1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Copyright (C) 2019, 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/agilex-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 mpu_free_mux[] = { 45 { .fw_name = "main_pll_c0", 46 .name = "main_pll_c0", }, 47 { .fw_name = "peri_pll_c0", 48 .name = "peri_pll_c0", }, 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 noc_free_mux[] = { 58 { .fw_name = "main_pll_c1", 59 .name = "main_pll_c1", }, 60 { .fw_name = "peri_pll_c1", 61 .name = "peri_pll_c1", }, 62 { .fw_name = "osc1", 63 .name = "osc1", }, 64 { .fw_name = "cb-intosc-hs-div2-clk", 65 .name = "cb-intosc-hs-div2-clk", }, 66 { .fw_name = "f2s-free-clk", 67 .name = "f2s-free-clk", }, 68 }; 69 70 static const struct clk_parent_data emaca_free_mux[] = { 71 { .fw_name = "main_pll_c2", 72 .name = "main_pll_c2", }, 73 { .fw_name = "peri_pll_c2", 74 .name = "peri_pll_c2", }, 75 { .fw_name = "osc1", 76 .name = "osc1", }, 77 { .fw_name = "cb-intosc-hs-div2-clk", 78 .name = "cb-intosc-hs-div2-clk", }, 79 { .fw_name = "f2s-free-clk", 80 .name = "f2s-free-clk", }, 81 }; 82 83 static const struct clk_parent_data emacb_free_mux[] = { 84 { .fw_name = "main_pll_c3", 85 .name = "main_pll_c3", }, 86 { .fw_name = "peri_pll_c3", 87 .name = "peri_pll_c3", }, 88 { .fw_name = "osc1", 89 .name = "osc1", }, 90 { .fw_name = "cb-intosc-hs-div2-clk", 91 .name = "cb-intosc-hs-div2-clk", }, 92 { .fw_name = "f2s-free-clk", 93 .name = "f2s-free-clk", }, 94 }; 95 96 static const struct clk_parent_data emac_ptp_free_mux[] = { 97 { .fw_name = "main_pll_c3", 98 .name = "main_pll_c3", }, 99 { .fw_name = "peri_pll_c3", 100 .name = "peri_pll_c3", }, 101 { .fw_name = "osc1", 102 .name = "osc1", }, 103 { .fw_name = "cb-intosc-hs-div2-clk", 104 .name = "cb-intosc-hs-div2-clk", }, 105 { .fw_name = "f2s-free-clk", 106 .name = "f2s-free-clk", }, 107 }; 108 109 static const struct clk_parent_data gpio_db_free_mux[] = { 110 { .fw_name = "main_pll_c3", 111 .name = "main_pll_c3", }, 112 { .fw_name = "peri_pll_c3", 113 .name = "peri_pll_c3", }, 114 { .fw_name = "osc1", 115 .name = "osc1", }, 116 { .fw_name = "cb-intosc-hs-div2-clk", 117 .name = "cb-intosc-hs-div2-clk", }, 118 { .fw_name = "f2s-free-clk", 119 .name = "f2s-free-clk", }, 120 }; 121 122 static const struct clk_parent_data psi_ref_free_mux[] = { 123 { .fw_name = "main_pll_c3", 124 .name = "main_pll_c3", }, 125 { .fw_name = "peri_pll_c3", 126 .name = "peri_pll_c3", }, 127 { .fw_name = "osc1", 128 .name = "osc1", }, 129 { .fw_name = "cb-intosc-hs-div2-clk", 130 .name = "cb-intosc-hs-div2-clk", }, 131 { .fw_name = "f2s-free-clk", 132 .name = "f2s-free-clk", }, 133 }; 134 135 static const struct clk_parent_data sdmmc_free_mux[] = { 136 { .fw_name = "main_pll_c3", 137 .name = "main_pll_c3", }, 138 { .fw_name = "peri_pll_c3", 139 .name = "peri_pll_c3", }, 140 { .fw_name = "osc1", 141 .name = "osc1", }, 142 { .fw_name = "cb-intosc-hs-div2-clk", 143 .name = "cb-intosc-hs-div2-clk", }, 144 { .fw_name = "f2s-free-clk", 145 .name = "f2s-free-clk", }, 146 }; 147 148 static const struct clk_parent_data s2f_usr0_free_mux[] = { 149 { .fw_name = "main_pll_c2", 150 .name = "main_pll_c2", }, 151 { .fw_name = "peri_pll_c2", 152 .name = "peri_pll_c2", }, 153 { .fw_name = "osc1", 154 .name = "osc1", }, 155 { .fw_name = "cb-intosc-hs-div2-clk", 156 .name = "cb-intosc-hs-div2-clk", }, 157 { .fw_name = "f2s-free-clk", 158 .name = "f2s-free-clk", }, 159 }; 160 161 static const struct clk_parent_data s2f_usr1_free_mux[] = { 162 { .fw_name = "main_pll_c2", 163 .name = "main_pll_c2", }, 164 { .fw_name = "peri_pll_c2", 165 .name = "peri_pll_c2", }, 166 { .fw_name = "osc1", 167 .name = "osc1", }, 168 { .fw_name = "cb-intosc-hs-div2-clk", 169 .name = "cb-intosc-hs-div2-clk", }, 170 { .fw_name = "f2s-free-clk", 171 .name = "f2s-free-clk", }, 172 }; 173 174 static const struct clk_parent_data mpu_mux[] = { 175 { .fw_name = "mpu_free_clk", 176 .name = "mpu_free_clk", }, 177 { .fw_name = "boot_clk", 178 .name = "boot_clk", }, 179 }; 180 181 static const struct clk_parent_data s2f_usr0_mux[] = { 182 { .fw_name = "f2s-free-clk", 183 .name = "f2s-free-clk", }, 184 { .fw_name = "boot_clk", 185 .name = "boot_clk", }, 186 }; 187 188 static const struct clk_parent_data emac_mux[] = { 189 { .fw_name = "emaca_free_clk", 190 .name = "emaca_free_clk", }, 191 { .fw_name = "emacb_free_clk", 192 .name = "emacb_free_clk", }, 193 }; 194 195 static const struct clk_parent_data noc_mux[] = { 196 { .fw_name = "noc_free_clk", 197 .name = "noc_free_clk", }, 198 { .fw_name = "boot_clk", 199 .name = "boot_clk", }, 200 }; 201 202 /* clocks in AO (always on) controller */ 203 static const struct stratix10_pll_clock agilex_pll_clks[] = { 204 { AGILEX_BOOT_CLK, "boot_clk", boot_mux, ARRAY_SIZE(boot_mux), 0, 205 0x0}, 206 { AGILEX_MAIN_PLL_CLK, "main_pll", pll_mux, ARRAY_SIZE(pll_mux), 207 0, 0x48}, 208 { AGILEX_PERIPH_PLL_CLK, "periph_pll", pll_mux, ARRAY_SIZE(pll_mux), 209 0, 0x9c}, 210 }; 211 212 static const struct stratix10_perip_c_clock agilex_main_perip_c_clks[] = { 213 { AGILEX_MAIN_PLL_C0_CLK, "main_pll_c0", "main_pll", NULL, 1, 0, 0x58}, 214 { AGILEX_MAIN_PLL_C1_CLK, "main_pll_c1", "main_pll", NULL, 1, 0, 0x5C}, 215 { AGILEX_MAIN_PLL_C2_CLK, "main_pll_c2", "main_pll", NULL, 1, 0, 0x64}, 216 { AGILEX_MAIN_PLL_C3_CLK, "main_pll_c3", "main_pll", NULL, 1, 0, 0x68}, 217 { AGILEX_PERIPH_PLL_C0_CLK, "peri_pll_c0", "periph_pll", NULL, 1, 0, 0xAC}, 218 { AGILEX_PERIPH_PLL_C1_CLK, "peri_pll_c1", "periph_pll", NULL, 1, 0, 0xB0}, 219 { AGILEX_PERIPH_PLL_C2_CLK, "peri_pll_c2", "periph_pll", NULL, 1, 0, 0xB8}, 220 { AGILEX_PERIPH_PLL_C3_CLK, "peri_pll_c3", "periph_pll", NULL, 1, 0, 0xBC}, 221 }; 222 223 static const struct stratix10_perip_cnt_clock agilex_main_perip_cnt_clks[] = { 224 { AGILEX_MPU_FREE_CLK, "mpu_free_clk", NULL, mpu_free_mux, ARRAY_SIZE(mpu_free_mux), 225 0, 0x3C, 0, 0, 0}, 226 { AGILEX_NOC_FREE_CLK, "noc_free_clk", NULL, noc_free_mux, ARRAY_SIZE(noc_free_mux), 227 0, 0x40, 0, 0, 1}, 228 { AGILEX_L4_SYS_FREE_CLK, "l4_sys_free_clk", "noc_free_clk", NULL, 1, 0, 229 0, 4, 0, 0}, 230 { AGILEX_NOC_CLK, "noc_clk", NULL, noc_mux, ARRAY_SIZE(noc_mux), 231 0, 0, 0, 0x30, 1}, 232 { AGILEX_EMAC_A_FREE_CLK, "emaca_free_clk", NULL, emaca_free_mux, ARRAY_SIZE(emaca_free_mux), 233 0, 0xD4, 0, 0x88, 0}, 234 { AGILEX_EMAC_B_FREE_CLK, "emacb_free_clk", NULL, emacb_free_mux, ARRAY_SIZE(emacb_free_mux), 235 0, 0xD8, 0, 0x88, 1}, 236 { AGILEX_EMAC_PTP_FREE_CLK, "emac_ptp_free_clk", NULL, emac_ptp_free_mux, 237 ARRAY_SIZE(emac_ptp_free_mux), 0, 0xDC, 0, 0x88, 2}, 238 { AGILEX_GPIO_DB_FREE_CLK, "gpio_db_free_clk", NULL, gpio_db_free_mux, 239 ARRAY_SIZE(gpio_db_free_mux), 0, 0xE0, 0, 0x88, 3}, 240 { AGILEX_SDMMC_FREE_CLK, "sdmmc_free_clk", NULL, sdmmc_free_mux, 241 ARRAY_SIZE(sdmmc_free_mux), 0, 0xE4, 0, 0x88, 4}, 242 { AGILEX_S2F_USER0_FREE_CLK, "s2f_user0_free_clk", NULL, s2f_usr0_free_mux, 243 ARRAY_SIZE(s2f_usr0_free_mux), 0, 0xE8, 0, 0, 0}, 244 { AGILEX_S2F_USER1_FREE_CLK, "s2f_user1_free_clk", NULL, s2f_usr1_free_mux, 245 ARRAY_SIZE(s2f_usr1_free_mux), 0, 0xEC, 0, 0x88, 5}, 246 { AGILEX_PSI_REF_FREE_CLK, "psi_ref_free_clk", NULL, psi_ref_free_mux, 247 ARRAY_SIZE(psi_ref_free_mux), 0, 0xF0, 0, 0x88, 6}, 248 }; 249 250 static const struct stratix10_gate_clock agilex_gate_clks[] = { 251 { AGILEX_MPU_CLK, "mpu_clk", NULL, mpu_mux, ARRAY_SIZE(mpu_mux), 0, 0x24, 252 0, 0, 0, 0, 0x30, 0, 0}, 253 { AGILEX_MPU_PERIPH_CLK, "mpu_periph_clk", "mpu_clk", NULL, 1, 0, 0x24, 254 0, 0, 0, 0, 0, 0, 4}, 255 { AGILEX_MPU_L2RAM_CLK, "mpu_l2ram_clk", "mpu_clk", NULL, 1, 0, 0x24, 256 0, 0, 0, 0, 0, 0, 2}, 257 { AGILEX_L4_MAIN_CLK, "l4_main_clk", "noc_clk", NULL, 1, 0, 0x24, 258 1, 0x44, 0, 2, 0, 0, 0}, 259 { AGILEX_L4_MP_CLK, "l4_mp_clk", "noc_clk", NULL, 1, 0, 0x24, 260 2, 0x44, 8, 2, 0, 0, 0}, 261 /* 262 * The l4_sp_clk feeds a 100 MHz clock to various peripherals, one of them 263 * being the SP timers, thus cannot get gated. 264 */ 265 { AGILEX_L4_SP_CLK, "l4_sp_clk", "noc_clk", NULL, 1, CLK_IS_CRITICAL, 0x24, 266 3, 0x44, 16, 2, 0, 0, 0}, 267 { AGILEX_CS_AT_CLK, "cs_at_clk", "noc_clk", NULL, 1, 0, 0x24, 268 4, 0x44, 24, 2, 0, 0, 0}, 269 { AGILEX_CS_TRACE_CLK, "cs_trace_clk", "noc_clk", NULL, 1, 0, 0x24, 270 4, 0x44, 26, 2, 0, 0, 0}, 271 { AGILEX_CS_PDBG_CLK, "cs_pdbg_clk", "cs_at_clk", NULL, 1, 0, 0x24, 272 4, 0x44, 28, 1, 0, 0, 0}, 273 { AGILEX_CS_TIMER_CLK, "cs_timer_clk", "noc_clk", NULL, 1, 0, 0x24, 274 5, 0, 0, 0, 0, 0, 0}, 275 { AGILEX_S2F_USER0_CLK, "s2f_user0_clk", NULL, s2f_usr0_mux, ARRAY_SIZE(s2f_usr0_mux), 0, 0x24, 276 6, 0, 0, 0, 0, 0, 0}, 277 { AGILEX_EMAC0_CLK, "emac0_clk", NULL, emac_mux, ARRAY_SIZE(emac_mux), 0, 0x7C, 278 0, 0, 0, 0, 0x94, 26, 0}, 279 { AGILEX_EMAC1_CLK, "emac1_clk", NULL, emac_mux, ARRAY_SIZE(emac_mux), 0, 0x7C, 280 1, 0, 0, 0, 0x94, 27, 0}, 281 { AGILEX_EMAC2_CLK, "emac2_clk", NULL, emac_mux, ARRAY_SIZE(emac_mux), 0, 0x7C, 282 2, 0, 0, 0, 0x94, 28, 0}, 283 { AGILEX_EMAC_PTP_CLK, "emac_ptp_clk", "emac_ptp_free_clk", NULL, 1, 0, 0x7C, 284 3, 0, 0, 0, 0, 0, 0}, 285 { AGILEX_GPIO_DB_CLK, "gpio_db_clk", "gpio_db_free_clk", NULL, 1, 0, 0x7C, 286 4, 0x98, 0, 16, 0, 0, 0}, 287 { AGILEX_SDMMC_CLK, "sdmmc_clk", "sdmmc_free_clk", NULL, 1, 0, 0x7C, 288 5, 0, 0, 0, 0, 0, 4}, 289 { AGILEX_S2F_USER1_CLK, "s2f_user1_clk", "s2f_user1_free_clk", NULL, 1, 0, 0x7C, 290 6, 0, 0, 0, 0, 0, 0}, 291 { AGILEX_PSI_REF_CLK, "psi_ref_clk", "psi_ref_free_clk", NULL, 1, 0, 0x7C, 292 7, 0, 0, 0, 0, 0, 0}, 293 { AGILEX_USB_CLK, "usb_clk", "l4_mp_clk", NULL, 1, 0, 0x7C, 294 8, 0, 0, 0, 0, 0, 0}, 295 { AGILEX_SPI_M_CLK, "spi_m_clk", "l4_mp_clk", NULL, 1, 0, 0x7C, 296 9, 0, 0, 0, 0, 0, 0}, 297 { AGILEX_NAND_CLK, "nand_clk", "l4_main_clk", NULL, 1, 0, 0x7C, 298 10, 0, 0, 0, 0, 0, 0}, 299 }; 300 301 static int agilex_clk_register_c_perip(const struct stratix10_perip_c_clock *clks, 302 int nums, struct stratix10_clock_data *data) 303 { 304 struct clk *clk; 305 void __iomem *base = data->base; 306 int i; 307 308 for (i = 0; i < nums; i++) { 309 clk = s10_register_periph(&clks[i], base); 310 if (IS_ERR(clk)) { 311 pr_err("%s: failed to register clock %s\n", 312 __func__, clks[i].name); 313 continue; 314 } 315 data->clk_data.clks[clks[i].id] = clk; 316 } 317 return 0; 318 } 319 320 static int agilex_clk_register_cnt_perip(const struct stratix10_perip_cnt_clock *clks, 321 int nums, struct stratix10_clock_data *data) 322 { 323 struct clk *clk; 324 void __iomem *base = data->base; 325 int i; 326 327 for (i = 0; i < nums; i++) { 328 clk = s10_register_cnt_periph(&clks[i], base); 329 if (IS_ERR(clk)) { 330 pr_err("%s: failed to register clock %s\n", 331 __func__, clks[i].name); 332 continue; 333 } 334 data->clk_data.clks[clks[i].id] = clk; 335 } 336 337 return 0; 338 } 339 340 static int agilex_clk_register_gate(const struct stratix10_gate_clock *clks, int nums, struct stratix10_clock_data *data) 341 { 342 struct clk *clk; 343 void __iomem *base = data->base; 344 int i; 345 346 for (i = 0; i < nums; i++) { 347 clk = s10_register_gate(&clks[i], base); 348 if (IS_ERR(clk)) { 349 pr_err("%s: failed to register clock %s\n", 350 __func__, clks[i].name); 351 continue; 352 } 353 data->clk_data.clks[clks[i].id] = clk; 354 } 355 356 return 0; 357 } 358 359 static int agilex_clk_register_pll(const struct stratix10_pll_clock *clks, 360 int nums, struct stratix10_clock_data *data) 361 { 362 struct clk *clk; 363 void __iomem *base = data->base; 364 int i; 365 366 for (i = 0; i < nums; i++) { 367 clk = agilex_register_pll(&clks[i], base); 368 if (IS_ERR(clk)) { 369 pr_err("%s: failed to register clock %s\n", 370 __func__, clks[i].name); 371 continue; 372 } 373 data->clk_data.clks[clks[i].id] = clk; 374 } 375 376 return 0; 377 } 378 379 static struct stratix10_clock_data *__socfpga_agilex_clk_init(struct platform_device *pdev, 380 int nr_clks) 381 { 382 struct device_node *np = pdev->dev.of_node; 383 struct device *dev = &pdev->dev; 384 struct stratix10_clock_data *clk_data; 385 struct clk **clk_table; 386 struct resource *res; 387 void __iomem *base; 388 int ret; 389 390 res = platform_get_resource(pdev, IORESOURCE_MEM, 0); 391 base = devm_ioremap_resource(dev, res); 392 if (IS_ERR(base)) 393 return ERR_CAST(base); 394 395 clk_data = devm_kzalloc(dev, sizeof(*clk_data), GFP_KERNEL); 396 if (!clk_data) 397 return ERR_PTR(-ENOMEM); 398 399 clk_data->base = base; 400 clk_table = devm_kcalloc(dev, nr_clks, sizeof(*clk_table), GFP_KERNEL); 401 if (!clk_table) 402 return ERR_PTR(-ENOMEM); 403 404 clk_data->clk_data.clks = clk_table; 405 clk_data->clk_data.clk_num = nr_clks; 406 ret = of_clk_add_provider(np, of_clk_src_onecell_get, &clk_data->clk_data); 407 if (ret) 408 return ERR_PTR(ret); 409 410 return clk_data; 411 } 412 413 static int agilex_clkmgr_probe(struct platform_device *pdev) 414 { 415 struct stratix10_clock_data *clk_data; 416 417 clk_data = __socfpga_agilex_clk_init(pdev, AGILEX_NUM_CLKS); 418 if (IS_ERR(clk_data)) 419 return PTR_ERR(clk_data); 420 421 agilex_clk_register_pll(agilex_pll_clks, ARRAY_SIZE(agilex_pll_clks), clk_data); 422 423 agilex_clk_register_c_perip(agilex_main_perip_c_clks, 424 ARRAY_SIZE(agilex_main_perip_c_clks), clk_data); 425 426 agilex_clk_register_cnt_perip(agilex_main_perip_cnt_clks, 427 ARRAY_SIZE(agilex_main_perip_cnt_clks), 428 clk_data); 429 430 agilex_clk_register_gate(agilex_gate_clks, ARRAY_SIZE(agilex_gate_clks), 431 clk_data); 432 return 0; 433 } 434 435 static const struct of_device_id agilex_clkmgr_match_table[] = { 436 { .compatible = "intel,agilex-clkmgr", 437 .data = agilex_clkmgr_probe }, 438 { } 439 }; 440 441 static struct platform_driver agilex_clkmgr_driver = { 442 .probe = agilex_clkmgr_probe, 443 .driver = { 444 .name = "agilex-clkmgr", 445 .suppress_bind_attrs = true, 446 .of_match_table = agilex_clkmgr_match_table, 447 }, 448 }; 449 450 static int __init agilex_clk_init(void) 451 { 452 return platform_driver_register(&agilex_clkmgr_driver); 453 } 454 core_initcall(agilex_clk_init); 455