1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * r8a77995 Clock Pulse Generator / Module Standby and Software Reset 4 * 5 * Copyright (C) 2017 Glider bvba 6 * 7 * Based on r8a7795-cpg-mssr.c 8 * 9 * Copyright (C) 2015 Glider bvba 10 * Copyright (C) 2015 Renesas Electronics Corp. 11 */ 12 13 #include <linux/device.h> 14 #include <linux/init.h> 15 #include <linux/kernel.h> 16 #include <linux/soc/renesas/rcar-rst.h> 17 18 #include <dt-bindings/clock/r8a77995-cpg-mssr.h> 19 20 #include "renesas-cpg-mssr.h" 21 #include "rcar-gen3-cpg.h" 22 23 enum clk_ids { 24 /* Core Clock Outputs exported to DT */ 25 LAST_DT_CORE_CLK = R8A77995_CLK_CPEX, 26 27 /* External Input Clocks */ 28 CLK_EXTAL, 29 30 /* Internal Core Clocks */ 31 CLK_MAIN, 32 CLK_PLL0, 33 CLK_PLL1, 34 CLK_PLL3, 35 CLK_PLL0D2, 36 CLK_PLL0D3, 37 CLK_PLL0D5, 38 CLK_PLL1D2, 39 CLK_PE, 40 CLK_S0, 41 CLK_S1, 42 CLK_S2, 43 CLK_S3, 44 CLK_SDSRC, 45 CLK_RINT, 46 CLK_OCO, 47 48 /* Module Clocks */ 49 MOD_CLK_BASE 50 }; 51 52 static const struct cpg_core_clk r8a77995_core_clks[] __initconst = { 53 /* External Clock Inputs */ 54 DEF_INPUT("extal", CLK_EXTAL), 55 56 /* Internal Core Clocks */ 57 DEF_BASE(".main", CLK_MAIN, CLK_TYPE_GEN3_MAIN, CLK_EXTAL), 58 DEF_BASE(".pll1", CLK_PLL1, CLK_TYPE_GEN3_PLL1, CLK_MAIN), 59 DEF_BASE(".pll3", CLK_PLL3, CLK_TYPE_GEN3_PLL3, CLK_MAIN), 60 61 DEF_FIXED(".pll0", CLK_PLL0, CLK_MAIN, 4, 250), 62 DEF_FIXED(".pll0d2", CLK_PLL0D2, CLK_PLL0, 2, 1), 63 DEF_FIXED(".pll0d3", CLK_PLL0D3, CLK_PLL0, 3, 1), 64 DEF_FIXED(".pll0d5", CLK_PLL0D5, CLK_PLL0, 5, 1), 65 DEF_FIXED(".pll1d2", CLK_PLL1D2, CLK_PLL1, 2, 1), 66 DEF_FIXED(".pe", CLK_PE, CLK_PLL0D3, 4, 1), 67 DEF_FIXED(".s0", CLK_S0, CLK_PLL1, 2, 1), 68 DEF_FIXED(".s1", CLK_S1, CLK_PLL1, 3, 1), 69 DEF_FIXED(".s2", CLK_S2, CLK_PLL1, 4, 1), 70 DEF_FIXED(".s3", CLK_S3, CLK_PLL1, 6, 1), 71 DEF_FIXED(".sdsrc", CLK_SDSRC, CLK_PLL1, 2, 1), 72 73 DEF_DIV6_RO(".r", CLK_RINT, CLK_EXTAL, CPG_RCKCR, 32), 74 75 DEF_RATE(".oco", CLK_OCO, 8 * 1000 * 1000), 76 77 /* Core Clock Outputs */ 78 DEF_FIXED("z2", R8A77995_CLK_Z2, CLK_PLL0D3, 1, 1), 79 DEF_FIXED("ztr", R8A77995_CLK_ZTR, CLK_PLL1, 6, 1), 80 DEF_FIXED("zt", R8A77995_CLK_ZT, CLK_PLL1, 4, 1), 81 DEF_FIXED("zx", R8A77995_CLK_ZX, CLK_PLL1, 3, 1), 82 DEF_FIXED("s0d1", R8A77995_CLK_S0D1, CLK_S0, 1, 1), 83 DEF_FIXED("s1d1", R8A77995_CLK_S1D1, CLK_S1, 1, 1), 84 DEF_FIXED("s1d2", R8A77995_CLK_S1D2, CLK_S1, 2, 1), 85 DEF_FIXED("s1d4", R8A77995_CLK_S1D4, CLK_S1, 4, 1), 86 DEF_FIXED("s2d1", R8A77995_CLK_S2D1, CLK_S2, 1, 1), 87 DEF_FIXED("s2d2", R8A77995_CLK_S2D2, CLK_S2, 2, 1), 88 DEF_FIXED("s2d4", R8A77995_CLK_S2D4, CLK_S2, 4, 1), 89 DEF_FIXED("s3d1", R8A77995_CLK_S3D1, CLK_S3, 1, 1), 90 DEF_FIXED("s3d2", R8A77995_CLK_S3D2, CLK_S3, 2, 1), 91 DEF_FIXED("s3d4", R8A77995_CLK_S3D4, CLK_S3, 4, 1), 92 93 DEF_FIXED("cl", R8A77995_CLK_CL, CLK_PLL1, 48, 1), 94 DEF_FIXED("cr", R8A77995_CLK_CR, CLK_PLL1D2, 2, 1), 95 DEF_FIXED("cp", R8A77995_CLK_CP, CLK_EXTAL, 2, 1), 96 DEF_FIXED("cpex", R8A77995_CLK_CPEX, CLK_EXTAL, 4, 1), 97 98 DEF_DIV6_RO("osc", R8A77995_CLK_OSC, CLK_EXTAL, CPG_RCKCR, 8), 99 100 DEF_GEN3_PE("s1d4c", R8A77995_CLK_S1D4C, CLK_S1, 4, CLK_PE, 2), 101 DEF_GEN3_PE("s3d1c", R8A77995_CLK_S3D1C, CLK_S3, 1, CLK_PE, 1), 102 DEF_GEN3_PE("s3d2c", R8A77995_CLK_S3D2C, CLK_S3, 2, CLK_PE, 2), 103 DEF_GEN3_PE("s3d4c", R8A77995_CLK_S3D4C, CLK_S3, 4, CLK_PE, 4), 104 105 DEF_GEN3_SD("sd0", R8A77995_CLK_SD0, CLK_SDSRC, 0x268), 106 107 DEF_DIV6P1("canfd", R8A77995_CLK_CANFD, CLK_PLL0D3, 0x244), 108 DEF_DIV6P1("mso", R8A77995_CLK_MSO, CLK_PLL1D2, 0x014), 109 110 DEF_GEN3_RCKSEL("r", R8A77995_CLK_R, CLK_RINT, 1, CLK_OCO, 61 * 4), 111 }; 112 113 static const struct mssr_mod_clk r8a77995_mod_clks[] __initconst = { 114 DEF_MOD("scif5", 202, R8A77995_CLK_S3D4C), 115 DEF_MOD("scif4", 203, R8A77995_CLK_S3D4C), 116 DEF_MOD("scif3", 204, R8A77995_CLK_S3D4C), 117 DEF_MOD("scif1", 206, R8A77995_CLK_S3D4C), 118 DEF_MOD("scif0", 207, R8A77995_CLK_S3D4C), 119 DEF_MOD("msiof3", 208, R8A77995_CLK_MSO), 120 DEF_MOD("msiof2", 209, R8A77995_CLK_MSO), 121 DEF_MOD("msiof1", 210, R8A77995_CLK_MSO), 122 DEF_MOD("msiof0", 211, R8A77995_CLK_MSO), 123 DEF_MOD("sys-dmac2", 217, R8A77995_CLK_S3D1), 124 DEF_MOD("sys-dmac1", 218, R8A77995_CLK_S3D1), 125 DEF_MOD("sys-dmac0", 219, R8A77995_CLK_S3D1), 126 DEF_MOD("sceg-pub", 229, R8A77995_CLK_CR), 127 DEF_MOD("cmt3", 300, R8A77995_CLK_R), 128 DEF_MOD("cmt2", 301, R8A77995_CLK_R), 129 DEF_MOD("cmt1", 302, R8A77995_CLK_R), 130 DEF_MOD("cmt0", 303, R8A77995_CLK_R), 131 DEF_MOD("scif2", 310, R8A77995_CLK_S3D4C), 132 DEF_MOD("emmc0", 312, R8A77995_CLK_SD0), 133 DEF_MOD("usb-dmac0", 330, R8A77995_CLK_S3D1), 134 DEF_MOD("usb-dmac1", 331, R8A77995_CLK_S3D1), 135 DEF_MOD("rwdt", 402, R8A77995_CLK_R), 136 DEF_MOD("intc-ex", 407, R8A77995_CLK_CP), 137 DEF_MOD("intc-ap", 408, R8A77995_CLK_S1D2), 138 DEF_MOD("audmac0", 502, R8A77995_CLK_S1D2), 139 DEF_MOD("hscif3", 517, R8A77995_CLK_S3D1C), 140 DEF_MOD("hscif0", 520, R8A77995_CLK_S3D1C), 141 DEF_MOD("thermal", 522, R8A77995_CLK_CP), 142 DEF_MOD("pwm", 523, R8A77995_CLK_S3D4C), 143 DEF_MOD("fcpvd1", 602, R8A77995_CLK_S1D2), 144 DEF_MOD("fcpvd0", 603, R8A77995_CLK_S1D2), 145 DEF_MOD("fcpvbs", 607, R8A77995_CLK_S0D1), 146 DEF_MOD("vspd1", 622, R8A77995_CLK_S1D2), 147 DEF_MOD("vspd0", 623, R8A77995_CLK_S1D2), 148 DEF_MOD("vspbs", 627, R8A77995_CLK_S0D1), 149 DEF_MOD("ehci0", 703, R8A77995_CLK_S3D2), 150 DEF_MOD("hsusb", 704, R8A77995_CLK_S3D2), 151 DEF_MOD("cmm1", 710, R8A77995_CLK_S1D1), 152 DEF_MOD("cmm0", 711, R8A77995_CLK_S1D1), 153 DEF_MOD("du1", 723, R8A77995_CLK_S1D1), 154 DEF_MOD("du0", 724, R8A77995_CLK_S1D1), 155 DEF_MOD("lvds", 727, R8A77995_CLK_S2D1), 156 DEF_MOD("vin4", 807, R8A77995_CLK_S1D2), 157 DEF_MOD("etheravb", 812, R8A77995_CLK_S3D2), 158 DEF_MOD("imr0", 823, R8A77995_CLK_S1D2), 159 DEF_MOD("gpio6", 906, R8A77995_CLK_S3D4), 160 DEF_MOD("gpio5", 907, R8A77995_CLK_S3D4), 161 DEF_MOD("gpio4", 908, R8A77995_CLK_S3D4), 162 DEF_MOD("gpio3", 909, R8A77995_CLK_S3D4), 163 DEF_MOD("gpio2", 910, R8A77995_CLK_S3D4), 164 DEF_MOD("gpio1", 911, R8A77995_CLK_S3D4), 165 DEF_MOD("gpio0", 912, R8A77995_CLK_S3D4), 166 DEF_MOD("can-fd", 914, R8A77995_CLK_S3D2), 167 DEF_MOD("can-if1", 915, R8A77995_CLK_S3D4), 168 DEF_MOD("can-if0", 916, R8A77995_CLK_S3D4), 169 DEF_MOD("i2c3", 928, R8A77995_CLK_S3D2), 170 DEF_MOD("i2c2", 929, R8A77995_CLK_S3D2), 171 DEF_MOD("i2c1", 930, R8A77995_CLK_S3D2), 172 DEF_MOD("i2c0", 931, R8A77995_CLK_S3D2), 173 DEF_MOD("ssi-all", 1005, R8A77995_CLK_S3D4), 174 DEF_MOD("ssi4", 1011, MOD_CLK_ID(1005)), 175 DEF_MOD("ssi3", 1012, MOD_CLK_ID(1005)), 176 DEF_MOD("scu-all", 1017, R8A77995_CLK_S3D4), 177 DEF_MOD("scu-dvc1", 1018, MOD_CLK_ID(1017)), 178 DEF_MOD("scu-dvc0", 1019, MOD_CLK_ID(1017)), 179 DEF_MOD("scu-ctu1-mix1", 1020, MOD_CLK_ID(1017)), 180 DEF_MOD("scu-ctu0-mix0", 1021, MOD_CLK_ID(1017)), 181 DEF_MOD("scu-src6", 1025, MOD_CLK_ID(1017)), 182 DEF_MOD("scu-src5", 1026, MOD_CLK_ID(1017)), 183 }; 184 185 static const unsigned int r8a77995_crit_mod_clks[] __initconst = { 186 MOD_CLK_ID(408), /* INTC-AP (GIC) */ 187 }; 188 189 190 /* 191 * CPG Clock Data 192 */ 193 194 /* 195 * MD19 EXTAL (MHz) PLL0 PLL1 PLL3 196 *-------------------------------------------------------------------- 197 * 0 48 x 1 x250/4 x100/3 x100/3 198 * 1 48 x 1 x250/4 x100/3 x58/3 199 */ 200 #define CPG_PLL_CONFIG_INDEX(md) (((md) & BIT(19)) >> 19) 201 202 static const struct rcar_gen3_cpg_pll_config cpg_pll_configs[2] __initconst = { 203 /* EXTAL div PLL1 mult/div PLL3 mult/div */ 204 { 1, 100, 3, 100, 3, }, 205 { 1, 100, 3, 58, 3, }, 206 }; 207 208 static int __init r8a77995_cpg_mssr_init(struct device *dev) 209 { 210 const struct rcar_gen3_cpg_pll_config *cpg_pll_config; 211 u32 cpg_mode; 212 int error; 213 214 error = rcar_rst_read_mode_pins(&cpg_mode); 215 if (error) 216 return error; 217 218 cpg_pll_config = &cpg_pll_configs[CPG_PLL_CONFIG_INDEX(cpg_mode)]; 219 220 return rcar_gen3_cpg_init(cpg_pll_config, 0, cpg_mode); 221 } 222 223 const struct cpg_mssr_info r8a77995_cpg_mssr_info __initconst = { 224 /* Core Clocks */ 225 .core_clks = r8a77995_core_clks, 226 .num_core_clks = ARRAY_SIZE(r8a77995_core_clks), 227 .last_dt_core_clk = LAST_DT_CORE_CLK, 228 .num_total_core_clks = MOD_CLK_BASE, 229 230 /* Module Clocks */ 231 .mod_clks = r8a77995_mod_clks, 232 .num_mod_clks = ARRAY_SIZE(r8a77995_mod_clks), 233 .num_hw_mod_clks = 12 * 32, 234 235 /* Critical Module Clocks */ 236 .crit_mod_clks = r8a77995_crit_mod_clks, 237 .num_crit_mod_clks = ARRAY_SIZE(r8a77995_crit_mod_clks), 238 239 /* Callbacks */ 240 .init = r8a77995_cpg_mssr_init, 241 .cpg_clk_register = rcar_gen3_cpg_clk_register, 242 }; 243