diff --git a/drivers/staging/greybus/svc.c b/drivers/staging/greybus/svc.c
index 96b3027db528..cac9789b8f67 100644
--- a/drivers/staging/greybus/svc.c
+++ b/drivers/staging/greybus/svc.c
@@ -253,6 +253,27 @@ int gb_svc_intf_eject(struct gb_svc *svc, u8 intf_id)
 	return 0;
 }
 
+int gb_svc_intf_vsys_set(struct gb_svc *svc, u8 intf_id, bool enable)
+{
+	/* FIXME: implement */
+
+	return 0;
+}
+
+int gb_svc_intf_refclk_set(struct gb_svc *svc, u8 intf_id, bool enable)
+{
+	/* FIXME: implement */
+
+	return 0;
+}
+
+int gb_svc_intf_unipro_set(struct gb_svc *svc, u8 intf_id, bool enable)
+{
+	/* FIXME: implement */
+
+	return 0;
+}
+
 int gb_svc_dme_peer_get(struct gb_svc *svc, u8 intf_id, u16 attr, u16 selector,
 			u32 *value)
 {
diff --git a/drivers/staging/greybus/svc.h b/drivers/staging/greybus/svc.h
index 72bc716bf2fe..055948ce9e2b 100644
--- a/drivers/staging/greybus/svc.h
+++ b/drivers/staging/greybus/svc.h
@@ -69,6 +69,9 @@ int gb_svc_connection_create(struct gb_svc *svc, u8 intf1_id, u16 cport1_id,
 void gb_svc_connection_destroy(struct gb_svc *svc, u8 intf1_id, u16 cport1_id,
 			       u8 intf2_id, u16 cport2_id);
 int gb_svc_intf_eject(struct gb_svc *svc, u8 intf_id);
+int gb_svc_intf_vsys_set(struct gb_svc *svc, u8 intf_id, bool enable);
+int gb_svc_intf_refclk_set(struct gb_svc *svc, u8 intf_id, bool enable);
+int gb_svc_intf_unipro_set(struct gb_svc *svc, u8 intf_id, bool enable);
 int gb_svc_dme_peer_get(struct gb_svc *svc, u8 intf_id, u16 attr, u16 selector,
 			u32 *value);
 int gb_svc_dme_peer_set(struct gb_svc *svc, u8 intf_id, u16 attr, u16 selector,