1 /* 2 * SCI Clock driver for keystone based devices 3 * 4 * Copyright (C) 2015-2016 Texas Instruments Incorporated - http://www.ti.com/ 5 * Tero Kristo <t-kristo@ti.com> 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License version 2 as 9 * published by the Free Software Foundation. 10 * 11 * This program is distributed "as is" WITHOUT ANY WARRANTY of any 12 * kind, whether express or implied; without even the implied warranty 13 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 */ 16 #include <linux/clk-provider.h> 17 #include <linux/err.h> 18 #include <linux/io.h> 19 #include <linux/module.h> 20 #include <linux/of_address.h> 21 #include <linux/of_device.h> 22 #include <linux/platform_device.h> 23 #include <linux/slab.h> 24 #include <linux/soc/ti/ti_sci_protocol.h> 25 #include <linux/bsearch.h> 26 27 #define SCI_CLK_SSC_ENABLE BIT(0) 28 #define SCI_CLK_ALLOW_FREQ_CHANGE BIT(1) 29 #define SCI_CLK_INPUT_TERMINATION BIT(2) 30 31 /** 32 * struct sci_clk_data - TI SCI clock data 33 * @dev: device index 34 * @num_clks: number of clocks for this device 35 */ 36 struct sci_clk_data { 37 u16 dev; 38 u16 num_clks; 39 }; 40 41 /** 42 * struct sci_clk_provider - TI SCI clock provider representation 43 * @sci: Handle to the System Control Interface protocol handler 44 * @ops: Pointer to the SCI ops to be used by the clocks 45 * @dev: Device pointer for the clock provider 46 * @clk_data: Clock data 47 * @clocks: Clocks array for this device 48 * @num_clocks: Total number of clocks for this provider 49 */ 50 struct sci_clk_provider { 51 const struct ti_sci_handle *sci; 52 const struct ti_sci_clk_ops *ops; 53 struct device *dev; 54 const struct sci_clk_data *clk_data; 55 struct clk_hw **clocks; 56 int num_clocks; 57 }; 58 59 /** 60 * struct sci_clk - TI SCI clock representation 61 * @hw: Hardware clock cookie for common clock framework 62 * @dev_id: Device index 63 * @clk_id: Clock index 64 * @provider: Master clock provider 65 * @flags: Flags for the clock 66 */ 67 struct sci_clk { 68 struct clk_hw hw; 69 u16 dev_id; 70 u8 clk_id; 71 struct sci_clk_provider *provider; 72 u8 flags; 73 }; 74 75 #define to_sci_clk(_hw) container_of(_hw, struct sci_clk, hw) 76 77 /** 78 * sci_clk_prepare - Prepare (enable) a TI SCI clock 79 * @hw: clock to prepare 80 * 81 * Prepares a clock to be actively used. Returns the SCI protocol status. 82 */ 83 static int sci_clk_prepare(struct clk_hw *hw) 84 { 85 struct sci_clk *clk = to_sci_clk(hw); 86 bool enable_ssc = clk->flags & SCI_CLK_SSC_ENABLE; 87 bool allow_freq_change = clk->flags & SCI_CLK_ALLOW_FREQ_CHANGE; 88 bool input_termination = clk->flags & SCI_CLK_INPUT_TERMINATION; 89 90 return clk->provider->ops->get_clock(clk->provider->sci, clk->dev_id, 91 clk->clk_id, enable_ssc, 92 allow_freq_change, 93 input_termination); 94 } 95 96 /** 97 * sci_clk_unprepare - Un-prepares (disables) a TI SCI clock 98 * @hw: clock to unprepare 99 * 100 * Un-prepares a clock from active state. 101 */ 102 static void sci_clk_unprepare(struct clk_hw *hw) 103 { 104 struct sci_clk *clk = to_sci_clk(hw); 105 int ret; 106 107 ret = clk->provider->ops->put_clock(clk->provider->sci, clk->dev_id, 108 clk->clk_id); 109 if (ret) 110 dev_err(clk->provider->dev, 111 "unprepare failed for dev=%d, clk=%d, ret=%d\n", 112 clk->dev_id, clk->clk_id, ret); 113 } 114 115 /** 116 * sci_clk_is_prepared - Check if a TI SCI clock is prepared or not 117 * @hw: clock to check status for 118 * 119 * Checks if a clock is prepared (enabled) in hardware. Returns non-zero 120 * value if clock is enabled, zero otherwise. 121 */ 122 static int sci_clk_is_prepared(struct clk_hw *hw) 123 { 124 struct sci_clk *clk = to_sci_clk(hw); 125 bool req_state, current_state; 126 int ret; 127 128 ret = clk->provider->ops->is_on(clk->provider->sci, clk->dev_id, 129 clk->clk_id, &req_state, 130 ¤t_state); 131 if (ret) { 132 dev_err(clk->provider->dev, 133 "is_prepared failed for dev=%d, clk=%d, ret=%d\n", 134 clk->dev_id, clk->clk_id, ret); 135 return 0; 136 } 137 138 return req_state; 139 } 140 141 /** 142 * sci_clk_recalc_rate - Get clock rate for a TI SCI clock 143 * @hw: clock to get rate for 144 * @parent_rate: parent rate provided by common clock framework, not used 145 * 146 * Gets the current clock rate of a TI SCI clock. Returns the current 147 * clock rate, or zero in failure. 148 */ 149 static unsigned long sci_clk_recalc_rate(struct clk_hw *hw, 150 unsigned long parent_rate) 151 { 152 struct sci_clk *clk = to_sci_clk(hw); 153 u64 freq; 154 int ret; 155 156 ret = clk->provider->ops->get_freq(clk->provider->sci, clk->dev_id, 157 clk->clk_id, &freq); 158 if (ret) { 159 dev_err(clk->provider->dev, 160 "recalc-rate failed for dev=%d, clk=%d, ret=%d\n", 161 clk->dev_id, clk->clk_id, ret); 162 return 0; 163 } 164 165 return freq; 166 } 167 168 /** 169 * sci_clk_determine_rate - Determines a clock rate a clock can be set to 170 * @hw: clock to change rate for 171 * @req: requested rate configuration for the clock 172 * 173 * Determines a suitable clock rate and parent for a TI SCI clock. 174 * The parent handling is un-used, as generally the parent clock rates 175 * are not known by the kernel; instead these are internally handled 176 * by the firmware. Returns 0 on success, negative error value on failure. 177 */ 178 static int sci_clk_determine_rate(struct clk_hw *hw, 179 struct clk_rate_request *req) 180 { 181 struct sci_clk *clk = to_sci_clk(hw); 182 int ret; 183 u64 new_rate; 184 185 ret = clk->provider->ops->get_best_match_freq(clk->provider->sci, 186 clk->dev_id, 187 clk->clk_id, 188 req->min_rate, 189 req->rate, 190 req->max_rate, 191 &new_rate); 192 if (ret) { 193 dev_err(clk->provider->dev, 194 "determine-rate failed for dev=%d, clk=%d, ret=%d\n", 195 clk->dev_id, clk->clk_id, ret); 196 return ret; 197 } 198 199 req->rate = new_rate; 200 201 return 0; 202 } 203 204 /** 205 * sci_clk_set_rate - Set rate for a TI SCI clock 206 * @hw: clock to change rate for 207 * @rate: target rate for the clock 208 * @parent_rate: rate of the clock parent, not used for TI SCI clocks 209 * 210 * Sets a clock frequency for a TI SCI clock. Returns the TI SCI 211 * protocol status. 212 */ 213 static int sci_clk_set_rate(struct clk_hw *hw, unsigned long rate, 214 unsigned long parent_rate) 215 { 216 struct sci_clk *clk = to_sci_clk(hw); 217 218 return clk->provider->ops->set_freq(clk->provider->sci, clk->dev_id, 219 clk->clk_id, rate, rate, rate); 220 } 221 222 /** 223 * sci_clk_get_parent - Get the current parent of a TI SCI clock 224 * @hw: clock to get parent for 225 * 226 * Returns the index of the currently selected parent for a TI SCI clock. 227 */ 228 static u8 sci_clk_get_parent(struct clk_hw *hw) 229 { 230 struct sci_clk *clk = to_sci_clk(hw); 231 u8 parent_id; 232 int ret; 233 234 ret = clk->provider->ops->get_parent(clk->provider->sci, clk->dev_id, 235 clk->clk_id, &parent_id); 236 if (ret) { 237 dev_err(clk->provider->dev, 238 "get-parent failed for dev=%d, clk=%d, ret=%d\n", 239 clk->dev_id, clk->clk_id, ret); 240 return 0; 241 } 242 243 return parent_id - clk->clk_id - 1; 244 } 245 246 /** 247 * sci_clk_set_parent - Set the parent of a TI SCI clock 248 * @hw: clock to set parent for 249 * @index: new parent index for the clock 250 * 251 * Sets the parent of a TI SCI clock. Return TI SCI protocol status. 252 */ 253 static int sci_clk_set_parent(struct clk_hw *hw, u8 index) 254 { 255 struct sci_clk *clk = to_sci_clk(hw); 256 257 return clk->provider->ops->set_parent(clk->provider->sci, clk->dev_id, 258 clk->clk_id, 259 index + 1 + clk->clk_id); 260 } 261 262 static const struct clk_ops sci_clk_ops = { 263 .prepare = sci_clk_prepare, 264 .unprepare = sci_clk_unprepare, 265 .is_prepared = sci_clk_is_prepared, 266 .recalc_rate = sci_clk_recalc_rate, 267 .determine_rate = sci_clk_determine_rate, 268 .set_rate = sci_clk_set_rate, 269 .get_parent = sci_clk_get_parent, 270 .set_parent = sci_clk_set_parent, 271 }; 272 273 /** 274 * _sci_clk_get - Gets a handle for an SCI clock 275 * @provider: Handle to SCI clock provider 276 * @dev_id: device ID for the clock to register 277 * @clk_id: clock ID for the clock to register 278 * 279 * Gets a handle to an existing TI SCI hw clock, or builds a new clock 280 * entry and registers it with the common clock framework. Called from 281 * the common clock framework, when a corresponding of_clk_get call is 282 * executed, or recursively from itself when parsing parent clocks. 283 * Returns a pointer to the hw clock struct, or ERR_PTR value in failure. 284 */ 285 static struct clk_hw *_sci_clk_build(struct sci_clk_provider *provider, 286 u16 dev_id, u8 clk_id) 287 { 288 struct clk_init_data init = { NULL }; 289 struct sci_clk *sci_clk = NULL; 290 char *name = NULL; 291 char **parent_names = NULL; 292 int i; 293 int ret; 294 295 sci_clk = devm_kzalloc(provider->dev, sizeof(*sci_clk), GFP_KERNEL); 296 if (!sci_clk) 297 return ERR_PTR(-ENOMEM); 298 299 sci_clk->dev_id = dev_id; 300 sci_clk->clk_id = clk_id; 301 sci_clk->provider = provider; 302 303 ret = provider->ops->get_num_parents(provider->sci, dev_id, 304 clk_id, 305 &init.num_parents); 306 if (ret) 307 goto err; 308 309 name = kasprintf(GFP_KERNEL, "%s:%d:%d", dev_name(provider->dev), 310 sci_clk->dev_id, sci_clk->clk_id); 311 312 init.name = name; 313 314 /* 315 * From kernel point of view, we only care about a clocks parents, 316 * if it has more than 1 possible parent. In this case, it is going 317 * to have mux functionality. Otherwise it is going to act as a root 318 * clock. 319 */ 320 if (init.num_parents < 2) 321 init.num_parents = 0; 322 323 if (init.num_parents) { 324 parent_names = kcalloc(init.num_parents, sizeof(char *), 325 GFP_KERNEL); 326 327 if (!parent_names) { 328 ret = -ENOMEM; 329 goto err; 330 } 331 332 for (i = 0; i < init.num_parents; i++) { 333 char *parent_name; 334 335 parent_name = kasprintf(GFP_KERNEL, "%s:%d:%d", 336 dev_name(provider->dev), 337 sci_clk->dev_id, 338 sci_clk->clk_id + 1 + i); 339 if (!parent_name) { 340 ret = -ENOMEM; 341 goto err; 342 } 343 parent_names[i] = parent_name; 344 } 345 init.parent_names = (void *)parent_names; 346 } 347 348 init.ops = &sci_clk_ops; 349 sci_clk->hw.init = &init; 350 351 ret = devm_clk_hw_register(provider->dev, &sci_clk->hw); 352 if (ret) 353 dev_err(provider->dev, "failed clk register with %d\n", ret); 354 355 err: 356 if (parent_names) { 357 for (i = 0; i < init.num_parents; i++) 358 kfree(parent_names[i]); 359 360 kfree(parent_names); 361 } 362 363 kfree(name); 364 365 if (ret) 366 return ERR_PTR(ret); 367 368 return &sci_clk->hw; 369 } 370 371 static int _cmp_sci_clk(const void *a, const void *b) 372 { 373 const struct sci_clk *ca = a; 374 const struct sci_clk *cb = *(struct sci_clk **)b; 375 376 if (ca->dev_id == cb->dev_id && ca->clk_id == cb->clk_id) 377 return 0; 378 if (ca->dev_id > cb->dev_id || 379 (ca->dev_id == cb->dev_id && ca->clk_id > cb->clk_id)) 380 return 1; 381 return -1; 382 } 383 384 /** 385 * sci_clk_get - Xlate function for getting clock handles 386 * @clkspec: device tree clock specifier 387 * @data: pointer to the clock provider 388 * 389 * Xlate function for retrieving clock TI SCI hw clock handles based on 390 * device tree clock specifier. Called from the common clock framework, 391 * when a corresponding of_clk_get call is executed. Returns a pointer 392 * to the TI SCI hw clock struct, or ERR_PTR value in failure. 393 */ 394 static struct clk_hw *sci_clk_get(struct of_phandle_args *clkspec, void *data) 395 { 396 struct sci_clk_provider *provider = data; 397 struct sci_clk **clk; 398 struct sci_clk key; 399 400 if (clkspec->args_count != 2) 401 return ERR_PTR(-EINVAL); 402 403 key.dev_id = clkspec->args[0]; 404 key.clk_id = clkspec->args[1]; 405 406 clk = bsearch(&key, provider->clocks, provider->num_clocks, 407 sizeof(clk), _cmp_sci_clk); 408 409 if (!clk) 410 return ERR_PTR(-ENODEV); 411 412 return &(*clk)->hw; 413 } 414 415 static int ti_sci_init_clocks(struct sci_clk_provider *p) 416 { 417 const struct sci_clk_data *data = p->clk_data; 418 struct clk_hw *hw; 419 int i; 420 int num_clks = 0; 421 422 while (data->num_clks) { 423 num_clks += data->num_clks; 424 data++; 425 } 426 427 p->num_clocks = num_clks; 428 429 p->clocks = devm_kcalloc(p->dev, num_clks, sizeof(struct sci_clk), 430 GFP_KERNEL); 431 if (!p->clocks) 432 return -ENOMEM; 433 434 num_clks = 0; 435 436 data = p->clk_data; 437 438 while (data->num_clks) { 439 for (i = 0; i < data->num_clks; i++) { 440 hw = _sci_clk_build(p, data->dev, i); 441 if (!IS_ERR(hw)) { 442 p->clocks[num_clks++] = hw; 443 continue; 444 } 445 446 /* Skip any holes in the clock lists */ 447 if (PTR_ERR(hw) == -ENODEV) 448 continue; 449 450 return PTR_ERR(hw); 451 } 452 data++; 453 } 454 455 return 0; 456 } 457 458 static const struct sci_clk_data k2g_clk_data[] = { 459 /* pmmc */ 460 { .dev = 0x0, .num_clks = 4 }, 461 462 /* mlb0 */ 463 { .dev = 0x1, .num_clks = 5 }, 464 465 /* dss0 */ 466 { .dev = 0x2, .num_clks = 2 }, 467 468 /* mcbsp0 */ 469 { .dev = 0x3, .num_clks = 8 }, 470 471 /* mcasp0 */ 472 { .dev = 0x4, .num_clks = 8 }, 473 474 /* mcasp1 */ 475 { .dev = 0x5, .num_clks = 8 }, 476 477 /* mcasp2 */ 478 { .dev = 0x6, .num_clks = 8 }, 479 480 /* dcan0 */ 481 { .dev = 0x8, .num_clks = 2 }, 482 483 /* dcan1 */ 484 { .dev = 0x9, .num_clks = 2 }, 485 486 /* emif0 */ 487 { .dev = 0xa, .num_clks = 6 }, 488 489 /* mmchs0 */ 490 { .dev = 0xb, .num_clks = 3 }, 491 492 /* mmchs1 */ 493 { .dev = 0xc, .num_clks = 3 }, 494 495 /* gpmc0 */ 496 { .dev = 0xd, .num_clks = 1 }, 497 498 /* elm0 */ 499 { .dev = 0xe, .num_clks = 1 }, 500 501 /* spi0 */ 502 { .dev = 0x10, .num_clks = 1 }, 503 504 /* spi1 */ 505 { .dev = 0x11, .num_clks = 1 }, 506 507 /* spi2 */ 508 { .dev = 0x12, .num_clks = 1 }, 509 510 /* spi3 */ 511 { .dev = 0x13, .num_clks = 1 }, 512 513 /* icss0 */ 514 { .dev = 0x14, .num_clks = 6 }, 515 516 /* icss1 */ 517 { .dev = 0x15, .num_clks = 6 }, 518 519 /* usb0 */ 520 { .dev = 0x16, .num_clks = 7 }, 521 522 /* usb1 */ 523 { .dev = 0x17, .num_clks = 7 }, 524 525 /* nss0 */ 526 { .dev = 0x18, .num_clks = 14 }, 527 528 /* pcie0 */ 529 { .dev = 0x19, .num_clks = 1 }, 530 531 /* gpio0 */ 532 { .dev = 0x1b, .num_clks = 1 }, 533 534 /* gpio1 */ 535 { .dev = 0x1c, .num_clks = 1 }, 536 537 /* timer64_0 */ 538 { .dev = 0x1d, .num_clks = 9 }, 539 540 /* timer64_1 */ 541 { .dev = 0x1e, .num_clks = 9 }, 542 543 /* timer64_2 */ 544 { .dev = 0x1f, .num_clks = 9 }, 545 546 /* timer64_3 */ 547 { .dev = 0x20, .num_clks = 9 }, 548 549 /* timer64_4 */ 550 { .dev = 0x21, .num_clks = 9 }, 551 552 /* timer64_5 */ 553 { .dev = 0x22, .num_clks = 9 }, 554 555 /* timer64_6 */ 556 { .dev = 0x23, .num_clks = 9 }, 557 558 /* msgmgr0 */ 559 { .dev = 0x25, .num_clks = 1 }, 560 561 /* bootcfg0 */ 562 { .dev = 0x26, .num_clks = 1 }, 563 564 /* arm_bootrom0 */ 565 { .dev = 0x27, .num_clks = 1 }, 566 567 /* dsp_bootrom0 */ 568 { .dev = 0x29, .num_clks = 1 }, 569 570 /* debugss0 */ 571 { .dev = 0x2b, .num_clks = 8 }, 572 573 /* uart0 */ 574 { .dev = 0x2c, .num_clks = 1 }, 575 576 /* uart1 */ 577 { .dev = 0x2d, .num_clks = 1 }, 578 579 /* uart2 */ 580 { .dev = 0x2e, .num_clks = 1 }, 581 582 /* ehrpwm0 */ 583 { .dev = 0x2f, .num_clks = 1 }, 584 585 /* ehrpwm1 */ 586 { .dev = 0x30, .num_clks = 1 }, 587 588 /* ehrpwm2 */ 589 { .dev = 0x31, .num_clks = 1 }, 590 591 /* ehrpwm3 */ 592 { .dev = 0x32, .num_clks = 1 }, 593 594 /* ehrpwm4 */ 595 { .dev = 0x33, .num_clks = 1 }, 596 597 /* ehrpwm5 */ 598 { .dev = 0x34, .num_clks = 1 }, 599 600 /* eqep0 */ 601 { .dev = 0x35, .num_clks = 1 }, 602 603 /* eqep1 */ 604 { .dev = 0x36, .num_clks = 1 }, 605 606 /* eqep2 */ 607 { .dev = 0x37, .num_clks = 1 }, 608 609 /* ecap0 */ 610 { .dev = 0x38, .num_clks = 1 }, 611 612 /* ecap1 */ 613 { .dev = 0x39, .num_clks = 1 }, 614 615 /* i2c0 */ 616 { .dev = 0x3a, .num_clks = 1 }, 617 618 /* i2c1 */ 619 { .dev = 0x3b, .num_clks = 1 }, 620 621 /* i2c2 */ 622 { .dev = 0x3c, .num_clks = 1 }, 623 624 /* edma0 */ 625 { .dev = 0x3f, .num_clks = 2 }, 626 627 /* semaphore0 */ 628 { .dev = 0x40, .num_clks = 1 }, 629 630 /* intc0 */ 631 { .dev = 0x41, .num_clks = 1 }, 632 633 /* gic0 */ 634 { .dev = 0x42, .num_clks = 1 }, 635 636 /* qspi0 */ 637 { .dev = 0x43, .num_clks = 5 }, 638 639 /* arm_64b_counter0 */ 640 { .dev = 0x44, .num_clks = 2 }, 641 642 /* tetris0 */ 643 { .dev = 0x45, .num_clks = 2 }, 644 645 /* cgem0 */ 646 { .dev = 0x46, .num_clks = 2 }, 647 648 /* msmc0 */ 649 { .dev = 0x47, .num_clks = 1 }, 650 651 /* cbass0 */ 652 { .dev = 0x49, .num_clks = 1 }, 653 654 /* board0 */ 655 { .dev = 0x4c, .num_clks = 36 }, 656 657 /* edma1 */ 658 { .dev = 0x4f, .num_clks = 2 }, 659 { .num_clks = 0 }, 660 }; 661 662 static const struct of_device_id ti_sci_clk_of_match[] = { 663 { .compatible = "ti,k2g-sci-clk", .data = &k2g_clk_data }, 664 { /* Sentinel */ }, 665 }; 666 MODULE_DEVICE_TABLE(of, ti_sci_clk_of_match); 667 668 /** 669 * ti_sci_clk_probe - Probe function for the TI SCI clock driver 670 * @pdev: platform device pointer to be probed 671 * 672 * Probes the TI SCI clock device. Allocates a new clock provider 673 * and registers this to the common clock framework. Also applies 674 * any required flags to the identified clocks via clock lists 675 * supplied from DT. Returns 0 for success, negative error value 676 * for failure. 677 */ 678 static int ti_sci_clk_probe(struct platform_device *pdev) 679 { 680 struct device *dev = &pdev->dev; 681 struct device_node *np = dev->of_node; 682 struct sci_clk_provider *provider; 683 const struct ti_sci_handle *handle; 684 const struct sci_clk_data *data; 685 int ret; 686 687 data = of_device_get_match_data(dev); 688 if (!data) 689 return -EINVAL; 690 691 handle = devm_ti_sci_get_handle(dev); 692 if (IS_ERR(handle)) 693 return PTR_ERR(handle); 694 695 provider = devm_kzalloc(dev, sizeof(*provider), GFP_KERNEL); 696 if (!provider) 697 return -ENOMEM; 698 699 provider->clk_data = data; 700 701 provider->sci = handle; 702 provider->ops = &handle->ops.clk_ops; 703 provider->dev = dev; 704 705 ret = ti_sci_init_clocks(provider); 706 if (ret) { 707 pr_err("ti-sci-init-clocks failed.\n"); 708 return ret; 709 } 710 711 return of_clk_add_hw_provider(np, sci_clk_get, provider); 712 } 713 714 /** 715 * ti_sci_clk_remove - Remove TI SCI clock device 716 * @pdev: platform device pointer for the device to be removed 717 * 718 * Removes the TI SCI device. Unregisters the clock provider registered 719 * via common clock framework. Any memory allocated for the device will 720 * be free'd silently via the devm framework. Returns 0 always. 721 */ 722 static int ti_sci_clk_remove(struct platform_device *pdev) 723 { 724 of_clk_del_provider(pdev->dev.of_node); 725 726 return 0; 727 } 728 729 static struct platform_driver ti_sci_clk_driver = { 730 .probe = ti_sci_clk_probe, 731 .remove = ti_sci_clk_remove, 732 .driver = { 733 .name = "ti-sci-clk", 734 .of_match_table = of_match_ptr(ti_sci_clk_of_match), 735 }, 736 }; 737 module_platform_driver(ti_sci_clk_driver); 738 739 MODULE_LICENSE("GPL v2"); 740 MODULE_DESCRIPTION("TI System Control Interface(SCI) Clock driver"); 741 MODULE_AUTHOR("Tero Kristo"); 742 MODULE_ALIAS("platform:ti-sci-clk"); 743