diff options
Diffstat (limited to 'arch/arm/cpu/armv7/omap-common/clocks-common.c')
| -rw-r--r-- | arch/arm/cpu/armv7/omap-common/clocks-common.c | 609 | 
1 files changed, 609 insertions, 0 deletions
| diff --git a/arch/arm/cpu/armv7/omap-common/clocks-common.c b/arch/arm/cpu/armv7/omap-common/clocks-common.c new file mode 100644 index 000000000..f64a10bfc --- /dev/null +++ b/arch/arm/cpu/armv7/omap-common/clocks-common.c @@ -0,0 +1,609 @@ +/* + * + * Clock initialization for OMAP4 + * + * (C) Copyright 2010 + * Texas Instruments, <www.ti.com> + * + * Aneesh V <aneesh@ti.com> + * + * Based on previous work by: + *	Santosh Shilimkar <santosh.shilimkar@ti.com> + *	Rajendra Nayak <rnayak@ti.com> + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * 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. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ +#include <common.h> +#include <asm/omap_common.h> +#include <asm/gpio.h> +#include <asm/arch/clocks.h> +#include <asm/arch/sys_proto.h> +#include <asm/utils.h> +#include <asm/omap_gpio.h> + +#ifndef CONFIG_SPL_BUILD +/* + * printing to console doesn't work unless + * this code is executed from SPL + */ +#define printf(fmt, args...) +#define puts(s) +#endif + +static inline u32 __get_sys_clk_index(void) +{ +	u32 ind; +	/* +	 * For ES1 the ROM code calibration of sys clock is not reliable +	 * due to hw issue. So, use hard-coded value. If this value is not +	 * correct for any board over-ride this function in board file +	 * From ES2.0 onwards you will get this information from +	 * CM_SYS_CLKSEL +	 */ +	if (omap_revision() == OMAP4430_ES1_0) +		ind = OMAP_SYS_CLK_IND_38_4_MHZ; +	else { +		/* SYS_CLKSEL - 1 to match the dpll param array indices */ +		ind = (readl(&prcm->cm_sys_clksel) & +			CM_SYS_CLKSEL_SYS_CLKSEL_MASK) - 1; +	} +	return ind; +} + +u32 get_sys_clk_index(void) +	__attribute__ ((weak, alias("__get_sys_clk_index"))); + +u32 get_sys_clk_freq(void) +{ +	u8 index = get_sys_clk_index(); +	return sys_clk_array[index]; +} + +static inline void do_bypass_dpll(u32 *const base) +{ +	struct dpll_regs *dpll_regs = (struct dpll_regs *)base; + +	clrsetbits_le32(&dpll_regs->cm_clkmode_dpll, +			CM_CLKMODE_DPLL_DPLL_EN_MASK, +			DPLL_EN_FAST_RELOCK_BYPASS << +			CM_CLKMODE_DPLL_EN_SHIFT); +} + +static inline void wait_for_bypass(u32 *const base) +{ +	struct dpll_regs *const dpll_regs = (struct dpll_regs *)base; + +	if (!wait_on_value(ST_DPLL_CLK_MASK, 0, &dpll_regs->cm_idlest_dpll, +				LDELAY)) { +		printf("Bypassing DPLL failed %p\n", base); +	} +} + +static inline void do_lock_dpll(u32 *const base) +{ +	struct dpll_regs *const dpll_regs = (struct dpll_regs *)base; + +	clrsetbits_le32(&dpll_regs->cm_clkmode_dpll, +		      CM_CLKMODE_DPLL_DPLL_EN_MASK, +		      DPLL_EN_LOCK << CM_CLKMODE_DPLL_EN_SHIFT); +} + +static inline void wait_for_lock(u32 *const base) +{ +	struct dpll_regs *const dpll_regs = (struct dpll_regs *)base; + +	if (!wait_on_value(ST_DPLL_CLK_MASK, ST_DPLL_CLK_MASK, +		&dpll_regs->cm_idlest_dpll, LDELAY)) { +		printf("DPLL locking failed for %p\n", base); +		hang(); +	} +} + +inline u32 check_for_lock(u32 *const base) +{ +	struct dpll_regs *const dpll_regs = (struct dpll_regs *)base; +	u32 lock = readl(&dpll_regs->cm_idlest_dpll) & ST_DPLL_CLK_MASK; + +	return lock; +} + +static void do_setup_dpll(u32 *const base, const struct dpll_params *params, +				u8 lock, char *dpll) +{ +	u32 temp, M, N; +	struct dpll_regs *const dpll_regs = (struct dpll_regs *)base; + +	temp = readl(&dpll_regs->cm_clksel_dpll); + +	if (check_for_lock(base)) { +		/* +		 * The Dpll has already been locked by rom code using CH. +		 * Check if M,N are matching with Ideal nominal opp values. +		 * If matches, skip the rest otherwise relock. +		 */ +		M = (temp & CM_CLKSEL_DPLL_M_MASK) >> CM_CLKSEL_DPLL_M_SHIFT; +		N = (temp & CM_CLKSEL_DPLL_N_MASK) >> CM_CLKSEL_DPLL_N_SHIFT; +		if ((M != (params->m)) || (N != (params->n))) { +			debug("\n %s Dpll locked, but not for ideal M = %d," +				"N = %d values, current values are M = %d," +				"N= %d" , dpll, params->m, params->n, +				M, N); +		} else { +			/* Dpll locked with ideal values for nominal opps. */ +			debug("\n %s Dpll already locked with ideal" +						"nominal opp values", dpll); +			goto setup_post_dividers; +		} +	} + +	bypass_dpll(base); + +	/* Set M & N */ +	temp &= ~CM_CLKSEL_DPLL_M_MASK; +	temp |= (params->m << CM_CLKSEL_DPLL_M_SHIFT) & CM_CLKSEL_DPLL_M_MASK; + +	temp &= ~CM_CLKSEL_DPLL_N_MASK; +	temp |= (params->n << CM_CLKSEL_DPLL_N_SHIFT) & CM_CLKSEL_DPLL_N_MASK; + +	writel(temp, &dpll_regs->cm_clksel_dpll); + +	/* Lock */ +	if (lock) +		do_lock_dpll(base); + +setup_post_dividers: +	setup_post_dividers(base, params); + +	/* Wait till the DPLL locks */ +	if (lock) +		wait_for_lock(base); +} + +u32 omap_ddr_clk(void) +{ +	u32 ddr_clk, sys_clk_khz, omap_rev, divider; +	const struct dpll_params *core_dpll_params; + +	omap_rev = omap_revision(); +	sys_clk_khz = get_sys_clk_freq() / 1000; + +	core_dpll_params = get_core_dpll_params(); + +	debug("sys_clk %d\n ", sys_clk_khz * 1000); + +	/* Find Core DPLL locked frequency first */ +	ddr_clk = sys_clk_khz * 2 * core_dpll_params->m / +			(core_dpll_params->n + 1); + +	if (omap_rev < OMAP5430_ES1_0) { +		/* +		 * DDR frequency is PHY_ROOT_CLK/2 +		 * PHY_ROOT_CLK = Fdpll/2/M2 +		 */ +		divider = 4; +	} else { +		/* +		 * DDR frequency is PHY_ROOT_CLK +		 * PHY_ROOT_CLK = Fdpll/2/M2 +		 */ +		divider = 2; +	} + +	ddr_clk = ddr_clk / divider / core_dpll_params->m2; +	ddr_clk *= 1000;	/* convert to Hz */ +	debug("ddr_clk %d\n ", ddr_clk); + +	return ddr_clk; +} + +/* + * Lock MPU dpll + * + * Resulting MPU frequencies: + * 4430 ES1.0	: 600 MHz + * 4430 ES2.x	: 792 MHz (OPP Turbo) + * 4460		: 920 MHz (OPP Turbo) - DCC disabled + */ +void configure_mpu_dpll(void) +{ +	const struct dpll_params *params; +	struct dpll_regs *mpu_dpll_regs; +	u32 omap_rev; +	omap_rev = omap_revision(); + +	/* +	 * DCC and clock divider settings for 4460. +	 * DCC is required, if more than a certain frequency is required. +	 * For, 4460 > 1GHZ. +	 *     5430 > 1.4GHZ. +	 */ +	if ((omap_rev >= OMAP4460_ES1_0) && (omap_rev < OMAP5430_ES1_0)) { +		mpu_dpll_regs = +			(struct dpll_regs *)&prcm->cm_clkmode_dpll_mpu; +		bypass_dpll(&prcm->cm_clkmode_dpll_mpu); +		clrbits_le32(&prcm->cm_mpu_mpu_clkctrl, +			MPU_CLKCTRL_CLKSEL_EMIF_DIV_MODE_MASK); +		setbits_le32(&prcm->cm_mpu_mpu_clkctrl, +			MPU_CLKCTRL_CLKSEL_ABE_DIV_MODE_MASK); +		clrbits_le32(&mpu_dpll_regs->cm_clksel_dpll, +			CM_CLKSEL_DCC_EN_MASK); +	} + +	params = get_mpu_dpll_params(); + +	do_setup_dpll(&prcm->cm_clkmode_dpll_mpu, params, DPLL_LOCK, "mpu"); +	debug("MPU DPLL locked\n"); +} + +static void setup_dplls(void) +{ +	u32 sysclk_ind, temp; +	const struct dpll_params *params; +	debug("setup_dplls\n"); + +	sysclk_ind = get_sys_clk_index(); + +	/* CORE dpll */ +	params = get_core_dpll_params();	/* default - safest */ +	/* +	 * Do not lock the core DPLL now. Just set it up. +	 * Core DPLL will be locked after setting up EMIF +	 * using the FREQ_UPDATE method(freq_update_core()) +	 */ +	do_setup_dpll(&prcm->cm_clkmode_dpll_core, params, DPLL_NO_LOCK, +								"core"); +	/* Set the ratios for CORE_CLK, L3_CLK, L4_CLK */ +	temp = (CLKSEL_CORE_X2_DIV_1 << CLKSEL_CORE_SHIFT) | +	    (CLKSEL_L3_CORE_DIV_2 << CLKSEL_L3_SHIFT) | +	    (CLKSEL_L4_L3_DIV_2 << CLKSEL_L4_SHIFT); +	writel(temp, &prcm->cm_clksel_core); +	debug("Core DPLL configured\n"); + +	/* lock PER dpll */ +	params = get_per_dpll_params(); +	do_setup_dpll(&prcm->cm_clkmode_dpll_per, +			params, DPLL_LOCK, "per"); +	debug("PER DPLL locked\n"); + +	/* MPU dpll */ +	configure_mpu_dpll(); +} + +#ifdef CONFIG_SYS_CLOCKS_ENABLE_ALL +static void setup_non_essential_dplls(void) +{ +	u32 sys_clk_khz, abe_ref_clk; +	u32 sysclk_ind, sd_div, num, den; +	const struct dpll_params *params; + +	sysclk_ind = get_sys_clk_index(); +	sys_clk_khz = get_sys_clk_freq() / 1000; + +	/* IVA */ +	clrsetbits_le32(&prcm->cm_bypclk_dpll_iva, +		CM_BYPCLK_DPLL_IVA_CLKSEL_MASK, DPLL_IVA_CLKSEL_CORE_X2_DIV_2); + +	params = get_iva_dpll_params(); +	do_setup_dpll(&prcm->cm_clkmode_dpll_iva, params, DPLL_LOCK, "iva"); + +	/* +	 * USB: +	 * USB dpll is J-type. Need to set DPLL_SD_DIV for jitter correction +	 * DPLL_SD_DIV = CEILING ([DPLL_MULT/(DPLL_DIV+1)]* CLKINP / 250) +	 *      - where CLKINP is sys_clk in MHz +	 * Use CLKINP in KHz and adjust the denominator accordingly so +	 * that we have enough accuracy and at the same time no overflow +	 */ +	params = get_usb_dpll_params(); +	num = params->m * sys_clk_khz; +	den = (params->n + 1) * 250 * 1000; +	num += den - 1; +	sd_div = num / den; +	clrsetbits_le32(&prcm->cm_clksel_dpll_usb, +			CM_CLKSEL_DPLL_DPLL_SD_DIV_MASK, +			sd_div << CM_CLKSEL_DPLL_DPLL_SD_DIV_SHIFT); + +	/* Now setup the dpll with the regular function */ +	do_setup_dpll(&prcm->cm_clkmode_dpll_usb, params, DPLL_LOCK, "usb"); + +	/* Configure ABE dpll */ +	params = get_abe_dpll_params(); +#ifdef CONFIG_SYS_OMAP_ABE_SYSCK +	abe_ref_clk = CM_ABE_PLL_REF_CLKSEL_CLKSEL_SYSCLK; +#else +	abe_ref_clk = CM_ABE_PLL_REF_CLKSEL_CLKSEL_32KCLK; +	/* +	 * We need to enable some additional options to achieve +	 * 196.608MHz from 32768 Hz +	 */ +	setbits_le32(&prcm->cm_clkmode_dpll_abe, +			CM_CLKMODE_DPLL_DRIFTGUARD_EN_MASK| +			CM_CLKMODE_DPLL_RELOCK_RAMP_EN_MASK| +			CM_CLKMODE_DPLL_LPMODE_EN_MASK| +			CM_CLKMODE_DPLL_REGM4XEN_MASK); +	/* Spend 4 REFCLK cycles at each stage */ +	clrsetbits_le32(&prcm->cm_clkmode_dpll_abe, +			CM_CLKMODE_DPLL_RAMP_RATE_MASK, +			1 << CM_CLKMODE_DPLL_RAMP_RATE_SHIFT); +#endif + +	/* Select the right reference clk */ +	clrsetbits_le32(&prcm->cm_abe_pll_ref_clksel, +			CM_ABE_PLL_REF_CLKSEL_CLKSEL_MASK, +			abe_ref_clk << CM_ABE_PLL_REF_CLKSEL_CLKSEL_SHIFT); +	/* Lock the dpll */ +	do_setup_dpll(&prcm->cm_clkmode_dpll_abe, params, DPLL_LOCK, "abe"); +} +#endif + +void do_scale_tps62361(u32 reg, u32 volt_mv) +{ +	u32 temp, step; + +	step = volt_mv - TPS62361_BASE_VOLT_MV; +	step /= 10; + +	/* +	 * Select SET1 in TPS62361: +	 * VSEL1 is grounded on board. So the following selects +	 * VSEL1 = 0 and VSEL0 = 1 +	 */ +	gpio_direction_output(TPS62361_VSEL0_GPIO, 0); +	gpio_set_value(TPS62361_VSEL0_GPIO, 1); + +	temp = TPS62361_I2C_SLAVE_ADDR | +	    (reg << PRM_VC_VAL_BYPASS_REGADDR_SHIFT) | +	    (step << PRM_VC_VAL_BYPASS_DATA_SHIFT) | +	    PRM_VC_VAL_BYPASS_VALID_BIT; +	debug("do_scale_tps62361: volt - %d step - 0x%x\n", volt_mv, step); + +	writel(temp, &prcm->prm_vc_val_bypass); +	if (!wait_on_value(PRM_VC_VAL_BYPASS_VALID_BIT, 0, +				&prcm->prm_vc_val_bypass, LDELAY)) { +		puts("Scaling voltage failed for vdd_mpu from TPS\n"); +	} +} + +void do_scale_vcore(u32 vcore_reg, u32 volt_mv) +{ +	u32 temp, offset_code; +	u32 step = 12660; /* 12.66 mV represented in uV */ +	u32 offset = volt_mv; + +	/* convert to uV for better accuracy in the calculations */ +	offset *= 1000; + +	if (omap_revision() == OMAP4430_ES1_0) +		offset -= PHOENIX_SMPS_BASE_VOLT_STD_MODE_UV; +	else +		offset -= PHOENIX_SMPS_BASE_VOLT_STD_MODE_WITH_OFFSET_UV; + +	offset_code = (offset + step - 1) / step; +	/* The code starts at 1 not 0 */ +	offset_code++; + +	debug("do_scale_vcore: volt - %d offset_code - 0x%x\n", volt_mv, +		offset_code); + +	temp = SMPS_I2C_SLAVE_ADDR | +	    (vcore_reg << PRM_VC_VAL_BYPASS_REGADDR_SHIFT) | +	    (offset_code << PRM_VC_VAL_BYPASS_DATA_SHIFT) | +	    PRM_VC_VAL_BYPASS_VALID_BIT; +	writel(temp, &prcm->prm_vc_val_bypass); +	if (!wait_on_value(PRM_VC_VAL_BYPASS_VALID_BIT, 0, +				&prcm->prm_vc_val_bypass, LDELAY)) { +		printf("Scaling voltage failed for 0x%x\n", vcore_reg); +	} +} + +static inline void enable_clock_domain(u32 *const clkctrl_reg, u32 enable_mode) +{ +	clrsetbits_le32(clkctrl_reg, CD_CLKCTRL_CLKTRCTRL_MASK, +			enable_mode << CD_CLKCTRL_CLKTRCTRL_SHIFT); +	debug("Enable clock domain - %p\n", clkctrl_reg); +} + +static inline void wait_for_clk_enable(u32 *clkctrl_addr) +{ +	u32 clkctrl, idlest = MODULE_CLKCTRL_IDLEST_DISABLED; +	u32 bound = LDELAY; + +	while ((idlest == MODULE_CLKCTRL_IDLEST_DISABLED) || +		(idlest == MODULE_CLKCTRL_IDLEST_TRANSITIONING)) { + +		clkctrl = readl(clkctrl_addr); +		idlest = (clkctrl & MODULE_CLKCTRL_IDLEST_MASK) >> +			 MODULE_CLKCTRL_IDLEST_SHIFT; +		if (--bound == 0) { +			printf("Clock enable failed for 0x%p idlest 0x%x\n", +				clkctrl_addr, clkctrl); +			return; +		} +	} +} + +static inline void enable_clock_module(u32 *const clkctrl_addr, u32 enable_mode, +				u32 wait_for_enable) +{ +	clrsetbits_le32(clkctrl_addr, MODULE_CLKCTRL_MODULEMODE_MASK, +			enable_mode << MODULE_CLKCTRL_MODULEMODE_SHIFT); +	debug("Enable clock module - %p\n", clkctrl_addr); +	if (wait_for_enable) +		wait_for_clk_enable(clkctrl_addr); +} + +void freq_update_core(void) +{ +	u32 freq_config1 = 0; +	const struct dpll_params *core_dpll_params; + +	core_dpll_params = get_core_dpll_params(); +	/* Put EMIF clock domain in sw wakeup mode */ +	enable_clock_domain(&prcm->cm_memif_clkstctrl, +				CD_CLKCTRL_CLKTRCTRL_SW_WKUP); +	wait_for_clk_enable(&prcm->cm_memif_emif_1_clkctrl); +	wait_for_clk_enable(&prcm->cm_memif_emif_2_clkctrl); + +	freq_config1 = SHADOW_FREQ_CONFIG1_FREQ_UPDATE_MASK | +	    SHADOW_FREQ_CONFIG1_DLL_RESET_MASK; + +	freq_config1 |= (DPLL_EN_LOCK << SHADOW_FREQ_CONFIG1_DPLL_EN_SHIFT) & +				SHADOW_FREQ_CONFIG1_DPLL_EN_MASK; + +	freq_config1 |= (core_dpll_params->m2 << +			SHADOW_FREQ_CONFIG1_M2_DIV_SHIFT) & +			SHADOW_FREQ_CONFIG1_M2_DIV_MASK; + +	writel(freq_config1, &prcm->cm_shadow_freq_config1); +	if (!wait_on_value(SHADOW_FREQ_CONFIG1_FREQ_UPDATE_MASK, 0, +				&prcm->cm_shadow_freq_config1, LDELAY)) { +		puts("FREQ UPDATE procedure failed!!"); +		hang(); +	} + +	/* Put EMIF clock domain back in hw auto mode */ +	enable_clock_domain(&prcm->cm_memif_clkstctrl, +				CD_CLKCTRL_CLKTRCTRL_HW_AUTO); +	wait_for_clk_enable(&prcm->cm_memif_emif_1_clkctrl); +	wait_for_clk_enable(&prcm->cm_memif_emif_2_clkctrl); +} + +void bypass_dpll(u32 *const base) +{ +	do_bypass_dpll(base); +	wait_for_bypass(base); +} + +void lock_dpll(u32 *const base) +{ +	do_lock_dpll(base); +	wait_for_lock(base); +} + +void setup_clocks_for_console(void) +{ +	/* Do not add any spl_debug prints in this function */ +	clrsetbits_le32(&prcm->cm_l4per_clkstctrl, CD_CLKCTRL_CLKTRCTRL_MASK, +			CD_CLKCTRL_CLKTRCTRL_SW_WKUP << +			CD_CLKCTRL_CLKTRCTRL_SHIFT); + +	/* Enable all UARTs - console will be on one of them */ +	clrsetbits_le32(&prcm->cm_l4per_uart1_clkctrl, +			MODULE_CLKCTRL_MODULEMODE_MASK, +			MODULE_CLKCTRL_MODULEMODE_SW_EXPLICIT_EN << +			MODULE_CLKCTRL_MODULEMODE_SHIFT); + +	clrsetbits_le32(&prcm->cm_l4per_uart2_clkctrl, +			MODULE_CLKCTRL_MODULEMODE_MASK, +			MODULE_CLKCTRL_MODULEMODE_SW_EXPLICIT_EN << +			MODULE_CLKCTRL_MODULEMODE_SHIFT); + +	clrsetbits_le32(&prcm->cm_l4per_uart3_clkctrl, +			MODULE_CLKCTRL_MODULEMODE_MASK, +			MODULE_CLKCTRL_MODULEMODE_SW_EXPLICIT_EN << +			MODULE_CLKCTRL_MODULEMODE_SHIFT); + +	clrsetbits_le32(&prcm->cm_l4per_uart3_clkctrl, +			MODULE_CLKCTRL_MODULEMODE_MASK, +			MODULE_CLKCTRL_MODULEMODE_SW_EXPLICIT_EN << +			MODULE_CLKCTRL_MODULEMODE_SHIFT); + +	clrsetbits_le32(&prcm->cm_l4per_clkstctrl, CD_CLKCTRL_CLKTRCTRL_MASK, +			CD_CLKCTRL_CLKTRCTRL_HW_AUTO << +			CD_CLKCTRL_CLKTRCTRL_SHIFT); +} + +void setup_sri2c(void) +{ +	u32 sys_clk_khz, cycles_hi, cycles_low, temp; + +	sys_clk_khz = get_sys_clk_freq() / 1000; + +	/* +	 * Setup the dedicated I2C controller for Voltage Control +	 * I2C clk - high period 40% low period 60% +	 */ +	cycles_hi = sys_clk_khz * 4 / PRM_VC_I2C_CHANNEL_FREQ_KHZ / 10; +	cycles_low = sys_clk_khz * 6 / PRM_VC_I2C_CHANNEL_FREQ_KHZ / 10; +	/* values to be set in register - less by 5 & 7 respectively */ +	cycles_hi -= 5; +	cycles_low -= 7; +	temp = (cycles_hi << PRM_VC_CFG_I2C_CLK_SCLH_SHIFT) | +	       (cycles_low << PRM_VC_CFG_I2C_CLK_SCLL_SHIFT); +	writel(temp, &prcm->prm_vc_cfg_i2c_clk); + +	/* Disable high speed mode and all advanced features */ +	writel(0x0, &prcm->prm_vc_cfg_i2c_mode); +} + +void do_enable_clocks(u32 *const *clk_domains, +			    u32 *const *clk_modules_hw_auto, +			    u32 *const *clk_modules_explicit_en, +			    u8 wait_for_enable) +{ +	u32 i, max = 100; + +	/* Put the clock domains in SW_WKUP mode */ +	for (i = 0; (i < max) && clk_domains[i]; i++) { +		enable_clock_domain(clk_domains[i], +				    CD_CLKCTRL_CLKTRCTRL_SW_WKUP); +	} + +	/* Clock modules that need to be put in HW_AUTO */ +	for (i = 0; (i < max) && clk_modules_hw_auto[i]; i++) { +		enable_clock_module(clk_modules_hw_auto[i], +				    MODULE_CLKCTRL_MODULEMODE_HW_AUTO, +				    wait_for_enable); +	}; + +	/* Clock modules that need to be put in SW_EXPLICIT_EN mode */ +	for (i = 0; (i < max) && clk_modules_explicit_en[i]; i++) { +		enable_clock_module(clk_modules_explicit_en[i], +				    MODULE_CLKCTRL_MODULEMODE_SW_EXPLICIT_EN, +				    wait_for_enable); +	}; + +	/* Put the clock domains in HW_AUTO mode now */ +	for (i = 0; (i < max) && clk_domains[i]; i++) { +		enable_clock_domain(clk_domains[i], +				    CD_CLKCTRL_CLKTRCTRL_HW_AUTO); +	} +} + +void prcm_init(void) +{ +	switch (omap_hw_init_context()) { +	case OMAP_INIT_CONTEXT_SPL: +	case OMAP_INIT_CONTEXT_UBOOT_FROM_NOR: +	case OMAP_INIT_CONTEXT_UBOOT_AFTER_CH: +		enable_basic_clocks(); +		scale_vcores(); +		setup_dplls(); +#ifdef CONFIG_SYS_CLOCKS_ENABLE_ALL +		setup_non_essential_dplls(); +		enable_non_essential_clocks(); +#endif +		break; +	default: +		break; +	} + +	if (OMAP_INIT_CONTEXT_SPL != omap_hw_init_context()) +		enable_basic_uboot_clocks(); +} |