diff --git a/realm/include/realm_da_helpers.h b/realm/include/realm_da_helpers.h
new file mode 100644
index 0000000..65428b4
--- /dev/null
+++ b/realm/include/realm_da_helpers.h
@@ -0,0 +1,39 @@
+/*
+ * Copyright (c) 2025, Arm Limited. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
+ */
+
+#ifndef REALM_DA_HELPERS_H
+#define REALM_DA_HELPERS_H
+
+#include <realm_rsi.h>
+
+/*
+ * Currently assigning one device is supported, for more than one device the VMM
+ * view of vdev_id and Realm view of device_id must match
+ */
+#define RDEV_ID			(0x0UL)
+
+#define RDEV_TDISP_VERSION_MAX	(0x10)
+
+struct rdev {
+	unsigned long id;
+	unsigned long inst_id;
+};
+
+unsigned long realm_rdev_init(struct rdev *rdev, unsigned long rdev_id);
+unsigned long realm_rsi_rdev_start(struct rdev *rdev);
+unsigned long realm_rsi_rdev_stop(struct rdev *rdev);
+unsigned long realm_rsi_rdev_get_interface_report(struct rdev *rdev);
+unsigned long realm_rsi_rdev_get_state(struct rdev *rdev);
+unsigned long realm_rsi_rdev_lock(struct rdev *rdev);
+int realm_verify_device_attestation(struct rdev *rdev,
+				    struct rsi_dev_info *rdev_info);
+unsigned long realm_rsi_rdev_get_measurements(struct rdev *rdev,
+					      struct rsi_dev_measure_params *mparams);
+unsigned long realm_rsi_rdev_get_info(struct rdev *rdev,
+					struct rsi_dev_info *rdev_info);
+
+#endif /* REALM_DA_HELPERS_H */