diff --git a/services/core/java/com/android/server/display/AutomaticBrightnessController.java b/services/core/java/com/android/server/display/AutomaticBrightnessController.java
index d647757..6a36fbe 100644
--- a/services/core/java/com/android/server/display/AutomaticBrightnessController.java
+++ b/services/core/java/com/android/server/display/AutomaticBrightnessController.java
@@ -366,9 +366,10 @@
     }
 
     /**
-     * @return The current brightness recommendation calculated from the current conditions.
-     * @param brightnessEvent Event object to populate with details about why the specific
-     *                        brightness was chosen.
+     * @param brightnessEvent Holds details about how the brightness is calculated.
+     *
+     * @return The current automatic brightness recommended value. Populates brightnessEvent
+     *         parameters with details about how the brightness was calculated.
      */
     public float getAutomaticScreenBrightness(BrightnessEvent brightnessEvent) {
         if (brightnessEvent != null) {
diff --git a/services/core/java/com/android/server/display/DisplayDeviceConfig.java b/services/core/java/com/android/server/display/DisplayDeviceConfig.java
index 486cd28..2464eb0 100644
--- a/services/core/java/com/android/server/display/DisplayDeviceConfig.java
+++ b/services/core/java/com/android/server/display/DisplayDeviceConfig.java
@@ -184,6 +184,7 @@
  *        <defaultRefreshRateInHbmSunlight>75</defaultRefreshRateInHbmSunlight>
  *        <lowerBlockingZoneConfigs>
  *          <defaultRefreshRate>75</defaultRefreshRate>
+ *          <refreshRateThermalThrottlingId>id_of_a_throttling_map</refreshRateThermalThrottlingId>
  *          <blockingZoneThreshold>
  *            <displayBrightnessPoint>
  *              <lux>50</lux>
@@ -722,6 +723,12 @@
     private float[] mHighDisplayBrightnessThresholds = DEFAULT_BRIGHTNESS_THRESHOLDS;
     private float[] mHighAmbientBrightnessThresholds = DEFAULT_BRIGHTNESS_THRESHOLDS;
 
+    /**
+     * Thermal throttling maps for the low and high blocking zones.
+     */
+    private String mLowBlockingZoneThermalMapId = null;
+    private String mHighBlockingZoneThermalMapId = null;
+
     private final HashMap<String, ThermalBrightnessThrottlingData>
             mThermalBrightnessThrottlingDataMapByThrottlingId = new HashMap<>();
 
@@ -1526,6 +1533,13 @@
     }
 
     /**
+     * @return The refresh rate thermal map for low blocking zone.
+     */
+    public SparseArray<SurfaceControl.RefreshRateRange> getLowBlockingZoneThermalMap() {
+        return getThermalRefreshRateThrottlingData(mLowBlockingZoneThermalMapId);
+    }
+
+    /**
      * @return An array of high display brightness thresholds. This, in combination with high
      * ambient brightness thresholds help define buckets in which the refresh rate switching is not
      * allowed.
@@ -1548,6 +1562,13 @@
     }
 
     /**
+     * @return The refresh rate thermal map for high blocking zone.
+     */
+    public SparseArray<SurfaceControl.RefreshRateRange> getHighBlockingZoneThermalMap() {
+        return getThermalRefreshRateThrottlingData(mHighBlockingZoneThermalMapId);
+    }
+
+    /**
      * @return A mapping from screen off brightness sensor readings to lux values. This estimates
      * the ambient lux when the screen is off to determine the initial brightness
      */
@@ -1664,6 +1685,8 @@
                 + ", mDefaultRefreshRateInHbmHdr= " + mDefaultRefreshRateInHbmHdr
                 + ", mDefaultRefreshRateInHbmSunlight= " + mDefaultRefreshRateInHbmSunlight
                 + ", mRefreshRateThrottlingMap= " + mRefreshRateThrottlingMap
+                + ", mLowBlockingZoneThermalMapId= " + mLowBlockingZoneThermalMapId
+                + ", mHighBlockingZoneThermalMapId= " + mHighBlockingZoneThermalMapId
                 + "\n"
                 + ", mLowDisplayBrightnessThresholds= "
                 + Arrays.toString(mLowDisplayBrightnessThresholds)
@@ -2114,9 +2137,13 @@
     }
 
     /**
-     * Loads the refresh rate configurations pertaining to the upper blocking zones.
+     * Loads the refresh rate configurations pertaining to the lower blocking zones.
      */
     private void loadLowerRefreshRateBlockingZones(BlockingZoneConfig lowerBlockingZoneConfig) {
+        if (lowerBlockingZoneConfig != null) {
+            mLowBlockingZoneThermalMapId =
+                    lowerBlockingZoneConfig.getRefreshRateThermalThrottlingId();
+        }
         loadLowerBlockingZoneDefaultRefreshRate(lowerBlockingZoneConfig);
         loadLowerBrightnessThresholds(lowerBlockingZoneConfig);
     }
@@ -2125,6 +2152,10 @@
      * Loads the refresh rate configurations pertaining to the upper blocking zones.
      */
     private void loadHigherRefreshRateBlockingZones(BlockingZoneConfig upperBlockingZoneConfig) {
+        if (upperBlockingZoneConfig != null) {
+            mHighBlockingZoneThermalMapId =
+                    upperBlockingZoneConfig.getRefreshRateThermalThrottlingId();
+        }
         loadHigherBlockingZoneDefaultRefreshRate(upperBlockingZoneConfig);
         loadHigherBrightnessThresholds(upperBlockingZoneConfig);
     }
diff --git a/services/core/java/com/android/server/display/mode/DisplayModeDirector.java b/services/core/java/com/android/server/display/mode/DisplayModeDirector.java
index 82755b6..6079a32 100644
--- a/services/core/java/com/android/server/display/mode/DisplayModeDirector.java
+++ b/services/core/java/com/android/server/display/mode/DisplayModeDirector.java
@@ -1540,6 +1540,21 @@
         private final Injector mInjector;
         private final Handler mHandler;
 
+        private final IThermalEventListener.Stub mThermalListener =
+                new IThermalEventListener.Stub() {
+                    @Override
+                    public void notifyThrottling(Temperature temp) {
+                        @Temperature.ThrottlingStatus int currentStatus = temp.getStatus();
+                        synchronized (mLock) {
+                            if (mThermalStatus != currentStatus) {
+                                mThermalStatus = currentStatus;
+                            }
+                            onBrightnessChangedLocked();
+                        }
+                    }
+                };
+        private boolean mThermalRegistered;
+
         // Enable light sensor only when mShouldObserveAmbientLowChange is true or
         // mShouldObserveAmbientHighChange is true, screen is on, peak refresh rate
         // changeable and low power mode off. After initialization, these states will
@@ -1548,9 +1563,17 @@
         private boolean mRefreshRateChangeable = false;
         private boolean mLowPowerModeEnabled = false;
 
+        @Nullable
+        private SparseArray<RefreshRateRange> mLowZoneRefreshRateForThermals;
         private int mRefreshRateInLowZone;
+
+        @Nullable
+        private SparseArray<RefreshRateRange> mHighZoneRefreshRateForThermals;
         private int mRefreshRateInHighZone;
 
+        @GuardedBy("mLock")
+        private @Temperature.ThrottlingStatus int mThermalStatus = Temperature.THROTTLING_NONE;
+
         BrightnessObserver(Context context, Handler handler, Injector injector) {
             mContext = context;
             mHandler = handler;
@@ -1649,6 +1672,8 @@
                                 R.integer.config_defaultRefreshRateInZone)
                         : displayDeviceConfig.getDefaultLowBlockingZoneRefreshRate();
             }
+            mLowZoneRefreshRateForThermals = displayDeviceConfig == null ? null
+                    : displayDeviceConfig.getLowBlockingZoneThermalMap();
             mRefreshRateInLowZone = refreshRateInLowZone;
         }
 
@@ -1668,6 +1693,8 @@
                                 R.integer.config_fixedRefreshRateInHighZone)
                         : displayDeviceConfig.getDefaultHighBlockingZoneRefreshRate();
             }
+            mHighZoneRefreshRateForThermals = displayDeviceConfig == null ? null
+                    : displayDeviceConfig.getHighBlockingZoneThermalMap();
             mRefreshRateInHighZone = refreshRateInHighZone;
         }
 
@@ -2117,6 +2144,15 @@
             if (insideLowZone) {
                 refreshRateVote =
                         Vote.forPhysicalRefreshRates(mRefreshRateInLowZone, mRefreshRateInLowZone);
+                if (mLowZoneRefreshRateForThermals != null) {
+                    RefreshRateRange range = SkinThermalStatusObserver
+                            .findBestMatchingRefreshRateRange(mThermalStatus,
+                                    mLowZoneRefreshRateForThermals);
+                    if (range != null) {
+                        refreshRateVote =
+                                Vote.forPhysicalRefreshRates(range.min, range.max);
+                    }
+                }
                 refreshRateSwitchingVote = Vote.forDisableRefreshRateSwitching();
             }
 
@@ -2126,6 +2162,15 @@
                 refreshRateVote =
                         Vote.forPhysicalRefreshRates(mRefreshRateInHighZone,
                                 mRefreshRateInHighZone);
+                if (mHighZoneRefreshRateForThermals != null) {
+                    RefreshRateRange range = SkinThermalStatusObserver
+                            .findBestMatchingRefreshRateRange(mThermalStatus,
+                                    mHighZoneRefreshRateForThermals);
+                    if (range != null) {
+                        refreshRateVote =
+                                Vote.forPhysicalRefreshRates(range.min, range.max);
+                    }
+                }
                 refreshRateSwitchingVote = Vote.forDisableRefreshRateSwitching();
             }
 
@@ -2184,13 +2229,25 @@
                         + mRefreshRateChangeable);
             }
 
+            boolean registerForThermals = false;
             if ((mShouldObserveAmbientLowChange || mShouldObserveAmbientHighChange)
                      && isDeviceActive() && !mLowPowerModeEnabled && mRefreshRateChangeable) {
                 registerLightSensor();
-
+                registerForThermals = mLowZoneRefreshRateForThermals != null
+                        || mHighZoneRefreshRateForThermals != null;
             } else {
                 unregisterSensorListener();
             }
+
+            if (registerForThermals && !mThermalRegistered) {
+                mThermalRegistered = mInjector.registerThermalServiceListener(mThermalListener);
+            } else if (!registerForThermals && mThermalRegistered) {
+                mInjector.unregisterThermalServiceListener(mThermalListener);
+                mThermalRegistered = false;
+                synchronized (mLock) {
+                    mThermalStatus = Temperature.THROTTLING_NONE; // reset
+                }
+            }
         }
 
         private void registerLightSensor() {
@@ -2823,6 +2880,7 @@
         boolean isDozeState(Display d);
 
         boolean registerThermalServiceListener(IThermalEventListener listener);
+        void unregisterThermalServiceListener(IThermalEventListener listener);
 
         boolean supportsFrameRateOverride();
     }
@@ -2918,6 +2976,19 @@
         }
 
         @Override
+        public void unregisterThermalServiceListener(IThermalEventListener listener) {
+            IThermalService thermalService = getThermalService();
+            if (thermalService == null) {
+                Slog.w(TAG, "Could not unregister thermal status. Service not available");
+            }
+            try {
+                thermalService.unregisterThermalEventListener(listener);
+            } catch (RemoteException e) {
+                Slog.e(TAG, "Failed to unregister thermal status listener", e);
+            }
+        }
+
+        @Override
         public boolean supportsFrameRateOverride() {
             return SurfaceFlingerProperties.enable_frame_rate_override().orElse(true);
         }
diff --git a/services/core/java/com/android/server/display/mode/SkinThermalStatusObserver.java b/services/core/java/com/android/server/display/mode/SkinThermalStatusObserver.java
index 58e1550..b29cda8 100644
--- a/services/core/java/com/android/server/display/mode/SkinThermalStatusObserver.java
+++ b/services/core/java/com/android/server/display/mode/SkinThermalStatusObserver.java
@@ -64,6 +64,20 @@
         mHandler = handler;
     }
 
+    @Nullable
+    public static SurfaceControl.RefreshRateRange findBestMatchingRefreshRateRange(
+            @Temperature.ThrottlingStatus int currentStatus,
+            SparseArray<SurfaceControl.RefreshRateRange> throttlingMap) {
+        SurfaceControl.RefreshRateRange foundRange = null;
+        for (int status = currentStatus; status >= 0; status--) {
+            foundRange = throttlingMap.get(status);
+            if (foundRange != null) {
+                break;
+            }
+        }
+        return foundRange;
+    }
+
     void observe() {
         // if failed to register thermal service listener, don't register display listener
         if (!mInjector.registerThermalServiceListener(this)) {
@@ -228,20 +242,6 @@
         }
     }
 
-    @Nullable
-    private SurfaceControl.RefreshRateRange findBestMatchingRefreshRateRange(
-            @Temperature.ThrottlingStatus int currentStatus,
-            SparseArray<SurfaceControl.RefreshRateRange> throttlingMap) {
-        SurfaceControl.RefreshRateRange foundRange = null;
-        for (int status = currentStatus; status >= 0; status--) {
-            foundRange = throttlingMap.get(status);
-            if (foundRange != null) {
-                break;
-            }
-        }
-        return foundRange;
-    }
-
     private void fallbackReportThrottlingIfNeeded(int displayId,
             @Temperature.ThrottlingStatus int currentStatus) {
         Vote vote = null;
diff --git a/services/core/xsd/display-device-config/display-device-config.xsd b/services/core/xsd/display-device-config/display-device-config.xsd
index 7104a80..b63154d 100644
--- a/services/core/xsd/display-device-config/display-device-config.xsd
+++ b/services/core/xsd/display-device-config/display-device-config.xsd
@@ -579,6 +579,10 @@
                     minOccurs="1" maxOccurs="1">
             <xs:annotation name="final"/>
         </xs:element>
+        <xs:element type ="xs:string" name="refreshRateThermalThrottlingId">
+            <xs:annotation name="nullable"/>
+            <xs:annotation name="final"/>
+        </xs:element>
         <xs:element name="blockingZoneThreshold" type="blockingZoneThreshold"
                     minOccurs="1" maxOccurs="1">
             <xs:annotation name="final"/>
diff --git a/services/core/xsd/display-device-config/schema/current.txt b/services/core/xsd/display-device-config/schema/current.txt
index 507c9dc..426fcb6 100644
--- a/services/core/xsd/display-device-config/schema/current.txt
+++ b/services/core/xsd/display-device-config/schema/current.txt
@@ -17,8 +17,10 @@
     ctor public BlockingZoneConfig();
     method public final com.android.server.display.config.BlockingZoneThreshold getBlockingZoneThreshold();
     method public final java.math.BigInteger getDefaultRefreshRate();
+    method @Nullable public final String getRefreshRateThermalThrottlingId();
     method public final void setBlockingZoneThreshold(com.android.server.display.config.BlockingZoneThreshold);
     method public final void setDefaultRefreshRate(java.math.BigInteger);
+    method public final void setRefreshRateThermalThrottlingId(@Nullable String);
   }
 
   public class BlockingZoneThreshold {
diff --git a/services/tests/displayservicetests/src/com/android/server/display/DisplayDeviceConfigTest.java b/services/tests/displayservicetests/src/com/android/server/display/DisplayDeviceConfigTest.java
index da7a6a1..4752f81 100644
--- a/services/tests/displayservicetests/src/com/android/server/display/DisplayDeviceConfigTest.java
+++ b/services/tests/displayservicetests/src/com/android/server/display/DisplayDeviceConfigTest.java
@@ -268,6 +268,14 @@
                 mDisplayDeviceConfig.getHdrBrightnessFromSdr(0.62f, 1.25f),
                 SMALL_DELTA);
 
+        // Low/High zone thermal maps
+        assertEquals(new SurfaceControl.RefreshRateRange(30, 40),
+                mDisplayDeviceConfig.getLowBlockingZoneThermalMap()
+                .get(Temperature.THROTTLING_CRITICAL));
+        assertEquals(new SurfaceControl.RefreshRateRange(40, 60),
+                mDisplayDeviceConfig.getHighBlockingZoneThermalMap()
+                .get(Temperature.THROTTLING_EMERGENCY));
+
         // Todo: Add asserts for DensityMapping,
         // HighBrightnessModeData AmbientLightSensor, RefreshRateLimitations and ProximitySensor.
     }
@@ -530,6 +538,24 @@
                + "        </refreshRateRange>\n"
                + "    </refreshRateThrottlingPoint>\n"
                + "</refreshRateThrottlingMap>\n"
+               + "<refreshRateThrottlingMap id=\"thermalLow\">\n"
+               + "    <refreshRateThrottlingPoint>\n"
+               + "        <thermalStatus>critical</thermalStatus>\n"
+               + "        <refreshRateRange>\n"
+               + "            <minimum>30</minimum>\n"
+               + "            <maximum>40</maximum>\n"
+               + "        </refreshRateRange>\n"
+               + "    </refreshRateThrottlingPoint>\n"
+               + "</refreshRateThrottlingMap>\n"
+               + "<refreshRateThrottlingMap id=\"thermalHigh\">\n"
+               + "    <refreshRateThrottlingPoint>\n"
+               + "        <thermalStatus>emergency</thermalStatus>\n"
+               + "        <refreshRateRange>\n"
+               + "            <minimum>40</minimum>\n"
+               + "            <maximum>60</maximum>\n"
+               + "        </refreshRateRange>\n"
+               + "    </refreshRateThrottlingPoint>\n"
+               + "</refreshRateThrottlingMap>\n"
                + "<refreshRateThrottlingMap id=\"test\">\n"
                + "    <refreshRateThrottlingPoint>\n"
                + "        <thermalStatus>emergency</thermalStatus>\n"
@@ -822,6 +848,8 @@
                 +       "<defaultRefreshRateInHbmSunlight>83</defaultRefreshRateInHbmSunlight>\n"
                 +       "<lowerBlockingZoneConfigs>\n"
                 +           "<defaultRefreshRate>75</defaultRefreshRate>\n"
+                +           "<refreshRateThermalThrottlingId>thermalLow"
+                +           "</refreshRateThermalThrottlingId>\n"
                 +           "<blockingZoneThreshold>\n"
                 +               "<displayBrightnessPoint>\n"
                 +                   "<lux>50</lux>\n"
@@ -843,6 +871,8 @@
                 +       "</lowerBlockingZoneConfigs>\n"
                 +       "<higherBlockingZoneConfigs>\n"
                 +           "<defaultRefreshRate>90</defaultRefreshRate>\n"
+                +           "<refreshRateThermalThrottlingId>thermalHigh"
+                +           "</refreshRateThermalThrottlingId>\n"
                 +           "<blockingZoneThreshold>\n"
                 +               "<displayBrightnessPoint>\n"
                 +                   "<lux>70</lux>\n"
diff --git a/services/tests/displayservicetests/src/com/android/server/display/mode/DisplayModeDirectorTest.java b/services/tests/displayservicetests/src/com/android/server/display/mode/DisplayModeDirectorTest.java
index 15f13cd..89a1e13 100644
--- a/services/tests/displayservicetests/src/com/android/server/display/mode/DisplayModeDirectorTest.java
+++ b/services/tests/displayservicetests/src/com/android/server/display/mode/DisplayModeDirectorTest.java
@@ -39,6 +39,7 @@
 import static org.mockito.ArgumentMatchers.anyInt;
 import static org.mockito.ArgumentMatchers.eq;
 import static org.mockito.Mockito.any;
+import static org.mockito.Mockito.atLeastOnce;
 import static org.mockito.Mockito.doAnswer;
 import static org.mockito.Mockito.mock;
 import static org.mockito.Mockito.never;
@@ -1100,6 +1101,196 @@
     }
 
     @Test
+    public void testLockFpsForHighZoneWithThermalCondition() throws Exception {
+        // First, configure brightness zones or DMD won't register for sensor data.
+        final FakeDeviceConfig config = mInjector.getDeviceConfig();
+        config.setHighDisplayBrightnessThresholds(new int[] { 200 });
+        config.setHighAmbientBrightnessThresholds(new int[] { 8000 });
+
+        DisplayModeDirector director =
+                createDirectorFromRefreshRateArray(new float[] {60.f, 90.f, 120.f}, 0);
+        setPeakRefreshRate(120 /*fps*/);
+        director.getSettingsObserver().setDefaultRefreshRate(120);
+        director.getBrightnessObserver().setDefaultDisplayState(Display.STATE_ON);
+
+        // Set the thresholds for High Zone
+        DisplayDeviceConfig ddcMock = mock(DisplayDeviceConfig.class);
+        when(ddcMock.getDefaultHighBlockingZoneRefreshRate()).thenReturn(90);
+        when(ddcMock.getHighDisplayBrightnessThresholds()).thenReturn(new float[] { 200 });
+        when(ddcMock.getHighAmbientBrightnessThresholds()).thenReturn(new float[] { 8000 });
+        when(ddcMock.getDefaultLowBlockingZoneRefreshRate()).thenReturn(90);
+        when(ddcMock.getLowDisplayBrightnessThresholds()).thenReturn(new float[] {});
+        when(ddcMock.getLowAmbientBrightnessThresholds()).thenReturn(new float[] {});
+
+        // Set the thermal condition for refresh rate range
+        when(ddcMock.getHighBlockingZoneThermalMap()).thenReturn(
+                new SparseArray<RefreshRateRange>() {{
+                    put(Temperature.THROTTLING_CRITICAL, new RefreshRateRange(60, 60));
+                }}
+        );
+        director.defaultDisplayDeviceUpdated(ddcMock); // set the ddc
+
+        Sensor lightSensor = createLightSensor();
+        SensorManager sensorManager = createMockSensorManager(lightSensor);
+        director.start(sensorManager);
+
+        // Get the display listener so that we can send it new brightness events
+        ArgumentCaptor<DisplayListener> displayListenerCaptor =
+                  ArgumentCaptor.forClass(DisplayListener.class);
+        verify(mInjector).registerDisplayListener(displayListenerCaptor.capture(),
+                any(Handler.class),
+                eq(DisplayManager.EVENT_FLAG_DISPLAY_CHANGED
+                    | DisplayManager.EVENT_FLAG_DISPLAY_BRIGHTNESS));
+        DisplayListener displayListener = displayListenerCaptor.getValue();
+
+        // Get the sensor listener so that we can give it new light sensor events
+        ArgumentCaptor<SensorEventListener> listenerCaptor =
+                ArgumentCaptor.forClass(SensorEventListener.class);
+        verify(sensorManager, Mockito.timeout(TimeUnit.SECONDS.toMillis(1)))
+                .registerListener(
+                        listenerCaptor.capture(),
+                        eq(lightSensor),
+                        anyInt(),
+                        any(Handler.class));
+        SensorEventListener sensorListener = listenerCaptor.getValue();
+
+        // Get the thermal listener so that we can give it new thermal conditions
+        ArgumentCaptor<IThermalEventListener> thermalListenerCaptor =
+                ArgumentCaptor.forClass(IThermalEventListener.class);
+        verify(mInjector, atLeastOnce()).registerThermalServiceListener(
+                thermalListenerCaptor.capture());
+        List<IThermalEventListener> thermalListeners = thermalListenerCaptor.getAllValues();
+
+        setBrightness(100, 100, displayListener);
+        // Sensor reads 2000 lux,
+        sensorListener.onSensorChanged(TestUtils.createSensorEvent(lightSensor, 2000));
+
+        Vote vote = director.getVote(Display.DEFAULT_DISPLAY, Vote.PRIORITY_FLICKER_REFRESH_RATE);
+        assertThat(vote).isNull();
+        vote = director.getVote(Display.DEFAULT_DISPLAY, Vote.PRIORITY_FLICKER_REFRESH_RATE_SWITCH);
+        assertThat(vote).isNull();
+
+        // We expect DisplayModeDirector to act on BrightnessInfo.adjustedBrightness; set only this
+        // parameter to the necessary threshold
+        setBrightness(255, 255, displayListener);
+        // Sensor reads 9000 lux,
+        sensorListener.onSensorChanged(TestUtils.createSensorEvent(lightSensor, 9000));
+
+        vote = director.getVote(Display.DEFAULT_DISPLAY, Vote.PRIORITY_FLICKER_REFRESH_RATE);
+        assertVoteForPhysicalRefreshRate(vote, 90 /*fps*/);
+        vote = director.getVote(Display.DEFAULT_DISPLAY, Vote.PRIORITY_FLICKER_REFRESH_RATE_SWITCH);
+        assertThat(vote).isNotNull();
+        assertThat(vote.disableRefreshRateSwitching).isTrue();
+
+        // Set critical and check new refresh rate
+        Temperature temp = getSkinTemp(Temperature.THROTTLING_CRITICAL);
+        for (var listener : thermalListeners) {
+            listener.notifyThrottling(temp);
+        }
+
+        vote = director.getVote(Display.DEFAULT_DISPLAY, Vote.PRIORITY_FLICKER_REFRESH_RATE);
+        assertVoteForPhysicalRefreshRate(vote, 60 /*fps*/);
+        vote = director.getVote(Display.DEFAULT_DISPLAY, Vote.PRIORITY_FLICKER_REFRESH_RATE_SWITCH);
+        assertThat(vote).isNotNull();
+        assertThat(vote.disableRefreshRateSwitching).isTrue();
+    }
+
+    @Test
+    public void testLockFpsForLowZoneWithThermalCondition() throws Exception {
+        // First, configure brightness zones or DMD won't register for sensor data.
+        final FakeDeviceConfig config = mInjector.getDeviceConfig();
+        config.setHighDisplayBrightnessThresholds(new int[] { 200 });
+        config.setHighAmbientBrightnessThresholds(new int[] { 8000 });
+
+        DisplayModeDirector director =
+                createDirectorFromRefreshRateArray(new float[] {60.f, 90.f, 120.f}, 0);
+        setPeakRefreshRate(120 /*fps*/);
+        director.getSettingsObserver().setDefaultRefreshRate(120);
+        director.getBrightnessObserver().setDefaultDisplayState(Display.STATE_ON);
+
+        // Set the thresholds for Low Zone
+        DisplayDeviceConfig ddcMock = mock(DisplayDeviceConfig.class);
+        when(ddcMock.getDefaultLowBlockingZoneRefreshRate()).thenReturn(90);
+        when(ddcMock.getHighDisplayBrightnessThresholds()).thenReturn(new float[] { 200 });
+        when(ddcMock.getHighAmbientBrightnessThresholds()).thenReturn(new float[] { 8000 });
+        when(ddcMock.getDefaultLowBlockingZoneRefreshRate()).thenReturn(90);
+        when(ddcMock.getLowDisplayBrightnessThresholds()).thenReturn(new float[] { 10 });
+        when(ddcMock.getLowAmbientBrightnessThresholds()).thenReturn(new float[] { 10 });
+
+        // Set the thermal condition for refresh rate range
+        when(ddcMock.getLowBlockingZoneThermalMap()).thenReturn(
+                new SparseArray<RefreshRateRange>() {{
+                    put(Temperature.THROTTLING_CRITICAL, new RefreshRateRange(60, 60));
+                }}
+        );
+        director.defaultDisplayDeviceUpdated(ddcMock); // set the ddc
+
+        Sensor lightSensor = createLightSensor();
+        SensorManager sensorManager = createMockSensorManager(lightSensor);
+        director.start(sensorManager);
+
+        // Get the display listener so that we can send it new brightness events
+        ArgumentCaptor<DisplayListener> displayListenerCaptor =
+                  ArgumentCaptor.forClass(DisplayListener.class);
+        verify(mInjector).registerDisplayListener(displayListenerCaptor.capture(),
+                any(Handler.class),
+                eq(DisplayManager.EVENT_FLAG_DISPLAY_CHANGED
+                    | DisplayManager.EVENT_FLAG_DISPLAY_BRIGHTNESS));
+        DisplayListener displayListener = displayListenerCaptor.getValue();
+
+        // Get the sensor listener so that we can give it new light sensor events
+        ArgumentCaptor<SensorEventListener> listenerCaptor =
+                ArgumentCaptor.forClass(SensorEventListener.class);
+        verify(sensorManager, Mockito.timeout(TimeUnit.SECONDS.toMillis(1)))
+                .registerListener(
+                        listenerCaptor.capture(),
+                        eq(lightSensor),
+                        anyInt(),
+                        any(Handler.class));
+        SensorEventListener sensorListener = listenerCaptor.getValue();
+
+        // Get the thermal listener so that we can give it new thermal conditions
+        ArgumentCaptor<IThermalEventListener> thermalListenerCaptor =
+                ArgumentCaptor.forClass(IThermalEventListener.class);
+        verify(mInjector, atLeastOnce()).registerThermalServiceListener(
+                thermalListenerCaptor.capture());
+        List<IThermalEventListener> thermalListeners = thermalListenerCaptor.getAllValues();
+
+        setBrightness(100, 100, displayListener);
+        // Sensor reads 2000 lux,
+        sensorListener.onSensorChanged(TestUtils.createSensorEvent(lightSensor, 2000));
+
+        Vote vote = director.getVote(Display.DEFAULT_DISPLAY, Vote.PRIORITY_FLICKER_REFRESH_RATE);
+        assertThat(vote).isNull();
+        vote = director.getVote(Display.DEFAULT_DISPLAY, Vote.PRIORITY_FLICKER_REFRESH_RATE_SWITCH);
+        assertThat(vote).isNull();
+
+        // We expect DisplayModeDirector to act on BrightnessInfo.adjustedBrightness; set only this
+        // parameter to the necessary threshold
+        setBrightness(5, 5, displayListener);
+        // Sensor reads 9 lux,
+        sensorListener.onSensorChanged(TestUtils.createSensorEvent(lightSensor, 9));
+
+        vote = director.getVote(Display.DEFAULT_DISPLAY, Vote.PRIORITY_FLICKER_REFRESH_RATE);
+        assertVoteForPhysicalRefreshRate(vote, 90 /*fps*/);
+        vote = director.getVote(Display.DEFAULT_DISPLAY, Vote.PRIORITY_FLICKER_REFRESH_RATE_SWITCH);
+        assertThat(vote).isNotNull();
+        assertThat(vote.disableRefreshRateSwitching).isTrue();
+
+        // Set critical and check new refresh rate
+        Temperature temp = getSkinTemp(Temperature.THROTTLING_CRITICAL);
+        for (var listener : thermalListeners) {
+            listener.notifyThrottling(temp);
+        }
+
+        vote = director.getVote(Display.DEFAULT_DISPLAY, Vote.PRIORITY_FLICKER_REFRESH_RATE);
+        assertVoteForPhysicalRefreshRate(vote, 60 /*fps*/);
+        vote = director.getVote(Display.DEFAULT_DISPLAY, Vote.PRIORITY_FLICKER_REFRESH_RATE_SWITCH);
+        assertThat(vote).isNotNull();
+        assertThat(vote.disableRefreshRateSwitching).isTrue();
+    }
+
+    @Test
     public void testSensorRegistration() {
         // First, configure brightness zones or DMD won't register for sensor data.
         final FakeDeviceConfig config = mInjector.getDeviceConfig();
@@ -2902,6 +3093,10 @@
         }
 
         @Override
+        public void unregisterThermalServiceListener(IThermalEventListener listener) {
+        }
+
+        @Override
         public boolean supportsFrameRateOverride() {
             return true;
         }