diff --git a/arch/arm/mach-omap2/omap_twl.c b/arch/arm/mach-omap2/omap_twl.c
index b8f0874..15f8c6c 100644
--- a/arch/arm/mach-omap2/omap_twl.c
+++ b/arch/arm/mach-omap2/omap_twl.c
@@ -16,6 +16,7 @@
 #include <linux/err.h>
 #include <linux/io.h>
 #include <linux/kernel.h>
+#include <linux/i2c/twl.h>
 
 #include <plat/voltage.h>
 
@@ -37,6 +38,28 @@
 #define OMAP3630_VP2_VLIMITTO_VDDMIN	0x18
 #define OMAP3630_VP2_VLIMITTO_VDDMAX	0x30
 
+#define OMAP4_SRI2C_SLAVE_ADDR		0x12
+#define OMAP4_VDD_MPU_SR_VOLT_REG	0x55
+#define OMAP4_VDD_IVA_SR_VOLT_REG	0x5B
+#define OMAP4_VDD_CORE_SR_VOLT_REG	0x61
+
+#define OMAP4_VP_CONFIG_ERROROFFSET	0x00
+#define OMAP4_VP_VSTEPMIN_VSTEPMIN	0x01
+#define OMAP4_VP_VSTEPMAX_VSTEPMAX	0x04
+#define OMAP4_VP_VLIMITTO_TIMEOUT_US	200
+
+#define OMAP4_VP_MPU_VLIMITTO_VDDMIN	0xA
+#define OMAP4_VP_MPU_VLIMITTO_VDDMAX	0x39
+#define OMAP4_VP_IVA_VLIMITTO_VDDMIN	0xA
+#define OMAP4_VP_IVA_VLIMITTO_VDDMAX	0x2D
+#define OMAP4_VP_CORE_VLIMITTO_VDDMIN	0xA
+#define OMAP4_VP_CORE_VLIMITTO_VDDMAX	0x28
+
+static bool is_offset_valid;
+static u8 smps_offset;
+
+#define REG_SMPS_OFFSET         0xE0
+
 unsigned long twl4030_vsel_to_uv(const u8 vsel)
 {
 	return (((vsel * 125) + 6000)) * 100;
@@ -47,6 +70,70 @@
 	return DIV_ROUND_UP(uv - 600000, 12500);
 }
 
+unsigned long twl6030_vsel_to_uv(const u8 vsel)
+{
+	/*
+	 * In TWL6030 depending on the value of SMPS_OFFSET
+	 * efuse register the voltage range supported in
+	 * standard mode can be either between 0.6V - 1.3V or
+	 * 0.7V - 1.4V. In TWL6030 ES1.0 SMPS_OFFSET efuse
+	 * is programmed to all 0's where as starting from
+	 * TWL6030 ES1.1 the efuse is programmed to 1
+	 */
+	if (!is_offset_valid) {
+		twl_i2c_read_u8(TWL6030_MODULE_ID0, &smps_offset,
+				REG_SMPS_OFFSET);
+		is_offset_valid = true;
+	}
+
+	/*
+	 * There is no specific formula for voltage to vsel
+	 * conversion above 1.3V. There are special hardcoded
+	 * values for voltages above 1.3V. Currently we are
+	 * hardcoding only for 1.35 V which is used for 1GH OPP for
+	 * OMAP4430.
+	 */
+	if (vsel == 0x3A)
+		return 1350000;
+
+	if (smps_offset & 0x8)
+		return ((((vsel - 1) * 125) + 7000)) * 100;
+	else
+		return ((((vsel - 1) * 125) + 6000)) * 100;
+}
+
+u8 twl6030_uv_to_vsel(unsigned long uv)
+{
+	/*
+	 * In TWL6030 depending on the value of SMPS_OFFSET
+	 * efuse register the voltage range supported in
+	 * standard mode can be either between 0.6V - 1.3V or
+	 * 0.7V - 1.4V. In TWL6030 ES1.0 SMPS_OFFSET efuse
+	 * is programmed to all 0's where as starting from
+	 * TWL6030 ES1.1 the efuse is programmed to 1
+	 */
+	if (!is_offset_valid) {
+		twl_i2c_read_u8(TWL6030_MODULE_ID0, &smps_offset,
+				REG_SMPS_OFFSET);
+		is_offset_valid = true;
+	}
+
+	/*
+	 * There is no specific formula for voltage to vsel
+	 * conversion above 1.3V. There are special hardcoded
+	 * values for voltages above 1.3V. Currently we are
+	 * hardcoding only for 1.35 V which is used for 1GH OPP for
+	 * OMAP4430.
+	 */
+	if (uv == 1350000)
+		return 0x3A;
+
+	if (smps_offset & 0x8)
+		return DIV_ROUND_UP(uv - 700000, 12500) + 1;
+	else
+		return DIV_ROUND_UP(uv - 600000, 12500) + 1;
+}
+
 static struct omap_volt_pmic_info omap3_mpu_volt_info = {
 	.slew_rate		= 4000,
 	.step_size		= 12500,
@@ -87,6 +174,85 @@
 	.uv_to_vsel		= twl4030_uv_to_vsel,
 };
 
+static struct omap_volt_pmic_info omap4_mpu_volt_info = {
+	.slew_rate		= 4000,
+	.step_size		= 12500,
+	.on_volt		= 1350000,
+	.onlp_volt		= 1350000,
+	.ret_volt		= 837500,
+	.off_volt		= 600000,
+	.volt_setup_time	= 0,
+	.vp_erroroffset		= OMAP4_VP_CONFIG_ERROROFFSET,
+	.vp_vstepmin		= OMAP4_VP_VSTEPMIN_VSTEPMIN,
+	.vp_vstepmax		= OMAP4_VP_VSTEPMAX_VSTEPMAX,
+	.vp_vddmin		= OMAP4_VP_MPU_VLIMITTO_VDDMIN,
+	.vp_vddmax		= OMAP4_VP_MPU_VLIMITTO_VDDMAX,
+	.vp_timeout_us		= OMAP4_VP_VLIMITTO_TIMEOUT_US,
+	.i2c_slave_addr		= OMAP4_SRI2C_SLAVE_ADDR,
+	.pmic_reg		= OMAP4_VDD_MPU_SR_VOLT_REG,
+	.vsel_to_uv		= twl6030_vsel_to_uv,
+	.uv_to_vsel		= twl6030_uv_to_vsel,
+};
+
+static struct omap_volt_pmic_info omap4_iva_volt_info = {
+	.slew_rate		= 4000,
+	.step_size		= 12500,
+	.on_volt		= 1100000,
+	.onlp_volt		= 1100000,
+	.ret_volt		= 837500,
+	.off_volt		= 600000,
+	.volt_setup_time	= 0,
+	.vp_erroroffset		= OMAP4_VP_CONFIG_ERROROFFSET,
+	.vp_vstepmin		= OMAP4_VP_VSTEPMIN_VSTEPMIN,
+	.vp_vstepmax		= OMAP4_VP_VSTEPMAX_VSTEPMAX,
+	.vp_vddmin		= OMAP4_VP_IVA_VLIMITTO_VDDMIN,
+	.vp_vddmax		= OMAP4_VP_IVA_VLIMITTO_VDDMAX,
+	.vp_timeout_us		= OMAP4_VP_VLIMITTO_TIMEOUT_US,
+	.i2c_slave_addr		= OMAP4_SRI2C_SLAVE_ADDR,
+	.pmic_reg		= OMAP4_VDD_IVA_SR_VOLT_REG,
+	.vsel_to_uv		= twl6030_vsel_to_uv,
+	.uv_to_vsel		= twl6030_uv_to_vsel,
+};
+
+static struct omap_volt_pmic_info omap4_core_volt_info = {
+	.slew_rate		= 4000,
+	.step_size		= 12500,
+	.on_volt		= 1100000,
+	.onlp_volt		= 1100000,
+	.ret_volt		= 837500,
+	.off_volt		= 600000,
+	.volt_setup_time	= 0,
+	.vp_erroroffset		= OMAP4_VP_CONFIG_ERROROFFSET,
+	.vp_vstepmin		= OMAP4_VP_VSTEPMIN_VSTEPMIN,
+	.vp_vstepmax		= OMAP4_VP_VSTEPMAX_VSTEPMAX,
+	.vp_vddmin		= OMAP4_VP_CORE_VLIMITTO_VDDMIN,
+	.vp_vddmax		= OMAP4_VP_CORE_VLIMITTO_VDDMAX,
+	.vp_timeout_us		= OMAP4_VP_VLIMITTO_TIMEOUT_US,
+	.i2c_slave_addr		= OMAP4_SRI2C_SLAVE_ADDR,
+	.pmic_reg		= OMAP4_VDD_CORE_SR_VOLT_REG,
+	.vsel_to_uv		= twl6030_vsel_to_uv,
+	.uv_to_vsel		= twl6030_uv_to_vsel,
+};
+
+int __init omap4_twl_init(void)
+{
+	struct voltagedomain *voltdm;
+
+	if (!cpu_is_omap44xx())
+		return -ENODEV;
+
+	voltdm = omap_voltage_domain_lookup("mpu");
+	omap_voltage_register_pmic(voltdm, &omap4_mpu_volt_info);
+
+	voltdm = omap_voltage_domain_lookup("iva");
+	omap_voltage_register_pmic(voltdm, &omap4_iva_volt_info);
+
+	voltdm = omap_voltage_domain_lookup("core");
+	omap_voltage_register_pmic(voltdm, &omap4_core_volt_info);
+
+	return 0;
+}
+
 int __init omap3_twl_init(void)
 {
 	struct voltagedomain *voltdm;