Hi, This part int patch-4.7.2-rc1.xz looks like a broken merge:
--- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -9700,6 +9700,8 @@ static void broadwell_set_cdclk(struct drm_device *dev, int cdclk) I915_WRITE(CDCLK_FREQ, DIV_ROUND_CLOSEST(cdclk, 1000) - 1); + I915_WRITE(CDCLK_FREQ, DIV_ROUND_CLOSEST(cdclk, 1000) - 1); + intel_update_cdclk(dev); WARN(cdclk != dev_priv->cdclk_freq, Regards, Koos Vriezen