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drm/i915: Bump HDMI min port clock to 25 MHz
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Increase the HDMI port minimum port clock from 20 to 25 MHz. This is
is the minimum listed in the DVI/HDMI specs, and it's also the
documented minimum DPLL frequency for most of our platforms.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-and-tested-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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Ville Syrjälä authored and Daniel Vetter committed Jul 6, 2015
1 parent 398a017 commit 6fd765d
Showing 1 changed file with 1 addition and 1 deletion.
2 changes: 1 addition & 1 deletion drivers/gpu/drm/i915/intel_hdmi.c
Original file line number Diff line number Diff line change
Expand Up @@ -1175,7 +1175,7 @@ intel_hdmi_mode_valid(struct drm_connector *connector,
if (clock > hdmi_portclock_limit(intel_attached_hdmi(connector),
true))
return MODE_CLOCK_HIGH;
if (clock < 20000)
if (clock < 25000)
return MODE_CLOCK_LOW;

if (mode->flags & DRM_MODE_FLAG_DBLSCAN)
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