1 /* 2 * r8a7796 Clock Pulse Generator / Module Standby and Software Reset 3 * 4 * Copyright (C) 2016 Glider bvba 5 * 6 * Based on r8a7795-cpg-mssr.c 7 * 8 * Copyright (C) 2015 Glider bvba 9 * Copyright (C) 2015 Renesas Electronics Corp. 10 * 11 * This program is free software; you can redistribute it and/or modify 12 * it under the terms of the GNU General Public License as published by 13 * the Free Software Foundation; version 2 of the License. 14 */ 15 16 #include <linux/device.h> 17 #include <linux/init.h> 18 #include <linux/kernel.h> 19 #include <linux/soc/renesas/rcar-rst.h> 20 21 #include <dt-bindings/clock/r8a7796-cpg-mssr.h> 22 23 #include "renesas-cpg-mssr.h" 24 #include "rcar-gen3-cpg.h" 25 26 enum clk_ids { 27 /* Core Clock Outputs exported to DT */ 28 LAST_DT_CORE_CLK = R8A7796_CLK_OSC, 29 30 /* External Input Clocks */ 31 CLK_EXTAL, 32 CLK_EXTALR, 33 34 /* Internal Core Clocks */ 35 CLK_MAIN, 36 CLK_PLL0, 37 CLK_PLL1, 38 CLK_PLL2, 39 CLK_PLL3, 40 CLK_PLL4, 41 CLK_PLL1_DIV2, 42 CLK_PLL1_DIV4, 43 CLK_S0, 44 CLK_S1, 45 CLK_S2, 46 CLK_S3, 47 CLK_SDSRC, 48 CLK_SSPSRC, 49 CLK_RINT, 50 51 /* Module Clocks */ 52 MOD_CLK_BASE 53 }; 54 55 static const struct cpg_core_clk r8a7796_core_clks[] __initconst = { 56 /* External Clock Inputs */ 57 DEF_INPUT("extal", CLK_EXTAL), 58 DEF_INPUT("extalr", CLK_EXTALR), 59 60 /* Internal Core Clocks */ 61 DEF_BASE(".main", CLK_MAIN, CLK_TYPE_GEN3_MAIN, CLK_EXTAL), 62 DEF_BASE(".pll0", CLK_PLL0, CLK_TYPE_GEN3_PLL0, CLK_MAIN), 63 DEF_BASE(".pll1", CLK_PLL1, CLK_TYPE_GEN3_PLL1, CLK_MAIN), 64 DEF_BASE(".pll2", CLK_PLL2, CLK_TYPE_GEN3_PLL2, CLK_MAIN), 65 DEF_BASE(".pll3", CLK_PLL3, CLK_TYPE_GEN3_PLL3, CLK_MAIN), 66 DEF_BASE(".pll4", CLK_PLL4, CLK_TYPE_GEN3_PLL4, CLK_MAIN), 67 68 DEF_FIXED(".pll1_div2", CLK_PLL1_DIV2, CLK_PLL1, 2, 1), 69 DEF_FIXED(".pll1_div4", CLK_PLL1_DIV4, CLK_PLL1_DIV2, 2, 1), 70 DEF_FIXED(".s0", CLK_S0, CLK_PLL1_DIV2, 2, 1), 71 DEF_FIXED(".s1", CLK_S1, CLK_PLL1_DIV2, 3, 1), 72 DEF_FIXED(".s2", CLK_S2, CLK_PLL1_DIV2, 4, 1), 73 DEF_FIXED(".s3", CLK_S3, CLK_PLL1_DIV2, 6, 1), 74 DEF_FIXED(".sdsrc", CLK_SDSRC, CLK_PLL1_DIV2, 2, 1), 75 76 /* Core Clock Outputs */ 77 DEF_FIXED("ztr", R8A7796_CLK_ZTR, CLK_PLL1_DIV2, 6, 1), 78 DEF_FIXED("ztrd2", R8A7796_CLK_ZTRD2, CLK_PLL1_DIV2, 12, 1), 79 DEF_FIXED("zt", R8A7796_CLK_ZT, CLK_PLL1_DIV2, 4, 1), 80 DEF_FIXED("zx", R8A7796_CLK_ZX, CLK_PLL1_DIV2, 2, 1), 81 DEF_FIXED("s0d1", R8A7796_CLK_S0D1, CLK_S0, 1, 1), 82 DEF_FIXED("s0d2", R8A7796_CLK_S0D2, CLK_S0, 2, 1), 83 DEF_FIXED("s0d3", R8A7796_CLK_S0D3, CLK_S0, 3, 1), 84 DEF_FIXED("s0d4", R8A7796_CLK_S0D4, CLK_S0, 4, 1), 85 DEF_FIXED("s0d6", R8A7796_CLK_S0D6, CLK_S0, 6, 1), 86 DEF_FIXED("s0d8", R8A7796_CLK_S0D8, CLK_S0, 8, 1), 87 DEF_FIXED("s0d12", R8A7796_CLK_S0D12, CLK_S0, 12, 1), 88 DEF_FIXED("s1d1", R8A7796_CLK_S1D1, CLK_S1, 1, 1), 89 DEF_FIXED("s1d2", R8A7796_CLK_S1D2, CLK_S1, 2, 1), 90 DEF_FIXED("s1d4", R8A7796_CLK_S1D4, CLK_S1, 4, 1), 91 DEF_FIXED("s2d1", R8A7796_CLK_S2D1, CLK_S2, 1, 1), 92 DEF_FIXED("s2d2", R8A7796_CLK_S2D2, CLK_S2, 2, 1), 93 DEF_FIXED("s2d4", R8A7796_CLK_S2D4, CLK_S2, 4, 1), 94 DEF_FIXED("s3d1", R8A7796_CLK_S3D1, CLK_S3, 1, 1), 95 DEF_FIXED("s3d2", R8A7796_CLK_S3D2, CLK_S3, 2, 1), 96 DEF_FIXED("s3d4", R8A7796_CLK_S3D4, CLK_S3, 4, 1), 97 98 DEF_GEN3_SD("sd0", R8A7796_CLK_SD0, CLK_SDSRC, 0x074), 99 DEF_GEN3_SD("sd1", R8A7796_CLK_SD1, CLK_SDSRC, 0x078), 100 DEF_GEN3_SD("sd2", R8A7796_CLK_SD2, CLK_SDSRC, 0x268), 101 DEF_GEN3_SD("sd3", R8A7796_CLK_SD3, CLK_SDSRC, 0x26c), 102 103 DEF_FIXED("cl", R8A7796_CLK_CL, CLK_PLL1_DIV2, 48, 1), 104 DEF_FIXED("cp", R8A7796_CLK_CP, CLK_EXTAL, 2, 1), 105 106 DEF_DIV6P1("canfd", R8A7796_CLK_CANFD, CLK_PLL1_DIV4, 0x244), 107 DEF_DIV6P1("csi0", R8A7796_CLK_CSI0, CLK_PLL1_DIV4, 0x00c), 108 DEF_DIV6P1("mso", R8A7796_CLK_MSO, CLK_PLL1_DIV4, 0x014), 109 DEF_DIV6P1("hdmi", R8A7796_CLK_HDMI, CLK_PLL1_DIV4, 0x250), 110 111 DEF_DIV6_RO("osc", R8A7796_CLK_OSC, CLK_EXTAL, CPG_RCKCR, 8), 112 DEF_DIV6_RO("r_int", CLK_RINT, CLK_EXTAL, CPG_RCKCR, 32), 113 114 DEF_BASE("r", R8A7796_CLK_R, CLK_TYPE_GEN3_R, CLK_RINT), 115 }; 116 117 static const struct mssr_mod_clk r8a7796_mod_clks[] __initconst = { 118 DEF_MOD("scif5", 202, R8A7796_CLK_S3D4), 119 DEF_MOD("scif4", 203, R8A7796_CLK_S3D4), 120 DEF_MOD("scif3", 204, R8A7796_CLK_S3D4), 121 DEF_MOD("scif1", 206, R8A7796_CLK_S3D4), 122 DEF_MOD("scif0", 207, R8A7796_CLK_S3D4), 123 DEF_MOD("msiof3", 208, R8A7796_CLK_MSO), 124 DEF_MOD("msiof2", 209, R8A7796_CLK_MSO), 125 DEF_MOD("msiof1", 210, R8A7796_CLK_MSO), 126 DEF_MOD("msiof0", 211, R8A7796_CLK_MSO), 127 DEF_MOD("sys-dmac2", 217, R8A7796_CLK_S0D3), 128 DEF_MOD("sys-dmac1", 218, R8A7796_CLK_S0D3), 129 DEF_MOD("sys-dmac0", 219, R8A7796_CLK_S0D3), 130 DEF_MOD("cmt3", 300, R8A7796_CLK_R), 131 DEF_MOD("cmt2", 301, R8A7796_CLK_R), 132 DEF_MOD("cmt1", 302, R8A7796_CLK_R), 133 DEF_MOD("cmt0", 303, R8A7796_CLK_R), 134 DEF_MOD("scif2", 310, R8A7796_CLK_S3D4), 135 DEF_MOD("sdif3", 311, R8A7796_CLK_SD3), 136 DEF_MOD("sdif2", 312, R8A7796_CLK_SD2), 137 DEF_MOD("sdif1", 313, R8A7796_CLK_SD1), 138 DEF_MOD("sdif0", 314, R8A7796_CLK_SD0), 139 DEF_MOD("pcie1", 318, R8A7796_CLK_S3D1), 140 DEF_MOD("pcie0", 319, R8A7796_CLK_S3D1), 141 DEF_MOD("usb3-if0", 328, R8A7796_CLK_S3D1), 142 DEF_MOD("usb-dmac0", 330, R8A7796_CLK_S3D1), 143 DEF_MOD("usb-dmac1", 331, R8A7796_CLK_S3D1), 144 DEF_MOD("rwdt", 402, R8A7796_CLK_R), 145 DEF_MOD("intc-ex", 407, R8A7796_CLK_CP), 146 DEF_MOD("intc-ap", 408, R8A7796_CLK_S0D3), 147 DEF_MOD("audmac1", 501, R8A7796_CLK_S0D3), 148 DEF_MOD("audmac0", 502, R8A7796_CLK_S0D3), 149 DEF_MOD("drif7", 508, R8A7796_CLK_S3D2), 150 DEF_MOD("drif6", 509, R8A7796_CLK_S3D2), 151 DEF_MOD("drif5", 510, R8A7796_CLK_S3D2), 152 DEF_MOD("drif4", 511, R8A7796_CLK_S3D2), 153 DEF_MOD("drif3", 512, R8A7796_CLK_S3D2), 154 DEF_MOD("drif2", 513, R8A7796_CLK_S3D2), 155 DEF_MOD("drif1", 514, R8A7796_CLK_S3D2), 156 DEF_MOD("drif0", 515, R8A7796_CLK_S3D2), 157 DEF_MOD("hscif4", 516, R8A7796_CLK_S3D1), 158 DEF_MOD("hscif3", 517, R8A7796_CLK_S3D1), 159 DEF_MOD("hscif2", 518, R8A7796_CLK_S3D1), 160 DEF_MOD("hscif1", 519, R8A7796_CLK_S3D1), 161 DEF_MOD("hscif0", 520, R8A7796_CLK_S3D1), 162 DEF_MOD("thermal", 522, R8A7796_CLK_CP), 163 DEF_MOD("pwm", 523, R8A7796_CLK_S0D12), 164 DEF_MOD("fcpvd2", 601, R8A7796_CLK_S0D2), 165 DEF_MOD("fcpvd1", 602, R8A7796_CLK_S0D2), 166 DEF_MOD("fcpvd0", 603, R8A7796_CLK_S0D2), 167 DEF_MOD("fcpvb0", 607, R8A7796_CLK_S0D1), 168 DEF_MOD("fcpvi0", 611, R8A7796_CLK_S0D1), 169 DEF_MOD("fcpf0", 615, R8A7796_CLK_S0D1), 170 DEF_MOD("fcpci0", 617, R8A7796_CLK_S0D2), 171 DEF_MOD("fcpcs", 619, R8A7796_CLK_S0D2), 172 DEF_MOD("vspd2", 621, R8A7796_CLK_S0D2), 173 DEF_MOD("vspd1", 622, R8A7796_CLK_S0D2), 174 DEF_MOD("vspd0", 623, R8A7796_CLK_S0D2), 175 DEF_MOD("vspb", 626, R8A7796_CLK_S0D1), 176 DEF_MOD("vspi0", 631, R8A7796_CLK_S0D1), 177 DEF_MOD("ehci1", 702, R8A7796_CLK_S3D4), 178 DEF_MOD("ehci0", 703, R8A7796_CLK_S3D4), 179 DEF_MOD("hsusb", 704, R8A7796_CLK_S3D4), 180 DEF_MOD("csi20", 714, R8A7796_CLK_CSI0), 181 DEF_MOD("csi40", 716, R8A7796_CLK_CSI0), 182 DEF_MOD("du2", 722, R8A7796_CLK_S2D1), 183 DEF_MOD("du1", 723, R8A7796_CLK_S2D1), 184 DEF_MOD("du0", 724, R8A7796_CLK_S2D1), 185 DEF_MOD("lvds", 727, R8A7796_CLK_S2D1), 186 DEF_MOD("hdmi0", 729, R8A7796_CLK_HDMI), 187 DEF_MOD("vin7", 804, R8A7796_CLK_S0D2), 188 DEF_MOD("vin6", 805, R8A7796_CLK_S0D2), 189 DEF_MOD("vin5", 806, R8A7796_CLK_S0D2), 190 DEF_MOD("vin4", 807, R8A7796_CLK_S0D2), 191 DEF_MOD("vin3", 808, R8A7796_CLK_S0D2), 192 DEF_MOD("vin2", 809, R8A7796_CLK_S0D2), 193 DEF_MOD("vin1", 810, R8A7796_CLK_S0D2), 194 DEF_MOD("vin0", 811, R8A7796_CLK_S0D2), 195 DEF_MOD("etheravb", 812, R8A7796_CLK_S0D6), 196 DEF_MOD("imr1", 822, R8A7796_CLK_S0D2), 197 DEF_MOD("imr0", 823, R8A7796_CLK_S0D2), 198 DEF_MOD("gpio7", 905, R8A7796_CLK_S3D4), 199 DEF_MOD("gpio6", 906, R8A7796_CLK_S3D4), 200 DEF_MOD("gpio5", 907, R8A7796_CLK_S3D4), 201 DEF_MOD("gpio4", 908, R8A7796_CLK_S3D4), 202 DEF_MOD("gpio3", 909, R8A7796_CLK_S3D4), 203 DEF_MOD("gpio2", 910, R8A7796_CLK_S3D4), 204 DEF_MOD("gpio1", 911, R8A7796_CLK_S3D4), 205 DEF_MOD("gpio0", 912, R8A7796_CLK_S3D4), 206 DEF_MOD("can-fd", 914, R8A7796_CLK_S3D2), 207 DEF_MOD("can-if1", 915, R8A7796_CLK_S3D4), 208 DEF_MOD("can-if0", 916, R8A7796_CLK_S3D4), 209 DEF_MOD("i2c6", 918, R8A7796_CLK_S0D6), 210 DEF_MOD("i2c5", 919, R8A7796_CLK_S0D6), 211 DEF_MOD("i2c-dvfs", 926, R8A7796_CLK_CP), 212 DEF_MOD("i2c4", 927, R8A7796_CLK_S0D6), 213 DEF_MOD("i2c3", 928, R8A7796_CLK_S0D6), 214 DEF_MOD("i2c2", 929, R8A7796_CLK_S3D2), 215 DEF_MOD("i2c1", 930, R8A7796_CLK_S3D2), 216 DEF_MOD("i2c0", 931, R8A7796_CLK_S3D2), 217 DEF_MOD("ssi-all", 1005, R8A7796_CLK_S3D4), 218 DEF_MOD("ssi9", 1006, MOD_CLK_ID(1005)), 219 DEF_MOD("ssi8", 1007, MOD_CLK_ID(1005)), 220 DEF_MOD("ssi7", 1008, MOD_CLK_ID(1005)), 221 DEF_MOD("ssi6", 1009, MOD_CLK_ID(1005)), 222 DEF_MOD("ssi5", 1010, MOD_CLK_ID(1005)), 223 DEF_MOD("ssi4", 1011, MOD_CLK_ID(1005)), 224 DEF_MOD("ssi3", 1012, MOD_CLK_ID(1005)), 225 DEF_MOD("ssi2", 1013, MOD_CLK_ID(1005)), 226 DEF_MOD("ssi1", 1014, MOD_CLK_ID(1005)), 227 DEF_MOD("ssi0", 1015, MOD_CLK_ID(1005)), 228 DEF_MOD("scu-all", 1017, R8A7796_CLK_S3D4), 229 DEF_MOD("scu-dvc1", 1018, MOD_CLK_ID(1017)), 230 DEF_MOD("scu-dvc0", 1019, MOD_CLK_ID(1017)), 231 DEF_MOD("scu-ctu1-mix1", 1020, MOD_CLK_ID(1017)), 232 DEF_MOD("scu-ctu0-mix0", 1021, MOD_CLK_ID(1017)), 233 DEF_MOD("scu-src9", 1022, MOD_CLK_ID(1017)), 234 DEF_MOD("scu-src8", 1023, MOD_CLK_ID(1017)), 235 DEF_MOD("scu-src7", 1024, MOD_CLK_ID(1017)), 236 DEF_MOD("scu-src6", 1025, MOD_CLK_ID(1017)), 237 DEF_MOD("scu-src5", 1026, MOD_CLK_ID(1017)), 238 DEF_MOD("scu-src4", 1027, MOD_CLK_ID(1017)), 239 DEF_MOD("scu-src3", 1028, MOD_CLK_ID(1017)), 240 DEF_MOD("scu-src2", 1029, MOD_CLK_ID(1017)), 241 DEF_MOD("scu-src1", 1030, MOD_CLK_ID(1017)), 242 DEF_MOD("scu-src0", 1031, MOD_CLK_ID(1017)), 243 }; 244 245 static const unsigned int r8a7796_crit_mod_clks[] __initconst = { 246 MOD_CLK_ID(408), /* INTC-AP (GIC) */ 247 }; 248 249 250 /* 251 * CPG Clock Data 252 */ 253 254 /* 255 * MD EXTAL PLL0 PLL1 PLL2 PLL3 PLL4 256 * 14 13 19 17 (MHz) 257 *------------------------------------------------------------------- 258 * 0 0 0 0 16.66 x 1 x180 x192 x144 x192 x144 259 * 0 0 0 1 16.66 x 1 x180 x192 x144 x128 x144 260 * 0 0 1 0 Prohibited setting 261 * 0 0 1 1 16.66 x 1 x180 x192 x144 x192 x144 262 * 0 1 0 0 20 x 1 x150 x160 x120 x160 x120 263 * 0 1 0 1 20 x 1 x150 x160 x120 x106 x120 264 * 0 1 1 0 Prohibited setting 265 * 0 1 1 1 20 x 1 x150 x160 x120 x160 x120 266 * 1 0 0 0 25 x 1 x120 x128 x96 x128 x96 267 * 1 0 0 1 25 x 1 x120 x128 x96 x84 x96 268 * 1 0 1 0 Prohibited setting 269 * 1 0 1 1 25 x 1 x120 x128 x96 x128 x96 270 * 1 1 0 0 33.33 / 2 x180 x192 x144 x192 x144 271 * 1 1 0 1 33.33 / 2 x180 x192 x144 x128 x144 272 * 1 1 1 0 Prohibited setting 273 * 1 1 1 1 33.33 / 2 x180 x192 x144 x192 x144 274 */ 275 #define CPG_PLL_CONFIG_INDEX(md) ((((md) & BIT(14)) >> 11) | \ 276 (((md) & BIT(13)) >> 11) | \ 277 (((md) & BIT(19)) >> 18) | \ 278 (((md) & BIT(17)) >> 17)) 279 280 static const struct rcar_gen3_cpg_pll_config cpg_pll_configs[16] __initconst = { 281 /* EXTAL div PLL1 mult/div PLL3 mult/div */ 282 { 1, 192, 1, 192, 1, }, 283 { 1, 192, 1, 128, 1, }, 284 { 0, /* Prohibited setting */ }, 285 { 1, 192, 1, 192, 1, }, 286 { 1, 160, 1, 160, 1, }, 287 { 1, 160, 1, 106, 1, }, 288 { 0, /* Prohibited setting */ }, 289 { 1, 160, 1, 160, 1, }, 290 { 1, 128, 1, 128, 1, }, 291 { 1, 128, 1, 84, 1, }, 292 { 0, /* Prohibited setting */ }, 293 { 1, 128, 1, 128, 1, }, 294 { 2, 192, 1, 192, 1, }, 295 { 2, 192, 1, 128, 1, }, 296 { 0, /* Prohibited setting */ }, 297 { 2, 192, 1, 192, 1, }, 298 }; 299 300 static int __init r8a7796_cpg_mssr_init(struct device *dev) 301 { 302 const struct rcar_gen3_cpg_pll_config *cpg_pll_config; 303 u32 cpg_mode; 304 int error; 305 306 error = rcar_rst_read_mode_pins(&cpg_mode); 307 if (error) 308 return error; 309 310 cpg_pll_config = &cpg_pll_configs[CPG_PLL_CONFIG_INDEX(cpg_mode)]; 311 if (!cpg_pll_config->extal_div) { 312 dev_err(dev, "Prohibited setting (cpg_mode=0x%x)\n", cpg_mode); 313 return -EINVAL; 314 } 315 316 return rcar_gen3_cpg_init(cpg_pll_config, CLK_EXTALR, cpg_mode); 317 } 318 319 const struct cpg_mssr_info r8a7796_cpg_mssr_info __initconst = { 320 /* Core Clocks */ 321 .core_clks = r8a7796_core_clks, 322 .num_core_clks = ARRAY_SIZE(r8a7796_core_clks), 323 .last_dt_core_clk = LAST_DT_CORE_CLK, 324 .num_total_core_clks = MOD_CLK_BASE, 325 326 /* Module Clocks */ 327 .mod_clks = r8a7796_mod_clks, 328 .num_mod_clks = ARRAY_SIZE(r8a7796_mod_clks), 329 .num_hw_mod_clks = 12 * 32, 330 331 /* Critical Module Clocks */ 332 .crit_mod_clks = r8a7796_crit_mod_clks, 333 .num_crit_mod_clks = ARRAY_SIZE(r8a7796_crit_mod_clks), 334 335 /* Callbacks */ 336 .init = r8a7796_cpg_mssr_init, 337 .cpg_clk_register = rcar_gen3_cpg_clk_register, 338 }; 339