From: Tomi Valkeinen <tomi.valkeinen@ti.com>
To: Thierry Reding <thierry.reding@gmail.com>,
Andrzej Hajda <a.hajda@samsung.com>
Cc: "devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
"linux-samsung-soc@vger.kernel.org"
<linux-samsung-soc@vger.kernel.org>,
Sean Paul <seanpaul@google.com>,
Daniel Vetter <daniel.vetter@ffwll.ch>,
sunil joshi <joshi@samsung.com>,
"dri-devel@lists.freedesktop.org"
<dri-devel@lists.freedesktop.org>,
Laurent Pinchart <laurent.pinchart@ideasonboard.com>,
Ajay kumar <ajaynumb@gmail.com>,
Prashanth G <prashanth.g@samsung.com>,
Ajay Kumar <ajaykumar.rs@samsung.com>
Subject: Re: [PATCH V7 11/12] Documentation: bridge: Add documentation for ps8622 DT properties
Date: Tue, 23 Sep 2014 12:40:24 +0300 [thread overview]
Message-ID: <54214008.4040105@ti.com> (raw)
In-Reply-To: <20140923083514.GM30514@ulmo>
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On 23/09/14 11:35, Thierry Reding wrote:
> Well, a display controller is never going to attach to a panel directly.
With parallel RGB, that (almost) happens. There's voltage level shifting
probably in the middle, but I don't see anything else there.
> But I agree that it would be nice to unify bridges and encoders more. It
> should be possible to make encoder always a bridge (or perhaps even
> replace encoders with bridges altogether). Then once you're out of the
> DRM device everything would be a bridge until you get to a panel.
What exactly is a bridge and what is an encoder? Those are DRM
constructs, aren't they?
As I see it, a video pipeline consist of a video source (display
controller usually), a chain of encoders (all of which may not be
strictly "encoders", they could be level shifters, muxes, ESD protection
devices or such), and either a display device like a panel or a
connector to outside world.
Am I right that in DRM world the encoder is the first device in the
display chain after the display controller, and the next is a bridge?
That sounds totally artificial, and I hope we don't reflect that in the
DT side in any way.
Tomi
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next prev parent reply other threads:[~2014-09-23 9:40 UTC|newest]
Thread overview: 93+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-08-27 14:39 [PATCH V7 11/12] Documentation: bridge: Add documentation for ps8622 DT properties Ajay Kumar
2014-08-27 14:39 ` [PATCH V7 10/12] Documentation: devicetree: Add vendor prefix for parade Ajay Kumar
2014-08-27 14:39 ` [PATCH V7 09/12] Documentation: drm: bridge: move to video/bridge Ajay Kumar
2014-09-17 11:52 ` [PATCH V7 11/12] Documentation: bridge: Add documentation for ps8622 DT properties Tomi Valkeinen
2014-09-17 14:29 ` Ajay kumar
2014-09-17 16:22 ` Tomi Valkeinen
2014-09-18 5:50 ` Ajay kumar
2014-09-19 12:54 ` Tomi Valkeinen
2014-09-19 13:59 ` Ajay kumar
2014-09-19 14:28 ` Tomi Valkeinen
2014-09-20 11:22 ` Ajay kumar
2014-09-20 15:27 ` Javier Martinez Canillas
2014-09-22 6:00 ` Ajay kumar
2014-09-22 15:05 ` Tomi Valkeinen
2014-10-07 10:30 ` Tomi Valkeinen
2014-10-07 10:36 ` Ajay kumar
2014-10-07 14:49 ` Laurent Pinchart
2014-10-08 7:09 ` Thierry Reding
2014-10-10 13:03 ` Ajay kumar
2014-10-16 8:23 ` Ajay kumar
2014-10-16 9:04 ` Laurent Pinchart
2014-10-28 9:12 ` Javier Martinez Canillas
2014-10-28 11:12 ` Ajay kumar
2014-09-22 8:26 ` Thierry Reding
2014-09-22 14:42 ` Tomi Valkeinen
2014-09-23 5:53 ` Thierry Reding
2014-09-23 8:41 ` Tomi Valkeinen
2014-09-23 9:28 ` Thierry Reding
2014-09-23 11:15 ` Tomi Valkeinen
2014-09-23 14:29 ` Thierry Reding
2014-09-23 15:25 ` Tomi Valkeinen
2014-09-22 8:10 ` Thierry Reding
2014-09-22 8:31 ` Ajay kumar
2014-09-22 10:41 ` Thierry Reding
2014-09-22 11:23 ` Ajay kumar
2014-09-22 11:35 ` Thierry Reding
2014-09-22 12:12 ` Ajay kumar
2014-09-23 0:00 ` Laurent Pinchart
2014-09-23 5:55 ` Thierry Reding
2014-09-23 6:11 ` Ajay kumar
2014-09-23 6:28 ` Thierry Reding
2014-09-23 11:47 ` DT property to selectively disable device features (was [PATCH V7 11/12] Documentation: bridge: Add documentation for ps8622 DT properties) Laurent Pinchart
2014-09-22 8:06 ` [PATCH V7 11/12] Documentation: bridge: Add documentation for ps8622 DT properties Thierry Reding
2014-09-22 14:23 ` Tomi Valkeinen
2014-09-23 6:04 ` Thierry Reding
2014-09-23 7:24 ` Andrzej Hajda
2014-09-23 8:35 ` Thierry Reding
2014-09-23 9:40 ` Tomi Valkeinen [this message]
2014-09-23 10:01 ` Thierry Reding
2014-09-23 12:09 ` Tomi Valkeinen
2014-09-23 14:38 ` Thierry Reding
2014-09-23 15:33 ` Tomi Valkeinen
2014-09-23 9:43 ` Andrzej Hajda
2014-09-23 10:10 ` Thierry Reding
2014-09-23 10:34 ` Andrzej Hajda
2014-09-23 14:41 ` Thierry Reding
2014-09-24 7:11 ` Andrzej Hajda
2014-09-24 8:27 ` Tomi Valkeinen
2014-09-23 11:33 ` Laurent Pinchart
2014-09-23 8:54 ` Tomi Valkeinen
2014-09-23 9:39 ` Thierry Reding
2014-09-23 11:31 ` Tomi Valkeinen
2014-09-23 14:45 ` Thierry Reding
2014-09-24 8:42 ` Tomi Valkeinen
2014-10-06 14:40 ` Laurent Pinchart
2014-10-07 7:06 ` Tomi Valkeinen
2014-10-07 7:23 ` Laurent Pinchart
2014-10-07 8:25 ` Tomi Valkeinen
2014-10-07 16:14 ` Laurent Pinchart
2014-09-22 7:54 ` Thierry Reding
2014-09-22 14:04 ` Tomi Valkeinen
2014-09-23 6:21 ` Thierry Reding
2014-09-23 9:30 ` Tomi Valkeinen
2014-09-23 9:53 ` Thierry Reding
2014-09-23 11:12 ` Laurent Pinchart
2014-09-23 14:50 ` Thierry Reding
2014-09-23 12:00 ` Tomi Valkeinen
2014-09-23 14:58 ` Thierry Reding
2014-09-24 9:08 ` Tomi Valkeinen
2014-09-25 6:23 ` Thierry Reding
2014-10-06 11:34 ` Tomi Valkeinen
2014-10-06 13:55 ` Laurent Pinchart
2014-09-23 10:02 ` Andrzej Hajda
2014-09-23 10:02 ` Andrzej Hajda
2014-09-23 11:10 ` Laurent Pinchart
2014-09-23 11:18 ` Andrzej Hajda
2014-09-23 11:23 ` Laurent Pinchart
2014-09-23 11:47 ` Andrzej Hajda
2014-09-23 11:52 ` Laurent Pinchart
2014-09-23 12:40 ` Andrzej Hajda
2014-09-23 12:40 ` Andrzej Hajda
2014-09-23 14:49 ` Thierry Reding
2014-10-06 14:38 ` Laurent Pinchart
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