tegra2_clocks.c 37.1 KB
Newer Older
C
Colin Cross 已提交
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359
/*
 * arch/arm/mach-tegra/tegra2_clocks.c
 *
 * Copyright (C) 2010 Google, Inc.
 *
 * Author:
 *	Colin Cross <ccross@google.com>
 *
 * This software is licensed under the terms of the GNU General Public
 * License version 2, as published by the Free Software Foundation, and
 * may be copied, distributed, and modified under those terms.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 */

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/list.h>
#include <linux/spinlock.h>
#include <linux/delay.h>
#include <linux/io.h>
#include <linux/hrtimer.h>

#include <asm/clkdev.h>

#include <mach/iomap.h>

#include "clock.h"

#define RST_DEVICES			0x004
#define RST_DEVICES_SET			0x300
#define RST_DEVICES_CLR			0x304

#define CLK_OUT_ENB			0x010
#define CLK_OUT_ENB_SET			0x320
#define CLK_OUT_ENB_CLR			0x324

#define OSC_CTRL			0x50
#define OSC_CTRL_OSC_FREQ_MASK		(3<<30)
#define OSC_CTRL_OSC_FREQ_13MHZ		(0<<30)
#define OSC_CTRL_OSC_FREQ_19_2MHZ	(1<<30)
#define OSC_CTRL_OSC_FREQ_12MHZ		(2<<30)
#define OSC_CTRL_OSC_FREQ_26MHZ		(3<<30)

#define OSC_FREQ_DET			0x58
#define OSC_FREQ_DET_TRIG		(1<<31)

#define OSC_FREQ_DET_STATUS		0x5C
#define OSC_FREQ_DET_BUSY		(1<<31)
#define OSC_FREQ_DET_CNT_MASK		0xFFFF

#define PERIPH_CLK_SOURCE_MASK		(3<<30)
#define PERIPH_CLK_SOURCE_SHIFT		30
#define PERIPH_CLK_SOURCE_ENABLE	(1<<28)
#define PERIPH_CLK_SOURCE_DIV_MASK	0xFF
#define PERIPH_CLK_SOURCE_DIV_SHIFT	0

#define PLL_BASE			0x0
#define PLL_BASE_BYPASS			(1<<31)
#define PLL_BASE_ENABLE			(1<<30)
#define PLL_BASE_REF_ENABLE		(1<<29)
#define PLL_BASE_OVERRIDE		(1<<28)
#define PLL_BASE_LOCK			(1<<27)
#define PLL_BASE_DIVP_MASK		(0x7<<20)
#define PLL_BASE_DIVP_SHIFT		20
#define PLL_BASE_DIVN_MASK		(0x3FF<<8)
#define PLL_BASE_DIVN_SHIFT		8
#define PLL_BASE_DIVM_MASK		(0x1F)
#define PLL_BASE_DIVM_SHIFT		0

#define PLL_OUT_RATIO_MASK		(0xFF<<8)
#define PLL_OUT_RATIO_SHIFT		8
#define PLL_OUT_OVERRIDE		(1<<2)
#define PLL_OUT_CLKEN			(1<<1)
#define PLL_OUT_RESET_DISABLE		(1<<0)

#define PLL_MISC(c)			(((c)->flags & PLL_ALT_MISC_REG) ? 0x4 : 0xc)
#define PLL_MISC_DCCON_SHIFT		20
#define PLL_MISC_LOCK_ENABLE		(1<<18)
#define PLL_MISC_CPCON_SHIFT		8
#define PLL_MISC_CPCON_MASK		(0xF<<PLL_MISC_CPCON_SHIFT)
#define PLL_MISC_LFCON_SHIFT		4
#define PLL_MISC_LFCON_MASK		(0xF<<PLL_MISC_LFCON_SHIFT)
#define PLL_MISC_VCOCON_SHIFT		0
#define PLL_MISC_VCOCON_MASK		(0xF<<PLL_MISC_VCOCON_SHIFT)

#define PLLD_MISC_CLKENABLE		(1<<30)
#define PLLD_MISC_DIV_RST		(1<<23)
#define PLLD_MISC_DCCON_SHIFT		12

#define PERIPH_CLK_TO_ENB_REG(c)	((c->clk_num / 32) * 4)
#define PERIPH_CLK_TO_ENB_SET_REG(c)	((c->clk_num / 32) * 8)
#define PERIPH_CLK_TO_ENB_BIT(c)	(1 << (c->clk_num % 32))

#define SUPER_CLK_MUX			0x00
#define SUPER_STATE_SHIFT		28
#define SUPER_STATE_MASK		(0xF << SUPER_STATE_SHIFT)
#define SUPER_STATE_STANDBY		(0x0 << SUPER_STATE_SHIFT)
#define SUPER_STATE_IDLE		(0x1 << SUPER_STATE_SHIFT)
#define SUPER_STATE_RUN			(0x2 << SUPER_STATE_SHIFT)
#define SUPER_STATE_IRQ			(0x3 << SUPER_STATE_SHIFT)
#define SUPER_STATE_FIQ			(0x4 << SUPER_STATE_SHIFT)
#define SUPER_SOURCE_MASK		0xF
#define	SUPER_FIQ_SOURCE_SHIFT		12
#define	SUPER_IRQ_SOURCE_SHIFT		8
#define	SUPER_RUN_SOURCE_SHIFT		4
#define	SUPER_IDLE_SOURCE_SHIFT		0

#define SUPER_CLK_DIVIDER		0x04

#define BUS_CLK_DISABLE			(1<<3)
#define BUS_CLK_DIV_MASK		0x3

static void __iomem *reg_clk_base = IO_ADDRESS(TEGRA_CLK_RESET_BASE);

#define clk_writel(value, reg) \
	__raw_writel(value, (u32)reg_clk_base + (reg))
#define clk_readl(reg) \
	__raw_readl((u32)reg_clk_base + (reg))

unsigned long clk_measure_input_freq(void)
{
	u32 clock_autodetect;
	clk_writel(OSC_FREQ_DET_TRIG | 1, OSC_FREQ_DET);
	do {} while (clk_readl(OSC_FREQ_DET_STATUS) & OSC_FREQ_DET_BUSY);
	clock_autodetect = clk_readl(OSC_FREQ_DET_STATUS);
	if (clock_autodetect >= 732 - 3 && clock_autodetect <= 732 + 3) {
		return 12000000;
	} else if (clock_autodetect >= 794 - 3 && clock_autodetect <= 794 + 3) {
		return 13000000;
	} else if (clock_autodetect >= 1172 - 3 && clock_autodetect <= 1172 + 3) {
		return 19200000;
	} else if (clock_autodetect >= 1587 - 3 && clock_autodetect <= 1587 + 3) {
		return 26000000;
	} else {
		pr_err("%s: Unexpected clock autodetect value %d", __func__, clock_autodetect);
		BUG();
		return 0;
	}
}

static int clk_div71_get_divider(struct clk *c, unsigned long rate)
{
	unsigned long divider_u71;

	divider_u71 = DIV_ROUND_UP(c->rate * 2, rate);

	if (divider_u71 - 2 > 255 || divider_u71 - 2 < 0)
		return -EINVAL;

	return divider_u71 - 2;
}

static unsigned long tegra2_clk_recalculate_rate(struct clk *c)
{
	unsigned long rate;
	rate = c->parent->rate;

	if (c->mul != 0 && c->div != 0)
		c->rate = rate * c->mul / c->div;
	else
		c->rate = rate;
	return c->rate;
}


/* clk_m functions */
static unsigned long tegra2_clk_m_autodetect_rate(struct clk *c)
{
	u32 auto_clock_control = clk_readl(OSC_CTRL) & ~OSC_CTRL_OSC_FREQ_MASK;

	c->rate = clk_measure_input_freq();
	switch (c->rate) {
	case 12000000:
		auto_clock_control |= OSC_CTRL_OSC_FREQ_12MHZ;
		break;
	case 13000000:
		auto_clock_control |= OSC_CTRL_OSC_FREQ_13MHZ;
		break;
	case 19200000:
		auto_clock_control |= OSC_CTRL_OSC_FREQ_19_2MHZ;
		break;
	case 26000000:
		auto_clock_control |= OSC_CTRL_OSC_FREQ_26MHZ;
		break;
	default:
		pr_err("%s: Unexpected clock rate %ld", __func__, c->rate);
		BUG();
	}
	clk_writel(auto_clock_control, OSC_CTRL);
	return c->rate;
}

static void tegra2_clk_m_init(struct clk *c)
{
	pr_debug("%s on clock %s\n", __func__, c->name);
	tegra2_clk_m_autodetect_rate(c);
}

static int tegra2_clk_m_enable(struct clk *c)
{
	pr_debug("%s on clock %s\n", __func__, c->name);
	return 0;
}

static void tegra2_clk_m_disable(struct clk *c)
{
	pr_debug("%s on clock %s\n", __func__, c->name);
	BUG();
}

static struct clk_ops tegra_clk_m_ops = {
	.init		= tegra2_clk_m_init,
	.enable		= tegra2_clk_m_enable,
	.disable	= tegra2_clk_m_disable,
};

/* super clock functions */
/* "super clocks" on tegra have two-stage muxes and a clock skipping
 * super divider.  We will ignore the clock skipping divider, since we
 * can't lower the voltage when using the clock skip, but we can if we
 * lower the PLL frequency.
 */
static void tegra2_super_clk_init(struct clk *c)
{
	u32 val;
	int source;
	int shift;
	const struct clk_mux_sel *sel;
	val = clk_readl(c->reg + SUPER_CLK_MUX);
	c->state = ON;
	BUG_ON(((val & SUPER_STATE_MASK) != SUPER_STATE_RUN) &&
		((val & SUPER_STATE_MASK) != SUPER_STATE_IDLE));
	shift = ((val & SUPER_STATE_MASK) == SUPER_STATE_IDLE) ?
		SUPER_IDLE_SOURCE_SHIFT : SUPER_RUN_SOURCE_SHIFT;
	source = (val >> shift) & SUPER_SOURCE_MASK;
	for (sel = c->inputs; sel->input != NULL; sel++) {
		if (sel->value == source)
			break;
	}
	BUG_ON(sel->input == NULL);
	c->parent = sel->input;
	tegra2_clk_recalculate_rate(c);
}

static int tegra2_super_clk_enable(struct clk *c)
{
	clk_writel(0, c->reg + SUPER_CLK_DIVIDER);
	return 0;
}

static void tegra2_super_clk_disable(struct clk *c)
{
	pr_debug("%s on clock %s\n", __func__, c->name);

	/* oops - don't disable the CPU clock! */
	BUG();
}

static int tegra2_super_clk_set_parent(struct clk *c, struct clk *p)
{
	u32 val;
	const struct clk_mux_sel *sel;
	int shift;
	val = clk_readl(c->reg + SUPER_CLK_MUX);;
	BUG_ON(((val & SUPER_STATE_MASK) != SUPER_STATE_RUN) &&
		((val & SUPER_STATE_MASK) != SUPER_STATE_IDLE));
	shift = ((val & SUPER_STATE_MASK) == SUPER_STATE_IDLE) ?
		SUPER_IDLE_SOURCE_SHIFT : SUPER_RUN_SOURCE_SHIFT;
	for (sel = c->inputs; sel->input != NULL; sel++) {
		if (sel->input == p) {
			clk_reparent(c, p);
			val &= ~(SUPER_SOURCE_MASK << shift);
			val |= sel->value << shift;
			clk_writel(val, c->reg);
			c->rate = c->parent->rate;
			return 0;
		}
	}
	return -EINVAL;
}

static struct clk_ops tegra_super_ops = {
	.init			= tegra2_super_clk_init,
	.enable			= tegra2_super_clk_enable,
	.disable		= tegra2_super_clk_disable,
	.set_parent		= tegra2_super_clk_set_parent,
	.recalculate_rate	= tegra2_clk_recalculate_rate,
};

/* bus clock functions */
static void tegra2_bus_clk_init(struct clk *c)
{
	u32 val = clk_readl(c->reg);
	c->state = ((val >> c->reg_shift) & BUS_CLK_DISABLE) ? OFF : ON;
	c->div = ((val >> c->reg_shift) & BUS_CLK_DIV_MASK) + 1;
	c->mul = 1;
	tegra2_clk_recalculate_rate(c);
}

static int tegra2_bus_clk_enable(struct clk *c)
{
	u32 val = clk_readl(c->reg);
	val &= ~(BUS_CLK_DISABLE << c->reg_shift);
	clk_writel(val, c->reg);
	return 0;
}

static void tegra2_bus_clk_disable(struct clk *c)
{
	u32 val = clk_readl(c->reg);
	val |= BUS_CLK_DISABLE << c->reg_shift;
	clk_writel(val, c->reg);
}

static int tegra2_bus_clk_set_rate(struct clk *c, unsigned long rate)
{
	u32 val = clk_readl(c->reg);
	unsigned long parent_rate = c->parent->rate;
	int i;
	for (i = 1; i <= 4; i++) {
		if (rate == parent_rate / i) {
			val &= ~(BUS_CLK_DIV_MASK << c->reg_shift);
			val |= (i - 1) << c->reg_shift;
			clk_writel(val, c->reg);
			c->div = i;
			c->mul = 1;
			return 0;
		}
	}
	return -EINVAL;
}

static struct clk_ops tegra_bus_ops = {
	.init			= tegra2_bus_clk_init,
	.enable			= tegra2_bus_clk_enable,
	.disable		= tegra2_bus_clk_disable,
	.set_rate		= tegra2_bus_clk_set_rate,
	.recalculate_rate	= tegra2_clk_recalculate_rate,
};

/* PLL Functions */
static unsigned long tegra2_pll_clk_recalculate_rate(struct clk *c)
{
	u64 rate;
	rate = c->parent->rate;
	rate *= c->n;
	do_div(rate, c->m);
	if (c->p == 2)
		rate >>= 1;
	c->rate = rate;
	return c->rate;
}

static int tegra2_pll_clk_wait_for_lock(struct clk *c)
{
	ktime_t before;

	before = ktime_get();
	while (!(clk_readl(c->reg + PLL_BASE) & PLL_BASE_LOCK)) {
		if (ktime_us_delta(ktime_get(), before) > 5000) {
			pr_err("Timed out waiting for lock bit on pll %s",
				c->name);
			return -1;
		}
	}

	return 0;
}

static void tegra2_pll_clk_init(struct clk *c)
{
	u32 val = clk_readl(c->reg + PLL_BASE);

	c->state = (val & PLL_BASE_ENABLE) ? ON : OFF;

	if (c->flags & PLL_FIXED && !(val & PLL_BASE_OVERRIDE)) {
		pr_warning("Clock %s has unknown fixed frequency\n", c->name);
		c->n = 1;
		c->m = 0;
		c->p = 1;
	} else if (val & PLL_BASE_BYPASS) {
		c->n = 1;
		c->m = 1;
		c->p = 1;
	} else {
		c->n = (val & PLL_BASE_DIVN_MASK) >> PLL_BASE_DIVN_SHIFT;
		c->m = (val & PLL_BASE_DIVM_MASK) >> PLL_BASE_DIVM_SHIFT;
		c->p = (val & PLL_BASE_DIVP_MASK) ? 2 : 1;
	}

	val = clk_readl(c->reg + PLL_MISC(c));
	if (c->flags & PLL_HAS_CPCON)
		c->cpcon = (val & PLL_MISC_CPCON_MASK) >> PLL_MISC_CPCON_SHIFT;

	tegra2_pll_clk_recalculate_rate(c);
}

static int tegra2_pll_clk_enable(struct clk *c)
{
	u32 val;
	pr_debug("%s on clock %s\n", __func__, c->name);

	val = clk_readl(c->reg + PLL_BASE);
	val &= ~PLL_BASE_BYPASS;
	val |= PLL_BASE_ENABLE;
	clk_writel(val, c->reg + PLL_BASE);

	val = clk_readl(c->reg + PLL_MISC(c));
	val |= PLL_MISC_LOCK_ENABLE;
	clk_writel(val, c->reg + PLL_MISC(c));

	tegra2_pll_clk_wait_for_lock(c);

	return 0;
}

static void tegra2_pll_clk_disable(struct clk *c)
{
	u32 val;
	pr_debug("%s on clock %s\n", __func__, c->name);

	val = clk_readl(c->reg);
	val &= ~(PLL_BASE_BYPASS | PLL_BASE_ENABLE);
	clk_writel(val, c->reg);
}

static int tegra2_pll_clk_set_rate(struct clk *c, unsigned long rate)
{
	u32 val;
	unsigned long input_rate;
	const struct clk_pll_table *sel;

	pr_debug("%s: %s %lu\n", __func__, c->name, rate);
	BUG_ON(c->refcnt != 0);

	input_rate = c->parent->rate;
	for (sel = c->pll_table; sel->input_rate != 0; sel++) {
		if (sel->input_rate == input_rate && sel->output_rate == rate) {
			c->n = sel->n;
			c->m = sel->m;
			c->p = sel->p;
			c->cpcon = sel->cpcon;

			val = clk_readl(c->reg + PLL_BASE);
			if (c->flags & PLL_FIXED)
				val |= PLL_BASE_OVERRIDE;
			val &= ~(PLL_BASE_DIVP_MASK | PLL_BASE_DIVN_MASK |
				 PLL_BASE_DIVM_MASK);
			val |= (c->m << PLL_BASE_DIVM_SHIFT) |
				(c->n << PLL_BASE_DIVN_SHIFT);
			BUG_ON(c->p > 2);
			if (c->p == 2)
				val |= 1 << PLL_BASE_DIVP_SHIFT;
			clk_writel(val, c->reg + PLL_BASE);

			if (c->flags & PLL_HAS_CPCON) {
				val = c->cpcon << PLL_MISC_CPCON_SHIFT;
				val |= PLL_MISC_LOCK_ENABLE;
				clk_writel(val, c->reg + PLL_MISC(c));
			}

			if (c->state == ON)
				tegra2_pll_clk_enable(c);

			c->rate = rate;
			return 0;
		}
	}
	return -EINVAL;
}

static struct clk_ops tegra_pll_ops = {
	.init			= tegra2_pll_clk_init,
	.enable			= tegra2_pll_clk_enable,
	.disable		= tegra2_pll_clk_disable,
	.set_rate		= tegra2_pll_clk_set_rate,
	.recalculate_rate	= tegra2_pll_clk_recalculate_rate,
};

/* Clock divider ops */
static void tegra2_pll_div_clk_init(struct clk *c)
{
	u32 val = clk_readl(c->reg);
	u32 divu71;
	val >>= c->reg_shift;
	c->state = (val & PLL_OUT_CLKEN) ? ON : OFF;
	if (!(val & PLL_OUT_RESET_DISABLE))
		c->state = OFF;

	if (c->flags & DIV_U71) {
		divu71 = (val & PLL_OUT_RATIO_MASK) >> PLL_OUT_RATIO_SHIFT;
		c->div = (divu71 + 2);
		c->mul = 2;
	} else if (c->flags & DIV_2) {
		c->div = 2;
		c->mul = 1;
	} else {
		c->div = 1;
		c->mul = 1;
	}

	tegra2_clk_recalculate_rate(c);
}

static int tegra2_pll_div_clk_enable(struct clk *c)
{
	u32 val;
	u32 new_val;

	pr_debug("%s: %s\n", __func__, c->name);
	if (c->flags & DIV_U71) {
		val = clk_readl(c->reg);
		new_val = val >> c->reg_shift;
		new_val &= 0xFFFF;

		new_val |= PLL_OUT_CLKEN | PLL_OUT_RESET_DISABLE;

		val &= ~(0xFFFF << c->reg_shift);
		val |= new_val << c->reg_shift;
		clk_writel(val, c->reg);
		return 0;
	} else if (c->flags & DIV_2) {
		BUG_ON(!(c->flags & PLLD));
		val = clk_readl(c->reg);
		val &= ~PLLD_MISC_DIV_RST;
		clk_writel(val, c->reg);
		return 0;
	}
	return -EINVAL;
}

static void tegra2_pll_div_clk_disable(struct clk *c)
{
	u32 val;
	u32 new_val;

	pr_debug("%s: %s\n", __func__, c->name);
	if (c->flags & DIV_U71) {
		val = clk_readl(c->reg);
		new_val = val >> c->reg_shift;
		new_val &= 0xFFFF;

		new_val &= ~(PLL_OUT_CLKEN | PLL_OUT_RESET_DISABLE);

		val &= ~(0xFFFF << c->reg_shift);
		val |= new_val << c->reg_shift;
		clk_writel(val, c->reg);
	} else if (c->flags & DIV_2) {
		BUG_ON(!(c->flags & PLLD));
		val = clk_readl(c->reg);
		val |= PLLD_MISC_DIV_RST;
		clk_writel(val, c->reg);
	}
}

static int tegra2_pll_div_clk_set_rate(struct clk *c, unsigned long rate)
{
	u32 val;
	u32 new_val;
	int divider_u71;
	pr_debug("%s: %s %lu\n", __func__, c->name, rate);
	if (c->flags & DIV_U71) {
		divider_u71 = clk_div71_get_divider(c->parent, rate);
		if (divider_u71 >= 0) {
			val = clk_readl(c->reg);
			new_val = val >> c->reg_shift;
			new_val &= 0xFFFF;
			if (c->flags & DIV_U71_FIXED)
				new_val |= PLL_OUT_OVERRIDE;
			new_val &= ~PLL_OUT_RATIO_MASK;
			new_val |= divider_u71 << PLL_OUT_RATIO_SHIFT;

			val &= ~(0xFFFF << c->reg_shift);
			val |= new_val << c->reg_shift;
			clk_writel(val, c->reg);
			c->div = divider_u71 + 2;
			c->mul = 2;
			tegra2_clk_recalculate_rate(c);
			return 0;
		}
	} else if (c->flags & DIV_2) {
		if (c->parent->rate == rate * 2) {
			c->rate = rate;
			return 0;
		}
	}
	return -EINVAL;
}


static struct clk_ops tegra_pll_div_ops = {
	.init			= tegra2_pll_div_clk_init,
	.enable			= tegra2_pll_div_clk_enable,
	.disable		= tegra2_pll_div_clk_disable,
	.set_rate		= tegra2_pll_div_clk_set_rate,
	.recalculate_rate	= tegra2_clk_recalculate_rate,
};

/* Periph clk ops */

static void tegra2_periph_clk_init(struct clk *c)
{
	u32 val = clk_readl(c->reg);
	const struct clk_mux_sel *mux = 0;
	const struct clk_mux_sel *sel;
	if (c->flags & MUX) {
		for (sel = c->inputs; sel->input != NULL; sel++) {
			if (val >> PERIPH_CLK_SOURCE_SHIFT == sel->value)
				mux = sel;
		}
		BUG_ON(!mux);

		c->parent = mux->input;
	} else {
		c->parent = c->inputs[0].input;
	}

	if (c->flags & DIV_U71) {
		u32 divu71 = val & PERIPH_CLK_SOURCE_DIV_MASK;
		c->div = divu71 + 2;
		c->mul = 2;
	} else {
		c->div = 1;
		c->mul = 1;
	}

	c->state = ON;
	if (!(clk_readl(CLK_OUT_ENB + PERIPH_CLK_TO_ENB_REG(c)) &
			PERIPH_CLK_TO_ENB_BIT(c)))
		c->state = OFF;
	if (!(c->flags & PERIPH_NO_RESET))
		if (clk_readl(RST_DEVICES + PERIPH_CLK_TO_ENB_REG(c)) &
				PERIPH_CLK_TO_ENB_BIT(c))
			c->state = OFF;
	tegra2_clk_recalculate_rate(c);
}

static int tegra2_periph_clk_enable(struct clk *c)
{
	u32 val;
	pr_debug("%s on clock %s\n", __func__, c->name);

	clk_writel(PERIPH_CLK_TO_ENB_BIT(c),
		CLK_OUT_ENB_SET + PERIPH_CLK_TO_ENB_SET_REG(c));
	if (!(c->flags & PERIPH_NO_RESET) && !(c->flags & PERIPH_MANUAL_RESET))
		clk_writel(PERIPH_CLK_TO_ENB_BIT(c),
			RST_DEVICES_CLR + PERIPH_CLK_TO_ENB_SET_REG(c));
	if (c->flags & PERIPH_EMC_ENB) {
		/* The EMC peripheral clock has 2 extra enable bits */
		/* FIXME: Do they need to be disabled? */
		val = clk_readl(c->reg);
		val |= 0x3 << 24;
		clk_writel(val, c->reg);
	}
	return 0;
}

static void tegra2_periph_clk_disable(struct clk *c)
{
	pr_debug("%s on clock %s\n", __func__, c->name);

	clk_writel(PERIPH_CLK_TO_ENB_BIT(c),
		CLK_OUT_ENB_CLR + PERIPH_CLK_TO_ENB_SET_REG(c));
}

void tegra2_periph_reset_deassert(struct clk *c)
{
	pr_debug("%s on clock %s\n", __func__, c->name);
	if (!(c->flags & PERIPH_NO_RESET))
		clk_writel(PERIPH_CLK_TO_ENB_BIT(c),
			RST_DEVICES_CLR + PERIPH_CLK_TO_ENB_SET_REG(c));
}

void tegra2_periph_reset_assert(struct clk *c)
{
	pr_debug("%s on clock %s\n", __func__, c->name);
	if (!(c->flags & PERIPH_NO_RESET))
		clk_writel(PERIPH_CLK_TO_ENB_BIT(c),
			RST_DEVICES_SET + PERIPH_CLK_TO_ENB_SET_REG(c));
}


static int tegra2_periph_clk_set_parent(struct clk *c, struct clk *p)
{
	u32 val;
	const struct clk_mux_sel *sel;
	pr_debug("%s: %s %s\n", __func__, c->name, p->name);
	for (sel = c->inputs; sel->input != NULL; sel++) {
		if (sel->input == p) {
			clk_reparent(c, p);
			val = clk_readl(c->reg);
			val &= ~PERIPH_CLK_SOURCE_MASK;
			val |= (sel->value) << PERIPH_CLK_SOURCE_SHIFT;
			clk_writel(val, c->reg);
			c->rate = c->parent->rate;
			return 0;
		}
	}

	return -EINVAL;
}

static int tegra2_periph_clk_set_rate(struct clk *c, unsigned long rate)
{
	u32 val;
	int divider_u71;
	pr_debug("%s: %lu\n", __func__, rate);
	if (c->flags & DIV_U71) {
		divider_u71 = clk_div71_get_divider(c->parent, rate);
		if (divider_u71 >= 0) {
			val = clk_readl(c->reg);
			val &= ~PERIPH_CLK_SOURCE_DIV_MASK;
			val |= divider_u71;
			clk_writel(val, c->reg);
			c->div = divider_u71 + 2;
			c->mul = 2;
			tegra2_clk_recalculate_rate(c);
			return 0;
		}
	}
	return -EINVAL;
}

static struct clk_ops tegra_periph_clk_ops = {
	.init			= &tegra2_periph_clk_init,
	.enable			= &tegra2_periph_clk_enable,
	.disable		= &tegra2_periph_clk_disable,
	.set_parent		= &tegra2_periph_clk_set_parent,
	.set_rate		= &tegra2_periph_clk_set_rate,
	.recalculate_rate	= &tegra2_clk_recalculate_rate,
};

/* Clock doubler ops */
static void tegra2_clk_double_init(struct clk *c)
{
	c->mul = 2;
	c->div = 1;
	c->state = ON;
	if (!(clk_readl(CLK_OUT_ENB + PERIPH_CLK_TO_ENB_REG(c)) &
			PERIPH_CLK_TO_ENB_BIT(c)))
		c->state = OFF;
	tegra2_clk_recalculate_rate(c);
};

static struct clk_ops tegra_clk_double_ops = {
	.init			= &tegra2_clk_double_init,
	.enable			= &tegra2_periph_clk_enable,
	.disable		= &tegra2_periph_clk_disable,
	.recalculate_rate	= &tegra2_clk_recalculate_rate,
};

/* Clock definitions */
static struct clk tegra_clk_32k = {
	.name = "clk_32k",
	.rate = 32678,
	.ops  = NULL,
};

static struct clk_pll_table tegra_pll_s_table[] = {
	{32768, 12000000, 366, 1, 1, 0},
	{32768, 13000000, 397, 1, 1, 0},
	{32768, 19200000, 586, 1, 1, 0},
	{32768, 26000000, 793, 1, 1, 0},
	{0, 0, 0, 0, 0, 0},
};

static struct clk tegra_pll_s = {
	.name      = "pll_s",
	.flags     = PLL_ALT_MISC_REG,
	.ops       = &tegra_pll_ops,
	.reg       = 0xf0,
	.input_min = 32768,
	.input_max = 32768,
	.parent    = &tegra_clk_32k,
	.cf_min    = 0, /* FIXME */
	.cf_max    = 0, /* FIXME */
	.vco_min   = 12000000,
	.vco_max   = 26000000,
	.pll_table = tegra_pll_s_table,
};

static struct clk_mux_sel tegra_clk_m_sel[] = {
	{ .input = &tegra_clk_32k, .value = 0},
	{ .input = &tegra_pll_s,  .value = 1},
	{ 0, 0},
};
static struct clk tegra_clk_m = {
	.name      = "clk_m",
	.flags     = ENABLE_ON_INIT,
	.ops       = &tegra_clk_m_ops,
	.inputs    = tegra_clk_m_sel,
	.reg       = 0x1fc,
	.reg_mask  = (1<<28),
	.reg_shift = 28,
};

static struct clk_pll_table tegra_pll_c_table[] = {
	{ 0, 0, 0, 0, 0, 0 },
};

static struct clk tegra_pll_c = {
	.name      = "pll_c",
	.flags	   = PLL_HAS_CPCON,
	.ops       = &tegra_pll_ops,
	.reg       = 0x80,
	.input_min = 2000000,
	.input_max = 31000000,
	.parent    = &tegra_clk_m,
	.cf_min    = 1000000,
	.cf_max    = 6000000,
	.vco_min   = 20000000,
	.vco_max   = 1400000000,
	.pll_table = tegra_pll_c_table,
};

static struct clk tegra_pll_c_out1 = {
	.name      = "pll_c_out1",
	.ops       = &tegra_pll_div_ops,
	.flags     = DIV_U71,
	.parent    = &tegra_pll_c,
	.reg       = 0x84,
	.reg_shift = 0,
};

static struct clk_pll_table tegra_pll_m_table[] = {
	{ 0, 0, 0, 0, 0, 0 },
};

static struct clk tegra_pll_m = {
	.name      = "pll_m",
	.flags     = PLL_HAS_CPCON,
	.ops       = &tegra_pll_ops,
	.reg       = 0x90,
	.input_min = 2000000,
	.input_max = 31000000,
	.parent    = &tegra_clk_m,
	.cf_min    = 1000000,
	.cf_max    = 6000000,
	.vco_min   = 20000000,
	.vco_max   = 1200000000,
	.pll_table = tegra_pll_m_table,
};

static struct clk tegra_pll_m_out1 = {
	.name      = "pll_m_out1",
	.ops       = &tegra_pll_div_ops,
	.flags     = DIV_U71,
	.parent    = &tegra_pll_m,
	.reg       = 0x94,
	.reg_shift = 0,
};

static struct clk_pll_table tegra_pll_p_table[] = {
	{ 12000000, 216000000, 432, 12, 2, 8},
	{ 13000000, 216000000, 432, 13, 2, 8},
	{ 19200000, 216000000, 90,   4, 2, 1},
	{ 26000000, 216000000, 432, 26, 2, 8},
	{ 12000000, 432000000, 432, 12, 1, 8},
	{ 13000000, 432000000, 432, 13, 1, 8},
	{ 19200000, 432000000, 90,   4, 1, 1},
	{ 26000000, 432000000, 432, 26, 1, 8},
	{ 0, 0, 0, 0, 0, 0 },
};

static struct clk tegra_pll_p = {
	.name      = "pll_p",
	.flags     = ENABLE_ON_INIT | PLL_FIXED | PLL_HAS_CPCON,
	.ops       = &tegra_pll_ops,
	.reg       = 0xa0,
	.input_min = 2000000,
	.input_max = 31000000,
	.parent    = &tegra_clk_m,
	.cf_min    = 1000000,
	.cf_max    = 6000000,
	.vco_min   = 20000000,
	.vco_max   = 1400000000,
	.pll_table = tegra_pll_p_table,
};

static struct clk tegra_pll_p_out1 = {
	.name      = "pll_p_out1",
	.ops       = &tegra_pll_div_ops,
	.flags     = ENABLE_ON_INIT | DIV_U71 | DIV_U71_FIXED,
	.parent    = &tegra_pll_p,
	.reg       = 0xa4,
	.reg_shift = 0,
};

static struct clk tegra_pll_p_out2 = {
	.name      = "pll_p_out2",
	.ops       = &tegra_pll_div_ops,
	.flags     = ENABLE_ON_INIT | DIV_U71 | DIV_U71_FIXED,
	.parent    = &tegra_pll_p,
	.reg       = 0xa4,
	.reg_shift = 16,
};

static struct clk tegra_pll_p_out3 = {
	.name      = "pll_p_out3",
	.ops       = &tegra_pll_div_ops,
	.flags     = ENABLE_ON_INIT | DIV_U71 | DIV_U71_FIXED,
	.parent    = &tegra_pll_p,
	.reg       = 0xa8,
	.reg_shift = 0,
};

static struct clk tegra_pll_p_out4 = {
	.name      = "pll_p_out4",
	.ops       = &tegra_pll_div_ops,
	.flags     = ENABLE_ON_INIT | DIV_U71 | DIV_U71_FIXED,
	.parent    = &tegra_pll_p,
	.reg       = 0xa8,
	.reg_shift = 16,
};

static struct clk_pll_table tegra_pll_a_table[] = {
	{ 28800000, 56448000, 49, 25, 1, 1},
	{ 28800000, 73728000, 64, 25, 1, 1},
	{ 28800000, 11289600, 49, 25, 1, 1},
	{ 28800000, 12288000, 64, 25, 1, 1},
	{ 0, 0, 0, 0, 0, 0 },
};

static struct clk tegra_pll_a = {
	.name      = "pll_a",
	.flags     = PLL_HAS_CPCON,
	.ops       = &tegra_pll_ops,
	.reg       = 0xb0,
	.input_min = 2000000,
	.input_max = 31000000,
	.parent    = &tegra_pll_p_out1,
	.cf_min    = 1000000,
	.cf_max    = 6000000,
	.vco_min   = 20000000,
	.vco_max   = 1400000000,
	.pll_table = tegra_pll_a_table,
};

static struct clk tegra_pll_a_out0 = {
	.name      = "pll_a_out0",
	.ops       = &tegra_pll_div_ops,
	.flags     = DIV_U71,
	.parent    = &tegra_pll_a,
	.reg       = 0xb4,
	.reg_shift = 0,
};

static struct clk_pll_table tegra_pll_d_table[] = {
	{ 12000000, 1000000000, 1000, 12, 1, 12},
	{ 13000000, 1000000000, 1000, 13, 1, 12},
	{ 19200000, 1000000000, 625,  12, 1, 8},
	{ 26000000, 1000000000, 1000, 26, 1, 12},
	{ 0, 0, 0, 0, 0, 0 },
};

static struct clk tegra_pll_d = {
	.name      = "pll_d",
	.flags     = PLL_HAS_CPCON | PLLD,
	.ops       = &tegra_pll_ops,
	.reg       = 0xd0,
	.input_min = 2000000,
	.input_max = 40000000,
	.parent    = &tegra_clk_m,
	.cf_min    = 1000000,
	.cf_max    = 6000000,
	.vco_min   = 40000000,
	.vco_max   = 1000000000,
	.pll_table = tegra_pll_d_table,
};

static struct clk tegra_pll_d_out0 = {
	.name      = "pll_d_out0",
	.ops       = &tegra_pll_div_ops,
	.flags     = DIV_2 | PLLD,
	.parent    = &tegra_pll_d,
};

static struct clk_pll_table tegra_pll_u_table[] = {
	{ 12000000, 480000000, 960, 12, 1, 0},
	{ 13000000, 480000000, 960, 13, 1, 0},
	{ 19200000, 480000000, 200, 4,  1, 0},
	{ 26000000, 480000000, 960, 26, 1, 0},
	{ 0, 0, 0, 0, 0, 0 },
};

static struct clk tegra_pll_u = {
	.name      = "pll_u",
	.flags     = 0,
	.ops       = &tegra_pll_ops,
	.reg       = 0xc0,
	.input_min = 2000000,
	.input_max = 40000000,
	.parent    = &tegra_clk_m,
	.cf_min    = 1000000,
	.cf_max    = 6000000,
	.vco_min   = 480000000,
	.vco_max   = 960000000,
	.pll_table = tegra_pll_u_table,
};

static struct clk_pll_table tegra_pll_x_table[] = {
	{ 12000000, 1000000000, 1000, 12, 1, 12},
	{ 13000000, 1000000000, 1000, 13, 1, 12},
	{ 19200000, 1000000000, 625,  12, 1, 8},
	{ 26000000, 1000000000, 1000, 26, 1, 12},
	{ 12000000, 750000000,  750,  12, 1, 12},
	{ 13000000, 750000000,  750,  13, 1, 12},
	{ 19200000, 750000000,  625,  16, 1, 8},
	{ 26000000, 750000000,  750,  26, 1, 12},
	{ 0, 0, 0, 0, 0, 0 },
};

static struct clk tegra_pll_x = {
	.name      = "pll_x",
	.flags     = PLL_HAS_CPCON | PLL_ALT_MISC_REG,
	.ops       = &tegra_pll_ops,
	.reg       = 0xe0,
	.input_min = 2000000,
	.input_max = 31000000,
	.parent    = &tegra_clk_m,
	.cf_min    = 1000000,
	.cf_max    = 6000000,
	.vco_min   = 20000000,
	.vco_max   = 1200000000,
	.pll_table = tegra_pll_x_table,
};

static struct clk tegra_clk_d = {
	.name      = "clk_d",
	.flags     = PERIPH_NO_RESET,
	.ops       = &tegra_clk_double_ops,
	.clk_num   = 90,
	.reg       = 0x34,
	.reg_shift = 12,
	.parent    = &tegra_clk_m,
};

/* FIXME: need tegra_audio
static struct clk tegra_clk_audio_2x = {
	.name      = "clk_d",
	.flags     = PERIPH_NO_RESET,
	.ops       = &tegra_clk_double_ops,
	.clk_num   = 89,
	.reg       = 0x34,
	.reg_shift = 8,
	.parent    = &tegra_audio,
}
*/

static struct clk_mux_sel mux_cclk[] = {
	{ .input = &tegra_clk_m,	.value = 0},
	{ .input = &tegra_pll_c,	.value = 1},
	{ .input = &tegra_clk_32k,	.value = 2},
	{ .input = &tegra_pll_m,	.value = 3},
	{ .input = &tegra_pll_p,	.value = 4},
	{ .input = &tegra_pll_p_out4,	.value = 5},
	{ .input = &tegra_pll_p_out3,	.value = 6},
	{ .input = &tegra_clk_d,	.value = 7},
	{ .input = &tegra_pll_x,	.value = 8},
	{ 0, 0},
};

static struct clk_mux_sel mux_sclk[] = {
	{ .input = &tegra_clk_m,	.value = 0},
	{ .input = &tegra_pll_c_out1,	.value = 1},
	{ .input = &tegra_pll_p_out4,	.value = 2},
	{ .input = &tegra_pll_p_out3,	.value = 3},
	{ .input = &tegra_pll_p_out2,	.value = 4},
	{ .input = &tegra_clk_d,	.value = 5},
	{ .input = &tegra_clk_32k,	.value = 6},
	{ .input = &tegra_pll_m_out1,	.value = 7},
	{ 0, 0},
};

static struct clk tegra_clk_cpu = {
	.name	= "cpu",
	.inputs	= mux_cclk,
	.reg	= 0x20,
	.ops	= &tegra_super_ops,
};

static struct clk tegra_clk_sys = {
	.name	= "sys",
	.inputs	= mux_sclk,
	.reg	= 0x28,
	.ops	= &tegra_super_ops,
};

static struct clk tegra_clk_hclk = {
	.name		= "hclk",
	.flags		= DIV_BUS,
	.parent		= &tegra_clk_sys,
	.reg		= 0x30,
	.reg_shift	= 4,
	.ops		= &tegra_bus_ops,
};

static struct clk tegra_clk_pclk = {
	.name		= "pclk",
	.flags		= DIV_BUS,
	.parent		= &tegra_clk_hclk,
	.reg		= 0x30,
	.reg_shift	= 0,
	.ops		= &tegra_bus_ops,
};

static struct clk_mux_sel mux_pllm_pllc_pllp_plla[] = {
	{ .input = &tegra_pll_m, .value = 0},
	{ .input = &tegra_pll_c, .value = 1},
	{ .input = &tegra_pll_p, .value = 2},
	{ .input = &tegra_pll_a_out0, .value = 3},
	{ 0, 0},
};

static struct clk_mux_sel mux_pllm_pllc_pllp_clkm[] = {
	{ .input = &tegra_pll_m, .value = 0},
	{ .input = &tegra_pll_c, .value = 1},
	{ .input = &tegra_pll_p, .value = 2},
	{ .input = &tegra_clk_m, .value = 3},
	{ 0, 0},
};

static struct clk_mux_sel mux_pllp_pllc_pllm_clkm[] = {
	{ .input = &tegra_pll_p, .value = 0},
	{ .input = &tegra_pll_c, .value = 1},
	{ .input = &tegra_pll_m, .value = 2},
	{ .input = &tegra_clk_m, .value = 3},
	{ 0, 0},
};

static struct clk_mux_sel mux_plla_audio_pllp_clkm[] = {
	{.input = &tegra_pll_a, .value = 0},
	/* FIXME: no mux defined for tegra_audio
	{.input = &tegra_audio, .value = 1},*/
	{.input = &tegra_pll_p, .value = 2},
	{.input = &tegra_clk_m, .value = 3},
	{ 0, 0},
};

static struct clk_mux_sel mux_pllp_plld_pllc_clkm[] = {
	{.input = &tegra_pll_p, .value = 0},
	{.input = &tegra_pll_d_out0, .value = 1},
	{.input = &tegra_pll_c, .value = 2},
	{.input = &tegra_clk_m, .value = 3},
	{ 0, 0},
};

static struct clk_mux_sel mux_pllp_pllc_audio_clkm_clk32[] = {
	{.input = &tegra_pll_p,     .value = 0},
	{.input = &tegra_pll_c,     .value = 1},
	/* FIXME: no mux defined for tegra_audio
	{.input = &tegra_audio,     .value = 2},*/
	{.input = &tegra_clk_m,     .value = 3},
	{.input = &tegra_clk_32k,   .value = 4},
	{ 0, 0},
};

static struct clk_mux_sel mux_pllp_pllc_pllm[] = {
	{.input = &tegra_pll_p,     .value = 0},
	{.input = &tegra_pll_c,     .value = 1},
	{.input = &tegra_pll_m,     .value = 2},
	{ 0, 0},
};

static struct clk_mux_sel mux_clk_m[] = {
	{ .input = &tegra_clk_m, .value = 0},
	{ 0, 0},
};

static struct clk_mux_sel mux_pllp_out3[] = {
	{ .input = &tegra_pll_p_out3, .value = 0},
	{ 0, 0},
};

static struct clk_mux_sel mux_plld[] = {
	{ .input = &tegra_pll_d, .value = 0},
	{ 0, 0},
};

static struct clk_mux_sel mux_clk_32k[] = {
	{ .input = &tegra_clk_32k, .value = 0},
	{ 0, 0},
};

#define PERIPH_CLK(_name, _dev, _con, _clk_num, _reg, _inputs, _flags) \
	{						\
		.name      = _name,			\
		.lookup    = {				\
			.dev_id    = _dev,		\
			.con_id	   = _con,		\
		},					\
		.ops       = &tegra_periph_clk_ops,	\
		.clk_num   = _clk_num,			\
		.reg       = _reg,			\
		.inputs    = _inputs,			\
		.flags     = _flags,			\
	}

struct clk tegra_periph_clks[] = {
	PERIPH_CLK("rtc",	"rtc-tegra",		NULL,	4,	0,	mux_clk_32k,			PERIPH_NO_RESET),
	PERIPH_CLK("timer",	"timer",		NULL,	5,	0,	mux_clk_m,			0),
	PERIPH_CLK("i2s1",	"i2s.0",		NULL,	11,	0x100,	mux_plla_audio_pllp_clkm,	MUX | DIV_U71),
	PERIPH_CLK("i2s2",	"i2s.1",		NULL,	18,	0x104,	mux_plla_audio_pllp_clkm,	MUX | DIV_U71),
	/* FIXME: spdif has 2 clocks but 1 enable */
	PERIPH_CLK("spdif_out",	"spdif_out",		NULL,	10,	0x108,	mux_plla_audio_pllp_clkm,	MUX | DIV_U71),
	PERIPH_CLK("spdif_in",	"spdif_in",		NULL,	10,	0x10c,	mux_pllp_pllc_pllm,		MUX | DIV_U71),
	PERIPH_CLK("pwm",	"pwm",			NULL,	17,	0x110,	mux_pllp_pllc_audio_clkm_clk32,	MUX | DIV_U71),
	PERIPH_CLK("spi",	"spi",			NULL,	43,	0x114,	mux_pllp_pllc_pllm_clkm,	MUX | DIV_U71),
	PERIPH_CLK("xio",	"xio",			NULL,	45,	0x120,	mux_pllp_pllc_pllm_clkm,	MUX | DIV_U71),
	PERIPH_CLK("twc",	"twc",			NULL,	16,	0x12c,	mux_pllp_pllc_pllm_clkm,	MUX | DIV_U71),
	PERIPH_CLK("sbc1",	"spi_tegra.0",		NULL,	41,	0x134,	mux_pllp_pllc_pllm_clkm,	MUX | DIV_U71),
	PERIPH_CLK("sbc2",	"spi_tegra.1",		NULL,	44,	0x118,	mux_pllp_pllc_pllm_clkm,	MUX | DIV_U71),
	PERIPH_CLK("sbc3",	"spi_tegra.2",		NULL,	46,	0x11c,	mux_pllp_pllc_pllm_clkm,	MUX | DIV_U71),
	PERIPH_CLK("sbc4",	"spi_tegra.3",		NULL,	68,	0x1b4,	mux_pllp_pllc_pllm_clkm,	MUX | DIV_U71),
	PERIPH_CLK("ide",	"ide",			NULL,	25,	0x144,	mux_pllp_pllc_pllm_clkm,	MUX | DIV_U71),
	PERIPH_CLK("ndflash",	"tegra_nand",		NULL,	13,	0x160,	mux_pllp_pllc_pllm_clkm,	MUX | DIV_U71),
	/* FIXME: vfir shares an enable with uartb */
	PERIPH_CLK("vfir",	"vfir",			NULL,	7,	0x168,	mux_pllp_pllc_pllm_clkm,	MUX | DIV_U71),
	PERIPH_CLK("sdmmc1",	"sdhci-tegra.0",	NULL,	14,	0x150,	mux_pllp_pllc_pllm_clkm,	MUX | DIV_U71),
	PERIPH_CLK("sdmmc2",	"sdhci-tegra.1",	NULL,	9,	0x154,	mux_pllp_pllc_pllm_clkm,	MUX | DIV_U71),
	PERIPH_CLK("sdmmc3",	"sdhci-tegra.2",	NULL,	69,	0x1bc,	mux_pllp_pllc_pllm_clkm,	MUX | DIV_U71),
	PERIPH_CLK("sdmmc4",	"sdhci-tegra.3",	NULL,	15,	0x160,	mux_pllp_pllc_pllm_clkm,	MUX | DIV_U71),
	PERIPH_CLK("vde",	"vde",			NULL,	61,	0x1c8,	mux_pllp_pllc_pllm_clkm,	MUX | DIV_U71),
	PERIPH_CLK("csite",	"csite",		NULL,	73,	0x1d4,	mux_pllp_pllc_pllm_clkm,	MUX | DIV_U71),
	/* FIXME: what is la? */
	PERIPH_CLK("la",	"la",			NULL,	76,	0x1f8,	mux_pllp_pllc_pllm_clkm,	MUX | DIV_U71),
	PERIPH_CLK("owr",	"owr",			NULL,	71,	0x1cc,	mux_pllp_pllc_pllm_clkm,	MUX | DIV_U71),
	PERIPH_CLK("nor",	"nor",			NULL,	42,	0x1d0,	mux_pllp_pllc_pllm_clkm,	MUX | DIV_U71),
	PERIPH_CLK("mipi",	"mipi",			NULL,	50,	0x174,	mux_pllp_pllc_pllm_clkm,	MUX | DIV_U71),
	PERIPH_CLK("i2c1",	"tegra-i2c.0",		NULL,	12,	0x124,	mux_pllp_pllc_pllm_clkm,	MUX | DIV_U71),
	PERIPH_CLK("i2c2",	"tegra-i2c.1",		NULL,	54,	0x198,	mux_pllp_pllc_pllm_clkm,	MUX | DIV_U71),
	PERIPH_CLK("i2c3",	"tegra-i2c.2",		NULL,	67,	0x1b8,	mux_pllp_pllc_pllm_clkm,	MUX | DIV_U71),
	PERIPH_CLK("dvc",	"tegra-i2c.3",		NULL,	47,	0x128,	mux_pllp_pllc_pllm_clkm,	MUX | DIV_U71),
	PERIPH_CLK("i2c1_i2c",	"tegra-i2c.0",		"i2c",	0,	0,	mux_pllp_out3,			0),
	PERIPH_CLK("i2c2_i2c",	"tegra-i2c.1",		"i2c",	0,	0,	mux_pllp_out3,			0),
	PERIPH_CLK("i2c3_i2c",	"tegra-i2c.2",		"i2c",	0,	0,	mux_pllp_out3,			0),
	PERIPH_CLK("dvc_i2c",	"tegra-i2c.3",		"i2c",	0,	0,	mux_pllp_out3,			0),
	PERIPH_CLK("uarta",	"uart.0",		NULL,	6,	0x178,	mux_pllp_pllc_pllm_clkm,	MUX | DIV_U71),
	PERIPH_CLK("uartb",	"uart.1",		NULL,	7,	0x17c,	mux_pllp_pllc_pllm_clkm,	MUX | DIV_U71),
	PERIPH_CLK("uartc",	"uart.2",		NULL,	55,	0x1a0,	mux_pllp_pllc_pllm_clkm,	MUX | DIV_U71),
	PERIPH_CLK("uartd",	"uart.3",		NULL,	65,	0x1c0,	mux_pllp_pllc_pllm_clkm,	MUX | DIV_U71),
	PERIPH_CLK("uarte",	"uart.4",		NULL,	66,	0x1c4,	mux_pllp_pllc_pllm_clkm,	MUX | DIV_U71),
	PERIPH_CLK("3d",	"3d",			NULL,	24,	0x158,	mux_pllm_pllc_pllp_plla,	MUX | DIV_U71 | PERIPH_MANUAL_RESET),
	PERIPH_CLK("2d",	"2d",			NULL,	21,	0x15c,	mux_pllm_pllc_pllp_plla,	MUX | DIV_U71),
	/* FIXME: vi and vi_sensor share an enable */
	PERIPH_CLK("vi",	"vi",			NULL,	20,	0x148,	mux_pllm_pllc_pllp_plla,	MUX | DIV_U71),
	PERIPH_CLK("vi_sensor",	"vi_sensor",		NULL,	20,	0x1a8,	mux_pllm_pllc_pllp_plla,	MUX | DIV_U71),
	PERIPH_CLK("epp",	"epp",			NULL,	19,	0x16c,	mux_pllm_pllc_pllp_plla,	MUX | DIV_U71),
	PERIPH_CLK("mpe",	"mpe",			NULL,	60,	0x170,	mux_pllm_pllc_pllp_plla,	MUX | DIV_U71),
	PERIPH_CLK("host1x",	"host1x",		NULL,	28,	0x180,	mux_pllm_pllc_pllp_plla,	MUX | DIV_U71),
	/* FIXME: cve and tvo share an enable	*/
	PERIPH_CLK("cve",	"cve",			NULL,	49,	0x140,	mux_pllp_plld_pllc_clkm,	MUX | DIV_U71),
	PERIPH_CLK("tvo",	"tvo",			NULL,	49,	0x188,	mux_pllp_plld_pllc_clkm,	MUX | DIV_U71),
	PERIPH_CLK("hdmi",	"hdmi",			NULL,	51,	0x18c,	mux_pllp_plld_pllc_clkm,	MUX | DIV_U71),
	PERIPH_CLK("tvdac",	"tvdac",		NULL,	53,	0x194,	mux_pllp_plld_pllc_clkm,	MUX | DIV_U71),
	PERIPH_CLK("disp1",	"tegrafb.0",		NULL,	27,	0x138,	mux_pllp_plld_pllc_clkm,	MUX | DIV_U71),
	PERIPH_CLK("disp2",	"tegrafb.1",		NULL,	26,	0x13c,	mux_pllp_plld_pllc_clkm,	MUX | DIV_U71),
	PERIPH_CLK("usbd",	"fsl-tegra-udc",	NULL,	22,	0,	mux_clk_m,			0),
	PERIPH_CLK("usb2",	"usb.1",		NULL,	58,	0,	mux_clk_m,			0),
	PERIPH_CLK("usb3",	"usb.2",		NULL,	59,	0,	mux_clk_m,			0),
	PERIPH_CLK("emc",	"emc",			NULL,	57,	0x19c,	mux_pllm_pllc_pllp_clkm,	MUX | DIV_U71 | PERIPH_EMC_ENB),
	PERIPH_CLK("dsi",	"dsi",			NULL,	48,	0,	mux_plld,			0),
};

#define CLK_DUPLICATE(_name, _dev, _con)		\
	{						\
		.name	= _name,			\
		.lookup	= {				\
			.dev_id	= _dev,			\
			.con_id		= _con,		\
		},					\
	}

/* Some clocks may be used by different drivers depending on the board
 * configuration.  List those here to register them twice in the clock lookup
 * table under two names.
 */
struct clk_duplicate tegra_clk_duplicates[] = {
	CLK_DUPLICATE("uarta",	"tegra_uart.0",	NULL),
	CLK_DUPLICATE("uartb",	"tegra_uart.1",	NULL),
	CLK_DUPLICATE("uartc",	"tegra_uart.2",	NULL),
	CLK_DUPLICATE("uartd",	"tegra_uart.3",	NULL),
	CLK_DUPLICATE("uarte",	"tegra_uart.4",	NULL),
};

#define CLK(dev, con, ck)	\
	{			\
		.dev_id = dev,	\
		.con_id = con,	\
		.clk = ck,	\
	}

struct clk_lookup tegra_clk_lookups[] = {
	/* external root sources */
	CLK(NULL,	"32k_clk",	&tegra_clk_32k),
	CLK(NULL,	"pll_s",	&tegra_pll_s),
	CLK(NULL,	"clk_m",	&tegra_clk_m),
	CLK(NULL,	"pll_m",	&tegra_pll_m),
	CLK(NULL,	"pll_m_out1",	&tegra_pll_m_out1),
	CLK(NULL,	"pll_c",	&tegra_pll_c),
	CLK(NULL,	"pll_c_out1",	&tegra_pll_c_out1),
	CLK(NULL,	"pll_p",	&tegra_pll_p),
	CLK(NULL,	"pll_p_out1",	&tegra_pll_p_out1),
	CLK(NULL,	"pll_p_out2",	&tegra_pll_p_out2),
	CLK(NULL,	"pll_p_out3",	&tegra_pll_p_out3),
	CLK(NULL,	"pll_p_out4",	&tegra_pll_p_out4),
	CLK(NULL,	"pll_a",	&tegra_pll_a),
	CLK(NULL,	"pll_a_out0",	&tegra_pll_a_out0),
	CLK(NULL,	"pll_d",	&tegra_pll_d),
	CLK(NULL,	"pll_d_out0",	&tegra_pll_d_out0),
	CLK(NULL,	"pll_u",	&tegra_pll_u),
	CLK(NULL,	"pll_x",	&tegra_pll_x),
	CLK(NULL,	"cpu",		&tegra_clk_cpu),
	CLK(NULL,	"sys",		&tegra_clk_sys),
	CLK(NULL,	"hclk",		&tegra_clk_hclk),
	CLK(NULL,	"pclk",		&tegra_clk_pclk),
	CLK(NULL,	"clk_d",	&tegra_clk_d),
};

void __init tegra2_init_clocks(void)
{
	int i;
	struct clk_lookup *cl;
	struct clk *c;
	struct clk_duplicate *cd;

	for (i = 0; i < ARRAY_SIZE(tegra_clk_lookups); i++) {
		cl = &tegra_clk_lookups[i];
		clk_init(cl->clk);
		clkdev_add(cl);
	}

	for (i = 0; i < ARRAY_SIZE(tegra_periph_clks); i++) {
		c = &tegra_periph_clks[i];
		cl = &c->lookup;
		cl->clk = c;

		clk_init(cl->clk);
		clkdev_add(cl);
	}

	for (i = 0; i < ARRAY_SIZE(tegra_clk_duplicates); i++) {
		cd = &tegra_clk_duplicates[i];
		c = tegra_get_clock_by_name(cd->name);
		if (c) {
			cl = &cd->lookup;
			cl->clk = c;
			clkdev_add(cl);
		} else {
			pr_err("%s: Unknown duplicate clock %s\n", __func__,
				cd->name);
		}
	}
}