Patchwork [U-Boot,15/22] omap4: add clock support

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Submitter Aneesh V
Date Feb. 28, 2011, 11:46 a.m.
Message ID <1298893591-17636-16-git-send-email-aneesh@ti.com>
Download mbox | patch
Permalink /patch/84816/
State Superseded
Delegated to: Sandeep Paulraj
Headers show

Comments

Aneesh V - Feb. 28, 2011, 11:46 a.m.
Add support for:
1. DPLL locking
2. Initialization of clock domains and clock modules

This work draws upon previous work done for x-loader mainly by:
	Santosh Shilimkar <santosh.shilimkar@ti.com>
	Rajendra Nayak <rnayak@ti.com>

Signed-off-by: Aneesh V <aneesh@ti.com>
---
 arch/arm/cpu/armv7/omap4/Makefile           |    1 +
 arch/arm/cpu/armv7/omap4/board.c            |    1 +
 arch/arm/cpu/armv7/omap4/clocks.c           |  717 +++++++++++++++++++++++++++
 arch/arm/include/asm/arch-omap4/clocks.h    |  504 +++++++++++++++++++
 arch/arm/include/asm/arch-omap4/sys_proto.h |    6 +
 arch/arm/include/asm/omap_common.h          |    3 +
 spl/board/ti/sdp4430/Makefile               |    6 +-
 7 files changed, 1237 insertions(+), 1 deletions(-)
 create mode 100644 arch/arm/cpu/armv7/omap4/clocks.c
 create mode 100644 arch/arm/include/asm/arch-omap4/clocks.h

Patch

diff --git a/arch/arm/cpu/armv7/omap4/Makefile b/arch/arm/cpu/armv7/omap4/Makefile
index 987dc9d..6154e86 100644
--- a/arch/arm/cpu/armv7/omap4/Makefile
+++ b/arch/arm/cpu/armv7/omap4/Makefile
@@ -30,6 +30,7 @@  SOBJS	+= lowlevel_init.o
 COBJS	+= board.o
 COBJS	+= mem.o
 COBJS	+= sys_info.o
+COBJS	+= clocks.o
 
 SRCS	:= $(SOBJS:.o=.S) $(COBJS:.o=.c)
 OBJS	:= $(addprefix $(obj),$(COBJS) $(SOBJS))
diff --git a/arch/arm/cpu/armv7/omap4/board.c b/arch/arm/cpu/armv7/omap4/board.c
index 95b6a96..62a59ad 100644
--- a/arch/arm/cpu/armv7/omap4/board.c
+++ b/arch/arm/cpu/armv7/omap4/board.c
@@ -105,6 +105,7 @@  void s_init(void)
 {
 	watchdog_init();
 	set_mux_conf_regs();
+	prcm_init();
 #ifdef CONFIG_PRELOADER
 	preloader_console_init();
 #endif
diff --git a/arch/arm/cpu/armv7/omap4/clocks.c b/arch/arm/cpu/armv7/omap4/clocks.c
new file mode 100644
index 0000000..317f30f
--- /dev/null
+++ b/arch/arm/cpu/armv7/omap4/clocks.c
@@ -0,0 +1,717 @@ 
+/*
+ *
+ * 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/arch/clocks.h>
+#include <asm/arch/sys_proto.h>
+
+#define abs(x) (((x) < 0) ? ((x)*-1) : (x))
+
+static const u32 sys_clk_array[8] = {
+	0,		      /* Uninitialized */
+	12000000,	       /* 12 MHz */
+	13000000,	       /* 13 MHz */
+	16800000,	       /* 16.8 MHz */
+	19200000,	       /* 19.2 MHz */
+	26000000,	       /* 26 MHz */
+	27000000,	       /* 27 MHz */
+	38400000,	       /* 38.4 MHz */
+};
+
+static const struct dpll_params core_dpll_params_opp100 = {
+	0, 0, 1600000, 1, 5, 8, 4, 6, 5
+};
+
+static const struct dpll_params core_dpll_params_opp100_ddr200 = {
+	0, 0, 1600000, 2, 5, 8, 4, 6, 5
+};
+
+static const struct dpll_params core_dpll_params_es1_l3_190 = {
+	0, 0, 1523712, 1, 5, 8, 4, 6, 5
+};
+
+static const struct dpll_params per_dpll_params_opp100 = {
+	0, 0, 1536000, 8, 6, 12, 9, 4, 5
+};
+
+/* TODO - fix MPU mult */
+static const struct dpll_params mpu_dpll_params_600mhz = {
+	0, 0, 1200000, 1, -1, -1, -1, -1, -1
+};
+
+static const struct dpll_params mpu_dpll_params_1000mhz = {
+	0, 0, 2000000, 1, -1, -1, -1, -1, -1
+};
+
+static const struct dpll_params usb_dpll_params = {
+	0, 0, 1920000, 2, -1, -1, -1, -1, -1
+};
+
+static const struct dpll_params iva_dpll_params = {
+	0, 0, 1862000, -1, -1, 4, 7, -1, -1
+};
+
+static const struct dpll_params abe_dpll_params = {
+	0, 0, 196608, 1, 1, -1, -1, -1, -1
+};
+
+static const u32 clk_domains_essential[] = {
+	CM_L4PER_CLKSTCTRL,
+	CM_L3INIT_CLKSTCTRL,
+	CM_MEMIF_CLKSTCTRL,
+	CM_L4CFG_CLKSTCTRL,
+	0
+};
+
+static const u32 clk_domains_non_essential[] = {
+	CM_MPU_M3_CLKSTCTRL,
+	CM_IVAHD_CLKSTCTRL,
+	CM_DSP_CLKSTCTRL,
+	CM_DSS_CLKSTCTRL,
+	CM_SGX_CLKSTCTRL,
+	CM1_ABE_CLKSTCTRL,
+	CM_C2C_CLKSTCTRL,
+	CM_CAM_CLKSTCTRL,
+	CM_DSS_CLKSTCTRL,
+	CM_SDMA_CLKSTCTRL,
+	0
+};
+
+static const u32 clk_modules_hw_auto_essential[] = {
+	CM_WKUP_GPIO1_CLKCTRL,
+	CM_L4PER_GPIO2_CLKCTRL,
+	CM_L4PER_GPIO3_CLKCTRL,
+	CM_L4PER_GPIO4_CLKCTRL,
+	CM_L4PER_GPIO5_CLKCTRL,
+	CM_L4PER_GPIO6_CLKCTRL,
+	CM_MEMIF_EMIF_1_CLKCTRL,
+	CM_MEMIF_EMIF_2_CLKCTRL,
+	CM_L3INIT_HSUSBOTG_CLKCTRL,
+	CM_L3INIT_USBPHY_CLKCTRL,
+	CM_L4CFG_L4_CFG_CLKCTRL,
+	0
+};
+
+static const u32 clk_modules_hw_auto_non_essential[] = {
+	CM_MPU_M3_MPU_M3_CLKCTRL,
+	CM_IVAHD_IVAHD_CLKCTRL,
+	CM_IVAHD_SL2_CLKCTRL,
+	CM_DSP_DSP_CLKCTRL,
+	CM_L3_2_GPMC_CLKCTRL,
+	CM_L3INSTR_L3_3_CLKCTRL,
+	CM_L3INSTR_L3_INSTR_CLKCTRL,
+	CM_L3INSTR_INTRCONN_WP1_CLKCTRL,
+	CM_L3INIT_HSI_CLKCTRL,
+	CM_L3INIT_HSUSBTLL_CLKCTRL,
+	0
+};
+
+static const u32 clk_modules_explicit_en_essential[] = {
+	CM_L4PER_GPTIMER2_CLKCTRL,
+	CM_L3INIT_HSMMC1_CLKCTRL,
+	CM_L3INIT_HSMMC2_CLKCTRL,
+	CM_L4PER_MCSPI1_CLKCTRL,
+	CM_WKUP_GPTIMER1_CLKCTRL,
+	CM_L4PER_I2C1_CLKCTRL,
+	CM_L4PER_I2C2_CLKCTRL,
+	CM_L4PER_I2C3_CLKCTRL,
+	CM_L4PER_I2C4_CLKCTRL,
+	CM_WKUP_WDTIMER2_CLKCTRL,
+	CM_L4PER_UART3_CLKCTRL,
+	0
+};
+
+static const u32 clk_modules_explicit_en_non_essential[] = {
+	CM1_ABE_AESS_CLKCTRL,
+	CM1_ABE_PDM_CLKCTRL,
+	CM1_ABE_DMIC_CLKCTRL,
+	CM1_ABE_MCASP_CLKCTRL,
+	CM1_ABE_MCBSP1_CLKCTRL,
+	CM1_ABE_MCBSP2_CLKCTRL,
+	CM1_ABE_MCBSP3_CLKCTRL,
+	CM1_ABE_SLIMBUS_CLKCTRL,
+	CM1_ABE_TIMER5_CLKCTRL,
+	CM1_ABE_TIMER6_CLKCTRL,
+	CM1_ABE_TIMER7_CLKCTRL,
+	CM1_ABE_TIMER8_CLKCTRL,
+	CM1_ABE_WDT3_CLKCTRL,
+	CM_L4PER_GPTIMER9_CLKCTRL,
+	CM_L4PER_GPTIMER10_CLKCTRL,
+	CM_L4PER_GPTIMER11_CLKCTRL,
+	CM_L4PER_GPTIMER3_CLKCTRL,
+	CM_L4PER_GPTIMER4_CLKCTRL,
+	CM_L4PER_HDQ1W_CLKCTRL,
+	CM_L4PER_MCBSP4_CLKCTRL,
+	CM_L4PER_MCSPI2_CLKCTRL,
+	CM_L4PER_MCSPI3_CLKCTRL,
+	CM_L4PER_MCSPI4_CLKCTRL,
+	CM_L4PER_MMCSD3_CLKCTRL,
+	CM_L4PER_MMCSD4_CLKCTRL,
+	CM_L4PER_MMCSD5_CLKCTRL,
+	CM_L4PER_UART1_CLKCTRL,
+	CM_L4PER_UART2_CLKCTRL,
+	CM_L4PER_UART4_CLKCTRL,
+	CM_WKUP_KEYBOARD_CLKCTRL,
+	CM_WKUP_WDTIMER2_CLKCTRL,
+	CM_CAM_ISS_CLKCTRL,
+	CM_CAM_FDIF_CLKCTRL,
+	CM_DSS_DSS_CLKCTRL,
+	CM_SGX_SGX_CLKCTRL,
+	CM_L3INIT_HSUSBHOST_CLKCTRL,
+	CM_L3INIT_FSUSB_CLKCTRL,
+	0
+};
+
+static u32 get_m_n(u32 target_freq_khz, u32 ref_freq_khz, u32 *m, u32 *n,
+		   u32 tolerance_khz)
+{
+	u32 min_freq = target_freq_khz - tolerance_khz;
+	u32 max_freq = target_freq_khz;
+	u32 freq, freq_old;
+	*n = 1;
+	while (1) {
+		*m = min_freq / ref_freq_khz / 2 * (*n);
+		freq_old = 0;
+		while (1) {
+			freq = ref_freq_khz * 2 * (*m) / (*n);
+			if (abs(target_freq_khz - freq_old) <=
+			    abs(target_freq_khz - freq)) {
+				freq = freq_old;
+				(*m)--;
+				break;
+			}
+			(*m)++;
+			freq_old = freq;
+		}
+		if (freq >= min_freq && freq <= max_freq)
+			break;
+		(*n)++;
+		if ((*n) > OMAP_DPLL_MAX_N + 1)
+			return 1;
+	}
+	(*n)--;
+	return 0;
+}
+
+static u32 __get_syc_clk_freq(void)
+{
+	/*
+	 * 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 (omap4_revision() == OMAP4430_ES1_0)
+		return OMAP_SYS_CLK_FREQ_38_4_MHZ;
+	else {
+		u32 sys_clk_ind = readl(CM_SYS_CLKSEL) &
+				  CM_SYS_CLKSEL_SYS_CLKSEL_MASK;
+		return sys_clk_array[sys_clk_ind];
+	}
+}
+
+static inline void do_bypass_dpll(u32 base)
+{
+	struct dpll_regs *dpll_regs = (struct dpll_regs *)base;
+
+	modify_reg_32(&dpll_regs->cm_clkmode_dpll,
+		      CM_CLKMODE_DPLL_DPLL_EN_SHIFT,
+		      CM_CLKMODE_DPLL_DPLL_EN_MASK, DPLL_EN_FAST_RELOCK_BYPASS);
+}
+
+static inline void wait_for_bypass(u32 base)
+{
+	struct dpll_regs *dpll_regs = (struct dpll_regs *)base;
+
+	while (readl(&dpll_regs->cm_idlest_dpll) & ST_DPLL_CLK_MASK)
+		;
+}
+
+static inline void do_lock_dpll(u32 base)
+{
+	struct dpll_regs *dpll_regs = (struct dpll_regs *)base;
+
+	modify_reg_32(&dpll_regs->cm_clkmode_dpll,
+		      CM_CLKMODE_DPLL_DPLL_EN_SHIFT,
+		      CM_CLKMODE_DPLL_DPLL_EN_MASK, DPLL_EN_LOCK);
+}
+
+static inline void wait_for_lock(u32 base)
+{
+	struct dpll_regs *dpll_regs = (struct dpll_regs *)base;
+
+	while (!(readl(&dpll_regs->cm_idlest_dpll) & ST_DPLL_CLK_MASK))
+		;
+}
+
+static void do_setup_dpll(u32 base, const struct dpll_params *params,
+			  u32 ref_clk_khz, u32 tolerance, u8 lock)
+{
+	u32 temp, m, n;
+	struct dpll_regs *dpll_regs = (struct dpll_regs *)base;
+
+	do_bypass_dpll(base);
+
+	/* Get the M & N values */
+	m = params->m;
+	n = params->n;
+	/* if m & n are not specified calculate them */
+	if (!(m && n)) {
+		if (get_m_n(params->locked_freq_khz, ref_clk_khz,
+			    &m, &n, tolerance)) {
+			/* DPLL locking is critical if it fails just hang */
+			for (;;)
+				;
+			return;
+		}
+	}
+
+	/* Wait till the DPLL is in BYPASS */
+	wait_for_bypass(base);
+
+	/* Set M & N */
+	temp = readl(&dpll_regs->cm_clksel_dpll);
+	set_bit_field(temp, CM_CLKSEL_DPLL_M_SHIFT, CM_CLKSEL_DPLL_M_MASK, m);
+	set_bit_field(temp, CM_CLKSEL_DPLL_N_SHIFT, CM_CLKSEL_DPLL_N_MASK, n);
+	writel(temp, &dpll_regs->cm_clksel_dpll);
+
+	/* Lock */
+	if (lock)
+		do_lock_dpll(base);
+
+	/* Setup post-dividers */
+	if (params->m2 >= 0)
+		writel(params->m2, &dpll_regs->cm_div_m2_dpll);
+	if (params->m3 >= 0)
+		writel(params->m3, &dpll_regs->cm_div_m3_dpll);
+	if (params->m4 >= 0)
+		writel(params->m4, &dpll_regs->cm_div_m4_dpll);
+	if (params->m5 >= 0)
+		writel(params->m5, &dpll_regs->cm_div_m5_dpll);
+	if (params->m6 >= 0)
+		writel(params->m6, &dpll_regs->cm_div_m6_dpll);
+	if (params->m7 >= 0)
+		writel(params->m7, &dpll_regs->cm_div_m7_dpll);
+
+	/* Wait till the DPLL locks */
+	if (lock)
+		wait_for_lock(base);
+}
+
+const struct dpll_params *get_core_dpll_params(void)
+{
+	switch (omap4_revision()) {
+	case OMAP4430_ES1_0:
+		return &core_dpll_params_es1_l3_190;
+	case OMAP4430_ES2_0:
+	case OMAP4430_SILICON_ID_INVALID:
+		return &core_dpll_params_opp100_ddr200; /* safest */
+	case OMAP4430_ES2_1:
+	case OMAP4430_ES2_2:
+		return &core_dpll_params_opp100;
+	default:
+		return NULL;
+	}
+}
+
+u32 omap4_ddr_clk(void)
+{
+	u32 ddr_clk;
+	const struct dpll_params *core_dpll_params;
+
+	core_dpll_params = get_core_dpll_params();
+	/*
+	 * DDR frequency is PHY_ROOT_CLK/2
+	 * PHY_ROOT_CLK = Fdpll/2/M2
+	 */
+	ddr_clk = core_dpll_params->locked_freq_khz / 4 / core_dpll_params->m2;
+	ddr_clk *= 1000;	/* convert to Hz */
+	return ddr_clk;
+}
+
+static void setup_dplls(void)
+{
+	u32 sys_clk_khz, temp;
+	const struct dpll_params *params;
+
+	sys_clk_khz = get_syc_clk_freq() / 1000;
+
+	/* 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(CM_CLKMODE_DPLL_CORE, params, sys_clk_khz,
+		      DPLL_LOCKED_FREQ_TOLERANCE_0, CONFIGURE_NO_LOCK);
+	/* 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, CM_CLKSEL_CORE);
+
+	/* lock PER dpll */
+	do_setup_dpll(CM_CLKMODE_DPLL_PER, &per_dpll_params_opp100, sys_clk_khz,
+		      DPLL_LOCKED_FREQ_TOLERANCE_0, CONFIGURE_AND_LOCK);
+
+	/* MPU dpll */
+	if (omap4_revision() == OMAP4430_ES1_0)
+		params = &mpu_dpll_params_600mhz;
+	else
+		params = &mpu_dpll_params_1000mhz;
+	do_setup_dpll(CM_CLKMODE_DPLL_MPU, params, sys_clk_khz,
+		      DPLL_LOCKED_FREQ_TOLERANCE_0, CONFIGURE_AND_LOCK);
+}
+
+static void setup_non_essential_dplls(void)
+{
+	u32 sys_clk_khz, temp, abe_ref_clk;
+	u32 m, n, sd_div, num, den;
+	struct dpll_params tmp_params;
+
+	sys_clk_khz = get_syc_clk_freq() / 1000;
+
+	/* IVA */
+	do_setup_dpll(CM_CLKMODE_DPLL_IVA, &iva_dpll_params, sys_clk_khz,
+		      DPLL_LOCKED_FREQ_TOLERANCE_500_KHZ, CONFIGURE_AND_LOCK);
+
+	/* USB */
+	tmp_params = usb_dpll_params;
+	get_m_n(tmp_params.locked_freq_khz, sys_clk_khz, &m, &n,
+		DPLL_LOCKED_FREQ_TOLERANCE_0);
+	/*
+	 * 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
+	 */
+	num = m * sys_clk_khz;
+	den = (n + 1) * 250 * 1000;
+	num += den - 1;
+	sd_div = num / den;
+	temp = readl(CM_CLKSEL_DPLL_USB);
+	set_bit_field(temp, CM_CLKSEL_DPLL_DPLL_SD_DIV_SHIFT,
+		      CM_CLKSEL_DPLL_DPLL_SD_DIV_MASK, sd_div);
+	writel(temp, CM_CLKSEL_DPLL_USB);
+	/* Now setup the dpll with the regular function */
+	tmp_params.m = m;
+	tmp_params.n = n;
+	do_setup_dpll(CM_CLKMODE_DPLL_USB, &tmp_params, sys_clk_khz,
+		      DPLL_LOCKED_FREQ_TOLERANCE_0, CONFIGURE_AND_LOCK);
+
+	/* ABE dpll */
+	tmp_params = abe_dpll_params;
+#ifdef CONFIG_SYS_OMAP4_ABE_SYSCK
+	abe_ref_clk = sys_clk_khz;
+#else
+	/* Enable REGM4XEN to achieve 196.608MHz from 32768 Hz */
+	writel(readl(CM_CLKMODE_DPLL_ABE) | CM_CLKMODE_DPLL_DPLL_REGM4XEN_MASK,
+		CM_CLKMODE_DPLL_ABE);
+
+	/*
+	 * Converting the input clock 32768 Hz to KHz would result in accuracy
+	 * loss. Instead make both target frequency and reference clock to be
+	 * in terms of Hz.
+	 *
+	 * Also, REGM4XEN is enabled so there is an additional
+	 * multiplier of 4 for M. So adjust for this while passing target
+	 * frequency to get_m_n()
+	 */
+	tmp_params.locked_freq_khz = tmp_params.locked_freq_khz * 1000 / 4;
+	abe_ref_clk = OMAP_32K_CLK_FREQ;
+#endif
+	temp = (abe_ref_clk == OMAP_32K_CLK_FREQ) ?
+			CM_ABE_PLL_REF_CLKSEL_CLKSEL_32KCLK :
+			CM_ABE_PLL_REF_CLKSEL_CLKSEL_SYSCLK;
+	/* Select the right reference clk */
+	modify_reg_32(CM_ABE_PLL_REF_CLKSEL,
+			CM_ABE_PLL_REF_CLKSEL_CLKSEL_SHIFT,
+			CM_ABE_PLL_REF_CLKSEL_CLKSEL_MASK,
+			temp);
+	/* Lock the dpll */
+	do_setup_dpll(CM_CLKMODE_DPLL_ABE, &tmp_params, abe_ref_clk,
+		      DPLL_LOCKED_FREQ_TOLERANCE_0, CONFIGURE_AND_LOCK);
+}
+
+static void do_scale_vcore(u32 vcore_reg, u32 volt)
+{
+	u32 temp;
+
+	temp = SMPS_I2C_SLAVE_ADDR |
+	    (vcore_reg << PRM_VC_VAL_BYPASS_REGADDR_SHIFT) |
+	    (volt << PRM_VC_VAL_BYPASS_DATA_SHIFT) |
+	    PRM_VC_VAL_BYPASS_VALID_BIT;
+	writel(temp, PRM_VC_VAL_BYPASS);
+	while (readl(PRM_VC_VAL_BYPASS) & PRM_VC_VAL_BYPASS_VALID_BIT)
+		;
+}
+
+static void scale_vcores(void)
+{
+	u32 volt, sys_clk_khz, cycles_hi, cycles_low, temp;
+	u32 omap4_rev = omap4_revision();
+
+	sys_clk_khz = get_syc_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, PRM_VC_CFG_I2C_CLK);
+
+	/* Disable high speed mode and all advanced features */
+	writel(0x0, PRM_VC_CFG_I2C_MODE);
+
+	/* VCORE 1 */
+	if ((omap4_rev == OMAP4430_ES2_0) || (omap4_rev == OMAP4430_ES2_1))
+		volt = SMPS_VOLT_1_3500_V;
+	else
+		volt = SMPS_VOLT_1_5000_V;
+	do_scale_vcore(SMPS_REG_ADDR_VCORE1, volt);
+
+	/* VCORE 2 */
+	if ((omap4_rev == OMAP4430_ES2_0) || (omap4_rev == OMAP4430_ES2_1))
+		volt = SMPS_VOLT_1_1000_V;
+	else
+		volt = SMPS_VOLT_1_2000_V;
+	do_scale_vcore(SMPS_REG_ADDR_VCORE2, volt);
+
+	/* VCORE 3 */
+	if (omap4_rev == OMAP4430_ES2_0)
+		volt = SMPS_VOLT_1_1000_V;
+	else if (omap4_rev == OMAP4430_ES2_1)
+		volt = SMPS_VOLT_1_1125_V;
+	else
+		volt = SMPS_VOLT_1_2000_V;
+
+	do_scale_vcore(SMPS_REG_ADDR_VCORE3, volt);
+}
+
+static void enable_clock_domain(u32 clkctrl_reg, u32 enable_mode)
+{
+	modify_reg_32(clkctrl_reg, CD_CLKCTRL_CLKTRCTRL_SHIFT,
+		      CD_CLKCTRL_CLKTRCTRL_MASK, enable_mode);
+}
+
+static inline void wait_for_clk_enable(u32 clkctrl_addr)
+{
+	u32 idlest = MODULE_CLKCTRL_IDLEST_DISABLED;
+
+	while ((idlest == MODULE_CLKCTRL_IDLEST_DISABLED) ||
+	       (idlest == MODULE_CLKCTRL_IDLEST_TRANSITIONING)) {
+		idlest = readl(clkctrl_addr);
+		idlest = get_bit_field(idlest, MODULE_CLKCTRL_IDLEST_SHIFT,
+				       MODULE_CLKCTRL_IDLEST_MASK);
+	}
+}
+
+static void enable_clock_module(u32 clkctrl_addr, u32 enable_mode,
+				u32 wait_for_enable)
+{
+	modify_reg_32(clkctrl_addr, MODULE_CLKCTRL_MODULEMODE_SHIFT,
+			MODULE_CLKCTRL_MODULEMODE_MASK, enable_mode);
+	if (wait_for_enable)
+		wait_for_clk_enable(clkctrl_addr);
+}
+
+/*
+ * Enable a set of clock domains and clock modules associated with them
+ */
+static void enable_clocks(const u32 *clock_domains,
+			  const u32 *clock_modules_hw_auto,
+			  const u32 *clock_modules_explicit_en,
+			  u32 wait_for_enable)
+{
+	int i = 0, max = 100;
+	/* Put the clock domains in SW_WKUP mode */
+	for (i = 0; (i < max) && clock_domains[i]; i++) {
+		enable_clock_domain(clock_domains[i],
+				    CD_CLKCTRL_CLKTRCTRL_SW_WKUP);
+	}
+
+	/* Clock modules that need to be put in HW_AUTO */
+	for (i = 0; (i < max) && clock_modules_hw_auto[i]; i++) {
+		enable_clock_module(clock_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) && clock_modules_explicit_en[i]; i++) {
+		enable_clock_module(clock_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) && clock_domains[i]; i++) {
+		enable_clock_domain(clock_domains[i],
+				    CD_CLKCTRL_CLKTRCTRL_HW_AUTO);
+	}
+}
+
+/*
+ * Enable essential clock domains, modules and
+ * do some additional special settings needed
+ */
+static void enable_basic_clocks(void)
+{
+	/* Enable optional additional functional clock for GPIO4 */
+	writel(readl(CM_L4PER_GPIO4_CLKCTRL) | GPIO4_CLKCTRL_OPTFCLKEN_SHIFT,
+	       CM_L4PER_GPIO4_CLKCTRL);
+
+	/* Enable 96 MHz clock for MMC1 & MMC2 */
+	writel(readl(CM_L3INIT_HSMMC1_CLKCTRL) | HSMMC_CLKCTRL_CLKSEL_SHIFT,
+	       CM_L3INIT_HSMMC1_CLKCTRL);
+	writel(readl(CM_L3INIT_HSMMC2_CLKCTRL) | HSMMC_CLKCTRL_CLKSEL_SHIFT,
+	       CM_L3INIT_HSMMC2_CLKCTRL);
+
+	/* Select 32KHz clock as the source of GPTIMER1 */
+	writel(readl(CM_WKUP_GPTIMER1_CLKCTRL) | GPTIMER1_CLKCTRL_CLKSEL_SHIFT,
+	       CM_WKUP_GPTIMER1_CLKCTRL);
+
+	/* Enable optional 48M functional clock for USB  PHY */
+	writel(readl(CM_L3INIT_USBPHY_CLKCTRL) |
+	       USBPHY_CLKCTRL_OPTFCLKEN_PHY_48M_MASK, CM_L3INIT_USBPHY_CLKCTRL);
+
+	/* Enable all essential clock domains and modules */
+	enable_clocks(clk_domains_essential,
+		      clk_modules_hw_auto_essential,
+		      clk_modules_explicit_en_essential, 1);
+}
+
+/*
+ * Enable non-essential clock domains, modules and
+ * do some additional special settings needed
+ */
+static void enable_non_essential_clocks(void)
+{
+	u32 tmp;
+	/* Enable optional functional clock for ISS */
+	writel(readl(CM_CAM_ISS_CLKCTRL) | ISS_CLKCTRL_OPTFCLKEN_SHIFT,
+	       CM_CAM_ISS_CLKCTRL);
+
+	/* Enable all optional functional clocks of DSS */
+	writel(readl(CM_DSS_DSS_CLKCTRL) | DSS_CLKCTRL_OPTFCLKEN_MASK,
+	       CM_DSS_DSS_CLKCTRL);
+
+	/* Enable all non-essential clock domains and modules */
+	enable_clocks(clk_domains_non_essential,
+		      clk_modules_hw_auto_non_essential,
+		      clk_modules_explicit_en_non_essential, 0);
+
+	/* Put camera module in no sleep mode */
+	tmp = readl(CM_CAM_CLKSTCTRL);
+	set_bit_field(tmp, MODULE_CLKCTRL_MODULEMODE_SHIFT,
+		      MODULE_CLKCTRL_MODULEMODE_MASK,
+		      CD_CLKCTRL_CLKTRCTRL_NO_SLEEP);
+	writel(tmp, CM_CAM_CLKSTCTRL);
+}
+
+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(CM_MEMIF_CLKSTCTRL, CD_CLKCTRL_CLKTRCTRL_SW_WKUP);
+	wait_for_clk_enable(CM_MEMIF_EMIF_1_CLKCTRL);
+	wait_for_clk_enable(CM_MEMIF_EMIF_2_CLKCTRL);
+
+	freq_config1 = SHADOW_FREQ_CONFIG1_FREQ_UPDATE_MASK |
+	    SHADOW_FREQ_CONFIG1_DLL_RESET_MASK;
+
+	set_bit_field(freq_config1, SHADOW_FREQ_CONFIG1_DPLL_EN_SHIFT,
+		      SHADOW_FREQ_CONFIG1_DPLL_EN_MASK, DPLL_EN_LOCK);
+
+	set_bit_field(freq_config1, SHADOW_FREQ_CONFIG1_M2_DIV_SHIFT,
+		      SHADOW_FREQ_CONFIG1_M2_DIV_MASK, core_dpll_params->m2);
+
+	writel(freq_config1, CM_SHADOW_FREQ_CONFIG1);
+	while (readl(CM_SHADOW_FREQ_CONFIG1) &
+		SHADOW_FREQ_CONFIG1_FREQ_UPDATE_MASK)
+		;
+
+	/* Put EMIF clock domain back in hw auto mode */
+	enable_clock_domain(CM_MEMIF_CLKSTCTRL, CD_CLKCTRL_CLKTRCTRL_HW_AUTO);
+	wait_for_clk_enable(CM_MEMIF_EMIF_1_CLKCTRL);
+	wait_for_clk_enable(CM_MEMIF_EMIF_2_CLKCTRL);
+}
+
+void bypass_dpll(u32 base)
+{
+	do_bypass_dpll(base);
+	wait_for_bypass(base);
+}
+
+void lock_dpll(u32 base)
+{
+	do_lock_dpll(base);
+	wait_for_lock(base);
+}
+
+u32 get_syc_clk_freq(void)
+	__attribute__ ((weak, alias("__get_syc_clk_freq")));
+
+void prcm_init(void)
+{
+	switch (omap4_hw_init_context()) {
+	case OMAP_INIT_CONTEXT_SPL:
+		scale_vcores();
+		setup_dplls();
+		enable_basic_clocks();
+		break;
+	case OMAP_INIT_CONTEXT_UBOOT_LOADED_BY_SPL:
+		setup_non_essential_dplls();
+		enable_non_essential_clocks();
+		break;
+	case OMAP_INIT_CONTEXT_XIP_UBOOT:
+	case OMAP_INIT_CONTEXT_UBOOT_LOADED_BY_CH:
+		scale_vcores();
+		setup_dplls();
+		enable_basic_clocks();
+		setup_non_essential_dplls();
+		enable_non_essential_clocks();
+		break;
+	}
+}
diff --git a/arch/arm/include/asm/arch-omap4/clocks.h b/arch/arm/include/asm/arch-omap4/clocks.h
new file mode 100644
index 0000000..fdbe632
--- /dev/null
+++ b/arch/arm/include/asm/arch-omap4/clocks.h
@@ -0,0 +1,504 @@ 
+/*
+ * (C) Copyright 2010
+ * Texas Instruments, <www.ti.com>
+ *
+ * Aneesh V <aneesh@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
+ */
+#ifndef _CLOCKS_OMAP4_H_
+#define _CLOCKS_OMAP4_H_
+#include <common.h>
+
+#define CM_CLKMODE_DPLL_CORE		(OMAP44XX_L4_CORE_BASE + 0x4120)
+#define CM_CLKMODE_DPLL_PER		(OMAP44XX_L4_CORE_BASE + 0x8140)
+#define CM_CLKMODE_DPLL_MPU		(OMAP44XX_L4_CORE_BASE + 0x4160)
+#define CM_CLKSEL_CORE			(OMAP44XX_L4_CORE_BASE + 0x4100)
+
+/* PRM.CKGEN module registers */
+#define CM_ABE_PLL_REF_CLKSEL		(OMAP44XX_L4_WKUP_BASE + 0x610C)
+#define CM_SYS_CLKSEL			(OMAP44XX_L4_WKUP_BASE + 0x6110)
+
+/* PRM.WKUP_CM module registers */
+#define CM_WKUP_CLKSTCTRL		(OMAP44XX_L4_WKUP_BASE + 0x7800)
+#define CM_WKUP_L4WKUP_CLKCTRL		(OMAP44XX_L4_WKUP_BASE + 0x7820)
+#define CM_WKUP_WDTIMER1_CLKCTRL		(OMAP44XX_L4_WKUP_BASE + 0x7828)
+#define CM_WKUP_WDTIMER2_CLKCTRL		(OMAP44XX_L4_WKUP_BASE + 0x7830)
+#define CM_WKUP_GPIO1_CLKCTRL		(OMAP44XX_L4_WKUP_BASE + 0x7838)
+#define CM_WKUP_GPTIMER1_CLKCTRL	(OMAP44XX_L4_WKUP_BASE + 0x7840)
+#define CM_WKUP_GPTIMER12_CLKCTRL		(OMAP44XX_L4_WKUP_BASE + 0x7848)
+#define CM_WKUP_SYNCTIMER_CLKCTRL	(OMAP44XX_L4_WKUP_BASE + 0x7850)
+#define CM_WKUP_USIM_CLKCTRL		(OMAP44XX_L4_WKUP_BASE + 0x7858)
+#define CM_WKUP_SARRAM_CLKCTRL		(OMAP44XX_L4_WKUP_BASE + 0x7860)
+#define CM_WKUP_KEYBOARD_CLKCTRL	(OMAP44XX_L4_WKUP_BASE + 0x7878)
+#define CM_WKUP_RTC_CLKCTRL		(OMAP44XX_L4_WKUP_BASE + 0x7880)
+#define CM_WKUP_BANDGAP_CLKCTRL		(OMAP44XX_L4_WKUP_BASE + 0x7888)
+
+/* DEVICE_PRM Registers */
+#define PRM_VC_VAL_BYPASS		(OMAP44XX_L4_WKUP_BASE + 0x7BA0)
+#define PRM_VC_CFG_CHANNEL		(OMAP44XX_L4_WKUP_BASE + 0x7BA4)
+#define PRM_VC_CFG_I2C_MODE		(OMAP44XX_L4_WKUP_BASE + 0x7BA8)
+#define PRM_VC_CFG_I2C_CLK		(OMAP44XX_L4_WKUP_BASE + 0x7BAC)
+
+/* CM1.CKGEN module registers */
+#define CM_CLKSEL_CORE			(OMAP44XX_L4_CORE_BASE + 0x4100)
+#define CM_CLKSEL_ABE			(OMAP44XX_L4_CORE_BASE + 0x4108)
+#define CM_DLL_CTRL			(OMAP44XX_L4_CORE_BASE + 0x4110)
+#define CM_CLKMODE_DPLL_CORE		(OMAP44XX_L4_CORE_BASE + 0x4120)
+#define CM_IDLEST_DPLL_CORE		(OMAP44XX_L4_CORE_BASE + 0x4124)
+#define CM_AUTOIDLE_DPLL_CORE		(OMAP44XX_L4_CORE_BASE + 0x4128)
+#define CM_CLKSEL_DPLL_CORE		(OMAP44XX_L4_CORE_BASE + 0x412c)
+#define CM_DIV_M2_DPLL_CORE		(OMAP44XX_L4_CORE_BASE + 0x4130)
+#define CM_DIV_M3_DPLL_CORE		(OMAP44XX_L4_CORE_BASE + 0x4134)
+#define CM_DIV_M4_DPLL_CORE		(OMAP44XX_L4_CORE_BASE + 0x4138)
+#define CM_DIV_M5_DPLL_CORE		(OMAP44XX_L4_CORE_BASE + 0x413c)
+#define CM_DIV_M6_DPLL_CORE		(OMAP44XX_L4_CORE_BASE + 0x4140)
+#define CM_DIV_M7_DPLL_CORE		(OMAP44XX_L4_CORE_BASE + 0x4144)
+#define CM_SSC_DELTAMSTEP_DPLL_CORE	(OMAP44XX_L4_CORE_BASE + 0x4148)
+#define CM_SSC_MODFREQDIV_DPLL_CORE	(OMAP44XX_L4_CORE_BASE + 0x414c)
+#define CM_EMU_OVERRIDE_DPLL_CORE	(OMAP44XX_L4_CORE_BASE + 0x4150)
+#define CM_CLKMODE_DPLL_MPU		(OMAP44XX_L4_CORE_BASE + 0x4160)
+#define CM_IDLEST_DPLL_MPU		(OMAP44XX_L4_CORE_BASE + 0x4164)
+#define CM_AUTOIDLE_DPLL_MPU		(OMAP44XX_L4_CORE_BASE + 0x4168)
+#define CM_CLKSEL_DPLL_MPU		(OMAP44XX_L4_CORE_BASE + 0x416c)
+#define CM_DIV_M2_DPLL_MPU		(OMAP44XX_L4_CORE_BASE + 0x4170)
+#define CM_SSC_DELTAMSTEP_DPLL_MPU	(OMAP44XX_L4_CORE_BASE + 0x4188)
+#define CM_SSC_MODFREQDIV_DPLL_MPU	(OMAP44XX_L4_CORE_BASE + 0x418c)
+#define CM_BYPCLK_DPLL_MPU		(OMAP44XX_L4_CORE_BASE + 0x419c)
+#define CM_CLKMODE_DPLL_IVA		(OMAP44XX_L4_CORE_BASE + 0x41a0)
+#define CM_IDLEST_DPLL_IVA		(OMAP44XX_L4_CORE_BASE + 0x41a4)
+#define CM_AUTOIDLE_DPLL_IVA		(OMAP44XX_L4_CORE_BASE + 0x41a8)
+#define CM_CLKSEL_DPLL_IVA		(OMAP44XX_L4_CORE_BASE + 0x41ac)
+#define CM_DIV_M4_DPLL_IVA		(OMAP44XX_L4_CORE_BASE + 0x41b8)
+#define CM_DIV_M5_DPLL_IVA		(OMAP44XX_L4_CORE_BASE + 0x41bc)
+#define CM_SSC_DELTAMSTEP_DPLL_IVA	(OMAP44XX_L4_CORE_BASE + 0x41c8)
+#define CM_SSC_MODFREQDIV_DPLL_IVA	(OMAP44XX_L4_CORE_BASE + 0x41cc)
+#define CM_BYPCLK_DPLL_IVA		(OMAP44XX_L4_CORE_BASE + 0x41dc)
+#define CM_CLKMODE_DPLL_ABE		(OMAP44XX_L4_CORE_BASE + 0x41e0)
+#define CM_IDLEST_DPLL_ABE		(OMAP44XX_L4_CORE_BASE + 0x41e4)
+#define CM_AUTOIDLE_DPLL_ABE		(OMAP44XX_L4_CORE_BASE + 0x41e8)
+#define CM_CLKSEL_DPLL_ABE		(OMAP44XX_L4_CORE_BASE + 0x41ec)
+#define CM_DIV_M2_DPLL_ABE		(OMAP44XX_L4_CORE_BASE + 0x41f0)
+#define CM_DIV_M3_DPLL_ABE		(OMAP44XX_L4_CORE_BASE + 0x41f4)
+#define CM_SSC_DELTAMSTEP_DPLL_ABE	(OMAP44XX_L4_CORE_BASE + 0x4208)
+#define CM_SSC_MODFREQDIV_DPLL_ABE	(OMAP44XX_L4_CORE_BASE + 0x420c)
+#define CM_CLKMODE_DPLL_DDRPHY		(OMAP44XX_L4_CORE_BASE + 0x4220)
+#define CM_IDLEST_DPLL_DDRPHY		(OMAP44XX_L4_CORE_BASE + 0x4224)
+#define CM_AUTOIDLE_DPLL_DDRPHY		(OMAP44XX_L4_CORE_BASE + 0x4228)
+#define CM_CLKSEL_DPLL_DDRPHY		(OMAP44XX_L4_CORE_BASE + 0x422c)
+#define CM_DIV_M2_DPLL_DDRPHY		(OMAP44XX_L4_CORE_BASE + 0x4230)
+#define CM_DIV_M4_DPLL_DDRPHY		(OMAP44XX_L4_CORE_BASE + 0x4238)
+#define CM_DIV_M5_DPLL_DDRPHY		(OMAP44XX_L4_CORE_BASE + 0x423c)
+#define CM_DIV_M6_DPLL_DDRPHY		(OMAP44XX_L4_CORE_BASE + 0x4240)
+#define CM_SSC_DELTAMSTEP_DPLL_DDRPHY	(OMAP44XX_L4_CORE_BASE + 0x4248)
+#define CM_SHADOW_FREQ_CONFIG1		(OMAP44XX_L4_CORE_BASE + 0x4260)
+
+/* CM1.ABE register offsets */
+#define CM1_ABE_CLKSTCTRL		(OMAP44XX_L4_CORE_BASE + 0x4500)
+#define CM1_ABE_L4ABE_CLKCTRL		(OMAP44XX_L4_CORE_BASE + 0x4520)
+#define CM1_ABE_AESS_CLKCTRL		(OMAP44XX_L4_CORE_BASE + 0x4528)
+#define CM1_ABE_PDM_CLKCTRL		(OMAP44XX_L4_CORE_BASE + 0x4530)
+#define CM1_ABE_DMIC_CLKCTRL		(OMAP44XX_L4_CORE_BASE + 0x4538)
+#define CM1_ABE_MCASP_CLKCTRL		(OMAP44XX_L4_CORE_BASE + 0x4540)
+#define CM1_ABE_MCBSP1_CLKCTRL		(OMAP44XX_L4_CORE_BASE + 0x4548)
+#define CM1_ABE_MCBSP2_CLKCTRL		(OMAP44XX_L4_CORE_BASE + 0x4550)
+#define CM1_ABE_MCBSP3_CLKCTRL		(OMAP44XX_L4_CORE_BASE + 0x4558)
+#define CM1_ABE_SLIMBUS_CLKCTRL		(OMAP44XX_L4_CORE_BASE + 0x4560)
+#define CM1_ABE_TIMER5_CLKCTRL		(OMAP44XX_L4_CORE_BASE + 0x4568)
+#define CM1_ABE_TIMER6_CLKCTRL		(OMAP44XX_L4_CORE_BASE + 0x4570)
+#define CM1_ABE_TIMER7_CLKCTRL		(OMAP44XX_L4_CORE_BASE + 0x4578)
+#define CM1_ABE_TIMER8_CLKCTRL		(OMAP44XX_L4_CORE_BASE + 0x4580)
+#define CM1_ABE_WDT3_CLKCTRL		(OMAP44XX_L4_CORE_BASE + 0x4588)
+
+/* CM1.DSP register offsets */
+#define CM_DSP_CLKSTCTRL			(OMAP44XX_L4_CORE_BASE + 0x4400)
+#define	CM_DSP_DSP_CLKCTRL			(OMAP44XX_L4_CORE_BASE + 0x4420)
+
+/* CM2.CKGEN module registers */
+#define CM_CLKSEL_MPU_M3_ISS_ROOT	(OMAP44XX_L4_CORE_BASE + 0x8100)
+#define CM_CLKSEL_USB_60MHz		(OMAP44XX_L4_CORE_BASE + 0x8104)
+#define CM_SCALE_FCLK			(OMAP44XX_L4_CORE_BASE + 0x8108)
+#define CM_CORE_DVFS_PERF1		(OMAP44XX_L4_CORE_BASE + 0x8110)
+#define CM_CORE_DVFS_PERF2		(OMAP44XX_L4_CORE_BASE + 0x8114)
+#define CM_CORE_DVFS_PERF3		(OMAP44XX_L4_CORE_BASE + 0x8118)
+#define CM_CORE_DVFS_PERF4		(OMAP44XX_L4_CORE_BASE + 0x811c)
+#define CM_CORE_DVFS_CURRENT		(OMAP44XX_L4_CORE_BASE + 0x8124)
+#define CM_IVA_DVFS_PERF_TESLA		(OMAP44XX_L4_CORE_BASE + 0x8128)
+#define CM_IVA_DVFS_PERF_IVAHD		(OMAP44XX_L4_CORE_BASE + 0x812c)
+#define CM_IVA_DVFS_PERF_ABE		(OMAP44XX_L4_CORE_BASE + 0x8130)
+#define CM_IVA_DVFS_CURRENT		(OMAP44XX_L4_CORE_BASE + 0x8138)
+#define CM_CLKMODE_DPLL_PER		(OMAP44XX_L4_CORE_BASE + 0x8140)
+#define CM_IDLEST_DPLL_PER		(OMAP44XX_L4_CORE_BASE + 0x8144)
+#define CM_AUTOIDLE_DPLL_PER		(OMAP44XX_L4_CORE_BASE + 0x8148)
+#define CM_CLKSEL_DPLL_PER		(OMAP44XX_L4_CORE_BASE + 0x814c)
+#define CM_DIV_M2_DPLL_PER		(OMAP44XX_L4_CORE_BASE + 0x8150)
+#define CM_DIV_M3_DPLL_PER		(OMAP44XX_L4_CORE_BASE + 0x8154)
+#define CM_DIV_M4_DPLL_PER		(OMAP44XX_L4_CORE_BASE + 0x8158)
+#define CM_DIV_M5_DPLL_PER		(OMAP44XX_L4_CORE_BASE + 0x815c)
+#define CM_DIV_M6_DPLL_PER		(OMAP44XX_L4_CORE_BASE + 0x8160)
+#define CM_DIV_M7_DPLL_PER		(OMAP44XX_L4_CORE_BASE + 0x8164)
+#define CM_SSC_DELTAMSTEP_DPLL_PER	(OMAP44XX_L4_CORE_BASE + 0x8168)
+#define CM_SSC_MODFREQDIV_DPLL_PER	(OMAP44XX_L4_CORE_BASE + 0x816c)
+#define CM_EMU_OVERRIDE_DPLL_PER	(OMAP44XX_L4_CORE_BASE + 0x8170)
+#define CM_CLKMODE_DPLL_USB		(OMAP44XX_L4_CORE_BASE + 0x8180)
+#define CM_IDLEST_DPLL_USB		(OMAP44XX_L4_CORE_BASE + 0x8184)
+#define CM_AUTOIDLE_DPLL_USB		(OMAP44XX_L4_CORE_BASE + 0x8188)
+#define CM_CLKSEL_DPLL_USB		(OMAP44XX_L4_CORE_BASE + 0x818c)
+#define CM_DIV_M2_DPLL_USB		(OMAP44XX_L4_CORE_BASE + 0x8190)
+#define CM_SSC_DELTAMSTEP_DPLL_USB	(OMAP44XX_L4_CORE_BASE + 0x81a8)
+#define CM_SSC_MODFREQDIV_DPLL_USB	(OMAP44XX_L4_CORE_BASE + 0x81ac)
+#define CM_CLKDCOLDO_DPLL_USB		(OMAP44XX_L4_CORE_BASE + 0x81b4)
+#define CM_CLKMODE_DPLL_UNIPRO		(OMAP44XX_L4_CORE_BASE + 0x81c0)
+#define CM_IDLEST_DPLL_UNIPRO		(OMAP44XX_L4_CORE_BASE + 0x81c4)
+#define CM_AUTOIDLE_DPLL_UNIPRO		(OMAP44XX_L4_CORE_BASE + 0x81c8)
+#define CM_CLKSEL_DPLL_UNIPRO		(OMAP44XX_L4_CORE_BASE + 0x81cc)
+#define CM_DIV_M2_DPLL_UNIPRO		(OMAP44XX_L4_CORE_BASE + 0x81d0)
+#define CM_SSC_DELTAMSTEP_DPLL_UNIPRO	(OMAP44XX_L4_CORE_BASE + 0x81e8)
+#define CM_SSC_MODFREQDIV_DPLL_UNIPRO	(OMAP44XX_L4_CORE_BASE + 0x81ec)
+
+/* CM2.CORE module registers */
+#define CM_L3_1_CLKSTCTRL		(OMAP44XX_L4_CORE_BASE + 0x8700)
+#define CM_L3_1_DYNAMICDEP		(OMAP44XX_L4_CORE_BASE + 0x8708)
+#define CM_L3_1_L3_1_CLKCTRL		(OMAP44XX_L4_CORE_BASE + 0x8720)
+#define CM_L3_2_CLKSTCTRL		(OMAP44XX_L4_CORE_BASE + 0x8800)
+#define CM_L3_2_DYNAMICDEP		(OMAP44XX_L4_CORE_BASE + 0x8808)
+#define CM_L3_2_L3_2_CLKCTRL		(OMAP44XX_L4_CORE_BASE + 0x8820)
+#define CM_L3_2_GPMC_CLKCTRL		(OMAP44XX_L4_CORE_BASE + 0x8828)
+#define CM_L3_2_OCMC_RAM_CLKCTRL	(OMAP44XX_L4_CORE_BASE + 0x8830)
+#define CM_MPU_M3_CLKSTCTRL		(OMAP44XX_L4_CORE_BASE + 0x8900)
+#define CM_MPU_M3_STATICDEP		(OMAP44XX_L4_CORE_BASE + 0x8904)
+#define CM_MPU_M3_DYNAMICDEP		(OMAP44XX_L4_CORE_BASE + 0x8908)
+#define CM_MPU_M3_MPU_M3_CLKCTRL	(OMAP44XX_L4_CORE_BASE + 0x8920)
+#define CM_SDMA_CLKSTCTRL		(OMAP44XX_L4_CORE_BASE + 0x8a00)
+#define CM_SDMA_STATICDEP		(OMAP44XX_L4_CORE_BASE + 0x8a04)
+#define CM_SDMA_DYNAMICDEP		(OMAP44XX_L4_CORE_BASE + 0x8a08)
+#define CM_SDMA_SDMA_CLKCTRL		(OMAP44XX_L4_CORE_BASE + 0x8a20)
+#define CM_MEMIF_CLKSTCTRL		(OMAP44XX_L4_CORE_BASE + 0x8b00)
+#define CM_MEMIF_DMM_CLKCTRL		(OMAP44XX_L4_CORE_BASE + 0x8b20)
+#define CM_MEMIF_EMIF_FW_CLKCTRL	(OMAP44XX_L4_CORE_BASE + 0x8b28)
+#define CM_MEMIF_EMIF_1_CLKCTRL		(OMAP44XX_L4_CORE_BASE + 0x8b30)
+#define CM_MEMIF_EMIF_2_CLKCTRL		(OMAP44XX_L4_CORE_BASE + 0x8b38)
+#define CM_MEMIF_DLL_CLKCTRL		(OMAP44XX_L4_CORE_BASE + 0x8b40)
+#define CM_MEMIF_EMIF_H1_CLKCTRL	(OMAP44XX_L4_CORE_BASE + 0x8b50)
+#define CM_MEMIF_EMIF_H2_CLKCTRL	(OMAP44XX_L4_CORE_BASE + 0x8b58)
+#define CM_MEMIF_DLL_H_CLKCTRL		(OMAP44XX_L4_CORE_BASE + 0x8b60)
+#define CM_C2C_CLKSTCTRL		(OMAP44XX_L4_CORE_BASE + 0x8c00)
+#define CM_C2C_STATICDEP		(OMAP44XX_L4_CORE_BASE + 0x8c04)
+#define CM_C2C_DYNAMICDEP		(OMAP44XX_L4_CORE_BASE + 0x8c08)
+#define CM_C2C_SAD2D_CLKCTRL		(OMAP44XX_L4_CORE_BASE + 0x8c20)
+#define CM_C2C_MODEM_ICR_CLKCTRL	(OMAP44XX_L4_CORE_BASE + 0x8c28)
+#define CM_C2C_SAD2D_FW_CLKCTRL		(OMAP44XX_L4_CORE_BASE + 0x8c30)
+#define CM_L4CFG_CLKSTCTRL		(OMAP44XX_L4_CORE_BASE + 0x8d00)
+#define CM_L4CFG_DYNAMICDEP		(OMAP44XX_L4_CORE_BASE + 0x8d08)
+#define CM_L4CFG_L4_CFG_CLKCTRL		(OMAP44XX_L4_CORE_BASE + 0x8d20)
+#define CM_L4CFG_HW_SEM_CLKCTRL		(OMAP44XX_L4_CORE_BASE + 0x8d28)
+#define CM_L4CFG_MAILBOX_CLKCTRL	(OMAP44XX_L4_CORE_BASE + 0x8d30)
+#define CM_L4CFG_SAR_ROM_CLKCTRL	(OMAP44XX_L4_CORE_BASE + 0x8d38)
+#define CM_L3INSTR_CLKSTCTRL		(OMAP44XX_L4_CORE_BASE + 0x8e00)
+#define CM_L3INSTR_L3_3_CLKCTRL		(OMAP44XX_L4_CORE_BASE + 0x8e20)
+#define CM_L3INSTR_L3_INSTR_CLKCTRL	(OMAP44XX_L4_CORE_BASE + 0x8e28)
+#define CM_L3INSTR_INTRCONN_WP1_CLKCTRL	(OMAP44XX_L4_CORE_BASE + 0x8e40)
+
+/* CM2.L3INIT register offsets */
+#define CM_L3INIT_CLKSTCTRL		(OMAP44XX_L4_CORE_BASE + 0x9300)
+
+/* CM2.L4PER register offsets */
+#define CM_L4PER_CLKSTCTRL		(OMAP44XX_L4_CORE_BASE + 0x9400)
+#define CM_L4PER_DYNAMICDEP		(OMAP44XX_L4_CORE_BASE + 0x9408)
+#define CM_L4PER_ADC_CLKCTRL		(OMAP44XX_L4_CORE_BASE + 0x9420)
+#define CM_L4PER_GPTIMER10_CLKCTRL	(OMAP44XX_L4_CORE_BASE + 0x9428)
+#define CM_L4PER_GPTIMER11_CLKCTRL	(OMAP44XX_L4_CORE_BASE + 0x9430)
+#define CM_L4PER_GPTIMER2_CLKCTRL	(OMAP44XX_L4_CORE_BASE + 0x9438)
+#define CM_L4PER_GPTIMER3_CLKCTRL	(OMAP44XX_L4_CORE_BASE + 0x9440)
+#define CM_L4PER_GPTIMER4_CLKCTRL	(OMAP44XX_L4_CORE_BASE + 0x9448)
+#define CM_L4PER_GPTIMER9_CLKCTRL	(OMAP44XX_L4_CORE_BASE + 0x9450)
+#define CM_L4PER_ELM_CLKCTRL		(OMAP44XX_L4_CORE_BASE + 0x9458)
+#define CM_L4PER_GPIO2_CLKCTRL		(OMAP44XX_L4_CORE_BASE + 0x9460)
+#define CM_L4PER_GPIO3_CLKCTRL		(OMAP44XX_L4_CORE_BASE + 0x9468)
+#define CM_L4PER_GPIO4_CLKCTRL		(OMAP44XX_L4_CORE_BASE + 0x9470)
+#define CM_L4PER_GPIO5_CLKCTRL		(OMAP44XX_L4_CORE_BASE + 0x9478)
+#define CM_L4PER_GPIO6_CLKCTRL		(OMAP44XX_L4_CORE_BASE + 0x9480)
+#define CM_L4PER_HDQ1W_CLKCTRL		(OMAP44XX_L4_CORE_BASE + 0x9488)
+#define CM_L4PER_HECC1_CLKCTRL		(OMAP44XX_L4_CORE_BASE + 0x9490)
+#define CM_L4PER_HECC2_CLKCTRL		(OMAP44XX_L4_CORE_BASE + 0x9498)
+#define CM_L4PER_I2C1_CLKCTRL		(OMAP44XX_L4_CORE_BASE + 0x94a0)
+#define CM_L4PER_I2C2_CLKCTRL		(OMAP44XX_L4_CORE_BASE + 0x94a8)
+#define CM_L4PER_I2C3_CLKCTRL		(OMAP44XX_L4_CORE_BASE + 0x94b0)
+#define CM_L4PER_I2C4_CLKCTRL		(OMAP44XX_L4_CORE_BASE + 0x94b8)
+#define CM_L4PER_L4PER_CLKCTRL		(OMAP44XX_L4_CORE_BASE + 0x94c0)
+#define CM_L4PER_MCASP2_CLKCTRL		(OMAP44XX_L4_CORE_BASE + 0x94d0)
+#define CM_L4PER_MCASP3_CLKCTRL		(OMAP44XX_L4_CORE_BASE + 0x94d8)
+#define CM_L4PER_MCBSP4_CLKCTRL		(OMAP44XX_L4_CORE_BASE + 0x94e0)
+#define CM_L4PER_MGATE_CLKCTRL		(OMAP44XX_L4_CORE_BASE + 0x94e8)
+#define CM_L4PER_MCSPI1_CLKCTRL		(OMAP44XX_L4_CORE_BASE + 0x94f0)
+#define CM_L4PER_MCSPI2_CLKCTRL		(OMAP44XX_L4_CORE_BASE + 0x94f8)
+#define CM_L4PER_MCSPI3_CLKCTRL		(OMAP44XX_L4_CORE_BASE + 0x9500)
+#define CM_L4PER_MCSPI4_CLKCTRL		(OMAP44XX_L4_CORE_BASE + 0x9508)
+#define CM_L4PER_MMCSD3_CLKCTRL		(OMAP44XX_L4_CORE_BASE + 0x9520)
+#define CM_L4PER_MMCSD4_CLKCTRL		(OMAP44XX_L4_CORE_BASE + 0x9528)
+#define CM_L4PER_MSPROHG_CLKCTRL	(OMAP44XX_L4_CORE_BASE + 0x9530)
+#define CM_L4PER_SLIMBUS2_CLKCTRL	(OMAP44XX_L4_CORE_BASE + 0x9538)
+#define CM_L4PER_UART1_CLKCTRL		(OMAP44XX_L4_CORE_BASE + 0x9540)
+#define CM_L4PER_UART2_CLKCTRL		(OMAP44XX_L4_CORE_BASE + 0x9548)
+#define CM_L4PER_UART3_CLKCTRL		(OMAP44XX_L4_CORE_BASE + 0x9550)
+#define CM_L4PER_UART4_CLKCTRL		(OMAP44XX_L4_CORE_BASE + 0x9558)
+#define CM_L4PER_MMCSD5_CLKCTRL		(OMAP44XX_L4_CORE_BASE + 0x9560)
+#define CM_L4PER_I2C5_CLKCTRL		(OMAP44XX_L4_CORE_BASE + 0x9568)
+#define CM_L4SEC_CLKSTCTRL		(OMAP44XX_L4_CORE_BASE + 0x9580)
+#define CM_L4SEC_STATICDEP		(OMAP44XX_L4_CORE_BASE + 0x9584)
+#define CM_L4SEC_DYNAMICDEP		(OMAP44XX_L4_CORE_BASE + 0x9588)
+#define CM_L4SEC_AES1_CLKCTRL		(OMAP44XX_L4_CORE_BASE + 0x95a0)
+#define CM_L4SEC_AES2_CLKCTRL		(OMAP44XX_L4_CORE_BASE + 0x95a8)
+#define CM_L4SEC_DES3DES_CLKCTRL	(OMAP44XX_L4_CORE_BASE + 0x95b0)
+#define CM_L4SEC_PKAEIP29_CLKCTRL	(OMAP44XX_L4_CORE_BASE + 0x95b8)
+#define CM_L4SEC_RNG_CLKCTRL		(OMAP44XX_L4_CORE_BASE + 0x95c0)
+#define CM_L4SEC_SHA2MD51_CLKCTRL	(OMAP44XX_L4_CORE_BASE + 0x95c8)
+#define CM_L4SEC_CRYPTODMA_CLKCTRL	(OMAP44XX_L4_CORE_BASE + 0x95d8)
+
+/* CM2.IVAHD */
+#define CM_IVAHD_CLKSTCTRL			(OMAP44XX_L4_CORE_BASE + 0x8f00)
+#define CM_IVAHD_IVAHD_CLKCTRL		(OMAP44XX_L4_CORE_BASE + 0x8f20)
+#define CM_IVAHD_SL2_CLKCTRL		(OMAP44XX_L4_CORE_BASE + 0x8f28)
+
+/* CM2.L3INIT */
+#define CM_L3INIT_HSMMC1_CLKCTRL	(OMAP44XX_L4_CORE_BASE + 0x9328)
+#define CM_L3INIT_HSMMC2_CLKCTRL	(OMAP44XX_L4_CORE_BASE + 0x9330)
+#define CM_L3INIT_HSI_CLKCTRL           (OMAP44XX_L4_CORE_BASE + 0x9338)
+#define CM_L3INIT_HSUSBHOST_CLKCTRL     (OMAP44XX_L4_CORE_BASE + 0x9358)
+#define CM_L3INIT_HSUSBOTG_CLKCTRL      (OMAP44XX_L4_CORE_BASE + 0x9360)
+#define CM_L3INIT_HSUSBTLL_CLKCTRL      (OMAP44XX_L4_CORE_BASE + 0x9368)
+#define CM_L3INIT_P1500_CLKCTRL         (OMAP44XX_L4_CORE_BASE + 0x9378)
+#define CM_L3INIT_FSUSB_CLKCTRL         (OMAP44XX_L4_CORE_BASE + 0x93d0)
+#define CM_L3INIT_USBPHY_CLKCTRL        (OMAP44XX_L4_CORE_BASE + 0x93e0)
+
+/* CM2.CAM */
+#define CM_CAM_CLKSTCTRL                (OMAP44XX_L4_CORE_BASE + 0x9000)
+#define CM_CAM_ISS_CLKCTRL              (OMAP44XX_L4_CORE_BASE + 0x9020)
+#define CM_CAM_FDIF_CLKCTRL             (OMAP44XX_L4_CORE_BASE + 0x9028)
+
+/* CM2.DSS */
+#define CM_DSS_CLKSTCTRL                (OMAP44XX_L4_CORE_BASE + 0x9100)
+#define CM_DSS_DSS_CLKCTRL              (OMAP44XX_L4_CORE_BASE + 0x9120)
+
+/* CM2.SGX */
+#define CM_SGX_CLKSTCTRL                (OMAP44XX_L4_CORE_BASE + 0x9200)
+#define CM_SGX_SGX_CLKCTRL              (OMAP44XX_L4_CORE_BASE + 0x9220)
+
+/* DPLL register offsets */
+#define CM_CLKMODE_DPLL		0
+#define CM_IDLEST_DPLL		0x4
+#define CM_AUTOIDLE_DPLL	0x8
+#define CM_CLKSEL_DPLL		0xC
+#define CM_DIV_M2_DPLL		0x10
+#define CM_DIV_M3_DPLL		0x14
+#define CM_DIV_M4_DPLL		0x18
+#define CM_DIV_M5_DPLL		0x1C
+#define CM_DIV_M6_DPLL		0x20
+#define CM_DIV_M7_DPLL		0x24
+
+#define DPLL_CLKOUT_DIV_MASK	0x1F /* post-divider mask */
+
+/* CM_CLKMODE_DPLL */
+#define CM_CLKMODE_DPLL_DPLL_REGM4XEN_MASK	11
+#define CM_CLKMODE_DPLL_DPLL_EN_SHIFT		0
+#define CM_CLKMODE_DPLL_DPLL_EN_SHIFT		0
+#define CM_CLKMODE_DPLL_DPLL_EN_MASK		7
+
+#define DPLL_EN_STOP			1
+#define DPLL_EN_MN_BYPASS		4
+#define DPLL_EN_LOW_POWER_BYPASS	5
+#define DPLL_EN_FAST_RELOCK_BYPASS	6
+#define DPLL_EN_LOCK			7
+
+/* CM_IDLEST_DPLL fields */
+#define ST_DPLL_CLK_MASK		1
+
+/* CM_CLKSEL_DPLL */
+#define CM_CLKSEL_DPLL_DPLL_SD_DIV_SHIFT	24
+#define CM_CLKSEL_DPLL_DPLL_SD_DIV_MASK		(0xFF << 24)
+#define CM_CLKSEL_DPLL_M_SHIFT			8
+#define CM_CLKSEL_DPLL_M_MASK			(0x7FF << 8)
+#define CM_CLKSEL_DPLL_N_SHIFT			0
+#define CM_CLKSEL_DPLL_N_MASK			0x7F
+
+#define OMAP4_DPLL_MAX_N	127
+
+/* CM_SYS_CLKSEL */
+#define CM_SYS_CLKSEL_SYS_CLKSEL_MASK	7
+
+/* CM_CLKSEL_CORE */
+#define CLKSEL_CORE_SHIFT	0
+#define CLKSEL_L3_SHIFT		4
+#define CLKSEL_L4_SHIFT		8
+
+#define CLKSEL_CORE_X2_DIV_1	0
+#define CLKSEL_L3_CORE_DIV_2	1
+#define CLKSEL_L4_L3_DIV_2	1
+
+/* CM_ABE_PLL_REF_CLKSEL */
+#define CM_ABE_PLL_REF_CLKSEL_CLKSEL_SHIFT	0
+#define CM_ABE_PLL_REF_CLKSEL_CLKSEL_MASK	1
+#define CM_ABE_PLL_REF_CLKSEL_CLKSEL_SYSCLK	0
+#define CM_ABE_PLL_REF_CLKSEL_CLKSEL_32KCLK	1
+
+
+/* CM_SHADOW_FREQ_CONFIG1 */
+#define SHADOW_FREQ_CONFIG1_FREQ_UPDATE_MASK	1
+#define SHADOW_FREQ_CONFIG1_DLL_OVERRIDE_MASK	4
+#define SHADOW_FREQ_CONFIG1_DLL_RESET_MASK	8
+
+#define SHADOW_FREQ_CONFIG1_DPLL_EN_SHIFT	8
+#define SHADOW_FREQ_CONFIG1_DPLL_EN_MASK	(7 << 8)
+
+#define SHADOW_FREQ_CONFIG1_M2_DIV_SHIFT	11
+#define SHADOW_FREQ_CONFIG1_M2_DIV_MASK		(0x1F << 11)
+
+/*CM_<clock_domain>__CLKCTRL */
+#define CD_CLKCTRL_CLKTRCTRL_SHIFT		0
+#define CD_CLKCTRL_CLKTRCTRL_MASK		3
+
+#define CD_CLKCTRL_CLKTRCTRL_NO_SLEEP		0
+#define CD_CLKCTRL_CLKTRCTRL_SW_SLEEP		1
+#define CD_CLKCTRL_CLKTRCTRL_SW_WKUP		2
+#define CD_CLKCTRL_CLKTRCTRL_HW_AUTO		3
+
+
+/* CM_<clock_domain>_<module>_CLKCTRL */
+#define MODULE_CLKCTRL_MODULEMODE_SHIFT		0
+#define MODULE_CLKCTRL_MODULEMODE_MASK		3
+#define MODULE_CLKCTRL_IDLEST_SHIFT		16
+#define MODULE_CLKCTRL_IDLEST_MASK		(3 << 16)
+
+#define MODULE_CLKCTRL_MODULEMODE_SW_DISABLE		0
+#define MODULE_CLKCTRL_MODULEMODE_HW_AUTO		1
+#define MODULE_CLKCTRL_MODULEMODE_SW_EXPLICIT_EN	2
+
+#define MODULE_CLKCTRL_IDLEST_FULLY_FUNCTIONAL	0
+#define MODULE_CLKCTRL_IDLEST_TRANSITIONING	1
+#define MODULE_CLKCTRL_IDLEST_IDLE		2
+#define MODULE_CLKCTRL_IDLEST_DISABLED		3
+
+/* CM_L4PER_GPIO4_CLKCTRL */
+#define GPIO4_CLKCTRL_OPTFCLKEN_SHIFT		8
+
+/* CM_L3INIT_HSMMCn_CLKCTRL */
+#define HSMMC_CLKCTRL_CLKSEL_SHIFT		24
+
+/* CM_WKUP_GPTIMER1_CLKCTRL */
+#define GPTIMER1_CLKCTRL_CLKSEL_SHIFT		24
+
+/* CM_CAM_ISS_CLKCTRL */
+#define ISS_CLKCTRL_OPTFCLKEN_SHIFT		8
+
+/* CM_DSS_DSS_CLKCTRL */
+#define DSS_CLKCTRL_OPTFCLKEN_MASK		0xF00
+
+/* CM_L3INIT_USBPHY_CLKCTRL */
+#define USBPHY_CLKCTRL_OPTFCLKEN_PHY_48M_MASK	8
+
+/* Clock frequencies */
+#define OMAP_SYS_CLK_FREQ_38_4_MHZ	38400000
+#define OMAP_32K_CLK_FREQ		32768
+
+/* PRM_VC_CFG_I2C_CLK */
+#define PRM_VC_CFG_I2C_CLK_SCLH_SHIFT		0
+#define PRM_VC_CFG_I2C_CLK_SCLH_MASK		0xFF
+#define PRM_VC_CFG_I2C_CLK_SCLL_SHIFT		8
+#define PRM_VC_CFG_I2C_CLK_SCLL_MASK		(0xFF << 8)
+
+/* PRM_VC_VAL_BYPASS */
+#define PRM_VC_I2C_CHANNEL_FREQ_KHZ	400
+
+#define PRM_VC_VAL_BYPASS_VALID_BIT	0x1000000
+#define PRM_VC_VAL_BYPASS_SLAVEADDR_SHIFT	0
+#define PRM_VC_VAL_BYPASS_SLAVEADDR_MASK	0x7F
+#define PRM_VC_VAL_BYPASS_REGADDR_SHIFT		8
+#define PRM_VC_VAL_BYPASS_REGADDR_MASK		0xFF
+#define PRM_VC_VAL_BYPASS_DATA_SHIFT		16
+#define PRM_VC_VAL_BYPASS_DATA_MASK		0xFF
+
+#define SMPS_I2C_SLAVE_ADDR	0x12
+#define SMPS_REG_ADDR_VCORE1	0x55
+#define SMPS_REG_ADDR_VCORE2	0x5B
+#define SMPS_REG_ADDR_VCORE3	0x61
+
+#define SMPS_VOLT_1_0000_V	0x21
+#define SMPS_VOLT_1_0125_V	0x22
+#define SMPS_VOLT_1_0250_V	0x23
+#define SMPS_VOLT_1_0375_V	0x24
+#define SMPS_VOLT_1_0500_V	0x25
+#define SMPS_VOLT_1_0625_V	0x26
+#define SMPS_VOLT_1_0750_V	0x27
+#define SMPS_VOLT_1_0875_V	0x28
+#define SMPS_VOLT_1_1000_V	0x29
+#define SMPS_VOLT_1_1125_V	0x2A
+#define SMPS_VOLT_1_1250_V	0x2B
+#define SMPS_VOLT_1_1375_V	0x2C
+#define SMPS_VOLT_1_1500_V	0x2D
+#define SMPS_VOLT_1_1625_V	0x2E
+#define SMPS_VOLT_1_1750_V	0x2F
+#define SMPS_VOLT_1_1875_V	0x30
+#define SMPS_VOLT_1_2000_V	0x31
+#define SMPS_VOLT_1_2125_V	0x32
+#define SMPS_VOLT_1_2250_V	0x33
+#define SMPS_VOLT_1_2375_V	0x34
+#define SMPS_VOLT_1_2500_V	0x35
+#define SMPS_VOLT_1_2625_V	0x36
+#define SMPS_VOLT_1_2750_V	0x37
+#define SMPS_VOLT_1_2875_V	0x38
+#define SMPS_VOLT_1_3000_V	0x39
+#define SMPS_VOLT_1_3500_V	0x3A
+#define SMPS_VOLT_1_5000_V	0x3B
+#define SMPS_VOLT_1_5000_V	0x3B
+
+/* Defines for DPLL setup */
+#define DPLL_LOCKED_FREQ_TOLERANCE_0		0
+#define DPLL_LOCKED_FREQ_TOLERANCE_500_KHZ	500
+#define DPLL_LOCKED_FREQ_TOLERANCE_1_MHZ	1000
+
+#define CONFIGURE_NO_LOCK	0
+#define CONFIGURE_AND_LOCK	1
+
+struct dpll_regs {
+	u32 cm_clkmode_dpll;
+	u32 cm_idlest_dpll;
+	u32 cm_autoidle_dpll;
+	u32 cm_clksel_dpll;
+	u32 cm_div_m2_dpll;
+	u32 cm_div_m3_dpll;
+	u32 cm_div_m4_dpll;
+	u32 cm_div_m5_dpll;
+	u32 cm_div_m6_dpll;
+	u32 cm_div_m7_dpll;
+};
+
+/* DPLL parameter table */
+struct dpll_params {
+	s32 m;
+	s32 n;
+	u32 locked_freq_khz;
+	s32 m2;
+	s32 m3;
+	s32 m4;
+	s32 m5;
+	s32 m6;
+	s32 m7;
+};
+
+#endif /* _CLOCKS_OMAP4_H_ */
diff --git a/arch/arm/include/asm/arch-omap4/sys_proto.h b/arch/arm/include/asm/arch-omap4/sys_proto.h
index 33a1666..fd21afd 100644
--- a/arch/arm/include/asm/arch-omap4/sys_proto.h
+++ b/arch/arm/include/asm/arch-omap4/sys_proto.h
@@ -39,6 +39,12 @@  void set_muxconf_regs_non_essential(void);
 void sr32(void *, u32, u32, u32);
 u32 wait_on_value(u32, u32, void *, u32);
 void sdelay(unsigned long);
+void prcm_init(void);
+void bypass_dpll(u32 base);
+void freq_update_core(void);
+u32 get_syc_clk_freq(void);
+u32 omap4_ddr_clk(void);
+u32 omap4_revision(void);
 
 static inline u32 running_from_sdram(void)
 {
diff --git a/arch/arm/include/asm/omap_common.h b/arch/arm/include/asm/omap_common.h
index 50247af..49daa85 100644
--- a/arch/arm/include/asm/omap_common.h
+++ b/arch/arm/include/asm/omap_common.h
@@ -25,6 +25,9 @@ 
 #ifndef	_OMAP_COMMON_H_
 #define	_OMAP_COMMON_H_
 
+/* Max value for DPLL multiplier M */
+#define OMAP_DPLL_MAX_N	127
+
 /* extract a bit field from a bit vector */
 #define get_bit_field(nr, start, mask)\
 	(((nr) & (mask)) >> (start))
diff --git a/spl/board/ti/sdp4430/Makefile b/spl/board/ti/sdp4430/Makefile
index 6a6aa42..40e3e79 100644
--- a/spl/board/ti/sdp4430/Makefile
+++ b/spl/board/ti/sdp4430/Makefile
@@ -115,8 +115,12 @@  $(obj)board.c:$(obj)omap4_mux_data.h
 	@rm -f $@
 	@ln -s $(TOPDIR)/arch/arm/cpu/armv7/omap4/board.c $@
 
+$(obj)clocks.c:
+	@rm -f $@
+	@ln -s $(TOPDIR)/arch/arm/cpu/armv7/omap4/clocks.c $@
+
 SOBJS	+= lowlevel_init.o
-COBJS	+= board.o
+COBJS	+= board.o clocks.o
 
 # rules
 LDPPFLAGS += -include $(TOPDIR)/include/config.h