From: Pavel Machek <pavel-+ZI9xUNit7I@public.gmane.org>
To: Rob Herring <robh-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
Cc: "Sakari Ailus" <sakari.ailus-X3B1VOXEql0@public.gmane.org>,
"devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
"Ivaylo Dimitrov"
<ivo.g.dimitrov.75-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
"Sebastian Reichel" <sre-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
"Pali Rohár" <pali.rohar-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
"linux-media-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<linux-media-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
"Kumar Gala" <galak-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>,
"Mauro Carvalho Chehab"
<mchehab-JPH+aEBZ4P+UEJcrhfAQsw@public.gmane.org>,
"linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>
Subject: Re: [PATCH] devicetree: Add video bus switch
Date: Fri, 10 Feb 2017 20:54:35 +0100 [thread overview]
Message-ID: <20170210195435.GA1615@amd> (raw)
In-Reply-To: <CAL_JsqLfbAxBbXOyK0QOCc=wPe6=a+qyrAwtdbt3DtspK6oiaw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
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> >>> > diff --git a/Documentation/devicetree/bindings/media/video-bus-switch.txt b/Documentation/devicetree/bindings/media/video-bus-switch.txt
> >>> > new file mode 100644
> >>> > index 0000000..1b9f8e0
> >>> > --- /dev/null
> >>> > +++ b/Documentation/devicetree/bindings/media/video-bus-switch.txt
> >>> > @@ -0,0 +1,63 @@
> >>> > +Video Bus Switch Binding
> >>> > +========================
> >>>
> >>> I'd call it a mux rather than switch.
> >>
> >> It is a switch, not a multiplexor (
> >> https://en.wikipedia.org/wiki/Multiplexing ). Only one camera can
> >> operate at a time.
> >
> > It's no different than an i2c mux. It's one at a time.
Take a look at the wikipedia. If you do "one at a time" at 100Hz, you
can claim it is time-domain multiplex. But we are plain switching the
cameras. It takes second (or so) to setup the pipeline.
This is not multiplex.
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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next prev parent reply other threads:[~2017-02-10 19:54 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20161023200355.GA5391@amd>
[not found] ` <20161119232943.GF13965@valkosipuli.retiisi.org.uk>
[not found] ` <20161214122451.GB27011@amd>
[not found] ` <20161222100104.GA30917@amd>
[not found] ` <20161222133938.GA30259@amd>
[not found] ` <20161224152031.GA8420@amd>
2017-02-03 12:35 ` [PATCH] devicetree: Add video bus switch Pavel Machek
2017-02-03 13:07 ` Sakari Ailus
2017-02-03 21:06 ` Pavel Machek
2017-02-03 21:34 ` Sakari Ailus
2017-02-04 21:56 ` Pavel Machek
2017-02-04 22:33 ` Sakari Ailus
2017-02-05 21:12 ` Pavel Machek
2017-02-05 23:40 ` Sebastian Reichel
2017-12-20 17:54 ` Laurent Pinchart
2017-12-21 9:05 ` Sakari Ailus
2017-12-21 16:36 ` Ivaylo Dimitrov
2017-12-22 9:24 ` Pavel Machek
2017-02-03 13:32 ` Pali Rohár
2017-02-03 21:07 ` Pavel Machek
2017-02-04 1:04 ` Sebastian Reichel
2017-02-08 21:36 ` Rob Herring
2017-02-08 22:30 ` Pavel Machek
2017-02-09 23:02 ` Rob Herring
2017-02-09 23:03 ` Rob Herring
[not found] ` <CAL_JsqLfbAxBbXOyK0QOCc=wPe6=a+qyrAwtdbt3DtspK6oiaw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2017-02-10 19:54 ` Pavel Machek [this message]
2017-02-10 22:17 ` Sakari Ailus
[not found] ` <20170210221742.GI13854-S+BSfZ9RZZmRSg0ZkenSGLdO1Tsj/99ntUK59QYPAWc@public.gmane.org>
2017-02-13 9:54 ` Pavel Machek
2017-02-13 10:20 ` Sakari Ailus
2017-03-02 8:54 ` Pavel Machek
2017-02-08 22:34 ` Pavel Machek
2017-02-09 22:58 ` Rob Herring
[not found] ` <CAL_JsqK2RHLoLc_ikHzP2B5_Lof2g9NG+zvamGe4o1ko1ggGQA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2017-02-10 21:17 ` Pavel Machek
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