From mboxrd@z Thu Jan  1 00:00:00 1970
From: Keith Packard <keithp@keithp.com>
Subject: Re: [PATCH] drm/i915: add missing "break"
Date: Mon, 26 Sep 2011 16:05:03 -0700
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On Mon, 26 Sep 2011 13:56:17 -0700, Keith Packard <keithp@keithp.com> wrote:

> So, what I think we should be doing is using display_clock_mode to
> select between ck505 and internal clock source on pre-PCH hardware. For
> PCH hardware, we unconditionally use the ck505 source for the non-SSC
> reference. When we need to drive two outputs and are *not* using ck505,
> then we disable SSC.

Ok, I'm not sure this is trivial -- without CK505, how do we switch from
LVDS to LVDS+VGA (and back)? Seems like we'd have to turn the LVDS off
and back on to play with SSC. Is it worth dealing with that case? Or do
we just ignore SSC on non-CK505 hardware?

=2D-=20
keith.packard@intel.com

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