diff --git a/usb/aidl/aidl_api/android.hardware.usb/current/android/hardware/usb/AltModeData.aidl b/usb/aidl/aidl_api/android.hardware.usb/current/android/hardware/usb/AltModeData.aidl
index 8e9dd00..d25ee84 100644
--- a/usb/aidl/aidl_api/android.hardware.usb/current/android/hardware/usb/AltModeData.aidl
+++ b/usb/aidl/aidl_api/android.hardware.usb/current/android/hardware/usb/AltModeData.aidl
@@ -40,5 +40,7 @@
     android.hardware.usb.DisplayPortAltModeStatus partnerSinkStatus = android.hardware.usb.DisplayPortAltModeStatus.UNKNOWN;
     android.hardware.usb.DisplayPortAltModeStatus cableStatus = android.hardware.usb.DisplayPortAltModeStatus.UNKNOWN;
     android.hardware.usb.DisplayPortAltModePinAssignment pinAssignment = android.hardware.usb.DisplayPortAltModePinAssignment.NONE;
+    boolean hpd = false;
+    android.hardware.usb.LinkTrainingStatus linkTrainingStatus = android.hardware.usb.LinkTrainingStatus.UNKNOWN;
   }
 }
diff --git a/usb/aidl/aidl_api/android.hardware.usb/current/android/hardware/usb/LinkTrainingStatus.aidl b/usb/aidl/aidl_api/android.hardware.usb/current/android/hardware/usb/LinkTrainingStatus.aidl
new file mode 100644
index 0000000..1f0b2dc
--- /dev/null
+++ b/usb/aidl/aidl_api/android.hardware.usb/current/android/hardware/usb/LinkTrainingStatus.aidl
@@ -0,0 +1,40 @@
+/*
+ * Copyright (C) 2023 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.usb;
+@Backing(type="int") @VintfStability
+enum LinkTrainingStatus {
+  UNKNOWN = 0,
+  SUCCESS = 1,
+  FAILURE = 2,
+}
diff --git a/usb/aidl/android/hardware/usb/AltModeData.aidl b/usb/aidl/android/hardware/usb/AltModeData.aidl
index e103ff9..0b1e06a 100644
--- a/usb/aidl/android/hardware/usb/AltModeData.aidl
+++ b/usb/aidl/android/hardware/usb/AltModeData.aidl
@@ -18,6 +18,7 @@
 
 import android.hardware.usb.DisplayPortAltModePinAssignment;
 import android.hardware.usb.DisplayPortAltModeStatus;
+import android.hardware.usb.LinkTrainingStatus;
 
 @VintfStability
 union AltModeData {
@@ -42,6 +43,18 @@
          * negotiated between the device, port partner, and cable.
          */
         DisplayPortAltModePinAssignment pinAssignment = DisplayPortAltModePinAssignment.NONE;
+        /**
+         * Indicates DisplayPort Hot Plug Detection (HPD) status for a partner
+         * sink device. If true, then a DisplayPort Alt Mode partner sink is
+         * connected and powered on, and if false, the partner sink is not
+         * powered or no partner sink is connected.
+         */
+        boolean hpd = false;
+        /**
+         * Indicates the current status of DisplayPort link training over USB-C
+         * for the attached DisplayPort Alt Mode partner sink.
+         */
+        LinkTrainingStatus linkTrainingStatus = LinkTrainingStatus.UNKNOWN;
     }
     DisplayPortAltModeData displayPortAltModeData;
 }
diff --git a/usb/aidl/android/hardware/usb/LinkTrainingStatus.aidl b/usb/aidl/android/hardware/usb/LinkTrainingStatus.aidl
new file mode 100644
index 0000000..9f3b3c3
--- /dev/null
+++ b/usb/aidl/android/hardware/usb/LinkTrainingStatus.aidl
@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2023 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.usb;
+
+@VintfStability
+@Backing(type="int")
+/**
+ * Indicates the current status of DisplayPort link training over USB-C for the
+ * attached DisplayPort Alt Mode partner sink as described in DisplayPort
+ * v1.4/2.1.
+ */
+enum LinkTrainingStatus {
+    /*
+     * Indicates the link training result is not available because link training
+     * has not completed or initiated yet.
+     */
+    UNKNOWN = 0,
+    /*
+     * Indicates that link training has completed and optimal settings for data
+     * transmission between the sink and source device have successfully been
+     * negotiated.
+     */
+    SUCCESS = 1,
+    /*
+     * Indicates that link training has failed and the link initialization has
+     * terminated.
+     */
+    FAILURE = 2,
+}
diff --git a/usb/aidl/vts/VtsAidlUsbTargetTest.cpp b/usb/aidl/vts/VtsAidlUsbTargetTest.cpp
index 480c826..e9aa65b 100644
--- a/usb/aidl/vts/VtsAidlUsbTargetTest.cpp
+++ b/usb/aidl/vts/VtsAidlUsbTargetTest.cpp
@@ -49,6 +49,7 @@
 using ::aidl::android::hardware::usb::DisplayPortAltModeStatus;
 using ::aidl::android::hardware::usb::IUsb;
 using ::aidl::android::hardware::usb::IUsbCallback;
+using ::aidl::android::hardware::usb::LinkTrainingStatus;
 using ::aidl::android::hardware::usb::PlugOrientation;
 using ::aidl::android::hardware::usb::PortDataRole;
 using ::aidl::android::hardware::usb::PortMode;
@@ -724,6 +725,10 @@
                   (int)DisplayPortAltModePinAssignment::NONE);
       EXPECT_TRUE((int)displayPortAltModeData.pinAssignment <=
                   (int)DisplayPortAltModePinAssignment::F);
+
+      EXPECT_TRUE((int)displayPortAltModeData.linkTrainingStatus >=
+                  (int)LinkTrainingStatus::UNKNOWN);
+      EXPECT_TRUE((int)displayPortAltModeData.pinAssignment <= (int)LinkTrainingStatus::FAILURE);
     }
   }