2 * arch/arm/mach-tegra/tegra2_clocks.c
4 * Copyright (C) 2010 Google, Inc.
7 * Colin Cross <ccross@google.com>
9 * This software is licensed under the terms of the GNU General Public
10 * License version 2, as published by the Free Software Foundation, and
11 * may be copied, distributed, and modified under those terms.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
20 #include <linux/kernel.h>
21 #include <linux/module.h>
22 #include <linux/list.h>
23 #include <linux/spinlock.h>
24 #include <linux/delay.h>
26 #include <linux/clkdev.h>
27 #include <linux/clk.h>
29 #include <mach/iomap.h>
30 #include <mach/suspend.h>
34 #include "tegra2_emc.h"
36 #define RST_DEVICES 0x004
37 #define RST_DEVICES_SET 0x300
38 #define RST_DEVICES_CLR 0x304
39 #define RST_DEVICES_NUM 3
41 #define CLK_OUT_ENB 0x010
42 #define CLK_OUT_ENB_SET 0x320
43 #define CLK_OUT_ENB_CLR 0x324
44 #define CLK_OUT_ENB_NUM 3
46 #define CLK_MASK_ARM 0x44
47 #define MISC_CLK_ENB 0x48
50 #define OSC_CTRL_OSC_FREQ_MASK (3<<30)
51 #define OSC_CTRL_OSC_FREQ_13MHZ (0<<30)
52 #define OSC_CTRL_OSC_FREQ_19_2MHZ (1<<30)
53 #define OSC_CTRL_OSC_FREQ_12MHZ (2<<30)
54 #define OSC_CTRL_OSC_FREQ_26MHZ (3<<30)
55 #define OSC_CTRL_MASK (0x3f2 | OSC_CTRL_OSC_FREQ_MASK)
57 #define OSC_FREQ_DET 0x58
58 #define OSC_FREQ_DET_TRIG (1<<31)
60 #define OSC_FREQ_DET_STATUS 0x5C
61 #define OSC_FREQ_DET_BUSY (1<<31)
62 #define OSC_FREQ_DET_CNT_MASK 0xFFFF
64 #define PERIPH_CLK_SOURCE_I2S1 0x100
65 #define PERIPH_CLK_SOURCE_EMC 0x19c
66 #define PERIPH_CLK_SOURCE_OSC 0x1fc
67 #define PERIPH_CLK_SOURCE_NUM \
68 ((PERIPH_CLK_SOURCE_OSC - PERIPH_CLK_SOURCE_I2S1) / 4)
70 #define PERIPH_CLK_SOURCE_MASK (3<<30)
71 #define PERIPH_CLK_SOURCE_SHIFT 30
72 #define PERIPH_CLK_SOURCE_ENABLE (1<<28)
73 #define PERIPH_CLK_SOURCE_DIVU71_MASK 0xFF
74 #define PERIPH_CLK_SOURCE_DIVU16_MASK 0xFFFF
75 #define PERIPH_CLK_SOURCE_DIV_SHIFT 0
77 #define SDMMC_CLK_INT_FB_SEL (1 << 23)
78 #define SDMMC_CLK_INT_FB_DLY_SHIFT 16
79 #define SDMMC_CLK_INT_FB_DLY_MASK (0xF << SDMMC_CLK_INT_FB_DLY_SHIFT)
82 #define PLL_BASE_BYPASS (1<<31)
83 #define PLL_BASE_ENABLE (1<<30)
84 #define PLL_BASE_REF_ENABLE (1<<29)
85 #define PLL_BASE_OVERRIDE (1<<28)
86 #define PLL_BASE_DIVP_MASK (0x7<<20)
87 #define PLL_BASE_DIVP_SHIFT 20
88 #define PLL_BASE_DIVN_MASK (0x3FF<<8)
89 #define PLL_BASE_DIVN_SHIFT 8
90 #define PLL_BASE_DIVM_MASK (0x1F)
91 #define PLL_BASE_DIVM_SHIFT 0
93 #define PLL_OUT_RATIO_MASK (0xFF<<8)
94 #define PLL_OUT_RATIO_SHIFT 8
95 #define PLL_OUT_OVERRIDE (1<<2)
96 #define PLL_OUT_CLKEN (1<<1)
97 #define PLL_OUT_RESET_DISABLE (1<<0)
99 #define PLL_MISC(c) (((c)->flags & PLL_ALT_MISC_REG) ? 0x4 : 0xc)
101 #define PLL_MISC_DCCON_SHIFT 20
102 #define PLL_MISC_CPCON_SHIFT 8
103 #define PLL_MISC_CPCON_MASK (0xF<<PLL_MISC_CPCON_SHIFT)
104 #define PLL_MISC_LFCON_SHIFT 4
105 #define PLL_MISC_LFCON_MASK (0xF<<PLL_MISC_LFCON_SHIFT)
106 #define PLL_MISC_VCOCON_SHIFT 0
107 #define PLL_MISC_VCOCON_MASK (0xF<<PLL_MISC_VCOCON_SHIFT)
109 #define PLLU_BASE_POST_DIV (1<<20)
111 #define PLLD_MISC_CLKENABLE (1<<30)
112 #define PLLD_MISC_DIV_RST (1<<23)
113 #define PLLD_MISC_DCCON_SHIFT 12
115 #define PLLE_MISC_READY (1 << 15)
117 #define PERIPH_CLK_TO_ENB_REG(c) ((c->u.periph.clk_num / 32) * 4)
118 #define PERIPH_CLK_TO_ENB_SET_REG(c) ((c->u.periph.clk_num / 32) * 8)
119 #define PERIPH_CLK_TO_ENB_BIT(c) (1 << (c->u.periph.clk_num % 32))
121 #define SUPER_CLK_MUX 0x00
122 #define SUPER_STATE_SHIFT 28
123 #define SUPER_STATE_MASK (0xF << SUPER_STATE_SHIFT)
124 #define SUPER_STATE_STANDBY (0x0 << SUPER_STATE_SHIFT)
125 #define SUPER_STATE_IDLE (0x1 << SUPER_STATE_SHIFT)
126 #define SUPER_STATE_RUN (0x2 << SUPER_STATE_SHIFT)
127 #define SUPER_STATE_IRQ (0x3 << SUPER_STATE_SHIFT)
128 #define SUPER_STATE_FIQ (0x4 << SUPER_STATE_SHIFT)
129 #define SUPER_SOURCE_MASK 0xF
130 #define SUPER_FIQ_SOURCE_SHIFT 12
131 #define SUPER_IRQ_SOURCE_SHIFT 8
132 #define SUPER_RUN_SOURCE_SHIFT 4
133 #define SUPER_IDLE_SOURCE_SHIFT 0
135 #define SUPER_CLK_DIVIDER 0x04
137 #define BUS_CLK_DISABLE (1<<3)
138 #define BUS_CLK_DIV_MASK 0x3
141 #define PMC_CTRL_BLINK_ENB (1 << 7)
143 #define PMC_DPD_PADS_ORIDE 0x1c
144 #define PMC_DPD_PADS_ORIDE_BLINK_ENB (1 << 20)
146 #define PMC_BLINK_TIMER_DATA_ON_SHIFT 0
147 #define PMC_BLINK_TIMER_DATA_ON_MASK 0x7fff
148 #define PMC_BLINK_TIMER_ENB (1 << 15)
149 #define PMC_BLINK_TIMER_DATA_OFF_SHIFT 16
150 #define PMC_BLINK_TIMER_DATA_OFF_MASK 0xffff
152 static void __iomem *reg_clk_base = IO_ADDRESS(TEGRA_CLK_RESET_BASE);
153 static void __iomem *reg_pmc_base = IO_ADDRESS(TEGRA_PMC_BASE);
156 * Some clocks share a register with other clocks. Any clock op that
157 * non-atomically modifies a register used by another clock must lock
158 * clock_register_lock first.
160 static DEFINE_SPINLOCK(clock_register_lock);
163 * Some peripheral clocks share an enable bit, so refcount the enable bits
164 * in registers CLK_ENABLE_L, CLK_ENABLE_H, and CLK_ENABLE_U
166 static int tegra_periph_clk_enable_refcount[3 * 32];
168 #define clk_writel(value, reg) \
169 __raw_writel(value, (u32)reg_clk_base + (reg))
170 #define clk_readl(reg) \
171 __raw_readl((u32)reg_clk_base + (reg))
172 #define pmc_writel(value, reg) \
173 __raw_writel(value, (u32)reg_pmc_base + (reg))
174 #define pmc_readl(reg) \
175 __raw_readl((u32)reg_pmc_base + (reg))
177 unsigned long clk_measure_input_freq(void)
179 u32 clock_autodetect;
180 clk_writel(OSC_FREQ_DET_TRIG | 1, OSC_FREQ_DET);
181 do {} while (clk_readl(OSC_FREQ_DET_STATUS) & OSC_FREQ_DET_BUSY);
182 clock_autodetect = clk_readl(OSC_FREQ_DET_STATUS);
183 if (clock_autodetect >= 732 - 3 && clock_autodetect <= 732 + 3) {
185 } else if (clock_autodetect >= 794 - 3 && clock_autodetect <= 794 + 3) {
187 } else if (clock_autodetect >= 1172 - 3 && clock_autodetect <= 1172 + 3) {
189 } else if (clock_autodetect >= 1587 - 3 && clock_autodetect <= 1587 + 3) {
192 pr_err("%s: Unexpected clock autodetect value %d", __func__, clock_autodetect);
198 static int clk_div71_get_divider(unsigned long parent_rate, unsigned long rate)
200 s64 divider_u71 = parent_rate * 2;
201 divider_u71 += rate - 1;
202 do_div(divider_u71, rate);
204 if (divider_u71 - 2 < 0)
207 if (divider_u71 - 2 > 255)
210 return divider_u71 - 2;
213 static int clk_div16_get_divider(unsigned long parent_rate, unsigned long rate)
217 divider_u16 = parent_rate;
218 divider_u16 += rate - 1;
219 do_div(divider_u16, rate);
221 if (divider_u16 - 1 < 0)
224 if (divider_u16 - 1 > 255)
227 return divider_u16 - 1;
230 /* clk_m functions */
231 static unsigned long tegra2_clk_m_autodetect_rate(struct clk *c)
233 u32 auto_clock_control = clk_readl(OSC_CTRL) & ~OSC_CTRL_OSC_FREQ_MASK;
235 c->rate = clk_measure_input_freq();
238 auto_clock_control |= OSC_CTRL_OSC_FREQ_12MHZ;
241 auto_clock_control |= OSC_CTRL_OSC_FREQ_13MHZ;
244 auto_clock_control |= OSC_CTRL_OSC_FREQ_19_2MHZ;
247 auto_clock_control |= OSC_CTRL_OSC_FREQ_26MHZ;
250 pr_err("%s: Unexpected clock rate %ld", __func__, c->rate);
253 clk_writel(auto_clock_control, OSC_CTRL);
257 static void tegra2_clk_m_init(struct clk *c)
259 pr_debug("%s on clock %s\n", __func__, c->name);
260 tegra2_clk_m_autodetect_rate(c);
263 static int tegra2_clk_m_enable(struct clk *c)
265 pr_debug("%s on clock %s\n", __func__, c->name);
269 static void tegra2_clk_m_disable(struct clk *c)
271 pr_debug("%s on clock %s\n", __func__, c->name);
275 static struct clk_ops tegra_clk_m_ops = {
276 .init = tegra2_clk_m_init,
277 .enable = tegra2_clk_m_enable,
278 .disable = tegra2_clk_m_disable,
281 void tegra2_periph_reset_assert(struct clk *c)
283 BUG_ON(!c->ops->reset);
284 c->ops->reset(c, true);
287 void tegra2_periph_reset_deassert(struct clk *c)
289 BUG_ON(!c->ops->reset);
290 c->ops->reset(c, false);
293 /* super clock functions */
294 /* "super clocks" on tegra have two-stage muxes and a clock skipping
295 * super divider. We will ignore the clock skipping divider, since we
296 * can't lower the voltage when using the clock skip, but we can if we
297 * lower the PLL frequency.
299 static void tegra2_super_clk_init(struct clk *c)
304 const struct clk_mux_sel *sel;
305 val = clk_readl(c->reg + SUPER_CLK_MUX);
307 BUG_ON(((val & SUPER_STATE_MASK) != SUPER_STATE_RUN) &&
308 ((val & SUPER_STATE_MASK) != SUPER_STATE_IDLE));
309 shift = ((val & SUPER_STATE_MASK) == SUPER_STATE_IDLE) ?
310 SUPER_IDLE_SOURCE_SHIFT : SUPER_RUN_SOURCE_SHIFT;
311 source = (val >> shift) & SUPER_SOURCE_MASK;
312 for (sel = c->inputs; sel->input != NULL; sel++) {
313 if (sel->value == source)
316 BUG_ON(sel->input == NULL);
317 c->parent = sel->input;
320 static int tegra2_super_clk_enable(struct clk *c)
322 clk_writel(0, c->reg + SUPER_CLK_DIVIDER);
326 static void tegra2_super_clk_disable(struct clk *c)
328 pr_debug("%s on clock %s\n", __func__, c->name);
330 /* oops - don't disable the CPU clock! */
334 static int tegra2_super_clk_set_parent(struct clk *c, struct clk *p)
337 const struct clk_mux_sel *sel;
340 val = clk_readl(c->reg + SUPER_CLK_MUX);
341 BUG_ON(((val & SUPER_STATE_MASK) != SUPER_STATE_RUN) &&
342 ((val & SUPER_STATE_MASK) != SUPER_STATE_IDLE));
343 shift = ((val & SUPER_STATE_MASK) == SUPER_STATE_IDLE) ?
344 SUPER_IDLE_SOURCE_SHIFT : SUPER_RUN_SOURCE_SHIFT;
345 for (sel = c->inputs; sel->input != NULL; sel++) {
346 if (sel->input == p) {
347 val &= ~(SUPER_SOURCE_MASK << shift);
348 val |= sel->value << shift;
353 clk_writel(val, c->reg);
355 if (c->refcnt && c->parent)
356 clk_disable(c->parent);
366 * Super clocks have "clock skippers" instead of dividers. Dividing using
367 * a clock skipper does not allow the voltage to be scaled down, so instead
368 * adjust the rate of the parent clock. This requires that the parent of a
369 * super clock have no other children, otherwise the rate will change
370 * underneath the other children.
372 static int tegra2_super_clk_set_rate(struct clk *c, unsigned long rate)
374 return clk_set_rate(c->parent, rate);
377 static struct clk_ops tegra_super_ops = {
378 .init = tegra2_super_clk_init,
379 .enable = tegra2_super_clk_enable,
380 .disable = tegra2_super_clk_disable,
381 .set_parent = tegra2_super_clk_set_parent,
382 .set_rate = tegra2_super_clk_set_rate,
385 /* virtual cpu clock functions */
386 /* some clocks can not be stopped (cpu, memory bus) while the SoC is running.
387 To change the frequency of these clocks, the parent pll may need to be
388 reprogrammed, so the clock must be moved off the pll, the pll reprogrammed,
389 and then the clock moved back to the pll. To hide this sequence, a virtual
392 static void tegra2_cpu_clk_init(struct clk *c)
396 static int tegra2_cpu_clk_enable(struct clk *c)
401 static void tegra2_cpu_clk_disable(struct clk *c)
403 pr_debug("%s on clock %s\n", __func__, c->name);
405 /* oops - don't disable the CPU clock! */
409 static int tegra2_cpu_clk_set_rate(struct clk *c, unsigned long rate)
413 * Take an extra reference to the main pll so it doesn't turn
414 * off when we move the cpu off of it
416 clk_enable(c->u.cpu.main);
418 ret = clk_set_parent(c->parent, c->u.cpu.backup);
420 pr_err("Failed to switch cpu to clock %s\n", c->u.cpu.backup->name);
424 if (rate == clk_get_rate(c->u.cpu.backup))
427 ret = clk_set_rate(c->u.cpu.main, rate);
429 pr_err("Failed to change cpu pll to %lu\n", rate);
433 ret = clk_set_parent(c->parent, c->u.cpu.main);
435 pr_err("Failed to switch cpu to clock %s\n", c->u.cpu.main->name);
440 clk_disable(c->u.cpu.main);
444 static struct clk_ops tegra_cpu_ops = {
445 .init = tegra2_cpu_clk_init,
446 .enable = tegra2_cpu_clk_enable,
447 .disable = tegra2_cpu_clk_disable,
448 .set_rate = tegra2_cpu_clk_set_rate,
451 /* virtual cop clock functions. Used to acquire the fake 'cop' clock to
452 * reset the COP block (i.e. AVP) */
453 static void tegra2_cop_clk_reset(struct clk *c, bool assert)
455 unsigned long reg = assert ? RST_DEVICES_SET : RST_DEVICES_CLR;
457 pr_debug("%s %s\n", __func__, assert ? "assert" : "deassert");
458 clk_writel(1 << 1, reg);
461 static struct clk_ops tegra_cop_ops = {
462 .reset = tegra2_cop_clk_reset,
465 /* bus clock functions */
466 static void tegra2_bus_clk_init(struct clk *c)
468 u32 val = clk_readl(c->reg);
469 c->state = ((val >> c->reg_shift) & BUS_CLK_DISABLE) ? OFF : ON;
470 c->div = ((val >> c->reg_shift) & BUS_CLK_DIV_MASK) + 1;
474 static int tegra2_bus_clk_enable(struct clk *c)
479 spin_lock_irqsave(&clock_register_lock, flags);
481 val = clk_readl(c->reg);
482 val &= ~(BUS_CLK_DISABLE << c->reg_shift);
483 clk_writel(val, c->reg);
485 spin_unlock_irqrestore(&clock_register_lock, flags);
490 static void tegra2_bus_clk_disable(struct clk *c)
495 spin_lock_irqsave(&clock_register_lock, flags);
497 val = clk_readl(c->reg);
498 val |= BUS_CLK_DISABLE << c->reg_shift;
499 clk_writel(val, c->reg);
501 spin_unlock_irqrestore(&clock_register_lock, flags);
504 static int tegra2_bus_clk_set_rate(struct clk *c, unsigned long rate)
507 unsigned long parent_rate = clk_get_rate(c->parent);
512 spin_lock_irqsave(&clock_register_lock, flags);
514 val = clk_readl(c->reg);
515 for (i = 1; i <= 4; i++) {
516 if (rate == parent_rate / i) {
517 val &= ~(BUS_CLK_DIV_MASK << c->reg_shift);
518 val |= (i - 1) << c->reg_shift;
519 clk_writel(val, c->reg);
527 spin_unlock_irqrestore(&clock_register_lock, flags);
532 static struct clk_ops tegra_bus_ops = {
533 .init = tegra2_bus_clk_init,
534 .enable = tegra2_bus_clk_enable,
535 .disable = tegra2_bus_clk_disable,
536 .set_rate = tegra2_bus_clk_set_rate,
539 /* Blink output functions */
541 static void tegra2_blink_clk_init(struct clk *c)
545 val = pmc_readl(PMC_CTRL);
546 c->state = (val & PMC_CTRL_BLINK_ENB) ? ON : OFF;
548 val = pmc_readl(c->reg);
550 if (val & PMC_BLINK_TIMER_ENB) {
553 on_off = (val >> PMC_BLINK_TIMER_DATA_ON_SHIFT) &
554 PMC_BLINK_TIMER_DATA_ON_MASK;
555 val >>= PMC_BLINK_TIMER_DATA_OFF_SHIFT;
556 val &= PMC_BLINK_TIMER_DATA_OFF_MASK;
558 /* each tick in the blink timer is 4 32KHz clocks */
565 static int tegra2_blink_clk_enable(struct clk *c)
569 val = pmc_readl(PMC_DPD_PADS_ORIDE);
570 pmc_writel(val | PMC_DPD_PADS_ORIDE_BLINK_ENB, PMC_DPD_PADS_ORIDE);
572 val = pmc_readl(PMC_CTRL);
573 pmc_writel(val | PMC_CTRL_BLINK_ENB, PMC_CTRL);
578 static void tegra2_blink_clk_disable(struct clk *c)
582 val = pmc_readl(PMC_CTRL);
583 pmc_writel(val & ~PMC_CTRL_BLINK_ENB, PMC_CTRL);
585 val = pmc_readl(PMC_DPD_PADS_ORIDE);
586 pmc_writel(val & ~PMC_DPD_PADS_ORIDE_BLINK_ENB, PMC_DPD_PADS_ORIDE);
589 static int tegra2_blink_clk_set_rate(struct clk *c, unsigned long rate)
591 unsigned long parent_rate = clk_get_rate(c->parent);
592 if (rate >= parent_rate) {
594 pmc_writel(0, c->reg);
599 on_off = DIV_ROUND_UP(parent_rate / 8, rate);
602 val = (on_off & PMC_BLINK_TIMER_DATA_ON_MASK) <<
603 PMC_BLINK_TIMER_DATA_ON_SHIFT;
604 on_off &= PMC_BLINK_TIMER_DATA_OFF_MASK;
605 on_off <<= PMC_BLINK_TIMER_DATA_OFF_SHIFT;
607 val |= PMC_BLINK_TIMER_ENB;
608 pmc_writel(val, c->reg);
614 static struct clk_ops tegra_blink_clk_ops = {
615 .init = &tegra2_blink_clk_init,
616 .enable = &tegra2_blink_clk_enable,
617 .disable = &tegra2_blink_clk_disable,
618 .set_rate = &tegra2_blink_clk_set_rate,
622 static int tegra2_pll_clk_wait_for_lock(struct clk *c)
624 udelay(c->u.pll.lock_delay);
629 static void tegra2_pll_clk_init(struct clk *c)
631 u32 val = clk_readl(c->reg + PLL_BASE);
633 c->state = (val & PLL_BASE_ENABLE) ? ON : OFF;
635 if (c->flags & PLL_FIXED && !(val & PLL_BASE_OVERRIDE)) {
636 pr_warning("Clock %s has unknown fixed frequency\n", c->name);
639 } else if (val & PLL_BASE_BYPASS) {
643 c->mul = (val & PLL_BASE_DIVN_MASK) >> PLL_BASE_DIVN_SHIFT;
644 c->div = (val & PLL_BASE_DIVM_MASK) >> PLL_BASE_DIVM_SHIFT;
646 c->div *= (val & PLLU_BASE_POST_DIV) ? 1 : 2;
648 c->div *= (val & PLL_BASE_DIVP_MASK) ? 2 : 1;
652 static int tegra2_pll_clk_enable(struct clk *c)
655 pr_debug("%s on clock %s\n", __func__, c->name);
657 val = clk_readl(c->reg + PLL_BASE);
658 val &= ~PLL_BASE_BYPASS;
659 val |= PLL_BASE_ENABLE;
660 clk_writel(val, c->reg + PLL_BASE);
662 tegra2_pll_clk_wait_for_lock(c);
667 static void tegra2_pll_clk_disable(struct clk *c)
670 pr_debug("%s on clock %s\n", __func__, c->name);
672 val = clk_readl(c->reg);
673 val &= ~(PLL_BASE_BYPASS | PLL_BASE_ENABLE);
674 clk_writel(val, c->reg);
677 static int tegra2_pll_clk_set_rate(struct clk *c, unsigned long rate)
680 unsigned long input_rate;
681 const struct clk_pll_freq_table *sel;
683 pr_debug("%s: %s %lu\n", __func__, c->name, rate);
685 input_rate = clk_get_rate(c->parent);
686 for (sel = c->u.pll.freq_table; sel->input_rate != 0; sel++) {
687 if (sel->input_rate == input_rate && sel->output_rate == rate) {
689 c->div = sel->m * sel->p;
691 val = clk_readl(c->reg + PLL_BASE);
692 if (c->flags & PLL_FIXED)
693 val |= PLL_BASE_OVERRIDE;
694 val &= ~(PLL_BASE_DIVP_MASK | PLL_BASE_DIVN_MASK |
696 val |= (sel->m << PLL_BASE_DIVM_SHIFT) |
697 (sel->n << PLL_BASE_DIVN_SHIFT);
698 BUG_ON(sel->p < 1 || sel->p > 2);
699 if (c->flags & PLLU) {
701 val |= PLLU_BASE_POST_DIV;
704 val |= 1 << PLL_BASE_DIVP_SHIFT;
706 clk_writel(val, c->reg + PLL_BASE);
708 if (c->flags & PLL_HAS_CPCON) {
709 val = clk_readl(c->reg + PLL_MISC(c));
710 val &= ~PLL_MISC_CPCON_MASK;
711 val |= sel->cpcon << PLL_MISC_CPCON_SHIFT;
712 clk_writel(val, c->reg + PLL_MISC(c));
716 tegra2_pll_clk_enable(c);
724 static struct clk_ops tegra_pll_ops = {
725 .init = tegra2_pll_clk_init,
726 .enable = tegra2_pll_clk_enable,
727 .disable = tegra2_pll_clk_disable,
728 .set_rate = tegra2_pll_clk_set_rate,
731 static void tegra2_pllx_clk_init(struct clk *c)
733 tegra2_pll_clk_init(c);
735 if (tegra_sku_id() == 7)
736 c->max_rate = 750000000;
739 static struct clk_ops tegra_pllx_ops = {
740 .init = tegra2_pllx_clk_init,
741 .enable = tegra2_pll_clk_enable,
742 .disable = tegra2_pll_clk_disable,
743 .set_rate = tegra2_pll_clk_set_rate,
746 static int tegra2_plle_clk_enable(struct clk *c)
750 pr_debug("%s on clock %s\n", __func__, c->name);
754 val = clk_readl(c->reg + PLL_BASE);
755 if (!(val & PLLE_MISC_READY))
758 val = clk_readl(c->reg + PLL_BASE);
759 val |= PLL_BASE_ENABLE | PLL_BASE_BYPASS;
760 clk_writel(val, c->reg + PLL_BASE);
765 static struct clk_ops tegra_plle_ops = {
766 .init = tegra2_pll_clk_init,
767 .enable = tegra2_plle_clk_enable,
768 .set_rate = tegra2_pll_clk_set_rate,
771 /* Clock divider ops */
772 static void tegra2_pll_div_clk_init(struct clk *c)
774 u32 val = clk_readl(c->reg);
776 val >>= c->reg_shift;
777 c->state = (val & PLL_OUT_CLKEN) ? ON : OFF;
778 if (!(val & PLL_OUT_RESET_DISABLE))
781 if (c->flags & DIV_U71) {
782 divu71 = (val & PLL_OUT_RATIO_MASK) >> PLL_OUT_RATIO_SHIFT;
783 c->div = (divu71 + 2);
785 } else if (c->flags & DIV_2) {
794 static int tegra2_pll_div_clk_enable(struct clk *c)
800 pr_debug("%s: %s\n", __func__, c->name);
801 if (c->flags & DIV_U71) {
802 spin_lock_irqsave(&clock_register_lock, flags);
803 val = clk_readl(c->reg);
804 new_val = val >> c->reg_shift;
807 new_val |= PLL_OUT_CLKEN | PLL_OUT_RESET_DISABLE;
809 val &= ~(0xFFFF << c->reg_shift);
810 val |= new_val << c->reg_shift;
811 clk_writel(val, c->reg);
812 spin_unlock_irqrestore(&clock_register_lock, flags);
814 } else if (c->flags & DIV_2) {
815 BUG_ON(!(c->flags & PLLD));
816 spin_lock_irqsave(&clock_register_lock, flags);
817 val = clk_readl(c->reg);
818 val &= ~PLLD_MISC_DIV_RST;
819 clk_writel(val, c->reg);
820 spin_unlock_irqrestore(&clock_register_lock, flags);
826 static void tegra2_pll_div_clk_disable(struct clk *c)
832 pr_debug("%s: %s\n", __func__, c->name);
833 if (c->flags & DIV_U71) {
834 spin_lock_irqsave(&clock_register_lock, flags);
835 val = clk_readl(c->reg);
836 new_val = val >> c->reg_shift;
839 new_val &= ~(PLL_OUT_CLKEN | PLL_OUT_RESET_DISABLE);
841 val &= ~(0xFFFF << c->reg_shift);
842 val |= new_val << c->reg_shift;
843 clk_writel(val, c->reg);
844 spin_unlock_irqrestore(&clock_register_lock, flags);
845 } else if (c->flags & DIV_2) {
846 BUG_ON(!(c->flags & PLLD));
847 spin_lock_irqsave(&clock_register_lock, flags);
848 val = clk_readl(c->reg);
849 val |= PLLD_MISC_DIV_RST;
850 clk_writel(val, c->reg);
851 spin_unlock_irqrestore(&clock_register_lock, flags);
855 static int tegra2_pll_div_clk_set_rate(struct clk *c, unsigned long rate)
860 unsigned long parent_rate = clk_get_rate(c->parent);
863 pr_debug("%s: %s %lu\n", __func__, c->name, rate);
864 if (c->flags & DIV_U71) {
865 divider_u71 = clk_div71_get_divider(parent_rate, rate);
866 if (divider_u71 >= 0) {
867 spin_lock_irqsave(&clock_register_lock, flags);
868 val = clk_readl(c->reg);
869 new_val = val >> c->reg_shift;
871 if (c->flags & DIV_U71_FIXED)
872 new_val |= PLL_OUT_OVERRIDE;
873 new_val &= ~PLL_OUT_RATIO_MASK;
874 new_val |= divider_u71 << PLL_OUT_RATIO_SHIFT;
876 val &= ~(0xFFFF << c->reg_shift);
877 val |= new_val << c->reg_shift;
878 clk_writel(val, c->reg);
879 c->div = divider_u71 + 2;
881 spin_unlock_irqrestore(&clock_register_lock, flags);
884 } else if (c->flags & DIV_2) {
885 if (parent_rate == rate * 2)
891 static long tegra2_pll_div_clk_round_rate(struct clk *c, unsigned long rate)
894 unsigned long parent_rate = clk_get_rate(c->parent);
895 pr_debug("%s: %s %lu\n", __func__, c->name, rate);
897 if (c->flags & DIV_U71) {
898 divider = clk_div71_get_divider(parent_rate, rate);
901 return DIV_ROUND_UP(parent_rate * 2, divider + 2);
902 } else if (c->flags & DIV_2) {
903 return DIV_ROUND_UP(parent_rate, 2);
908 static struct clk_ops tegra_pll_div_ops = {
909 .init = tegra2_pll_div_clk_init,
910 .enable = tegra2_pll_div_clk_enable,
911 .disable = tegra2_pll_div_clk_disable,
912 .set_rate = tegra2_pll_div_clk_set_rate,
913 .round_rate = tegra2_pll_div_clk_round_rate,
918 static void tegra2_periph_clk_init(struct clk *c)
920 u32 val = clk_readl(c->reg);
921 const struct clk_mux_sel *mux = 0;
922 const struct clk_mux_sel *sel;
923 if (c->flags & MUX) {
924 for (sel = c->inputs; sel->input != NULL; sel++) {
925 if (val >> PERIPH_CLK_SOURCE_SHIFT == sel->value)
930 c->parent = mux->input;
932 c->parent = c->inputs[0].input;
935 if (c->flags & DIV_U71) {
936 u32 divu71 = val & PERIPH_CLK_SOURCE_DIVU71_MASK;
939 } else if (c->flags & DIV_U16) {
940 u32 divu16 = val & PERIPH_CLK_SOURCE_DIVU16_MASK;
950 if (!c->u.periph.clk_num)
953 if (!(clk_readl(CLK_OUT_ENB + PERIPH_CLK_TO_ENB_REG(c)) &
954 PERIPH_CLK_TO_ENB_BIT(c)))
957 if (!(c->flags & PERIPH_NO_RESET))
958 if (clk_readl(RST_DEVICES + PERIPH_CLK_TO_ENB_REG(c)) &
959 PERIPH_CLK_TO_ENB_BIT(c))
963 static int tegra2_periph_clk_enable(struct clk *c)
968 pr_debug("%s on clock %s\n", __func__, c->name);
970 if (!c->u.periph.clk_num)
973 spin_lock_irqsave(&clock_register_lock, flags);
975 refcount = tegra_periph_clk_enable_refcount[c->u.periph.clk_num]++;
980 clk_writel(PERIPH_CLK_TO_ENB_BIT(c),
981 CLK_OUT_ENB_SET + PERIPH_CLK_TO_ENB_SET_REG(c));
982 if (!(c->flags & PERIPH_NO_RESET) && !(c->flags & PERIPH_MANUAL_RESET))
983 clk_writel(PERIPH_CLK_TO_ENB_BIT(c),
984 RST_DEVICES_CLR + PERIPH_CLK_TO_ENB_SET_REG(c));
985 if (c->flags & PERIPH_EMC_ENB) {
986 /* The EMC peripheral clock has 2 extra enable bits */
987 /* FIXME: Do they need to be disabled? */
988 val = clk_readl(c->reg);
990 clk_writel(val, c->reg);
994 spin_unlock_irqrestore(&clock_register_lock, flags);
999 static void tegra2_periph_clk_disable(struct clk *c)
1001 unsigned long flags;
1003 pr_debug("%s on clock %s\n", __func__, c->name);
1005 if (!c->u.periph.clk_num)
1008 spin_lock_irqsave(&clock_register_lock, flags);
1011 tegra_periph_clk_enable_refcount[c->u.periph.clk_num]--;
1013 if (tegra_periph_clk_enable_refcount[c->u.periph.clk_num] == 0)
1014 clk_writel(PERIPH_CLK_TO_ENB_BIT(c),
1015 CLK_OUT_ENB_CLR + PERIPH_CLK_TO_ENB_SET_REG(c));
1017 spin_unlock_irqrestore(&clock_register_lock, flags);
1020 static void tegra2_periph_clk_reset(struct clk *c, bool assert)
1022 unsigned long base = assert ? RST_DEVICES_SET : RST_DEVICES_CLR;
1024 pr_debug("%s %s on clock %s\n", __func__,
1025 assert ? "assert" : "deassert", c->name);
1027 BUG_ON(!c->u.periph.clk_num);
1029 if (!(c->flags & PERIPH_NO_RESET))
1030 clk_writel(PERIPH_CLK_TO_ENB_BIT(c),
1031 base + PERIPH_CLK_TO_ENB_SET_REG(c));
1034 static int tegra2_periph_clk_set_parent(struct clk *c, struct clk *p)
1037 const struct clk_mux_sel *sel;
1038 pr_debug("%s: %s %s\n", __func__, c->name, p->name);
1039 for (sel = c->inputs; sel->input != NULL; sel++) {
1040 if (sel->input == p) {
1041 val = clk_readl(c->reg);
1042 val &= ~PERIPH_CLK_SOURCE_MASK;
1043 val |= (sel->value) << PERIPH_CLK_SOURCE_SHIFT;
1048 clk_writel(val, c->reg);
1050 if (c->refcnt && c->parent)
1051 clk_disable(c->parent);
1061 static int tegra2_periph_clk_set_rate(struct clk *c, unsigned long rate)
1065 unsigned long parent_rate = clk_get_rate(c->parent);
1067 if (c->flags & DIV_U71) {
1068 divider = clk_div71_get_divider(parent_rate, rate);
1070 val = clk_readl(c->reg);
1071 val &= ~PERIPH_CLK_SOURCE_DIVU71_MASK;
1073 clk_writel(val, c->reg);
1074 c->div = divider + 2;
1078 } else if (c->flags & DIV_U16) {
1079 divider = clk_div16_get_divider(parent_rate, rate);
1081 val = clk_readl(c->reg);
1082 val &= ~PERIPH_CLK_SOURCE_DIVU16_MASK;
1084 clk_writel(val, c->reg);
1085 c->div = divider + 1;
1089 } else if (parent_rate <= rate) {
1097 static long tegra2_periph_clk_round_rate(struct clk *c,
1101 unsigned long parent_rate = clk_get_rate(c->parent);
1102 pr_debug("%s: %s %lu\n", __func__, c->name, rate);
1104 if (c->flags & DIV_U71) {
1105 divider = clk_div71_get_divider(parent_rate, rate);
1109 return DIV_ROUND_UP(parent_rate * 2, divider + 2);
1110 } else if (c->flags & DIV_U16) {
1111 divider = clk_div16_get_divider(parent_rate, rate);
1114 return DIV_ROUND_UP(parent_rate, divider + 1);
1119 static struct clk_ops tegra_periph_clk_ops = {
1120 .init = &tegra2_periph_clk_init,
1121 .enable = &tegra2_periph_clk_enable,
1122 .disable = &tegra2_periph_clk_disable,
1123 .set_parent = &tegra2_periph_clk_set_parent,
1124 .set_rate = &tegra2_periph_clk_set_rate,
1125 .round_rate = &tegra2_periph_clk_round_rate,
1126 .reset = &tegra2_periph_clk_reset,
1129 /* The SDMMC controllers have extra bits in the clock source register that
1130 * adjust the delay between the clock and data to compenstate for delays
1132 void tegra2_sdmmc_tap_delay(struct clk *c, int delay)
1136 delay = clamp(delay, 0, 15);
1137 reg = clk_readl(c->reg);
1138 reg &= ~SDMMC_CLK_INT_FB_DLY_MASK;
1139 reg |= SDMMC_CLK_INT_FB_SEL;
1140 reg |= delay << SDMMC_CLK_INT_FB_DLY_SHIFT;
1141 clk_writel(reg, c->reg);
1144 /* External memory controller clock ops */
1145 static void tegra2_emc_clk_init(struct clk *c)
1147 tegra2_periph_clk_init(c);
1148 c->max_rate = clk_get_rate_locked(c);
1151 static long tegra2_emc_clk_round_rate(struct clk *c, unsigned long rate)
1153 long new_rate = rate;
1155 new_rate = tegra_emc_round_rate(new_rate);
1159 BUG_ON(new_rate != tegra2_periph_clk_round_rate(c, new_rate));
1164 static int tegra2_emc_clk_set_rate(struct clk *c, unsigned long rate)
1168 * The Tegra2 memory controller has an interlock with the clock
1169 * block that allows memory shadowed registers to be updated,
1170 * and then transfer them to the main registers at the same
1171 * time as the clock update without glitches.
1173 ret = tegra_emc_set_rate(rate);
1177 ret = tegra2_periph_clk_set_rate(c, rate);
1183 static struct clk_ops tegra_emc_clk_ops = {
1184 .init = &tegra2_emc_clk_init,
1185 .enable = &tegra2_periph_clk_enable,
1186 .disable = &tegra2_periph_clk_disable,
1187 .set_parent = &tegra2_periph_clk_set_parent,
1188 .set_rate = &tegra2_emc_clk_set_rate,
1189 .round_rate = &tegra2_emc_clk_round_rate,
1190 .reset = &tegra2_periph_clk_reset,
1193 /* Clock doubler ops */
1194 static void tegra2_clk_double_init(struct clk *c)
1200 if (!c->u.periph.clk_num)
1203 if (!(clk_readl(CLK_OUT_ENB + PERIPH_CLK_TO_ENB_REG(c)) &
1204 PERIPH_CLK_TO_ENB_BIT(c)))
1208 static int tegra2_clk_double_set_rate(struct clk *c, unsigned long rate)
1210 if (rate != 2 * clk_get_rate(c->parent))
1217 static struct clk_ops tegra_clk_double_ops = {
1218 .init = &tegra2_clk_double_init,
1219 .enable = &tegra2_periph_clk_enable,
1220 .disable = &tegra2_periph_clk_disable,
1221 .set_rate = &tegra2_clk_double_set_rate,
1224 /* Audio sync clock ops */
1225 static void tegra2_audio_sync_clk_init(struct clk *c)
1228 const struct clk_mux_sel *sel;
1229 u32 val = clk_readl(c->reg);
1230 c->state = (val & (1<<4)) ? OFF : ON;
1232 for (sel = c->inputs; sel->input != NULL; sel++)
1233 if (sel->value == source)
1235 BUG_ON(sel->input == NULL);
1236 c->parent = sel->input;
1239 static int tegra2_audio_sync_clk_enable(struct clk *c)
1241 clk_writel(0, c->reg);
1245 static void tegra2_audio_sync_clk_disable(struct clk *c)
1247 clk_writel(1, c->reg);
1250 static int tegra2_audio_sync_clk_set_parent(struct clk *c, struct clk *p)
1253 const struct clk_mux_sel *sel;
1254 for (sel = c->inputs; sel->input != NULL; sel++) {
1255 if (sel->input == p) {
1256 val = clk_readl(c->reg);
1263 clk_writel(val, c->reg);
1265 if (c->refcnt && c->parent)
1266 clk_disable(c->parent);
1276 static struct clk_ops tegra_audio_sync_clk_ops = {
1277 .init = tegra2_audio_sync_clk_init,
1278 .enable = tegra2_audio_sync_clk_enable,
1279 .disable = tegra2_audio_sync_clk_disable,
1280 .set_parent = tegra2_audio_sync_clk_set_parent,
1283 /* cdev1 and cdev2 (dap_mclk1 and dap_mclk2) ops */
1285 static void tegra2_cdev_clk_init(struct clk *c)
1287 /* We could un-tristate the cdev1 or cdev2 pingroup here; this is
1288 * currently done in the pinmux code. */
1291 BUG_ON(!c->u.periph.clk_num);
1293 if (!(clk_readl(CLK_OUT_ENB + PERIPH_CLK_TO_ENB_REG(c)) &
1294 PERIPH_CLK_TO_ENB_BIT(c)))
1298 static int tegra2_cdev_clk_enable(struct clk *c)
1300 BUG_ON(!c->u.periph.clk_num);
1302 clk_writel(PERIPH_CLK_TO_ENB_BIT(c),
1303 CLK_OUT_ENB_SET + PERIPH_CLK_TO_ENB_SET_REG(c));
1307 static void tegra2_cdev_clk_disable(struct clk *c)
1309 BUG_ON(!c->u.periph.clk_num);
1311 clk_writel(PERIPH_CLK_TO_ENB_BIT(c),
1312 CLK_OUT_ENB_CLR + PERIPH_CLK_TO_ENB_SET_REG(c));
1315 static struct clk_ops tegra_cdev_clk_ops = {
1316 .init = &tegra2_cdev_clk_init,
1317 .enable = &tegra2_cdev_clk_enable,
1318 .disable = &tegra2_cdev_clk_disable,
1321 /* shared bus ops */
1323 * Some clocks may have multiple downstream users that need to request a
1324 * higher clock rate. Shared bus clocks provide a unique shared_bus_user
1325 * clock to each user. The frequency of the bus is set to the highest
1326 * enabled shared_bus_user clock, with a minimum value set by the
1329 static int tegra_clk_shared_bus_update(struct clk *bus)
1332 unsigned long rate = bus->min_rate;
1334 list_for_each_entry(c, &bus->shared_bus_list, u.shared_bus_user.node)
1335 if (c->u.shared_bus_user.enabled)
1336 rate = max(c->u.shared_bus_user.rate, rate);
1338 if (rate == clk_get_rate_locked(bus))
1341 return clk_set_rate_locked(bus, rate);
1344 static void tegra_clk_shared_bus_init(struct clk *c)
1346 unsigned long flags;
1348 c->max_rate = c->parent->max_rate;
1349 c->u.shared_bus_user.rate = c->parent->max_rate;
1353 spin_lock_irqsave(&c->parent->spinlock, flags);
1355 list_add_tail(&c->u.shared_bus_user.node,
1356 &c->parent->shared_bus_list);
1358 spin_unlock_irqrestore(&c->parent->spinlock, flags);
1361 static int tegra_clk_shared_bus_set_rate(struct clk *c, unsigned long rate)
1363 unsigned long flags;
1365 long new_rate = rate;
1367 new_rate = clk_round_rate(c->parent, new_rate);
1371 spin_lock_irqsave(&c->parent->spinlock, flags);
1373 c->u.shared_bus_user.rate = new_rate;
1374 ret = tegra_clk_shared_bus_update(c->parent);
1376 spin_unlock_irqrestore(&c->parent->spinlock, flags);
1381 static long tegra_clk_shared_bus_round_rate(struct clk *c, unsigned long rate)
1383 return clk_round_rate(c->parent, rate);
1386 static int tegra_clk_shared_bus_enable(struct clk *c)
1388 unsigned long flags;
1391 spin_lock_irqsave(&c->parent->spinlock, flags);
1393 c->u.shared_bus_user.enabled = true;
1394 ret = tegra_clk_shared_bus_update(c->parent);
1396 spin_unlock_irqrestore(&c->parent->spinlock, flags);
1401 static void tegra_clk_shared_bus_disable(struct clk *c)
1403 unsigned long flags;
1406 spin_lock_irqsave(&c->parent->spinlock, flags);
1408 c->u.shared_bus_user.enabled = false;
1409 ret = tegra_clk_shared_bus_update(c->parent);
1412 spin_unlock_irqrestore(&c->parent->spinlock, flags);
1415 static struct clk_ops tegra_clk_shared_bus_ops = {
1416 .init = tegra_clk_shared_bus_init,
1417 .enable = tegra_clk_shared_bus_enable,
1418 .disable = tegra_clk_shared_bus_disable,
1419 .set_rate = tegra_clk_shared_bus_set_rate,
1420 .round_rate = tegra_clk_shared_bus_round_rate,
1424 /* Clock definitions */
1425 static struct clk tegra_clk_32k = {
1432 static struct clk_pll_freq_table tegra_pll_s_freq_table[] = {
1433 {32768, 12000000, 366, 1, 1, 0},
1434 {32768, 13000000, 397, 1, 1, 0},
1435 {32768, 19200000, 586, 1, 1, 0},
1436 {32768, 26000000, 793, 1, 1, 0},
1440 static struct clk tegra_pll_s = {
1442 .flags = PLL_ALT_MISC_REG,
1443 .ops = &tegra_pll_ops,
1444 .parent = &tegra_clk_32k,
1445 .max_rate = 26000000,
1450 .cf_min = 0, /* FIXME */
1451 .cf_max = 0, /* FIXME */
1452 .vco_min = 12000000,
1453 .vco_max = 26000000,
1454 .freq_table = tegra_pll_s_freq_table,
1459 static struct clk_mux_sel tegra_clk_m_sel[] = {
1460 { .input = &tegra_clk_32k, .value = 0},
1461 { .input = &tegra_pll_s, .value = 1},
1465 static struct clk tegra_clk_m = {
1467 .flags = ENABLE_ON_INIT,
1468 .ops = &tegra_clk_m_ops,
1469 .inputs = tegra_clk_m_sel,
1472 .max_rate = 26000000,
1475 static struct clk_pll_freq_table tegra_pll_c_freq_table[] = {
1476 { 0, 0, 0, 0, 0, 0 },
1479 static struct clk tegra_pll_c = {
1481 .flags = PLL_HAS_CPCON,
1482 .ops = &tegra_pll_ops,
1484 .parent = &tegra_clk_m,
1485 .max_rate = 600000000,
1487 .input_min = 2000000,
1488 .input_max = 31000000,
1491 .vco_min = 20000000,
1492 .vco_max = 1400000000,
1493 .freq_table = tegra_pll_c_freq_table,
1498 static struct clk tegra_pll_c_out1 = {
1499 .name = "pll_c_out1",
1500 .ops = &tegra_pll_div_ops,
1502 .parent = &tegra_pll_c,
1505 .max_rate = 600000000,
1508 static struct clk_pll_freq_table tegra_pll_m_freq_table[] = {
1509 { 12000000, 666000000, 666, 12, 1, 8},
1510 { 13000000, 666000000, 666, 13, 1, 8},
1511 { 19200000, 666000000, 555, 16, 1, 8},
1512 { 26000000, 666000000, 666, 26, 1, 8},
1513 { 12000000, 600000000, 600, 12, 1, 8},
1514 { 13000000, 600000000, 600, 13, 1, 8},
1515 { 19200000, 600000000, 375, 12, 1, 6},
1516 { 26000000, 600000000, 600, 26, 1, 8},
1517 { 0, 0, 0, 0, 0, 0 },
1520 static struct clk tegra_pll_m = {
1522 .flags = PLL_HAS_CPCON,
1523 .ops = &tegra_pll_ops,
1525 .parent = &tegra_clk_m,
1526 .max_rate = 800000000,
1528 .input_min = 2000000,
1529 .input_max = 31000000,
1532 .vco_min = 20000000,
1533 .vco_max = 1200000000,
1534 .freq_table = tegra_pll_m_freq_table,
1539 static struct clk tegra_pll_m_out1 = {
1540 .name = "pll_m_out1",
1541 .ops = &tegra_pll_div_ops,
1543 .parent = &tegra_pll_m,
1546 .max_rate = 600000000,
1549 static struct clk_pll_freq_table tegra_pll_p_freq_table[] = {
1550 { 12000000, 216000000, 432, 12, 2, 8},
1551 { 13000000, 216000000, 432, 13, 2, 8},
1552 { 19200000, 216000000, 90, 4, 2, 1},
1553 { 26000000, 216000000, 432, 26, 2, 8},
1554 { 12000000, 432000000, 432, 12, 1, 8},
1555 { 13000000, 432000000, 432, 13, 1, 8},
1556 { 19200000, 432000000, 90, 4, 1, 1},
1557 { 26000000, 432000000, 432, 26, 1, 8},
1558 { 0, 0, 0, 0, 0, 0 },
1561 static struct clk tegra_pll_p = {
1563 .flags = ENABLE_ON_INIT | PLL_FIXED | PLL_HAS_CPCON,
1564 .ops = &tegra_pll_ops,
1566 .parent = &tegra_clk_m,
1567 .max_rate = 432000000,
1569 .input_min = 2000000,
1570 .input_max = 31000000,
1573 .vco_min = 20000000,
1574 .vco_max = 1400000000,
1575 .freq_table = tegra_pll_p_freq_table,
1580 static struct clk tegra_pll_p_out1 = {
1581 .name = "pll_p_out1",
1582 .ops = &tegra_pll_div_ops,
1583 .flags = ENABLE_ON_INIT | DIV_U71 | DIV_U71_FIXED,
1584 .parent = &tegra_pll_p,
1587 .max_rate = 432000000,
1590 static struct clk tegra_pll_p_out2 = {
1591 .name = "pll_p_out2",
1592 .ops = &tegra_pll_div_ops,
1593 .flags = ENABLE_ON_INIT | DIV_U71 | DIV_U71_FIXED,
1594 .parent = &tegra_pll_p,
1597 .max_rate = 432000000,
1600 static struct clk tegra_pll_p_out3 = {
1601 .name = "pll_p_out3",
1602 .ops = &tegra_pll_div_ops,
1603 .flags = ENABLE_ON_INIT | DIV_U71 | DIV_U71_FIXED,
1604 .parent = &tegra_pll_p,
1607 .max_rate = 432000000,
1610 static struct clk tegra_pll_p_out4 = {
1611 .name = "pll_p_out4",
1612 .ops = &tegra_pll_div_ops,
1613 .flags = ENABLE_ON_INIT | DIV_U71 | DIV_U71_FIXED,
1614 .parent = &tegra_pll_p,
1617 .max_rate = 432000000,
1620 static struct clk_pll_freq_table tegra_pll_a_freq_table[] = {
1621 { 28800000, 56448000, 49, 25, 1, 1},
1622 { 28800000, 73728000, 64, 25, 1, 1},
1623 { 28800000, 24000000, 5, 6, 1, 1},
1624 { 0, 0, 0, 0, 0, 0 },
1627 static struct clk tegra_pll_a = {
1629 .flags = PLL_HAS_CPCON,
1630 .ops = &tegra_pll_ops,
1632 .parent = &tegra_pll_p_out1,
1633 .max_rate = 73728000,
1635 .input_min = 2000000,
1636 .input_max = 31000000,
1639 .vco_min = 20000000,
1640 .vco_max = 1400000000,
1641 .freq_table = tegra_pll_a_freq_table,
1646 static struct clk tegra_pll_a_out0 = {
1647 .name = "pll_a_out0",
1648 .ops = &tegra_pll_div_ops,
1650 .parent = &tegra_pll_a,
1653 .max_rate = 73728000,
1656 static struct clk_pll_freq_table tegra_pll_d_freq_table[] = {
1657 { 12000000, 216000000, 216, 12, 1, 4},
1658 { 13000000, 216000000, 216, 13, 1, 4},
1659 { 19200000, 216000000, 135, 12, 1, 3},
1660 { 26000000, 216000000, 216, 26, 1, 4},
1662 { 12000000, 594000000, 594, 12, 1, 8},
1663 { 13000000, 594000000, 594, 13, 1, 8},
1664 { 19200000, 594000000, 495, 16, 1, 8},
1665 { 26000000, 594000000, 594, 26, 1, 8},
1667 { 12000000, 1000000000, 1000, 12, 1, 12},
1668 { 13000000, 1000000000, 1000, 13, 1, 12},
1669 { 19200000, 1000000000, 625, 12, 1, 8},
1670 { 26000000, 1000000000, 1000, 26, 1, 12},
1672 { 0, 0, 0, 0, 0, 0 },
1675 static struct clk tegra_pll_d = {
1677 .flags = PLL_HAS_CPCON | PLLD,
1678 .ops = &tegra_pll_ops,
1680 .parent = &tegra_clk_m,
1681 .max_rate = 1000000000,
1683 .input_min = 2000000,
1684 .input_max = 40000000,
1687 .vco_min = 40000000,
1688 .vco_max = 1000000000,
1689 .freq_table = tegra_pll_d_freq_table,
1694 static struct clk tegra_pll_d_out0 = {
1695 .name = "pll_d_out0",
1696 .ops = &tegra_pll_div_ops,
1697 .flags = DIV_2 | PLLD,
1698 .parent = &tegra_pll_d,
1699 .max_rate = 500000000,
1702 static struct clk_pll_freq_table tegra_pll_u_freq_table[] = {
1703 { 12000000, 480000000, 960, 12, 2, 0},
1704 { 13000000, 480000000, 960, 13, 2, 0},
1705 { 19200000, 480000000, 200, 4, 2, 0},
1706 { 26000000, 480000000, 960, 26, 2, 0},
1707 { 0, 0, 0, 0, 0, 0 },
1710 static struct clk tegra_pll_u = {
1713 .ops = &tegra_pll_ops,
1715 .parent = &tegra_clk_m,
1716 .max_rate = 480000000,
1718 .input_min = 2000000,
1719 .input_max = 40000000,
1722 .vco_min = 480000000,
1723 .vco_max = 960000000,
1724 .freq_table = tegra_pll_u_freq_table,
1729 static struct clk_pll_freq_table tegra_pll_x_freq_table[] = {
1731 { 12000000, 1000000000, 1000, 12, 1, 12},
1732 { 13000000, 1000000000, 1000, 13, 1, 12},
1733 { 19200000, 1000000000, 625, 12, 1, 8},
1734 { 26000000, 1000000000, 1000, 26, 1, 12},
1737 { 12000000, 912000000, 912, 12, 1, 12},
1738 { 13000000, 912000000, 912, 13, 1, 12},
1739 { 19200000, 912000000, 760, 16, 1, 8},
1740 { 26000000, 912000000, 912, 26, 1, 12},
1743 { 12000000, 816000000, 816, 12, 1, 12},
1744 { 13000000, 816000000, 816, 13, 1, 12},
1745 { 19200000, 816000000, 680, 16, 1, 8},
1746 { 26000000, 816000000, 816, 26, 1, 12},
1749 { 12000000, 760000000, 760, 12, 1, 12},
1750 { 13000000, 760000000, 760, 13, 1, 12},
1751 { 19200000, 760000000, 950, 24, 1, 8},
1752 { 26000000, 760000000, 760, 26, 1, 12},
1755 { 12000000, 608000000, 608, 12, 1, 12},
1756 { 13000000, 608000000, 608, 13, 1, 12},
1757 { 19200000, 608000000, 380, 12, 1, 8},
1758 { 26000000, 608000000, 608, 26, 1, 12},
1761 { 12000000, 456000000, 456, 12, 1, 12},
1762 { 13000000, 456000000, 456, 13, 1, 12},
1763 { 19200000, 456000000, 380, 16, 1, 8},
1764 { 26000000, 456000000, 456, 26, 1, 12},
1767 { 12000000, 312000000, 312, 12, 1, 12},
1768 { 13000000, 312000000, 312, 13, 1, 12},
1769 { 19200000, 312000000, 260, 16, 1, 8},
1770 { 26000000, 312000000, 312, 26, 1, 12},
1772 { 0, 0, 0, 0, 0, 0 },
1775 static struct clk tegra_pll_x = {
1777 .flags = PLL_HAS_CPCON | PLL_ALT_MISC_REG,
1778 .ops = &tegra_pllx_ops,
1780 .parent = &tegra_clk_m,
1781 .max_rate = 1000000000,
1783 .input_min = 2000000,
1784 .input_max = 31000000,
1787 .vco_min = 20000000,
1788 .vco_max = 1200000000,
1789 .freq_table = tegra_pll_x_freq_table,
1794 static struct clk_pll_freq_table tegra_pll_e_freq_table[] = {
1795 { 12000000, 100000000, 200, 24, 1, 0 },
1796 { 0, 0, 0, 0, 0, 0 },
1799 static struct clk tegra_pll_e = {
1801 .flags = PLL_ALT_MISC_REG,
1802 .ops = &tegra_plle_ops,
1803 .parent = &tegra_clk_m,
1805 .max_rate = 100000000,
1807 .input_min = 12000000,
1808 .input_max = 12000000,
1809 .freq_table = tegra_pll_e_freq_table,
1813 static struct clk tegra_clk_d = {
1815 .flags = PERIPH_NO_RESET,
1816 .ops = &tegra_clk_double_ops,
1819 .parent = &tegra_clk_m,
1820 .max_rate = 52000000,
1826 /* dap_mclk1, belongs to the cdev1 pingroup. */
1827 static struct clk tegra_clk_cdev1 = {
1829 .ops = &tegra_cdev_clk_ops,
1831 .max_rate = 26000000,
1837 /* dap_mclk2, belongs to the cdev2 pingroup. */
1838 static struct clk tegra_clk_cdev2 = {
1840 .ops = &tegra_cdev_clk_ops,
1842 .max_rate = 26000000,
1848 /* initialized before peripheral clocks */
1849 static struct clk_mux_sel mux_audio_sync_clk[8+1];
1850 static const struct audio_sources {
1853 } mux_audio_sync_clk_sources[] = {
1854 { .name = "spdif_in", .value = 0 },
1855 { .name = "i2s1", .value = 1 },
1856 { .name = "i2s2", .value = 2 },
1857 { .name = "pll_a_out0", .value = 4 },
1858 #if 0 /* FIXME: not implemented */
1859 { .name = "ac97", .value = 3 },
1860 { .name = "ext_audio_clk2", .value = 5 },
1861 { .name = "ext_audio_clk1", .value = 6 },
1862 { .name = "ext_vimclk", .value = 7 },
1867 static struct clk tegra_clk_audio = {
1869 .inputs = mux_audio_sync_clk,
1871 .max_rate = 73728000,
1872 .ops = &tegra_audio_sync_clk_ops
1875 static struct clk tegra_clk_audio_2x = {
1877 .flags = PERIPH_NO_RESET,
1878 .max_rate = 48000000,
1879 .ops = &tegra_clk_double_ops,
1882 .parent = &tegra_clk_audio,
1888 struct clk_lookup tegra_audio_clk_lookups[] = {
1889 { .con_id = "audio", .clk = &tegra_clk_audio },
1890 { .con_id = "audio_2x", .clk = &tegra_clk_audio_2x }
1893 /* This is called after peripheral clocks are initialized, as the
1894 * audio_sync clock depends on some of the peripheral clocks.
1897 static void init_audio_sync_clock_mux(void)
1900 struct clk_mux_sel *sel = mux_audio_sync_clk;
1901 const struct audio_sources *src = mux_audio_sync_clk_sources;
1902 struct clk_lookup *lookup;
1904 for (i = 0; src->name; i++, sel++, src++) {
1905 sel->input = tegra_get_clock_by_name(src->name);
1907 pr_err("%s: could not find clk %s\n", __func__,
1909 sel->value = src->value;
1912 lookup = tegra_audio_clk_lookups;
1913 for (i = 0; i < ARRAY_SIZE(tegra_audio_clk_lookups); i++, lookup++) {
1914 clk_init(lookup->clk);
1919 static struct clk_mux_sel mux_cclk[] = {
1920 { .input = &tegra_clk_m, .value = 0},
1921 { .input = &tegra_pll_c, .value = 1},
1922 { .input = &tegra_clk_32k, .value = 2},
1923 { .input = &tegra_pll_m, .value = 3},
1924 { .input = &tegra_pll_p, .value = 4},
1925 { .input = &tegra_pll_p_out4, .value = 5},
1926 { .input = &tegra_pll_p_out3, .value = 6},
1927 { .input = &tegra_clk_d, .value = 7},
1928 { .input = &tegra_pll_x, .value = 8},
1932 static struct clk_mux_sel mux_sclk[] = {
1933 { .input = &tegra_clk_m, .value = 0},
1934 { .input = &tegra_pll_c_out1, .value = 1},
1935 { .input = &tegra_pll_p_out4, .value = 2},
1936 { .input = &tegra_pll_p_out3, .value = 3},
1937 { .input = &tegra_pll_p_out2, .value = 4},
1938 { .input = &tegra_clk_d, .value = 5},
1939 { .input = &tegra_clk_32k, .value = 6},
1940 { .input = &tegra_pll_m_out1, .value = 7},
1944 static struct clk tegra_clk_cclk = {
1948 .ops = &tegra_super_ops,
1949 .max_rate = 1000000000,
1952 static struct clk tegra_clk_sclk = {
1956 .ops = &tegra_super_ops,
1957 .max_rate = 240000000,
1958 .min_rate = 120000000,
1961 static struct clk tegra_clk_virtual_cpu = {
1963 .parent = &tegra_clk_cclk,
1964 .ops = &tegra_cpu_ops,
1965 .max_rate = 1000000000,
1967 .main = &tegra_pll_x,
1968 .backup = &tegra_pll_p,
1972 static struct clk tegra_clk_cop = {
1974 .parent = &tegra_clk_sclk,
1975 .ops = &tegra_cop_ops,
1976 .max_rate = 240000000,
1979 static struct clk tegra_clk_hclk = {
1982 .parent = &tegra_clk_sclk,
1985 .ops = &tegra_bus_ops,
1986 .max_rate = 240000000,
1989 static struct clk tegra_clk_pclk = {
1992 .parent = &tegra_clk_hclk,
1995 .ops = &tegra_bus_ops,
1996 .max_rate = 120000000,
1999 static struct clk tegra_clk_blink = {
2001 .parent = &tegra_clk_32k,
2003 .ops = &tegra_blink_clk_ops,
2007 static struct clk_mux_sel mux_pllm_pllc_pllp_plla[] = {
2008 { .input = &tegra_pll_m, .value = 0},
2009 { .input = &tegra_pll_c, .value = 1},
2010 { .input = &tegra_pll_p, .value = 2},
2011 { .input = &tegra_pll_a_out0, .value = 3},
2015 static struct clk_mux_sel mux_pllm_pllc_pllp_clkm[] = {
2016 { .input = &tegra_pll_m, .value = 0},
2017 { .input = &tegra_pll_c, .value = 1},
2018 { .input = &tegra_pll_p, .value = 2},
2019 { .input = &tegra_clk_m, .value = 3},
2023 static struct clk_mux_sel mux_pllp_pllc_pllm_clkm[] = {
2024 { .input = &tegra_pll_p, .value = 0},
2025 { .input = &tegra_pll_c, .value = 1},
2026 { .input = &tegra_pll_m, .value = 2},
2027 { .input = &tegra_clk_m, .value = 3},
2031 static struct clk_mux_sel mux_pllaout0_audio2x_pllp_clkm[] = {
2032 {.input = &tegra_pll_a_out0, .value = 0},
2033 {.input = &tegra_clk_audio_2x, .value = 1},
2034 {.input = &tegra_pll_p, .value = 2},
2035 {.input = &tegra_clk_m, .value = 3},
2039 static struct clk_mux_sel mux_pllp_plld_pllc_clkm[] = {
2040 {.input = &tegra_pll_p, .value = 0},
2041 {.input = &tegra_pll_d_out0, .value = 1},
2042 {.input = &tegra_pll_c, .value = 2},
2043 {.input = &tegra_clk_m, .value = 3},
2047 static struct clk_mux_sel mux_pllp_pllc_audio_clkm_clk32[] = {
2048 {.input = &tegra_pll_p, .value = 0},
2049 {.input = &tegra_pll_c, .value = 1},
2050 {.input = &tegra_clk_audio, .value = 2},
2051 {.input = &tegra_clk_m, .value = 3},
2052 {.input = &tegra_clk_32k, .value = 4},
2056 static struct clk_mux_sel mux_pllp_pllc_pllm[] = {
2057 {.input = &tegra_pll_p, .value = 0},
2058 {.input = &tegra_pll_c, .value = 1},
2059 {.input = &tegra_pll_m, .value = 2},
2063 static struct clk_mux_sel mux_clk_m[] = {
2064 { .input = &tegra_clk_m, .value = 0},
2068 static struct clk_mux_sel mux_pllp_out3[] = {
2069 { .input = &tegra_pll_p_out3, .value = 0},
2073 static struct clk_mux_sel mux_plld[] = {
2074 { .input = &tegra_pll_d, .value = 0},
2078 static struct clk_mux_sel mux_clk_32k[] = {
2079 { .input = &tegra_clk_32k, .value = 0},
2083 static struct clk_mux_sel mux_pclk[] = {
2084 { .input = &tegra_clk_pclk, .value = 0},
2088 static struct clk tegra_clk_emc = {
2090 .ops = &tegra_emc_clk_ops,
2092 .max_rate = 800000000,
2093 .inputs = mux_pllm_pllc_pllp_clkm,
2094 .flags = MUX | DIV_U71 | PERIPH_EMC_ENB,
2100 #define PERIPH_CLK(_name, _dev, _con, _clk_num, _reg, _max, _inputs, _flags) \
2107 .ops = &tegra_periph_clk_ops, \
2109 .inputs = _inputs, \
2113 .clk_num = _clk_num, \
2117 #define SHARED_CLK(_name, _dev, _con, _parent) \
2124 .ops = &tegra_clk_shared_bus_ops, \
2125 .parent = _parent, \
2128 struct clk tegra_list_clks[] = {
2129 PERIPH_CLK("apbdma", "tegra-dma", NULL, 34, 0, 108000000, mux_pclk, 0),
2130 PERIPH_CLK("rtc", "rtc-tegra", NULL, 4, 0, 32768, mux_clk_32k, PERIPH_NO_RESET),
2131 PERIPH_CLK("timer", "timer", NULL, 5, 0, 26000000, mux_clk_m, 0),
2132 PERIPH_CLK("i2s1", "tegra-i2s.0", NULL, 11, 0x100, 26000000, mux_pllaout0_audio2x_pllp_clkm, MUX | DIV_U71),
2133 PERIPH_CLK("i2s2", "tegra-i2s.1", NULL, 18, 0x104, 26000000, mux_pllaout0_audio2x_pllp_clkm, MUX | DIV_U71),
2134 PERIPH_CLK("spdif_out", "spdif_out", NULL, 10, 0x108, 100000000, mux_pllaout0_audio2x_pllp_clkm, MUX | DIV_U71),
2135 PERIPH_CLK("spdif_in", "spdif_in", NULL, 10, 0x10c, 100000000, mux_pllp_pllc_pllm, MUX | DIV_U71),
2136 PERIPH_CLK("pwm", "pwm", NULL, 17, 0x110, 432000000, mux_pllp_pllc_audio_clkm_clk32, MUX | DIV_U71),
2137 PERIPH_CLK("spi", "spi", NULL, 43, 0x114, 40000000, mux_pllp_pllc_pllm_clkm, MUX | DIV_U71),
2138 PERIPH_CLK("xio", "xio", NULL, 45, 0x120, 150000000, mux_pllp_pllc_pllm_clkm, MUX | DIV_U71),
2139 PERIPH_CLK("twc", "twc", NULL, 16, 0x12c, 150000000, mux_pllp_pllc_pllm_clkm, MUX | DIV_U71),
2140 PERIPH_CLK("sbc1", "spi_tegra.0", NULL, 41, 0x134, 160000000, mux_pllp_pllc_pllm_clkm, MUX | DIV_U71),
2141 PERIPH_CLK("sbc2", "spi_tegra.1", NULL, 44, 0x118, 160000000, mux_pllp_pllc_pllm_clkm, MUX | DIV_U71),
2142 PERIPH_CLK("sbc3", "spi_tegra.2", NULL, 46, 0x11c, 160000000, mux_pllp_pllc_pllm_clkm, MUX | DIV_U71),
2143 PERIPH_CLK("sbc4", "spi_tegra.3", NULL, 68, 0x1b4, 160000000, mux_pllp_pllc_pllm_clkm, MUX | DIV_U71),
2144 PERIPH_CLK("ide", "ide", NULL, 25, 0x144, 100000000, mux_pllp_pllc_pllm_clkm, MUX | DIV_U71), /* requires min voltage */
2145 PERIPH_CLK("ndflash", "tegra_nand", NULL, 13, 0x160, 164000000, mux_pllp_pllc_pllm_clkm, MUX | DIV_U71), /* scales with voltage */
2146 PERIPH_CLK("vfir", "vfir", NULL, 7, 0x168, 72000000, mux_pllp_pllc_pllm_clkm, MUX | DIV_U71),
2147 PERIPH_CLK("sdmmc1", "sdhci-tegra.0", NULL, 14, 0x150, 52000000, mux_pllp_pllc_pllm_clkm, MUX | DIV_U71), /* scales with voltage */
2148 PERIPH_CLK("sdmmc2", "sdhci-tegra.1", NULL, 9, 0x154, 52000000, mux_pllp_pllc_pllm_clkm, MUX | DIV_U71), /* scales with voltage */
2149 PERIPH_CLK("sdmmc3", "sdhci-tegra.2", NULL, 69, 0x1bc, 52000000, mux_pllp_pllc_pllm_clkm, MUX | DIV_U71), /* scales with voltage */
2150 PERIPH_CLK("sdmmc4", "sdhci-tegra.3", NULL, 15, 0x164, 52000000, mux_pllp_pllc_pllm_clkm, MUX | DIV_U71), /* scales with voltage */
2151 PERIPH_CLK("vcp", "tegra-avp", "vcp", 29, 0, 250000000, mux_clk_m, 0),
2152 PERIPH_CLK("bsea", "tegra-avp", "bsea", 62, 0, 250000000, mux_clk_m, 0),
2153 PERIPH_CLK("bsev", "tegra-aes", "bsev", 63, 0, 250000000, mux_clk_m, 0),
2154 PERIPH_CLK("vde", "tegra-avp", "vde", 61, 0x1c8, 250000000, mux_pllp_pllc_pllm_clkm, MUX | DIV_U71), /* scales with voltage and process_id */
2155 PERIPH_CLK("csite", "csite", NULL, 73, 0x1d4, 144000000, mux_pllp_pllc_pllm_clkm, MUX | DIV_U71), /* max rate ??? */
2156 /* FIXME: what is la? */
2157 PERIPH_CLK("la", "la", NULL, 76, 0x1f8, 26000000, mux_pllp_pllc_pllm_clkm, MUX | DIV_U71),
2158 PERIPH_CLK("owr", "tegra_w1", NULL, 71, 0x1cc, 26000000, mux_pllp_pllc_pllm_clkm, MUX | DIV_U71),
2159 PERIPH_CLK("nor", "nor", NULL, 42, 0x1d0, 92000000, mux_pllp_pllc_pllm_clkm, MUX | DIV_U71), /* requires min voltage */
2160 PERIPH_CLK("mipi", "mipi", NULL, 50, 0x174, 60000000, mux_pllp_pllc_pllm_clkm, MUX | DIV_U71), /* scales with voltage */
2161 PERIPH_CLK("i2c1", "tegra-i2c.0", NULL, 12, 0x124, 26000000, mux_pllp_pllc_pllm_clkm, MUX | DIV_U16),
2162 PERIPH_CLK("i2c2", "tegra-i2c.1", NULL, 54, 0x198, 26000000, mux_pllp_pllc_pllm_clkm, MUX | DIV_U16),
2163 PERIPH_CLK("i2c3", "tegra-i2c.2", NULL, 67, 0x1b8, 26000000, mux_pllp_pllc_pllm_clkm, MUX | DIV_U16),
2164 PERIPH_CLK("dvc", "tegra-i2c.3", NULL, 47, 0x128, 26000000, mux_pllp_pllc_pllm_clkm, MUX | DIV_U16),
2165 PERIPH_CLK("i2c1_i2c", "tegra-i2c.0", "i2c", 0, 0, 72000000, mux_pllp_out3, 0),
2166 PERIPH_CLK("i2c2_i2c", "tegra-i2c.1", "i2c", 0, 0, 72000000, mux_pllp_out3, 0),
2167 PERIPH_CLK("i2c3_i2c", "tegra-i2c.2", "i2c", 0, 0, 72000000, mux_pllp_out3, 0),
2168 PERIPH_CLK("dvc_i2c", "tegra-i2c.3", "i2c", 0, 0, 72000000, mux_pllp_out3, 0),
2169 PERIPH_CLK("uarta", "uart.0", NULL, 6, 0x178, 600000000, mux_pllp_pllc_pllm_clkm, MUX),
2170 PERIPH_CLK("uartb", "uart.1", NULL, 7, 0x17c, 600000000, mux_pllp_pllc_pllm_clkm, MUX),
2171 PERIPH_CLK("uartc", "uart.2", NULL, 55, 0x1a0, 600000000, mux_pllp_pllc_pllm_clkm, MUX),
2172 PERIPH_CLK("uartd", "uart.3", NULL, 65, 0x1c0, 600000000, mux_pllp_pllc_pllm_clkm, MUX),
2173 PERIPH_CLK("uarte", "uart.4", NULL, 66, 0x1c4, 600000000, mux_pllp_pllc_pllm_clkm, MUX),
2174 PERIPH_CLK("3d", "3d", NULL, 24, 0x158, 300000000, mux_pllm_pllc_pllp_plla, MUX | DIV_U71 | PERIPH_MANUAL_RESET), /* scales with voltage and process_id */
2175 PERIPH_CLK("2d", "2d", NULL, 21, 0x15c, 300000000, mux_pllm_pllc_pllp_plla, MUX | DIV_U71), /* scales with voltage and process_id */
2176 PERIPH_CLK("vi", "tegra_camera", "vi", 20, 0x148, 150000000, mux_pllm_pllc_pllp_plla, MUX | DIV_U71), /* scales with voltage and process_id */
2177 PERIPH_CLK("vi_sensor", "tegra_camera", "vi_sensor", 20, 0x1a8, 150000000, mux_pllm_pllc_pllp_plla, MUX | DIV_U71 | PERIPH_NO_RESET), /* scales with voltage and process_id */
2178 PERIPH_CLK("epp", "epp", NULL, 19, 0x16c, 300000000, mux_pllm_pllc_pllp_plla, MUX | DIV_U71), /* scales with voltage and process_id */
2179 PERIPH_CLK("mpe", "mpe", NULL, 60, 0x170, 250000000, mux_pllm_pllc_pllp_plla, MUX | DIV_U71), /* scales with voltage and process_id */
2180 PERIPH_CLK("host1x", "host1x", NULL, 28, 0x180, 166000000, mux_pllm_pllc_pllp_plla, MUX | DIV_U71), /* scales with voltage and process_id */
2181 PERIPH_CLK("cve", "cve", NULL, 49, 0x140, 250000000, mux_pllp_plld_pllc_clkm, MUX | DIV_U71), /* requires min voltage */
2182 PERIPH_CLK("tvo", "tvo", NULL, 49, 0x188, 250000000, mux_pllp_plld_pllc_clkm, MUX | DIV_U71), /* requires min voltage */
2183 PERIPH_CLK("hdmi", "hdmi", NULL, 51, 0x18c, 600000000, mux_pllp_plld_pllc_clkm, MUX | DIV_U71), /* requires min voltage */
2184 PERIPH_CLK("tvdac", "tvdac", NULL, 53, 0x194, 250000000, mux_pllp_plld_pllc_clkm, MUX | DIV_U71), /* requires min voltage */
2185 PERIPH_CLK("disp1", "tegradc.0", NULL, 27, 0x138, 600000000, mux_pllp_plld_pllc_clkm, MUX | DIV_U71), /* scales with voltage and process_id */
2186 PERIPH_CLK("disp2", "tegradc.1", NULL, 26, 0x13c, 600000000, mux_pllp_plld_pllc_clkm, MUX | DIV_U71), /* scales with voltage and process_id */
2187 PERIPH_CLK("usbd", "fsl-tegra-udc", NULL, 22, 0, 480000000, mux_clk_m, 0), /* requires min voltage */
2188 PERIPH_CLK("usb2", "tegra-ehci.1", NULL, 58, 0, 480000000, mux_clk_m, 0), /* requires min voltage */
2189 PERIPH_CLK("usb3", "tegra-ehci.2", NULL, 59, 0, 480000000, mux_clk_m, 0), /* requires min voltage */
2190 PERIPH_CLK("dsi", "dsi", NULL, 48, 0, 500000000, mux_plld, 0), /* scales with voltage */
2191 PERIPH_CLK("csi", "tegra_camera", "csi", 52, 0, 72000000, mux_pllp_out3, 0),
2192 PERIPH_CLK("isp", "tegra_camera", "isp", 23, 0, 150000000, mux_clk_m, 0), /* same frequency as VI */
2193 PERIPH_CLK("csus", "tegra_camera", "csus", 92, 0, 150000000, mux_clk_m, PERIPH_NO_RESET),
2194 PERIPH_CLK("pex", NULL, "pex", 70, 0, 26000000, mux_clk_m, PERIPH_MANUAL_RESET),
2195 PERIPH_CLK("afi", NULL, "afi", 72, 0, 26000000, mux_clk_m, PERIPH_MANUAL_RESET),
2196 PERIPH_CLK("pcie_xclk", NULL, "pcie_xclk", 74, 0, 26000000, mux_clk_m, PERIPH_MANUAL_RESET),
2198 SHARED_CLK("avp.sclk", "tegra-avp", "sclk", &tegra_clk_sclk),
2199 SHARED_CLK("avp.emc", "tegra-avp", "emc", &tegra_clk_emc),
2200 SHARED_CLK("cpu.emc", "cpu", "emc", &tegra_clk_emc),
2201 SHARED_CLK("disp1.emc", "tegradc.0", "emc", &tegra_clk_emc),
2202 SHARED_CLK("disp2.emc", "tegradc.1", "emc", &tegra_clk_emc),
2203 SHARED_CLK("hdmi.emc", "hdmi", "emc", &tegra_clk_emc),
2204 SHARED_CLK("host.emc", "tegra_grhost", "emc", &tegra_clk_emc),
2205 SHARED_CLK("usbd.emc", "fsl-tegra-udc", "emc", &tegra_clk_emc),
2206 SHARED_CLK("usb1.emc", "tegra-ehci.0", "emc", &tegra_clk_emc),
2207 SHARED_CLK("usb2.emc", "tegra-ehci.1", "emc", &tegra_clk_emc),
2208 SHARED_CLK("usb3.emc", "tegra-ehci.2", "emc", &tegra_clk_emc),
2211 #define CLK_DUPLICATE(_name, _dev, _con) \
2220 /* Some clocks may be used by different drivers depending on the board
2221 * configuration. List those here to register them twice in the clock lookup
2222 * table under two names.
2224 struct clk_duplicate tegra_clk_duplicates[] = {
2225 CLK_DUPLICATE("uarta", "tegra_uart.0", NULL),
2226 CLK_DUPLICATE("uartb", "tegra_uart.1", NULL),
2227 CLK_DUPLICATE("uartc", "tegra_uart.2", NULL),
2228 CLK_DUPLICATE("uartd", "tegra_uart.3", NULL),
2229 CLK_DUPLICATE("uarte", "tegra_uart.4", NULL),
2230 CLK_DUPLICATE("usbd", "utmip-pad", NULL),
2231 CLK_DUPLICATE("usbd", "tegra-ehci.0", NULL),
2232 CLK_DUPLICATE("usbd", "tegra-otg", NULL),
2233 CLK_DUPLICATE("hdmi", "tegradc.0", "hdmi"),
2234 CLK_DUPLICATE("hdmi", "tegradc.1", "hdmi"),
2235 CLK_DUPLICATE("pwm", "tegra_pwm.0", NULL),
2236 CLK_DUPLICATE("pwm", "tegra_pwm.1", NULL),
2237 CLK_DUPLICATE("pwm", "tegra_pwm.2", NULL),
2238 CLK_DUPLICATE("pwm", "tegra_pwm.3", NULL),
2239 CLK_DUPLICATE("host1x", "tegra_grhost", "host1x"),
2240 CLK_DUPLICATE("2d", "tegra_grhost", "gr2d"),
2241 CLK_DUPLICATE("3d", "tegra_grhost", "gr3d"),
2242 CLK_DUPLICATE("epp", "tegra_grhost", "epp"),
2243 CLK_DUPLICATE("mpe", "tegra_grhost", "mpe"),
2244 CLK_DUPLICATE("cop", "tegra-avp", "cop"),
2245 CLK_DUPLICATE("vde", "tegra-aes", "vde"),
2248 #define CLK(dev, con, ck) \
2255 struct clk *tegra_ptr_clks[] = {
2282 &tegra_clk_virtual_cpu,
2288 static void tegra2_init_one_clock(struct clk *c)
2291 INIT_LIST_HEAD(&c->shared_bus_list);
2292 if (!c->lookup.dev_id && !c->lookup.con_id)
2293 c->lookup.con_id = c->name;
2295 clkdev_add(&c->lookup);
2298 void __init tegra2_init_clocks(void)
2303 for (i = 0; i < ARRAY_SIZE(tegra_ptr_clks); i++)
2304 tegra2_init_one_clock(tegra_ptr_clks[i]);
2306 for (i = 0; i < ARRAY_SIZE(tegra_list_clks); i++)
2307 tegra2_init_one_clock(&tegra_list_clks[i]);
2309 for (i = 0; i < ARRAY_SIZE(tegra_clk_duplicates); i++) {
2310 c = tegra_get_clock_by_name(tegra_clk_duplicates[i].name);
2312 pr_err("%s: Unknown duplicate clock %s\n", __func__,
2313 tegra_clk_duplicates[i].name);
2317 tegra_clk_duplicates[i].lookup.clk = c;
2318 clkdev_add(&tegra_clk_duplicates[i].lookup);
2321 init_audio_sync_clock_mux();
2325 static u32 clk_rst_suspend[RST_DEVICES_NUM + CLK_OUT_ENB_NUM +
2326 PERIPH_CLK_SOURCE_NUM + 22];
2328 void tegra_clk_suspend(void)
2330 unsigned long off, i;
2331 u32 *ctx = clk_rst_suspend;
2333 *ctx++ = clk_readl(OSC_CTRL) & OSC_CTRL_MASK;
2334 *ctx++ = clk_readl(tegra_pll_c.reg + PLL_BASE);
2335 *ctx++ = clk_readl(tegra_pll_c.reg + PLL_MISC(&tegra_pll_c));
2336 *ctx++ = clk_readl(tegra_pll_a.reg + PLL_BASE);
2337 *ctx++ = clk_readl(tegra_pll_a.reg + PLL_MISC(&tegra_pll_a));
2338 *ctx++ = clk_readl(tegra_pll_s.reg + PLL_BASE);
2339 *ctx++ = clk_readl(tegra_pll_s.reg + PLL_MISC(&tegra_pll_s));
2340 *ctx++ = clk_readl(tegra_pll_d.reg + PLL_BASE);
2341 *ctx++ = clk_readl(tegra_pll_d.reg + PLL_MISC(&tegra_pll_d));
2342 *ctx++ = clk_readl(tegra_pll_u.reg + PLL_BASE);
2343 *ctx++ = clk_readl(tegra_pll_u.reg + PLL_MISC(&tegra_pll_u));
2345 *ctx++ = clk_readl(tegra_pll_m_out1.reg);
2346 *ctx++ = clk_readl(tegra_pll_a_out0.reg);
2347 *ctx++ = clk_readl(tegra_pll_c_out1.reg);
2349 *ctx++ = clk_readl(tegra_clk_cclk.reg);
2350 *ctx++ = clk_readl(tegra_clk_cclk.reg + SUPER_CLK_DIVIDER);
2352 *ctx++ = clk_readl(tegra_clk_sclk.reg);
2353 *ctx++ = clk_readl(tegra_clk_sclk.reg + SUPER_CLK_DIVIDER);
2354 *ctx++ = clk_readl(tegra_clk_pclk.reg);
2356 *ctx++ = clk_readl(tegra_clk_audio.reg);
2358 for (off = PERIPH_CLK_SOURCE_I2S1; off <= PERIPH_CLK_SOURCE_OSC;
2360 if (off == PERIPH_CLK_SOURCE_EMC)
2362 *ctx++ = clk_readl(off);
2366 for (i = 0; i < RST_DEVICES_NUM; i++, off += 4)
2367 *ctx++ = clk_readl(off);
2370 for (i = 0; i < CLK_OUT_ENB_NUM; i++, off += 4)
2371 *ctx++ = clk_readl(off);
2373 *ctx++ = clk_readl(MISC_CLK_ENB);
2374 *ctx++ = clk_readl(CLK_MASK_ARM);
2376 BUG_ON(ctx - clk_rst_suspend != ARRAY_SIZE(clk_rst_suspend));
2379 void tegra_clk_resume(void)
2381 unsigned long off, i;
2382 const u32 *ctx = clk_rst_suspend;
2385 val = clk_readl(OSC_CTRL) & ~OSC_CTRL_MASK;
2387 clk_writel(val, OSC_CTRL);
2389 clk_writel(*ctx++, tegra_pll_c.reg + PLL_BASE);
2390 clk_writel(*ctx++, tegra_pll_c.reg + PLL_MISC(&tegra_pll_c));
2391 clk_writel(*ctx++, tegra_pll_a.reg + PLL_BASE);
2392 clk_writel(*ctx++, tegra_pll_a.reg + PLL_MISC(&tegra_pll_a));
2393 clk_writel(*ctx++, tegra_pll_s.reg + PLL_BASE);
2394 clk_writel(*ctx++, tegra_pll_s.reg + PLL_MISC(&tegra_pll_s));
2395 clk_writel(*ctx++, tegra_pll_d.reg + PLL_BASE);
2396 clk_writel(*ctx++, tegra_pll_d.reg + PLL_MISC(&tegra_pll_d));
2397 clk_writel(*ctx++, tegra_pll_u.reg + PLL_BASE);
2398 clk_writel(*ctx++, tegra_pll_u.reg + PLL_MISC(&tegra_pll_u));
2401 clk_writel(*ctx++, tegra_pll_m_out1.reg);
2402 clk_writel(*ctx++, tegra_pll_a_out0.reg);
2403 clk_writel(*ctx++, tegra_pll_c_out1.reg);
2405 clk_writel(*ctx++, tegra_clk_cclk.reg);
2406 clk_writel(*ctx++, tegra_clk_cclk.reg + SUPER_CLK_DIVIDER);
2408 clk_writel(*ctx++, tegra_clk_sclk.reg);
2409 clk_writel(*ctx++, tegra_clk_sclk.reg + SUPER_CLK_DIVIDER);
2410 clk_writel(*ctx++, tegra_clk_pclk.reg);
2412 clk_writel(*ctx++, tegra_clk_audio.reg);
2414 /* enable all clocks before configuring clock sources */
2415 clk_writel(0xbffffff9ul, CLK_OUT_ENB);
2416 clk_writel(0xfefffff7ul, CLK_OUT_ENB + 4);
2417 clk_writel(0x77f01bfful, CLK_OUT_ENB + 8);
2420 for (off = PERIPH_CLK_SOURCE_I2S1; off <= PERIPH_CLK_SOURCE_OSC;
2422 if (off == PERIPH_CLK_SOURCE_EMC)
2424 clk_writel(*ctx++, off);
2429 for (i = 0; i < RST_DEVICES_NUM; i++, off += 4)
2430 clk_writel(*ctx++, off);
2434 for (i = 0; i < CLK_OUT_ENB_NUM; i++, off += 4)
2435 clk_writel(*ctx++, off);
2438 clk_writel(*ctx++, MISC_CLK_ENB);
2439 clk_writel(*ctx++, CLK_MASK_ARM);