diff --git a/os_if/linux/qca_vendor.h b/os_if/linux/qca_vendor.h
index fa8991db9c..1188ddd17a 100644
--- a/os_if/linux/qca_vendor.h
+++ b/os_if/linux/qca_vendor.h
@@ -10933,14 +10933,21 @@ enum qca_wlan_vendor_attr_add_sta_node_params {
  * These values are used by attribute %QCA_VENDOR_ATTR_BTC_CHAIN_MODE of
  * %QCA_NL80211_VENDOR_SUBCMD_BTC_CHAIN_MODE.
  *
- * @QCA_BTC_CHAIN_SHARED: chains of BT and WLAN 2.4G are shared.
- * @QCA_BTC_CHAIN_SEPARATED: chains of BT and WLAN 2.4G are separated.
+ * @QCA_BTC_CHAIN_SHARED: chains of BT and WLAN 2.4 GHz are shared.
+ * @QCA_BTC_CHAIN_SEPARATED_HYBRID: chains of BT and WLAN 2.4 GHz are
+ * separated, hybrid mode.
+ * @QCA_BTC_CHAIN_SEPARATED_FDD: chains of BT and WLAN 2.4 GHz are
+ * separated, fixed FDD mode.
  */
 enum qca_btc_chain_mode {
 	QCA_BTC_CHAIN_SHARED = 0,
-	QCA_BTC_CHAIN_SEPARATED = 1,
+	QCA_BTC_CHAIN_SEPARATED_HYBRID = 1,
+	QCA_BTC_CHAIN_SEPARATED_FDD = 2,
 };
 
+/* deprecated legacy name */
+#define QCA_BTC_CHAIN_SEPARATED QCA_BTC_CHAIN_SEPARATED_HYBRID
+
 /**
  * enum qca_vendor_attr_btc_chain_mode - Specifies attributes for BT coex
  * chain mode.