diff --git a/api/v1alpha1/operatorconfig_types.go b/api/v1alpha1/operatorconfig_types.go
index 46d57916..27559299 100644
--- a/api/v1alpha1/operatorconfig_types.go
+++ b/api/v1alpha1/operatorconfig_types.go
@@ -23,9 +23,13 @@ import (
 // OperatorConfigSpec defines the desired state of OperatorConfig
 type OperatorConfigSpec struct {
 	// Operator's log level
+	//+kubebuilder:validation:Optional
+	//+kubebuilder:validation:Minimum=0
+	//+kubebuilder:validation:Maximum=2
 	LogLevel int `json:"logLevel,omitempty"`
 
 	// Allow overwrite of hardcoded defaults for any driver managed by this operator
+	//+kubebuilder:validation:Optional
 	DriverSpecDefaults *DriverSpec `json:"driverSpecDefaults,omitempty"`
 }
 
diff --git a/config/crd/bases/csi.ceph.io_operatorconfigs.yaml b/config/crd/bases/csi.ceph.io_operatorconfigs.yaml
index 9d480911..99dc81f5 100644
--- a/config/crd/bases/csi.ceph.io_operatorconfigs.yaml
+++ b/config/crd/bases/csi.ceph.io_operatorconfigs.yaml
@@ -6912,6 +6912,8 @@ spec:
                 type: object
               logLevel:
                 description: Operator's log level
+                maximum: 2
+                minimum: 0
                 type: integer
             type: object
           status: