The branch has been heavily damaged and likely will not recover even if you were to splint it.  Cut off the broken branch evenly.  The tree otherwise looks very healthy, so a little pruning may even help it.  Do you know the cause of the splitting?  A storm?  Just a sudden break?  It would be good to know if there is something affecting the tree that resulted in this damage.  The other branches look healthy, however, so there is probably no major disease or insect at the root of this problem.

For information about how to prune trees, see https://extension.umn.edu/planting-and-growing-guides/pruning-trees-and-shrubs

fell in a storm.  The tree seems otherwise healthy.  It's about 30 years old.  We've had occasional seasons with Cedar Rust, but no other issues.  

Yes - we recommend cutting the damaged branch back close to the trunk.  Prune just beyond the branch collar (swelling) so that the cut is not flush with the trunk.