drm/i915: Respect p2 divider minimum limit on VLV

VLV2_DPLL_mphy_hsdpll_frequency_table_ww6_rev1p1.xlsm tells us that the
minimum p2 divider is 2. Use that limit on the code.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Ville Syrjälä 2013-09-24 21:26:27 +03:00 • committed by Daniel Vetter
commit 889059d8f0