diff --git a/include/axp152.h b/include/axp152.h
index 3e5ccbd..9d205f8 100644
--- a/include/axp152.h
+++ b/include/axp152.h
@@ -3,6 +3,18 @@
  *
  * SPDX-License-Identifier:	GPL-2.0+
  */
+
+enum axp152_reg {
+	AXP152_CHIP_VERSION = 0x3,
+	AXP152_DCDC2_VOLTAGE = 0x23,
+	AXP152_DCDC3_VOLTAGE = 0x27,
+	AXP152_DCDC4_VOLTAGE = 0x2B,
+	AXP152_LDO2_VOLTAGE = 0x2A,
+	AXP152_SHUTDOWN = 0x32,
+};
+
+#define AXP152_POWEROFF			(1 << 7)
+
 int axp152_set_dcdc2(int mvolt);
 int axp152_set_dcdc3(int mvolt);
 int axp152_set_dcdc4(int mvolt);