diff --git a/services/core/java/com/android/server/display/DisplayDeviceConfig.java b/services/core/java/com/android/server/display/DisplayDeviceConfig.java
index 8e01b1434044e..89f1313a59e1b 100644
--- a/services/core/java/com/android/server/display/DisplayDeviceConfig.java
+++ b/services/core/java/com/android/server/display/DisplayDeviceConfig.java
@@ -137,6 +137,8 @@ import javax.xml.datatype.DatatypeConfigurationException;
  *      <refreshRate>
  *        <lowerBlockingZoneConfigs>
  *          <defaultRefreshRate>75</defaultRefreshRate>
+ *          <defaultRefreshRateInHbmHdr>75</defaultRefreshRateInHbmHdr>
+ *          <defaultRefreshRateInHbmSunlight>75</defaultRefreshRateInHbmSunlight>
  *          <blockingZoneThreshold>
  *            <displayBrightnessPoint>
  *              <lux>50</lux>
@@ -404,6 +406,7 @@ 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[]{};
@@ -584,6 +587,15 @@ 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.
@@ -1324,8 +1336,7 @@ 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;
     }
 
     /**
@@ -1333,8 +1344,7 @@ public class DisplayDeviceConfig {
      * high lux.
      */
     public int getDefaultRefreshRateInHbmSunlight() {
-        return mContext.getResources().getInteger(
-            R.integer.config_defaultRefreshRateInHbmSunlight);
+        return mDefaultRefreshRateInHbmSunlight;
     }
 
     /**
@@ -1490,6 +1500,8 @@ public class DisplayDeviceConfig {
                 + ", mDefaultHighBlockingZoneRefreshRate= " + mDefaultHighBlockingZoneRefreshRate
                 + ", mDefaultPeakRefreshRate= " + mDefaultPeakRefreshRate
                 + ", mDefaultRefreshRate= " + mDefaultRefreshRate
+                + ", mDefaultRefreshRateInHbmHdr= " + mDefaultRefreshRateInHbmHdr
+                + ", mDefaultRefreshRateInHbmSunlight= " + mDefaultRefreshRateInHbmSunlight
                 + ", mLowDisplayBrightnessThresholds= "
                 + Arrays.toString(mLowDisplayBrightnessThresholds)
                 + ", mLowAmbientBrightnessThresholds= "
@@ -1805,6 +1817,7 @@ public class DisplayDeviceConfig {
                         : refreshRateConfigs.getHigherBlockingZoneConfigs();
         loadPeakDefaultRefreshRate(refreshRateConfigs);
         loadDefaultRefreshRate(refreshRateConfigs);
+        loadDefaultRefreshRateInHbm(refreshRateConfigs);
         loadLowerRefreshRateBlockingZones(lowerBlockingZoneConfig);
         loadHigherRefreshRateBlockingZones(higherBlockingZoneConfig);
     }
@@ -1829,6 +1842,26 @@ public class DisplayDeviceConfig {
         }
     }
 
+    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);
+        }
+    }
+
     /**
      * Loads the refresh rate configurations pertaining to the upper blocking zones.
      */
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 abe48f894e599..91a11380c81ce 100644
--- a/services/core/xsd/display-device-config/display-device-config.xsd
+++ b/services/core/xsd/display-device-config/display-device-config.xsd
@@ -472,6 +472,14 @@
                     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 2c97af55f0924..1110d86e1fc19 100644
--- a/services/core/xsd/display-device-config/schema/current.txt
+++ b/services/core/xsd/display-device-config/schema/current.txt
@@ -188,10 +188,14 @@ 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 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);
   }
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 d1fbc1e50e830..8f70617a66ea2 100644
--- a/services/tests/servicestests/src/com/android/server/display/DisplayDeviceConfigTest.java
+++ b/services/tests/servicestests/src/com/android/server/display/DisplayDeviceConfigTest.java
@@ -158,6 +158,8 @@ public final class DisplayDeviceConfigTest {
         assertEquals(90, mDisplayDeviceConfig.getDefaultHighBlockingZoneRefreshRate());
         assertEquals(85, mDisplayDeviceConfig.getDefaultPeakRefreshRate());
         assertEquals(45, mDisplayDeviceConfig.getDefaultRefreshRate());
+        assertEquals(82, mDisplayDeviceConfig.getDefaultRefreshRateInHbmHdr());
+        assertEquals(83, mDisplayDeviceConfig.getDefaultRefreshRateInHbmSunlight());
         assertArrayEquals(new int[]{45, 55},
                 mDisplayDeviceConfig.getLowDisplayBrightnessThresholds());
         assertArrayEquals(new int[]{50, 60},
@@ -465,6 +467,8 @@ public final class DisplayDeviceConfigTest {
                 +   "<refreshRate>\n"
                 +       "<defaultRefreshRate>45</defaultRefreshRate>\n"
                 +       "<defaultPeakRefreshRate>85</defaultPeakRefreshRate>\n"
+                +       "<defaultRefreshRateInHbmHdr>82</defaultRefreshRateInHbmHdr>\n"
+                +       "<defaultRefreshRateInHbmSunlight>83</defaultRefreshRateInHbmSunlight>\n"
                 +       "<lowerBlockingZoneConfigs>\n"
                 +           "<defaultRefreshRate>75</defaultRefreshRate>\n"
                 +           "<blockingZoneThreshold>\n"