In Drupal 8 (not D7) as noted here How do you limit a text input to only specific content types/fields.

For example, I create a new input type here: admin/config/content/formats and call it "blog_body" and I want it to be the only (or at least default) option for the body field on blog post node type. Preferably it is not available on other nodes too.

Browse other questions tagged or ask your own question.