I only found a Hikey driver from below link.
http://malideveloper.arm.com/resources/drivers/arm-mali-utgard-gpu-user-space-drivers/
Where is the previous release like mali400 r4p0/r5p0/r5p2?
The official route for Mali user-space and kernel drivers is from your chipset manufacturer; the driver is normally customized by them, for example integrating power management. We only support a small number of community development boards via the drivers on Mali Developer Center.
Kind regards, Pete