1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Copyright (C) 2017, Intel Corporation 4 */ 5 #include <linux/slab.h> 6 #include <linux/clk-provider.h> 7 #include <linux/of_device.h> 8 #include <linux/of_address.h> 9 #include <linux/platform_device.h> 10 11 #include <dt-bindings/clock/stratix10-clock.h> 12 13 #include "stratix10-clk.h" 14 15 static const struct clk_parent_data pll_mux[] = { 16 { .fw_name = "osc1", 17 .name = "osc1" }, 18 { .fw_name = "cb-intosc-hs-div2-clk", 19 .name = "cb-intosc-hs-div2-clk" }, 20 { .fw_name = "f2s-free-clk", 21 .name = "f2s-free-clk" }, 22 }; 23 24 static const struct clk_parent_data cntr_mux[] = { 25 { .fw_name = "main_pll", 26 .name = "main_pll", }, 27 { .fw_name = "periph_pll", 28 .name = "periph_pll", }, 29 { .fw_name = "osc1", 30 .name = "osc1", }, 31 { .fw_name = "cb-intosc-hs-div2-clk", 32 .name = "cb-intosc-hs-div2-clk", }, 33 { .fw_name = "f2s-free-clk", 34 .name = "f2s-free-clk", }, 35 }; 36 37 static const struct clk_parent_data boot_mux[] = { 38 { .fw_name = "osc1", 39 .name = "osc1" }, 40 { .fw_name = "cb-intosc-hs-div2-clk", 41 .name = "cb-intosc-hs-div2-clk" }, 42 }; 43 44 static const struct clk_parent_data noc_free_mux[] = { 45 { .fw_name = "main_noc_base_clk", 46 .name = "main_noc_base_clk", }, 47 { .fw_name = "peri_noc_base_clk", 48 .name = "peri_noc_base_clk", }, 49 { .fw_name = "osc1", 50 .name = "osc1", }, 51 { .fw_name = "cb-intosc-hs-div2-clk", 52 .name = "cb-intosc-hs-div2-clk", }, 53 { .fw_name = "f2s-free-clk", 54 .name = "f2s-free-clk", }, 55 }; 56 57 static const struct clk_parent_data emaca_free_mux[] = { 58 { .fw_name = "peri_emaca_clk", 59 .name = "peri_emaca_clk", }, 60 { .fw_name = "boot_clk", 61 .name = "boot_clk", }, 62 }; 63 64 static const struct clk_parent_data emacb_free_mux[] = { 65 { .fw_name = "peri_emacb_clk", 66 .name = "peri_emacb_clk", }, 67 { .fw_name = "boot_clk", 68 .name = "boot_clk", }, 69 }; 70 71 static const struct clk_parent_data emac_ptp_free_mux[] = { 72 { .fw_name = "peri_emac_ptp_clk", 73 .name = "peri_emac_ptp_clk", }, 74 { .fw_name = "boot_clk", 75 .name = "boot_clk", }, 76 }; 77 78 static const struct clk_parent_data gpio_db_free_mux[] = { 79 { .fw_name = "peri_gpio_db_clk", 80 .name = "peri_gpio_db_clk", }, 81 { .fw_name = "boot_clk", 82 .name = "boot_clk", }, 83 }; 84 85 static const struct clk_parent_data sdmmc_free_mux[] = { 86 { .fw_name = "main_sdmmc_clk", 87 .name = "main_sdmmc_clk", }, 88 { .fw_name = "boot_clk", 89 .name = "boot_clk", }, 90 }; 91 92 static const struct clk_parent_data s2f_usr1_free_mux[] = { 93 { .fw_name = "peri_s2f_usr1_clk", 94 .name = "peri_s2f_usr1_clk", }, 95 { .fw_name = "boot_clk", 96 .name = "boot_clk", }, 97 }; 98 99 static const struct clk_parent_data psi_ref_free_mux[] = { 100 { .fw_name = "peri_psi_ref_clk", 101 .name = "peri_psi_ref_clk", }, 102 { .fw_name = "boot_clk", 103 .name = "boot_clk", }, 104 }; 105 106 static const struct clk_parent_data mpu_mux[] = { 107 { .fw_name = "mpu_free_clk", 108 .name = "mpu_free_clk", }, 109 { .fw_name = "boot_clk", 110 .name = "boot_clk", }, 111 }; 112 113 static const struct clk_parent_data s2f_usr0_mux[] = { 114 { .fw_name = "f2s-free-clk", 115 .name = "f2s-free-clk", }, 116 { .fw_name = "boot_clk", 117 .name = "boot_clk", }, 118 }; 119 120 static const struct clk_parent_data emac_mux[] = { 121 { .fw_name = "emaca_free_clk", 122 .name = "emaca_free_clk", }, 123 { .fw_name = "emacb_free_clk", 124 .name = "emacb_free_clk", }, 125 }; 126 127 static const struct clk_parent_data noc_mux[] = { 128 { .fw_name = "noc_free_clk", 129 .name = "noc_free_clk", }, 130 { .fw_name = "boot_clk", 131 .name = "boot_clk", }, 132 }; 133 134 static const struct clk_parent_data mpu_free_mux[] = { 135 { .fw_name = "main_mpu_base_clk", 136 .name = "main_mpu_base_clk", }, 137 { .fw_name = "peri_mpu_base_clk", 138 .name = "peri_mpu_base_clk", }, 139 { .fw_name = "osc1", 140 .name = "osc1", }, 141 { .fw_name = "cb-intosc-hs-div2-clk", 142 .name = "cb-intosc-hs-div2-clk", }, 143 { .fw_name = "f2s-free-clk", 144 .name = "f2s-free-clk", }, 145 }; 146 147 static const struct clk_parent_data sdmmc_mux[] = { 148 { .fw_name = "sdmmc_free_clk", 149 .name = "sdmmc_free_clk", }, 150 { .fw_name = "boot_clk", 151 .name = "boot_clk", }, 152 }; 153 154 static const struct clk_parent_data s2f_user1_mux[] = { 155 { .fw_name = "s2f_user1_free_clk", 156 .name = "s2f_user1_free_clk", }, 157 { .fw_name = "boot_clk", 158 .name = "boot_clk", }, 159 }; 160 161 static const struct clk_parent_data psi_mux[] = { 162 { .fw_name = "psi_ref_free_clk", 163 .name = "psi_ref_free_clk", }, 164 { .fw_name = "boot_clk", 165 .name = "boot_clk", }, 166 }; 167 168 static const struct clk_parent_data gpio_db_mux[] = { 169 { .fw_name = "gpio_db_free_clk", 170 .name = "gpio_db_free_clk", }, 171 { .fw_name = "boot_clk", 172 .name = "boot_clk", }, 173 }; 174 175 static const struct clk_parent_data emac_ptp_mux[] = { 176 { .fw_name = "emac_ptp_free_clk", 177 .name = "emac_ptp_free_clk", }, 178 { .fw_name = "boot_clk", 179 .name = "boot_clk", }, 180 }; 181 182 /* clocks in AO (always on) controller */ 183 static const struct stratix10_pll_clock s10_pll_clks[] = { 184 { STRATIX10_BOOT_CLK, "boot_clk", boot_mux, ARRAY_SIZE(boot_mux), 0, 185 0x0}, 186 { STRATIX10_MAIN_PLL_CLK, "main_pll", pll_mux, ARRAY_SIZE(pll_mux), 187 0, 0x74}, 188 { STRATIX10_PERIPH_PLL_CLK, "periph_pll", pll_mux, ARRAY_SIZE(pll_mux), 189 0, 0xe4}, 190 }; 191 192 static const struct stratix10_perip_c_clock s10_main_perip_c_clks[] = { 193 { STRATIX10_MAIN_MPU_BASE_CLK, "main_mpu_base_clk", "main_pll", NULL, 1, 0, 0x84}, 194 { STRATIX10_MAIN_NOC_BASE_CLK, "main_noc_base_clk", "main_pll", NULL, 1, 0, 0x88}, 195 { STRATIX10_PERI_MPU_BASE_CLK, "peri_mpu_base_clk", "periph_pll", NULL, 1, 0, 196 0xF4}, 197 { STRATIX10_PERI_NOC_BASE_CLK, "peri_noc_base_clk", "periph_pll", NULL, 1, 0, 198 0xF8}, 199 }; 200 201 static const struct stratix10_perip_cnt_clock s10_main_perip_cnt_clks[] = { 202 { STRATIX10_MPU_FREE_CLK, "mpu_free_clk", NULL, mpu_free_mux, ARRAY_SIZE(mpu_free_mux), 203 0, 0x48, 0, 0, 0}, 204 { STRATIX10_NOC_FREE_CLK, "noc_free_clk", NULL, noc_free_mux, ARRAY_SIZE(noc_free_mux), 205 0, 0x4C, 0, 0x3C, 1}, 206 { STRATIX10_MAIN_EMACA_CLK, "main_emaca_clk", "main_noc_base_clk", NULL, 1, 0, 207 0x50, 0, 0, 0}, 208 { STRATIX10_MAIN_EMACB_CLK, "main_emacb_clk", "main_noc_base_clk", NULL, 1, 0, 209 0x54, 0, 0, 0}, 210 { STRATIX10_MAIN_EMAC_PTP_CLK, "main_emac_ptp_clk", "main_noc_base_clk", NULL, 1, 0, 211 0x58, 0, 0, 0}, 212 { STRATIX10_MAIN_GPIO_DB_CLK, "main_gpio_db_clk", "main_noc_base_clk", NULL, 1, 0, 213 0x5C, 0, 0, 0}, 214 { STRATIX10_MAIN_SDMMC_CLK, "main_sdmmc_clk", "main_noc_base_clk", NULL, 1, 0, 215 0x60, 0, 0, 0}, 216 { STRATIX10_MAIN_S2F_USR0_CLK, "main_s2f_usr0_clk", NULL, cntr_mux, ARRAY_SIZE(cntr_mux), 217 0, 0x64, 0, 0, 0}, 218 { STRATIX10_MAIN_S2F_USR1_CLK, "main_s2f_usr1_clk", "main_noc_base_clk", NULL, 1, 0, 219 0x68, 0, 0, 0}, 220 { STRATIX10_MAIN_PSI_REF_CLK, "main_psi_ref_clk", "main_noc_base_clk", NULL, 1, 0, 221 0x6C, 0, 0, 0}, 222 { STRATIX10_PERI_EMACA_CLK, "peri_emaca_clk", NULL, cntr_mux, ARRAY_SIZE(cntr_mux), 223 0, 0xBC, 0, 0, 0}, 224 { STRATIX10_PERI_EMACB_CLK, "peri_emacb_clk", NULL, cntr_mux, ARRAY_SIZE(cntr_mux), 225 0, 0xC0, 0, 0, 0}, 226 { STRATIX10_PERI_EMAC_PTP_CLK, "peri_emac_ptp_clk", NULL, cntr_mux, ARRAY_SIZE(cntr_mux), 227 0, 0xC4, 0, 0, 0}, 228 { STRATIX10_PERI_GPIO_DB_CLK, "peri_gpio_db_clk", NULL, cntr_mux, ARRAY_SIZE(cntr_mux), 229 0, 0xC8, 0, 0, 0}, 230 { STRATIX10_PERI_SDMMC_CLK, "peri_sdmmc_clk", NULL, cntr_mux, ARRAY_SIZE(cntr_mux), 231 0, 0xCC, 0, 0, 0}, 232 { STRATIX10_PERI_S2F_USR0_CLK, "peri_s2f_usr0_clk", "peri_noc_base_clk", NULL, 1, 0, 233 0xD0, 0, 0, 0}, 234 { STRATIX10_PERI_S2F_USR1_CLK, "peri_s2f_usr1_clk", NULL, cntr_mux, ARRAY_SIZE(cntr_mux), 235 0, 0xD4, 0, 0, 0}, 236 { STRATIX10_PERI_PSI_REF_CLK, "peri_psi_ref_clk", "peri_noc_base_clk", NULL, 1, 0, 237 0xD8, 0, 0, 0}, 238 { STRATIX10_L4_SYS_FREE_CLK, "l4_sys_free_clk", NULL, noc_mux, ARRAY_SIZE(noc_mux), 0, 239 0, 4, 0x3C, 1}, 240 { STRATIX10_EMAC_A_FREE_CLK, "emaca_free_clk", NULL, emaca_free_mux, ARRAY_SIZE(emaca_free_mux), 241 0, 0, 2, 0xB0, 0}, 242 { STRATIX10_EMAC_B_FREE_CLK, "emacb_free_clk", NULL, emacb_free_mux, ARRAY_SIZE(emacb_free_mux), 243 0, 0, 2, 0xB0, 1}, 244 { STRATIX10_EMAC_PTP_FREE_CLK, "emac_ptp_free_clk", NULL, emac_ptp_free_mux, 245 ARRAY_SIZE(emac_ptp_free_mux), 0, 0, 2, 0xB0, 2}, 246 { STRATIX10_GPIO_DB_FREE_CLK, "gpio_db_free_clk", NULL, gpio_db_free_mux, 247 ARRAY_SIZE(gpio_db_free_mux), 0, 0, 0, 0xB0, 3}, 248 { STRATIX10_SDMMC_FREE_CLK, "sdmmc_free_clk", NULL, sdmmc_free_mux, 249 ARRAY_SIZE(sdmmc_free_mux), 0, 0, 0, 0xB0, 4}, 250 { STRATIX10_S2F_USER1_FREE_CLK, "s2f_user1_free_clk", NULL, s2f_usr1_free_mux, 251 ARRAY_SIZE(s2f_usr1_free_mux), 0, 0, 0, 0xB0, 5}, 252 { STRATIX10_PSI_REF_FREE_CLK, "psi_ref_free_clk", NULL, psi_ref_free_mux, 253 ARRAY_SIZE(psi_ref_free_mux), 0, 0, 0, 0xB0, 6}, 254 }; 255 256 static const struct stratix10_gate_clock s10_gate_clks[] = { 257 { STRATIX10_MPU_CLK, "mpu_clk", NULL, mpu_mux, ARRAY_SIZE(mpu_mux), 0, 0x30, 258 0, 0, 0, 0, 0x3C, 0, 0}, 259 { STRATIX10_MPU_PERIPH_CLK, "mpu_periph_clk", "mpu_clk", NULL, 1, 0, 0x30, 260 0, 0, 0, 0, 0, 0, 4}, 261 { STRATIX10_MPU_L2RAM_CLK, "mpu_l2ram_clk", "mpu_clk", NULL, 1, 0, 0x30, 262 0, 0, 0, 0, 0, 0, 2}, 263 { STRATIX10_L4_MAIN_CLK, "l4_main_clk", NULL, noc_mux, ARRAY_SIZE(noc_mux), 0, 0x30, 264 1, 0x70, 0, 2, 0x3C, 1, 0}, 265 { STRATIX10_L4_MP_CLK, "l4_mp_clk", NULL, noc_mux, ARRAY_SIZE(noc_mux), 0, 0x30, 266 2, 0x70, 8, 2, 0x3C, 1, 0}, 267 { STRATIX10_L4_SP_CLK, "l4_sp_clk", NULL, noc_mux, ARRAY_SIZE(noc_mux), CLK_IS_CRITICAL, 0x30, 268 3, 0x70, 16, 2, 0x3C, 1, 0}, 269 { STRATIX10_CS_AT_CLK, "cs_at_clk", NULL, noc_mux, ARRAY_SIZE(noc_mux), 0, 0x30, 270 4, 0x70, 24, 2, 0x3C, 1, 0}, 271 { STRATIX10_CS_TRACE_CLK, "cs_trace_clk", NULL, noc_mux, ARRAY_SIZE(noc_mux), 0, 0x30, 272 4, 0x70, 26, 2, 0x3C, 1, 0}, 273 { STRATIX10_CS_PDBG_CLK, "cs_pdbg_clk", "cs_at_clk", NULL, 1, 0, 0x30, 274 4, 0x70, 28, 1, 0, 0, 0}, 275 { STRATIX10_CS_TIMER_CLK, "cs_timer_clk", NULL, noc_mux, ARRAY_SIZE(noc_mux), 0, 0x30, 276 5, 0, 0, 0, 0x3C, 1, 0}, 277 { STRATIX10_S2F_USER0_CLK, "s2f_user0_clk", NULL, s2f_usr0_mux, ARRAY_SIZE(s2f_usr0_mux), 0, 0x30, 278 6, 0, 0, 0, 0, 0, 0}, 279 { STRATIX10_EMAC0_CLK, "emac0_clk", NULL, emac_mux, ARRAY_SIZE(emac_mux), 0, 0xA4, 280 0, 0, 0, 0, 0xDC, 26, 0}, 281 { STRATIX10_EMAC1_CLK, "emac1_clk", NULL, emac_mux, ARRAY_SIZE(emac_mux), 0, 0xA4, 282 1, 0, 0, 0, 0xDC, 27, 0}, 283 { STRATIX10_EMAC2_CLK, "emac2_clk", NULL, emac_mux, ARRAY_SIZE(emac_mux), 0, 0xA4, 284 2, 0, 0, 0, 0xDC, 28, 0}, 285 { STRATIX10_EMAC_PTP_CLK, "emac_ptp_clk", NULL, emac_ptp_mux, ARRAY_SIZE(emac_ptp_mux), 0, 0xA4, 286 3, 0, 0, 0, 0xB0, 2, 0}, 287 { STRATIX10_GPIO_DB_CLK, "gpio_db_clk", NULL, gpio_db_mux, ARRAY_SIZE(gpio_db_mux), 0, 0xA4, 288 4, 0xE0, 0, 16, 0xB0, 3, 0}, 289 { STRATIX10_SDMMC_CLK, "sdmmc_clk", NULL, sdmmc_mux, ARRAY_SIZE(sdmmc_mux), 0, 0xA4, 290 5, 0, 0, 0, 0xB0, 4, 4}, 291 { STRATIX10_S2F_USER1_CLK, "s2f_user1_clk", NULL, s2f_user1_mux, ARRAY_SIZE(s2f_user1_mux), 0, 0xA4, 292 6, 0, 0, 0, 0xB0, 5, 0}, 293 { STRATIX10_PSI_REF_CLK, "psi_ref_clk", NULL, psi_mux, ARRAY_SIZE(psi_mux), 0, 0xA4, 294 7, 0, 0, 0, 0xB0, 6, 0}, 295 { STRATIX10_USB_CLK, "usb_clk", "l4_mp_clk", NULL, 1, 0, 0xA4, 296 8, 0, 0, 0, 0, 0, 0}, 297 { STRATIX10_SPI_M_CLK, "spi_m_clk", "l4_mp_clk", NULL, 1, 0, 0xA4, 298 9, 0, 0, 0, 0, 0, 0}, 299 { STRATIX10_NAND_X_CLK, "nand_x_clk", "l4_mp_clk", NULL, 1, 0, 0xA4, 300 10, 0, 0, 0, 0, 0, 0}, 301 { STRATIX10_NAND_CLK, "nand_clk", "nand_x_clk", NULL, 1, 0, 0xA4, 302 10, 0, 0, 0, 0, 0, 4}, 303 { STRATIX10_NAND_ECC_CLK, "nand_ecc_clk", "nand_x_clk", NULL, 1, 0, 0xA4, 304 10, 0, 0, 0, 0, 0, 4}, 305 }; 306 307 static int s10_clk_register_c_perip(const struct stratix10_perip_c_clock *clks, 308 int nums, struct stratix10_clock_data *data) 309 { 310 struct clk_hw *hw_clk; 311 void __iomem *base = data->base; 312 int i; 313 314 for (i = 0; i < nums; i++) { 315 hw_clk = s10_register_periph(&clks[i], base); 316 if (IS_ERR(hw_clk)) { 317 pr_err("%s: failed to register clock %s\n", 318 __func__, clks[i].name); 319 continue; 320 } 321 data->clk_data.hws[clks[i].id] = hw_clk; 322 } 323 return 0; 324 } 325 326 static int s10_clk_register_cnt_perip(const struct stratix10_perip_cnt_clock *clks, 327 int nums, struct stratix10_clock_data *data) 328 { 329 struct clk_hw *hw_clk; 330 void __iomem *base = data->base; 331 int i; 332 333 for (i = 0; i < nums; i++) { 334 hw_clk = s10_register_cnt_periph(&clks[i], base); 335 if (IS_ERR(hw_clk)) { 336 pr_err("%s: failed to register clock %s\n", 337 __func__, clks[i].name); 338 continue; 339 } 340 data->clk_data.hws[clks[i].id] = hw_clk; 341 } 342 343 return 0; 344 } 345 346 static int s10_clk_register_gate(const struct stratix10_gate_clock *clks, 347 int nums, struct stratix10_clock_data *data) 348 { 349 struct clk_hw *hw_clk; 350 void __iomem *base = data->base; 351 int i; 352 353 for (i = 0; i < nums; i++) { 354 hw_clk = s10_register_gate(&clks[i], base); 355 if (IS_ERR(hw_clk)) { 356 pr_err("%s: failed to register clock %s\n", 357 __func__, clks[i].name); 358 continue; 359 } 360 data->clk_data.hws[clks[i].id] = hw_clk; 361 } 362 363 return 0; 364 } 365 366 static int s10_clk_register_pll(const struct stratix10_pll_clock *clks, 367 int nums, struct stratix10_clock_data *data) 368 { 369 struct clk_hw *hw_clk; 370 void __iomem *base = data->base; 371 int i; 372 373 for (i = 0; i < nums; i++) { 374 hw_clk = s10_register_pll(&clks[i], base); 375 if (IS_ERR(hw_clk)) { 376 pr_err("%s: failed to register clock %s\n", 377 __func__, clks[i].name); 378 continue; 379 } 380 data->clk_data.hws[clks[i].id] = hw_clk; 381 } 382 383 return 0; 384 } 385 386 static int s10_clkmgr_init(struct platform_device *pdev) 387 { 388 struct device_node *np = pdev->dev.of_node; 389 struct device *dev = &pdev->dev; 390 struct stratix10_clock_data *clk_data; 391 struct resource *res; 392 void __iomem *base; 393 int i, num_clks; 394 395 res = platform_get_resource(pdev, IORESOURCE_MEM, 0); 396 base = devm_ioremap_resource(dev, res); 397 if (IS_ERR(base)) { 398 pr_err("%s: failed to map clock registers\n", __func__); 399 return PTR_ERR(base); 400 } 401 402 num_clks = STRATIX10_NUM_CLKS; 403 clk_data = devm_kzalloc(dev, struct_size(clk_data, clk_data.hws, 404 num_clks), GFP_KERNEL); 405 if (!clk_data) 406 return -ENOMEM; 407 408 for (i = 0; i < num_clks; i++) 409 clk_data->clk_data.hws[i] = ERR_PTR(-ENOENT); 410 411 clk_data->base = base; 412 clk_data->clk_data.num = num_clks; 413 414 s10_clk_register_pll(s10_pll_clks, ARRAY_SIZE(s10_pll_clks), clk_data); 415 416 s10_clk_register_c_perip(s10_main_perip_c_clks, 417 ARRAY_SIZE(s10_main_perip_c_clks), clk_data); 418 419 s10_clk_register_cnt_perip(s10_main_perip_cnt_clks, 420 ARRAY_SIZE(s10_main_perip_cnt_clks), 421 clk_data); 422 423 s10_clk_register_gate(s10_gate_clks, ARRAY_SIZE(s10_gate_clks), 424 clk_data); 425 426 of_clk_add_hw_provider(np, of_clk_hw_onecell_get, &clk_data->clk_data); 427 return 0; 428 } 429 430 static int s10_clkmgr_probe(struct platform_device *pdev) 431 { 432 return s10_clkmgr_init(pdev); 433 } 434 435 static const struct of_device_id stratix10_clkmgr_match_table[] = { 436 { .compatible = "intel,stratix10-clkmgr", 437 .data = s10_clkmgr_init }, 438 { } 439 }; 440 441 static struct platform_driver stratix10_clkmgr_driver = { 442 .probe = s10_clkmgr_probe, 443 .driver = { 444 .name = "stratix10-clkmgr", 445 .suppress_bind_attrs = true, 446 .of_match_table = stratix10_clkmgr_match_table, 447 }, 448 }; 449 450 static int __init s10_clk_init(void) 451 { 452 return platform_driver_register(&stratix10_clkmgr_driver); 453 } 454 core_initcall(s10_clk_init); 455