drivers/clk/renesas/r8a7745-cpg-mssr.c

   1 /*
   2  * r8a7745 Clock Pulse Generator / Module Standby and Software Reset
   3  *
   4  * Copyright (C) 2016 Cogent Embedded Inc.
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License version 2 as published
   8  * by the Free Software Foundation; of the License.
   9  */
  10
  11 #include <linux/device.h>
  12 #include <linux/init.h>
  13 #include <linux/kernel.h>
  14 #include <linux/soc/renesas/rcar-rst.h>
  15
  16 #include <dt-bindings/clock/r8a7745-cpg-mssr.h>
  17
  18 #include "renesas-cpg-mssr.h"
  19 #include "rcar-gen2-cpg.h"
  20
  21 enum clk_ids {
  22         /* Core Clock Outputs exported to DT */
  23         LAST_DT_CORE_CLK = R8A7745_CLK_OSC,
  24
  25         /* External Input Clocks */
  26         CLK_EXTAL,
  27         CLK_USB_EXTAL,
  28
  29         /* Internal Core Clocks */
  30         CLK_MAIN,
  31         CLK_PLL0,
  32         CLK_PLL1,
  33         CLK_PLL3,
  34         CLK_PLL1_DIV2,
  35
  36         /* Module Clocks */
  37         MOD_CLK_BASE
  38 };
  39
  40 static const struct cpg_core_clk r8a7745_core_clks[] __initconst = {
  41         /* External Clock Inputs */
  42         DEF_INPUT("extal",      CLK_EXTAL),
  43         DEF_INPUT("usb_extal",  CLK_USB_EXTAL),
  44
  45         /* Internal Core Clocks */
  46         DEF_BASE(".main",       CLK_MAIN, CLK_TYPE_GEN2_MAIN, CLK_EXTAL),
  47         DEF_BASE(".pll0",       CLK_PLL0, CLK_TYPE_GEN2_PLL0, CLK_MAIN),
  48         DEF_BASE(".pll1",       CLK_PLL1, CLK_TYPE_GEN2_PLL1, CLK_MAIN),
  49         DEF_BASE(".pll3",       CLK_PLL3, CLK_TYPE_GEN2_PLL3, CLK_MAIN),
  50
  51         DEF_FIXED(".pll1_div2", CLK_PLL1_DIV2, CLK_PLL1, 2, 1),
  52
  53         /* Core Clock Outputs */
  54         DEF_BASE("lb",   R8A7745_CLK_LB,   CLK_TYPE_GEN2_LB,    CLK_PLL1),
  55         DEF_BASE("sdh",  R8A7745_CLK_SDH,  CLK_TYPE_GEN2_SDH,   CLK_PLL1),
  56         DEF_BASE("sd0",  R8A7745_CLK_SD0,  CLK_TYPE_GEN2_SD0,   CLK_PLL1),
  57         DEF_BASE("qspi", R8A7745_CLK_QSPI, CLK_TYPE_GEN2_QSPI,  CLK_PLL1_DIV2),
  58         DEF_BASE("rcan", R8A7745_CLK_RCAN, CLK_TYPE_GEN2_RCAN,  CLK_USB_EXTAL),
  59
  60         DEF_FIXED("z2",    R8A7745_CLK_Z2,      CLK_PLL0,           1, 1),
  61         DEF_FIXED("zg",    R8A7745_CLK_ZG,      CLK_PLL1,           6, 1),
  62         DEF_FIXED("zx",    R8A7745_CLK_ZX,      CLK_PLL1,           3, 1),
  63         DEF_FIXED("zs",    R8A7745_CLK_ZS,      CLK_PLL1,           6, 1),
  64         DEF_FIXED("hp",    R8A7745_CLK_HP,      CLK_PLL1,          12, 1),
  65         DEF_FIXED("b",     R8A7745_CLK_B,       CLK_PLL1,          12, 1),
  66         DEF_FIXED("p",     R8A7745_CLK_P,       CLK_PLL1,          24, 1),
  67         DEF_FIXED("cl",    R8A7745_CLK_CL,      CLK_PLL1,          48, 1),
  68         DEF_FIXED("cp",    R8A7745_CLK_CP,      CLK_PLL1,          48, 1),
  69         DEF_FIXED("m2",    R8A7745_CLK_M2,      CLK_PLL1,           8, 1),
  70         DEF_FIXED("zb3",   R8A7745_CLK_ZB3,     CLK_PLL3,           4, 1),
  71         DEF_FIXED("zb3d2", R8A7745_CLK_ZB3D2,   CLK_PLL3,           8, 1),
  72         DEF_FIXED("ddr",   R8A7745_CLK_DDR,     CLK_PLL3,           8, 1),
  73         DEF_FIXED("mp",    R8A7745_CLK_MP,      CLK_PLL1_DIV2,     15, 1),
  74         DEF_FIXED("cpex",  R8A7745_CLK_CPEX,    CLK_EXTAL,          2, 1),
  75         DEF_FIXED("r",     R8A7745_CLK_R,       CLK_PLL1,       49152, 1),
  76         DEF_FIXED("osc",   R8A7745_CLK_OSC,     CLK_PLL1,       12288, 1),
  77
  78         DEF_DIV6P1("sd2",  R8A7745_CLK_SD2,     CLK_PLL1_DIV2,  0x078),
  79         DEF_DIV6P1("sd3",  R8A7745_CLK_SD3,     CLK_PLL1_DIV2,  0x26c),
  80         DEF_DIV6P1("mmc0", R8A7745_CLK_MMC0,    CLK_PLL1_DIV2,  0x240),
  81 };
  82
  83 static const struct mssr_mod_clk r8a7745_mod_clks[] __initconst = {
  84         DEF_MOD("msiof0",                  0,   R8A7745_CLK_MP),
  85         DEF_MOD("vcp0",                  101,   R8A7745_CLK_ZS),
  86         DEF_MOD("vpc0",                  103,   R8A7745_CLK_ZS),
  87         DEF_MOD("tmu1",                  111,   R8A7745_CLK_P),
  88         DEF_MOD("3dg",                   112,   R8A7745_CLK_ZG),
  89         DEF_MOD("2d-dmac",               115,   R8A7745_CLK_ZS),
  90         DEF_MOD("fdp1-0",                119,   R8A7745_CLK_ZS),
  91         DEF_MOD("tmu3",                  121,   R8A7745_CLK_P),
  92         DEF_MOD("tmu2",                  122,   R8A7745_CLK_P),
  93         DEF_MOD("cmt0",                  124,   R8A7745_CLK_R),
  94         DEF_MOD("tmu0",                  125,   R8A7745_CLK_CP),
  95         DEF_MOD("vsp1du0",               128,   R8A7745_CLK_ZS),
  96         DEF_MOD("vsp1-sy",               131,   R8A7745_CLK_ZS),
  97         DEF_MOD("scifa2",                202,   R8A7745_CLK_MP),
  98         DEF_MOD("scifa1",                203,   R8A7745_CLK_MP),
  99         DEF_MOD("scifa0",                204,   R8A7745_CLK_MP),
 100         DEF_MOD("msiof2",                205,   R8A7745_CLK_MP),
 101         DEF_MOD("scifb0",                206,   R8A7745_CLK_MP),
 102         DEF_MOD("scifb1",                207,   R8A7745_CLK_MP),
 103         DEF_MOD("msiof1",                208,   R8A7745_CLK_MP),
 104         DEF_MOD("scifb2",                216,   R8A7745_CLK_MP),
 105         DEF_MOD("sys-dmac1",             218,   R8A7745_CLK_ZS),
 106         DEF_MOD("sys-dmac0",             219,   R8A7745_CLK_ZS),
 107         DEF_MOD("tpu0",                  304,   R8A7745_CLK_CP),
 108         DEF_MOD("sdhi3",                 311,   R8A7745_CLK_SD3),
 109         DEF_MOD("sdhi2",                 312,   R8A7745_CLK_SD2),
 110         DEF_MOD("sdhi0",                 314,   R8A7745_CLK_SD0),
 111         DEF_MOD("mmcif0",                315,   R8A7745_CLK_MMC0),
 112         DEF_MOD("iic0",                  318,   R8A7745_CLK_HP),
 113         DEF_MOD("iic1",                  323,   R8A7745_CLK_HP),
 114         DEF_MOD("cmt1",                  329,   R8A7745_CLK_R),
 115         DEF_MOD("usbhs-dmac0",           330,   R8A7745_CLK_HP),
 116         DEF_MOD("usbhs-dmac1",           331,   R8A7745_CLK_HP),
 117         DEF_MOD("irqc",                  407,   R8A7745_CLK_CP),
 118         DEF_MOD("intc-sys",              408,   R8A7745_CLK_ZS),
 119         DEF_MOD("audio-dmac0",           502,   R8A7745_CLK_HP),
 120         DEF_MOD("pwm",                   523,   R8A7745_CLK_P),
 121         DEF_MOD("usb-ehci",              703,   R8A7745_CLK_MP),
 122         DEF_MOD("usbhs",                 704,   R8A7745_CLK_HP),
 123         DEF_MOD("hscif2",                713,   R8A7745_CLK_ZS),
 124         DEF_MOD("scif5",                 714,   R8A7745_CLK_P),
 125         DEF_MOD("scif4",                 715,   R8A7745_CLK_P),
 126         DEF_MOD("hscif1",                716,   R8A7745_CLK_ZS),
 127         DEF_MOD("hscif0",                717,   R8A7745_CLK_ZS),
 128         DEF_MOD("scif3",                 718,   R8A7745_CLK_P),
 129         DEF_MOD("scif2",                 719,   R8A7745_CLK_P),
 130         DEF_MOD("scif1",                 720,   R8A7745_CLK_P),
 131         DEF_MOD("scif0",                 721,   R8A7745_CLK_P),
 132         DEF_MOD("du0",                   724,   R8A7745_CLK_ZX),
 133         DEF_MOD("ipmmu-sgx",             800,   R8A7745_CLK_ZX),
 134         DEF_MOD("vin1",                  810,   R8A7745_CLK_ZG),
 135         DEF_MOD("vin0",                  811,   R8A7745_CLK_ZG),
 136         DEF_MOD("etheravb",              812,   R8A7745_CLK_HP),
 137         DEF_MOD("ether",                 813,   R8A7745_CLK_P),
 138         DEF_MOD("gpio6",                 905,   R8A7745_CLK_CP),
 139         DEF_MOD("gpio5",                 907,   R8A7745_CLK_CP),
 140         DEF_MOD("gpio4",                 908,   R8A7745_CLK_CP),
 141         DEF_MOD("gpio3",                 909,   R8A7745_CLK_CP),
 142         DEF_MOD("gpio2",                 910,   R8A7745_CLK_CP),
 143         DEF_MOD("gpio1",                 911,   R8A7745_CLK_CP),
 144         DEF_MOD("gpio0",                 912,   R8A7745_CLK_CP),
 145         DEF_MOD("can1",                  915,   R8A7745_CLK_P),
 146         DEF_MOD("can0",                  916,   R8A7745_CLK_P),
 147         DEF_MOD("qspi_mod",              917,   R8A7745_CLK_QSPI),
 148         DEF_MOD("i2c5",                  925,   R8A7745_CLK_HP),
 149         DEF_MOD("i2c4",                  927,   R8A7745_CLK_HP),
 150         DEF_MOD("i2c3",                  928,   R8A7745_CLK_HP),
 151         DEF_MOD("i2c2",                  929,   R8A7745_CLK_HP),
 152         DEF_MOD("i2c1",                  930,   R8A7745_CLK_HP),
 153         DEF_MOD("i2c0",                  931,   R8A7745_CLK_HP),
 154         DEF_MOD("ssi-all",              1005,   R8A7745_CLK_P),
 155         DEF_MOD("ssi9",                 1006,   MOD_CLK_ID(1005)),
 156         DEF_MOD("ssi8",                 1007,   MOD_CLK_ID(1005)),
 157         DEF_MOD("ssi7",                 1008,   MOD_CLK_ID(1005)),
 158         DEF_MOD("ssi6",                 1009,   MOD_CLK_ID(1005)),
 159         DEF_MOD("ssi5",                 1010,   MOD_CLK_ID(1005)),
 160         DEF_MOD("ssi4",                 1011,   MOD_CLK_ID(1005)),
 161         DEF_MOD("ssi3",                 1012,   MOD_CLK_ID(1005)),
 162         DEF_MOD("ssi2",                 1013,   MOD_CLK_ID(1005)),
 163         DEF_MOD("ssi1",                 1014,   MOD_CLK_ID(1005)),
 164         DEF_MOD("ssi0",                 1015,   MOD_CLK_ID(1005)),
 165         DEF_MOD("scu-all",              1017,   R8A7745_CLK_P),
 166         DEF_MOD("scu-dvc1",             1018,   MOD_CLK_ID(1017)),
 167         DEF_MOD("scu-dvc0",             1019,   MOD_CLK_ID(1017)),
 168         DEF_MOD("scu-ctu1-mix1",        1020,   MOD_CLK_ID(1017)),
 169         DEF_MOD("scu-ctu0-mix0",        1021,   MOD_CLK_ID(1017)),
 170         DEF_MOD("scu-src9",             1022,   MOD_CLK_ID(1017)),
 171         DEF_MOD("scu-src8",             1023,   MOD_CLK_ID(1017)),
 172         DEF_MOD("scu-src7",             1024,   MOD_CLK_ID(1017)),
 173         DEF_MOD("scu-src6",             1025,   MOD_CLK_ID(1017)),
 174         DEF_MOD("scu-src5",             1026,   MOD_CLK_ID(1017)),
 175         DEF_MOD("scu-src4",             1027,   MOD_CLK_ID(1017)),
 176         DEF_MOD("scu-src3",             1028,   MOD_CLK_ID(1017)),
 177         DEF_MOD("scu-src2",             1029,   MOD_CLK_ID(1017)),
 178         DEF_MOD("scu-src1",             1030,   MOD_CLK_ID(1017)),
 179         DEF_MOD("scu-src0",             1031,   MOD_CLK_ID(1017)),
 180         DEF_MOD("scifa3",               1106,   R8A7745_CLK_MP),
 181         DEF_MOD("scifa4",               1107,   R8A7745_CLK_MP),
 182         DEF_MOD("scifa5",               1108,   R8A7745_CLK_MP),
 183 };
 184
 185 static const unsigned int r8a7745_crit_mod_clks[] __initconst = {
 186         MOD_CLK_ID(408),        /* INTC-SYS (GIC) */
 187 };
 188
 189 /*
 190  * CPG Clock Data
 191  */
 192
 193 /*
 194  *    MD        EXTAL           PLL0    PLL1    PLL3
 195  * 14 13 19     (MHz)           *1      *2
 196  *---------------------------------------------------
 197  * 0  0  0      15              x200/3  x208/2  x106
 198  * 0  0  1      15              x200/3  x208/2  x88
 199  * 0  1  0      20              x150/3  x156/2  x80
 200  * 0  1  1      20              x150/3  x156/2  x66
 201  * 1  0  0      26 / 2          x230/3  x240/2  x122
 202  * 1  0  1      26 / 2          x230/3  x240/2  x102
 203  * 1  1  0      30 / 2          x200/3  x208/2  x106
 204  * 1  1  1      30 / 2          x200/3  x208/2  x88
 205  *
 206  * *1 : Table 7.5b indicates VCO output (PLL0 = VCO/3)
 207  * *2 : Table 7.5b indicates VCO output (PLL1 = VCO/2)
 208  */
 209 #define CPG_PLL_CONFIG_INDEX(md)        ((((md) & BIT(14)) >> 12) | \
 210                                          (((md) & BIT(13)) >> 12) | \
 211                                          (((md) & BIT(19)) >> 19))
 212
 213 static const struct rcar_gen2_cpg_pll_config cpg_pll_configs[8] __initconst = {
 214         /* EXTAL div    PLL1 mult       PLL3 mult       PLL0 mult */
 215         { 1,            208,            106,            200     },
 216         { 1,            208,            88,             200     },
 217         { 1,            156,            80,             150     },
 218         { 1,            156,            66,             150     },
 219         { 2,            240,            122,            230     },
 220         { 2,            240,            102,            230     },
 221         { 2,            208,            106,            200     },
 222         { 2,            208,            88,             200     },
 223 };
 224
 225 static int __init r8a7745_cpg_mssr_init(struct device *dev)
 226 {
 227         const struct rcar_gen2_cpg_pll_config *cpg_pll_config;
 228         u32 cpg_mode;
 229         int error;
 230
 231         error = rcar_rst_read_mode_pins(&cpg_mode);
 232         if (error)
 233                 return error;
 234
 235         cpg_pll_config = &cpg_pll_configs[CPG_PLL_CONFIG_INDEX(cpg_mode)];
 236
 237         return rcar_gen2_cpg_init(cpg_pll_config, 3, cpg_mode);
 238 }
 239
 240 const struct cpg_mssr_info r8a7745_cpg_mssr_info __initconst = {
 241         /* Core Clocks */
 242         .core_clks = r8a7745_core_clks,
 243         .num_core_clks = ARRAY_SIZE(r8a7745_core_clks),
 244         .last_dt_core_clk = LAST_DT_CORE_CLK,
 245         .num_total_core_clks = MOD_CLK_BASE,
 246
 247         /* Module Clocks */
 248         .mod_clks = r8a7745_mod_clks,
 249         .num_mod_clks = ARRAY_SIZE(r8a7745_mod_clks),
 250         .num_hw_mod_clks = 12 * 32,
 251
 252         /* Critical Module Clocks */
 253         .crit_mod_clks = r8a7745_crit_mod_clks,
 254         .num_crit_mod_clks = ARRAY_SIZE(r8a7745_crit_mod_clks),
 255
 256         /* Callbacks */
 257         .init = r8a7745_cpg_mssr_init,
 258         .cpg_clk_register = rcar_gen2_cpg_clk_register,
 259 };