diff --git a/src/libcamera/control_ids.yaml b/src/libcamera/control_ids.yaml
index 3560d4a8..46a4bd94 100644
--- a/src/libcamera/control_ids.yaml
+++ b/src/libcamera/control_ids.yaml
@@ -273,4 +273,16 @@ controls:
         order in an array of 9 floating point values.
 
       size: [3x3]
+
+  - IspCrop:
+      type: Rectangle
+      description: |
+        Sets the image portion that will be scaled up to form the
+        whole of the final output image. The selection rectangle is
+        expressed in pixel units and defined relatively to the size
+        of the frame described by the SensorOutputSize property.
+
+        This control can be used to implement digital zoom.
+
+        \sa properties::SensorOutputSize
 ...