drm/i915: fix FP CB tuning limits for lvds



Only on IBX should we set the limiting factor to 25 unconditionally
for dual-channel mode, on CPT/PPT 25 only applies when the lvds
refclock is 100MHz.

Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

parent 7d0ac5b7

drivers/gpu/drm/i915/intel_display.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -5503,7 +5503,7 @@ static uint32_t ironlake_compute_dpll(struct intel_crtc *intel_crtc,
		if (is_lvds) {
		if ((intel_panel_use_ssc(dev_priv) &&
		dev_priv->lvds_ssc_freq == 100) \|\|
		intel_is_dual_link_lvds(dev))
		(HAS_PCH_IBX(dev) && intel_is_dual_link_lvds(dev)))
		factor = 25;
		} else if (is_sdvo && is_tv)
		factor = 20;