diff --git a/include/linux/soundwire/sdw.h b/include/linux/soundwire/sdw.h
index 688b40e65c89..28745b9ba279 100644
--- a/include/linux/soundwire/sdw.h
+++ b/include/linux/soundwire/sdw.h
@@ -403,6 +403,8 @@ int sdw_slave_read_prop(struct sdw_slave *slave);
  * SDW Slave Structures and APIs
  */
 
+#define SDW_IGNORED_UNIQUE_ID 0xFF
+
 /**
  * struct sdw_slave_id - Slave ID
  * @mfg_id: MIPI Manufacturer ID
@@ -418,7 +420,7 @@ struct sdw_slave_id {
 	__u16 mfg_id;
 	__u16 part_id;
 	__u8 class_id;
-	__u8 unique_id:4;
+	__u8 unique_id;
 	__u8 sdw_version:4;
 };