]> git.baikalelectronics.ru Git - kernel.git/commit
drm/i915: Reduce CHV DDL multiplier to 16/8
authorVille Syrjälä <ville.syrjala@linux.intel.com>
Thu, 5 Mar 2015 19:19:41 +0000 (21:19 +0200)
committerDaniel Vetter <daniel.vetter@ffwll.ch>
Tue, 17 Mar 2015 21:30:01 +0000 (22:30 +0100)
commit1085d49e59309e1c616452d8d04eca3ef07a22cf
tree8a2046e9ac133e17eadf682f6cecad826481016e
parentd64fb1e305b6c9f2ff514a85d066815874ee7d47
drm/i915: Reduce CHV DDL multiplier to 16/8

Apparently we must yet halve the DDL drain latency from what we're
using currently. This little nugget is not in any spec, but came
down through the grapevine.

This makes the displays a bit more stable. Not quite fully stable but at
least they don't fall over immediately on driver load.

v2: Update high_precision in valleyview_update_sprite_wm() too (Jesse)

Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
drivers/gpu/drm/i915/i915_reg.h
drivers/gpu/drm/i915/intel_pm.c