Powered USB hub not charging phone. Kernel options?

I got a powered USB 2.0 hub (ET-UP900). As power source I am using the phones charger. But if I connect the hub with my phone (SM-C115) it does not charge. If I connect the charger directly it works.

My first thought was the hub does not provide enough power. But if I do the same thing with a tablet (SM-P905), which requires more power, it does work.

Also strange: If the hub is powered it does not work. If the hub is not powered it works just fine.

As I am using a custom build kernel I am looking a dmesg and fiddling with kernel options and driver to find the correct setting.

Maybe someone can give me a hint what might work?

Alternative: Any cable I can plugin in between to charge the phone and use the usb hub?