linux/drivers/clk/renesas/r8a7745-cpg-mssr.c
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   1// SPDX-License-Identifier: GPL-2.0
   2/*
   3 * r8a7745 Clock Pulse Generator / Module Standby and Software Reset
   4 *
   5 * Copyright (C) 2016 Cogent Embedded Inc.
   6 */
   7
   8#include <linux/device.h>
   9#include <linux/init.h>
  10#include <linux/kernel.h>
  11#include <linux/soc/renesas/rcar-rst.h>
  12
  13#include <dt-bindings/clock/r8a7745-cpg-mssr.h>
  14
  15#include "renesas-cpg-mssr.h"
  16#include "rcar-gen2-cpg.h"
  17
  18enum clk_ids {
  19        /* Core Clock Outputs exported to DT */
  20        LAST_DT_CORE_CLK = R8A7745_CLK_OSC,
  21
  22        /* External Input Clocks */
  23        CLK_EXTAL,
  24        CLK_USB_EXTAL,
  25
  26        /* Internal Core Clocks */
  27        CLK_MAIN,
  28        CLK_PLL0,
  29        CLK_PLL1,
  30        CLK_PLL3,
  31        CLK_PLL1_DIV2,
  32
  33        /* Module Clocks */
  34        MOD_CLK_BASE
  35};
  36
  37static const struct cpg_core_clk r8a7745_core_clks[] __initconst = {
  38        /* External Clock Inputs */
  39        DEF_INPUT("extal",      CLK_EXTAL),
  40        DEF_INPUT("usb_extal",  CLK_USB_EXTAL),
  41
  42        /* Internal Core Clocks */
  43        DEF_BASE(".main",       CLK_MAIN, CLK_TYPE_GEN2_MAIN, CLK_EXTAL),
  44        DEF_BASE(".pll0",       CLK_PLL0, CLK_TYPE_GEN2_PLL0, CLK_MAIN),
  45        DEF_BASE(".pll1",       CLK_PLL1, CLK_TYPE_GEN2_PLL1, CLK_MAIN),
  46        DEF_BASE(".pll3",       CLK_PLL3, CLK_TYPE_GEN2_PLL3, CLK_MAIN),
  47
  48        DEF_FIXED(".pll1_div2", CLK_PLL1_DIV2, CLK_PLL1, 2, 1),
  49
  50        /* Core Clock Outputs */
  51        DEF_BASE("sdh",  R8A7745_CLK_SDH,  CLK_TYPE_GEN2_SDH,   CLK_PLL1),
  52        DEF_BASE("sd0",  R8A7745_CLK_SD0,  CLK_TYPE_GEN2_SD0,   CLK_PLL1),
  53        DEF_BASE("qspi", R8A7745_CLK_QSPI, CLK_TYPE_GEN2_QSPI,  CLK_PLL1_DIV2),
  54        DEF_BASE("rcan", R8A7745_CLK_RCAN, CLK_TYPE_GEN2_RCAN,  CLK_USB_EXTAL),
  55
  56        DEF_FIXED("z2",    R8A7745_CLK_Z2,      CLK_PLL0,           1, 1),
  57        DEF_FIXED("zg",    R8A7745_CLK_ZG,      CLK_PLL1,           6, 1),
  58        DEF_FIXED("zx",    R8A7745_CLK_ZX,      CLK_PLL1,           3, 1),
  59        DEF_FIXED("zs",    R8A7745_CLK_ZS,      CLK_PLL1,           6, 1),
  60        DEF_FIXED("hp",    R8A7745_CLK_HP,      CLK_PLL1,          12, 1),
  61        DEF_FIXED("b",     R8A7745_CLK_B,       CLK_PLL1,          12, 1),
  62        DEF_FIXED("lb",    R8A7745_CLK_LB,      CLK_PLL1,          24, 1),
  63        DEF_FIXED("p",     R8A7745_CLK_P,       CLK_PLL1,          24, 1),
  64        DEF_FIXED("cl",    R8A7745_CLK_CL,      CLK_PLL1,          48, 1),
  65        DEF_FIXED("cp",    R8A7745_CLK_CP,      CLK_PLL1,          48, 1),
  66        DEF_FIXED("m2",    R8A7745_CLK_M2,      CLK_PLL1,           8, 1),
  67        DEF_FIXED("zb3",   R8A7745_CLK_ZB3,     CLK_PLL3,           4, 1),
  68        DEF_FIXED("zb3d2", R8A7745_CLK_ZB3D2,   CLK_PLL3,           8, 1),
  69        DEF_FIXED("ddr",   R8A7745_CLK_DDR,     CLK_PLL3,           8, 1),
  70        DEF_FIXED("mp",    R8A7745_CLK_MP,      CLK_PLL1_DIV2,     15, 1),
  71        DEF_FIXED("cpex",  R8A7745_CLK_CPEX,    CLK_EXTAL,          2, 1),
  72        DEF_FIXED("r",     R8A7745_CLK_R,       CLK_PLL1,       49152, 1),
  73        DEF_FIXED("osc",   R8A7745_CLK_OSC,     CLK_PLL1,       12288, 1),
  74
  75        DEF_DIV6P1("sd2",  R8A7745_CLK_SD2,     CLK_PLL1_DIV2,  0x078),
  76        DEF_DIV6P1("sd3",  R8A7745_CLK_SD3,     CLK_PLL1_DIV2,  0x26c),
  77        DEF_DIV6P1("mmc0", R8A7745_CLK_MMC0,    CLK_PLL1_DIV2,  0x240),
  78};
  79
  80static const struct mssr_mod_clk r8a7745_mod_clks[] __initconst = {
  81        DEF_MOD("msiof0",                  0,   R8A7745_CLK_MP),
  82        DEF_MOD("vcp0",                  101,   R8A7745_CLK_ZS),
  83        DEF_MOD("vpc0",                  103,   R8A7745_CLK_ZS),
  84        DEF_MOD("tmu1",                  111,   R8A7745_CLK_P),
  85        DEF_MOD("3dg",                   112,   R8A7745_CLK_ZG),
  86        DEF_MOD("2d-dmac",               115,   R8A7745_CLK_ZS),
  87        DEF_MOD("fdp1-0",                119,   R8A7745_CLK_ZS),
  88        DEF_MOD("tmu3",                  121,   R8A7745_CLK_P),
  89        DEF_MOD("tmu2",                  122,   R8A7745_CLK_P),
  90        DEF_MOD("cmt0",                  124,   R8A7745_CLK_R),
  91        DEF_MOD("tmu0",                  125,   R8A7745_CLK_CP),
  92        DEF_MOD("vsp1du0",               128,   R8A7745_CLK_ZS),
  93        DEF_MOD("vsp1-sy",               131,   R8A7745_CLK_ZS),
  94        DEF_MOD("scifa2",                202,   R8A7745_CLK_MP),
  95        DEF_MOD("scifa1",                203,   R8A7745_CLK_MP),
  96        DEF_MOD("scifa0",                204,   R8A7745_CLK_MP),
  97        DEF_MOD("msiof2",                205,   R8A7745_CLK_MP),
  98        DEF_MOD("scifb0",                206,   R8A7745_CLK_MP),
  99        DEF_MOD("scifb1",                207,   R8A7745_CLK_MP),
 100        DEF_MOD("msiof1",                208,   R8A7745_CLK_MP),
 101        DEF_MOD("scifb2",                216,   R8A7745_CLK_MP),
 102        DEF_MOD("sys-dmac1",             218,   R8A7745_CLK_ZS),
 103        DEF_MOD("sys-dmac0",             219,   R8A7745_CLK_ZS),
 104        DEF_MOD("tpu0",                  304,   R8A7745_CLK_CP),
 105        DEF_MOD("sdhi3",                 311,   R8A7745_CLK_SD3),
 106        DEF_MOD("sdhi2",                 312,   R8A7745_CLK_SD2),
 107        DEF_MOD("sdhi0",                 314,   R8A7745_CLK_SD0),
 108        DEF_MOD("mmcif0",                315,   R8A7745_CLK_MMC0),
 109        DEF_MOD("iic0",                  318,   R8A7745_CLK_HP),
 110        DEF_MOD("iic1",                  323,   R8A7745_CLK_HP),
 111        DEF_MOD("cmt1",                  329,   R8A7745_CLK_R),
 112        DEF_MOD("usbhs-dmac0",           330,   R8A7745_CLK_HP),
 113        DEF_MOD("usbhs-dmac1",           331,   R8A7745_CLK_HP),
 114        DEF_MOD("rwdt",                  402,   R8A7745_CLK_R),
 115        DEF_MOD("irqc",                  407,   R8A7745_CLK_CP),
 116        DEF_MOD("intc-sys",              408,   R8A7745_CLK_ZS),
 117        DEF_MOD("audio-dmac0",           502,   R8A7745_CLK_HP),
 118        DEF_MOD("pwm",                   523,   R8A7745_CLK_P),
 119        DEF_MOD("usb-ehci",              703,   R8A7745_CLK_MP),
 120        DEF_MOD("usbhs",                 704,   R8A7745_CLK_HP),
 121        DEF_MOD("hscif2",                713,   R8A7745_CLK_ZS),
 122        DEF_MOD("scif5",                 714,   R8A7745_CLK_P),
 123        DEF_MOD("scif4",                 715,   R8A7745_CLK_P),
 124        DEF_MOD("hscif1",                716,   R8A7745_CLK_ZS),
 125        DEF_MOD("hscif0",                717,   R8A7745_CLK_ZS),
 126        DEF_MOD("scif3",                 718,   R8A7745_CLK_P),
 127        DEF_MOD("scif2",                 719,   R8A7745_CLK_P),
 128        DEF_MOD("scif1",                 720,   R8A7745_CLK_P),
 129        DEF_MOD("scif0",                 721,   R8A7745_CLK_P),
 130        DEF_MOD("du1",                   723,   R8A7745_CLK_ZX),
 131        DEF_MOD("du0",                   724,   R8A7745_CLK_ZX),
 132        DEF_MOD("ipmmu-sgx",             800,   R8A7745_CLK_ZX),
 133        DEF_MOD("vin1",                  810,   R8A7745_CLK_ZG),
 134        DEF_MOD("vin0",                  811,   R8A7745_CLK_ZG),
 135        DEF_MOD("etheravb",              812,   R8A7745_CLK_HP),
 136        DEF_MOD("ether",                 813,   R8A7745_CLK_P),
 137        DEF_MOD("gpio6",                 905,   R8A7745_CLK_CP),
 138        DEF_MOD("gpio5",                 907,   R8A7745_CLK_CP),
 139        DEF_MOD("gpio4",                 908,   R8A7745_CLK_CP),
 140        DEF_MOD("gpio3",                 909,   R8A7745_CLK_CP),
 141        DEF_MOD("gpio2",                 910,   R8A7745_CLK_CP),
 142        DEF_MOD("gpio1",                 911,   R8A7745_CLK_CP),
 143        DEF_MOD("gpio0",                 912,   R8A7745_CLK_CP),
 144        DEF_MOD("can1",                  915,   R8A7745_CLK_P),
 145        DEF_MOD("can0",                  916,   R8A7745_CLK_P),
 146        DEF_MOD("qspi_mod",              917,   R8A7745_CLK_QSPI),
 147        DEF_MOD("i2c5",                  925,   R8A7745_CLK_HP),
 148        DEF_MOD("i2c4",                  927,   R8A7745_CLK_HP),
 149        DEF_MOD("i2c3",                  928,   R8A7745_CLK_HP),
 150        DEF_MOD("i2c2",                  929,   R8A7745_CLK_HP),
 151        DEF_MOD("i2c1",                  930,   R8A7745_CLK_HP),
 152        DEF_MOD("i2c0",                  931,   R8A7745_CLK_HP),
 153        DEF_MOD("ssi-all",              1005,   R8A7745_CLK_P),
 154        DEF_MOD("ssi9",                 1006,   MOD_CLK_ID(1005)),
 155        DEF_MOD("ssi8",                 1007,   MOD_CLK_ID(1005)),
 156        DEF_MOD("ssi7",                 1008,   MOD_CLK_ID(1005)),
 157        DEF_MOD("ssi6",                 1009,   MOD_CLK_ID(1005)),
 158        DEF_MOD("ssi5",                 1010,   MOD_CLK_ID(1005)),
 159        DEF_MOD("ssi4",                 1011,   MOD_CLK_ID(1005)),
 160        DEF_MOD("ssi3",                 1012,   MOD_CLK_ID(1005)),
 161        DEF_MOD("ssi2",                 1013,   MOD_CLK_ID(1005)),
 162        DEF_MOD("ssi1",                 1014,   MOD_CLK_ID(1005)),
 163        DEF_MOD("ssi0",                 1015,   MOD_CLK_ID(1005)),
 164        DEF_MOD("scu-all",              1017,   R8A7745_CLK_P),
 165        DEF_MOD("scu-dvc1",             1018,   MOD_CLK_ID(1017)),
 166        DEF_MOD("scu-dvc0",             1019,   MOD_CLK_ID(1017)),
 167        DEF_MOD("scu-ctu1-mix1",        1020,   MOD_CLK_ID(1017)),
 168        DEF_MOD("scu-ctu0-mix0",        1021,   MOD_CLK_ID(1017)),
 169        DEF_MOD("scu-src6",             1025,   MOD_CLK_ID(1017)),
 170        DEF_MOD("scu-src5",             1026,   MOD_CLK_ID(1017)),
 171        DEF_MOD("scu-src4",             1027,   MOD_CLK_ID(1017)),
 172        DEF_MOD("scu-src3",             1028,   MOD_CLK_ID(1017)),
 173        DEF_MOD("scu-src2",             1029,   MOD_CLK_ID(1017)),
 174        DEF_MOD("scu-src1",             1030,   MOD_CLK_ID(1017)),
 175        DEF_MOD("scifa3",               1106,   R8A7745_CLK_MP),
 176        DEF_MOD("scifa4",               1107,   R8A7745_CLK_MP),
 177        DEF_MOD("scifa5",               1108,   R8A7745_CLK_MP),
 178};
 179
 180static const unsigned int r8a7745_crit_mod_clks[] __initconst = {
 181        MOD_CLK_ID(402),        /* RWDT */
 182        MOD_CLK_ID(408),        /* INTC-SYS (GIC) */
 183};
 184
 185/*
 186 * CPG Clock Data
 187 */
 188
 189/*
 190 *    MD        EXTAL           PLL0    PLL1    PLL3
 191 * 14 13 19     (MHz)           *1      *2
 192 *---------------------------------------------------
 193 * 0  0  1      15              x200/3  x208/2  x88
 194 * 0  1  1      20              x150/3  x156/2  x66
 195 * 1  0  1      26 / 2          x230/3  x240/2  x102
 196 * 1  1  1      30 / 2          x200/3  x208/2  x88
 197 *
 198 * *1 : Table 7.5b indicates VCO output (PLL0 = VCO/3)
 199 * *2 : Table 7.5b indicates VCO output (PLL1 = VCO/2)
 200 */
 201#define CPG_PLL_CONFIG_INDEX(md)        ((((md) & BIT(14)) >> 13) | \
 202                                         (((md) & BIT(13)) >> 13))
 203
 204static const struct rcar_gen2_cpg_pll_config cpg_pll_configs[8] __initconst = {
 205        /* EXTAL div    PLL1 mult       PLL3 mult       PLL0 mult */
 206        { 1,            208,            88,             200     },
 207        { 1,            156,            66,             150     },
 208        { 2,            240,            102,            230     },
 209        { 2,            208,            88,             200     },
 210};
 211
 212static int __init r8a7745_cpg_mssr_init(struct device *dev)
 213{
 214        const struct rcar_gen2_cpg_pll_config *cpg_pll_config;
 215        u32 cpg_mode;
 216        int error;
 217
 218        error = rcar_rst_read_mode_pins(&cpg_mode);
 219        if (error)
 220                return error;
 221
 222        cpg_pll_config = &cpg_pll_configs[CPG_PLL_CONFIG_INDEX(cpg_mode)];
 223
 224        return rcar_gen2_cpg_init(cpg_pll_config, 3, cpg_mode);
 225}
 226
 227const struct cpg_mssr_info r8a7745_cpg_mssr_info __initconst = {
 228        /* Core Clocks */
 229        .core_clks = r8a7745_core_clks,
 230        .num_core_clks = ARRAY_SIZE(r8a7745_core_clks),
 231        .last_dt_core_clk = LAST_DT_CORE_CLK,
 232        .num_total_core_clks = MOD_CLK_BASE,
 233
 234        /* Module Clocks */
 235        .mod_clks = r8a7745_mod_clks,
 236        .num_mod_clks = ARRAY_SIZE(r8a7745_mod_clks),
 237        .num_hw_mod_clks = 12 * 32,
 238
 239        /* Critical Module Clocks */
 240        .crit_mod_clks = r8a7745_crit_mod_clks,
 241        .num_crit_mod_clks = ARRAY_SIZE(r8a7745_crit_mod_clks),
 242
 243        /* Callbacks */
 244        .init = r8a7745_cpg_mssr_init,
 245        .cpg_clk_register = rcar_gen2_cpg_clk_register,
 246};
 247