drivers/clk/renesas/r8a77470-cpg-mssr.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * r8a77470 Clock Pulse Generator / Module Standby and Software Reset
   4  *
   5  * Copyright (C) 2018 Renesas Electronics Corp.
   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/r8a77470-cpg-mssr.h>
  14
  15 #include "renesas-cpg-mssr.h"
  16 #include "rcar-gen2-cpg.h"
  17
  18 enum clk_ids {
  19         /* Core Clock Outputs exported to DT */
  20         LAST_DT_CORE_CLK = R8A77470_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
  37 static const struct cpg_core_clk r8a77470_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",  R8A77470_CLK_SDH,  CLK_TYPE_GEN2_SDH,  CLK_PLL1),
  52         DEF_BASE("sd0",  R8A77470_CLK_SD0,  CLK_TYPE_GEN2_SD0,  CLK_PLL1),
  53         DEF_BASE("sd1",  R8A77470_CLK_SD1,  CLK_TYPE_GEN2_SD1,  CLK_PLL1),
  54         DEF_BASE("qspi", R8A77470_CLK_QSPI, CLK_TYPE_GEN2_QSPI, CLK_PLL1_DIV2),
  55         DEF_BASE("rcan", R8A77470_CLK_RCAN, CLK_TYPE_GEN2_RCAN, CLK_USB_EXTAL),
  56
  57         DEF_FIXED("z2",    R8A77470_CLK_Z2,     CLK_PLL0,           1, 1),
  58         DEF_FIXED("zx",    R8A77470_CLK_ZX,     CLK_PLL1,           3, 1),
  59         DEF_FIXED("zs",    R8A77470_CLK_ZS,     CLK_PLL1,           6, 1),
  60         DEF_FIXED("hp",    R8A77470_CLK_HP,     CLK_PLL1,          12, 1),
  61         DEF_FIXED("b",     R8A77470_CLK_B,      CLK_PLL1,          12, 1),
  62         DEF_FIXED("lb",    R8A77470_CLK_LB,     CLK_PLL1,          24, 1),
  63         DEF_FIXED("p",     R8A77470_CLK_P,      CLK_PLL1,          24, 1),
  64         DEF_FIXED("cl",    R8A77470_CLK_CL,     CLK_PLL1,          48, 1),
  65         DEF_FIXED("cp",    R8A77470_CLK_CP,     CLK_PLL1,          48, 1),
  66         DEF_FIXED("m2",    R8A77470_CLK_M2,     CLK_PLL1,           8, 1),
  67         DEF_FIXED("zb3",   R8A77470_CLK_ZB3,    CLK_PLL3,           4, 1),
  68         DEF_FIXED("mp",    R8A77470_CLK_MP,     CLK_PLL1_DIV2,     15, 1),
  69         DEF_FIXED("cpex",  R8A77470_CLK_CPEX,   CLK_EXTAL,          2, 1),
  70         DEF_FIXED("r",     R8A77470_CLK_R,      CLK_PLL1,       49152, 1),
  71         DEF_FIXED("osc",   R8A77470_CLK_OSC,    CLK_PLL1,       12288, 1),
  72
  73         DEF_DIV6P1("sd2",  R8A77470_CLK_SD2,    CLK_PLL1_DIV2,  0x078),
  74 };
  75
  76 static const struct mssr_mod_clk r8a77470_mod_clks[] __initconst = {
  77         DEF_MOD("msiof0",                  0,   R8A77470_CLK_MP),
  78         DEF_MOD("vcp0",                  101,   R8A77470_CLK_ZS),
  79         DEF_MOD("vpc0",                  103,   R8A77470_CLK_ZS),
  80         DEF_MOD("tmu1",                  111,   R8A77470_CLK_P),
  81         DEF_MOD("3dg",                   112,   R8A77470_CLK_ZS),
  82         DEF_MOD("2d-dmac",               115,   R8A77470_CLK_ZS),
  83         DEF_MOD("fdp1-0",                119,   R8A77470_CLK_ZS),
  84         DEF_MOD("tmu3",                  121,   R8A77470_CLK_P),
  85         DEF_MOD("tmu2",                  122,   R8A77470_CLK_P),
  86         DEF_MOD("cmt0",                  124,   R8A77470_CLK_R),
  87         DEF_MOD("vsp1du0",               128,   R8A77470_CLK_ZS),
  88         DEF_MOD("vsp1-sy",               131,   R8A77470_CLK_ZS),
  89         DEF_MOD("msiof2",                205,   R8A77470_CLK_MP),
  90         DEF_MOD("msiof1",                208,   R8A77470_CLK_MP),
  91         DEF_MOD("sys-dmac1",             218,   R8A77470_CLK_ZS),
  92         DEF_MOD("sys-dmac0",             219,   R8A77470_CLK_ZS),
  93         DEF_MOD("sdhi2",                 312,   R8A77470_CLK_SD2),
  94         DEF_MOD("sdhi1",                 313,   R8A77470_CLK_SD1),
  95         DEF_MOD("sdhi0",                 314,   R8A77470_CLK_SD0),
  96         DEF_MOD("usbhs-dmac0-ch1",       326,   R8A77470_CLK_HP),
  97         DEF_MOD("usbhs-dmac1-ch1",       327,   R8A77470_CLK_HP),
  98         DEF_MOD("cmt1",                  329,   R8A77470_CLK_R),
  99         DEF_MOD("usbhs-dmac0-ch0",       330,   R8A77470_CLK_HP),
 100         DEF_MOD("usbhs-dmac1-ch0",       331,   R8A77470_CLK_HP),
 101         DEF_MOD("rwdt",                  402,   R8A77470_CLK_R),
 102         DEF_MOD("irqc",                  407,   R8A77470_CLK_CP),
 103         DEF_MOD("intc-sys",              408,   R8A77470_CLK_ZS),
 104         DEF_MOD("audio-dmac0",           502,   R8A77470_CLK_HP),
 105         DEF_MOD("pwm",                   523,   R8A77470_CLK_P),
 106         DEF_MOD("usb-ehci-0",            703,   R8A77470_CLK_MP),
 107         DEF_MOD("usbhs-0",               704,   R8A77470_CLK_HP),
 108         DEF_MOD("usb-ehci-1",            705,   R8A77470_CLK_MP),
 109         DEF_MOD("usbhs-1",               706,   R8A77470_CLK_HP),
 110         DEF_MOD("hscif2",                713,   R8A77470_CLK_ZS),
 111         DEF_MOD("scif5",                 714,   R8A77470_CLK_P),
 112         DEF_MOD("scif4",                 715,   R8A77470_CLK_P),
 113         DEF_MOD("hscif1",                716,   R8A77470_CLK_ZS),
 114         DEF_MOD("hscif0",                717,   R8A77470_CLK_ZS),
 115         DEF_MOD("scif3",                 718,   R8A77470_CLK_P),
 116         DEF_MOD("scif2",                 719,   R8A77470_CLK_P),
 117         DEF_MOD("scif1",                 720,   R8A77470_CLK_P),
 118         DEF_MOD("scif0",                 721,   R8A77470_CLK_P),
 119         DEF_MOD("du1",                   723,   R8A77470_CLK_ZX),
 120         DEF_MOD("du0",                   724,   R8A77470_CLK_ZX),
 121         DEF_MOD("ipmmu-sgx",             800,   R8A77470_CLK_ZX),
 122         DEF_MOD("etheravb",              812,   R8A77470_CLK_HP),
 123         DEF_MOD("ether",                 813,   R8A77470_CLK_P),
 124         DEF_MOD("gpio5",                 907,   R8A77470_CLK_CP),
 125         DEF_MOD("gpio4",                 908,   R8A77470_CLK_CP),
 126         DEF_MOD("gpio3",                 909,   R8A77470_CLK_CP),
 127         DEF_MOD("gpio2",                 910,   R8A77470_CLK_CP),
 128         DEF_MOD("gpio1",                 911,   R8A77470_CLK_CP),
 129         DEF_MOD("gpio0",                 912,   R8A77470_CLK_CP),
 130         DEF_MOD("can1",                  915,   R8A77470_CLK_P),
 131         DEF_MOD("can0",                  916,   R8A77470_CLK_P),
 132         DEF_MOD("qspi_mod-1",            917,   R8A77470_CLK_QSPI),
 133         DEF_MOD("qspi_mod-0",            918,   R8A77470_CLK_QSPI),
 134         DEF_MOD("i2c4",                  927,   R8A77470_CLK_HP),
 135         DEF_MOD("i2c3",                  928,   R8A77470_CLK_HP),
 136         DEF_MOD("i2c2",                  929,   R8A77470_CLK_HP),
 137         DEF_MOD("i2c1",                  930,   R8A77470_CLK_HP),
 138         DEF_MOD("i2c0",                  931,   R8A77470_CLK_HP),
 139         DEF_MOD("ssi-all",              1005,   R8A77470_CLK_P),
 140         DEF_MOD("ssi9",                 1006,   MOD_CLK_ID(1005)),
 141         DEF_MOD("ssi8",                 1007,   MOD_CLK_ID(1005)),
 142         DEF_MOD("ssi7",                 1008,   MOD_CLK_ID(1005)),
 143         DEF_MOD("ssi6",                 1009,   MOD_CLK_ID(1005)),
 144         DEF_MOD("ssi5",                 1010,   MOD_CLK_ID(1005)),
 145         DEF_MOD("ssi4",                 1011,   MOD_CLK_ID(1005)),
 146         DEF_MOD("ssi3",                 1012,   MOD_CLK_ID(1005)),
 147         DEF_MOD("ssi2",                 1013,   MOD_CLK_ID(1005)),
 148         DEF_MOD("ssi1",                 1014,   MOD_CLK_ID(1005)),
 149         DEF_MOD("ssi0",                 1015,   MOD_CLK_ID(1005)),
 150         DEF_MOD("scu-all",              1017,   R8A77470_CLK_P),
 151         DEF_MOD("scu-dvc1",             1018,   MOD_CLK_ID(1017)),
 152         DEF_MOD("scu-dvc0",             1019,   MOD_CLK_ID(1017)),
 153         DEF_MOD("scu-ctu1-mix1",        1020,   MOD_CLK_ID(1017)),
 154         DEF_MOD("scu-ctu0-mix0",        1021,   MOD_CLK_ID(1017)),
 155         DEF_MOD("scu-src6",             1025,   MOD_CLK_ID(1017)),
 156         DEF_MOD("scu-src5",             1026,   MOD_CLK_ID(1017)),
 157         DEF_MOD("scu-src4",             1027,   MOD_CLK_ID(1017)),
 158         DEF_MOD("scu-src3",             1028,   MOD_CLK_ID(1017)),
 159         DEF_MOD("scu-src2",             1029,   MOD_CLK_ID(1017)),
 160         DEF_MOD("scu-src1",             1030,   MOD_CLK_ID(1017)),
 161 };
 162
 163 static const unsigned int r8a77470_crit_mod_clks[] __initconst = {
 164         MOD_CLK_ID(402),        /* RWDT */
 165         MOD_CLK_ID(408),        /* INTC-SYS (GIC) */
 166 };
 167
 168 /*
 169  * CPG Clock Data
 170  */
 171
 172 /*
 173  *    MD        EXTAL           PLL0    PLL1    PLL3
 174  * 14 13        (MHz)           *1      *2
 175  *---------------------------------------------------
 176  * 0  0         20              x80     x78     x50
 177  * 0  1         26              x60     x60     x56
 178  * 1  0         Prohibited setting
 179  * 1  1         30              x52     x52     x50
 180  *
 181  * *1 : Table 7.4 indicates VCO output (PLL0 = VCO)
 182  * *2 : Table 7.4 indicates VCO output (PLL1 = VCO)
 183  */
 184 #define CPG_PLL_CONFIG_INDEX(md)        ((((md) & BIT(14)) >> 13) | \
 185                                          (((md) & BIT(13)) >> 13))
 186
 187 static const struct rcar_gen2_cpg_pll_config cpg_pll_configs[4] __initconst = {
 188         /* EXTAL div    PLL1 mult x2    PLL3 mult */
 189         { 1,            156,            50,     },
 190         { 1,            120,            56,     },
 191         { /* Invalid*/                          },
 192         { 1,            104,            50,     },
 193 };
 194
 195 static int __init r8a77470_cpg_mssr_init(struct device *dev)
 196 {
 197         const struct rcar_gen2_cpg_pll_config *cpg_pll_config;
 198         u32 cpg_mode;
 199         int error;
 200
 201         error = rcar_rst_read_mode_pins(&cpg_mode);
 202         if (error)
 203                 return error;
 204
 205         cpg_pll_config = &cpg_pll_configs[CPG_PLL_CONFIG_INDEX(cpg_mode)];
 206
 207         return rcar_gen2_cpg_init(cpg_pll_config, 2, cpg_mode);
 208 }
 209
 210 const struct cpg_mssr_info r8a77470_cpg_mssr_info __initconst = {
 211         /* Core Clocks */
 212         .core_clks = r8a77470_core_clks,
 213         .num_core_clks = ARRAY_SIZE(r8a77470_core_clks),
 214         .last_dt_core_clk = LAST_DT_CORE_CLK,
 215         .num_total_core_clks = MOD_CLK_BASE,
 216
 217         /* Module Clocks */
 218         .mod_clks = r8a77470_mod_clks,
 219         .num_mod_clks = ARRAY_SIZE(r8a77470_mod_clks),
 220         .num_hw_mod_clks = 12 * 32,
 221
 222         /* Critical Module Clocks */
 223         .crit_mod_clks = r8a77470_crit_mod_clks,
 224         .num_crit_mod_clks = ARRAY_SIZE(r8a77470_crit_mod_clks),
 225
 226         /* Callbacks */
 227         .init = r8a77470_cpg_mssr_init,
 228         .cpg_clk_register = rcar_gen2_cpg_clk_register,
 229 };