linux-kernel - Re: [PATCH 9/9] drm/i915: Initialize PCH refclks at modeset init time

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Message-ID: <yunoby597o2.fsf@aiko.keithp.com>
Date:	Tue, 27 Sep 2011 11:11:57 -0700
From:	Keith Packard <keithp@...thp.com>
To:	Chris Wilson <chris@...is-wilson.co.uk>,
	Dave Airlie <airlied@...hat.com>
Cc:	linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org,
	intel-gfx@...ts.freedesktop.org
Subject: Re: [PATCH 9/9] drm/i915: Initialize PCH refclks at modeset init time

On Tue, 27 Sep 2011 17:56:39 +0100, Chris Wilson <chris@...is-wilson.co.uk> wrote:

> Ah, now I see why we moved from using the active configuration earlier. ;-)

My evil plan is revealed!

> Doesn't this prevent us from ever using SSC though, as virtually every
> single PCH machine has HDMI encoders that haven't been masked out through
> the chicken fuses or VBT?

That wasn't my intent -- the SSC source gets modulated whenever the VBT
table says it can, so when the panel uses the SSC source, it will get
SSC. Did I mess something up here? Or is it just some interaction with
the mode setting code that I didn't get right?

-- 
keith.packard@...el.com

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