[Arm-dev] MP3-AR0 - Limiting SATA Speed

[Gordan Bobic]

Is there a way to tell u-boot (or Tianocore) on the MP30-AR0 to limit 
the SATA port speeds to 3Gbit instead of auto-negotiating 6Gbit? I have 
a case with a SATA backplane that doesn't work properly at 6Gbit, and 
this sometimes causes the boot to fail. If I can get it to get as far as 
loading the Linux kernel, it's OK as I can specify a boot parameter 
there to limit it, but a non-trivial fraction of the time it doesn't get 
that far without erroring out.

TIA.

Gordan