Update entity on cart page programmatically Drupal Commerce
Assuming that you want to display the full view result and add some extra content to your cart, put the following lines in a file named views-view--commerce-cart-form.tpl.php :

if($view-&gt;current_display == 'default'){//OR your display
  //dsm($view);
  print $rows;
  print '&lt;div&gt;MY CUSTOM CONTENT&lt;/div&gt;';
}


Check views-view.tpl.php doc to see available variables.

Otherwise, have a look at Commerce Cart View Override :


  This module provides the ability to override the default cart page
  view for Drupal Commerce.