diff --git a/services/core/java/com/android/server/display/DisplayDeviceConfig.java b/services/core/java/com/android/server/display/DisplayDeviceConfig.java
index ac9400d0d96fc..c0c286b7e72cd 100644
--- a/services/core/java/com/android/server/display/DisplayDeviceConfig.java
+++ b/services/core/java/com/android/server/display/DisplayDeviceConfig.java
@@ -154,6 +154,8 @@ import javax.xml.datatype.DatatypeConfigurationException;
  *      <refreshRate>
  *        <lowerBlockingZoneConfigs>
  *          <defaultRefreshRate>75</defaultRefreshRate>
+ *          <defaultRefreshRateInHbmHdr>75</defaultRefreshRateInHbmHdr>
+ *          <defaultRefreshRateInHbmSunlight>75</defaultRefreshRateInHbmSunlight>
  *          <blockingZoneThreshold>
  *            <displayBrightnessPoint>
  *              <lux>50</lux>
@@ -429,6 +431,7 @@ public class DisplayDeviceConfig {
     private static final long STABLE_FLAG = 1L << 62;
     private static final int DEFAULT_PEAK_REFRESH_RATE = 0;
     private static final int DEFAULT_REFRESH_RATE = 60;
+    private static final int DEFAULT_REFRESH_RATE_IN_HBM = 0;
     private static final int DEFAULT_LOW_REFRESH_RATE = 60;
     private static final int DEFAULT_HIGH_REFRESH_RATE = 0;
     private static final int[] DEFAULT_BRIGHTNESS_THRESHOLDS = new int[]{};
@@ -608,6 +611,15 @@ public class DisplayDeviceConfig {
      */
     private int mDefaultRefreshRate = DEFAULT_REFRESH_RATE;
 
+    /**
+     * Default refresh rate while the device has high brightness mode enabled for HDR.
+     */
+    private int mDefaultRefreshRateInHbmHdr = DEFAULT_REFRESH_RATE_IN_HBM;
+
+    /**
+     * Default refresh rate while the device has high brightness mode enabled for Sunlight.
+     */
+    private int mDefaultRefreshRateInHbmSunlight = DEFAULT_REFRESH_RATE_IN_HBM;
     /**
      * Default refresh rate in the high zone defined by brightness and ambient thresholds.
      * If non-positive, then the refresh rate is unchanged even if thresholds are configured.
@@ -1348,8 +1360,7 @@ public class DisplayDeviceConfig {
      * @return Default refresh rate while the device has high brightness mode enabled for HDR.
      */
     public int getDefaultRefreshRateInHbmHdr() {
-        return mContext.getResources().getInteger(
-            R.integer.config_defaultRefreshRateInHbmHdr);
+        return mDefaultRefreshRateInHbmHdr;
     }
 
     /**
@@ -1357,8 +1368,7 @@ public class DisplayDeviceConfig {
      * high lux.
      */
     public int getDefaultRefreshRateInHbmSunlight() {
-        return mContext.getResources().getInteger(
-            R.integer.config_defaultRefreshRateInHbmSunlight);
+        return mDefaultRefreshRateInHbmSunlight;
     }
 
     /**
@@ -1540,6 +1550,8 @@ public class DisplayDeviceConfig {
                 + ", mDefaultPeakRefreshRate= " + mDefaultPeakRefreshRate
                 + ", mDefaultRefreshRate= " + mDefaultRefreshRate
                 + ", mRefreshRateZoneProfiles= " + mRefreshRateZoneProfiles
+                + ", mDefaultRefreshRateInHbmHdr= " + mDefaultRefreshRateInHbmHdr
+                + ", mDefaultRefreshRateInHbmSunlight= " + mDefaultRefreshRateInHbmSunlight
                 + ", mLowDisplayBrightnessThresholds= "
                 + Arrays.toString(mLowDisplayBrightnessThresholds)
                 + ", mLowAmbientBrightnessThresholds= "
@@ -1866,6 +1878,7 @@ public class DisplayDeviceConfig {
                         : refreshRateConfigs.getHigherBlockingZoneConfigs();
         loadPeakDefaultRefreshRate(refreshRateConfigs);
         loadDefaultRefreshRate(refreshRateConfigs);
+        loadDefaultRefreshRateInHbm(refreshRateConfigs);
         loadLowerRefreshRateBlockingZones(lowerBlockingZoneConfig);
         loadHigherRefreshRateBlockingZones(higherBlockingZoneConfig);
         loadRefreshRateZoneProfiles(refreshRateConfigs);
@@ -1902,7 +1915,27 @@ public class DisplayDeviceConfig {
             mRefreshRateZoneProfiles.put(
                     zone.getId(),
                     new SurfaceControl.RefreshRateRange(
-                            range.getMinimum().floatValue(), range.getMaximum().floatValue()));
+                    range.getMinimum().floatValue(), range.getMaximum().floatValue()));
+        }
+    }
+
+    private void loadDefaultRefreshRateInHbm(RefreshRateConfigs refreshRateConfigs) {
+        if (refreshRateConfigs != null
+                && refreshRateConfigs.getDefaultRefreshRateInHbmHdr() != null) {
+            mDefaultRefreshRateInHbmHdr = refreshRateConfigs.getDefaultRefreshRateInHbmHdr()
+                    .intValue();
+        } else {
+            mDefaultRefreshRateInHbmHdr = mContext.getResources().getInteger(
+                    R.integer.config_defaultRefreshRateInHbmHdr);
+        }
+
+        if (refreshRateConfigs != null
+                && refreshRateConfigs.getDefaultRefreshRateInHbmSunlight() != null) {
+            mDefaultRefreshRateInHbmSunlight =
+                    refreshRateConfigs.getDefaultRefreshRateInHbmSunlight().intValue();
+        } else {
+            mDefaultRefreshRateInHbmSunlight = mContext.getResources().getInteger(
+                R.integer.config_defaultRefreshRateInHbmSunlight);
         }
     }
 
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 ef5aa604279b6..9260d2b4194ab 100644
--- a/services/core/xsd/display-device-config/display-device-config.xsd
+++ b/services/core/xsd/display-device-config/display-device-config.xsd
@@ -481,6 +481,14 @@
                     minOccurs="0" maxOccurs="1">
             <xs:annotation name="final"/>
         </xs:element>
+        <xs:element name="defaultRefreshRateInHbmHdr" type="xs:nonNegativeInteger"
+                    minOccurs="0" maxOccurs="1">
+            <xs:annotation name="final"/>
+        </xs:element>
+        <xs:element name="defaultRefreshRateInHbmSunlight" type="xs:nonNegativeInteger"
+                    minOccurs="0" maxOccurs="1">
+            <xs:annotation name="final"/>
+        </xs:element>
         <xs:element name="lowerBlockingZoneConfigs" type="blockingZoneConfig"
                     minOccurs="0" 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 ed9f95962f683..e81c27d94c88a 100644
--- a/services/core/xsd/display-device-config/schema/current.txt
+++ b/services/core/xsd/display-device-config/schema/current.txt
@@ -192,11 +192,15 @@ package com.android.server.display.config {
     ctor public RefreshRateConfigs();
     method public final java.math.BigInteger getDefaultPeakRefreshRate();
     method public final java.math.BigInteger getDefaultRefreshRate();
+    method public final java.math.BigInteger getDefaultRefreshRateInHbmHdr();
+    method public final java.math.BigInteger getDefaultRefreshRateInHbmSunlight();
     method public final com.android.server.display.config.BlockingZoneConfig getHigherBlockingZoneConfigs();
     method public final com.android.server.display.config.BlockingZoneConfig getLowerBlockingZoneConfigs();
     method public final com.android.server.display.config.RefreshRateZoneProfiles getRefreshRateZoneProfiles();
     method public final void setDefaultPeakRefreshRate(java.math.BigInteger);
     method public final void setDefaultRefreshRate(java.math.BigInteger);
+    method public final void setDefaultRefreshRateInHbmHdr(java.math.BigInteger);
+    method public final void setDefaultRefreshRateInHbmSunlight(java.math.BigInteger);
     method public final void setHigherBlockingZoneConfigs(com.android.server.display.config.BlockingZoneConfig);
     method public final void setLowerBlockingZoneConfigs(com.android.server.display.config.BlockingZoneConfig);
     method public final void setRefreshRateZoneProfiles(com.android.server.display.config.RefreshRateZoneProfiles);
diff --git a/services/tests/servicestests/src/com/android/server/display/DisplayDeviceConfigTest.java b/services/tests/servicestests/src/com/android/server/display/DisplayDeviceConfigTest.java
index 5ebc901fae666..fdfcd81cbef92 100644
--- a/services/tests/servicestests/src/com/android/server/display/DisplayDeviceConfigTest.java
+++ b/services/tests/servicestests/src/com/android/server/display/DisplayDeviceConfigTest.java
@@ -157,13 +157,13 @@ public final class DisplayDeviceConfigTest {
         assertEquals(90, mDisplayDeviceConfig.getDefaultHighBlockingZoneRefreshRate());
         assertEquals(85, mDisplayDeviceConfig.getDefaultPeakRefreshRate());
         assertEquals(45, mDisplayDeviceConfig.getDefaultRefreshRate());
-
         assertEquals(2, mDisplayDeviceConfig.getRefreshRangeProfiles().size());
         assertEquals(60, mDisplayDeviceConfig.getRefreshRange("test1").min, SMALL_DELTA);
         assertEquals(60, mDisplayDeviceConfig.getRefreshRange("test1").max, SMALL_DELTA);
         assertEquals(80, mDisplayDeviceConfig.getRefreshRange("test2").min, SMALL_DELTA);
         assertEquals(90, mDisplayDeviceConfig.getRefreshRange("test2").max, SMALL_DELTA);
-
+        assertEquals(82, mDisplayDeviceConfig.getDefaultRefreshRateInHbmHdr());
+        assertEquals(83, mDisplayDeviceConfig.getDefaultRefreshRateInHbmSunlight());
         assertArrayEquals(new int[]{45, 55},
                 mDisplayDeviceConfig.getLowDisplayBrightnessThresholds());
         assertArrayEquals(new int[]{50, 60},
@@ -575,6 +575,8 @@ public final class DisplayDeviceConfigTest {
                 +               "</refreshRateRange>\n"
                 +           "</refreshRateZoneProfile>\n"
                 +       "</refreshRateZoneProfiles>"
+                +       "<defaultRefreshRateInHbmHdr>82</defaultRefreshRateInHbmHdr>\n"
+                +       "<defaultRefreshRateInHbmSunlight>83</defaultRefreshRateInHbmSunlight>\n"
                 +       "<lowerBlockingZoneConfigs>\n"
                 +           "<defaultRefreshRate>75</defaultRefreshRate>\n"
                 +           "<blockingZoneThreshold>\n"