[Intel-gfx] [PATCH] drm/i915: Adjust BXT HDMI port clock limits

[ville.syrjala at linux.intel.com]

From: Ville Syrjälä <ville.syrjala at linux.intel.com>

Since
 commit e62925567c7926e78bc8ca976cde5c28ea265a49
 Author: Vandana Kannan <vandana.kannan at 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 at intel.com>
Cc: Imre Deak <imre.deak at intel.com>
Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
---
 drivers/gpu/drm/i915/intel_hdmi.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_hdmi.c b/drivers/gpu/drm/i915/intel_hdmi.c
index c7e912b..70bad5b 100644
--- a/drivers/gpu/drm/i915/intel_hdmi.c
+++ b/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;
-- 
2.3.6