1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * RZ/V2M Clock Pulse Generator / Module Standby and Software Reset 4 * 5 * Copyright (C) 2022 Renesas Electronics Corp. 6 * 7 * Based on r9a07g044-cpg.c 8 */ 9 10 #include <linux/clk-provider.h> 11 #include <linux/device.h> 12 #include <linux/init.h> 13 #include <linux/kernel.h> 14 15 #include <dt-bindings/clock/r9a09g011-cpg.h> 16 17 #include "rzg2l-cpg.h" 18 19 #define RZV2M_SAMPLL4_CLK1 0x104 20 #define RZV2M_SAMPLL4_CLK2 0x108 21 22 #define PLL4_CONF (RZV2M_SAMPLL4_CLK1 << 22 | RZV2M_SAMPLL4_CLK2 << 12) 23 24 #define DIV_A DDIV_PACK(0x200, 0, 3) 25 #define DIV_B DDIV_PACK(0x204, 0, 2) 26 #define DIV_E DDIV_PACK(0x204, 8, 1) 27 #define DIV_W DDIV_PACK(0x328, 0, 3) 28 29 #define SEL_B SEL_PLL_PACK(0x214, 0, 1) 30 #define SEL_E SEL_PLL_PACK(0x214, 2, 1) 31 #define SEL_W0 SEL_PLL_PACK(0x32C, 0, 1) 32 33 enum clk_ids { 34 /* Core Clock Outputs exported to DT */ 35 LAST_DT_CORE_CLK = 0, 36 37 /* External Input Clocks */ 38 CLK_EXTAL, 39 40 /* Internal Core Clocks */ 41 CLK_MAIN, 42 CLK_MAIN_24, 43 CLK_MAIN_2, 44 CLK_PLL1, 45 CLK_PLL2, 46 CLK_PLL2_800, 47 CLK_PLL2_400, 48 CLK_PLL2_200, 49 CLK_PLL2_100, 50 CLK_PLL4, 51 CLK_DIV_A, 52 CLK_DIV_B, 53 CLK_DIV_E, 54 CLK_DIV_W, 55 CLK_SEL_B, 56 CLK_SEL_B_D2, 57 CLK_SEL_E, 58 CLK_SEL_W0, 59 60 /* Module Clocks */ 61 MOD_CLK_BASE 62 }; 63 64 /* Divider tables */ 65 static const struct clk_div_table dtable_diva[] = { 66 {0, 1}, 67 {1, 2}, 68 {2, 3}, 69 {3, 4}, 70 {4, 6}, 71 {5, 12}, 72 {6, 24}, 73 {0, 0}, 74 }; 75 76 static const struct clk_div_table dtable_divb[] = { 77 {0, 1}, 78 {1, 2}, 79 {2, 4}, 80 {3, 8}, 81 {0, 0}, 82 }; 83 84 static const struct clk_div_table dtable_divw[] = { 85 {0, 6}, 86 {1, 7}, 87 {2, 8}, 88 {3, 9}, 89 {4, 10}, 90 {5, 11}, 91 {6, 12}, 92 {0, 0}, 93 }; 94 95 /* Mux clock tables */ 96 static const char * const sel_b[] = { ".main", ".divb" }; 97 static const char * const sel_e[] = { ".main", ".dive" }; 98 static const char * const sel_w[] = { ".main", ".divw" }; 99 100 static const struct cpg_core_clk r9a09g011_core_clks[] __initconst = { 101 /* External Clock Inputs */ 102 DEF_INPUT("extal", CLK_EXTAL), 103 104 /* Internal Core Clocks */ 105 DEF_FIXED(".main", CLK_MAIN, CLK_EXTAL, 1, 1), 106 DEF_FIXED(".main_24", CLK_MAIN_24, CLK_MAIN, 1, 2), 107 DEF_FIXED(".main_2", CLK_MAIN_2, CLK_MAIN, 1, 24), 108 DEF_FIXED(".pll1", CLK_PLL1, CLK_MAIN_2, 498, 1), 109 DEF_FIXED(".pll2", CLK_PLL2, CLK_MAIN_2, 800, 1), 110 DEF_FIXED(".pll2_800", CLK_PLL2_800, CLK_PLL2, 1, 2), 111 DEF_FIXED(".pll2_400", CLK_PLL2_400, CLK_PLL2_800, 1, 2), 112 DEF_FIXED(".pll2_200", CLK_PLL2_200, CLK_PLL2_800, 1, 4), 113 DEF_FIXED(".pll2_100", CLK_PLL2_100, CLK_PLL2_800, 1, 8), 114 DEF_SAMPLL(".pll4", CLK_PLL4, CLK_MAIN_2, PLL4_CONF), 115 116 DEF_DIV_RO(".diva", CLK_DIV_A, CLK_PLL1, DIV_A, dtable_diva), 117 DEF_DIV_RO(".divb", CLK_DIV_B, CLK_PLL2_400, DIV_B, dtable_divb), 118 DEF_DIV_RO(".dive", CLK_DIV_E, CLK_PLL2_100, DIV_E, NULL), 119 DEF_DIV_RO(".divw", CLK_DIV_W, CLK_PLL4, DIV_W, dtable_divw), 120 121 DEF_MUX_RO(".selb", CLK_SEL_B, SEL_B, sel_b), 122 DEF_MUX_RO(".sele", CLK_SEL_E, SEL_E, sel_e), 123 DEF_MUX(".selw0", CLK_SEL_W0, SEL_W0, sel_w), 124 125 DEF_FIXED(".selb_d2", CLK_SEL_B_D2, CLK_SEL_B, 1, 2), 126 }; 127 128 static const struct rzg2l_mod_clk r9a09g011_mod_clks[] __initconst = { 129 DEF_MOD("pfc", R9A09G011_PFC_PCLK, CLK_MAIN, 0x400, 2), 130 DEF_MOD("gic", R9A09G011_GIC_CLK, CLK_SEL_B_D2, 0x400, 5), 131 DEF_COUPLED("eth_axi", R9A09G011_ETH0_CLK_AXI, CLK_PLL2_200, 0x40c, 8), 132 DEF_COUPLED("eth_chi", R9A09G011_ETH0_CLK_CHI, CLK_PLL2_100, 0x40c, 8), 133 DEF_MOD("eth_clk_gptp", R9A09G011_ETH0_GPTP_EXT, CLK_PLL2_100, 0x40c, 9), 134 DEF_MOD("syc_cnt_clk", R9A09G011_SYC_CNT_CLK, CLK_MAIN_24, 0x41c, 12), 135 DEF_MOD("wdt0_pclk", R9A09G011_WDT0_PCLK, CLK_SEL_E, 0x428, 12), 136 DEF_MOD("wdt0_clk", R9A09G011_WDT0_CLK, CLK_MAIN, 0x428, 13), 137 DEF_MOD("urt_pclk", R9A09G011_URT_PCLK, CLK_SEL_E, 0x438, 4), 138 DEF_MOD("urt0_clk", R9A09G011_URT0_CLK, CLK_SEL_W0, 0x438, 5), 139 DEF_MOD("ca53", R9A09G011_CA53_CLK, CLK_DIV_A, 0x448, 0), 140 }; 141 142 static const struct rzg2l_reset r9a09g011_resets[] = { 143 DEF_RST(R9A09G011_PFC_PRESETN, 0x600, 2), 144 DEF_RST_MON(R9A09G011_ETH0_RST_HW_N, 0x608, 11, 11), 145 DEF_RST_MON(R9A09G011_SYC_RST_N, 0x610, 9, 13), 146 DEF_RST_MON(R9A09G011_WDT0_PRESETN, 0x614, 12, 19), 147 }; 148 149 static const unsigned int r9a09g011_crit_mod_clks[] __initconst = { 150 MOD_CLK_BASE + R9A09G011_CA53_CLK, 151 MOD_CLK_BASE + R9A09G011_GIC_CLK, 152 MOD_CLK_BASE + R9A09G011_SYC_CNT_CLK, 153 MOD_CLK_BASE + R9A09G011_URT_PCLK, 154 }; 155 156 const struct rzg2l_cpg_info r9a09g011_cpg_info = { 157 /* Core Clocks */ 158 .core_clks = r9a09g011_core_clks, 159 .num_core_clks = ARRAY_SIZE(r9a09g011_core_clks), 160 .last_dt_core_clk = LAST_DT_CORE_CLK, 161 .num_total_core_clks = MOD_CLK_BASE, 162 163 /* Critical Module Clocks */ 164 .crit_mod_clks = r9a09g011_crit_mod_clks, 165 .num_crit_mod_clks = ARRAY_SIZE(r9a09g011_crit_mod_clks), 166 167 /* Module Clocks */ 168 .mod_clks = r9a09g011_mod_clks, 169 .num_mod_clks = ARRAY_SIZE(r9a09g011_mod_clks), 170 .num_hw_mod_clks = R9A09G011_CA53_CLK + 1, 171 172 /* Resets */ 173 .resets = r9a09g011_resets, 174 .num_resets = ARRAY_SIZE(r9a09g011_resets), 175 176 .has_clk_mon_regs = false, 177 }; 178