Re: [PATCH 2/4] EHCI: Support Intel Moorestown MPH and OTG host

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On Wed, 24 Jun 2009 10:39:09 +0800
David Brownell <david-b@xxxxxxxxxxx> wrote:

> > > And please explain acronyms like MRST and MPH, which
> > > seem unique to Intel's stuff.
> > 
> > MRST = Intel Moorestown Platform which is a LPIA (Low power IA) platform
> > MPH = Multi-port Host, this host has integrated port controller logic for
> > multiple host ports (1~6 downstream port(s)). Also it supports LPM (Link Power Management).
> 
> OK.  I suggest the source code say "Intel Moorestown" not "MRST",
> and "Intel Multi-Port Host" not "MPH"..
> 
> Aren't *most* root hubs a "Multi-Port Host" though?  Or is the
> LPM support the big issue?
> 

I think the key point for MPH is it integrates the port controller logic inside the HC. The port control register
(HOSTPCx) is used to control each port's behavior and LPM.

Alek
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