I found only this one reference manual:https://github.com/96boards/documentation/blob/master/ConsumerEdition/HiKey960/HardwareDocs/HiKey960_SoC_Reference_Manual.pdfBut, unfortunately, it is not enough.
Is it possible to get from somewhere the Hi3660 datasheet?
Yes this is the official one, I think the full datasheet is only available under NDA.
@Loic, Thanks for your comment, but I cannot find the way to contact Hisilicon for such an info. Maybe you know their e-mail address or so? Thanks!