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drm/i915: Adjust BXT HDMI port clock limits

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Since
 commit e62925567c
 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>
This commit is contained in:
Ville Syrjälä 2015-07-06 14:44:11 +03:00 committed by Daniel Vetter
parent 2be7d540fd
commit 5e6ccc0b3d
1 changed files with 6 additions and 3 deletions
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9
drivers/gpu/drm/i915/intel_hdmi.c
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@ -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;