1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * Copyright (c) 2013 Samsung Electronics Co., Ltd. 4 * Author: Tarek Dakhran <t.dakhran@samsung.com> 5 * 6 * Common Clock Framework support for Exynos5410 SoC. 7 */ 8 9 #include <dt-bindings/clock/exynos5410.h> 10 11 #include <linux/clk-provider.h> 12 #include <linux/of.h> 13 #include <linux/of_address.h> 14 #include <linux/clk.h> 15 16 #include "clk.h" 17 18 #define APLL_LOCK 0x0 19 #define APLL_CON0 0x100 20 #define CPLL_LOCK 0x10020 21 #define CPLL_CON0 0x10120 22 #define EPLL_LOCK 0x10040 23 #define EPLL_CON0 0x10130 24 #define MPLL_LOCK 0x4000 25 #define MPLL_CON0 0x4100 26 #define BPLL_LOCK 0x20010 27 #define BPLL_CON0 0x20110 28 #define KPLL_LOCK 0x28000 29 #define KPLL_CON0 0x28100 30 31 #define SRC_CPU 0x200 32 #define DIV_CPU0 0x500 33 #define SRC_CPERI1 0x4204 34 #define GATE_IP_G2D 0x8800 35 #define DIV_TOP0 0x10510 36 #define DIV_TOP1 0x10514 37 #define DIV_FSYS0 0x10548 38 #define DIV_FSYS1 0x1054c 39 #define DIV_FSYS2 0x10550 40 #define DIV_PERIC0 0x10558 41 #define DIV_PERIC3 0x10564 42 #define SRC_TOP0 0x10210 43 #define SRC_TOP1 0x10214 44 #define SRC_TOP2 0x10218 45 #define SRC_FSYS 0x10244 46 #define SRC_PERIC0 0x10250 47 #define SRC_MASK_FSYS 0x10340 48 #define SRC_MASK_PERIC0 0x10350 49 #define GATE_BUS_FSYS0 0x10740 50 #define GATE_TOP_SCLK_FSYS 0x10840 51 #define GATE_TOP_SCLK_PERIC 0x10850 52 #define GATE_IP_FSYS 0x10944 53 #define GATE_IP_PERIC 0x10950 54 #define GATE_IP_PERIS 0x10960 55 #define SRC_CDREX 0x20200 56 #define SRC_KFC 0x28200 57 #define DIV_KFC0 0x28500 58 59 /* list of PLLs */ 60 enum exynos5410_plls { 61 apll, cpll, epll, mpll, 62 bpll, kpll, 63 nr_plls /* number of PLLs */ 64 }; 65 66 /* list of all parent clocks */ 67 PNAME(apll_p) = { "fin_pll", "fout_apll", }; 68 PNAME(bpll_p) = { "fin_pll", "fout_bpll", }; 69 PNAME(cpll_p) = { "fin_pll", "fout_cpll" }; 70 PNAME(epll_p) = { "fin_pll", "fout_epll" }; 71 PNAME(mpll_p) = { "fin_pll", "fout_mpll", }; 72 PNAME(kpll_p) = { "fin_pll", "fout_kpll", }; 73 74 PNAME(mout_cpu_p) = { "mout_apll", "sclk_mpll", }; 75 PNAME(mout_kfc_p) = { "mout_kpll", "sclk_mpll", }; 76 77 PNAME(mpll_user_p) = { "fin_pll", "sclk_mpll", }; 78 PNAME(bpll_user_p) = { "fin_pll", "sclk_bpll", }; 79 PNAME(mpll_bpll_p) = { "sclk_mpll_muxed", "sclk_bpll_muxed", }; 80 PNAME(sclk_mpll_bpll_p) = { "sclk_mpll_bpll", "fin_pll", }; 81 82 PNAME(group2_p) = { "fin_pll", "fin_pll", "none", "none", 83 "none", "none", "sclk_mpll_bpll", 84 "none", "none", "sclk_cpll" }; 85 86 static const struct samsung_mux_clock exynos5410_mux_clks[] __initconst = { 87 MUX(0, "mout_apll", apll_p, SRC_CPU, 0, 1), 88 MUX(0, "mout_cpu", mout_cpu_p, SRC_CPU, 16, 1), 89 90 MUX(0, "mout_kpll", kpll_p, SRC_KFC, 0, 1), 91 MUX(0, "mout_kfc", mout_kfc_p, SRC_KFC, 16, 1), 92 93 MUX(0, "sclk_mpll", mpll_p, SRC_CPERI1, 8, 1), 94 MUX(0, "sclk_mpll_muxed", mpll_user_p, SRC_TOP2, 20, 1), 95 96 MUX(0, "sclk_bpll", bpll_p, SRC_CDREX, 0, 1), 97 MUX(0, "sclk_bpll_muxed", bpll_user_p, SRC_TOP2, 24, 1), 98 99 MUX(0, "sclk_epll", epll_p, SRC_TOP2, 12, 1), 100 101 MUX(0, "sclk_cpll", cpll_p, SRC_TOP2, 8, 1), 102 103 MUX(0, "sclk_mpll_bpll", mpll_bpll_p, SRC_TOP1, 20, 1), 104 105 MUX(0, "mout_mmc0", group2_p, SRC_FSYS, 0, 4), 106 MUX(0, "mout_mmc1", group2_p, SRC_FSYS, 4, 4), 107 MUX(0, "mout_mmc2", group2_p, SRC_FSYS, 8, 4), 108 MUX(0, "mout_usbd300", sclk_mpll_bpll_p, SRC_FSYS, 28, 1), 109 MUX(0, "mout_usbd301", sclk_mpll_bpll_p, SRC_FSYS, 29, 1), 110 111 MUX(0, "mout_uart0", group2_p, SRC_PERIC0, 0, 4), 112 MUX(0, "mout_uart1", group2_p, SRC_PERIC0, 4, 4), 113 MUX(0, "mout_uart2", group2_p, SRC_PERIC0, 8, 4), 114 MUX(0, "mout_uart3", group2_p, SRC_PERIC0, 12, 4), 115 MUX(0, "mout_pwm", group2_p, SRC_PERIC0, 24, 4), 116 117 MUX(0, "mout_aclk200", mpll_bpll_p, SRC_TOP0, 12, 1), 118 MUX(0, "mout_aclk400", mpll_bpll_p, SRC_TOP0, 20, 1), 119 }; 120 121 static const struct samsung_div_clock exynos5410_div_clks[] __initconst = { 122 DIV(0, "div_arm", "mout_cpu", DIV_CPU0, 0, 3), 123 DIV(0, "div_arm2", "div_arm", DIV_CPU0, 28, 3), 124 125 DIV(0, "div_acp", "div_arm2", DIV_CPU0, 8, 3), 126 DIV(0, "div_cpud", "div_arm2", DIV_CPU0, 4, 3), 127 DIV(0, "div_atb", "div_arm2", DIV_CPU0, 16, 3), 128 DIV(0, "pclk_dbg", "div_arm2", DIV_CPU0, 20, 3), 129 130 DIV(0, "div_kfc", "mout_kfc", DIV_KFC0, 0, 3), 131 DIV(0, "div_aclk", "div_kfc", DIV_KFC0, 4, 3), 132 DIV(0, "div_pclk", "div_kfc", DIV_KFC0, 20, 3), 133 134 DIV(0, "aclk66_pre", "sclk_mpll_muxed", DIV_TOP1, 24, 3), 135 DIV(0, "aclk66", "aclk66_pre", DIV_TOP0, 0, 3), 136 137 DIV(0, "dout_usbphy300", "mout_usbd300", DIV_FSYS0, 16, 4), 138 DIV(0, "dout_usbphy301", "mout_usbd301", DIV_FSYS0, 20, 4), 139 DIV(0, "dout_usbd300", "mout_usbd300", DIV_FSYS0, 24, 4), 140 DIV(0, "dout_usbd301", "mout_usbd301", DIV_FSYS0, 28, 4), 141 142 DIV(0, "div_mmc0", "mout_mmc0", DIV_FSYS1, 0, 4), 143 DIV(0, "div_mmc1", "mout_mmc1", DIV_FSYS1, 16, 4), 144 DIV(0, "div_mmc2", "mout_mmc2", DIV_FSYS2, 0, 4), 145 146 DIV_F(0, "div_mmc_pre0", "div_mmc0", 147 DIV_FSYS1, 8, 8, CLK_SET_RATE_PARENT, 0), 148 DIV_F(0, "div_mmc_pre1", "div_mmc1", 149 DIV_FSYS1, 24, 8, CLK_SET_RATE_PARENT, 0), 150 DIV_F(0, "div_mmc_pre2", "div_mmc2", 151 DIV_FSYS2, 8, 8, CLK_SET_RATE_PARENT, 0), 152 153 DIV(0, "div_uart0", "mout_uart0", DIV_PERIC0, 0, 4), 154 DIV(0, "div_uart1", "mout_uart1", DIV_PERIC0, 4, 4), 155 DIV(0, "div_uart2", "mout_uart2", DIV_PERIC0, 8, 4), 156 DIV(0, "div_uart3", "mout_uart3", DIV_PERIC0, 12, 4), 157 158 DIV(0, "dout_pwm", "mout_pwm", DIV_PERIC3, 0, 4), 159 160 DIV(0, "aclk200", "mout_aclk200", DIV_TOP0, 12, 3), 161 DIV(0, "aclk266", "mpll_user_p", DIV_TOP0, 16, 3), 162 DIV(0, "aclk400", "mout_aclk400", DIV_TOP0, 24, 3), 163 }; 164 165 static const struct samsung_gate_clock exynos5410_gate_clks[] __initconst = { 166 GATE(CLK_SSS, "sss", "aclk266", GATE_IP_G2D, 2, 0, 0), 167 GATE(CLK_MCT, "mct", "aclk66", GATE_IP_PERIS, 18, 0, 0), 168 GATE(CLK_WDT, "wdt", "aclk66", GATE_IP_PERIS, 19, 0, 0), 169 GATE(CLK_RTC, "rtc", "aclk66", GATE_IP_PERIS, 20, 0, 0), 170 GATE(CLK_TMU, "tmu", "aclk66", GATE_IP_PERIS, 21, 0, 0), 171 172 GATE(CLK_SCLK_MMC0, "sclk_mmc0", "div_mmc_pre0", 173 SRC_MASK_FSYS, 0, CLK_SET_RATE_PARENT, 0), 174 GATE(CLK_SCLK_MMC1, "sclk_mmc1", "div_mmc_pre1", 175 SRC_MASK_FSYS, 4, CLK_SET_RATE_PARENT, 0), 176 GATE(CLK_SCLK_MMC2, "sclk_mmc2", "div_mmc_pre2", 177 SRC_MASK_FSYS, 8, CLK_SET_RATE_PARENT, 0), 178 179 GATE(CLK_MMC0, "sdmmc0", "aclk200", GATE_BUS_FSYS0, 12, 0, 0), 180 GATE(CLK_MMC1, "sdmmc1", "aclk200", GATE_BUS_FSYS0, 13, 0, 0), 181 GATE(CLK_MMC2, "sdmmc2", "aclk200", GATE_BUS_FSYS0, 14, 0, 0), 182 GATE(CLK_PDMA1, "pdma1", "aclk200", GATE_BUS_FSYS0, 2, 0, 0), 183 GATE(CLK_PDMA0, "pdma0", "aclk200", GATE_BUS_FSYS0, 1, 0, 0), 184 185 GATE(CLK_SCLK_USBPHY301, "sclk_usbphy301", "dout_usbphy301", 186 GATE_TOP_SCLK_FSYS, 7, CLK_SET_RATE_PARENT, 0), 187 GATE(CLK_SCLK_USBPHY300, "sclk_usbphy300", "dout_usbphy300", 188 GATE_TOP_SCLK_FSYS, 8, CLK_SET_RATE_PARENT, 0), 189 GATE(CLK_SCLK_USBD300, "sclk_usbd300", "dout_usbd300", 190 GATE_TOP_SCLK_FSYS, 9, CLK_SET_RATE_PARENT, 0), 191 GATE(CLK_SCLK_USBD301, "sclk_usbd301", "dout_usbd301", 192 GATE_TOP_SCLK_FSYS, 10, CLK_SET_RATE_PARENT, 0), 193 194 GATE(CLK_SCLK_PWM, "sclk_pwm", "dout_pwm", 195 GATE_TOP_SCLK_PERIC, 11, CLK_SET_RATE_PARENT, 0), 196 197 GATE(CLK_UART0, "uart0", "aclk66", GATE_IP_PERIC, 0, 0, 0), 198 GATE(CLK_UART1, "uart1", "aclk66", GATE_IP_PERIC, 1, 0, 0), 199 GATE(CLK_UART2, "uart2", "aclk66", GATE_IP_PERIC, 2, 0, 0), 200 GATE(CLK_UART3, "uart3", "aclk66", GATE_IP_PERIC, 3, 0, 0), 201 GATE(CLK_I2C0, "i2c0", "aclk66", GATE_IP_PERIC, 6, 0, 0), 202 GATE(CLK_I2C1, "i2c1", "aclk66", GATE_IP_PERIC, 7, 0, 0), 203 GATE(CLK_I2C2, "i2c2", "aclk66", GATE_IP_PERIC, 8, 0, 0), 204 GATE(CLK_I2C3, "i2c3", "aclk66", GATE_IP_PERIC, 9, 0, 0), 205 GATE(CLK_USI0, "usi0", "aclk66", GATE_IP_PERIC, 10, 0, 0), 206 GATE(CLK_USI1, "usi1", "aclk66", GATE_IP_PERIC, 11, 0, 0), 207 GATE(CLK_USI2, "usi2", "aclk66", GATE_IP_PERIC, 12, 0, 0), 208 GATE(CLK_USI3, "usi3", "aclk66", GATE_IP_PERIC, 13, 0, 0), 209 GATE(CLK_TSADC, "tsadc", "aclk66", GATE_IP_PERIC, 15, 0, 0), 210 GATE(CLK_PWM, "pwm", "aclk66", GATE_IP_PERIC, 24, 0, 0), 211 212 GATE(CLK_SCLK_UART0, "sclk_uart0", "div_uart0", 213 SRC_MASK_PERIC0, 0, CLK_SET_RATE_PARENT, 0), 214 GATE(CLK_SCLK_UART1, "sclk_uart1", "div_uart1", 215 SRC_MASK_PERIC0, 4, CLK_SET_RATE_PARENT, 0), 216 GATE(CLK_SCLK_UART2, "sclk_uart2", "div_uart2", 217 SRC_MASK_PERIC0, 8, CLK_SET_RATE_PARENT, 0), 218 GATE(CLK_SCLK_UART3, "sclk_uart3", "div_uart3", 219 SRC_MASK_PERIC0, 12, CLK_SET_RATE_PARENT, 0), 220 221 GATE(CLK_USBH20, "usbh20", "aclk200_fsys", GATE_IP_FSYS, 18, 0, 0), 222 GATE(CLK_USBD300, "usbd300", "aclk200_fsys", GATE_IP_FSYS, 19, 0, 0), 223 GATE(CLK_USBD301, "usbd301", "aclk200_fsys", GATE_IP_FSYS, 20, 0, 0), 224 }; 225 226 static const struct samsung_pll_rate_table exynos5410_pll2550x_24mhz_tbl[] __initconst = { 227 PLL_36XX_RATE(24 * MHZ, 400000000U, 200, 3, 2, 0), 228 PLL_36XX_RATE(24 * MHZ, 333000000U, 111, 2, 2, 0), 229 PLL_36XX_RATE(24 * MHZ, 300000000U, 100, 2, 2, 0), 230 PLL_36XX_RATE(24 * MHZ, 266000000U, 266, 3, 3, 0), 231 PLL_36XX_RATE(24 * MHZ, 200000000U, 200, 3, 3, 0), 232 PLL_36XX_RATE(24 * MHZ, 192000000U, 192, 3, 3, 0), 233 PLL_36XX_RATE(24 * MHZ, 166000000U, 166, 3, 3, 0), 234 PLL_36XX_RATE(24 * MHZ, 133000000U, 266, 3, 4, 0), 235 PLL_36XX_RATE(24 * MHZ, 100000000U, 200, 3, 4, 0), 236 PLL_36XX_RATE(24 * MHZ, 66000000U, 176, 2, 5, 0), 237 }; 238 239 static struct samsung_pll_clock exynos5410_plls[nr_plls] __initdata = { 240 [apll] = PLL(pll_35xx, CLK_FOUT_APLL, "fout_apll", "fin_pll", APLL_LOCK, 241 APLL_CON0, NULL), 242 [cpll] = PLL(pll_35xx, CLK_FOUT_CPLL, "fout_cpll", "fin_pll", CPLL_LOCK, 243 CPLL_CON0, NULL), 244 [epll] = PLL(pll_2650x, CLK_FOUT_EPLL, "fout_epll", "fin_pll", EPLL_LOCK, 245 EPLL_CON0, NULL), 246 [mpll] = PLL(pll_35xx, CLK_FOUT_MPLL, "fout_mpll", "fin_pll", MPLL_LOCK, 247 MPLL_CON0, NULL), 248 [bpll] = PLL(pll_35xx, CLK_FOUT_BPLL, "fout_bpll", "fin_pll", BPLL_LOCK, 249 BPLL_CON0, NULL), 250 [kpll] = PLL(pll_35xx, CLK_FOUT_KPLL, "fout_kpll", "fin_pll", KPLL_LOCK, 251 KPLL_CON0, NULL), 252 }; 253 254 static const struct samsung_cmu_info cmu __initconst = { 255 .pll_clks = exynos5410_plls, 256 .nr_pll_clks = ARRAY_SIZE(exynos5410_plls), 257 .mux_clks = exynos5410_mux_clks, 258 .nr_mux_clks = ARRAY_SIZE(exynos5410_mux_clks), 259 .div_clks = exynos5410_div_clks, 260 .nr_div_clks = ARRAY_SIZE(exynos5410_div_clks), 261 .gate_clks = exynos5410_gate_clks, 262 .nr_gate_clks = ARRAY_SIZE(exynos5410_gate_clks), 263 .nr_clk_ids = CLK_NR_CLKS, 264 }; 265 266 /* register exynos5410 clocks */ 267 static void __init exynos5410_clk_init(struct device_node *np) 268 { 269 struct clk *xxti = of_clk_get(np, 0); 270 271 if (!IS_ERR(xxti) && clk_get_rate(xxti) == 24 * MHZ) 272 exynos5410_plls[epll].rate_table = exynos5410_pll2550x_24mhz_tbl; 273 274 samsung_cmu_register_one(np, &cmu); 275 276 pr_debug("Exynos5410: clock setup completed.\n"); 277 } 278 CLK_OF_DECLARE(exynos5410_clk, "samsung,exynos5410-clock", exynos5410_clk_init); 279