diff --git a/overlay/frameworks/base/core/res/res/values/config.xml b/overlay/frameworks/base/core/res/res/values/config.xml
index 74e25ac..9f48b63 100644
--- a/overlay/frameworks/base/core/res/res/values/config.xml
+++ b/overlay/frameworks/base/core/res/res/values/config.xml
@@ -362,4 +362,19 @@
     <!-- Boolean indicating whether the HWC setColorTransform function can be performed efficiently
          in hardware. -->
     <bool name="config_setColorTransformAccelerated">true</bool>
+
+    <!-- The default peak refresh rate for a given device. -->
+    <integer name="config_defaultPeakRefreshRate">120</integer>
+
+    <!-- Not allow to switch to higher refresh rate when (display, ambient) brightness falls into
+         the region defined by the two arrays -->
+    <integer-array name="config_brightnessThresholdsOfPeakRefreshRate">
+        <item>-1</item>
+    </integer-array>
+    <integer-array name="config_ambientThresholdsOfPeakRefreshRate">
+        <item>-1</item>
+    </integer-array>
+
+    <!-- default refresh rate in the zone defined by brightness and ambient thresholds -->
+    <integer name="config_defaultRefreshRateInZone">120</integer>
 </resources>
diff --git a/overlay/frameworks/base/packages/SystemUI/res/values/config.xml b/overlay/frameworks/base/packages/SystemUI/res/values/config.xml
index 8871c09..bf3c3de 100644
--- a/overlay/frameworks/base/packages/SystemUI/res/values/config.xml
+++ b/overlay/frameworks/base/packages/SystemUI/res/values/config.xml
@@ -22,4 +22,7 @@
 <resources>
     <!-- Doze: does this device support STATE_DOZE?  -->
     <bool name="doze_display_state_supported">true</bool>
+
+    <!-- Preferred refresh rate at keyguard, if supported by the display -->
+    <integer name="config_keyguardRefreshRate">120</integer>
 </resources>