drivers/clk/renesas/r9a07g043-cpg.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * RZ/G2UL CPG driver
   4  *
   5  * Copyright (C) 2022 Renesas Electronics Corp.
   6  */
   7
   8 #include <linux/clk-provider.h>
   9 #include <linux/device.h>
  10 #include <linux/init.h>
  11 #include <linux/kernel.h>
  12
  13 #include <dt-bindings/clock/r9a07g043-cpg.h>
  14
  15 #include "rzg2l-cpg.h"
  16
  17 enum clk_ids {
  18         /* Core Clock Outputs exported to DT */
  19         LAST_DT_CORE_CLK = R9A07G043_CLK_P0_DIV2,
  20
  21         /* External Input Clocks */
  22         CLK_EXTAL,
  23
  24         /* Internal Core Clocks */
  25         CLK_OSC_DIV1000,
  26         CLK_PLL1,
  27         CLK_PLL2,
  28         CLK_PLL2_DIV2,
  29         CLK_PLL2_DIV2_8,
  30         CLK_PLL2_DIV2_10,
  31         CLK_PLL3,
  32         CLK_PLL3_400,
  33         CLK_PLL3_533,
  34         CLK_PLL3_DIV2,
  35         CLK_PLL3_DIV2_4,
  36         CLK_PLL3_DIV2_4_2,
  37         CLK_SEL_PLL3_3,
  38         CLK_DIV_PLL3_C,
  39 #ifdef CONFIG_ARM64
  40         CLK_PLL5,
  41         CLK_PLL5_500,
  42         CLK_PLL5_250,
  43 #endif
  44         CLK_PLL6,
  45         CLK_PLL6_250,
  46         CLK_P1_DIV2,
  47         CLK_PLL2_800,
  48         CLK_PLL2_SDHI_533,
  49         CLK_PLL2_SDHI_400,
  50         CLK_PLL2_SDHI_266,
  51         CLK_SD0_DIV4,
  52         CLK_SD1_DIV4,
  53
  54         /* Module Clocks */
  55         MOD_CLK_BASE,
  56 };
  57
  58 /* Divider tables */
  59 static const struct clk_div_table dtable_1_8[] = {
  60         {0, 1},
  61         {1, 2},
  62         {2, 4},
  63         {3, 8},
  64         {0, 0},
  65 };
  66
  67 static const struct clk_div_table dtable_1_32[] = {
  68         {0, 1},
  69         {1, 2},
  70         {2, 4},
  71         {3, 8},
  72         {4, 32},
  73         {0, 0},
  74 };
  75
  76 /* Mux clock tables */
  77 static const char * const sel_pll3_3[] = { ".pll3_533", ".pll3_400" };
  78 static const char * const sel_pll6_2[]  = { ".pll6_250", ".pll5_250" };
  79 static const char * const sel_shdi[] = { ".clk_533", ".clk_400", ".clk_266" };
  80
  81 static const struct cpg_core_clk r9a07g043_core_clks[] __initconst = {
  82         /* External Clock Inputs */
  83         DEF_INPUT("extal", CLK_EXTAL),
  84
  85         /* Internal Core Clocks */
  86         DEF_FIXED(".osc", R9A07G043_OSCCLK, CLK_EXTAL, 1, 1),
  87         DEF_FIXED(".osc_div1000", CLK_OSC_DIV1000, CLK_EXTAL, 1, 1000),
  88         DEF_SAMPLL(".pll1", CLK_PLL1, CLK_EXTAL, PLL146_CONF(0)),
  89         DEF_FIXED(".pll2", CLK_PLL2, CLK_EXTAL, 200, 3),
  90         DEF_FIXED(".pll2_div2", CLK_PLL2_DIV2, CLK_PLL2, 1, 2),
  91         DEF_FIXED(".clk_800", CLK_PLL2_800, CLK_PLL2, 1, 2),
  92         DEF_FIXED(".clk_533", CLK_PLL2_SDHI_533, CLK_PLL2, 1, 3),
  93         DEF_FIXED(".clk_400", CLK_PLL2_SDHI_400, CLK_PLL2_800, 1, 2),
  94         DEF_FIXED(".clk_266", CLK_PLL2_SDHI_266, CLK_PLL2_SDHI_533, 1, 2),
  95         DEF_FIXED(".pll2_div2_8", CLK_PLL2_DIV2_8, CLK_PLL2_DIV2, 1, 8),
  96         DEF_FIXED(".pll2_div2_10", CLK_PLL2_DIV2_10, CLK_PLL2_DIV2, 1, 10),
  97         DEF_FIXED(".pll3", CLK_PLL3, CLK_EXTAL, 200, 3),
  98         DEF_FIXED(".pll3_div2", CLK_PLL3_DIV2, CLK_PLL3, 1, 2),
  99         DEF_FIXED(".pll3_div2_4", CLK_PLL3_DIV2_4, CLK_PLL3_DIV2, 1, 4),
 100         DEF_FIXED(".pll3_div2_4_2", CLK_PLL3_DIV2_4_2, CLK_PLL3_DIV2_4, 1, 2),
 101         DEF_FIXED(".pll3_400", CLK_PLL3_400, CLK_PLL3, 1, 4),
 102         DEF_FIXED(".pll3_533", CLK_PLL3_533, CLK_PLL3, 1, 3),
 103         DEF_MUX_RO(".sel_pll3_3", CLK_SEL_PLL3_3, SEL_PLL3_3, sel_pll3_3),
 104         DEF_DIV("divpl3c", CLK_DIV_PLL3_C, CLK_SEL_PLL3_3, DIVPL3C, dtable_1_32),
 105 #ifdef CONFIG_ARM64
 106         DEF_FIXED(".pll5", CLK_PLL5, CLK_EXTAL, 125, 1),
 107         DEF_FIXED(".pll5_500", CLK_PLL5_500, CLK_PLL5, 1, 6),
 108         DEF_FIXED(".pll5_250", CLK_PLL5_250, CLK_PLL5_500, 1, 2),
 109 #endif
 110         DEF_FIXED(".pll6", CLK_PLL6, CLK_EXTAL, 125, 6),
 111         DEF_FIXED(".pll6_250", CLK_PLL6_250, CLK_PLL6, 1, 2),
 112
 113         /* Core output clk */
 114         DEF_DIV("I", R9A07G043_CLK_I, CLK_PLL1, DIVPL1A, dtable_1_8),
 115         DEF_DIV("P0", R9A07G043_CLK_P0, CLK_PLL2_DIV2_8, DIVPL2A, dtable_1_32),
 116         DEF_FIXED("P0_DIV2", R9A07G043_CLK_P0_DIV2, R9A07G043_CLK_P0, 1, 2),
 117         DEF_FIXED("TSU", R9A07G043_CLK_TSU, CLK_PLL2_DIV2_10, 1, 1),
 118         DEF_DIV("P1", R9A07G043_CLK_P1, CLK_PLL3_DIV2_4, DIVPL3B, dtable_1_32),
 119         DEF_FIXED("P1_DIV2", CLK_P1_DIV2, R9A07G043_CLK_P1, 1, 2),
 120         DEF_DIV("P2", R9A07G043_CLK_P2, CLK_PLL3_DIV2_4_2, DIVPL3A, dtable_1_32),
 121         DEF_FIXED("M0", R9A07G043_CLK_M0, CLK_PLL3_DIV2_4, 1, 1),
 122         DEF_FIXED("ZT", R9A07G043_CLK_ZT, CLK_PLL3_DIV2_4_2, 1, 1),
 123         DEF_MUX("HP", R9A07G043_CLK_HP, SEL_PLL6_2, sel_pll6_2),
 124         DEF_FIXED("SPI0", R9A07G043_CLK_SPI0, CLK_DIV_PLL3_C, 1, 2),
 125         DEF_FIXED("SPI1", R9A07G043_CLK_SPI1, CLK_DIV_PLL3_C, 1, 4),
 126         DEF_SD_MUX("SD0", R9A07G043_CLK_SD0, SEL_SDHI0, sel_shdi),
 127         DEF_SD_MUX("SD1", R9A07G043_CLK_SD1, SEL_SDHI1, sel_shdi),
 128         DEF_FIXED("SD0_DIV4", CLK_SD0_DIV4, R9A07G043_CLK_SD0, 1, 4),
 129         DEF_FIXED("SD1_DIV4", CLK_SD1_DIV4, R9A07G043_CLK_SD1, 1, 4),
 130 };
 131
 132 static struct rzg2l_mod_clk r9a07g043_mod_clks[] = {
 133 #ifdef CONFIG_ARM64
 134         DEF_MOD("gic",          R9A07G043_GIC600_GICCLK, R9A07G043_CLK_P1,
 135                                 0x514, 0),
 136         DEF_MOD("ia55_pclk",    R9A07G043_IA55_PCLK, R9A07G043_CLK_P2,
 137                                 0x518, 0),
 138         DEF_MOD("ia55_clk",     R9A07G043_IA55_CLK, R9A07G043_CLK_P1,
 139                                 0x518, 1),
 140 #endif
 141 #ifdef CONFIG_RISCV
 142         DEF_MOD("iax45_pclk",   R9A07G043_IAX45_PCLK, R9A07G043_CLK_P2,
 143                                 0x518, 0),
 144         DEF_MOD("iax45_clk",    R9A07G043_IAX45_CLK, R9A07G043_CLK_P1,
 145                                 0x518, 1),
 146 #endif
 147         DEF_MOD("dmac_aclk",    R9A07G043_DMAC_ACLK, R9A07G043_CLK_P1,
 148                                 0x52c, 0),
 149         DEF_MOD("dmac_pclk",    R9A07G043_DMAC_PCLK, CLK_P1_DIV2,
 150                                 0x52c, 1),
 151         DEF_MOD("ostm0_pclk",   R9A07G043_OSTM0_PCLK, R9A07G043_CLK_P0,
 152                                 0x534, 0),
 153         DEF_MOD("ostm1_pclk",   R9A07G043_OSTM1_PCLK, R9A07G043_CLK_P0,
 154                                 0x534, 1),
 155         DEF_MOD("ostm2_pclk",   R9A07G043_OSTM2_PCLK, R9A07G043_CLK_P0,
 156                                 0x534, 2),
 157         DEF_MOD("wdt0_pclk",    R9A07G043_WDT0_PCLK, R9A07G043_CLK_P0,
 158                                 0x548, 0),
 159         DEF_MOD("wdt0_clk",     R9A07G043_WDT0_CLK, R9A07G043_OSCCLK,
 160                                 0x548, 1),
 161         DEF_MOD("spi_clk2",     R9A07G043_SPI_CLK2, R9A07G043_CLK_SPI1,
 162                                 0x550, 0),
 163         DEF_MOD("spi_clk",      R9A07G043_SPI_CLK, R9A07G043_CLK_SPI0,
 164                                 0x550, 1),
 165         DEF_MOD("sdhi0_imclk",  R9A07G043_SDHI0_IMCLK, CLK_SD0_DIV4,
 166                                 0x554, 0),
 167         DEF_MOD("sdhi0_imclk2", R9A07G043_SDHI0_IMCLK2, CLK_SD0_DIV4,
 168                                 0x554, 1),
 169         DEF_MOD("sdhi0_clk_hs", R9A07G043_SDHI0_CLK_HS, R9A07G043_CLK_SD0,
 170                                 0x554, 2),
 171         DEF_MOD("sdhi0_aclk",   R9A07G043_SDHI0_ACLK, R9A07G043_CLK_P1,
 172                                 0x554, 3),
 173         DEF_MOD("sdhi1_imclk",  R9A07G043_SDHI1_IMCLK, CLK_SD1_DIV4,
 174                                 0x554, 4),
 175         DEF_MOD("sdhi1_imclk2", R9A07G043_SDHI1_IMCLK2, CLK_SD1_DIV4,
 176                                 0x554, 5),
 177         DEF_MOD("sdhi1_clk_hs", R9A07G043_SDHI1_CLK_HS, R9A07G043_CLK_SD1,
 178                                 0x554, 6),
 179         DEF_MOD("sdhi1_aclk",   R9A07G043_SDHI1_ACLK, R9A07G043_CLK_P1,
 180                                 0x554, 7),
 181         DEF_MOD("ssi0_pclk",    R9A07G043_SSI0_PCLK2, R9A07G043_CLK_P0,
 182                                 0x570, 0),
 183         DEF_MOD("ssi0_sfr",     R9A07G043_SSI0_PCLK_SFR, R9A07G043_CLK_P0,
 184                                 0x570, 1),
 185         DEF_MOD("ssi1_pclk",    R9A07G043_SSI1_PCLK2, R9A07G043_CLK_P0,
 186                                 0x570, 2),
 187         DEF_MOD("ssi1_sfr",     R9A07G043_SSI1_PCLK_SFR, R9A07G043_CLK_P0,
 188                                 0x570, 3),
 189         DEF_MOD("ssi2_pclk",    R9A07G043_SSI2_PCLK2, R9A07G043_CLK_P0,
 190                                 0x570, 4),
 191         DEF_MOD("ssi2_sfr",     R9A07G043_SSI2_PCLK_SFR, R9A07G043_CLK_P0,
 192                                 0x570, 5),
 193         DEF_MOD("ssi3_pclk",    R9A07G043_SSI3_PCLK2, R9A07G043_CLK_P0,
 194                                 0x570, 6),
 195         DEF_MOD("ssi3_sfr",     R9A07G043_SSI3_PCLK_SFR, R9A07G043_CLK_P0,
 196                                 0x570, 7),
 197         DEF_MOD("usb0_host",    R9A07G043_USB_U2H0_HCLK, R9A07G043_CLK_P1,
 198                                 0x578, 0),
 199         DEF_MOD("usb1_host",    R9A07G043_USB_U2H1_HCLK, R9A07G043_CLK_P1,
 200                                 0x578, 1),
 201         DEF_MOD("usb0_func",    R9A07G043_USB_U2P_EXR_CPUCLK, R9A07G043_CLK_P1,
 202                                 0x578, 2),
 203         DEF_MOD("usb_pclk",     R9A07G043_USB_PCLK, R9A07G043_CLK_P1,
 204                                 0x578, 3),
 205         DEF_COUPLED("eth0_axi", R9A07G043_ETH0_CLK_AXI, R9A07G043_CLK_M0,
 206                                 0x57c, 0),
 207         DEF_COUPLED("eth0_chi", R9A07G043_ETH0_CLK_CHI, R9A07G043_CLK_ZT,
 208                                 0x57c, 0),
 209         DEF_COUPLED("eth1_axi", R9A07G043_ETH1_CLK_AXI, R9A07G043_CLK_M0,
 210                                 0x57c, 1),
 211         DEF_COUPLED("eth1_chi", R9A07G043_ETH1_CLK_CHI, R9A07G043_CLK_ZT,
 212                                 0x57c, 1),
 213         DEF_MOD("i2c0",         R9A07G043_I2C0_PCLK, R9A07G043_CLK_P0,
 214                                 0x580, 0),
 215         DEF_MOD("i2c1",         R9A07G043_I2C1_PCLK, R9A07G043_CLK_P0,
 216                                 0x580, 1),
 217         DEF_MOD("i2c2",         R9A07G043_I2C2_PCLK, R9A07G043_CLK_P0,
 218                                 0x580, 2),
 219         DEF_MOD("i2c3",         R9A07G043_I2C3_PCLK, R9A07G043_CLK_P0,
 220                                 0x580, 3),
 221         DEF_MOD("scif0",        R9A07G043_SCIF0_CLK_PCK, R9A07G043_CLK_P0,
 222                                 0x584, 0),
 223         DEF_MOD("scif1",        R9A07G043_SCIF1_CLK_PCK, R9A07G043_CLK_P0,
 224                                 0x584, 1),
 225         DEF_MOD("scif2",        R9A07G043_SCIF2_CLK_PCK, R9A07G043_CLK_P0,
 226                                 0x584, 2),
 227         DEF_MOD("scif3",        R9A07G043_SCIF3_CLK_PCK, R9A07G043_CLK_P0,
 228                                 0x584, 3),
 229         DEF_MOD("scif4",        R9A07G043_SCIF4_CLK_PCK, R9A07G043_CLK_P0,
 230                                 0x584, 4),
 231         DEF_MOD("sci0",         R9A07G043_SCI0_CLKP, R9A07G043_CLK_P0,
 232                                 0x588, 0),
 233         DEF_MOD("sci1",         R9A07G043_SCI1_CLKP, R9A07G043_CLK_P0,
 234                                 0x588, 1),
 235         DEF_MOD("rspi0",        R9A07G043_RSPI0_CLKB, R9A07G043_CLK_P0,
 236                                 0x590, 0),
 237         DEF_MOD("rspi1",        R9A07G043_RSPI1_CLKB, R9A07G043_CLK_P0,
 238                                 0x590, 1),
 239         DEF_MOD("rspi2",        R9A07G043_RSPI2_CLKB, R9A07G043_CLK_P0,
 240                                 0x590, 2),
 241         DEF_MOD("canfd",        R9A07G043_CANFD_PCLK, R9A07G043_CLK_P0,
 242                                 0x594, 0),
 243         DEF_MOD("gpio",         R9A07G043_GPIO_HCLK, R9A07G043_OSCCLK,
 244                                 0x598, 0),
 245         DEF_MOD("adc_adclk",    R9A07G043_ADC_ADCLK, R9A07G043_CLK_TSU,
 246                                 0x5a8, 0),
 247         DEF_MOD("adc_pclk",     R9A07G043_ADC_PCLK, R9A07G043_CLK_P0,
 248                                 0x5a8, 1),
 249         DEF_MOD("tsu_pclk",     R9A07G043_TSU_PCLK, R9A07G043_CLK_TSU,
 250                                 0x5ac, 0),
 251 };
 252
 253 static struct rzg2l_reset r9a07g043_resets[] = {
 254 #ifdef CONFIG_ARM64
 255         DEF_RST(R9A07G043_GIC600_GICRESET_N, 0x814, 0),
 256         DEF_RST(R9A07G043_GIC600_DBG_GICRESET_N, 0x814, 1),
 257         DEF_RST(R9A07G043_IA55_RESETN, 0x818, 0),
 258 #endif
 259 #ifdef CONFIG_RISCV
 260         DEF_RST(R9A07G043_IAX45_RESETN, 0x818, 0),
 261 #endif
 262         DEF_RST(R9A07G043_DMAC_ARESETN, 0x82c, 0),
 263         DEF_RST(R9A07G043_DMAC_RST_ASYNC, 0x82c, 1),
 264         DEF_RST(R9A07G043_OSTM0_PRESETZ, 0x834, 0),
 265         DEF_RST(R9A07G043_OSTM1_PRESETZ, 0x834, 1),
 266         DEF_RST(R9A07G043_OSTM2_PRESETZ, 0x834, 2),
 267         DEF_RST(R9A07G043_WDT0_PRESETN, 0x848, 0),
 268         DEF_RST(R9A07G043_SPI_RST, 0x850, 0),
 269         DEF_RST(R9A07G043_SDHI0_IXRST, 0x854, 0),
 270         DEF_RST(R9A07G043_SDHI1_IXRST, 0x854, 1),
 271         DEF_RST(R9A07G043_SSI0_RST_M2_REG, 0x870, 0),
 272         DEF_RST(R9A07G043_SSI1_RST_M2_REG, 0x870, 1),
 273         DEF_RST(R9A07G043_SSI2_RST_M2_REG, 0x870, 2),
 274         DEF_RST(R9A07G043_SSI3_RST_M2_REG, 0x870, 3),
 275         DEF_RST(R9A07G043_USB_U2H0_HRESETN, 0x878, 0),
 276         DEF_RST(R9A07G043_USB_U2H1_HRESETN, 0x878, 1),
 277         DEF_RST(R9A07G043_USB_U2P_EXL_SYSRST, 0x878, 2),
 278         DEF_RST(R9A07G043_USB_PRESETN, 0x878, 3),
 279         DEF_RST(R9A07G043_ETH0_RST_HW_N, 0x87c, 0),
 280         DEF_RST(R9A07G043_ETH1_RST_HW_N, 0x87c, 1),
 281         DEF_RST(R9A07G043_I2C0_MRST, 0x880, 0),
 282         DEF_RST(R9A07G043_I2C1_MRST, 0x880, 1),
 283         DEF_RST(R9A07G043_I2C2_MRST, 0x880, 2),
 284         DEF_RST(R9A07G043_I2C3_MRST, 0x880, 3),
 285         DEF_RST(R9A07G043_SCIF0_RST_SYSTEM_N, 0x884, 0),
 286         DEF_RST(R9A07G043_SCIF1_RST_SYSTEM_N, 0x884, 1),
 287         DEF_RST(R9A07G043_SCIF2_RST_SYSTEM_N, 0x884, 2),
 288         DEF_RST(R9A07G043_SCIF3_RST_SYSTEM_N, 0x884, 3),
 289         DEF_RST(R9A07G043_SCIF4_RST_SYSTEM_N, 0x884, 4),
 290         DEF_RST(R9A07G043_SCI0_RST, 0x888, 0),
 291         DEF_RST(R9A07G043_SCI1_RST, 0x888, 1),
 292         DEF_RST(R9A07G043_RSPI0_RST, 0x890, 0),
 293         DEF_RST(R9A07G043_RSPI1_RST, 0x890, 1),
 294         DEF_RST(R9A07G043_RSPI2_RST, 0x890, 2),
 295         DEF_RST(R9A07G043_CANFD_RSTP_N, 0x894, 0),
 296         DEF_RST(R9A07G043_CANFD_RSTC_N, 0x894, 1),
 297         DEF_RST(R9A07G043_GPIO_RSTN, 0x898, 0),
 298         DEF_RST(R9A07G043_GPIO_PORT_RESETN, 0x898, 1),
 299         DEF_RST(R9A07G043_GPIO_SPARE_RESETN, 0x898, 2),
 300         DEF_RST(R9A07G043_ADC_PRESETN, 0x8a8, 0),
 301         DEF_RST(R9A07G043_ADC_ADRST_N, 0x8a8, 1),
 302         DEF_RST(R9A07G043_TSU_PRESETN, 0x8ac, 0),
 303 };
 304
 305 static const unsigned int r9a07g043_crit_mod_clks[] __initconst = {
 306 #ifdef CONFIG_ARM64
 307         MOD_CLK_BASE + R9A07G043_GIC600_GICCLK,
 308         MOD_CLK_BASE + R9A07G043_IA55_CLK,
 309 #endif
 310 #ifdef CONFIG_RISCV
 311         MOD_CLK_BASE + R9A07G043_IAX45_CLK,
 312 #endif
 313         MOD_CLK_BASE + R9A07G043_DMAC_ACLK,
 314 };
 315
 316 const struct rzg2l_cpg_info r9a07g043_cpg_info = {
 317         /* Core Clocks */
 318         .core_clks = r9a07g043_core_clks,
 319         .num_core_clks = ARRAY_SIZE(r9a07g043_core_clks),
 320         .last_dt_core_clk = LAST_DT_CORE_CLK,
 321         .num_total_core_clks = MOD_CLK_BASE,
 322
 323         /* Critical Module Clocks */
 324         .crit_mod_clks = r9a07g043_crit_mod_clks,
 325         .num_crit_mod_clks = ARRAY_SIZE(r9a07g043_crit_mod_clks),
 326
 327         /* Module Clocks */
 328         .mod_clks = r9a07g043_mod_clks,
 329         .num_mod_clks = ARRAY_SIZE(r9a07g043_mod_clks),
 330 #ifdef CONFIG_ARM64
 331         .num_hw_mod_clks = R9A07G043_TSU_PCLK + 1,
 332 #endif
 333 #ifdef CONFIG_RISCV
 334         .num_hw_mod_clks = R9A07G043_IAX45_PCLK + 1,
 335 #endif
 336
 337         /* Resets */
 338         .resets = r9a07g043_resets,
 339 #ifdef CONFIG_ARM64
 340         .num_resets = R9A07G043_TSU_PRESETN + 1, /* Last reset ID + 1 */
 341 #endif
 342 #ifdef CONFIG_RISCV
 343         .num_resets = R9A07G043_IAX45_RESETN + 1, /* Last reset ID + 1 */
 344 #endif
 345
 346         .has_clk_mon_regs = true,
 347 };