[PATCH 1/2] drm/dp: Add defines for latency in sink

[Puthikorn Voravootivat]

On Mon, Sep 25, 2017 at 10:11 PM, Daniel Vetter <daniel at ffwll.ch> wrote:

> On Thu, Sep 21, 2017 at 07:42:07AM -0700, Rodrigo Vivi wrote:
> > On Wed, Sep 20, 2017 at 02:32:34PM +0000, vathsala nagaraju wrote:
> > > Add defines for dpcd register 2009 (synchronization latency
> > > in sink).
> > >
> > > Cc: Rodrigo Vivi <rodrigo.vivi at intel.com>
> > > CC: Puthikorn Voravootivat <puthik at chromium.org>
> > > Signed-off-by: Vathsala Nagaraju <vathsala.nagaraju at intel.com>
> >
> > I keep forgetting to update my eDP spec 1.4 to this 1.4b...
>
> Maybe the patch should then make this clear, by annotating it with
> /* eDP 1.4b */ That's missing, which isn't all that great really, since it
> makes specs hunts like yours necessary.
>
> It's actually in eDP 1.4 spec, table 5-6 page 86


> Please fix up before applying.
> -Daniel
> >
> >
> > Reviewed-by: Rodrigo Vivi <rodrigo.vivi at intel.com>
> >
> >
> >
> > > ---
> > >  include/drm/drm_dp_helper.h | 3 +++
> > >  1 file changed, 3 insertions(+)
> > >
> > > diff --git a/include/drm/drm_dp_helper.h b/include/drm/drm_dp_helper.h
> > > index 11c39f1..846004e6 100644
> > > --- a/include/drm/drm_dp_helper.h
> > > +++ b/include/drm/drm_dp_helper.h
> > > @@ -735,6 +735,9 @@
> > >  # define DP_PSR_SINK_INTERNAL_ERROR         7
> > >  # define DP_PSR_SINK_STATE_MASK             0x07
> > >
> > > +#define DP_SINK_SYNCHRONIZATION_LATENCY        0x2009
> > > +# define DP_MAX_RESYNC_FRAME_CNT_MASK          0xf
> > > +
> > >  #define DP_RECEIVER_ALPM_STATUS                0x200b  /* eDP 1.4 */
> > >  # define DP_ALPM_LOCK_TIMEOUT_ERROR            (1 << 0)
> > >
> > > --
> > > 1.9.1
> > >
> > _______________________________________________
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> > dri-devel at lists.freedesktop.org
> > https://lists.freedesktop.org/mailman/listinfo/dri-devel
>
> --
> Daniel Vetter
> Software Engineer, Intel Corporation
> http://blog.ffwll.ch
>
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