2 * linux/arch/arm/mach-omap2/pm34xx.c
4 * OMAP3 Power Management Routines
6 * Copyright (C) 2006-2008 Nokia Corporation
7 * Tony Lindgren <tony@atomide.com>
10 * Copyright (C) 2005 Texas Instruments, Inc.
11 * Richard Woodruff <r-woodruff2@ti.com>
13 * Based on pm.c for omap1
15 * This program is free software; you can redistribute it and/or modify
16 * it under the terms of the GNU General Public License version 2 as
17 * published by the Free Software Foundation.
21 #include <linux/suspend.h>
22 #include <linux/interrupt.h>
23 #include <linux/module.h>
24 #include <linux/list.h>
25 #include <linux/err.h>
27 #include <mach/gpio.h>
28 #include <mach/sram.h>
30 #include <mach/clockdomain.h>
31 #include <mach/powerdomain.h>
32 #include <mach/serial.h>
33 #include <mach/control.h>
36 #include "cm-regbits-34xx.h"
37 #include "prm-regbits-34xx.h"
41 #include "smartreflex.h"
44 struct powerdomain *pwrdm;
47 struct list_head node;
50 static LIST_HEAD(pwrst_list);
52 static void (*_omap_sram_idle)(u32 *addr, int save_state);
54 static void (*saved_idle)(void);
56 static struct powerdomain *mpu_pwrdm;
58 /* PRCM Interrupt Handler for wakeups */
59 static irqreturn_t prcm_interrupt_handler (int irq, void *dev_id)
61 u32 wkst, irqstatus_mpu;
65 wkst = prm_read_mod_reg(WKUP_MOD, PM_WKST);
67 iclk = cm_read_mod_reg(WKUP_MOD, CM_ICLKEN);
68 fclk = cm_read_mod_reg(WKUP_MOD, CM_FCLKEN);
69 cm_set_mod_reg_bits(wkst, WKUP_MOD, CM_ICLKEN);
70 cm_set_mod_reg_bits(wkst, WKUP_MOD, CM_FCLKEN);
71 prm_write_mod_reg(wkst, WKUP_MOD, PM_WKST);
72 while (prm_read_mod_reg(WKUP_MOD, PM_WKST));
73 cm_write_mod_reg(iclk, WKUP_MOD, CM_ICLKEN);
74 cm_write_mod_reg(fclk, WKUP_MOD, CM_FCLKEN);
78 wkst = prm_read_mod_reg(CORE_MOD, PM_WKST1);
80 iclk = cm_read_mod_reg(CORE_MOD, CM_ICLKEN1);
81 fclk = cm_read_mod_reg(CORE_MOD, CM_FCLKEN1);
82 cm_set_mod_reg_bits(wkst, CORE_MOD, CM_ICLKEN1);
83 cm_set_mod_reg_bits(wkst, CORE_MOD, CM_FCLKEN1);
84 prm_write_mod_reg(wkst, CORE_MOD, PM_WKST1);
85 while (prm_read_mod_reg(CORE_MOD, PM_WKST1));
86 cm_write_mod_reg(iclk, CORE_MOD, CM_ICLKEN1);
87 cm_write_mod_reg(fclk, CORE_MOD, CM_FCLKEN1);
89 wkst = prm_read_mod_reg(CORE_MOD, OMAP3430ES2_PM_WKST3);
91 iclk = cm_read_mod_reg(CORE_MOD, CM_ICLKEN3);
92 fclk = cm_read_mod_reg(CORE_MOD, OMAP3430ES2_CM_FCLKEN3);
93 cm_set_mod_reg_bits(wkst, CORE_MOD, CM_ICLKEN3);
94 cm_set_mod_reg_bits(wkst, CORE_MOD, OMAP3430ES2_CM_FCLKEN3);
95 prm_write_mod_reg(wkst, CORE_MOD, OMAP3430ES2_PM_WKST3);
96 while (prm_read_mod_reg(CORE_MOD, OMAP3430ES2_PM_WKST3));
97 cm_write_mod_reg(iclk, CORE_MOD, CM_ICLKEN3);
98 cm_write_mod_reg(fclk, CORE_MOD, OMAP3430ES2_CM_FCLKEN3);
102 wkst = prm_read_mod_reg(OMAP3430_PER_MOD, PM_WKST);
104 iclk = cm_read_mod_reg(OMAP3430_PER_MOD, CM_ICLKEN);
105 fclk = cm_read_mod_reg(OMAP3430_PER_MOD, CM_FCLKEN);
106 cm_set_mod_reg_bits(wkst, OMAP3430_PER_MOD, CM_ICLKEN);
107 cm_set_mod_reg_bits(wkst, OMAP3430_PER_MOD, CM_FCLKEN);
108 prm_write_mod_reg(wkst, OMAP3430_PER_MOD, PM_WKST);
109 while (prm_read_mod_reg(OMAP3430_PER_MOD, PM_WKST));
110 cm_write_mod_reg(iclk, OMAP3430_PER_MOD, CM_ICLKEN);
111 cm_write_mod_reg(fclk, OMAP3430_PER_MOD, CM_FCLKEN);
114 if (omap_rev() > OMAP3430_REV_ES1_0) {
116 wkst = prm_read_mod_reg(OMAP3430ES2_USBHOST_MOD, PM_WKST);
118 iclk = cm_read_mod_reg(OMAP3430ES2_USBHOST_MOD,
120 fclk = cm_read_mod_reg(OMAP3430ES2_USBHOST_MOD,
122 cm_set_mod_reg_bits(wkst, OMAP3430ES2_USBHOST_MOD,
124 cm_set_mod_reg_bits(wkst, OMAP3430ES2_USBHOST_MOD,
126 prm_write_mod_reg(wkst, OMAP3430ES2_USBHOST_MOD,
128 while (prm_read_mod_reg(OMAP3430ES2_USBHOST_MOD,
130 cm_write_mod_reg(iclk, OMAP3430ES2_USBHOST_MOD,
132 cm_write_mod_reg(fclk, OMAP3430ES2_USBHOST_MOD,
137 irqstatus_mpu = prm_read_mod_reg(OCP_MOD,
138 OMAP2_PRM_IRQSTATUS_MPU_OFFSET);
139 prm_write_mod_reg(irqstatus_mpu, OCP_MOD,
140 OMAP2_PRM_IRQSTATUS_MPU_OFFSET);
142 while (prm_read_mod_reg(OCP_MOD, OMAP2_PRM_IRQSTATUS_MPU_OFFSET));
147 static void omap_sram_idle(void)
149 /* Variable to tell what needs to be saved and restored
150 * in omap_sram_idle*/
151 /* save_state = 0 => Nothing to save and restored */
152 /* save_state = 1 => Only L1 and logic lost */
153 /* save_state = 2 => Only L2 lost */
154 /* save_state = 3 => L1, L2 and logic lost */
155 int save_state = 0, mpu_next_state;
157 if (!_omap_sram_idle)
160 mpu_next_state = pwrdm_read_next_pwrst(mpu_pwrdm);
161 switch (mpu_next_state) {
162 case PWRDM_POWER_RET:
163 /* No need to save context */
168 printk(KERN_ERR "Invalid mpu state in sram_idle\n");
171 /* Disable smartreflex before entering WFI */
172 disable_smartreflex(SR1);
173 disable_smartreflex(SR2);
175 omap2_gpio_prepare_for_retention();
176 omap_uart_prepare_idle(0);
177 omap_uart_prepare_idle(1);
178 omap_uart_prepare_idle(2);
180 _omap_sram_idle(NULL, save_state);
182 omap_uart_resume_idle(2);
183 omap_uart_resume_idle(1);
184 omap_uart_resume_idle(0);
185 omap2_gpio_resume_after_retention();
187 /* Enable smartreflex after WFI */
188 enable_smartreflex(SR1);
189 enable_smartreflex(SR2);
193 * Check if functional clocks are enabled before entering
194 * sleep. This function could be behind CONFIG_PM_DEBUG
195 * when all drivers are configuring their sysconfig registers
196 * properly and using their clocks properly.
198 static int omap3_fclks_active(void)
200 u32 fck_core1 = 0, fck_core3 = 0, fck_sgx = 0, fck_dss = 0,
201 fck_cam = 0, fck_per = 0, fck_usbhost = 0;
203 fck_core1 = cm_read_mod_reg(CORE_MOD,
205 if (omap_rev() > OMAP3430_REV_ES1_0) {
206 fck_core3 = cm_read_mod_reg(CORE_MOD,
207 OMAP3430ES2_CM_FCLKEN3);
208 fck_sgx = cm_read_mod_reg(OMAP3430ES2_SGX_MOD,
210 fck_usbhost = cm_read_mod_reg(OMAP3430ES2_USBHOST_MOD,
213 fck_sgx = cm_read_mod_reg(GFX_MOD,
214 OMAP3430ES2_CM_FCLKEN3);
215 fck_dss = cm_read_mod_reg(OMAP3430_DSS_MOD,
217 fck_cam = cm_read_mod_reg(OMAP3430_CAM_MOD,
219 fck_per = cm_read_mod_reg(OMAP3430_PER_MOD,
222 /* Ignore UART clocks. These are handled by UART core (serial.c) */
223 fck_core1 &= ~(OMAP3430_EN_UART1 | OMAP3430_EN_UART2);
224 fck_per &= ~OMAP3430_EN_UART3;
226 if (fck_core1 | fck_core3 | fck_sgx | fck_dss |
227 fck_cam | fck_per | fck_usbhost)
232 static int omap3_can_sleep(void)
234 if (!enable_dyn_sleep)
236 if (!omap_uart_can_sleep())
238 if (omap3_fclks_active())
240 if (atomic_read(&sleep_block) > 0)
245 /* This sets pwrdm state (other than mpu & core. Currently only ON &
246 * RET are supported. Function is assuming that clkdm doesn't have
247 * hw_sup mode enabled. */
248 static int set_pwrdm_state(struct powerdomain *pwrdm, u32 state)
251 int sleep_switch = 0;
254 if (pwrdm == NULL || IS_ERR(pwrdm))
257 while (!(pwrdm->pwrsts & (1 << state))) {
258 if (state == PWRDM_POWER_OFF)
263 cur_state = pwrdm_read_next_pwrst(pwrdm);
264 if (cur_state == state)
267 if (pwrdm_read_pwrst(pwrdm) < PWRDM_POWER_ON) {
268 omap2_clkdm_wakeup(pwrdm->pwrdm_clkdms[0]);
270 pwrdm_wait_transition(pwrdm);
273 ret = pwrdm_set_next_pwrst(pwrdm, state);
275 printk(KERN_ERR "Unable to set state of powerdomain: %s\n",
281 omap2_clkdm_allow_idle(pwrdm->pwrdm_clkdms[0]);
282 pwrdm_wait_transition(pwrdm);
289 static void omap3_pm_idle(void)
294 if (!omap3_can_sleep())
297 if (omap_irq_pending())
307 static int omap3_pm_prepare(void)
309 saved_idle = pm_idle;
314 static int omap3_pm_suspend(void)
316 struct power_state *pwrst;
319 /* Read current next_pwrsts */
320 list_for_each_entry(pwrst, &pwrst_list, node)
321 pwrst->saved_state = pwrdm_read_next_pwrst(pwrst->pwrdm);
322 /* Set ones wanted by suspend */
323 list_for_each_entry(pwrst, &pwrst_list, node) {
324 if (set_pwrdm_state(pwrst->pwrdm, pwrst->next_state))
326 if (pwrdm_clear_all_prev_pwrst(pwrst->pwrdm))
330 omap_uart_prepare_suspend();
334 /* Restore next_pwrsts */
335 list_for_each_entry(pwrst, &pwrst_list, node) {
336 set_pwrdm_state(pwrst->pwrdm, pwrst->saved_state);
337 state = pwrdm_read_prev_pwrst(pwrst->pwrdm);
338 if (state > pwrst->next_state) {
339 printk(KERN_INFO "Powerdomain (%s) didn't enter "
341 pwrst->pwrdm->name, pwrst->next_state);
346 printk(KERN_ERR "Could not enter target state in pm_suspend\n");
348 printk(KERN_INFO "Successfully put all powerdomains "
349 "to target state\n");
354 static int omap3_pm_enter(suspend_state_t state)
359 case PM_SUSPEND_STANDBY:
361 ret = omap3_pm_suspend();
370 static void omap3_pm_finish(void)
372 pm_idle = saved_idle;
375 static struct platform_suspend_ops omap_pm_ops = {
376 .prepare = omap3_pm_prepare,
377 .enter = omap3_pm_enter,
378 .finish = omap3_pm_finish,
379 .valid = suspend_valid_only_mem,
384 * omap3_iva_idle(): ensure IVA is in idle so it can be put into
387 * In cases where IVA2 is activated by bootcode, it may prevent
388 * full-chip retention or off-mode because it is not idle. This
389 * function forces the IVA2 into idle state so it can go
390 * into retention/off and thus allow full-chip retention/off.
393 static void __init omap3_iva_idle(void)
395 /* ensure IVA2 clock is disabled */
396 cm_write_mod_reg(0, OMAP3430_IVA2_MOD, CM_FCLKEN);
399 prm_write_mod_reg(OMAP3430_RST1_IVA2 |
402 OMAP3430_IVA2_MOD, RM_RSTCTRL);
404 /* Enable IVA2 clock */
405 cm_write_mod_reg(OMAP3430_CM_FCLKEN_IVA2_EN_IVA2,
406 OMAP3430_IVA2_MOD, CM_FCLKEN);
408 /* Set IVA2 boot mode to 'idle' */
409 omap_ctrl_writel(OMAP3_IVA2_BOOTMOD_IDLE,
410 OMAP343X_CONTROL_IVA2_BOOTMOD);
413 prm_write_mod_reg(0, OMAP3430_IVA2_MOD, RM_RSTCTRL);
415 /* Disable IVA2 clock */
416 cm_write_mod_reg(0, OMAP3430_IVA2_MOD, CM_FCLKEN);
419 prm_write_mod_reg(OMAP3430_RST1_IVA2 |
422 OMAP3430_IVA2_MOD, RM_RSTCTRL);
425 static void __init prcm_setup_regs(void)
428 prm_write_mod_reg(OMAP3430_RM_RSTCTRL_CORE_MODEM_SW_RSTPWRON |
429 OMAP3430_RM_RSTCTRL_CORE_MODEM_SW_RST,
430 CORE_MOD, RM_RSTCTRL);
431 prm_write_mod_reg(0, CORE_MOD, RM_RSTCTRL);
433 /* XXX Reset all wkdeps. This should be done when initializing
435 prm_write_mod_reg(0, OMAP3430_IVA2_MOD, PM_WKDEP);
436 prm_write_mod_reg(0, MPU_MOD, PM_WKDEP);
437 prm_write_mod_reg(0, OMAP3430_DSS_MOD, PM_WKDEP);
438 prm_write_mod_reg(0, OMAP3430_NEON_MOD, PM_WKDEP);
439 prm_write_mod_reg(0, OMAP3430_CAM_MOD, PM_WKDEP);
440 prm_write_mod_reg(0, OMAP3430_PER_MOD, PM_WKDEP);
441 if (omap_rev() > OMAP3430_REV_ES1_0) {
442 prm_write_mod_reg(0, OMAP3430ES2_SGX_MOD, PM_WKDEP);
443 prm_write_mod_reg(0, OMAP3430ES2_USBHOST_MOD, PM_WKDEP);
445 prm_write_mod_reg(0, GFX_MOD, PM_WKDEP);
448 * Enable interface clock autoidle for all modules.
449 * Note that in the long run this should be done by clockfw
452 OMAP3430ES2_AUTO_MMC3 |
453 OMAP3430ES2_AUTO_ICR |
455 OMAP3430_AUTO_SHA12 |
459 OMAP3430_AUTO_MSPRO |
461 OMAP3430_AUTO_MCSPI4 |
462 OMAP3430_AUTO_MCSPI3 |
463 OMAP3430_AUTO_MCSPI2 |
464 OMAP3430_AUTO_MCSPI1 |
468 OMAP3430_AUTO_UART2 |
469 OMAP3430_AUTO_UART1 |
470 OMAP3430_AUTO_GPT11 |
471 OMAP3430_AUTO_GPT10 |
472 OMAP3430_AUTO_MCBSP5 |
473 OMAP3430_AUTO_MCBSP1 |
474 OMAP3430ES1_AUTO_FAC | /* This is es1 only */
475 OMAP3430_AUTO_MAILBOXES |
476 OMAP3430_AUTO_OMAPCTRL |
477 OMAP3430ES1_AUTO_FSHOSTUSB |
478 OMAP3430_AUTO_HSOTGUSB |
479 OMAP3430ES1_AUTO_D2D | /* This is es1 only */
481 CORE_MOD, CM_AUTOIDLE1);
487 OMAP3430_AUTO_SHA11 |
489 CORE_MOD, CM_AUTOIDLE2);
491 if (omap_rev() > OMAP3430_REV_ES1_0) {
493 OMAP3430ES2_AUTO_USBTLL,
494 CORE_MOD, CM_AUTOIDLE3);
500 OMAP3430_AUTO_GPIO1 |
501 OMAP3430_AUTO_32KSYNC |
502 OMAP3430_AUTO_GPT12 |
504 WKUP_MOD, CM_AUTOIDLE);
517 OMAP3430_AUTO_GPIO6 |
518 OMAP3430_AUTO_GPIO5 |
519 OMAP3430_AUTO_GPIO4 |
520 OMAP3430_AUTO_GPIO3 |
521 OMAP3430_AUTO_GPIO2 |
523 OMAP3430_AUTO_UART3 |
532 OMAP3430_AUTO_MCBSP4 |
533 OMAP3430_AUTO_MCBSP3 |
534 OMAP3430_AUTO_MCBSP2,
538 if (omap_rev() > OMAP3430_REV_ES1_0) {
540 OMAP3430ES2_AUTO_USBHOST,
541 OMAP3430ES2_USBHOST_MOD,
546 * Set all plls to autoidle. This is needed until autoidle is
549 cm_write_mod_reg(1 << OMAP3430_AUTO_IVA2_DPLL_SHIFT,
550 OMAP3430_IVA2_MOD, CM_AUTOIDLE2);
551 cm_write_mod_reg(1 << OMAP3430_AUTO_MPU_DPLL_SHIFT,
554 cm_write_mod_reg((1 << OMAP3430_AUTO_PERIPH_DPLL_SHIFT) |
555 (1 << OMAP3430_AUTO_CORE_DPLL_SHIFT),
558 cm_write_mod_reg(1 << OMAP3430ES2_AUTO_PERIPH2_DPLL_SHIFT,
563 * Enable control of expternal oscillator through
564 * sys_clkreq. In the long run clock framework should
567 prm_rmw_mod_reg_bits(OMAP_AUTOEXTCLKMODE_MASK,
568 1 << OMAP_AUTOEXTCLKMODE_SHIFT,
570 OMAP3_PRM_CLKSRC_CTRL_OFFSET);
572 /* setup wakup source */
573 prm_write_mod_reg(OMAP3430_EN_IO | OMAP3430_EN_GPIO1 |
574 OMAP3430_EN_GPT1 | OMAP3430_EN_GPT12,
576 /* No need to write EN_IO, that is always enabled */
577 prm_write_mod_reg(OMAP3430_EN_GPIO1 | OMAP3430_EN_GPT1 |
579 WKUP_MOD, OMAP3430_PM_MPUGRPSEL);
580 /* For some reason IO doesn't generate wakeup event even if
581 * it is selected to mpu wakeup goup */
582 prm_write_mod_reg(OMAP3430_IO_EN | OMAP3430_WKUP_EN,
583 OCP_MOD, OMAP2_PRM_IRQENABLE_MPU_OFFSET);
588 static int __init pwrdms_setup(struct powerdomain *pwrdm)
590 struct power_state *pwrst;
595 pwrst = kmalloc(sizeof(struct power_state), GFP_KERNEL);
598 pwrst->pwrdm = pwrdm;
599 pwrst->next_state = PWRDM_POWER_RET;
600 list_add(&pwrst->node, &pwrst_list);
602 if (pwrdm_has_hdwr_sar(pwrdm))
603 pwrdm_enable_hdwr_sar(pwrdm);
605 return set_pwrdm_state(pwrst->pwrdm, pwrst->next_state);
609 * Enable hw supervised mode for all clockdomains if it's
610 * supported. Initiate sleep transition for other clockdomains, if
613 static int __init clkdms_setup(struct clockdomain *clkdm)
615 if (clkdm->flags & CLKDM_CAN_ENABLE_AUTO)
616 omap2_clkdm_allow_idle(clkdm);
617 else if (clkdm->flags & CLKDM_CAN_FORCE_SLEEP &&
618 atomic_read(&clkdm->usecount) == 0)
619 omap2_clkdm_sleep(clkdm);
623 int __init omap3_pm_init(void)
625 struct power_state *pwrst, *tmp;
628 printk(KERN_ERR "Power Management for TI OMAP3.\n");
630 /* XXX prcm_setup_regs needs to be before enabling hw
631 * supervised mode for powerdomains */
634 ret = request_irq(INT_34XX_PRCM_MPU_IRQ,
635 (irq_handler_t)prcm_interrupt_handler,
636 IRQF_DISABLED, "prcm", NULL);
638 printk(KERN_ERR "request_irq failed to register for 0x%x\n",
639 INT_34XX_PRCM_MPU_IRQ);
643 ret = pwrdm_for_each(pwrdms_setup);
645 printk(KERN_ERR "Failed to setup powerdomains\n");
649 (void) clkdm_for_each(clkdms_setup);
651 mpu_pwrdm = pwrdm_lookup("mpu_pwrdm");
652 if (mpu_pwrdm == NULL) {
653 printk(KERN_ERR "Failed to get mpu_pwrdm\n");
657 _omap_sram_idle = omap_sram_push(omap34xx_cpu_suspend,
658 omap34xx_cpu_suspend_sz);
660 suspend_set_ops(&omap_pm_ops);
662 pm_idle = omap3_pm_idle;
667 free_irq(INT_34XX_PRCM_MPU_IRQ, NULL);
668 list_for_each_entry_safe(pwrst, tmp, &pwrst_list, node) {
669 list_del(&pwrst->node);
675 static void __init configure_vc(void)
677 prm_write_mod_reg((R_SRI2C_SLAVE_ADDR << OMAP3430_SMPS_SA1_SHIFT) |
678 (R_SRI2C_SLAVE_ADDR << OMAP3430_SMPS_SA0_SHIFT),
679 OMAP3430_GR_MOD, OMAP3_PRM_VC_SMPS_SA_OFFSET);
680 prm_write_mod_reg((R_VDD2_SR_CONTROL << OMAP3430_VOLRA1_SHIFT) |
681 (R_VDD1_SR_CONTROL << OMAP3430_VOLRA0_SHIFT),
682 OMAP3430_GR_MOD, OMAP3_PRM_VC_SMPS_VOL_RA_OFFSET);
684 prm_write_mod_reg((OMAP3430_VC_CMD_VAL0_ON <<
685 OMAP3430_VC_CMD_ON_SHIFT) |
686 (OMAP3430_VC_CMD_VAL0_ONLP << OMAP3430_VC_CMD_ONLP_SHIFT) |
687 (OMAP3430_VC_CMD_VAL0_RET << OMAP3430_VC_CMD_RET_SHIFT) |
688 (OMAP3430_VC_CMD_VAL0_OFF << OMAP3430_VC_CMD_OFF_SHIFT),
689 OMAP3430_GR_MOD, OMAP3_PRM_VC_CMD_VAL_0_OFFSET);
691 prm_write_mod_reg((OMAP3430_VC_CMD_VAL1_ON <<
692 OMAP3430_VC_CMD_ON_SHIFT) |
693 (OMAP3430_VC_CMD_VAL1_ONLP << OMAP3430_VC_CMD_ONLP_SHIFT) |
694 (OMAP3430_VC_CMD_VAL1_RET << OMAP3430_VC_CMD_RET_SHIFT) |
695 (OMAP3430_VC_CMD_VAL1_OFF << OMAP3430_VC_CMD_OFF_SHIFT),
696 OMAP3430_GR_MOD, OMAP3_PRM_VC_CMD_VAL_1_OFFSET);
698 prm_write_mod_reg(OMAP3430_CMD1 | OMAP3430_RAV1,
700 OMAP3_PRM_VC_CH_CONF_OFFSET);
702 prm_write_mod_reg(OMAP3430_MCODE_SHIFT | OMAP3430_HSEN | OMAP3430_SREN,
704 OMAP3_PRM_VC_I2C_CFG_OFFSET);
706 /* Setup voltctrl and other setup times */
707 prm_write_mod_reg(OMAP3430_AUTO_RET, OMAP3430_GR_MOD,
708 OMAP3_PRM_VOLTCTRL_OFFSET);
710 prm_write_mod_reg(OMAP3430_CLKSETUP_DURATION, OMAP3430_GR_MOD,
711 OMAP3_PRM_CLKSETUP_OFFSET);
712 prm_write_mod_reg((OMAP3430_VOLTSETUP_TIME2 <<
713 OMAP3430_SETUP_TIME2_SHIFT) |
714 (OMAP3430_VOLTSETUP_TIME1 <<
715 OMAP3430_SETUP_TIME1_SHIFT),
716 OMAP3430_GR_MOD, OMAP3_PRM_VOLTSETUP1_OFFSET);
718 prm_write_mod_reg(OMAP3430_VOLTOFFSET_DURATION, OMAP3430_GR_MOD,
719 OMAP3_PRM_VOLTOFFSET_OFFSET);
720 prm_write_mod_reg(OMAP3430_VOLTSETUP2_DURATION, OMAP3430_GR_MOD,
721 OMAP3_PRM_VOLTSETUP2_OFFSET);
724 static int __init omap3_pm_early_init(void)
726 prm_clear_mod_reg_bits(OMAP3430_OFFMODE_POL, OMAP3430_GR_MOD,
727 OMAP3_PRM_POLCTRL_OFFSET);
734 arch_initcall(omap3_pm_early_init);