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 23enum 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_RPCSRC, 46 CLK_RINT, 47 CLK_OCO, 48 49 /* Module Clocks */ 50 MOD_CLK_BASE 51}; 52 53static const struct cpg_core_clk r8a77995_core_clks[] __initconst = { 54 /* External Clock Inputs */ 55 DEF_INPUT("extal", CLK_EXTAL), 56 57 /* Internal Core Clocks */ 58 DEF_BASE(".main", CLK_MAIN, CLK_TYPE_GEN3_MAIN, CLK_EXTAL), 59 DEF_BASE(".pll1", CLK_PLL1, CLK_TYPE_GEN3_PLL1, CLK_MAIN), 60 DEF_BASE(".pll3", CLK_PLL3, CLK_TYPE_GEN3_PLL3, CLK_MAIN), 61 62 DEF_FIXED(".pll0", CLK_PLL0, CLK_MAIN, 4, 250), 63 DEF_FIXED(".pll0d2", CLK_PLL0D2, CLK_PLL0, 2, 1), 64 DEF_FIXED(".pll0d3", CLK_PLL0D3, CLK_PLL0, 3, 1), 65 DEF_FIXED(".pll0d5", CLK_PLL0D5, CLK_PLL0, 5, 1), 66 DEF_FIXED(".pll1d2", CLK_PLL1D2, CLK_PLL1, 2, 1), 67 DEF_FIXED(".pe", CLK_PE, CLK_PLL0D3, 4, 1), 68 DEF_FIXED(".s0", CLK_S0, CLK_PLL1, 2, 1), 69 DEF_FIXED(".s1", CLK_S1, CLK_PLL1, 3, 1), 70 DEF_FIXED(".s2", CLK_S2, CLK_PLL1, 4, 1), 71 DEF_FIXED(".s3", CLK_S3, CLK_PLL1, 6, 1), 72 DEF_FIXED(".sdsrc", CLK_SDSRC, CLK_PLL1, 2, 1), 73 74 DEF_FIXED_RPCSRC_D3(".rpcsrc", CLK_RPCSRC, CLK_PLL0, CLK_PLL1), 75 76 DEF_DIV6_RO(".r", CLK_RINT, CLK_EXTAL, CPG_RCKCR, 32), 77 78 DEF_RATE(".oco", CLK_OCO, 8 * 1000 * 1000), 79 80 /* Core Clock Outputs */ 81 DEF_FIXED("za2", R8A77995_CLK_ZA2, CLK_PLL0D3, 2, 1), 82 DEF_FIXED("z2", R8A77995_CLK_Z2, CLK_PLL0D3, 1, 1), 83 DEF_FIXED("ztr", R8A77995_CLK_ZTR, CLK_PLL1, 6, 1), 84 DEF_FIXED("zt", R8A77995_CLK_ZT, CLK_PLL1, 4, 1), 85 DEF_FIXED("zx", R8A77995_CLK_ZX, CLK_PLL1, 3, 1), 86 DEF_FIXED("s0d1", R8A77995_CLK_S0D1, CLK_S0, 1, 1), 87 DEF_FIXED("s1d1", R8A77995_CLK_S1D1, CLK_S1, 1, 1), 88 DEF_FIXED("s1d2", R8A77995_CLK_S1D2, CLK_S1, 2, 1), 89 DEF_FIXED("s1d4", R8A77995_CLK_S1D4, CLK_S1, 4, 1), 90 DEF_FIXED("s2d1", R8A77995_CLK_S2D1, CLK_S2, 1, 1), 91 DEF_FIXED("s2d2", R8A77995_CLK_S2D2, CLK_S2, 2, 1), 92 DEF_FIXED("s2d4", R8A77995_CLK_S2D4, CLK_S2, 4, 1), 93 DEF_FIXED("s3d1", R8A77995_CLK_S3D1, CLK_S3, 1, 1), 94 DEF_FIXED("s3d2", R8A77995_CLK_S3D2, CLK_S3, 2, 1), 95 DEF_FIXED("s3d4", R8A77995_CLK_S3D4, CLK_S3, 4, 1), 96 97 DEF_FIXED("cl", R8A77995_CLK_CL, CLK_PLL1, 48, 1), 98 DEF_FIXED("cr", R8A77995_CLK_CR, CLK_PLL1D2, 2, 1), 99 DEF_FIXED("cp", R8A77995_CLK_CP, CLK_EXTAL, 2, 1), 100 DEF_FIXED("cpex", R8A77995_CLK_CPEX, CLK_EXTAL, 4, 1), 101 102 DEF_DIV6_RO("osc", R8A77995_CLK_OSC, CLK_EXTAL, CPG_RCKCR, 8), 103 104 DEF_GEN3_PE("s1d4c", R8A77995_CLK_S1D4C, CLK_S1, 4, CLK_PE, 2), 105 DEF_GEN3_PE("s3d1c", R8A77995_CLK_S3D1C, CLK_S3, 1, CLK_PE, 1), 106 DEF_GEN3_PE("s3d2c", R8A77995_CLK_S3D2C, CLK_S3, 2, CLK_PE, 2), 107 DEF_GEN3_PE("s3d4c", R8A77995_CLK_S3D4C, CLK_S3, 4, CLK_PE, 4), 108 109 DEF_GEN3_SDH("sd0h", R8A77995_CLK_SD0H, CLK_SDSRC, 0x268), 110 DEF_GEN3_SD("sd0", R8A77995_CLK_SD0, R8A77995_CLK_SD0H, 0x268), 111 112 DEF_BASE("rpc", R8A77995_CLK_RPC, CLK_TYPE_GEN3_RPC, CLK_RPCSRC), 113 DEF_BASE("rpcd2", R8A77995_CLK_RPCD2, CLK_TYPE_GEN3_RPCD2, R8A77995_CLK_RPC), 114 115 DEF_DIV6P1("canfd", R8A77995_CLK_CANFD, CLK_PLL0D3, 0x244), 116 DEF_DIV6P1("mso", R8A77995_CLK_MSO, CLK_PLL1D2, 0x014), 117 118 DEF_GEN3_RCKSEL("r", R8A77995_CLK_R, CLK_RINT, 1, CLK_OCO, 61 * 4), 119}; 120 121static const struct mssr_mod_clk r8a77995_mod_clks[] __initconst = { 122 DEF_MOD("tmu4", 121, R8A77995_CLK_S1D4C), 123 DEF_MOD("tmu3", 122, R8A77995_CLK_S3D2C), 124 DEF_MOD("tmu2", 123, R8A77995_CLK_S3D2C), 125 DEF_MOD("tmu1", 124, R8A77995_CLK_S3D2C), 126 DEF_MOD("tmu0", 125, R8A77995_CLK_CP), 127 DEF_MOD("scif5", 202, R8A77995_CLK_S3D4C), 128 DEF_MOD("scif4", 203, R8A77995_CLK_S3D4C), 129 DEF_MOD("scif3", 204, R8A77995_CLK_S3D4C), 130 DEF_MOD("scif1", 206, R8A77995_CLK_S3D4C), 131 DEF_MOD("scif0", 207, R8A77995_CLK_S3D4C), 132 DEF_MOD("msiof3", 208, R8A77995_CLK_MSO), 133 DEF_MOD("msiof2", 209, R8A77995_CLK_MSO), 134 DEF_MOD("msiof1", 210, R8A77995_CLK_MSO), 135 DEF_MOD("msiof0", 211, R8A77995_CLK_MSO), 136 DEF_MOD("sys-dmac2", 217, R8A77995_CLK_S3D1), 137 DEF_MOD("sys-dmac1", 218, R8A77995_CLK_S3D1), 138 DEF_MOD("sys-dmac0", 219, R8A77995_CLK_S3D1), 139 DEF_MOD("sceg-pub", 229, R8A77995_CLK_CR), 140 DEF_MOD("cmt3", 300, R8A77995_CLK_R), 141 DEF_MOD("cmt2", 301, R8A77995_CLK_R), 142 DEF_MOD("cmt1", 302, R8A77995_CLK_R), 143 DEF_MOD("cmt0", 303, R8A77995_CLK_R), 144 DEF_MOD("scif2", 310, R8A77995_CLK_S3D4C), 145 DEF_MOD("emmc0", 312, R8A77995_CLK_SD0), 146 DEF_MOD("usb-dmac0", 330, R8A77995_CLK_S3D1), 147 DEF_MOD("usb-dmac1", 331, R8A77995_CLK_S3D1), 148 DEF_MOD("rwdt", 402, R8A77995_CLK_R), 149 DEF_MOD("intc-ex", 407, R8A77995_CLK_CP), 150 DEF_MOD("intc-ap", 408, R8A77995_CLK_S1D2), 151 DEF_MOD("audmac0", 502, R8A77995_CLK_S1D2), 152 DEF_MOD("hscif3", 517, R8A77995_CLK_S3D1C), 153 DEF_MOD("hscif0", 520, R8A77995_CLK_S3D1C), 154 DEF_MOD("thermal", 522, R8A77995_CLK_CP), 155 DEF_MOD("pwm", 523, R8A77995_CLK_S3D4C), 156 DEF_MOD("fcpvd1", 602, R8A77995_CLK_S1D2), 157 DEF_MOD("fcpvd0", 603, R8A77995_CLK_S1D2), 158 DEF_MOD("fcpvbs", 607, R8A77995_CLK_S0D1), 159 DEF_MOD("vspd1", 622, R8A77995_CLK_S1D2), 160 DEF_MOD("vspd0", 623, R8A77995_CLK_S1D2), 161 DEF_MOD("vspbs", 627, R8A77995_CLK_S0D1), 162 DEF_MOD("ehci0", 703, R8A77995_CLK_S3D2), 163 DEF_MOD("hsusb", 704, R8A77995_CLK_S3D2), 164 DEF_MOD("cmm1", 710, R8A77995_CLK_S1D1), 165 DEF_MOD("cmm0", 711, R8A77995_CLK_S1D1), 166 DEF_MOD("du1", 723, R8A77995_CLK_S1D1), 167 DEF_MOD("du0", 724, R8A77995_CLK_S1D1), 168 DEF_MOD("lvds", 727, R8A77995_CLK_S2D1), 169 DEF_MOD("mlp", 802, R8A77995_CLK_S2D1), 170 DEF_MOD("vin4", 807, R8A77995_CLK_S3D1), 171 DEF_MOD("etheravb", 812, R8A77995_CLK_S3D2), 172 DEF_MOD("imr0", 823, R8A77995_CLK_S1D2), 173 DEF_MOD("gpio6", 906, R8A77995_CLK_S3D4), 174 DEF_MOD("gpio5", 907, R8A77995_CLK_S3D4), 175 DEF_MOD("gpio4", 908, R8A77995_CLK_S3D4), 176 DEF_MOD("gpio3", 909, R8A77995_CLK_S3D4), 177 DEF_MOD("gpio2", 910, R8A77995_CLK_S3D4), 178 DEF_MOD("gpio1", 911, R8A77995_CLK_S3D4), 179 DEF_MOD("gpio0", 912, R8A77995_CLK_S3D4), 180 DEF_MOD("can-fd", 914, R8A77995_CLK_S3D2), 181 DEF_MOD("can-if1", 915, R8A77995_CLK_S3D4), 182 DEF_MOD("can-if0", 916, R8A77995_CLK_S3D4), 183 DEF_MOD("rpc-if", 917, R8A77995_CLK_RPCD2), 184 DEF_MOD("adg", 922, R8A77995_CLK_ZA2), 185 DEF_MOD("i2c3", 928, R8A77995_CLK_S3D2), 186 DEF_MOD("i2c2", 929, R8A77995_CLK_S3D2), 187 DEF_MOD("i2c1", 930, R8A77995_CLK_S3D2), 188 DEF_MOD("i2c0", 931, R8A77995_CLK_S3D2), 189 DEF_MOD("ssi-all", 1005, R8A77995_CLK_S3D4), 190 DEF_MOD("ssi4", 1011, MOD_CLK_ID(1005)), 191 DEF_MOD("ssi3", 1012, MOD_CLK_ID(1005)), 192 DEF_MOD("scu-all", 1017, R8A77995_CLK_S3D4), 193 DEF_MOD("scu-dvc1", 1018, MOD_CLK_ID(1017)), 194 DEF_MOD("scu-dvc0", 1019, MOD_CLK_ID(1017)), 195 DEF_MOD("scu-ctu1-mix1", 1020, MOD_CLK_ID(1017)), 196 DEF_MOD("scu-ctu0-mix0", 1021, MOD_CLK_ID(1017)), 197 DEF_MOD("scu-src6", 1025, MOD_CLK_ID(1017)), 198 DEF_MOD("scu-src5", 1026, MOD_CLK_ID(1017)), 199}; 200 201static const unsigned int r8a77995_crit_mod_clks[] __initconst = { 202 MOD_CLK_ID(402), /* RWDT */ 203 MOD_CLK_ID(408), /* INTC-AP (GIC) */ 204}; 205 206/* 207 * CPG Clock Data 208 */ 209 210/* 211 * MD19 EXTAL (MHz) PLL0 PLL1 PLL3 212 *-------------------------------------------------------------------- 213 * 0 48 x 1 x250/4 x100/3 x100/3 214 * 1 48 x 1 x250/4 x100/3 x58/3 215 */ 216#define CPG_PLL_CONFIG_INDEX(md) (((md) & BIT(19)) >> 19) 217 218static const struct rcar_gen3_cpg_pll_config cpg_pll_configs[2] __initconst = { 219 /* EXTAL div PLL1 mult/div PLL3 mult/div */ 220 { 1, 100, 3, 100, 3, }, 221 { 1, 100, 3, 58, 3, }, 222}; 223 224static int __init r8a77995_cpg_mssr_init(struct device *dev) 225{ 226 const struct rcar_gen3_cpg_pll_config *cpg_pll_config; 227 u32 cpg_mode; 228 int error; 229 230 error = rcar_rst_read_mode_pins(&cpg_mode); 231 if (error) 232 return error; 233 234 cpg_pll_config = &cpg_pll_configs[CPG_PLL_CONFIG_INDEX(cpg_mode)]; 235 236 return rcar_gen3_cpg_init(cpg_pll_config, 0, cpg_mode); 237} 238 239const struct cpg_mssr_info r8a77995_cpg_mssr_info __initconst = { 240 /* Core Clocks */ 241 .core_clks = r8a77995_core_clks, 242 .num_core_clks = ARRAY_SIZE(r8a77995_core_clks), 243 .last_dt_core_clk = LAST_DT_CORE_CLK, 244 .num_total_core_clks = MOD_CLK_BASE, 245 246 /* Module Clocks */ 247 .mod_clks = r8a77995_mod_clks, 248 .num_mod_clks = ARRAY_SIZE(r8a77995_mod_clks), 249 .num_hw_mod_clks = 12 * 32, 250 251 /* Critical Module Clocks */ 252 .crit_mod_clks = r8a77995_crit_mod_clks, 253 .num_crit_mod_clks = ARRAY_SIZE(r8a77995_crit_mod_clks), 254 255 /* Callbacks */ 256 .init = r8a77995_cpg_mssr_init, 257 .cpg_clk_register = rcar_gen3_cpg_clk_register, 258}; 259