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clk-s3c64xx.c
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linux-6.19.14/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/clk/samsung.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 55static void __iomem *reg_base; 56static bool is_s3c6400; 57 58/* 59 * List of controller registers to be saved and restored during 60 * a suspend/resume cycle. 61 */ 62static 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 79static unsigned long s3c6410_clk_regs[] __initdata = { 80 CLK_SRC2, 81 MEM0_GATE, 82}; 83 84/* List of parent clocks common for all S3C64xx SoCs. */ 85PNAME(spi_mmc_p) = { "mout_epll", "dout_mpll", "fin_pll", "clk27m" }; 86PNAME(uart_p) = { "mout_epll", "dout_mpll" }; 87PNAME(audio0_p) = { "mout_epll", "dout_mpll", "fin_pll", "iiscdclk0", 88 "pcmcdclk0", "none", "none", "none" }; 89PNAME(audio1_p) = { "mout_epll", "dout_mpll", "fin_pll", "iiscdclk1", 90 "pcmcdclk0", "none", "none", "none" }; 91PNAME(mfc_p) = { "hclkx2", "mout_epll" }; 92PNAME(apll_p) = { "fin_pll", "fout_apll" }; 93PNAME(mpll_p) = { "fin_pll", "fout_mpll" }; 94PNAME(epll_p) = { "fin_pll", "fout_epll" }; 95PNAME(hclkx2_p) = { "mout_mpll", "mout_apll" }; 96 97/* S3C6400-specific parent clocks. */ 98PNAME(scaler_lcd_p6400) = { "mout_epll", "dout_mpll", "none", "none" }; 99PNAME(irda_p6400) = { "mout_epll", "dout_mpll", "none", "clk48m" }; 100PNAME(uhost_p6400) = { "clk48m", "mout_epll", "dout_mpll", "none" }; 101 102/* S3C6410-specific parent clocks. */ 103PNAME(clk27_p6410) = { "clk27m", "fin_pll" }; 104PNAME(scaler_lcd_p6410) = { "mout_epll", "dout_mpll", "fin_pll", "none" }; 105PNAME(irda_p6410) = { "mout_epll", "dout_mpll", "fin_pll", "clk48m" }; 106PNAME(uhost_p6410) = { "clk48m", "mout_epll", "dout_mpll", "fin_pll" }; 107PNAME(audio2_p6410) = { "mout_epll", "dout_mpll", "fin_pll", "iiscdclk2", 108 "pcmcdclk1", "none", "none", "none" }; 109 110/* Fixed rate clocks generated outside the SoC. */ 111FIXED_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. */ 117FIXED_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. */ 123MUX_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. */ 140MUX_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. */ 148MUX_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. */ 159DIV_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. */ 183DIV_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. */ 188DIV_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. */ 195GATE_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. */ 275GATE_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. */ 281GATE_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. */ 299static 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. */ 309static 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. */ 366static struct samsung_clock_alias s3c6400_clock_aliases[] = { 367 /* Nothing to place here yet. */ 368}; 369 370/* Aliases for s3c6410-specific clocks. */ 371static 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 379static 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. */ 391void __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 struct clk_hw **hws; 397 398 reg_base = base; 399 is_s3c6400 = s3c6400; 400 401 if (np) { 402 reg_base = of_iomap(np, 0); 403 if (!reg_base) 404 panic("%s: failed to map registers\n", __func__); 405 } 406 407 ctx = samsung_clk_init(NULL, reg_base, NR_CLKS); 408 hws = ctx->clk_data.hws; 409 410 /* Register external clocks. */ 411 if (!np) 412 s3c64xx_clk_register_fixed_ext(ctx, xtal_f, xusbxti_f); 413 414 /* Register PLLs. */ 415 samsung_clk_register_pll(ctx, s3c64xx_pll_clks, 416 ARRAY_SIZE(s3c64xx_pll_clks)); 417 418 /* Register common internal clocks. */ 419 samsung_clk_register_fixed_rate(ctx, s3c64xx_fixed_rate_clks, 420 ARRAY_SIZE(s3c64xx_fixed_rate_clks)); 421 samsung_clk_register_mux(ctx, s3c64xx_mux_clks, 422 ARRAY_SIZE(s3c64xx_mux_clks)); 423 samsung_clk_register_div(ctx, s3c64xx_div_clks, 424 ARRAY_SIZE(s3c64xx_div_clks)); 425 samsung_clk_register_gate(ctx, s3c64xx_gate_clks, 426 ARRAY_SIZE(s3c64xx_gate_clks)); 427 428 /* Register SoC-specific clocks. */ 429 if (is_s3c6400) { 430 samsung_clk_register_mux(ctx, s3c6400_mux_clks, 431 ARRAY_SIZE(s3c6400_mux_clks)); 432 samsung_clk_register_div(ctx, s3c6400_div_clks, 433 ARRAY_SIZE(s3c6400_div_clks)); 434 samsung_clk_register_gate(ctx, s3c6400_gate_clks, 435 ARRAY_SIZE(s3c6400_gate_clks)); 436 samsung_clk_register_alias(ctx, s3c6400_clock_aliases, 437 ARRAY_SIZE(s3c6400_clock_aliases)); 438 } else { 439 samsung_clk_register_mux(ctx, s3c6410_mux_clks, 440 ARRAY_SIZE(s3c6410_mux_clks)); 441 samsung_clk_register_div(ctx, s3c6410_div_clks, 442 ARRAY_SIZE(s3c6410_div_clks)); 443 samsung_clk_register_gate(ctx, s3c6410_gate_clks, 444 ARRAY_SIZE(s3c6410_gate_clks)); 445 samsung_clk_register_alias(ctx, s3c6410_clock_aliases, 446 ARRAY_SIZE(s3c6410_clock_aliases)); 447 } 448 449 samsung_clk_register_alias(ctx, s3c64xx_clock_aliases, 450 ARRAY_SIZE(s3c64xx_clock_aliases)); 451 452 samsung_clk_sleep_init(reg_base, s3c64xx_clk_regs, 453 ARRAY_SIZE(s3c64xx_clk_regs)); 454 if (!is_s3c6400) 455 samsung_clk_sleep_init(reg_base, s3c6410_clk_regs, 456 ARRAY_SIZE(s3c6410_clk_regs)); 457 458 samsung_clk_of_add_provider(np, ctx); 459 460 pr_info("%s clocks: apll = %lu, mpll = %lu\n" 461 "\tepll = %lu, arm_clk = %lu\n", 462 is_s3c6400 ? "S3C6400" : "S3C6410", 463 clk_hw_get_rate(hws[MOUT_APLL]), 464 clk_hw_get_rate(hws[MOUT_MPLL]), 465 clk_hw_get_rate(hws[MOUT_EPLL]), 466 clk_hw_get_rate(hws[ARMCLK])); 467} 468 469static void __init s3c6400_clk_init(struct device_node *np) 470{ 471 s3c64xx_clk_init(np, 0, 0, true, NULL); 472} 473CLK_OF_DECLARE(s3c6400_clk, "samsung,s3c6400-clock", s3c6400_clk_init); 474 475static void __init s3c6410_clk_init(struct device_node *np) 476{ 477 s3c64xx_clk_init(np, 0, 0, false, NULL); 478} 479CLK_OF_DECLARE(s3c6410_clk, "samsung,s3c6410-clock", s3c6410_clk_init);
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