[Intel-gfx] [PATCH] drm/i915: Add missing POSTING_READ()s to BXT dbuf enable sequence

Daniel Vetter daniel at ffwll.ch
Wed May 6 23:41:17 PDT 2015


On Wed, May 06, 2015 at 03:05:04PM +0300, Imre Deak wrote:
> On ke, 2015-05-06 at 14:28 +0300, ville.syrjala at linux.intel.com wrote:
> > From: Ville Syrjälä <ville.syrjala at linux.intel.com>
> > 
> > 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 at intel.com>
> > Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
> 
> Yep, makes sense:
> Reviewed-by: Imre Deak <imre.deak at intel.com>

Queued for -next, thanks for the patch.
-Daniel
-- 
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch


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