drivers/clk/renesas/r8a77990-cpg-mssr.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * r8a77990 Clock Pulse Generator / Module Standby and Software Reset
   4  *
   5  * Copyright (C) 2018-2019 Renesas Electronics Corp.
   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/r8a77990-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 = R8A77990_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_PLL0D4,
  36         CLK_PLL0D6,
  37         CLK_PLL0D8,
  38         CLK_PLL0D20,
  39         CLK_PLL0D24,
  40         CLK_PLL1D2,
  41         CLK_PE,
  42         CLK_S0,
  43         CLK_S1,
  44         CLK_S2,
  45         CLK_S3,
  46         CLK_SDSRC,
  47         CLK_RINT,
  48         CLK_OCO,
  49
  50         /* Module Clocks */
  51         MOD_CLK_BASE
  52 };
  53
  54 static const struct cpg_core_clk r8a77990_core_clks[] __initconst = {
  55         /* External Clock Inputs */
  56         DEF_INPUT("extal",     CLK_EXTAL),
  57
  58         /* Internal Core Clocks */
  59         DEF_BASE(".main",      CLK_MAIN, CLK_TYPE_GEN3_MAIN,       CLK_EXTAL),
  60         DEF_BASE(".pll1",      CLK_PLL1, CLK_TYPE_GEN3_PLL1,       CLK_MAIN),
  61         DEF_BASE(".pll3",      CLK_PLL3, CLK_TYPE_GEN3_PLL3,       CLK_MAIN),
  62
  63         DEF_FIXED(".pll0",     CLK_PLL0,           CLK_MAIN,       1, 100),
  64         DEF_FIXED(".pll0d4",   CLK_PLL0D4,         CLK_PLL0,       4, 1),
  65         DEF_FIXED(".pll0d6",   CLK_PLL0D6,         CLK_PLL0,       6, 1),
  66         DEF_FIXED(".pll0d8",   CLK_PLL0D8,         CLK_PLL0,       8, 1),
  67         DEF_FIXED(".pll0d20",  CLK_PLL0D20,        CLK_PLL0,      20, 1),
  68         DEF_FIXED(".pll0d24",  CLK_PLL0D24,        CLK_PLL0,      24, 1),
  69         DEF_FIXED(".pll1d2",   CLK_PLL1D2,         CLK_PLL1,       2, 1),
  70         DEF_FIXED(".pe",       CLK_PE,             CLK_PLL0D20,    1, 1),
  71         DEF_FIXED(".s0",       CLK_S0,             CLK_PLL1,       2, 1),
  72         DEF_FIXED(".s1",       CLK_S1,             CLK_PLL1,       3, 1),
  73         DEF_FIXED(".s2",       CLK_S2,             CLK_PLL1,       4, 1),
  74         DEF_FIXED(".s3",       CLK_S3,             CLK_PLL1,       6, 1),
  75         DEF_FIXED(".sdsrc",    CLK_SDSRC,          CLK_PLL1,       2, 1),
  76
  77         DEF_DIV6_RO(".r",      CLK_RINT,           CLK_EXTAL, CPG_RCKCR, 32),
  78
  79         DEF_RATE(".oco",       CLK_OCO,            8 * 1000 * 1000),
  80
  81         /* Core Clock Outputs */
  82         DEF_FIXED("za2",       R8A77990_CLK_ZA2,   CLK_PLL0D24,    1, 1),
  83         DEF_FIXED("za8",       R8A77990_CLK_ZA8,   CLK_PLL0D8,     1, 1),
  84         DEF_GEN3_Z("z2",       R8A77990_CLK_Z2,    CLK_TYPE_GEN3_Z, CLK_PLL0, 4, 8),
  85         DEF_FIXED("ztr",       R8A77990_CLK_ZTR,   CLK_PLL1,       6, 1),
  86         DEF_FIXED("zt",        R8A77990_CLK_ZT,    CLK_PLL1,       4, 1),
  87         DEF_FIXED("zx",        R8A77990_CLK_ZX,    CLK_PLL1,       3, 1),
  88         DEF_FIXED("s0d1",      R8A77990_CLK_S0D1,  CLK_S0,         1, 1),
  89         DEF_FIXED("s0d3",      R8A77990_CLK_S0D3,  CLK_S0,         3, 1),
  90         DEF_FIXED("s0d6",      R8A77990_CLK_S0D6,  CLK_S0,         6, 1),
  91         DEF_FIXED("s0d12",     R8A77990_CLK_S0D12, CLK_S0,        12, 1),
  92         DEF_FIXED("s0d24",     R8A77990_CLK_S0D24, CLK_S0,        24, 1),
  93         DEF_FIXED("s1d1",      R8A77990_CLK_S1D1,  CLK_S1,         1, 1),
  94         DEF_FIXED("s1d2",      R8A77990_CLK_S1D2,  CLK_S1,         2, 1),
  95         DEF_FIXED("s1d4",      R8A77990_CLK_S1D4,  CLK_S1,         4, 1),
  96         DEF_FIXED("s2d1",      R8A77990_CLK_S2D1,  CLK_S2,         1, 1),
  97         DEF_FIXED("s2d2",      R8A77990_CLK_S2D2,  CLK_S2,         2, 1),
  98         DEF_FIXED("s2d4",      R8A77990_CLK_S2D4,  CLK_S2,         4, 1),
  99         DEF_FIXED("s3d1",      R8A77990_CLK_S3D1,  CLK_S3,         1, 1),
 100         DEF_FIXED("s3d2",      R8A77990_CLK_S3D2,  CLK_S3,         2, 1),
 101         DEF_FIXED("s3d4",      R8A77990_CLK_S3D4,  CLK_S3,         4, 1),
 102
 103         DEF_GEN3_SD("sd0",     R8A77990_CLK_SD0,   CLK_SDSRC,     0x0074),
 104         DEF_GEN3_SD("sd1",     R8A77990_CLK_SD1,   CLK_SDSRC,     0x0078),
 105         DEF_GEN3_SD("sd3",     R8A77990_CLK_SD3,   CLK_SDSRC,     0x026c),
 106
 107         DEF_FIXED("cl",        R8A77990_CLK_CL,    CLK_PLL1,      48, 1),
 108         DEF_FIXED("cp",        R8A77990_CLK_CP,    CLK_EXTAL,      2, 1),
 109         DEF_FIXED("cpex",      R8A77990_CLK_CPEX,  CLK_EXTAL,      4, 1),
 110
 111         DEF_DIV6_RO("osc",     R8A77990_CLK_OSC,   CLK_EXTAL, CPG_RCKCR,  8),
 112
 113         DEF_GEN3_PE("s0d6c",   R8A77990_CLK_S0D6C, CLK_S0, 6, CLK_PE, 2),
 114         DEF_GEN3_PE("s3d1c",   R8A77990_CLK_S3D1C, CLK_S3, 1, CLK_PE, 1),
 115         DEF_GEN3_PE("s3d2c",   R8A77990_CLK_S3D2C, CLK_S3, 2, CLK_PE, 2),
 116         DEF_GEN3_PE("s3d4c",   R8A77990_CLK_S3D4C, CLK_S3, 4, CLK_PE, 4),
 117
 118         DEF_DIV6P1("canfd",    R8A77990_CLK_CANFD, CLK_PLL0D6, 0x244),
 119         DEF_DIV6P1("csi0",     R8A77990_CLK_CSI0,  CLK_PLL1D2, 0x00c),
 120         DEF_DIV6P1("mso",      R8A77990_CLK_MSO,   CLK_PLL1D2, 0x014),
 121
 122         DEF_GEN3_RCKSEL("r",   R8A77990_CLK_R, CLK_RINT, 1, CLK_OCO, 61 * 4),
 123 };
 124
 125 static const struct mssr_mod_clk r8a77990_mod_clks[] __initconst = {
 126         DEF_MOD("scif5",                 202,   R8A77990_CLK_S3D4C),
 127         DEF_MOD("scif4",                 203,   R8A77990_CLK_S3D4C),
 128         DEF_MOD("scif3",                 204,   R8A77990_CLK_S3D4C),
 129         DEF_MOD("scif1",                 206,   R8A77990_CLK_S3D4C),
 130         DEF_MOD("scif0",                 207,   R8A77990_CLK_S3D4C),
 131         DEF_MOD("msiof3",                208,   R8A77990_CLK_MSO),
 132         DEF_MOD("msiof2",                209,   R8A77990_CLK_MSO),
 133         DEF_MOD("msiof1",                210,   R8A77990_CLK_MSO),
 134         DEF_MOD("msiof0",                211,   R8A77990_CLK_MSO),
 135         DEF_MOD("sys-dmac2",             217,   R8A77990_CLK_S3D1),
 136         DEF_MOD("sys-dmac1",             218,   R8A77990_CLK_S3D1),
 137         DEF_MOD("sys-dmac0",             219,   R8A77990_CLK_S3D1),
 138
 139         DEF_MOD("cmt3",                  300,   R8A77990_CLK_R),
 140         DEF_MOD("cmt2",                  301,   R8A77990_CLK_R),
 141         DEF_MOD("cmt1",                  302,   R8A77990_CLK_R),
 142         DEF_MOD("cmt0",                  303,   R8A77990_CLK_R),
 143         DEF_MOD("scif2",                 310,   R8A77990_CLK_S3D4C),
 144         DEF_MOD("sdif3",                 311,   R8A77990_CLK_SD3),
 145         DEF_MOD("sdif1",                 313,   R8A77990_CLK_SD1),
 146         DEF_MOD("sdif0",                 314,   R8A77990_CLK_SD0),
 147         DEF_MOD("pcie0",                 319,   R8A77990_CLK_S3D1),
 148         DEF_MOD("usb3-if0",              328,   R8A77990_CLK_S3D1),
 149         DEF_MOD("usb-dmac0",             330,   R8A77990_CLK_S3D1),
 150         DEF_MOD("usb-dmac1",             331,   R8A77990_CLK_S3D1),
 151
 152         DEF_MOD("rwdt",                  402,   R8A77990_CLK_R),
 153         DEF_MOD("intc-ex",               407,   R8A77990_CLK_CP),
 154         DEF_MOD("intc-ap",               408,   R8A77990_CLK_S0D3),
 155
 156         DEF_MOD("audmac0",               502,   R8A77990_CLK_S1D2),
 157         DEF_MOD("drif31",                508,   R8A77990_CLK_S3D2),
 158         DEF_MOD("drif30",                509,   R8A77990_CLK_S3D2),
 159         DEF_MOD("drif21",                510,   R8A77990_CLK_S3D2),
 160         DEF_MOD("drif20",                511,   R8A77990_CLK_S3D2),
 161         DEF_MOD("drif11",                512,   R8A77990_CLK_S3D2),
 162         DEF_MOD("drif10",                513,   R8A77990_CLK_S3D2),
 163         DEF_MOD("drif01",                514,   R8A77990_CLK_S3D2),
 164         DEF_MOD("drif00",                515,   R8A77990_CLK_S3D2),
 165         DEF_MOD("hscif4",                516,   R8A77990_CLK_S3D1C),
 166         DEF_MOD("hscif3",                517,   R8A77990_CLK_S3D1C),
 167         DEF_MOD("hscif2",                518,   R8A77990_CLK_S3D1C),
 168         DEF_MOD("hscif1",                519,   R8A77990_CLK_S3D1C),
 169         DEF_MOD("hscif0",                520,   R8A77990_CLK_S3D1C),
 170         DEF_MOD("thermal",               522,   R8A77990_CLK_CP),
 171         DEF_MOD("pwm",                   523,   R8A77990_CLK_S3D4C),
 172
 173         DEF_MOD("fcpvd1",                602,   R8A77990_CLK_S1D2),
 174         DEF_MOD("fcpvd0",                603,   R8A77990_CLK_S1D2),
 175         DEF_MOD("fcpvb0",                607,   R8A77990_CLK_S0D1),
 176         DEF_MOD("fcpvi0",                611,   R8A77990_CLK_S0D1),
 177         DEF_MOD("fcpf0",                 615,   R8A77990_CLK_S0D1),
 178         DEF_MOD("fcpcs",                 619,   R8A77990_CLK_S0D1),
 179         DEF_MOD("vspd1",                 622,   R8A77990_CLK_S1D2),
 180         DEF_MOD("vspd0",                 623,   R8A77990_CLK_S1D2),
 181         DEF_MOD("vspb",                  626,   R8A77990_CLK_S0D1),
 182         DEF_MOD("vspi0",                 631,   R8A77990_CLK_S0D1),
 183
 184         DEF_MOD("ehci0",                 703,   R8A77990_CLK_S3D2),
 185         DEF_MOD("hsusb",                 704,   R8A77990_CLK_S3D2),
 186         DEF_MOD("cmm1",                  710,   R8A77990_CLK_S1D1),
 187         DEF_MOD("cmm0",                  711,   R8A77990_CLK_S1D1),
 188         DEF_MOD("csi40",                 716,   R8A77990_CLK_CSI0),
 189         DEF_MOD("du1",                   723,   R8A77990_CLK_S1D1),
 190         DEF_MOD("du0",                   724,   R8A77990_CLK_S1D1),
 191         DEF_MOD("lvds",                  727,   R8A77990_CLK_S2D1),
 192
 193         DEF_MOD("vin5",                  806,   R8A77990_CLK_S1D2),
 194         DEF_MOD("vin4",                  807,   R8A77990_CLK_S1D2),
 195         DEF_MOD("etheravb",              812,   R8A77990_CLK_S3D2),
 196
 197         DEF_MOD("gpio6",                 906,   R8A77990_CLK_S3D4),
 198         DEF_MOD("gpio5",                 907,   R8A77990_CLK_S3D4),
 199         DEF_MOD("gpio4",                 908,   R8A77990_CLK_S3D4),
 200         DEF_MOD("gpio3",                 909,   R8A77990_CLK_S3D4),
 201         DEF_MOD("gpio2",                 910,   R8A77990_CLK_S3D4),
 202         DEF_MOD("gpio1",                 911,   R8A77990_CLK_S3D4),
 203         DEF_MOD("gpio0",                 912,   R8A77990_CLK_S3D4),
 204         DEF_MOD("can-fd",                914,   R8A77990_CLK_S3D2),
 205         DEF_MOD("can-if1",               915,   R8A77990_CLK_S3D4),
 206         DEF_MOD("can-if0",               916,   R8A77990_CLK_S3D4),
 207         DEF_MOD("i2c6",                  918,   R8A77990_CLK_S3D2),
 208         DEF_MOD("i2c5",                  919,   R8A77990_CLK_S3D2),
 209         DEF_MOD("i2c-dvfs",              926,   R8A77990_CLK_CP),
 210         DEF_MOD("i2c4",                  927,   R8A77990_CLK_S3D2),
 211         DEF_MOD("i2c3",                  928,   R8A77990_CLK_S3D2),
 212         DEF_MOD("i2c2",                  929,   R8A77990_CLK_S3D2),
 213         DEF_MOD("i2c1",                  930,   R8A77990_CLK_S3D2),
 214         DEF_MOD("i2c0",                  931,   R8A77990_CLK_S3D2),
 215
 216         DEF_MOD("i2c7",                 1003,   R8A77990_CLK_S3D2),
 217         DEF_MOD("ssi-all",              1005,   R8A77990_CLK_S3D4),
 218         DEF_MOD("ssi9",                 1006,   MOD_CLK_ID(1005)),
 219         DEF_MOD("ssi8",                 1007,   MOD_CLK_ID(1005)),
 220         DEF_MOD("ssi7",                 1008,   MOD_CLK_ID(1005)),
 221         DEF_MOD("ssi6",                 1009,   MOD_CLK_ID(1005)),
 222         DEF_MOD("ssi5",                 1010,   MOD_CLK_ID(1005)),
 223         DEF_MOD("ssi4",                 1011,   MOD_CLK_ID(1005)),
 224         DEF_MOD("ssi3",                 1012,   MOD_CLK_ID(1005)),
 225         DEF_MOD("ssi2",                 1013,   MOD_CLK_ID(1005)),
 226         DEF_MOD("ssi1",                 1014,   MOD_CLK_ID(1005)),
 227         DEF_MOD("ssi0",                 1015,   MOD_CLK_ID(1005)),
 228         DEF_MOD("scu-all",              1017,   R8A77990_CLK_S3D4),
 229         DEF_MOD("scu-dvc1",             1018,   MOD_CLK_ID(1017)),
 230         DEF_MOD("scu-dvc0",             1019,   MOD_CLK_ID(1017)),
 231         DEF_MOD("scu-ctu1-mix1",        1020,   MOD_CLK_ID(1017)),
 232         DEF_MOD("scu-ctu0-mix0",        1021,   MOD_CLK_ID(1017)),
 233         DEF_MOD("scu-src9",             1022,   MOD_CLK_ID(1017)),
 234         DEF_MOD("scu-src8",             1023,   MOD_CLK_ID(1017)),
 235         DEF_MOD("scu-src7",             1024,   MOD_CLK_ID(1017)),
 236         DEF_MOD("scu-src6",             1025,   MOD_CLK_ID(1017)),
 237         DEF_MOD("scu-src5",             1026,   MOD_CLK_ID(1017)),
 238         DEF_MOD("scu-src4",             1027,   MOD_CLK_ID(1017)),
 239         DEF_MOD("scu-src3",             1028,   MOD_CLK_ID(1017)),
 240         DEF_MOD("scu-src2",             1029,   MOD_CLK_ID(1017)),
 241         DEF_MOD("scu-src1",             1030,   MOD_CLK_ID(1017)),
 242         DEF_MOD("scu-src0",             1031,   MOD_CLK_ID(1017)),
 243 };
 244
 245 static const unsigned int r8a77990_crit_mod_clks[] __initconst = {
 246         MOD_CLK_ID(408),        /* INTC-AP (GIC) */
 247 };
 248
 249 /*
 250  * CPG Clock Data
 251  */
 252
 253 /*
 254  * MD19         EXTAL (MHz)     PLL0            PLL1            PLL3
 255  *--------------------------------------------------------------------
 256  * 0            48 x 1          x100/1          x100/3          x100/3
 257  * 1            48 x 1          x100/1          x100/3           x58/3
 258  */
 259 #define CPG_PLL_CONFIG_INDEX(md)        (((md) & BIT(19)) >> 19)
 260
 261 static const struct rcar_gen3_cpg_pll_config cpg_pll_configs[2] __initconst = {
 262         /* EXTAL div    PLL1 mult/div   PLL3 mult/div */
 263         { 1,            100,    3,      100,    3,      },
 264         { 1,            100,    3,       58,    3,      },
 265 };
 266
 267 static int __init r8a77990_cpg_mssr_init(struct device *dev)
 268 {
 269         const struct rcar_gen3_cpg_pll_config *cpg_pll_config;
 270         u32 cpg_mode;
 271         int error;
 272
 273         error = rcar_rst_read_mode_pins(&cpg_mode);
 274         if (error)
 275                 return error;
 276
 277         cpg_pll_config = &cpg_pll_configs[CPG_PLL_CONFIG_INDEX(cpg_mode)];
 278
 279         return rcar_gen3_cpg_init(cpg_pll_config, 0, cpg_mode);
 280 }
 281
 282 const struct cpg_mssr_info r8a77990_cpg_mssr_info __initconst = {
 283         /* Core Clocks */
 284         .core_clks = r8a77990_core_clks,
 285         .num_core_clks = ARRAY_SIZE(r8a77990_core_clks),
 286         .last_dt_core_clk = LAST_DT_CORE_CLK,
 287         .num_total_core_clks = MOD_CLK_BASE,
 288
 289         /* Module Clocks */
 290         .mod_clks = r8a77990_mod_clks,
 291         .num_mod_clks = ARRAY_SIZE(r8a77990_mod_clks),
 292         .num_hw_mod_clks = 12 * 32,
 293
 294         /* Critical Module Clocks */
 295         .crit_mod_clks = r8a77990_crit_mod_clks,
 296         .num_crit_mod_clks = ARRAY_SIZE(r8a77990_crit_mod_clks),
 297
 298         /* Callbacks */
 299         .init = r8a77990_cpg_mssr_init,
 300         .cpg_clk_register = rcar_gen3_cpg_clk_register,
 301 };