From mboxrd@z Thu Jan  1 00:00:00 1970
From: Tomi Valkeinen <tomi.valkeinen@ti.com>
Subject: Re: OMAP PM constraint to disable OPP50
Date: Mon, 27 Feb 2012 19:41:11 +0200
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To: Raghu <raghavendra.kh@gmail.com>
Cc: Kevin Hilman <khilman@ti.com>, Paul Walmsley <paul@pwsan.com>, linux-omap mailing list <linux-omap@vger.kernel.org>


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On Mon, 2012-02-27 at 11:32 -0600, Raghu wrote:
> On Thu, Feb 23, 2012 at 1:28 AM, Tomi Valkeinen <tomi.valkeinen@ti.com> w=
rote:
> >
> > Hi,
> >
> > This is an old issue, and I've mentioned earlier, but I think we should
> > finally do something about this. Or perhaps this can already be done,
> > but I don't know the solution.
>=20
> I agree with you.
> We need to address the L3 bandwidth requirement for DSS as needed by
> high resolution panels.

That is a different problem. There are to PM constraints from DSS:

- L3 bandwidth, depending on the pixel clock, resolution, color format,
etc.
- Maximum DSS clock frequencies

The first one is not trivial, but it should be possible to implement it
inside omapdss driver. The second one is the problem case my email was
about.

 Tomi


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