1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * r8a779g0 Clock Pulse Generator / Module Standby and Software Reset 4 * 5 * Copyright (C) 2022 Renesas Electronics Corp. 6 * 7 * Based on r8a779f0-cpg-mssr.c 8 */ 9 10 #include <linux/bitfield.h> 11 #include <linux/clk.h> 12 #include <linux/clk-provider.h> 13 #include <linux/device.h> 14 #include <linux/err.h> 15 #include <linux/kernel.h> 16 #include <linux/soc/renesas/rcar-rst.h> 17 18 #include <dt-bindings/clock/r8a779g0-cpg-mssr.h> 19 20 #include "renesas-cpg-mssr.h" 21 #include "rcar-gen4-cpg.h" 22 23 enum clk_ids { 24 /* Core Clock Outputs exported to DT */ 25 LAST_DT_CORE_CLK = R8A779G0_CLK_R, 26 27 /* External Input Clocks */ 28 CLK_EXTAL, 29 CLK_EXTALR, 30 31 /* Internal Core Clocks */ 32 CLK_MAIN, 33 CLK_PLL1, 34 CLK_PLL2, 35 CLK_PLL3, 36 CLK_PLL4, 37 CLK_PLL5, 38 CLK_PLL6, 39 CLK_PLL1_DIV2, 40 CLK_PLL2_DIV2, 41 CLK_PLL3_DIV2, 42 CLK_PLL4_DIV2, 43 CLK_PLL5_DIV2, 44 CLK_PLL5_DIV4, 45 CLK_PLL6_DIV2, 46 CLK_S0, 47 CLK_S0_VIO, 48 CLK_S0_VC, 49 CLK_S0_HSC, 50 CLK_SV_VIP, 51 CLK_SV_IR, 52 CLK_SDSRC, 53 CLK_RPCSRC, 54 CLK_VIO, 55 CLK_VC, 56 CLK_OCO, 57 58 /* Module Clocks */ 59 MOD_CLK_BASE 60 }; 61 62 static const struct cpg_core_clk r8a779g0_core_clks[] __initconst = { 63 /* External Clock Inputs */ 64 DEF_INPUT("extal", CLK_EXTAL), 65 DEF_INPUT("extalr", CLK_EXTALR), 66 67 /* Internal Core Clocks */ 68 DEF_BASE(".main", CLK_MAIN, CLK_TYPE_GEN4_MAIN, CLK_EXTAL), 69 DEF_BASE(".pll1", CLK_PLL1, CLK_TYPE_GEN4_PLL1, CLK_MAIN), 70 DEF_BASE(".pll2", CLK_PLL2, CLK_TYPE_GEN4_PLL2, CLK_MAIN), 71 DEF_BASE(".pll3", CLK_PLL3, CLK_TYPE_GEN4_PLL3, CLK_MAIN), 72 DEF_BASE(".pll4", CLK_PLL4, CLK_TYPE_GEN4_PLL4, CLK_MAIN), 73 DEF_BASE(".pll5", CLK_PLL5, CLK_TYPE_GEN4_PLL5, CLK_MAIN), 74 DEF_BASE(".pll6", CLK_PLL6, CLK_TYPE_GEN4_PLL6, CLK_MAIN), 75 76 DEF_FIXED(".pll1_div2", CLK_PLL1_DIV2, CLK_PLL1, 2, 1), 77 DEF_FIXED(".pll2_div2", CLK_PLL2_DIV2, CLK_PLL2, 2, 1), 78 DEF_FIXED(".pll3_div2", CLK_PLL3_DIV2, CLK_PLL3, 2, 1), 79 DEF_FIXED(".pll4_div2", CLK_PLL4_DIV2, CLK_PLL4, 2, 1), 80 DEF_FIXED(".pll5_div2", CLK_PLL5_DIV2, CLK_PLL5, 2, 1), 81 DEF_FIXED(".pll5_div4", CLK_PLL5_DIV4, CLK_PLL5_DIV2, 2, 1), 82 DEF_FIXED(".pll6_div2", CLK_PLL6_DIV2, CLK_PLL6, 2, 1), 83 DEF_FIXED(".s0", CLK_S0, CLK_PLL1_DIV2, 2, 1), 84 DEF_FIXED(".s0_vio", CLK_S0_VIO, CLK_PLL1_DIV2, 2, 1), 85 DEF_FIXED(".s0_vc", CLK_S0_VC, CLK_PLL1_DIV2, 2, 1), 86 DEF_FIXED(".s0_hsc", CLK_S0_HSC, CLK_PLL1_DIV2, 2, 1), 87 DEF_FIXED(".sv_vip", CLK_SV_VIP, CLK_PLL1, 5, 1), 88 DEF_FIXED(".sv_ir", CLK_SV_IR, CLK_PLL1, 5, 1), 89 DEF_BASE(".sdsrc", CLK_SDSRC, CLK_TYPE_GEN4_SDSRC, CLK_PLL5), 90 DEF_RATE(".oco", CLK_OCO, 32768), 91 92 DEF_BASE(".rpcsrc", CLK_RPCSRC, CLK_TYPE_GEN4_RPCSRC, CLK_PLL5), 93 DEF_FIXED(".vio", CLK_VIO, CLK_PLL5_DIV2, 3, 1), 94 DEF_FIXED(".vc", CLK_VC, CLK_PLL5_DIV2, 3, 1), 95 96 /* Core Clock Outputs */ 97 DEF_FIXED("s0d2", R8A779G0_CLK_S0D2, CLK_S0, 2, 1), 98 DEF_FIXED("s0d3", R8A779G0_CLK_S0D3, CLK_S0, 3, 1), 99 DEF_FIXED("s0d4", R8A779G0_CLK_S0D4, CLK_S0, 4, 1), 100 DEF_FIXED("cl16m", R8A779G0_CLK_CL16M, CLK_S0, 48, 1), 101 DEF_FIXED("s0d1_vio", R8A779G0_CLK_S0D1_VIO, CLK_S0_VIO, 1, 1), 102 DEF_FIXED("s0d2_vio", R8A779G0_CLK_S0D2_VIO, CLK_S0_VIO, 2, 1), 103 DEF_FIXED("s0d4_vio", R8A779G0_CLK_S0D4_VIO, CLK_S0_VIO, 4, 1), 104 DEF_FIXED("s0d8_vio", R8A779G0_CLK_S0D8_VIO, CLK_S0_VIO, 8, 1), 105 DEF_FIXED("s0d1_vc", R8A779G0_CLK_S0D1_VC, CLK_S0_VC, 1, 1), 106 DEF_FIXED("s0d2_vc", R8A779G0_CLK_S0D2_VC, CLK_S0_VC, 2, 1), 107 DEF_FIXED("s0d4_vc", R8A779G0_CLK_S0D4_VC, CLK_S0_VC, 4, 1), 108 DEF_FIXED("s0d2_mm", R8A779G0_CLK_S0D2_MM, CLK_S0, 2, 1), 109 DEF_FIXED("s0d4_mm", R8A779G0_CLK_S0D4_MM, CLK_S0, 4, 1), 110 DEF_FIXED("cl16m_mm", R8A779G0_CLK_CL16M_MM, CLK_S0, 48, 1), 111 DEF_FIXED("s0d2_u3dg", R8A779G0_CLK_S0D2_U3DG, CLK_S0, 2, 1), 112 DEF_FIXED("s0d4_u3dg", R8A779G0_CLK_S0D4_U3DG, CLK_S0, 4, 1), 113 DEF_FIXED("s0d2_rt", R8A779G0_CLK_S0D2_RT, CLK_S0, 2, 1), 114 DEF_FIXED("s0d3_rt", R8A779G0_CLK_S0D3_RT, CLK_S0, 3, 1), 115 DEF_FIXED("s0d4_rt", R8A779G0_CLK_S0D4_RT, CLK_S0, 4, 1), 116 DEF_FIXED("s0d6_rt", R8A779G0_CLK_S0D6_RT, CLK_S0, 6, 1), 117 DEF_FIXED("s0d24_rt", R8A779G0_CLK_S0D24_RT, CLK_S0, 24, 1), 118 DEF_FIXED("cl16m_rt", R8A779G0_CLK_CL16M_RT, CLK_S0, 48, 1), 119 DEF_FIXED("s0d2_per", R8A779G0_CLK_S0D2_PER, CLK_S0, 2, 1), 120 DEF_FIXED("s0d3_per", R8A779G0_CLK_S0D3_PER, CLK_S0, 3, 1), 121 DEF_FIXED("s0d4_per", R8A779G0_CLK_S0D4_PER, CLK_S0, 4, 1), 122 DEF_FIXED("s0d6_per", R8A779G0_CLK_S0D6_PER, CLK_S0, 6, 1), 123 DEF_FIXED("s0d12_per", R8A779G0_CLK_S0D12_PER, CLK_S0, 12, 1), 124 DEF_FIXED("s0d24_per", R8A779G0_CLK_S0D24_PER, CLK_S0, 24, 1), 125 DEF_FIXED("cl16m_per", R8A779G0_CLK_CL16M_PER, CLK_S0, 48, 1), 126 DEF_FIXED("s0d1_hsc", R8A779G0_CLK_S0D1_HSC, CLK_S0_HSC, 1, 1), 127 DEF_FIXED("s0d2_hsc", R8A779G0_CLK_S0D2_HSC, CLK_S0_HSC, 2, 1), 128 DEF_FIXED("s0d4_hsc", R8A779G0_CLK_S0D4_HSC, CLK_S0_HSC, 4, 1), 129 DEF_FIXED("cl16m_hsc", R8A779G0_CLK_CL16M_HSC, CLK_S0_HSC, 48, 1), 130 DEF_FIXED("s0d2_cc", R8A779G0_CLK_S0D2_CC, CLK_S0, 2, 1), 131 DEF_FIXED("svd1_ir", R8A779G0_CLK_SVD1_IR, CLK_SV_IR, 1, 1), 132 DEF_FIXED("svd2_ir", R8A779G0_CLK_SVD2_IR, CLK_SV_IR, 2, 1), 133 DEF_FIXED("svd1_vip", R8A779G0_CLK_SVD1_VIP, CLK_SV_VIP, 1, 1), 134 DEF_FIXED("svd2_vip", R8A779G0_CLK_SVD2_VIP, CLK_SV_VIP, 2, 1), 135 DEF_FIXED("cbfusa", R8A779G0_CLK_CBFUSA, CLK_EXTAL, 2, 1), 136 DEF_FIXED("cpex", R8A779G0_CLK_CPEX, CLK_EXTAL, 2, 1), 137 DEF_FIXED("viobus", R8A779G0_CLK_VIOBUS, CLK_VIO, 1, 1), 138 DEF_FIXED("viobusd2", R8A779G0_CLK_VIOBUSD2, CLK_VIO, 2, 1), 139 DEF_FIXED("vcbus", R8A779G0_CLK_VCBUS, CLK_VC, 1, 1), 140 DEF_FIXED("vcbusd2", R8A779G0_CLK_VCBUSD2, CLK_VC, 2, 1), 141 142 DEF_GEN4_SD("sd0", R8A779G0_CLK_SD0, CLK_SDSRC, 0x870), 143 DEF_DIV6P1("mso", R8A779G0_CLK_MSO, CLK_PLL5_DIV4, 0x87c), 144 145 DEF_BASE("rpc", R8A779G0_CLK_RPC, CLK_TYPE_GEN4_RPC, CLK_RPCSRC), 146 DEF_BASE("rpcd2", R8A779G0_CLK_RPCD2, CLK_TYPE_GEN4_RPCD2, R8A779G0_CLK_RPC), 147 148 DEF_GEN4_OSC("osc", R8A779G0_CLK_OSC, CLK_EXTAL, 8), 149 DEF_GEN4_MDSEL("r", R8A779G0_CLK_R, 29, CLK_EXTALR, 1, CLK_OCO, 1), 150 }; 151 152 static const struct mssr_mod_clk r8a779g0_mod_clks[] __initconst = { 153 DEF_MOD("hscif0", 514, R8A779G0_CLK_S0D3_PER), 154 DEF_MOD("hscif1", 515, R8A779G0_CLK_S0D3_PER), 155 DEF_MOD("hscif2", 516, R8A779G0_CLK_S0D3_PER), 156 DEF_MOD("hscif3", 517, R8A779G0_CLK_S0D3_PER), 157 }; 158 159 /* 160 * CPG Clock Data 161 */ 162 /* 163 * MD EXTAL PLL1 PLL2 PLL3 PLL4 PLL5 PLL6 OSC 164 * 14 13 (MHz) 165 * ------------------------------------------------------------------------ 166 * 0 0 16.66 / 1 x192 x204 x192 x144 x192 x168 /15 167 * 0 1 20 / 1 x160 x170 x160 x120 x160 x140 /19 168 * 1 0 Prohibited setting 169 * 1 1 33.33 / 2 x192 x204 x192 x144 x192 x168 /38 170 */ 171 #define CPG_PLL_CONFIG_INDEX(md) ((((md) & BIT(14)) >> 13) | \ 172 (((md) & BIT(13)) >> 13)) 173 174 static const struct rcar_gen4_cpg_pll_config cpg_pll_configs[4] = { 175 /* EXTAL div PLL1 mult/div PLL2 mult/div PLL3 mult/div PLL4 mult/div PLL5 mult/div PLL6 mult/div OSC prediv */ 176 { 1, 192, 1, 204, 1, 192, 1, 144, 1, 192, 1, 168, 1, 15, }, 177 { 1, 160, 1, 170, 1, 160, 1, 120, 1, 160, 1, 140, 1, 19, }, 178 { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, }, 179 { 2, 192, 1, 204, 1, 192, 1, 144, 1, 192, 1, 168, 1, 38, }, 180 }; 181 182 static int __init r8a779g0_cpg_mssr_init(struct device *dev) 183 { 184 const struct rcar_gen4_cpg_pll_config *cpg_pll_config; 185 u32 cpg_mode; 186 int error; 187 188 error = rcar_rst_read_mode_pins(&cpg_mode); 189 if (error) 190 return error; 191 192 cpg_pll_config = &cpg_pll_configs[CPG_PLL_CONFIG_INDEX(cpg_mode)]; 193 if (!cpg_pll_config->extal_div) { 194 dev_err(dev, "Prohibited setting (cpg_mode=0x%x)\n", cpg_mode); 195 return -EINVAL; 196 } 197 198 return rcar_gen4_cpg_init(cpg_pll_config, CLK_EXTALR, cpg_mode); 199 } 200 201 const struct cpg_mssr_info r8a779g0_cpg_mssr_info __initconst = { 202 /* Core Clocks */ 203 .core_clks = r8a779g0_core_clks, 204 .num_core_clks = ARRAY_SIZE(r8a779g0_core_clks), 205 .last_dt_core_clk = LAST_DT_CORE_CLK, 206 .num_total_core_clks = MOD_CLK_BASE, 207 208 /* Module Clocks */ 209 .mod_clks = r8a779g0_mod_clks, 210 .num_mod_clks = ARRAY_SIZE(r8a779g0_mod_clks), 211 .num_hw_mod_clks = 30 * 32, 212 213 /* Callbacks */ 214 .init = r8a779g0_cpg_mssr_init, 215 .cpg_clk_register = rcar_gen4_cpg_clk_register, 216 217 .reg_layout = CLK_REG_LAYOUT_RCAR_GEN4, 218 }; 219