model binding in laravel php gives error

I'ld update the passenger details for that i'm using model binding to auto populate the fields. Here is my view code,

{!! Form::model($edit, ['method' => 'PATCH','route' => 
['PassengerController@update', $edit->id]]) !!}

It shows the error Route [PassengerController@update] not defined

And Controller code,

public function update(Request $request,$id)
{

         move::find($id)->update($request->all());

    return redirect()->route('passenger')

                    ->with('success','Post updated successfully');

} 

I can't understand the model binding route,Can anyone help me

via Chebli Mohamed