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

From: Chris Wilson
Date: Tue Sep 27 2011 - 12:56:47 EST


On Mon, 26 Sep 2011 23:11:46 -0700, Keith Packard <keithp@xxxxxxxxxx> wrote:
> The reference clock configuration must be done before any mode setting
> can occur as all outputs must be disabled to change
> anything. Initialize the clocks after turning everything off during
> the initialization process.

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

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?
-Chris

--
Chris Wilson, Intel Open Source Technology Centre
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