I will be painting it with patio latex paint. I plan on cleaning with TSP (trisodium phosphate) and then applying a concrete bonding primer. Do I need to acid-etch before painting with primer?

Koski patio: This small, organically shaped, acid-etched concrete patio sits down in the back garden of a corner lot and is surrounded by a large weeping blue atlas cedar and metal screens for ...

The acid-etched precast concrete panels are approximately 25-feet wide and were produced by BPDL in Quebec. (Courtesy DXA Studio) ...