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(parent: 813b5e6) | patch
drm/i915: Add missing POSTING_READ()s to BXT dbuf enable sequence
authorVille Syrjälä <ville.syrjala@linux.intel.com>
Wed, 6 May 2015 11:28:57 +0000 (14:28 +0300)
committerDaniel Vetter <daniel.vetter@ffwll.ch>
Fri, 8 May 2015 11:03:43 +0000 (13:03 +0200)
commit22e02c0b4bc87c94895b1f4cb25ee705d5687cb1
treed48165d237c6afd2e74b6e5c0b585382cfbb9a9ftree | snapshot (tar.gz zip)
parent813b5e6971cbf1ae7dd0298fe44e39f7f2629f8dcommit | diff
drm/i915: Add missing POSTING_READ()s to BXT dbuf enable sequence

Do a POSTING_READ() between the DBUF_CTL register write and the
udelay() to make sure we really wait after the register write has
happened.

Spotted while reviewing Damien's SKL cdclk patch which had the
POSTING_READ()s.

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>
drivers/gpu/drm/i915/intel_display.c diff | blob | blame | history