drm/i915: Adjust BXT HDMI port clock limits

Since
 commit e62925567c7926e78bc8ca976cde5c28ea265a49
 Author: Vandana Kannan <vandana.kannan@intel.com>
 Date:   Wed Jul 1 17:02:57 2015 +0530

    drm/i915/bxt: BUNs related to port PLL

BXT DPLL can now generate frequencies in the 216-223 MHz range.
Adjust the HDMI port clock checks to account for the reduced range
of invalid frequencies.

Cc: Vandana Kannan <vandana.kannan@intel.com>
Cc: Imre Deak <imre.deak@intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

drivers/gpu/drm/i915/intel_hdmi.c

@@ -1174,9 +1174,12 @@ hdmi_port_clock_valid(struct intel_hdmi *hdmi,
 	if (clock > hdmi_port_clock_limit(hdmi, respect_dvi_limit))
 		return MODE_CLOCK_HIGH;
 
-	/* CHV/BXT DPLL can't generate 216-240 MHz */
-	if ((IS_CHERRYVIEW(dev) || IS_BROXTON(dev)) &&
-	    clock > 216000 && clock < 240000)
+	/* BXT DPLL can't generate 223-240 MHz */
+	if (IS_BROXTON(dev) && clock > 223333 && clock < 240000)
+		return MODE_CLOCK_RANGE;
+
+	/* CHV DPLL can't generate 216-240 MHz */
+	if (IS_CHERRYVIEW(dev) && clock > 216000 && clock < 240000)
 		return MODE_CLOCK_RANGE;
 
 	return MODE_OK;