[Skiboot] [PATCH] phb3: Trick to allow control of the PCIe link width and speed

[Stewart Smith]

Benjamin Herrenschmidt <benh at kernel.crashing.org> writes:
> This implements a hook inside OPAL that catches 16 and 32 bit writes
> to the link status register of the PHB.
>
> It allows you to write a new speed or a new width, and OPAL will then
> cause the PHB to renegociate.

As discussed f2f, merged to master as of
aed1fbe848ec7dcfef5c2831ab779ae9c21b41f6


-- 
Stewart Smith
OPAL Architect, IBM.