[Intel-gfx] [PATCH 1/3] drm/i915: Remove 10% cdclk guardband from BXT

[ville.syrjala at linux.intel.com]

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

BXT doesn't need any cdclk guardband, so don't use any.

Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
---
 drivers/gpu/drm/i915/intel_display.c | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index bc1907e..b8095be 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -5937,16 +5937,15 @@ static int broxton_calc_cdclk(struct drm_i915_private *dev_priv,
 {
 	/*
 	 * FIXME:
-	 * - remove the guardband, it's not needed on BXT
 	 * - set 19.2MHz bypass frequency if there are no active pipes
 	 */
-	if (max_pixclk > 576000*9/10)
+	if (max_pixclk > 576000)
 		return 624000;
-	else if (max_pixclk > 384000*9/10)
+	else if (max_pixclk > 384000)
 		return 576000;
-	else if (max_pixclk > 288000*9/10)
+	else if (max_pixclk > 288000)
 		return 384000;
-	else if (max_pixclk > 144000*9/10)
+	else if (max_pixclk > 144000)
 		return 288000;
 	else
 		return 144000;
-- 
2.4.10