diff --git a/dts/bindings/power/lowrisc,opentitan-pwrmgr.yaml b/dts/bindings/power/lowrisc,opentitan-pwrmgr.yaml
new file mode 100644
index 0000000..f3ac44c
--- /dev/null
+++ b/dts/bindings/power/lowrisc,opentitan-pwrmgr.yaml
@@ -0,0 +1,12 @@
+# Copyright (c) 2023 Rivos
+# SPDX-License-Identifier: Apache-2.0
+
+description: OpenTitan power management
+
+compatible: "lowrisc,opentitan-pwrmgr"
+
+include: base.yaml
+
+properties:
+  reg:
+    required: true