diff --git a/plat/mediatek/mt8183/drivers/pmic/pmic.h b/plat/mediatek/mt8183/drivers/pmic/pmic.h
new file mode 100644
index 0000000..d62c6da
--- /dev/null
+++ b/plat/mediatek/mt8183/drivers/pmic/pmic.h
@@ -0,0 +1,24 @@
+/*
+ * Copyright (c) 2019, MediaTek Inc. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef PMIC_H
+#define PMIC_H
+
+enum {
+	PMIC_TMA_KEY = 0x03a8,
+	PMIC_PWRHOLD = 0x0a08,
+	PMIC_PSEQ_ELR11 = 0x0a62
+};
+
+enum {
+	PMIC_RG_SDN_DLY_ENB = 1U << 10
+};
+
+/* external API */
+void wk_pmic_enable_sdn_delay(void);
+void pmic_power_off(void);
+
+#endif /* PMIC_H */