drivers/clk/renesas/r8a7791-cpg-mssr.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Renesas R8A7791 CPG MSSR driver
   4  *
   5  * Copyright (C) 2018 Marek Vasut <marek.vasut@gmail.com>
   6  *
   7  * Based on the following driver from Linux kernel:
   8  * r8a7791 Clock Pulse Generator / Module Standby and Software Reset
   9  *
  10  * Copyright (C) 2015-2017 Glider bvba
  11  *
  12  * Based on clk-rcar-gen2.c
  13  *
  14  * Copyright (C) 2013 Ideas On Board SPRL
  15  */
  16
  17 #include <common.h>
  18 #include <clk-uclass.h>
  19 #include <dm.h>
  20 #include <linux/bitops.h>
  21
  22 #include <dt-bindings/clock/r8a7791-cpg-mssr.h>
  23
  24 #include "renesas-cpg-mssr.h"
  25 #include "rcar-gen2-cpg.h"
  26
  27 enum clk_ids {
  28         /* Core Clock Outputs exported to DT */
  29         LAST_DT_CORE_CLK = R8A7791_CLK_OSC,
  30
  31         /* External Input Clocks */
  32         CLK_EXTAL,
  33         CLK_USB_EXTAL,
  34
  35         /* Internal Core Clocks */
  36         CLK_MAIN,
  37         CLK_PLL0,
  38         CLK_PLL1,
  39         CLK_PLL3,
  40         CLK_PLL1_DIV2,
  41
  42         /* Module Clocks */
  43         MOD_CLK_BASE
  44 };
  45
  46 static const struct cpg_core_clk r8a7791_core_clks[] = {
  47         /* External Clock Inputs */
  48         DEF_INPUT("extal",     CLK_EXTAL),
  49         DEF_INPUT("usb_extal", CLK_USB_EXTAL),
  50
  51         /* Internal Core Clocks */
  52         DEF_BASE(".main",       CLK_MAIN, CLK_TYPE_GEN2_MAIN, CLK_EXTAL),
  53         DEF_BASE(".pll0",       CLK_PLL0, CLK_TYPE_GEN2_PLL0, CLK_MAIN),
  54         DEF_BASE(".pll1",       CLK_PLL1, CLK_TYPE_GEN2_PLL1, CLK_MAIN),
  55         DEF_BASE(".pll3",       CLK_PLL3, CLK_TYPE_GEN2_PLL3, CLK_MAIN),
  56
  57         DEF_FIXED(".pll1_div2", CLK_PLL1_DIV2, CLK_PLL1, 2, 1),
  58
  59         /* Core Clock Outputs */
  60         DEF_BASE("z",    R8A7791_CLK_Z,    CLK_TYPE_GEN2_Z,    CLK_PLL0),
  61         DEF_BASE("adsp", R8A7791_CLK_ADSP, CLK_TYPE_GEN2_ADSP, CLK_PLL1),
  62         DEF_BASE("sdh",  R8A7791_CLK_SDH,  CLK_TYPE_GEN2_SDH,  CLK_PLL1),
  63         DEF_BASE("sd0",  R8A7791_CLK_SD0,  CLK_TYPE_GEN2_SD0,  CLK_PLL1),
  64         DEF_BASE("qspi", R8A7791_CLK_QSPI, CLK_TYPE_GEN2_QSPI, CLK_PLL1_DIV2),
  65         DEF_BASE("rcan", R8A7791_CLK_RCAN, CLK_TYPE_GEN2_RCAN, CLK_USB_EXTAL),
  66
  67         DEF_FIXED("zg",     R8A7791_CLK_ZG,    CLK_PLL1,          3, 1),
  68         DEF_FIXED("zx",     R8A7791_CLK_ZX,    CLK_PLL1,          3, 1),
  69         DEF_FIXED("zs",     R8A7791_CLK_ZS,    CLK_PLL1,          6, 1),
  70         DEF_FIXED("hp",     R8A7791_CLK_HP,    CLK_PLL1,         12, 1),
  71         DEF_FIXED("i",      R8A7791_CLK_I,     CLK_PLL1,          2, 1),
  72         DEF_FIXED("b",      R8A7791_CLK_B,     CLK_PLL1,         12, 1),
  73         DEF_FIXED("lb",     R8A7791_CLK_LB,    CLK_PLL1,         24, 1),
  74         DEF_FIXED("p",      R8A7791_CLK_P,     CLK_PLL1,         24, 1),
  75         DEF_FIXED("cl",     R8A7791_CLK_CL,    CLK_PLL1,         48, 1),
  76         DEF_FIXED("m2",     R8A7791_CLK_M2,    CLK_PLL1,          8, 1),
  77         DEF_FIXED("zb3",    R8A7791_CLK_ZB3,   CLK_PLL3,          4, 1),
  78         DEF_FIXED("zb3d2",  R8A7791_CLK_ZB3D2, CLK_PLL3,          8, 1),
  79         DEF_FIXED("ddr",    R8A7791_CLK_DDR,   CLK_PLL3,          8, 1),
  80         DEF_FIXED("mp",     R8A7791_CLK_MP,    CLK_PLL1_DIV2,    15, 1),
  81         DEF_FIXED("cp",     R8A7791_CLK_CP,    CLK_EXTAL,         2, 1),
  82         DEF_FIXED("r",      R8A7791_CLK_R,     CLK_PLL1,      49152, 1),
  83         DEF_FIXED("osc",    R8A7791_CLK_OSC,   CLK_PLL1,      12288, 1),
  84
  85         DEF_DIV6P1("sd2",   R8A7791_CLK_SD2,   CLK_PLL1_DIV2, 0x078),
  86         DEF_DIV6P1("sd3",   R8A7791_CLK_SD3,   CLK_PLL1_DIV2, 0x26c),
  87         DEF_DIV6P1("mmc0",  R8A7791_CLK_MMC0,  CLK_PLL1_DIV2, 0x240),
  88         DEF_DIV6P1("ssp",   R8A7791_CLK_SSP,   CLK_PLL1_DIV2, 0x248),
  89         DEF_DIV6P1("ssprs", R8A7791_CLK_SSPRS, CLK_PLL1_DIV2, 0x24c),
  90 };
  91
  92 static const struct mssr_mod_clk r8a7791_mod_clks[] = {
  93         DEF_MOD("msiof0",                  0,   R8A7791_CLK_MP),
  94         DEF_MOD("vcp0",                  101,   R8A7791_CLK_ZS),
  95         DEF_MOD("vpc0",                  103,   R8A7791_CLK_ZS),
  96         DEF_MOD("jpu",                   106,   R8A7791_CLK_M2),
  97         DEF_MOD("ssp1",                  109,   R8A7791_CLK_ZS),
  98         DEF_MOD("tmu1",                  111,   R8A7791_CLK_P),
  99         DEF_MOD("3dg",                   112,   R8A7791_CLK_ZG),
 100         DEF_MOD("2d-dmac",               115,   R8A7791_CLK_ZS),
 101         DEF_MOD("fdp1-1",                118,   R8A7791_CLK_ZS),
 102         DEF_MOD("fdp1-0",                119,   R8A7791_CLK_ZS),
 103         DEF_MOD("tmu3",                  121,   R8A7791_CLK_P),
 104         DEF_MOD("tmu2",                  122,   R8A7791_CLK_P),
 105         DEF_MOD("cmt0",                  124,   R8A7791_CLK_R),
 106         DEF_MOD("tmu0",                  125,   R8A7791_CLK_CP),
 107         DEF_MOD("vsp1du1",               127,   R8A7791_CLK_ZS),
 108         DEF_MOD("vsp1du0",               128,   R8A7791_CLK_ZS),
 109         DEF_MOD("vsp1-sy",               131,   R8A7791_CLK_ZS),
 110         DEF_MOD("scifa2",                202,   R8A7791_CLK_MP),
 111         DEF_MOD("scifa1",                203,   R8A7791_CLK_MP),
 112         DEF_MOD("scifa0",                204,   R8A7791_CLK_MP),
 113         DEF_MOD("msiof2",                205,   R8A7791_CLK_MP),
 114         DEF_MOD("scifb0",                206,   R8A7791_CLK_MP),
 115         DEF_MOD("scifb1",                207,   R8A7791_CLK_MP),
 116         DEF_MOD("msiof1",                208,   R8A7791_CLK_MP),
 117         DEF_MOD("scifb2",                216,   R8A7791_CLK_MP),
 118         DEF_MOD("sys-dmac1",             218,   R8A7791_CLK_ZS),
 119         DEF_MOD("sys-dmac0",             219,   R8A7791_CLK_ZS),
 120         DEF_MOD("tpu0",                  304,   R8A7791_CLK_CP),
 121         DEF_MOD("sdhi3",                 311,   R8A7791_CLK_SD3),
 122         DEF_MOD("sdhi2",                 312,   R8A7791_CLK_SD2),
 123         DEF_MOD("sdhi0",                 314,   R8A7791_CLK_SD0),
 124         DEF_MOD("mmcif0",                315,   R8A7791_CLK_MMC0),
 125         DEF_MOD("iic0",                  318,   R8A7791_CLK_HP),
 126         DEF_MOD("pciec",                 319,   R8A7791_CLK_MP),
 127         DEF_MOD("iic1",                  323,   R8A7791_CLK_HP),
 128         DEF_MOD("usb3.0",                328,   R8A7791_CLK_MP),
 129         DEF_MOD("cmt1",                  329,   R8A7791_CLK_R),
 130         DEF_MOD("usbhs-dmac0",           330,   R8A7791_CLK_HP),
 131         DEF_MOD("usbhs-dmac1",           331,   R8A7791_CLK_HP),
 132         DEF_MOD("rwdt",                  402,   R8A7791_CLK_R),
 133         DEF_MOD("irqc",                  407,   R8A7791_CLK_CP),
 134         DEF_MOD("intc-sys",              408,   R8A7791_CLK_ZS),
 135         DEF_MOD("audio-dmac1",           501,   R8A7791_CLK_HP),
 136         DEF_MOD("audio-dmac0",           502,   R8A7791_CLK_HP),
 137         DEF_MOD("adsp_mod",              506,   R8A7791_CLK_ADSP),
 138         DEF_MOD("thermal",               522,   CLK_EXTAL),
 139         DEF_MOD("pwm",                   523,   R8A7791_CLK_P),
 140         DEF_MOD("usb-ehci",              703,   R8A7791_CLK_MP),
 141         DEF_MOD("usbhs",                 704,   R8A7791_CLK_HP),
 142         DEF_MOD("hscif2",                713,   R8A7791_CLK_ZS),
 143         DEF_MOD("scif5",                 714,   R8A7791_CLK_P),
 144         DEF_MOD("scif4",                 715,   R8A7791_CLK_P),
 145         DEF_MOD("hscif1",                716,   R8A7791_CLK_ZS),
 146         DEF_MOD("hscif0",                717,   R8A7791_CLK_ZS),
 147         DEF_MOD("scif3",                 718,   R8A7791_CLK_P),
 148         DEF_MOD("scif2",                 719,   R8A7791_CLK_P),
 149         DEF_MOD("scif1",                 720,   R8A7791_CLK_P),
 150         DEF_MOD("scif0",                 721,   R8A7791_CLK_P),
 151         DEF_MOD("du1",                   723,   R8A7791_CLK_ZX),
 152         DEF_MOD("du0",                   724,   R8A7791_CLK_ZX),
 153         DEF_MOD("lvds0",                 726,   R8A7791_CLK_ZX),
 154         DEF_MOD("ipmmu-sgx",             800,   R8A7791_CLK_ZX),
 155         DEF_MOD("mlb",                   802,   R8A7791_CLK_HP),
 156         DEF_MOD("vin2",                  809,   R8A7791_CLK_ZG),
 157         DEF_MOD("vin1",                  810,   R8A7791_CLK_ZG),
 158         DEF_MOD("vin0",                  811,   R8A7791_CLK_ZG),
 159         DEF_MOD("etheravb",              812,   R8A7791_CLK_HP),
 160         DEF_MOD("ether",                 813,   R8A7791_CLK_P),
 161         DEF_MOD("sata1",                 814,   R8A7791_CLK_ZS),
 162         DEF_MOD("sata0",                 815,   R8A7791_CLK_ZS),
 163         DEF_MOD("gyro-adc",              901,   R8A7791_CLK_P),
 164         DEF_MOD("gpio7",                 904,   R8A7791_CLK_CP),
 165         DEF_MOD("gpio6",                 905,   R8A7791_CLK_CP),
 166         DEF_MOD("gpio5",                 907,   R8A7791_CLK_CP),
 167         DEF_MOD("gpio4",                 908,   R8A7791_CLK_CP),
 168         DEF_MOD("gpio3",                 909,   R8A7791_CLK_CP),
 169         DEF_MOD("gpio2",                 910,   R8A7791_CLK_CP),
 170         DEF_MOD("gpio1",                 911,   R8A7791_CLK_CP),
 171         DEF_MOD("gpio0",                 912,   R8A7791_CLK_CP),
 172         DEF_MOD("can1",                  915,   R8A7791_CLK_P),
 173         DEF_MOD("can0",                  916,   R8A7791_CLK_P),
 174         DEF_MOD("qspi_mod",              917,   R8A7791_CLK_QSPI),
 175         DEF_MOD("i2c5",                  925,   R8A7791_CLK_HP),
 176         DEF_MOD("iicdvfs",               926,   R8A7791_CLK_CP),
 177         DEF_MOD("i2c4",                  927,   R8A7791_CLK_HP),
 178         DEF_MOD("i2c3",                  928,   R8A7791_CLK_HP),
 179         DEF_MOD("i2c2",                  929,   R8A7791_CLK_HP),
 180         DEF_MOD("i2c1",                  930,   R8A7791_CLK_HP),
 181         DEF_MOD("i2c0",                  931,   R8A7791_CLK_HP),
 182         DEF_MOD("ssi-all",              1005,   R8A7791_CLK_P),
 183         DEF_MOD("ssi9",                 1006,   MOD_CLK_ID(1005)),
 184         DEF_MOD("ssi8",                 1007,   MOD_CLK_ID(1005)),
 185         DEF_MOD("ssi7",                 1008,   MOD_CLK_ID(1005)),
 186         DEF_MOD("ssi6",                 1009,   MOD_CLK_ID(1005)),
 187         DEF_MOD("ssi5",                 1010,   MOD_CLK_ID(1005)),
 188         DEF_MOD("ssi4",                 1011,   MOD_CLK_ID(1005)),
 189         DEF_MOD("ssi3",                 1012,   MOD_CLK_ID(1005)),
 190         DEF_MOD("ssi2",                 1013,   MOD_CLK_ID(1005)),
 191         DEF_MOD("ssi1",                 1014,   MOD_CLK_ID(1005)),
 192         DEF_MOD("ssi0",                 1015,   MOD_CLK_ID(1005)),
 193         DEF_MOD("scu-all",              1017,   R8A7791_CLK_P),
 194         DEF_MOD("scu-dvc1",             1018,   MOD_CLK_ID(1017)),
 195         DEF_MOD("scu-dvc0",             1019,   MOD_CLK_ID(1017)),
 196         DEF_MOD("scu-ctu1-mix1",        1020,   MOD_CLK_ID(1017)),
 197         DEF_MOD("scu-ctu0-mix0",        1021,   MOD_CLK_ID(1017)),
 198         DEF_MOD("scu-src9",             1022,   MOD_CLK_ID(1017)),
 199         DEF_MOD("scu-src8",             1023,   MOD_CLK_ID(1017)),
 200         DEF_MOD("scu-src7",             1024,   MOD_CLK_ID(1017)),
 201         DEF_MOD("scu-src6",             1025,   MOD_CLK_ID(1017)),
 202         DEF_MOD("scu-src5",             1026,   MOD_CLK_ID(1017)),
 203         DEF_MOD("scu-src4",             1027,   MOD_CLK_ID(1017)),
 204         DEF_MOD("scu-src3",             1028,   MOD_CLK_ID(1017)),
 205         DEF_MOD("scu-src2",             1029,   MOD_CLK_ID(1017)),
 206         DEF_MOD("scu-src1",             1030,   MOD_CLK_ID(1017)),
 207         DEF_MOD("scu-src0",             1031,   MOD_CLK_ID(1017)),
 208         DEF_MOD("scifa3",               1106,   R8A7791_CLK_MP),
 209         DEF_MOD("scifa4",               1107,   R8A7791_CLK_MP),
 210         DEF_MOD("scifa5",               1108,   R8A7791_CLK_MP),
 211 };
 212
 213 /*
 214  * CPG Clock Data
 215  */
 216
 217 /*
 218  *   MD         EXTAL           PLL0    PLL1    PLL3
 219  * 14 13 19     (MHz)           *1      *1
 220  *---------------------------------------------------
 221  * 0  0  0      15              x172/2  x208/2  x106
 222  * 0  0  1      15              x172/2  x208/2  x88
 223  * 0  1  0      20              x130/2  x156/2  x80
 224  * 0  1  1      20              x130/2  x156/2  x66
 225  * 1  0  0      26 / 2          x200/2  x240/2  x122
 226  * 1  0  1      26 / 2          x200/2  x240/2  x102
 227  * 1  1  0      30 / 2          x172/2  x208/2  x106
 228  * 1  1  1      30 / 2          x172/2  x208/2  x88
 229  *
 230  * *1 : Table 7.5a indicates VCO output (PLLx = VCO/2)
 231  */
 232 #define CPG_PLL_CONFIG_INDEX(md)        ((((md) & BIT(14)) >> 12) | \
 233                                          (((md) & BIT(13)) >> 12) | \
 234                                          (((md) & BIT(19)) >> 19))
 235 static const struct rcar_gen2_cpg_pll_config cpg_pll_configs[8] = {
 236         { 1, 208, 106 }, { 1, 208,  88 }, { 1, 156,  80 }, { 1, 156,  66 },
 237         { 2, 240, 122 }, { 2, 240, 102 }, { 2, 208, 106 }, { 2, 208,  88 },
 238 };
 239
 240 static const struct mstp_stop_table r8a7791_mstp_table[] = {
 241         { 0x00640801, 0x400000, 0x00640801, 0x0 },
 242         { 0x9B6C9B5A, 0x0, 0x9B6C9B5A, 0x0 },
 243         { 0x100D21FC, 0x2000, 0x100D21FC, 0x0 },
 244         { 0xF08CD810, 0x0, 0xF08CD810, 0x0 },
 245         { 0x800001C4, 0x180, 0x800001C4, 0x0 },
 246         { 0x44C00046, 0x0, 0x44C00046, 0x0 },
 247         { 0x0, 0x0, 0x0, 0x0 }, /* SMSTP6 is not present on Gen2 */
 248         { 0x05BFE618, 0x200000, 0x05BFE618, 0x0 },
 249         { 0x40C0FE85, 0x0, 0x40C0FE85, 0x0 },
 250         { 0xFF979FFF, 0x0, 0xFF979FFF, 0x0 },
 251         { 0xFFFEFFE0, 0x0, 0xFFFEFFE0, 0x0 },
 252         { 0x000001C0, 0x0, 0x000001C0, 0x0 },
 253 };
 254
 255 static const void *r8a7791_get_pll_config(const u32 cpg_mode)
 256 {
 257         return &cpg_pll_configs[CPG_PLL_CONFIG_INDEX(cpg_mode)];
 258 }
 259
 260 static const struct cpg_mssr_info r8a7791_cpg_mssr_info = {
 261         .core_clk               = r8a7791_core_clks,
 262         .core_clk_size          = ARRAY_SIZE(r8a7791_core_clks),
 263         .mod_clk                = r8a7791_mod_clks,
 264         .mod_clk_size           = ARRAY_SIZE(r8a7791_mod_clks),
 265         .mstp_table             = r8a7791_mstp_table,
 266         .mstp_table_size        = ARRAY_SIZE(r8a7791_mstp_table),
 267         .reset_node             = "renesas,r8a7791-rst",
 268         .extal_usb_node         = "usb_extal",
 269         .mod_clk_base           = MOD_CLK_BASE,
 270         .clk_extal_id           = CLK_EXTAL,
 271         .clk_extal_usb_id       = CLK_USB_EXTAL,
 272         .pll0_div               = 2,
 273         .get_pll_config         = r8a7791_get_pll_config,
 274 };
 275
 276 static const struct udevice_id r8a7791_clk_ids[] = {
 277         {
 278                 .compatible     = "renesas,r8a7791-cpg-mssr",
 279                 .data           = (ulong)&r8a7791_cpg_mssr_info
 280         },
 281         {
 282                 .compatible     = "renesas,r8a7793-cpg-mssr",
 283                 .data           = (ulong)&r8a7791_cpg_mssr_info
 284         },
 285         { }
 286 };
 287
 288 U_BOOT_DRIVER(clk_r8a7791) = {
 289         .name           = "clk_r8a7791",
 290         .id             = UCLASS_CLK,
 291         .of_match       = r8a7791_clk_ids,
 292         .priv_auto_alloc_size = sizeof(struct gen2_clk_priv),
 293         .ops            = &gen2_clk_ops,
 294         .probe          = gen2_clk_probe,
 295         .remove         = gen2_clk_remove,
 296 };