diff --git a/board/cm_t35/cm_t35.c b/board/cm_t35/cm_t35.c
index 84c36ba..87d7354 100644
--- a/board/cm_t35/cm_t35.c
+++ b/board/cm_t35/cm_t35.c
@@ -493,17 +493,17 @@
 static void reset_net_chip(void)
 {
 	/* Set GPIO1 of TPS65930 as output */
-	twl4030_i2c_write_u8(TWL4030_CHIP_GPIO, 0x02,
-				TWL4030_BASEADD_GPIO + 0x03);
+	twl4030_i2c_write_u8(TWL4030_CHIP_GPIO, TWL4030_BASEADD_GPIO + 0x03,
+			     0x02);
 	/* Send a pulse on the GPIO pin */
-	twl4030_i2c_write_u8(TWL4030_CHIP_GPIO, 0x02,
-				TWL4030_BASEADD_GPIO + 0x0C);
+	twl4030_i2c_write_u8(TWL4030_CHIP_GPIO, TWL4030_BASEADD_GPIO + 0x0C,
+			     0x02);
 	udelay(1);
-	twl4030_i2c_write_u8(TWL4030_CHIP_GPIO, 0x02,
-				TWL4030_BASEADD_GPIO + 0x09);
+	twl4030_i2c_write_u8(TWL4030_CHIP_GPIO, TWL4030_BASEADD_GPIO + 0x09,
+			     0x02);
 	mdelay(40);
-	twl4030_i2c_write_u8(TWL4030_CHIP_GPIO, 0x02,
-				TWL4030_BASEADD_GPIO + 0x0C);
+	twl4030_i2c_write_u8(TWL4030_CHIP_GPIO, TWL4030_BASEADD_GPIO + 0x0C,
+			     0x02);
 	mdelay(1);
 }
 #else
@@ -600,10 +600,10 @@
 	twl4030_i2c_read_u8(TWL4030_CHIP_GPIO, &val, offset);
 	/* Set GPIO6 and GPIO7 of TPS65930 as output */
 	val |= 0xC0;
-	twl4030_i2c_write_u8(TWL4030_CHIP_GPIO, val, offset);
+	twl4030_i2c_write_u8(TWL4030_CHIP_GPIO, offset, val);
 	offset = TWL4030_BASEADD_GPIO + TWL4030_GPIO_SETGPIODATAOUT1;
 	/* Take both PHYs out of reset */
-	twl4030_i2c_write_u8(TWL4030_CHIP_GPIO, 0xC0, offset);
+	twl4030_i2c_write_u8(TWL4030_CHIP_GPIO, offset, 0xC0);
 	udelay(1);
 
 	return omap_ehci_hcd_init(&usbhs_bdata, hccr, hcor);
diff --git a/board/nokia/rx51/rx51.c b/board/nokia/rx51/rx51.c
index 48eb65f..860d52d 100644
--- a/board/nokia/rx51/rx51.c
+++ b/board/nokia/rx51/rx51.c
@@ -332,10 +332,10 @@
 static void twl4030_regulator_set_mode(u8 id, u8 mode)
 {
 	u16 msg = MSG_SINGULAR(DEV_GRP_P1, id, mode);
-	twl4030_i2c_write_u8(TWL4030_CHIP_PM_MASTER, msg >> 8,
-			TWL4030_PM_MASTER_PB_WORD_MSB);
-	twl4030_i2c_write_u8(TWL4030_CHIP_PM_MASTER, msg & 0xff,
-			TWL4030_PM_MASTER_PB_WORD_LSB);
+	twl4030_i2c_write_u8(TWL4030_CHIP_PM_MASTER,
+			     TWL4030_PM_MASTER_PB_WORD_MSB, msg >> 8);
+	twl4030_i2c_write_u8(TWL4030_CHIP_PM_MASTER,
+			     TWL4030_PM_MASTER_PB_WORD_LSB, msg & 0xff);
 }
 
 static void omap3_emu_romcode_call(u32 service_id, u32 *parameters)
@@ -410,8 +410,8 @@
 			TWL4030_PM_MASTER_PB_CFG);
 
 	/* enable I2C access to powerbus (needed for twl4030 regulator) */
-	twl4030_i2c_write_u8(TWL4030_CHIP_PM_MASTER, 0x02,
-			TWL4030_PM_MASTER_PB_CFG);
+	twl4030_i2c_write_u8(TWL4030_CHIP_PM_MASTER, TWL4030_PM_MASTER_PB_CFG,
+			     0x02);
 
 	/* set VAUX3, VSIM and VMMC1 state to active - enable eMMC memory */
 	twl4030_regulator_set_mode(RES_VAUX3, RES_STATE_ACTIVE);
@@ -419,8 +419,8 @@
 	twl4030_regulator_set_mode(RES_VMMC1, RES_STATE_ACTIVE);
 
 	/* restore I2C access state */
-	twl4030_i2c_write_u8(TWL4030_CHIP_PM_MASTER, state,
-			TWL4030_PM_MASTER_PB_CFG);
+	twl4030_i2c_write_u8(TWL4030_CHIP_PM_MASTER, TWL4030_PM_MASTER_PB_CFG,
+			     state);
 
 	/* set env variable attkernaddr for relocated kernel */
 	sprintf(buf, "%#x", KERNEL_ADDRESS);
@@ -481,8 +481,8 @@
 	/* timeout 0 means watchdog is disabled */
 	/* reset watchdog timeout to 31s (maximum) */
 	if (timeout != 0)
-		twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER, 31,
-				TWL4030_PM_RECEIVER_WATCHDOG_CFG);
+		twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER,
+				     TWL4030_PM_RECEIVER_WATCHDOG_CFG, 31);
 
 	/* store last watchdog reset time */
 	twl_wd_time = get_timer(0);
@@ -541,18 +541,18 @@
 	ctrl |= TWL4030_KEYPAD_CTRL_KBD_ON;
 	ctrl |= TWL4030_KEYPAD_CTRL_SOFT_NRST;
 	ctrl |= TWL4030_KEYPAD_CTRL_SOFTMODEN;
-	ret |= twl4030_i2c_write_u8(TWL4030_CHIP_KEYPAD, ctrl,
-				TWL4030_KEYPAD_KEYP_CTRL_REG);
+	ret |= twl4030_i2c_write_u8(TWL4030_CHIP_KEYPAD,
+				    TWL4030_KEYPAD_KEYP_CTRL_REG, ctrl);
 	/* enable key event status */
-	ret |= twl4030_i2c_write_u8(TWL4030_CHIP_KEYPAD, 0xfe,
-				TWL4030_KEYPAD_KEYP_IMR1);
+	ret |= twl4030_i2c_write_u8(TWL4030_CHIP_KEYPAD,
+				    TWL4030_KEYPAD_KEYP_IMR1, 0xfe);
 	/* enable interrupt generation on rising and falling */
 	/* this is a workaround for qemu twl4030 emulation */
-	ret |= twl4030_i2c_write_u8(TWL4030_CHIP_KEYPAD, 0x57,
-				TWL4030_KEYPAD_KEYP_EDR);
+	ret |= twl4030_i2c_write_u8(TWL4030_CHIP_KEYPAD,
+				    TWL4030_KEYPAD_KEYP_EDR, 0x57);
 	/* enable ISR clear on read */
-	ret |= twl4030_i2c_write_u8(TWL4030_CHIP_KEYPAD, 0x05,
-				TWL4030_KEYPAD_KEYP_SIH_CTRL);
+	ret |= twl4030_i2c_write_u8(TWL4030_CHIP_KEYPAD,
+				    TWL4030_KEYPAD_KEYP_SIH_CTRL, 0x05);
 	return 0;
 }
 
diff --git a/board/pandora/pandora.c b/board/pandora/pandora.c
index 9ff5dd7..5f0c58d 100644
--- a/board/pandora/pandora.c
+++ b/board/pandora/pandora.c
@@ -114,8 +114,9 @@
 
 	/* Enable battery backup capacitor (3.2V, 0.5mA charge current) */
 	twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER,
+		TWL4030_PM_RECEIVER_BB_CFG,
 		TWL4030_BB_CFG_BBCHEN | TWL4030_BB_CFG_BBSEL_3200MV |
-		TWL4030_BB_CFG_BBISEL_500UA, TWL4030_PM_RECEIVER_BB_CFG);
+		TWL4030_BB_CFG_BBISEL_500UA);
 
 	dieid_num_r();
 
diff --git a/drivers/misc/twl4030_led.c b/drivers/misc/twl4030_led.c
index 33cea11..e150d8f 100644
--- a/drivers/misc/twl4030_led.c
+++ b/drivers/misc/twl4030_led.c
@@ -42,7 +42,7 @@
 	if (ledon_mask & TWL4030_LED_LEDEN_LEDBON)
 		ledon_mask |= TWL4030_LED_LEDEN_LEDBPWM;
 
-	twl4030_i2c_write_u8(TWL4030_CHIP_LED, ledon_mask,
-			     TWL4030_LED_LEDEN);
+	twl4030_i2c_write_u8(TWL4030_CHIP_LED, TWL4030_LED_LEDEN,
+			     ledon_mask);
 
 }
diff --git a/drivers/power/twl4030.c b/drivers/power/twl4030.c
index e7d5f13..2bf94b1 100644
--- a/drivers/power/twl4030.c
+++ b/drivers/power/twl4030.c
@@ -51,8 +51,8 @@
 		printf("Could not initialize hardware reset\n");
 	} else {
 		val |= TWL4030_PM_MASTER_SW_EVENTS_STOPON_PWRON;
-		if (twl4030_i2c_write_u8(TWL4030_CHIP_PM_MASTER, val,
-					 TWL4030_PM_MASTER_P1_SW_EVENTS)) {
+		if (twl4030_i2c_write_u8(TWL4030_CHIP_PM_MASTER,
+					 TWL4030_PM_MASTER_P1_SW_EVENTS, val)) {
 			printf("Error:TWL4030: failed to write the power register\n");
 			printf("Could not initialize hardware reset\n");
 		}
@@ -68,8 +68,8 @@
 	int ret;
 
 	/* Select the Voltage */
-	ret = twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER, vsel_val,
-				vsel_reg);
+	ret = twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER, vsel_reg,
+				   vsel_val);
 	if (ret != 0) {
 		printf("Could not write vsel to reg %02x (%d)\n",
 			vsel_reg, ret);
@@ -77,8 +77,8 @@
 	}
 
 	/* Select the Device Group (enable the supply if dev_grp_sel != 0) */
-	ret = twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER, dev_grp_sel,
-				dev_grp);
+	ret = twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER, dev_grp,
+				   dev_grp_sel);
 	if (ret != 0)
 		printf("Could not write grp_sel to reg %02x (%d)\n",
 			dev_grp, ret);
diff --git a/drivers/usb/phy/twl4030.c b/drivers/usb/phy/twl4030.c
index 54d2e61..f41cc07 100644
--- a/drivers/usb/phy/twl4030.c
+++ b/drivers/usb/phy/twl4030.c
@@ -54,7 +54,7 @@
 {
 	int ret;
 
-	ret = twl4030_i2c_write_u8(TWL4030_CHIP_USB, data, address);
+	ret = twl4030_i2c_write_u8(TWL4030_CHIP_USB, address, data);
 	if (ret != 0)
 		printf("TWL4030:USB:Write[0x%x] Error %d\n", address, ret);
 
@@ -78,40 +78,40 @@
 static void twl4030_usb_ldo_init(void)
 {
 	/* Enable writing to power configuration registers */
-	twl4030_i2c_write_u8(TWL4030_CHIP_PM_MASTER, 0xC0,
-			     TWL4030_PM_MASTER_PROTECT_KEY);
-	twl4030_i2c_write_u8(TWL4030_CHIP_PM_MASTER, 0x0C,
-			     TWL4030_PM_MASTER_PROTECT_KEY);
+	twl4030_i2c_write_u8(TWL4030_CHIP_PM_MASTER,
+			     TWL4030_PM_MASTER_PROTECT_KEY, 0xC0);
+	twl4030_i2c_write_u8(TWL4030_CHIP_PM_MASTER,
+			     TWL4030_PM_MASTER_PROTECT_KEY, 0x0C);
 
 	/* put VUSB3V1 LDO in active state */
-	twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER, 0x00,
-			     TWL4030_PM_RECEIVER_VUSB_DEDICATED2);
+	twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER,
+			     TWL4030_PM_RECEIVER_VUSB_DEDICATED2, 0x00);
 
 	/* input to VUSB3V1 LDO is from VBAT, not VBUS */
-	twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER, 0x14,
-			     TWL4030_PM_RECEIVER_VUSB_DEDICATED1);
+	twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER,
+			     TWL4030_PM_RECEIVER_VUSB_DEDICATED1, 0x14);
 
 	/* turn on 3.1V regulator */
-	twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER, 0x20,
-			     TWL4030_PM_RECEIVER_VUSB3V1_DEV_GRP);
-	twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER, 0x00,
-			     TWL4030_PM_RECEIVER_VUSB3V1_TYPE);
+	twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER,
+			     TWL4030_PM_RECEIVER_VUSB3V1_DEV_GRP, 0x20);
+	twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER,
+			     TWL4030_PM_RECEIVER_VUSB3V1_TYPE, 0x00);
 
 	/* turn on 1.5V regulator */
-	twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER, 0x20,
-			     TWL4030_PM_RECEIVER_VUSB1V5_DEV_GRP);
-	twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER, 0x00,
-			     TWL4030_PM_RECEIVER_VUSB1V5_TYPE);
+	twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER,
+			     TWL4030_PM_RECEIVER_VUSB1V5_DEV_GRP, 0x20);
+	twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER,
+			     TWL4030_PM_RECEIVER_VUSB1V5_TYPE, 0x00);
 
 	/* turn on 1.8V regulator */
-	twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER, 0x20,
-			     TWL4030_PM_RECEIVER_VUSB1V8_DEV_GRP);
-	twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER, 0x00,
-			     TWL4030_PM_RECEIVER_VUSB1V8_TYPE);
+	twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER,
+			     TWL4030_PM_RECEIVER_VUSB1V8_DEV_GRP, 0x20);
+	twl4030_i2c_write_u8(TWL4030_CHIP_PM_RECEIVER,
+			     TWL4030_PM_RECEIVER_VUSB1V8_TYPE, 0x00);
 
 	/* disable access to power configuration registers */
-	twl4030_i2c_write_u8(TWL4030_CHIP_PM_MASTER, 0x00,
-			     TWL4030_PM_MASTER_PROTECT_KEY);
+	twl4030_i2c_write_u8(TWL4030_CHIP_PM_MASTER,
+			     TWL4030_PM_MASTER_PROTECT_KEY, 0x00);
 }
 
 static void twl4030_phy_power(void)
diff --git a/include/twl4030.h b/include/twl4030.h
index 5aa1841..aca695d 100644
--- a/include/twl4030.h
+++ b/include/twl4030.h
@@ -638,7 +638,7 @@
  *   examples are TWL4030_PM_RECEIVER_VMMC1_DEV_GRP and
  *   TWL4030_LED_LEDEN.
  */
-static inline int twl4030_i2c_write_u8(u8 chip_no, u8 val, u8 reg)
+static inline int twl4030_i2c_write_u8(u8 chip_no, u8 reg, u8 val)
 {
 	return i2c_write(chip_no, reg, 1, &val, 1);
 }