diff --git a/cheetah/overlay/frameworks/base/core/res/res/values/config.xml b/cheetah/overlay/frameworks/base/core/res/res/values/config.xml
index 78ff3c3..511c789 100644
--- a/cheetah/overlay/frameworks/base/core/res/res/values/config.xml
+++ b/cheetah/overlay/frameworks/base/core/res/res/values/config.xml
@@ -67,6 +67,19 @@
         @left
     </string>
 
+    <!-- Not allow to switch to higher refresh rate when display brightness setting is
+         equal or less than this value -->
+    <integer-array name="config_brightnessThresholdsOfPeakRefreshRate">
+        <!-- System brightness for 5 nits: round((5-2)/(1000-2)*(255-1)+1) = 2 -->
+        <item>2</item> <!-- 15% UI brightness -->
+    </integer-array>
+    <integer-array name="config_ambientThresholdsOfPeakRefreshRate">
+        <item>5</item>
+    </integer-array>
+
+    <!-- default refresh rate in the zone defined by birghtness and ambient thresholds -->
+    <integer name="config_defaultRefreshRateInZone">120</integer>
+
     <!-- Array of light sensor LUX values to define our levels for auto backlight brightness support.
       The N entries of this array define N  1 zones as follows:
          Zone 0:        0 <= LUX < array[0]
diff --git a/panther/overlay/frameworks/base/core/res/res/values/config.xml b/panther/overlay/frameworks/base/core/res/res/values/config.xml
index ba927f2..98c75b4 100644
--- a/panther/overlay/frameworks/base/core/res/res/values/config.xml
+++ b/panther/overlay/frameworks/base/core/res/res/values/config.xml
@@ -66,6 +66,21 @@
         @left
     </string>
 
+    <!-- Not allow to switch to higher refresh rate when display brightness setting is
+         equal or less than this value -->
+    <integer-array name="config_brightnessThresholdsOfPeakRefreshRate">
+        <!-- System brightness for 20 nits: round((20-2)/(1000-2)*(255-1)+1) = 6 -->
+        <item>6</item> <!-- 34% UI brightness -->
+        <!-- System brightness for 25 nits: round((25-2)/(1000-2)*(255-1)+1) = 7 -->
+        <item>7</item> <!-- 38% UI brightness -->
+    </integer-array>
+    <integer-array name="config_ambientThresholdsOfPeakRefreshRate">
+        <item>-1</item>
+        <item>20</item>
+    </integer-array>
+    <!-- default refresh rate in the zone defined by birghtness and ambient thresholds -->
+    <integer name="config_defaultRefreshRateInZone">90</integer>
+
     <!-- Array of light sensor LUX values to define our levels for auto backlight brightness support.
       The N entries of this array define N  1 zones as follows:
          Zone 0:        0 <= LUX < array[0]