Also said in this issue: https://github.com/photonstorm/phaser/issues/3415
I have a texture atlas that packs together all my tilesets(10 of them at the moment*), and I need to load them into Phaser TileSet so I can use it to generate static and dynamic layers. Seems like there is no frame option on .addTilesetImage and .createStaticLayer
Partially fixed here: https://github.com/photonstorm/phaser/issues/4302 , no support for trimming though.