drivers/clk/samsung/clk-s3c64xx.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Copyright (c) 2013 Tomasz Figa <tomasz.figa at gmail.com>
   4  *
   5  * Common Clock Framework support for all S3C64xx SoCs.
   6 */
   7
   8 #include <linux/slab.h>
   9 #include <linux/clk-provider.h>
  10 #include <linux/of.h>
  11 #include <linux/of_address.h>
  12
  13 #include <dt-bindings/clock/samsung,s3c64xx-clock.h>
  14
  15 #include "clk.h"
  16 #include "clk-pll.h"
  17
  18 /* S3C64xx clock controller register offsets. */
  19 #define APLL_LOCK               0x000
  20 #define MPLL_LOCK               0x004
  21 #define EPLL_LOCK               0x008
  22 #define APLL_CON                0x00c
  23 #define MPLL_CON                0x010
  24 #define EPLL_CON0               0x014
  25 #define EPLL_CON1               0x018
  26 #define CLK_SRC                 0x01c
  27 #define CLK_DIV0                0x020
  28 #define CLK_DIV1                0x024
  29 #define CLK_DIV2                0x028
  30 #define HCLK_GATE               0x030
  31 #define PCLK_GATE               0x034
  32 #define SCLK_GATE               0x038
  33 #define MEM0_GATE               0x03c
  34 #define CLK_SRC2                0x10c
  35 #define OTHERS                  0x900
  36
  37 /* Helper macros to define clock arrays. */
  38 #define FIXED_RATE_CLOCKS(name) \
  39                 static struct samsung_fixed_rate_clock name[]
  40 #define MUX_CLOCKS(name)        \
  41                 static struct samsung_mux_clock name[]
  42 #define DIV_CLOCKS(name)        \
  43                 static struct samsung_div_clock name[]
  44 #define GATE_CLOCKS(name)       \
  45                 static struct samsung_gate_clock name[]
  46
  47 /* Helper macros for gate types present on S3C64xx. */
  48 #define GATE_BUS(_id, cname, pname, o, b) \
  49                 GATE(_id, cname, pname, o, b, 0, 0)
  50 #define GATE_SCLK(_id, cname, pname, o, b) \
  51                 GATE(_id, cname, pname, o, b, CLK_SET_RATE_PARENT, 0)
  52 #define GATE_ON(_id, cname, pname, o, b) \
  53                 GATE(_id, cname, pname, o, b, CLK_IGNORE_UNUSED, 0)
  54
  55 static void __iomem *reg_base;
  56 static bool is_s3c6400;
  57
  58 /*
  59  * List of controller registers to be saved and restored during
  60  * a suspend/resume cycle.
  61  */
  62 static unsigned long s3c64xx_clk_regs[] __initdata = {
  63         APLL_LOCK,
  64         MPLL_LOCK,
  65         EPLL_LOCK,
  66         APLL_CON,
  67         MPLL_CON,
  68         EPLL_CON0,
  69         EPLL_CON1,
  70         CLK_SRC,
  71         CLK_DIV0,
  72         CLK_DIV1,
  73         CLK_DIV2,
  74         HCLK_GATE,
  75         PCLK_GATE,
  76         SCLK_GATE,
  77 };
  78
  79 static unsigned long s3c6410_clk_regs[] __initdata = {
  80         CLK_SRC2,
  81         MEM0_GATE,
  82 };
  83
  84 /* List of parent clocks common for all S3C64xx SoCs. */
  85 PNAME(spi_mmc_p)        = { "mout_epll", "dout_mpll", "fin_pll", "clk27m" };
  86 PNAME(uart_p)           = { "mout_epll", "dout_mpll" };
  87 PNAME(audio0_p)         = { "mout_epll", "dout_mpll", "fin_pll", "iiscdclk0",
  88                                 "pcmcdclk0", "none", "none", "none" };
  89 PNAME(audio1_p)         = { "mout_epll", "dout_mpll", "fin_pll", "iiscdclk1",
  90                                 "pcmcdclk0", "none", "none", "none" };
  91 PNAME(mfc_p)            = { "hclkx2", "mout_epll" };
  92 PNAME(apll_p)           = { "fin_pll", "fout_apll" };
  93 PNAME(mpll_p)           = { "fin_pll", "fout_mpll" };
  94 PNAME(epll_p)           = { "fin_pll", "fout_epll" };
  95 PNAME(hclkx2_p)         = { "mout_mpll", "mout_apll" };
  96
  97 /* S3C6400-specific parent clocks. */
  98 PNAME(scaler_lcd_p6400) = { "mout_epll", "dout_mpll", "none", "none" };
  99 PNAME(irda_p6400)       = { "mout_epll", "dout_mpll", "none", "clk48m" };
 100 PNAME(uhost_p6400)      = { "clk48m", "mout_epll", "dout_mpll", "none" };
 101
 102 /* S3C6410-specific parent clocks. */
 103 PNAME(clk27_p6410)      = { "clk27m", "fin_pll" };
 104 PNAME(scaler_lcd_p6410) = { "mout_epll", "dout_mpll", "fin_pll", "none" };
 105 PNAME(irda_p6410)       = { "mout_epll", "dout_mpll", "fin_pll", "clk48m" };
 106 PNAME(uhost_p6410)      = { "clk48m", "mout_epll", "dout_mpll", "fin_pll" };
 107 PNAME(audio2_p6410)     = { "mout_epll", "dout_mpll", "fin_pll", "iiscdclk2",
 108                                 "pcmcdclk1", "none", "none", "none" };
 109
 110 /* Fixed rate clocks generated outside the SoC. */
 111 FIXED_RATE_CLOCKS(s3c64xx_fixed_rate_ext_clks) __initdata = {
 112         FRATE(0, "fin_pll", NULL, 0, 0),
 113         FRATE(0, "xusbxti", NULL, 0, 0),
 114 };
 115
 116 /* Fixed rate clocks generated inside the SoC. */
 117 FIXED_RATE_CLOCKS(s3c64xx_fixed_rate_clks) __initdata = {
 118         FRATE(CLK27M, "clk27m", NULL, 0, 27000000),
 119         FRATE(CLK48M, "clk48m", NULL, 0, 48000000),
 120 };
 121
 122 /* List of clock muxes present on all S3C64xx SoCs. */
 123 MUX_CLOCKS(s3c64xx_mux_clks) __initdata = {
 124         MUX_F(0, "mout_syncmux", hclkx2_p, OTHERS, 6, 1, 0, CLK_MUX_READ_ONLY),
 125         MUX(MOUT_APLL, "mout_apll", apll_p, CLK_SRC, 0, 1),
 126         MUX(MOUT_MPLL, "mout_mpll", mpll_p, CLK_SRC, 1, 1),
 127         MUX(MOUT_EPLL, "mout_epll", epll_p, CLK_SRC, 2, 1),
 128         MUX(MOUT_MFC, "mout_mfc", mfc_p, CLK_SRC, 4, 1),
 129         MUX(MOUT_AUDIO0, "mout_audio0", audio0_p, CLK_SRC, 7, 3),
 130         MUX(MOUT_AUDIO1, "mout_audio1", audio1_p, CLK_SRC, 10, 3),
 131         MUX(MOUT_UART, "mout_uart", uart_p, CLK_SRC, 13, 1),
 132         MUX(MOUT_SPI0, "mout_spi0", spi_mmc_p, CLK_SRC, 14, 2),
 133         MUX(MOUT_SPI1, "mout_spi1", spi_mmc_p, CLK_SRC, 16, 2),
 134         MUX(MOUT_MMC0, "mout_mmc0", spi_mmc_p, CLK_SRC, 18, 2),
 135         MUX(MOUT_MMC1, "mout_mmc1", spi_mmc_p, CLK_SRC, 20, 2),
 136         MUX(MOUT_MMC2, "mout_mmc2", spi_mmc_p, CLK_SRC, 22, 2),
 137 };
 138
 139 /* List of clock muxes present on S3C6400. */
 140 MUX_CLOCKS(s3c6400_mux_clks) __initdata = {
 141         MUX(MOUT_UHOST, "mout_uhost", uhost_p6400, CLK_SRC, 5, 2),
 142         MUX(MOUT_IRDA, "mout_irda", irda_p6400, CLK_SRC, 24, 2),
 143         MUX(MOUT_LCD, "mout_lcd", scaler_lcd_p6400, CLK_SRC, 26, 2),
 144         MUX(MOUT_SCALER, "mout_scaler", scaler_lcd_p6400, CLK_SRC, 28, 2),
 145 };
 146
 147 /* List of clock muxes present on S3C6410. */
 148 MUX_CLOCKS(s3c6410_mux_clks) __initdata = {
 149         MUX(MOUT_UHOST, "mout_uhost", uhost_p6410, CLK_SRC, 5, 2),
 150         MUX(MOUT_IRDA, "mout_irda", irda_p6410, CLK_SRC, 24, 2),
 151         MUX(MOUT_LCD, "mout_lcd", scaler_lcd_p6410, CLK_SRC, 26, 2),
 152         MUX(MOUT_SCALER, "mout_scaler", scaler_lcd_p6410, CLK_SRC, 28, 2),
 153         MUX(MOUT_DAC27, "mout_dac27", clk27_p6410, CLK_SRC, 30, 1),
 154         MUX(MOUT_TV27, "mout_tv27", clk27_p6410, CLK_SRC, 31, 1),
 155         MUX(MOUT_AUDIO2, "mout_audio2", audio2_p6410, CLK_SRC2, 0, 3),
 156 };
 157
 158 /* List of clock dividers present on all S3C64xx SoCs. */
 159 DIV_CLOCKS(s3c64xx_div_clks) __initdata = {
 160         DIV(DOUT_MPLL, "dout_mpll", "mout_mpll", CLK_DIV0, 4, 1),
 161         DIV(HCLKX2, "hclkx2", "mout_syncmux", CLK_DIV0, 9, 3),
 162         DIV(HCLK, "hclk", "hclkx2", CLK_DIV0, 8, 1),
 163         DIV(PCLK, "pclk", "hclkx2", CLK_DIV0, 12, 4),
 164         DIV(DOUT_SECUR, "dout_secur", "hclkx2", CLK_DIV0, 18, 2),
 165         DIV(DOUT_CAM, "dout_cam", "hclkx2", CLK_DIV0, 20, 4),
 166         DIV(DOUT_JPEG, "dout_jpeg", "hclkx2", CLK_DIV0, 24, 4),
 167         DIV(DOUT_MFC, "dout_mfc", "mout_mfc", CLK_DIV0, 28, 4),
 168         DIV(DOUT_MMC0, "dout_mmc0", "mout_mmc0", CLK_DIV1, 0, 4),
 169         DIV(DOUT_MMC1, "dout_mmc1", "mout_mmc1", CLK_DIV1, 4, 4),
 170         DIV(DOUT_MMC2, "dout_mmc2", "mout_mmc2", CLK_DIV1, 8, 4),
 171         DIV(DOUT_LCD, "dout_lcd", "mout_lcd", CLK_DIV1, 12, 4),
 172         DIV(DOUT_SCALER, "dout_scaler", "mout_scaler", CLK_DIV1, 16, 4),
 173         DIV(DOUT_UHOST, "dout_uhost", "mout_uhost", CLK_DIV1, 20, 4),
 174         DIV(DOUT_SPI0, "dout_spi0", "mout_spi0", CLK_DIV2, 0, 4),
 175         DIV(DOUT_SPI1, "dout_spi1", "mout_spi1", CLK_DIV2, 4, 4),
 176         DIV(DOUT_AUDIO0, "dout_audio0", "mout_audio0", CLK_DIV2, 8, 4),
 177         DIV(DOUT_AUDIO1, "dout_audio1", "mout_audio1", CLK_DIV2, 12, 4),
 178         DIV(DOUT_UART, "dout_uart", "mout_uart", CLK_DIV2, 16, 4),
 179         DIV(DOUT_IRDA, "dout_irda", "mout_irda", CLK_DIV2, 20, 4),
 180 };
 181
 182 /* List of clock dividers present on S3C6400. */
 183 DIV_CLOCKS(s3c6400_div_clks) __initdata = {
 184         DIV(ARMCLK, "armclk", "mout_apll", CLK_DIV0, 0, 3),
 185 };
 186
 187 /* List of clock dividers present on S3C6410. */
 188 DIV_CLOCKS(s3c6410_div_clks) __initdata = {
 189         DIV(ARMCLK, "armclk", "mout_apll", CLK_DIV0, 0, 4),
 190         DIV(DOUT_FIMC, "dout_fimc", "hclk", CLK_DIV1, 24, 4),
 191         DIV(DOUT_AUDIO2, "dout_audio2", "mout_audio2", CLK_DIV2, 24, 4),
 192 };
 193
 194 /* List of clock gates present on all S3C64xx SoCs. */
 195 GATE_CLOCKS(s3c64xx_gate_clks) __initdata = {
 196         GATE_BUS(HCLK_UHOST, "hclk_uhost", "hclk", HCLK_GATE, 29),
 197         GATE_BUS(HCLK_SECUR, "hclk_secur", "hclk", HCLK_GATE, 28),
 198         GATE_BUS(HCLK_SDMA1, "hclk_sdma1", "hclk", HCLK_GATE, 27),
 199         GATE_BUS(HCLK_SDMA0, "hclk_sdma0", "hclk", HCLK_GATE, 26),
 200         GATE_ON(HCLK_DDR1, "hclk_ddr1", "hclk", HCLK_GATE, 24),
 201         GATE_BUS(HCLK_USB, "hclk_usb", "hclk", HCLK_GATE, 20),
 202         GATE_BUS(HCLK_HSMMC2, "hclk_hsmmc2", "hclk", HCLK_GATE, 19),
 203         GATE_BUS(HCLK_HSMMC1, "hclk_hsmmc1", "hclk", HCLK_GATE, 18),
 204         GATE_BUS(HCLK_HSMMC0, "hclk_hsmmc0", "hclk", HCLK_GATE, 17),
 205         GATE_BUS(HCLK_MDP, "hclk_mdp", "hclk", HCLK_GATE, 16),
 206         GATE_BUS(HCLK_DHOST, "hclk_dhost", "hclk", HCLK_GATE, 15),
 207         GATE_BUS(HCLK_IHOST, "hclk_ihost", "hclk", HCLK_GATE, 14),
 208         GATE_BUS(HCLK_DMA1, "hclk_dma1", "hclk", HCLK_GATE, 13),
 209         GATE_BUS(HCLK_DMA0, "hclk_dma0", "hclk", HCLK_GATE, 12),
 210         GATE_BUS(HCLK_JPEG, "hclk_jpeg", "hclk", HCLK_GATE, 11),
 211         GATE_BUS(HCLK_CAMIF, "hclk_camif", "hclk", HCLK_GATE, 10),
 212         GATE_BUS(HCLK_SCALER, "hclk_scaler", "hclk", HCLK_GATE, 9),
 213         GATE_BUS(HCLK_2D, "hclk_2d", "hclk", HCLK_GATE, 8),
 214         GATE_BUS(HCLK_TV, "hclk_tv", "hclk", HCLK_GATE, 7),
 215         GATE_BUS(HCLK_POST0, "hclk_post0", "hclk", HCLK_GATE, 5),
 216         GATE_BUS(HCLK_ROT, "hclk_rot", "hclk", HCLK_GATE, 4),
 217         GATE_BUS(HCLK_LCD, "hclk_lcd", "hclk", HCLK_GATE, 3),
 218         GATE_BUS(HCLK_TZIC, "hclk_tzic", "hclk", HCLK_GATE, 2),
 219         GATE_ON(HCLK_INTC, "hclk_intc", "hclk", HCLK_GATE, 1),
 220         GATE_ON(PCLK_SKEY, "pclk_skey", "pclk", PCLK_GATE, 24),
 221         GATE_ON(PCLK_CHIPID, "pclk_chipid", "pclk", PCLK_GATE, 23),
 222         GATE_BUS(PCLK_SPI1, "pclk_spi1", "pclk", PCLK_GATE, 22),
 223         GATE_BUS(PCLK_SPI0, "pclk_spi0", "pclk", PCLK_GATE, 21),
 224         GATE_BUS(PCLK_HSIRX, "pclk_hsirx", "pclk", PCLK_GATE, 20),
 225         GATE_BUS(PCLK_HSITX, "pclk_hsitx", "pclk", PCLK_GATE, 19),
 226         GATE_ON(PCLK_GPIO, "pclk_gpio", "pclk", PCLK_GATE, 18),
 227         GATE_BUS(PCLK_IIC0, "pclk_iic0", "pclk", PCLK_GATE, 17),
 228         GATE_BUS(PCLK_IIS1, "pclk_iis1", "pclk", PCLK_GATE, 16),
 229         GATE_BUS(PCLK_IIS0, "pclk_iis0", "pclk", PCLK_GATE, 15),
 230         GATE_BUS(PCLK_AC97, "pclk_ac97", "pclk", PCLK_GATE, 14),
 231         GATE_BUS(PCLK_TZPC, "pclk_tzpc", "pclk", PCLK_GATE, 13),
 232         GATE_BUS(PCLK_TSADC, "pclk_tsadc", "pclk", PCLK_GATE, 12),
 233         GATE_BUS(PCLK_KEYPAD, "pclk_keypad", "pclk", PCLK_GATE, 11),
 234         GATE_BUS(PCLK_IRDA, "pclk_irda", "pclk", PCLK_GATE, 10),
 235         GATE_BUS(PCLK_PCM1, "pclk_pcm1", "pclk", PCLK_GATE, 9),
 236         GATE_BUS(PCLK_PCM0, "pclk_pcm0", "pclk", PCLK_GATE, 8),
 237         GATE_BUS(PCLK_PWM, "pclk_pwm", "pclk", PCLK_GATE, 7),
 238         GATE_BUS(PCLK_RTC, "pclk_rtc", "pclk", PCLK_GATE, 6),
 239         GATE_BUS(PCLK_WDT, "pclk_wdt", "pclk", PCLK_GATE, 5),
 240         GATE_BUS(PCLK_UART3, "pclk_uart3", "pclk", PCLK_GATE, 4),
 241         GATE_BUS(PCLK_UART2, "pclk_uart2", "pclk", PCLK_GATE, 3),
 242         GATE_BUS(PCLK_UART1, "pclk_uart1", "pclk", PCLK_GATE, 2),
 243         GATE_BUS(PCLK_UART0, "pclk_uart0", "pclk", PCLK_GATE, 1),
 244         GATE_BUS(PCLK_MFC, "pclk_mfc", "pclk", PCLK_GATE, 0),
 245         GATE_SCLK(SCLK_UHOST, "sclk_uhost", "dout_uhost", SCLK_GATE, 30),
 246         GATE_SCLK(SCLK_MMC2_48, "sclk_mmc2_48", "clk48m", SCLK_GATE, 29),
 247         GATE_SCLK(SCLK_MMC1_48, "sclk_mmc1_48", "clk48m", SCLK_GATE, 28),
 248         GATE_SCLK(SCLK_MMC0_48, "sclk_mmc0_48", "clk48m", SCLK_GATE, 27),
 249         GATE_SCLK(SCLK_MMC2, "sclk_mmc2", "dout_mmc2", SCLK_GATE, 26),
 250         GATE_SCLK(SCLK_MMC1, "sclk_mmc1", "dout_mmc1", SCLK_GATE, 25),
 251         GATE_SCLK(SCLK_MMC0, "sclk_mmc0", "dout_mmc0", SCLK_GATE, 24),
 252         GATE_SCLK(SCLK_SPI1_48, "sclk_spi1_48", "clk48m", SCLK_GATE, 23),
 253         GATE_SCLK(SCLK_SPI0_48, "sclk_spi0_48", "clk48m", SCLK_GATE, 22),
 254         GATE_SCLK(SCLK_SPI1, "sclk_spi1", "dout_spi1", SCLK_GATE, 21),
 255         GATE_SCLK(SCLK_SPI0, "sclk_spi0", "dout_spi0", SCLK_GATE, 20),
 256         GATE_SCLK(SCLK_DAC27, "sclk_dac27", "mout_dac27", SCLK_GATE, 19),
 257         GATE_SCLK(SCLK_TV27, "sclk_tv27", "mout_tv27", SCLK_GATE, 18),
 258         GATE_SCLK(SCLK_SCALER27, "sclk_scaler27", "clk27m", SCLK_GATE, 17),
 259         GATE_SCLK(SCLK_SCALER, "sclk_scaler", "dout_scaler", SCLK_GATE, 16),
 260         GATE_SCLK(SCLK_LCD27, "sclk_lcd27", "clk27m", SCLK_GATE, 15),
 261         GATE_SCLK(SCLK_LCD, "sclk_lcd", "dout_lcd", SCLK_GATE, 14),
 262         GATE_SCLK(SCLK_POST0_27, "sclk_post0_27", "clk27m", SCLK_GATE, 12),
 263         GATE_SCLK(SCLK_POST0, "sclk_post0", "dout_lcd", SCLK_GATE, 10),
 264         GATE_SCLK(SCLK_AUDIO1, "sclk_audio1", "dout_audio1", SCLK_GATE, 9),
 265         GATE_SCLK(SCLK_AUDIO0, "sclk_audio0", "dout_audio0", SCLK_GATE, 8),
 266         GATE_SCLK(SCLK_SECUR, "sclk_secur", "dout_secur", SCLK_GATE, 7),
 267         GATE_SCLK(SCLK_IRDA, "sclk_irda", "dout_irda", SCLK_GATE, 6),
 268         GATE_SCLK(SCLK_UART, "sclk_uart", "dout_uart", SCLK_GATE, 5),
 269         GATE_SCLK(SCLK_MFC, "sclk_mfc", "dout_mfc", SCLK_GATE, 3),
 270         GATE_SCLK(SCLK_CAM, "sclk_cam", "dout_cam", SCLK_GATE, 2),
 271         GATE_SCLK(SCLK_JPEG, "sclk_jpeg", "dout_jpeg", SCLK_GATE, 1),
 272 };
 273
 274 /* List of clock gates present on S3C6400. */
 275 GATE_CLOCKS(s3c6400_gate_clks) __initdata = {
 276         GATE_ON(HCLK_DDR0, "hclk_ddr0", "hclk", HCLK_GATE, 23),
 277         GATE_SCLK(SCLK_ONENAND, "sclk_onenand", "parent", SCLK_GATE, 4),
 278 };
 279
 280 /* List of clock gates present on S3C6410. */
 281 GATE_CLOCKS(s3c6410_gate_clks) __initdata = {
 282         GATE_BUS(HCLK_3DSE, "hclk_3dse", "hclk", HCLK_GATE, 31),
 283         GATE_ON(HCLK_IROM, "hclk_irom", "hclk", HCLK_GATE, 25),
 284         GATE_ON(HCLK_MEM1, "hclk_mem1", "hclk", HCLK_GATE, 22),
 285         GATE_ON(HCLK_MEM0, "hclk_mem0", "hclk", HCLK_GATE, 21),
 286         GATE_BUS(HCLK_MFC, "hclk_mfc", "hclk", HCLK_GATE, 0),
 287         GATE_BUS(PCLK_IIC1, "pclk_iic1", "pclk", PCLK_GATE, 27),
 288         GATE_BUS(PCLK_IIS2, "pclk_iis2", "pclk", PCLK_GATE, 26),
 289         GATE_SCLK(SCLK_FIMC, "sclk_fimc", "dout_fimc", SCLK_GATE, 13),
 290         GATE_SCLK(SCLK_AUDIO2, "sclk_audio2", "dout_audio2", SCLK_GATE, 11),
 291         GATE_BUS(MEM0_CFCON, "mem0_cfcon", "hclk_mem0", MEM0_GATE, 5),
 292         GATE_BUS(MEM0_ONENAND1, "mem0_onenand1", "hclk_mem0", MEM0_GATE, 4),
 293         GATE_BUS(MEM0_ONENAND0, "mem0_onenand0", "hclk_mem0", MEM0_GATE, 3),
 294         GATE_BUS(MEM0_NFCON, "mem0_nfcon", "hclk_mem0", MEM0_GATE, 2),
 295         GATE_ON(MEM0_SROM, "mem0_srom", "hclk_mem0", MEM0_GATE, 1),
 296 };
 297
 298 /* List of PLL clocks. */
 299 static struct samsung_pll_clock s3c64xx_pll_clks[] __initdata = {
 300         PLL(pll_6552, FOUT_APLL, "fout_apll", "fin_pll",
 301                                         APLL_LOCK, APLL_CON, NULL),
 302         PLL(pll_6552, FOUT_MPLL, "fout_mpll", "fin_pll",
 303                                         MPLL_LOCK, MPLL_CON, NULL),
 304         PLL(pll_6553, FOUT_EPLL, "fout_epll", "fin_pll",
 305                                         EPLL_LOCK, EPLL_CON0, NULL),
 306 };
 307
 308 /* Aliases for common s3c64xx clocks. */
 309 static struct samsung_clock_alias s3c64xx_clock_aliases[] = {
 310         ALIAS(FOUT_APLL, NULL, "fout_apll"),
 311         ALIAS(FOUT_MPLL, NULL, "fout_mpll"),
 312         ALIAS(FOUT_EPLL, NULL, "fout_epll"),
 313         ALIAS(MOUT_EPLL, NULL, "mout_epll"),
 314         ALIAS(DOUT_MPLL, NULL, "dout_mpll"),
 315         ALIAS(HCLKX2, NULL, "hclk2"),
 316         ALIAS(HCLK, NULL, "hclk"),
 317         ALIAS(PCLK, NULL, "pclk"),
 318         ALIAS(PCLK, NULL, "clk_uart_baud2"),
 319         ALIAS(ARMCLK, NULL, "armclk"),
 320         ALIAS(HCLK_UHOST, "s3c2410-ohci", "usb-host"),
 321         ALIAS(HCLK_USB, "s3c-hsotg", "otg"),
 322         ALIAS(HCLK_HSMMC2, "s3c-sdhci.2", "hsmmc"),
 323         ALIAS(HCLK_HSMMC2, "s3c-sdhci.2", "mmc_busclk.0"),
 324         ALIAS(HCLK_HSMMC1, "s3c-sdhci.1", "hsmmc"),
 325         ALIAS(HCLK_HSMMC1, "s3c-sdhci.1", "mmc_busclk.0"),
 326         ALIAS(HCLK_HSMMC0, "s3c-sdhci.0", "hsmmc"),
 327         ALIAS(HCLK_HSMMC0, "s3c-sdhci.0", "mmc_busclk.0"),
 328         ALIAS(HCLK_DMA1, "dma-pl080s.1", "apb_pclk"),
 329         ALIAS(HCLK_DMA0, "dma-pl080s.0", "apb_pclk"),
 330         ALIAS(HCLK_CAMIF, "s3c-camif", "camif"),
 331         ALIAS(HCLK_LCD, "s3c-fb", "lcd"),
 332         ALIAS(PCLK_SPI1, "s3c6410-spi.1", "spi"),
 333         ALIAS(PCLK_SPI0, "s3c6410-spi.0", "spi"),
 334         ALIAS(PCLK_IIC0, "s3c2440-i2c.0", "i2c"),
 335         ALIAS(PCLK_IIS1, "samsung-i2s.1", "iis"),
 336         ALIAS(PCLK_IIS0, "samsung-i2s.0", "iis"),
 337         ALIAS(PCLK_AC97, "samsung-ac97", "ac97"),
 338         ALIAS(PCLK_TSADC, "s3c64xx-adc", "adc"),
 339         ALIAS(PCLK_KEYPAD, "samsung-keypad", "keypad"),
 340         ALIAS(PCLK_PCM1, "samsung-pcm.1", "pcm"),
 341         ALIAS(PCLK_PCM0, "samsung-pcm.0", "pcm"),
 342         ALIAS(PCLK_PWM, NULL, "timers"),
 343         ALIAS(PCLK_RTC, "s3c64xx-rtc", "rtc"),
 344         ALIAS(PCLK_WDT, NULL, "watchdog"),
 345         ALIAS(PCLK_UART3, "s3c6400-uart.3", "uart"),
 346         ALIAS(PCLK_UART2, "s3c6400-uart.2", "uart"),
 347         ALIAS(PCLK_UART1, "s3c6400-uart.1", "uart"),
 348         ALIAS(PCLK_UART0, "s3c6400-uart.0", "uart"),
 349         ALIAS(SCLK_UHOST, "s3c2410-ohci", "usb-bus-host"),
 350         ALIAS(SCLK_MMC2, "s3c-sdhci.2", "mmc_busclk.2"),
 351         ALIAS(SCLK_MMC1, "s3c-sdhci.1", "mmc_busclk.2"),
 352         ALIAS(SCLK_MMC0, "s3c-sdhci.0", "mmc_busclk.2"),
 353         ALIAS(PCLK_SPI1, "s3c6410-spi.1", "spi_busclk0"),
 354         ALIAS(SCLK_SPI1, "s3c6410-spi.1", "spi_busclk2"),
 355         ALIAS(PCLK_SPI0, "s3c6410-spi.0", "spi_busclk0"),
 356         ALIAS(SCLK_SPI0, "s3c6410-spi.0", "spi_busclk2"),
 357         ALIAS(SCLK_AUDIO1, "samsung-pcm.1", "audio-bus"),
 358         ALIAS(SCLK_AUDIO1, "samsung-i2s.1", "audio-bus"),
 359         ALIAS(SCLK_AUDIO0, "samsung-pcm.0", "audio-bus"),
 360         ALIAS(SCLK_AUDIO0, "samsung-i2s.0", "audio-bus"),
 361         ALIAS(SCLK_UART, NULL, "clk_uart_baud3"),
 362         ALIAS(SCLK_CAM, "s3c-camif", "camera"),
 363 };
 364
 365 /* Aliases for s3c6400-specific clocks. */
 366 static struct samsung_clock_alias s3c6400_clock_aliases[] = {
 367         /* Nothing to place here yet. */
 368 };
 369
 370 /* Aliases for s3c6410-specific clocks. */
 371 static struct samsung_clock_alias s3c6410_clock_aliases[] = {
 372         ALIAS(PCLK_IIC1, "s3c2440-i2c.1", "i2c"),
 373         ALIAS(PCLK_IIS2, "samsung-i2s.2", "iis"),
 374         ALIAS(SCLK_FIMC, "s3c-camif", "fimc"),
 375         ALIAS(SCLK_AUDIO2, "samsung-i2s.2", "audio-bus"),
 376         ALIAS(MEM0_SROM, NULL, "srom"),
 377 };
 378
 379 static void __init s3c64xx_clk_register_fixed_ext(
 380                                 struct samsung_clk_provider *ctx,
 381                                 unsigned long fin_pll_f,
 382                                 unsigned long xusbxti_f)
 383 {
 384         s3c64xx_fixed_rate_ext_clks[0].fixed_rate = fin_pll_f;
 385         s3c64xx_fixed_rate_ext_clks[1].fixed_rate = xusbxti_f;
 386         samsung_clk_register_fixed_rate(ctx, s3c64xx_fixed_rate_ext_clks,
 387                                 ARRAY_SIZE(s3c64xx_fixed_rate_ext_clks));
 388 }
 389
 390 /* Register s3c64xx clocks. */
 391 void __init s3c64xx_clk_init(struct device_node *np, unsigned long xtal_f,
 392                              unsigned long xusbxti_f, bool s3c6400,
 393                              void __iomem *base)
 394 {
 395         struct samsung_clk_provider *ctx;
 396
 397         reg_base = base;
 398         is_s3c6400 = s3c6400;
 399
 400         if (np) {
 401                 reg_base = of_iomap(np, 0);
 402                 if (!reg_base)
 403                         panic("%s: failed to map registers\n", __func__);
 404         }
 405
 406         ctx = samsung_clk_init(np, reg_base, NR_CLKS);
 407
 408         /* Register external clocks. */
 409         if (!np)
 410                 s3c64xx_clk_register_fixed_ext(ctx, xtal_f, xusbxti_f);
 411
 412         /* Register PLLs. */
 413         samsung_clk_register_pll(ctx, s3c64xx_pll_clks,
 414                                 ARRAY_SIZE(s3c64xx_pll_clks), reg_base);
 415
 416         /* Register common internal clocks. */
 417         samsung_clk_register_fixed_rate(ctx, s3c64xx_fixed_rate_clks,
 418                                         ARRAY_SIZE(s3c64xx_fixed_rate_clks));
 419         samsung_clk_register_mux(ctx, s3c64xx_mux_clks,
 420                                         ARRAY_SIZE(s3c64xx_mux_clks));
 421         samsung_clk_register_div(ctx, s3c64xx_div_clks,
 422                                         ARRAY_SIZE(s3c64xx_div_clks));
 423         samsung_clk_register_gate(ctx, s3c64xx_gate_clks,
 424                                         ARRAY_SIZE(s3c64xx_gate_clks));
 425
 426         /* Register SoC-specific clocks. */
 427         if (is_s3c6400) {
 428                 samsung_clk_register_mux(ctx, s3c6400_mux_clks,
 429                                         ARRAY_SIZE(s3c6400_mux_clks));
 430                 samsung_clk_register_div(ctx, s3c6400_div_clks,
 431                                         ARRAY_SIZE(s3c6400_div_clks));
 432                 samsung_clk_register_gate(ctx, s3c6400_gate_clks,
 433                                         ARRAY_SIZE(s3c6400_gate_clks));
 434                 samsung_clk_register_alias(ctx, s3c6400_clock_aliases,
 435                                         ARRAY_SIZE(s3c6400_clock_aliases));
 436         } else {
 437                 samsung_clk_register_mux(ctx, s3c6410_mux_clks,
 438                                         ARRAY_SIZE(s3c6410_mux_clks));
 439                 samsung_clk_register_div(ctx, s3c6410_div_clks,
 440                                         ARRAY_SIZE(s3c6410_div_clks));
 441                 samsung_clk_register_gate(ctx, s3c6410_gate_clks,
 442                                         ARRAY_SIZE(s3c6410_gate_clks));
 443                 samsung_clk_register_alias(ctx, s3c6410_clock_aliases,
 444                                         ARRAY_SIZE(s3c6410_clock_aliases));
 445         }
 446
 447         samsung_clk_register_alias(ctx, s3c64xx_clock_aliases,
 448                                         ARRAY_SIZE(s3c64xx_clock_aliases));
 449
 450         samsung_clk_sleep_init(reg_base, s3c64xx_clk_regs,
 451                                ARRAY_SIZE(s3c64xx_clk_regs));
 452         if (!is_s3c6400)
 453                 samsung_clk_sleep_init(reg_base, s3c6410_clk_regs,
 454                                        ARRAY_SIZE(s3c6410_clk_regs));
 455
 456         samsung_clk_of_add_provider(np, ctx);
 457
 458         pr_info("%s clocks: apll = %lu, mpll = %lu\n"
 459                 "\tepll = %lu, arm_clk = %lu\n",
 460                 is_s3c6400 ? "S3C6400" : "S3C6410",
 461                 _get_rate("fout_apll"), _get_rate("fout_mpll"),
 462                 _get_rate("fout_epll"), _get_rate("armclk"));
 463 }
 464
 465 static void __init s3c6400_clk_init(struct device_node *np)
 466 {
 467         s3c64xx_clk_init(np, 0, 0, true, NULL);
 468 }
 469 CLK_OF_DECLARE(s3c6400_clk, "samsung,s3c6400-clock", s3c6400_clk_init);
 470
 471 static void __init s3c6410_clk_init(struct device_node *np)
 472 {
 473         s3c64xx_clk_init(np, 0, 0, false, NULL);
 474 }
 475 CLK_OF_DECLARE(s3c6410_clk, "samsung,s3c6410-clock", s3c6410_clk_init);