1 // SPDX-License-Identifier: GPL-2.0+ 2 /* 3 * Renesas R8A7796 CPG MSSR driver 4 * 5 * Copyright (C) 2017-2018 Marek Vasut <marek.vasut (at) gmail.com> 6 * 7 * Based on the following driver from Linux kernel: 8 * r8a7796 Clock Pulse Generator / Module Standby and Software Reset 9 * 10 * Copyright (C) 2016 Glider bvba 11 */ 12 13 #include <common.h> 14 #include <clk-uclass.h> 15 #include <dm.h> 16 17 #include <dt-bindings/clock/r8a7796-cpg-mssr.h> 18 19 #include "renesas-cpg-mssr.h" 20 #include "rcar-gen3-cpg.h" 21 22 enum clk_ids { 23 /* Core Clock Outputs exported to DT */ 24 LAST_DT_CORE_CLK = R8A7796_CLK_OSC, 25 26 /* External Input Clocks */ 27 CLK_EXTAL, 28 CLK_EXTALR, 29 30 /* Internal Core Clocks */ 31 CLK_MAIN, 32 CLK_PLL0, 33 CLK_PLL1, 34 CLK_PLL2, 35 CLK_PLL3, 36 CLK_PLL4, 37 CLK_PLL1_DIV2, 38 CLK_PLL1_DIV4, 39 CLK_S0, 40 CLK_S1, 41 CLK_S2, 42 CLK_S3, 43 CLK_SDSRC, 44 CLK_RPCSRC, 45 CLK_SSPSRC, 46 CLK_RINT, 47 48 /* Module Clocks */ 49 MOD_CLK_BASE 50 }; 51 52 static const struct cpg_core_clk r8a7796_core_clks[] = { 53 /* External Clock Inputs */ 54 DEF_INPUT("extal", CLK_EXTAL), 55 DEF_INPUT("extalr", CLK_EXTALR), 56 57 /* Internal Core Clocks */ 58 DEF_BASE(".main", CLK_MAIN, CLK_TYPE_GEN3_MAIN, CLK_EXTAL), 59 DEF_BASE(".pll0", CLK_PLL0, CLK_TYPE_GEN3_PLL0, CLK_MAIN), 60 DEF_BASE(".pll1", CLK_PLL1, CLK_TYPE_GEN3_PLL1, CLK_MAIN), 61 DEF_BASE(".pll2", CLK_PLL2, CLK_TYPE_GEN3_PLL2, CLK_MAIN), 62 DEF_BASE(".pll3", CLK_PLL3, CLK_TYPE_GEN3_PLL3, CLK_MAIN), 63 DEF_BASE(".pll4", CLK_PLL4, CLK_TYPE_GEN3_PLL4, CLK_MAIN), 64 65 DEF_FIXED(".pll1_div2", CLK_PLL1_DIV2, CLK_PLL1, 2, 1), 66 DEF_FIXED(".pll1_div4", CLK_PLL1_DIV4, CLK_PLL1_DIV2, 2, 1), 67 DEF_FIXED(".s0", CLK_S0, CLK_PLL1_DIV2, 2, 1), 68 DEF_FIXED(".s1", CLK_S1, CLK_PLL1_DIV2, 3, 1), 69 DEF_FIXED(".s2", CLK_S2, CLK_PLL1_DIV2, 4, 1), 70 DEF_FIXED(".s3", CLK_S3, CLK_PLL1_DIV2, 6, 1), 71 DEF_FIXED(".sdsrc", CLK_SDSRC, CLK_PLL1_DIV2, 2, 1), 72 DEF_FIXED(".rpcsrc", CLK_RPCSRC, CLK_PLL1, 2, 1), 73 74 /* Core Clock Outputs */ 75 DEF_FIXED("ztr", R8A7796_CLK_ZTR, CLK_PLL1_DIV2, 6, 1), 76 DEF_FIXED("ztrd2", R8A7796_CLK_ZTRD2, CLK_PLL1_DIV2, 12, 1), 77 DEF_FIXED("zt", R8A7796_CLK_ZT, CLK_PLL1_DIV2, 4, 1), 78 DEF_FIXED("zx", R8A7796_CLK_ZX, CLK_PLL1_DIV2, 2, 1), 79 DEF_FIXED("s0d1", R8A7796_CLK_S0D1, CLK_S0, 1, 1), 80 DEF_FIXED("s0d2", R8A7796_CLK_S0D2, CLK_S0, 2, 1), 81 DEF_FIXED("s0d3", R8A7796_CLK_S0D3, CLK_S0, 3, 1), 82 DEF_FIXED("s0d4", R8A7796_CLK_S0D4, CLK_S0, 4, 1), 83 DEF_FIXED("s0d6", R8A7796_CLK_S0D6, CLK_S0, 6, 1), 84 DEF_FIXED("s0d8", R8A7796_CLK_S0D8, CLK_S0, 8, 1), 85 DEF_FIXED("s0d12", R8A7796_CLK_S0D12, CLK_S0, 12, 1), 86 DEF_FIXED("s1d1", R8A7796_CLK_S1D1, CLK_S1, 1, 1), 87 DEF_FIXED("s1d2", R8A7796_CLK_S1D2, CLK_S1, 2, 1), 88 DEF_FIXED("s1d4", R8A7796_CLK_S1D4, CLK_S1, 4, 1), 89 DEF_FIXED("s2d1", R8A7796_CLK_S2D1, CLK_S2, 1, 1), 90 DEF_FIXED("s2d2", R8A7796_CLK_S2D2, CLK_S2, 2, 1), 91 DEF_FIXED("s2d4", R8A7796_CLK_S2D4, CLK_S2, 4, 1), 92 DEF_FIXED("s3d1", R8A7796_CLK_S3D1, CLK_S3, 1, 1), 93 DEF_FIXED("s3d2", R8A7796_CLK_S3D2, CLK_S3, 2, 1), 94 DEF_FIXED("s3d4", R8A7796_CLK_S3D4, CLK_S3, 4, 1), 95 96 DEF_GEN3_SD("sd0", R8A7796_CLK_SD0, CLK_SDSRC, 0x074), 97 DEF_GEN3_SD("sd1", R8A7796_CLK_SD1, CLK_SDSRC, 0x078), 98 DEF_GEN3_SD("sd2", R8A7796_CLK_SD2, CLK_SDSRC, 0x268), 99 DEF_GEN3_SD("sd3", R8A7796_CLK_SD3, CLK_SDSRC, 0x26c), 100 101 DEF_GEN3_RPC("rpc", R8A7796_CLK_RPC, CLK_RPCSRC, 0x238), 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 /* NOTE: HDMI, CSI, CAN etc. clock are missing */ 107 108 DEF_BASE("r", R8A7796_CLK_R, CLK_TYPE_GEN3_R, CLK_RINT), 109 }; 110 111 static const struct mssr_mod_clk r8a7796_mod_clks[] = { 112 DEF_MOD("scif5", 202, R8A7796_CLK_S3D4), 113 DEF_MOD("scif4", 203, R8A7796_CLK_S3D4), 114 DEF_MOD("scif3", 204, R8A7796_CLK_S3D4), 115 DEF_MOD("scif1", 206, R8A7796_CLK_S3D4), 116 DEF_MOD("scif0", 207, R8A7796_CLK_S3D4), 117 DEF_MOD("msiof3", 208, R8A7796_CLK_MSO), 118 DEF_MOD("msiof2", 209, R8A7796_CLK_MSO), 119 DEF_MOD("msiof1", 210, R8A7796_CLK_MSO), 120 DEF_MOD("msiof0", 211, R8A7796_CLK_MSO), 121 DEF_MOD("sys-dmac2", 217, R8A7796_CLK_S0D3), 122 DEF_MOD("sys-dmac1", 218, R8A7796_CLK_S0D3), 123 DEF_MOD("sys-dmac0", 219, R8A7796_CLK_S0D3), 124 DEF_MOD("cmt3", 300, R8A7796_CLK_R), 125 DEF_MOD("cmt2", 301, R8A7796_CLK_R), 126 DEF_MOD("cmt1", 302, R8A7796_CLK_R), 127 DEF_MOD("cmt0", 303, R8A7796_CLK_R), 128 DEF_MOD("scif2", 310, R8A7796_CLK_S3D4), 129 DEF_MOD("sdif3", 311, R8A7796_CLK_SD3), 130 DEF_MOD("sdif2", 312, R8A7796_CLK_SD2), 131 DEF_MOD("sdif1", 313, R8A7796_CLK_SD1), 132 DEF_MOD("sdif0", 314, R8A7796_CLK_SD0), 133 DEF_MOD("pcie1", 318, R8A7796_CLK_S3D1), 134 DEF_MOD("pcie0", 319, R8A7796_CLK_S3D1), 135 DEF_MOD("usb3-if0", 328, R8A7796_CLK_S3D1), 136 DEF_MOD("usb-dmac0", 330, R8A7796_CLK_S3D1), 137 DEF_MOD("usb-dmac1", 331, R8A7796_CLK_S3D1), 138 DEF_MOD("rwdt", 402, R8A7796_CLK_R), 139 DEF_MOD("intc-ex", 407, R8A7796_CLK_CP), 140 DEF_MOD("intc-ap", 408, R8A7796_CLK_S3D1), 141 DEF_MOD("audmac1", 501, R8A7796_CLK_S0D3), 142 DEF_MOD("audmac0", 502, R8A7796_CLK_S0D3), 143 DEF_MOD("drif7", 508, R8A7796_CLK_S3D2), 144 DEF_MOD("drif6", 509, R8A7796_CLK_S3D2), 145 DEF_MOD("drif5", 510, R8A7796_CLK_S3D2), 146 DEF_MOD("drif4", 511, R8A7796_CLK_S3D2), 147 DEF_MOD("drif3", 512, R8A7796_CLK_S3D2), 148 DEF_MOD("drif2", 513, R8A7796_CLK_S3D2), 149 DEF_MOD("drif1", 514, R8A7796_CLK_S3D2), 150 DEF_MOD("drif0", 515, R8A7796_CLK_S3D2), 151 DEF_MOD("hscif4", 516, R8A7796_CLK_S3D1), 152 DEF_MOD("hscif3", 517, R8A7796_CLK_S3D1), 153 DEF_MOD("hscif2", 518, R8A7796_CLK_S3D1), 154 DEF_MOD("hscif1", 519, R8A7796_CLK_S3D1), 155 DEF_MOD("hscif0", 520, R8A7796_CLK_S3D1), 156 DEF_MOD("thermal", 522, R8A7796_CLK_CP), 157 DEF_MOD("pwm", 523, R8A7796_CLK_S0D12), 158 DEF_MOD("fcpvd2", 601, R8A7796_CLK_S0D2), 159 DEF_MOD("fcpvd1", 602, R8A7796_CLK_S0D2), 160 DEF_MOD("fcpvd0", 603, R8A7796_CLK_S0D2), 161 DEF_MOD("fcpvb0", 607, R8A7796_CLK_S0D1), 162 DEF_MOD("fcpvi0", 611, R8A7796_CLK_S0D1), 163 DEF_MOD("fcpf0", 615, R8A7796_CLK_S0D1), 164 DEF_MOD("fcpci0", 617, R8A7796_CLK_S0D2), 165 DEF_MOD("fcpcs", 619, R8A7796_CLK_S0D2), 166 DEF_MOD("vspd2", 621, R8A7796_CLK_S0D2), 167 DEF_MOD("vspd1", 622, R8A7796_CLK_S0D2), 168 DEF_MOD("vspd0", 623, R8A7796_CLK_S0D2), 169 DEF_MOD("vspb", 626, R8A7796_CLK_S0D1), 170 DEF_MOD("vspi0", 631, R8A7796_CLK_S0D1), 171 DEF_MOD("ehci1", 702, R8A7796_CLK_S3D4), 172 DEF_MOD("ehci0", 703, R8A7796_CLK_S3D4), 173 DEF_MOD("hsusb", 704, R8A7796_CLK_S3D4), 174 DEF_MOD("csi20", 714, R8A7796_CLK_CSI0), 175 DEF_MOD("csi40", 716, R8A7796_CLK_CSI0), 176 DEF_MOD("du2", 722, R8A7796_CLK_S2D1), 177 DEF_MOD("du1", 723, R8A7796_CLK_S2D1), 178 DEF_MOD("du0", 724, R8A7796_CLK_S2D1), 179 DEF_MOD("lvds", 727, R8A7796_CLK_S2D1), 180 DEF_MOD("hdmi0", 729, R8A7796_CLK_HDMI), 181 DEF_MOD("vin7", 804, R8A7796_CLK_S0D2), 182 DEF_MOD("vin6", 805, R8A7796_CLK_S0D2), 183 DEF_MOD("vin5", 806, R8A7796_CLK_S0D2), 184 DEF_MOD("vin4", 807, R8A7796_CLK_S0D2), 185 DEF_MOD("vin3", 808, R8A7796_CLK_S0D2), 186 DEF_MOD("vin2", 809, R8A7796_CLK_S0D2), 187 DEF_MOD("vin1", 810, R8A7796_CLK_S0D2), 188 DEF_MOD("vin0", 811, R8A7796_CLK_S0D2), 189 DEF_MOD("etheravb", 812, R8A7796_CLK_S0D6), 190 DEF_MOD("imr1", 822, R8A7796_CLK_S0D2), 191 DEF_MOD("imr0", 823, R8A7796_CLK_S0D2), 192 DEF_MOD("gpio7", 905, R8A7796_CLK_S3D4), 193 DEF_MOD("gpio6", 906, R8A7796_CLK_S3D4), 194 DEF_MOD("gpio5", 907, R8A7796_CLK_S3D4), 195 DEF_MOD("gpio4", 908, R8A7796_CLK_S3D4), 196 DEF_MOD("gpio3", 909, R8A7796_CLK_S3D4), 197 DEF_MOD("gpio2", 910, R8A7796_CLK_S3D4), 198 DEF_MOD("gpio1", 911, R8A7796_CLK_S3D4), 199 DEF_MOD("gpio0", 912, R8A7796_CLK_S3D4), 200 DEF_MOD("can-fd", 914, R8A7796_CLK_S3D2), 201 DEF_MOD("can-if1", 915, R8A7796_CLK_S3D4), 202 DEF_MOD("can-if0", 916, R8A7796_CLK_S3D4), 203 DEF_MOD("rpc", 917, R8A7796_CLK_RPC), 204 DEF_MOD("i2c6", 918, R8A7796_CLK_S0D6), 205 DEF_MOD("i2c5", 919, R8A7796_CLK_S0D6), 206 DEF_MOD("i2c-dvfs", 926, R8A7796_CLK_CP), 207 DEF_MOD("i2c4", 927, R8A7796_CLK_S0D6), 208 DEF_MOD("i2c3", 928, R8A7796_CLK_S0D6), 209 DEF_MOD("i2c2", 929, R8A7796_CLK_S3D2), 210 DEF_MOD("i2c1", 930, R8A7796_CLK_S3D2), 211 DEF_MOD("i2c0", 931, R8A7796_CLK_S3D2), 212 DEF_MOD("ssi-all", 1005, R8A7796_CLK_S3D4), 213 DEF_MOD("ssi9", 1006, MOD_CLK_ID(1005)), 214 DEF_MOD("ssi8", 1007, MOD_CLK_ID(1005)), 215 DEF_MOD("ssi7", 1008, MOD_CLK_ID(1005)), 216 DEF_MOD("ssi6", 1009, MOD_CLK_ID(1005)), 217 DEF_MOD("ssi5", 1010, MOD_CLK_ID(1005)), 218 DEF_MOD("ssi4", 1011, MOD_CLK_ID(1005)), 219 DEF_MOD("ssi3", 1012, MOD_CLK_ID(1005)), 220 DEF_MOD("ssi2", 1013, MOD_CLK_ID(1005)), 221 DEF_MOD("ssi1", 1014, MOD_CLK_ID(1005)), 222 DEF_MOD("ssi0", 1015, MOD_CLK_ID(1005)), 223 DEF_MOD("scu-all", 1017, R8A7796_CLK_S3D4), 224 DEF_MOD("scu-dvc1", 1018, MOD_CLK_ID(1017)), 225 DEF_MOD("scu-dvc0", 1019, MOD_CLK_ID(1017)), 226 DEF_MOD("scu-ctu1-mix1", 1020, MOD_CLK_ID(1017)), 227 DEF_MOD("scu-ctu0-mix0", 1021, MOD_CLK_ID(1017)), 228 DEF_MOD("scu-src9", 1022, MOD_CLK_ID(1017)), 229 DEF_MOD("scu-src8", 1023, MOD_CLK_ID(1017)), 230 DEF_MOD("scu-src7", 1024, MOD_CLK_ID(1017)), 231 DEF_MOD("scu-src6", 1025, MOD_CLK_ID(1017)), 232 DEF_MOD("scu-src5", 1026, MOD_CLK_ID(1017)), 233 DEF_MOD("scu-src4", 1027, MOD_CLK_ID(1017)), 234 DEF_MOD("scu-src3", 1028, MOD_CLK_ID(1017)), 235 DEF_MOD("scu-src2", 1029, MOD_CLK_ID(1017)), 236 DEF_MOD("scu-src1", 1030, MOD_CLK_ID(1017)), 237 DEF_MOD("scu-src0", 1031, MOD_CLK_ID(1017)), 238 }; 239 240 /* 241 * CPG Clock Data 242 */ 243 244 /* 245 * MD EXTAL PLL0 PLL1 PLL2 PLL3 PLL4 246 * 14 13 19 17 (MHz) 247 *------------------------------------------------------------------- 248 * 0 0 0 0 16.66 x 1 x180 x192 x144 x192 x144 249 * 0 0 0 1 16.66 x 1 x180 x192 x144 x128 x144 250 * 0 0 1 0 Prohibited setting 251 * 0 0 1 1 16.66 x 1 x180 x192 x144 x192 x144 252 * 0 1 0 0 20 x 1 x150 x160 x120 x160 x120 253 * 0 1 0 1 20 x 1 x150 x160 x120 x106 x120 254 * 0 1 1 0 Prohibited setting 255 * 0 1 1 1 20 x 1 x150 x160 x120 x160 x120 256 * 1 0 0 0 25 x 1 x120 x128 x96 x128 x96 257 * 1 0 0 1 25 x 1 x120 x128 x96 x84 x96 258 * 1 0 1 0 Prohibited setting 259 * 1 0 1 1 25 x 1 x120 x128 x96 x128 x96 260 * 1 1 0 0 33.33 / 2 x180 x192 x144 x192 x144 261 * 1 1 0 1 33.33 / 2 x180 x192 x144 x128 x144 262 * 1 1 1 0 Prohibited setting 263 * 1 1 1 1 33.33 / 2 x180 x192 x144 x192 x144 264 */ 265 #define CPG_PLL_CONFIG_INDEX(md) ((((md) & BIT(14)) >> 11) | \ 266 (((md) & BIT(13)) >> 11) | \ 267 (((md) & BIT(19)) >> 18) | \ 268 (((md) & BIT(17)) >> 17)) 269 270 static const struct rcar_gen3_cpg_pll_config cpg_pll_configs[16] = { 271 /* EXTAL div PLL1 mult/div PLL3 mult/div */ 272 { 1, 192, 1, 192, 1, }, 273 { 1, 192, 1, 128, 1, }, 274 { 0, /* Prohibited setting */ }, 275 { 1, 192, 1, 192, 1, }, 276 { 1, 160, 1, 160, 1, }, 277 { 1, 160, 1, 106, 1, }, 278 { 0, /* Prohibited setting */ }, 279 { 1, 160, 1, 160, 1, }, 280 { 1, 128, 1, 128, 1, }, 281 { 1, 128, 1, 84, 1, }, 282 { 0, /* Prohibited setting */ }, 283 { 1, 128, 1, 128, 1, }, 284 { 2, 192, 1, 192, 1, }, 285 { 2, 192, 1, 128, 1, }, 286 { 0, /* Prohibited setting */ }, 287 { 2, 192, 1, 192, 1, }, 288 }; 289 290 static const struct mstp_stop_table r8a7796_mstp_table[] = { 291 { 0x00200000, 0x0, 0x00200000, 0 }, 292 { 0xFFFFFFFF, 0x0, 0xFFFFFFFF, 0 }, 293 { 0x340E2FDC, 0x2040, 0x340E2FDC, 0 }, 294 { 0xFFFFFFDF, 0x400, 0xFFFFFFDF, 0 }, 295 { 0x80000184, 0x180, 0x80000184, 0 }, 296 { 0xC3FFFFFF, 0x0, 0xC3FFFFFF, 0 }, 297 { 0xFFFFFFFF, 0x0, 0xFFFFFFFF, 0 }, 298 { 0xFFFFFFFF, 0x0, 0xFFFFFFFF, 0 }, 299 { 0x01F1FFF7, 0x0, 0x01F1FFF7, 0 }, 300 { 0xFFFFFFFE, 0x0, 0xFFFFFFFE, 0 }, 301 { 0xFFFEFFE0, 0x0, 0xFFFEFFE0, 0 }, 302 { 0x000000B7, 0x0, 0x000000B7, 0 }, 303 }; 304 305 static const void *r8a7796_get_pll_config(const u32 cpg_mode) 306 { 307 return &cpg_pll_configs[CPG_PLL_CONFIG_INDEX(cpg_mode)]; 308 } 309 310 static const struct cpg_mssr_info r8a7796_cpg_mssr_info = { 311 .core_clk = r8a7796_core_clks, 312 .core_clk_size = ARRAY_SIZE(r8a7796_core_clks), 313 .mod_clk = r8a7796_mod_clks, 314 .mod_clk_size = ARRAY_SIZE(r8a7796_mod_clks), 315 .mstp_table = r8a7796_mstp_table, 316 .mstp_table_size = ARRAY_SIZE(r8a7796_mstp_table), 317 .reset_node = "renesas,r8a7796-rst", 318 .extalr_node = "extalr", 319 .mod_clk_base = MOD_CLK_BASE, 320 .clk_extal_id = CLK_EXTAL, 321 .clk_extalr_id = CLK_EXTALR, 322 .get_pll_config = r8a7796_get_pll_config, 323 }; 324 325 static const struct cpg_mssr_info r8a77965_cpg_mssr_info = { 326 .core_clk = r8a7796_core_clks, 327 .core_clk_size = ARRAY_SIZE(r8a7796_core_clks), 328 .mod_clk = r8a7796_mod_clks, 329 .mod_clk_size = ARRAY_SIZE(r8a7796_mod_clks), 330 .mstp_table = r8a7796_mstp_table, 331 .mstp_table_size = ARRAY_SIZE(r8a7796_mstp_table), 332 .reset_node = "renesas,r8a77965-rst", 333 .extalr_node = "extalr", 334 .mod_clk_base = MOD_CLK_BASE, 335 .clk_extal_id = CLK_EXTAL, 336 .clk_extalr_id = CLK_EXTALR, 337 .get_pll_config = r8a7796_get_pll_config, 338 }; 339 340 static const struct udevice_id r8a7796_clk_ids[] = { 341 { 342 .compatible = "renesas,r8a7796-cpg-mssr", 343 .data = (ulong)&r8a7796_cpg_mssr_info, 344 }, 345 { 346 .compatible = "renesas,r8a77965-cpg-mssr", 347 .data = (ulong)&r8a77965_cpg_mssr_info, 348 }, 349 { } 350 }; 351 352 U_BOOT_DRIVER(clk_r8a7796) = { 353 .name = "clk_r8a7796", 354 .id = UCLASS_CLK, 355 .of_match = r8a7796_clk_ids, 356 .priv_auto_alloc_size = sizeof(struct gen3_clk_priv), 357 .ops = &gen3_clk_ops, 358 .probe = gen3_clk_probe, 359 .remove = gen3_clk_remove, 360 }; 361
