diff --git a/os_if/linux/qca_vendor.h b/os_if/linux/qca_vendor.h
index 2a0a032cd4..6dd3608285 100644
--- a/os_if/linux/qca_vendor.h
+++ b/os_if/linux/qca_vendor.h
@@ -8120,6 +8120,15 @@ enum qca_wlan_vendor_attr_wifi_test_config {
 	 */
 	QCA_WLAN_VENDOR_ATTR_WIFI_TEST_CONFIG_FILS_DISCOVERY_FRAMES_TX = 44,
 
+	/* 8-bit unsigned value to configure the driver/firmware to enable or
+	 * disable full bandwidth UL MU-MIMO subfield in the HE PHY capabilities
+	 * information field.
+	 * 0 - Disable full bandwidth UL MU-MIMO subfield
+	 * 1 - Enable full bandwidth UL MU-MIMO subfield
+	 * This attribute is used to configure the testbed device.
+	 */
+	QCA_WLAN_VENDOR_ATTR_WIFI_TEST_CONFIG_FULL_BW_UL_MU_MIMO = 45,
+
 	/* keep last */
 	QCA_WLAN_VENDOR_ATTR_WIFI_TEST_CONFIG_AFTER_LAST,
 	QCA_WLAN_VENDOR_ATTR_WIFI_TEST_CONFIG_MAX =