Radeon 580 and Linux kernel driver amdgpu errors.

I have SAPPHIRE NITRO+ Radeon™ RX 580 8GD5 Limited Edition and my OS is Fedora 24 x86-64 with the default open source AMD Radeon driver.

 

In the kernel log the following errors are found:

 

    May 17 21:53:00 kernel: ATOM BIOS: E366

    May 17 21:53:00 kernel: Can't find requested voltage id in vdd_dep_on_sclk table!

    May 17 21:53:00 kernel: VDDCI is larger than max VDDCI in VDDCI Voltage Table!

 

These errors originate from source file drivers/gpu/drm/amd/powerplay/hwmgr/hwmgr.c which has AMD copyright in it. This is the source for an older kernel version than that of Fedora 24, but it is good enough to establish the provenance of these error messages.

 

Why do I see these errors and how to fix them please?