diff --git a/drivers/mfd/88pm860x-core.c b/drivers/mfd/88pm860x-core.c
index 17dfe9b..78c3a9e 100644
--- a/drivers/mfd/88pm860x-core.c
+++ b/drivers/mfd/88pm860x-core.c
@@ -503,6 +503,99 @@
 		free_irq(chip->core_irq, chip);
 }
 
+int pm8606_osc_enable(struct pm860x_chip *chip, unsigned short client)
+{
+	int ret = -EIO;
+	struct i2c_client *i2c = (chip->id == CHIP_PM8606) ?
+		chip->client : chip->companion;
+
+	dev_dbg(chip->dev, "%s(B): client=0x%x\n", __func__, client);
+	dev_dbg(chip->dev, "%s(B): vote=0x%x status=%d\n",
+			__func__, chip->osc_vote,
+			chip->osc_status);
+
+	mutex_lock(&chip->osc_lock);
+	/* Update voting status */
+	chip->osc_vote |= client;
+	/* If reference group is off - turn on*/
+	if (chip->osc_status != PM8606_REF_GP_OSC_ON) {
+		chip->osc_status = PM8606_REF_GP_OSC_UNKNOWN;
+		/* Enable Reference group Vsys */
+		if (pm860x_set_bits(i2c, PM8606_VSYS,
+				PM8606_VSYS_EN, PM8606_VSYS_EN))
+			goto out;
+
+		/*Enable Internal Oscillator */
+		if (pm860x_set_bits(i2c, PM8606_MISC,
+				PM8606_MISC_OSC_EN, PM8606_MISC_OSC_EN))
+			goto out;
+		/* Update status (only if writes succeed) */
+		chip->osc_status = PM8606_REF_GP_OSC_ON;
+	}
+	mutex_unlock(&chip->osc_lock);
+
+	dev_dbg(chip->dev, "%s(A): vote=0x%x status=%d ret=%d\n",
+			__func__, chip->osc_vote,
+			chip->osc_status, ret);
+	return 0;
+out:
+	mutex_unlock(&chip->osc_lock);
+	return ret;
+}
+
+int pm8606_osc_disable(struct pm860x_chip *chip, unsigned short client)
+{
+	int ret = -EIO;
+	struct i2c_client *i2c = (chip->id == CHIP_PM8606) ?
+		chip->client : chip->companion;
+
+	dev_dbg(chip->dev, "%s(B): client=0x%x\n", __func__, client);
+	dev_dbg(chip->dev, "%s(B): vote=0x%x status=%d\n",
+			__func__, chip->osc_vote,
+			chip->osc_status);
+
+	mutex_lock(&chip->osc_lock);
+	/*Update voting status */
+	chip->osc_vote &= ~(client);
+	/* If reference group is off and this is the last client to release
+	 * - turn off */
+	if ((chip->osc_status != PM8606_REF_GP_OSC_OFF) &&
+			(chip->osc_vote == REF_GP_NO_CLIENTS)) {
+		chip->osc_status = PM8606_REF_GP_OSC_UNKNOWN;
+		/* Disable Reference group Vsys */
+		if (pm860x_set_bits(i2c, PM8606_VSYS, PM8606_VSYS_EN, 0))
+			goto out;
+		/* Disable Internal Oscillator */
+		if (pm860x_set_bits(i2c, PM8606_MISC, PM8606_MISC_OSC_EN, 0))
+			goto out;
+		chip->osc_status = PM8606_REF_GP_OSC_OFF;
+	}
+	mutex_unlock(&chip->osc_lock);
+
+	dev_dbg(chip->dev, "%s(A): vote=0x%x status=%d ret=%d\n",
+			__func__, chip->osc_vote,
+			chip->osc_status, ret);
+	return 0;
+out:
+	mutex_unlock(&chip->osc_lock);
+	return ret;
+}
+
+static void __devinit device_osc_init(struct i2c_client *i2c)
+{
+	struct pm860x_chip *chip = i2c_get_clientdata(i2c);
+
+	mutex_init(&chip->osc_lock);
+	/* init portofino reference group voting and status */
+	/* Disable Reference group Vsys */
+	pm860x_set_bits(i2c, PM8606_VSYS, PM8606_VSYS_EN, 0);
+	/* Disable Internal Oscillator */
+	pm860x_set_bits(i2c, PM8606_MISC, PM8606_MISC_OSC_EN, 0);
+
+	chip->osc_vote = REF_GP_NO_CLIENTS;
+	chip->osc_status = PM8606_REF_GP_OSC_OFF;
+}
+
 static void __devinit device_bk_init(struct pm860x_chip *chip,
 				     struct pm860x_platform_data *pdata)
 {
@@ -774,6 +867,7 @@
 
 	switch (chip->id) {
 	case CHIP_PM8606:
+		device_osc_init(chip->client);
 		device_bk_init(chip, pdata);
 		device_led_init(chip, pdata);
 		break;
@@ -785,6 +879,7 @@
 	if (chip->companion) {
 		switch (chip->id) {
 		case CHIP_PM8607:
+			device_osc_init(chip->companion);
 			device_bk_init(chip, pdata);
 			device_led_init(chip, pdata);
 			break;
diff --git a/include/linux/mfd/88pm860x.h b/include/linux/mfd/88pm860x.h
index 8b583f3..84d071a 100644
--- a/include/linux/mfd/88pm860x.h
+++ b/include/linux/mfd/88pm860x.h
@@ -263,6 +263,22 @@
 #define PM8607_PD_PREBIAS_MASK		(0x1F << 0)
 #define PM8607_PD_PRECHG_MASK		(7 << 5)
 
+#define PM8606_REF_GP_OSC_OFF         0
+#define PM8606_REF_GP_OSC_ON          1
+#define PM8606_REF_GP_OSC_UNKNOWN     2
+
+/* Clients of reference group and 8MHz oscillator in 88PM8606 */
+enum pm8606_ref_gp_and_osc_clients {
+	REF_GP_NO_CLIENTS       = 0,
+	WLED1_DUTY              = (1<<0), /*PF 0x02.7:0*/
+	WLED2_DUTY              = (1<<1), /*PF 0x04.7:0*/
+	WLED3_DUTY              = (1<<2), /*PF 0x06.7:0*/
+	RGB1_ENABLE             = (1<<3), /*PF 0x07.1*/
+	RGB2_ENABLE             = (1<<4), /*PF 0x07.2*/
+	LDO_VBR_EN              = (1<<5), /*PF 0x12.0*/
+	REF_GP_MAX_CLIENT       = 0xFFFF
+};
+
 /* Interrupt Number in 88PM8607 */
 enum {
 	PM8607_IRQ_ONKEY,
@@ -298,6 +314,7 @@
 struct pm860x_chip {
 	struct device		*dev;
 	struct mutex		irq_lock;
+	struct mutex		osc_lock;
 	struct i2c_client	*client;
 	struct i2c_client	*companion;	/* companion chip client */
 	struct regmap           *regmap;
@@ -305,11 +322,13 @@
 
 	int			buck3_double;	/* DVC ramp slope double */
 	unsigned short		companion_addr;
+	unsigned short		osc_vote;
 	int			id;
 	int			irq_mode;
 	int			irq_base;
 	int			core_irq;
 	unsigned char		chip_version;
+	unsigned char		osc_status;
 
 	unsigned int            wakeup_flag;
 };
@@ -370,6 +389,9 @@
 	int		num_regulators;
 };
 
+extern int pm8606_osc_enable(struct pm860x_chip *, unsigned short);
+extern int pm8606_osc_disable(struct pm860x_chip *, unsigned short);
+
 extern int pm860x_reg_read(struct i2c_client *, int);
 extern int pm860x_reg_write(struct i2c_client *, int, unsigned char);
 extern int pm860x_bulk_read(struct i2c_client *, int, int, unsigned char *);