diff --git a/power/aidl/aidl_api/android.hardware.power/current/android/hardware/power/WorkDuration.aidl b/power/aidl/aidl_api/android.hardware.power/current/android/hardware/power/WorkDuration.aidl
index 45013dd..e86cd40 100644
--- a/power/aidl/aidl_api/android.hardware.power/current/android/hardware/power/WorkDuration.aidl
+++ b/power/aidl/aidl_api/android.hardware.power/current/android/hardware/power/WorkDuration.aidl
@@ -36,7 +36,4 @@
 parcelable WorkDuration {
   long timeStampNanos;
   long durationNanos;
-  long workPeriodStartTimestampNanos;
-  long cpuDurationNanos;
-  long gpuDurationNanos;
 }
diff --git a/power/aidl/android/hardware/power/WorkDuration.aidl b/power/aidl/android/hardware/power/WorkDuration.aidl
index fcd638b..a06a058 100644
--- a/power/aidl/android/hardware/power/WorkDuration.aidl
+++ b/power/aidl/android/hardware/power/WorkDuration.aidl
@@ -23,30 +23,8 @@
      * sample was measured.
      */
     long timeStampNanos;
-
     /**
-     * Total work duration in nanoseconds.
+     * Work duration in nanoseconds.
      */
     long durationNanos;
-
-    /**
-     * Timestamp in nanoseconds based on CLOCK_MONOTONIC when the work starts.
-     * The work period start timestamp could be zero if the call is from
-     * the legacy SDK/NDK reportActualWorkDuration API.
-     */
-    long workPeriodStartTimestampNanos;
-
-    /**
-     * CPU work duration in nanoseconds.
-     * The CPU work duration could be the same as the total work duration if
-     * the call is from the legacy SDK/NDK reportActualWorkDuration API.
-     */
-    long cpuDurationNanos;
-
-    /**
-     * GPU work duration in nanoseconds.
-     * The GPU work duration could be zero if the call is from the legacy
-     * SDK/NDK reportActualWorkDuration API.
-     */
-    long gpuDurationNanos;
 }