diff --git a/drivers/regulator/mt6397-regulator.c b/drivers/regulator/mt6397-regulator.c
index 269c2a6028e8..d51e98ce1138 100644
--- a/drivers/regulator/mt6397-regulator.c
+++ b/drivers/regulator/mt6397-regulator.c
@@ -13,9 +13,7 @@
 #include <linux/regulator/machine.h>
 #include <linux/regulator/mt6397-regulator.h>
 #include <linux/regulator/of_regulator.h>
-
-#define MT6397_BUCK_MODE_AUTO	0
-#define MT6397_BUCK_MODE_FORCE_PWM	1
+#include <dt-bindings/regulator/mediatek,mt6397-regulator.h>
 
 /*
  * MT6397 regulators' information
diff --git a/include/dt-bindings/regulator/mediatek,mt6397-regulator.h b/include/dt-bindings/regulator/mediatek,mt6397-regulator.h
new file mode 100644
index 000000000000..99869a8665cf
--- /dev/null
+++ b/include/dt-bindings/regulator/mediatek,mt6397-regulator.h
@@ -0,0 +1,15 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+#ifndef _DT_BINDINGS_REGULATOR_MEDIATEK_MT6397_H_
+#define _DT_BINDINGS_REGULATOR_MEDIATEK_MT6397_H_
+
+/*
+ * Buck mode constants which may be used in devicetree properties (eg.
+ * regulator-initial-mode, regulator-allowed-modes).
+ * See the manufacturer's datasheet for more information on these modes.
+ */
+
+#define MT6397_BUCK_MODE_AUTO		0
+#define MT6397_BUCK_MODE_FORCE_PWM	1
+
+#endif