Hierarchical Select Parents blocks

I am using facet filter to filter views values . I have a taxonomy term using widget type Simple Hierarchical Select . I want to be able to filter parent and child terms both in facet filter block

Tax A
-- Tax A child
---- Tax A child of child

I want to use each one of the above as a filter in the facet filter block

How Can I achieve it?
I have ticked 'index hierarchy ' but it just shows the deepest term e.g. "Tax A child of child"

I can used the deepest level on my facets. But I want to be able to used the parents as well.