The only accusations of violence ever came from Amber Heard, whom he sued for defamation and won. Anyone watching the trial, including the jurors, could see what a narcissistic liar she is. She's rightfully being ostracized from Hollywood now.
https://en.wikipedia.org/wiki/Johnny_Depp#Other_legal_issues
From what I can find, this is a single revert[1], and that seemed an appropriate revert as it was a single guy saying it on TV with no real substance to it ("I heard that ...").
[1]: https://en.wikipedia.org/w/index.php?title=Jeanne_du_Barry_(...