diff --git a/bdk/ianos/ianos.c b/bdk/ianos/ianos.c
index 606b46f9..12a46442 100644
--- a/bdk/ianos/ianos.c
+++ b/bdk/ianos/ianos.c
@@ -21,7 +21,6 @@
 #include "elfload/elfload.h"
 #include <module.h>
 #include <mem/heap.h>
-#include <power/max7762x.h>
 #include <storage/sd.h>
 #include <utils/types.h>
 
diff --git a/bdk/power/bm92t36.c b/bdk/power/bm92t36.c
index eda7db06..39b65dd4 100644
--- a/bdk/power/bm92t36.c
+++ b/bdk/power/bm92t36.c
@@ -55,7 +55,7 @@
 #define STATUS1_INSERT      BIT(7)  // Cable inserted.
 
 #define VER_36     0x36
-#define MAX_ROHM  0x4B5
+#define MAN_ROHM  0x4B5
 #define DEV_BM92T 0x3B0
 
 #define PDO_TYPE_FIXED  0
@@ -89,10 +89,10 @@ int bm92t36_get_version(u32 *value)
 	if (value)
 		*value = (dev << 16) | version;
 
-	if (version == VER_36 && man == MAX_ROHM && dev == DEV_BM92T)
+	if (version == VER_36 && man == MAN_ROHM && dev == DEV_BM92T)
 	 	return 0;
 	else
-		return -1;
+		return 1;
 }
 
 void bm92t36_get_source_info(bool *inserted, usb_pd_objects_t *usb_pd)
diff --git a/bdk/power/bq24193.c b/bdk/power/bq24193.c
index 73b31f1f..ea4d5825 100644
--- a/bdk/power/bq24193.c
+++ b/bdk/power/bq24193.c
@@ -34,7 +34,7 @@ int bq24193_get_version(u32 *value)
 	if (data == 0x2F)
 		return 0;
 	else
-		return -1;
+		return 1;
 }
 
 int bq24193_get_property(enum BQ24193_reg_prop prop, int *value)
@@ -162,7 +162,7 @@ int bq24193_get_property(enum BQ24193_reg_prop prop, int *value)
 		*value = (data & BQ24193_VENDORPART_PN_MASK) >> 3;
 		break;
 	default:
-		return -1;
+		return 1;
 	}
 	return 0;
 }
diff --git a/bdk/power/max17050.c b/bdk/power/max17050.c
index e17800a8..d4c868ac 100644
--- a/bdk/power/max17050.c
+++ b/bdk/power/max17050.c
@@ -69,7 +69,7 @@ int max17050_get_version(u32 *value)
 	if (data == 0x00AC)
 		return 0;
 	else
-		return -1;
+		return 1;
 }
 
 int max17050_get_property(enum MAX17050_reg reg, int *value)
@@ -138,7 +138,7 @@ int max17050_get_property(enum MAX17050_reg reg, int *value)
 		*value = (int)(s16)data * 15625 / ADJ_RSENSE_MOHM / 10; /* Units of LSB = 1.5625uV / Rsense = 156.25uA */
 		break;
 	default:
-		return -1;
+		return 1;
 	}
 	return 0;
 }
@@ -247,7 +247,7 @@ static void _max17050_set_por_bit(u16 value)
 	_max17050_write_verify_reg(MAX17050_STATUS, value);
 }
 
-int max17050_fix_configuration()
+void max17050_fix_configuration()
 {
 	/* Init phase, set the POR bit */
 	_max17050_set_por_bit(STATUS_POR_BIT);
@@ -281,8 +281,6 @@ int max17050_fix_configuration()
 
 	// Sets POR, BI, BR.
 	_max17050_set_por_bit(0x8801);
-
-	return 0;
 }
 
 void max17050_dump_regs(void *buf)
diff --git a/bdk/power/max17050.h b/bdk/power/max17050.h
index 25555b4f..acb1338a 100644
--- a/bdk/power/max17050.h
+++ b/bdk/power/max17050.h
@@ -121,7 +121,7 @@ enum MAX17050_reg {
 
 int  max17050_get_version(u32 *value);
 int  max17050_get_property(enum MAX17050_reg reg, int *value);
-int  max17050_fix_configuration();
+void max17050_fix_configuration();
 void max17050_dump_regs(void *buf);
 
 #endif /* __MAX17050_H_ */
diff --git a/bdk/power/max7762x.c b/bdk/power/max7762x.c
index 6a2ffb04..fa087052 100644
--- a/bdk/power/max7762x.c
+++ b/bdk/power/max7762x.c
@@ -166,7 +166,7 @@ int max77620_regulator_get_status(u32 id)
 int max77620_regulator_config_fps(u32 id)
 {
 	if (id > REGULATOR_LDO8)
-		return 0;
+		return 1;
 
 	const max77620_regulator_t *reg = &_pmic_regulators[id];
 
@@ -177,22 +177,22 @@ int max77620_regulator_config_fps(u32 id)
 		(reg->fps.pu_period << MAX77620_FPS_PU_PERIOD_SHIFT) |
 		(reg->fps.pd_period << MAX77620_FPS_PD_PERIOD_SHIFT));
 
-	return 1;
+	return 0;
 }
 
 int max7762x_regulator_set_voltage(u32 id, u32 uv)
 {
 	if (id > REGULATOR_MAX)
-		return 0;
+		return 1;
 
 	const max77620_regulator_t *reg = &_pmic_regulators[id];
 
 	if (uv < reg->uv_min || uv > reg->uv_max)
-		return 0;
+		return 1;
 
 	u8 addr = _max7762x_get_i2c_address(id);
 	if (!addr)
-		return 0;
+		return 1;
 
 	// Calculate voltage multiplier.
 	u32 mult = (uv + reg->uv_step - 1 - reg->uv_min) / reg->uv_step;
@@ -209,7 +209,7 @@ int max7762x_regulator_set_voltage(u32 id, u32 uv)
 	// Wait for ramp up/down delay.
 	usleep(1000);
 
-	return 1;
+	return 0;
 }
 
 int max7762x_regulator_enable(u32 id, bool enable)
@@ -220,7 +220,7 @@ int max7762x_regulator_enable(u32 id, bool enable)
 	u8 enable_shift;
 
 	if (id > REGULATOR_MAX)
-		return 0;
+		return 1;
 
 	const max77620_regulator_t *reg = &_pmic_regulators[id];
 
@@ -252,12 +252,12 @@ int max7762x_regulator_enable(u32 id, bool enable)
 		enable_shift = reg->enable.shift;
 		break;
 	default:
-		return 0;
+		return 1;
 	}
 
 	u8 addr = _max7762x_get_i2c_address(id);
 	if (!addr)
-		return 0;
+		return 1;
 
 	// Read and enable/disable.
 	u8 val = i2c_recv_byte(I2C_5, addr, reg_addr);
@@ -272,7 +272,7 @@ int max7762x_regulator_enable(u32 id, bool enable)
 	// Wait for enable/disable ramp delay.
 	usleep(1000);
 
-	return 1;
+	return 0;
 }
 
 void max77620_config_gpio(u32 gpio_id, bool enable)