drm/i915: Use 200MHz cdclk on vlv when all pipes are off
authorVille Syrjälä <ville.syrjala@linux.intel.com>
Fri, 13 Jun 2014 10:37:51 +0000 (13:37 +0300)
committerDaniel Vetter <daniel.vetter@ffwll.ch>
Mon, 7 Jul 2014 09:24:47 +0000 (11:24 +0200)
commite37c67a1c5743ac7fc7f946290fee96f84248ca7
tree035478bcc66abf056bcea99cbf487852cf204c68
parent29dc7ef3bbd3a78d35154f8b103b2f8a724f7986
drm/i915: Use 200MHz cdclk on vlv when all pipes are off

Drop the cdclk frequency to 200MHz on vlv when all pipes are off. In
theory we should be able to use 200MHz also when the pixel clock is at
most 90% of 200MHz. However in practice all we seem to get is a solid
color picture or an otherwise corrupted display.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
drivers/gpu/drm/i915/intel_display.c