[Bug 108773] i915.fastboot=1 is broken on Thinkpad S1 Yoga (Haswell)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=108773

--- Comment #26 from Ville Syrjala <ville.syrjala at linux.intel.com> ---
Created attachment 144444
  --> https://bugs.freedesktop.org/attachment.cgi?id=144444&action=edit
[PATCH] drm/i915: Do not touch the PCH SSC reference if a PLL is  using it

This should avoid clobbering the PCH SSC reference during driver load.

Please test and post the resulting dmesg with drm.debug=0xe so that I can
confirm the logic works as intended.

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