS(PCLK_RTC, "s3c64xx-rtc", "rtc"), 412 ALIAS(PCLK_WDT, NULL, "watchdog"), 413 ALIAS(PCLK_UART3, "s3c6400-uart.3", "uart"), 414 ALIAS(PCLK_UART2, "s3c6400-uart.2", "uart"), 415 ALIAS(PCLK_UART1, "s3c6400-uart.1", "uart"), 416 ALIAS(PCLK_UART0, "s3c6400-uart.0", "uart"), 417 ALIAS(SCLK_UHOST, "s3c2410-ohci", "usb-bus-host"), 418 ALIAS(SCLK_MMC2, "s3c-sdhci.2", "mmc_busclk.2"), 419 ALIAS(SCLK_MMC1, "s3c-sdhci.1", "mmc_busclk.2"), 420 ALIAS(SCLK_MMC0, "s3c-sdhci.0", "mmc_busclk.2"), 421 ALIAS(PCLK_SPI1, "s3c6410-spi.1", "spi_busclk0"), 422 ALIAS(SCLK_SPI1, "s3c6410-spi.1", "spi_busclk2"), 423 ALIAS(PCLK_SPI0, "s3c6410-spi.0", "spi_busclk0"), 424 ALIAS(SCLK_SPI0, "s3c6410-spi.0", "spi_busclk2"), 425 ALIAS(SCLK_AUDIO1, "samsung-pcm.1", "audio-bus"), 426 ALIAS(SCLK_AUDIO1, "samsung-i2s.1", "audio-bus"), 427 ALIAS(SCLK_AUDIO0, "samsung-pcm.0", "audio-bus"), 428 ALIAS(SCLK_AUDIO0, "samsung-i2s.0", "audio-bus"), 429 ALIAS(SCLK_UART, NULL, "clk_uart_baud3"), 430 ALIAS(SCLK_CAM, "s3c-camif", "camera"), 431 }; 432 433 /* Aliases for s3c6400-specific clocks. */ 434 static struct samsung_clock_alias s3c6400_clock_aliases[] = { 435 /* Nothing to place here yet. */ 436 }; 437 438 /* Aliases for s3c6410-specific clocks. */ 439 static struct samsung_clock_alias s3c6410_clock_aliases[] = { 440 ALIAS(PCLK_IIC1, "s3c2440-i2c.1", "i2c"), 441 ALIAS(PCLK_IIS2, "samsung-i2s.2", "iis"), 442 ALIAS(SCLK_FIMC, "s3c-camif", "fimc"), 443 ALIAS(SCLK_AUDIO2, "samsung-i2s.2", "audio-bus"), 444 ALIAS(MEM0_SROM, NULL, "srom"), 445 }; 446 447 static void __init s3c64xx_clk_register_fixed_ext( 448 struct samsung_clk_provider *ctx, 449 unsigned long fin_pll_f, 450 unsigned long xusbxti_f) 451 { 452 s3c64xx_fixed_rate_ext_clks[0].fixed_rate = fin_pll_f; 453 s3c64xx_fixed_rate_ext_clks[1].fixed_rate = xusbxti_f; 454 samsung_clk_register_fixed_rate(ctx, s3c64xx_fixed_rate_ext_clks, 455 ARRAY_SIZE(s3c64xx_fixed_rate_ext_clks)); 456 } 457 458 /* Register s3c64xx clocks. */ 459 void __init s3c64xx_clk_init(struct device_node *np, unsigned long xtal_f, 460 unsigned long xusbxti_f, bool s3c6400, 461 void __iomem *base) 462 { 463 struct samsung_clk_provider *ctx; 464 465 reg_base = base; 466 is_s3c6400 = s3c6400; 467 468 if (np) { 469 reg_base = of_iomap(np, 0); 470 if (!reg_base) 471 panic("%s: failed to map registers\n", __func__); 472 } 473 474 ctx = samsung_clk_init(np, reg_base, NR_CLKS); 475 if (!ctx) 476 panic("%s: unable to allocate context.\n", __func__); 477 478 /* Register external clocks. */ 479 if (!np) 480 s3c64xx_clk_register_fixed_ext(ctx, xtal_f, xusbxti_f); 481 482 /* Register PLLs. */ 483 samsung_clk_register_pll(ctx, s3c64xx_pll_clks, 484 ARRAY_SIZE(s3c64xx_pll_clks), reg_base); 485 486 /* Register common internal clocks. */ 487 samsung_clk_register_fixed_rate(ctx, s3c64xx_fixed_rate_clks, 488 ARRAY_SIZE(s3c64xx_fixed_rate_clks)); 489 samsung_clk_register_mux(ctx, s3c64xx_mux_clks, 490 ARRAY_SIZE(s3c64xx_mux_clks)); 491 samsung_clk_register_div(ctx, s3c64xx_div_clks, 492 ARRAY_SIZE(s3c64xx_div_clks)); 493 samsung_clk_register_gate(ctx, s3c64xx_gate_clks, 494 ARRAY_SIZE(s3c64xx_gate_clks)); 495 496 /* Register SoC-specific clocks. */ 497 if (is_s3c6400) { 498 samsung_clk_register_mux(ctx, s3c6400_mux_clks, 499 ARRAY_SIZE(s3c6400_mux_clks)); 500 samsung_clk_register_div(ctx, s3c6400_div_clks, 501 ARRAY_SIZE(s3c6400_div_clks)); 502 samsung_clk_register_gate(ctx, s3c6400_gate_clks, 503 ARRAY_SIZE(s3c6400_gate_clks)); 504 samsung_clk_register_alias(ctx, s3c6400_clock_aliases, 505 ARRAY_SIZE(s3c6400_clock_aliases)); 506 } else { 507 samsung_clk_register_mux(ctx, s3c6410_mux_clks, 508 ARRAY_SIZE(s3c6410_mux_clks)); 509 samsung_clk_register_div(ctx, s3c6410_div_clks, 510 ARRAY_SIZE(s3c6410_div_clks)); 511 samsung_clk_register_gate(ctx, s3c6410_gate_clks, 512 ARRAY_SIZE(s3c6410_gate_clks)); 513 samsung_clk_register_alias(ctx, s3c6410_clock_aliases, 514 ARRAY_SIZE(s3c6410_clock_aliases)); 515 } 516 517 samsung_clk_register_alias(ctx, s3c64xx_clock_aliases, 518 ARRAY_SIZE(s3c64xx_clock_aliases)); 519 s3c64xx_clk_sleep_init(); 520 521 samsung_clk_of_add_provider(np, ctx); 522 523 pr_info("%s clocks: apll = %lu, mpll = %lu\n" 524 "\tepll = %lu, arm_clk = %lu\n", 525 is_s3c6400 ? "S3C6400" : "S3C6410", 526 _get_rate("fout_apll"), _get_rate("fout_mpll"), 527 _get_rate("fout_epll"), _get_rate("armclk")); 528 } 529 530 static void __init s3c6400_clk_init(struct device_node *np) 531 { 532 s3c64xx_clk_init(np, 0, 0, true, NULL); 533 } 534 CLK_OF_DECLARE(s3c6400_clk, "samsung,s3c6400-clock", s3c6400_clk_init); 535 536 static void __init s3c6410_clk_init(struct device_node *np) 537 { 538 s3c64xx_clk_init(np, 0, 0, false, NULL); 539 } 540 CLK_OF_DECLARE(s3c6410_clk, "samsung,s3c6410-clock", s3c6410_clk_init); 541