diff --git a/cmds/bootanimation/BootAnimation.cpp b/cmds/bootanimation/BootAnimation.cpp
index 1f4a64f5c7f16..f9317eba4e274 100644
--- a/cmds/bootanimation/BootAnimation.cpp
+++ b/cmds/bootanimation/BootAnimation.cpp
@@ -764,6 +764,7 @@ bool BootAnimation::threadLoop() {
     // We have no bootanimation file, so we use the stock android logo
     // animation.
     if (mZipFileName.isEmpty()) {
+        ALOGD("No animation file");
         result = android();
     } else {
         result = movie();
@@ -1476,6 +1477,10 @@ bool BootAnimation::playAnimation(const Animation& animation) {
                     part.backgroundColor[2],
                     1.0f);
 
+            ALOGD("Playing files = %s/%s, Requested repeat = %d, playUntilComplete = %s",
+                    animation.fileName.string(), part.path.string(), part.count,
+                    part.playUntilComplete ? "true" : "false");
+
             // For the last animation, if we have progress indicator from
             // the system, display it.
             int currentProgress = android::base::GetIntProperty(PROGRESS_PROP_NAME, 0);
@@ -1609,6 +1614,9 @@ bool BootAnimation::playAnimation(const Animation& animation) {
         }
     }
 
+    ALOGD("%sAnimationShownTiming End time: %" PRId64 "ms", mShuttingDown ? "Shutdown" : "Boot",
+            elapsedRealtime());
+
     return true;
 }
 
@@ -1684,6 +1692,8 @@ BootAnimation::Animation* BootAnimation::loadAnimation(const String8& fn) {
         return nullptr;
     }
 
+    ALOGD("%s is loaded successfully", fn.string());
+
     Animation *animation =  new Animation;
     animation->fileName = fn;
     animation->zip = zip;
diff --git a/telecomm/java/android/telecom/Call.java b/telecomm/java/android/telecom/Call.java
index d94fafc6a5bf6..980ea5cd7f8cc 100644
--- a/telecomm/java/android/telecom/Call.java
+++ b/telecomm/java/android/telecom/Call.java
@@ -1476,12 +1476,21 @@ public final class Call {
         /**
          * Invoked when the RTT session failed to initiate for some reason, including rejection
          * by the remote party.
+         * <p>
+         * This callback will ONLY be invoked to report a failure related to a user initiated
+         * session modification request (i.e. {@link Call#sendRttRequest()}).
+         * <p>
+         * If a call is initiated with {@link TelecomManager#EXTRA_START_CALL_WITH_RTT} specified,
+         * the availability of RTT can be determined by checking {@link Details#PROPERTY_RTT}
+         * once the call enters state {@link Details#STATE_ACTIVE}.
+         *
          * @param call The call which the RTT initiation failure occurred on.
          * @param reason One of the status codes defined in
-         *               {@link android.telecom.Connection.RttModifyStatus}, with the exception of
-         *               {@link android.telecom.Connection.RttModifyStatus#SESSION_MODIFY_REQUEST_SUCCESS}.
+         *      {@link android.telecom.Connection.RttModifyStatus}, with the exception of
+         *      {@link android.telecom.Connection.RttModifyStatus#SESSION_MODIFY_REQUEST_SUCCESS}.
          */
-        public void onRttInitiationFailure(Call call, int reason) {}
+        public void onRttInitiationFailure(Call call,
+                @android.telecom.Connection.RttModifyStatus.RttSessionModifyStatus int reason) {}
 
         /**
          * Invoked when Call handover from one {@link PhoneAccount} to other {@link PhoneAccount}
diff --git a/telecomm/java/android/telecom/Connection.java b/telecomm/java/android/telecom/Connection.java
index 46454860ca955..49ad58550db8f 100644
--- a/telecomm/java/android/telecom/Connection.java
+++ b/telecomm/java/android/telecom/Connection.java
@@ -1400,6 +1400,18 @@ public abstract class Connection extends Conferenceable {
          * Session modify request rejected by remote user.
          */
         public static final int SESSION_MODIFY_REQUEST_REJECTED_BY_REMOTE = 5;
+
+
+        /**@hide*/
+        @Retention(RetentionPolicy.SOURCE)
+        @IntDef(prefix = "SESSION_MODIFY_REQUEST_", value = {
+                SESSION_MODIFY_REQUEST_SUCCESS,
+                SESSION_MODIFY_REQUEST_FAIL,
+                SESSION_MODIFY_REQUEST_INVALID,
+                SESSION_MODIFY_REQUEST_TIMED_OUT,
+                SESSION_MODIFY_REQUEST_REJECTED_BY_REMOTE
+        })
+        public @interface RttSessionModifyStatus {}
     }
 
     /**