drivers/clk/renesas/r8a77965-cpg-mssr.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * r8a77965 Clock Pulse Generator / Module Standby and Software Reset
   4  *
   5  * Copyright (C) 2018 Jacopo Mondi <jacopo+renesas@jmondi.org>
   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/r8a77965-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 = R8A77965_CLK_OSC,
  26
  27         /* External Input Clocks */
  28         CLK_EXTAL,
  29         CLK_EXTALR,
  30
  31         /* Internal Core Clocks */
  32         CLK_MAIN,
  33         CLK_PLL0,
  34         CLK_PLL1,
  35         CLK_PLL3,
  36         CLK_PLL4,
  37         CLK_PLL1_DIV2,
  38         CLK_PLL1_DIV4,
  39         CLK_S0,
  40         CLK_S1,
  41         CLK_S2,
  42         CLK_S3,
  43         CLK_SDSRC,
  44         CLK_SSPSRC,
  45         CLK_RINT,
  46
  47         /* Module Clocks */
  48         MOD_CLK_BASE
  49 };
  50
  51 static const struct cpg_core_clk r8a77965_core_clks[] __initconst = {
  52         /* External Clock Inputs */
  53         DEF_INPUT("extal",      CLK_EXTAL),
  54         DEF_INPUT("extalr",     CLK_EXTALR),
  55
  56         /* Internal Core Clocks */
  57         DEF_BASE(".main",       CLK_MAIN, CLK_TYPE_GEN3_MAIN, CLK_EXTAL),
  58         DEF_BASE(".pll0",       CLK_PLL0, CLK_TYPE_GEN3_PLL0, CLK_MAIN),
  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         DEF_BASE(".pll4",       CLK_PLL4, CLK_TYPE_GEN3_PLL4, CLK_MAIN),
  62
  63         DEF_FIXED(".pll1_div2", CLK_PLL1_DIV2,          CLK_PLL1,       2, 1),
  64         DEF_FIXED(".pll1_div4", CLK_PLL1_DIV4,          CLK_PLL1_DIV2,  2, 1),
  65         DEF_FIXED(".s0",        CLK_S0,                 CLK_PLL1_DIV2,  2, 1),
  66         DEF_FIXED(".s1",        CLK_S1,                 CLK_PLL1_DIV2,  3, 1),
  67         DEF_FIXED(".s2",        CLK_S2,                 CLK_PLL1_DIV2,  4, 1),
  68         DEF_FIXED(".s3",        CLK_S3,                 CLK_PLL1_DIV2,  6, 1),
  69         DEF_FIXED(".sdsrc",     CLK_SDSRC,              CLK_PLL1_DIV2,  2, 1),
  70
  71         /* Core Clock Outputs */
  72         DEF_BASE("z",           R8A77965_CLK_Z,         CLK_TYPE_GEN3_Z, CLK_PLL0),
  73         DEF_FIXED("ztr",        R8A77965_CLK_ZTR,       CLK_PLL1_DIV2,  6, 1),
  74         DEF_FIXED("ztrd2",      R8A77965_CLK_ZTRD2,     CLK_PLL1_DIV2,  12, 1),
  75         DEF_FIXED("zt",         R8A77965_CLK_ZT,        CLK_PLL1_DIV2,  4, 1),
  76         DEF_FIXED("zx",         R8A77965_CLK_ZX,        CLK_PLL1_DIV2,  2, 1),
  77         DEF_FIXED("s0d1",       R8A77965_CLK_S0D1,      CLK_S0,         1, 1),
  78         DEF_FIXED("s0d2",       R8A77965_CLK_S0D2,      CLK_S0,         2, 1),
  79         DEF_FIXED("s0d3",       R8A77965_CLK_S0D3,      CLK_S0,         3, 1),
  80         DEF_FIXED("s0d4",       R8A77965_CLK_S0D4,      CLK_S0,         4, 1),
  81         DEF_FIXED("s0d6",       R8A77965_CLK_S0D6,      CLK_S0,         6, 1),
  82         DEF_FIXED("s0d8",       R8A77965_CLK_S0D8,      CLK_S0,         8, 1),
  83         DEF_FIXED("s0d12",      R8A77965_CLK_S0D12,     CLK_S0,         12, 1),
  84         DEF_FIXED("s1d1",       R8A77965_CLK_S1D1,      CLK_S1,         1, 1),
  85         DEF_FIXED("s1d2",       R8A77965_CLK_S1D2,      CLK_S1,         2, 1),
  86         DEF_FIXED("s1d4",       R8A77965_CLK_S1D4,      CLK_S1,         4, 1),
  87         DEF_FIXED("s2d1",       R8A77965_CLK_S2D1,      CLK_S2,         1, 1),
  88         DEF_FIXED("s2d2",       R8A77965_CLK_S2D2,      CLK_S2,         2, 1),
  89         DEF_FIXED("s2d4",       R8A77965_CLK_S2D4,      CLK_S2,         4, 1),
  90         DEF_FIXED("s3d1",       R8A77965_CLK_S3D1,      CLK_S3,         1, 1),
  91         DEF_FIXED("s3d2",       R8A77965_CLK_S3D2,      CLK_S3,         2, 1),
  92         DEF_FIXED("s3d4",       R8A77965_CLK_S3D4,      CLK_S3,         4, 1),
  93
  94         DEF_GEN3_SD("sd0",      R8A77965_CLK_SD0,       CLK_SDSRC,      0x074),
  95         DEF_GEN3_SD("sd1",      R8A77965_CLK_SD1,       CLK_SDSRC,      0x078),
  96         DEF_GEN3_SD("sd2",      R8A77965_CLK_SD2,       CLK_SDSRC,      0x268),
  97         DEF_GEN3_SD("sd3",      R8A77965_CLK_SD3,       CLK_SDSRC,      0x26c),
  98
  99         DEF_FIXED("cl",         R8A77965_CLK_CL,        CLK_PLL1_DIV2,  48, 1),
 100         DEF_FIXED("cp",         R8A77965_CLK_CP,        CLK_EXTAL,      2, 1),
 101
 102         DEF_DIV6P1("canfd",     R8A77965_CLK_CANFD,     CLK_PLL1_DIV4,  0x244),
 103         DEF_DIV6P1("csi0",      R8A77965_CLK_CSI0,      CLK_PLL1_DIV4,  0x00c),
 104         DEF_DIV6P1("mso",       R8A77965_CLK_MSO,       CLK_PLL1_DIV4,  0x014),
 105         DEF_DIV6P1("hdmi",      R8A77965_CLK_HDMI,      CLK_PLL1_DIV4,  0x250),
 106
 107         DEF_DIV6_RO("osc",      R8A77965_CLK_OSC, CLK_EXTAL, CPG_RCKCR, 8),
 108         DEF_DIV6_RO("r_int",    CLK_RINT, CLK_EXTAL, CPG_RCKCR, 32),
 109
 110         DEF_BASE("r",           R8A77965_CLK_R, CLK_TYPE_GEN3_R, CLK_RINT),
 111 };
 112
 113 static const struct mssr_mod_clk r8a77965_mod_clks[] __initconst = {
 114         DEF_MOD("scif5",                202,    R8A77965_CLK_S3D4),
 115         DEF_MOD("scif4",                203,    R8A77965_CLK_S3D4),
 116         DEF_MOD("scif3",                204,    R8A77965_CLK_S3D4),
 117         DEF_MOD("scif1",                206,    R8A77965_CLK_S3D4),
 118         DEF_MOD("scif0",                207,    R8A77965_CLK_S3D4),
 119         DEF_MOD("sys-dmac2",            217,    R8A77965_CLK_S0D3),
 120         DEF_MOD("sys-dmac1",            218,    R8A77965_CLK_S0D3),
 121         DEF_MOD("sys-dmac0",            219,    R8A77965_CLK_S0D3),
 122
 123         DEF_MOD("cmt3",                 300,    R8A77965_CLK_R),
 124         DEF_MOD("cmt2",                 301,    R8A77965_CLK_R),
 125         DEF_MOD("cmt1",                 302,    R8A77965_CLK_R),
 126         DEF_MOD("cmt0",                 303,    R8A77965_CLK_R),
 127         DEF_MOD("scif2",                310,    R8A77965_CLK_S3D4),
 128         DEF_MOD("sdif3",                311,    R8A77965_CLK_SD3),
 129         DEF_MOD("sdif2",                312,    R8A77965_CLK_SD2),
 130         DEF_MOD("sdif1",                313,    R8A77965_CLK_SD1),
 131         DEF_MOD("sdif0",                314,    R8A77965_CLK_SD0),
 132         DEF_MOD("pcie1",                318,    R8A77965_CLK_S3D1),
 133         DEF_MOD("pcie0",                319,    R8A77965_CLK_S3D1),
 134         DEF_MOD("usb3-if0",             328,    R8A77965_CLK_S3D1),
 135         DEF_MOD("usb-dmac0",            330,    R8A77965_CLK_S3D1),
 136         DEF_MOD("usb-dmac1",            331,    R8A77965_CLK_S3D1),
 137
 138         DEF_MOD("rwdt",                 402,    R8A77965_CLK_R),
 139         DEF_MOD("intc-ex",              407,    R8A77965_CLK_CP),
 140         DEF_MOD("intc-ap",              408,    R8A77965_CLK_S0D3),
 141
 142         DEF_MOD("audmac1",              501,    R8A77965_CLK_S0D3),
 143         DEF_MOD("audmac0",              502,    R8A77965_CLK_S0D3),
 144         DEF_MOD("drif7",                508,    R8A77965_CLK_S3D2),
 145         DEF_MOD("drif6",                509,    R8A77965_CLK_S3D2),
 146         DEF_MOD("drif5",                510,    R8A77965_CLK_S3D2),
 147         DEF_MOD("drif4",                511,    R8A77965_CLK_S3D2),
 148         DEF_MOD("drif3",                512,    R8A77965_CLK_S3D2),
 149         DEF_MOD("drif2",                513,    R8A77965_CLK_S3D2),
 150         DEF_MOD("drif1",                514,    R8A77965_CLK_S3D2),
 151         DEF_MOD("drif0",                515,    R8A77965_CLK_S3D2),
 152         DEF_MOD("hscif4",               516,    R8A77965_CLK_S3D1),
 153         DEF_MOD("hscif3",               517,    R8A77965_CLK_S3D1),
 154         DEF_MOD("hscif2",               518,    R8A77965_CLK_S3D1),
 155         DEF_MOD("hscif1",               519,    R8A77965_CLK_S3D1),
 156         DEF_MOD("hscif0",               520,    R8A77965_CLK_S3D1),
 157         DEF_MOD("thermal",              522,    R8A77965_CLK_CP),
 158         DEF_MOD("pwm",                  523,    R8A77965_CLK_S0D12),
 159
 160         DEF_MOD("fcpvd1",               602,    R8A77965_CLK_S0D2),
 161         DEF_MOD("fcpvd0",               603,    R8A77965_CLK_S0D2),
 162         DEF_MOD("fcpvb0",               607,    R8A77965_CLK_S0D1),
 163         DEF_MOD("fcpvi0",               611,    R8A77965_CLK_S0D1),
 164         DEF_MOD("fcpf0",                615,    R8A77965_CLK_S0D1),
 165         DEF_MOD("fcpcs",                619,    R8A77965_CLK_S0D2),
 166         DEF_MOD("vspd1",                622,    R8A77965_CLK_S0D2),
 167         DEF_MOD("vspd0",                623,    R8A77965_CLK_S0D2),
 168         DEF_MOD("vspb",                 626,    R8A77965_CLK_S0D1),
 169         DEF_MOD("vspi0",                631,    R8A77965_CLK_S0D1),
 170
 171         DEF_MOD("ehci1",                702,    R8A77965_CLK_S3D4),
 172         DEF_MOD("ehci0",                703,    R8A77965_CLK_S3D4),
 173         DEF_MOD("hsusb",                704,    R8A77965_CLK_S3D4),
 174         DEF_MOD("csi20",                714,    R8A77965_CLK_CSI0),
 175         DEF_MOD("csi40",                716,    R8A77965_CLK_CSI0),
 176         DEF_MOD("du3",                  721,    R8A77965_CLK_S2D1),
 177         DEF_MOD("du1",                  723,    R8A77965_CLK_S2D1),
 178         DEF_MOD("du0",                  724,    R8A77965_CLK_S2D1),
 179         DEF_MOD("lvds",                 727,    R8A77965_CLK_S2D1),
 180         DEF_MOD("hdmi0",                729,    R8A77965_CLK_HDMI),
 181
 182         DEF_MOD("vin7",                 804,    R8A77965_CLK_S0D2),
 183         DEF_MOD("vin6",                 805,    R8A77965_CLK_S0D2),
 184         DEF_MOD("vin5",                 806,    R8A77965_CLK_S0D2),
 185         DEF_MOD("vin4",                 807,    R8A77965_CLK_S0D2),
 186         DEF_MOD("vin3",                 808,    R8A77965_CLK_S0D2),
 187         DEF_MOD("vin2",                 809,    R8A77965_CLK_S0D2),
 188         DEF_MOD("vin1",                 810,    R8A77965_CLK_S0D2),
 189         DEF_MOD("vin0",                 811,    R8A77965_CLK_S0D2),
 190         DEF_MOD("etheravb",             812,    R8A77965_CLK_S0D6),
 191         DEF_MOD("imr1",                 822,    R8A77965_CLK_S0D2),
 192         DEF_MOD("imr0",                 823,    R8A77965_CLK_S0D2),
 193
 194         DEF_MOD("gpio7",                905,    R8A77965_CLK_S3D4),
 195         DEF_MOD("gpio6",                906,    R8A77965_CLK_S3D4),
 196         DEF_MOD("gpio5",                907,    R8A77965_CLK_S3D4),
 197         DEF_MOD("gpio4",                908,    R8A77965_CLK_S3D4),
 198         DEF_MOD("gpio3",                909,    R8A77965_CLK_S3D4),
 199         DEF_MOD("gpio2",                910,    R8A77965_CLK_S3D4),
 200         DEF_MOD("gpio1",                911,    R8A77965_CLK_S3D4),
 201         DEF_MOD("gpio0",                912,    R8A77965_CLK_S3D4),
 202         DEF_MOD("can-fd",               914,    R8A77965_CLK_S3D2),
 203         DEF_MOD("can-if1",              915,    R8A77965_CLK_S3D4),
 204         DEF_MOD("can-if0",              916,    R8A77965_CLK_S3D4),
 205         DEF_MOD("i2c6",                 918,    R8A77965_CLK_S0D6),
 206         DEF_MOD("i2c5",                 919,    R8A77965_CLK_S0D6),
 207         DEF_MOD("i2c-dvfs",             926,    R8A77965_CLK_CP),
 208         DEF_MOD("i2c4",                 927,    R8A77965_CLK_S0D6),
 209         DEF_MOD("i2c3",                 928,    R8A77965_CLK_S0D6),
 210         DEF_MOD("i2c2",                 929,    R8A77965_CLK_S3D2),
 211         DEF_MOD("i2c1",                 930,    R8A77965_CLK_S3D2),
 212         DEF_MOD("i2c0",                 931,    R8A77965_CLK_S3D2),
 213
 214         DEF_MOD("ssi-all",              1005,   R8A77965_CLK_S3D4),
 215         DEF_MOD("ssi9",                 1006,   MOD_CLK_ID(1005)),
 216         DEF_MOD("ssi8",                 1007,   MOD_CLK_ID(1005)),
 217         DEF_MOD("ssi7",                 1008,   MOD_CLK_ID(1005)),
 218         DEF_MOD("ssi6",                 1009,   MOD_CLK_ID(1005)),
 219         DEF_MOD("ssi5",                 1010,   MOD_CLK_ID(1005)),
 220         DEF_MOD("ssi4",                 1011,   MOD_CLK_ID(1005)),
 221         DEF_MOD("ssi3",                 1012,   MOD_CLK_ID(1005)),
 222         DEF_MOD("ssi2",                 1013,   MOD_CLK_ID(1005)),
 223         DEF_MOD("ssi1",                 1014,   MOD_CLK_ID(1005)),
 224         DEF_MOD("ssi0",                 1015,   MOD_CLK_ID(1005)),
 225         DEF_MOD("scu-all",              1017,   R8A77965_CLK_S3D4),
 226         DEF_MOD("scu-dvc1",             1018,   MOD_CLK_ID(1017)),
 227         DEF_MOD("scu-dvc0",             1019,   MOD_CLK_ID(1017)),
 228         DEF_MOD("scu-ctu1-mix1",        1020,   MOD_CLK_ID(1017)),
 229         DEF_MOD("scu-ctu0-mix0",        1021,   MOD_CLK_ID(1017)),
 230         DEF_MOD("scu-src9",             1022,   MOD_CLK_ID(1017)),
 231         DEF_MOD("scu-src8",             1023,   MOD_CLK_ID(1017)),
 232         DEF_MOD("scu-src7",             1024,   MOD_CLK_ID(1017)),
 233         DEF_MOD("scu-src6",             1025,   MOD_CLK_ID(1017)),
 234         DEF_MOD("scu-src5",             1026,   MOD_CLK_ID(1017)),
 235         DEF_MOD("scu-src4",             1027,   MOD_CLK_ID(1017)),
 236         DEF_MOD("scu-src3",             1028,   MOD_CLK_ID(1017)),
 237         DEF_MOD("scu-src2",             1029,   MOD_CLK_ID(1017)),
 238         DEF_MOD("scu-src1",             1030,   MOD_CLK_ID(1017)),
 239         DEF_MOD("scu-src0",             1031,   MOD_CLK_ID(1017)),
 240 };
 241
 242 static const unsigned int r8a77965_crit_mod_clks[] __initconst = {
 243         MOD_CLK_ID(408),        /* INTC-AP (GIC) */
 244 };
 245
 246 /*
 247  * CPG Clock Data
 248  */
 249
 250 /*
 251  *   MD         EXTAL           PLL0    PLL1    PLL3    PLL4
 252  * 14 13 19 17  (MHz)
 253  *-----------------------------------------------------------
 254  * 0  0  0  0   16.66 x 1       x180    x192    x192    x144
 255  * 0  0  0  1   16.66 x 1       x180    x192    x128    x144
 256  * 0  0  1  0   Prohibited setting
 257  * 0  0  1  1   16.66 x 1       x180    x192    x192    x144
 258  * 0  1  0  0   20    x 1       x150    x160    x160    x120
 259  * 0  1  0  1   20    x 1       x150    x160    x106    x120
 260  * 0  1  1  0   Prohibited setting
 261  * 0  1  1  1   20    x 1       x150    x160    x160    x120
 262  * 1  0  0  0   25    x 1       x120    x128    x128    x96
 263  * 1  0  0  1   25    x 1       x120    x128    x84     x96
 264  * 1  0  1  0   Prohibited setting
 265  * 1  0  1  1   25    x 1       x120    x128    x128    x96
 266  * 1  1  0  0   33.33 / 2       x180    x192    x192    x144
 267  * 1  1  0  1   33.33 / 2       x180    x192    x128    x144
 268  * 1  1  1  0   Prohibited setting
 269  * 1  1  1  1   33.33 / 2       x180    x192    x192    x144
 270  */
 271 #define CPG_PLL_CONFIG_INDEX(md)        ((((md) & BIT(14)) >> 11) | \
 272                                          (((md) & BIT(13)) >> 11) | \
 273                                          (((md) & BIT(19)) >> 18) | \
 274                                          (((md) & BIT(17)) >> 17))
 275
 276 static const struct rcar_gen3_cpg_pll_config cpg_pll_configs[16] __initconst = {
 277         /* EXTAL div    PLL1 mult/div   PLL3 mult/div */
 278         { 1,            192,    1,      192,    1,      },
 279         { 1,            192,    1,      128,    1,      },
 280         { 0, /* Prohibited setting */                   },
 281         { 1,            192,    1,      192,    1,      },
 282         { 1,            160,    1,      160,    1,      },
 283         { 1,            160,    1,      106,    1,      },
 284         { 0, /* Prohibited setting */                   },
 285         { 1,            160,    1,      160,    1,      },
 286         { 1,            128,    1,      128,    1,      },
 287         { 1,            128,    1,      84,     1,      },
 288         { 0, /* Prohibited setting */                   },
 289         { 1,            128,    1,      128,    1,      },
 290         { 2,            192,    1,      192,    1,      },
 291         { 2,            192,    1,      128,    1,      },
 292         { 0, /* Prohibited setting */                   },
 293         { 2,            192,    1,      192,    1,      },
 294 };
 295
 296 static int __init r8a77965_cpg_mssr_init(struct device *dev)
 297 {
 298         const struct rcar_gen3_cpg_pll_config *cpg_pll_config;
 299         u32 cpg_mode;
 300         int error;
 301
 302         error = rcar_rst_read_mode_pins(&cpg_mode);
 303         if (error)
 304                 return error;
 305
 306         cpg_pll_config = &cpg_pll_configs[CPG_PLL_CONFIG_INDEX(cpg_mode)];
 307         if (!cpg_pll_config->extal_div) {
 308                 dev_err(dev, "Prohibited setting (cpg_mode=0x%x)\n", cpg_mode);
 309                 return -EINVAL;
 310         }
 311
 312         return rcar_gen3_cpg_init(cpg_pll_config, CLK_EXTALR, cpg_mode);
 313 };
 314
 315 const struct cpg_mssr_info r8a77965_cpg_mssr_info __initconst = {
 316         /* Core Clocks */
 317         .core_clks              = r8a77965_core_clks,
 318         .num_core_clks          = ARRAY_SIZE(r8a77965_core_clks),
 319         .last_dt_core_clk       = LAST_DT_CORE_CLK,
 320         .num_total_core_clks    = MOD_CLK_BASE,
 321
 322         /* Module Clocks */
 323         .mod_clks               = r8a77965_mod_clks,
 324         .num_mod_clks           = ARRAY_SIZE(r8a77965_mod_clks),
 325         .num_hw_mod_clks        = 12 * 32,
 326
 327         /* Critical Module Clocks */
 328         .crit_mod_clks          = r8a77965_crit_mod_clks,
 329         .num_crit_mod_clks      = ARRAY_SIZE(r8a77965_crit_mod_clks),
 330
 331         /* Callbacks */
 332         .init                   = r8a77965_cpg_mssr_init,
 333         .cpg_clk_register       = rcar_gen3_cpg_clk_register,
 334 };