Where does “Asia” come from?

Asia comes from Ancient Greek Ἀσῐ́ᾱ, which is attested in Mycenaean Greek as 𐀀𐀯𐀹𐀊, though the original meaning remains unknown.

Asia (English): A daughter of Oceanus and Tethys, the wife of the Titan Iapetus, and mother of Atlas, Prometheus, Epimetheus and Menoetius