From: Pavel Machek <pavel@ucw.cz>
To: Sakari Ailus <sakari.ailus@iki.fi>
Cc: "Rob Herring" <robh@kernel.org>,
"devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
"Ivaylo Dimitrov" <ivo.g.dimitrov.75@gmail.com>,
"Sebastian Reichel" <sre@kernel.org>,
"Pali Rohár" <pali.rohar@gmail.com>,
"linux-media@vger.kernel.org" <linux-media@vger.kernel.org>,
"Kumar Gala" <galak@codeaurora.org>,
"Mauro Carvalho Chehab" <mchehab@osg.samsung.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"Steve Longerbeam" <slongerbeam@gmail.com>,
p.zabel@pengutronix.de
Subject: Re: [PATCH] devicetree: Add video bus switch
Date: Thu, 2 Mar 2017 09:54:56 +0100 [thread overview]
Message-ID: <20170302085456.GA27818@amd> (raw)
In-Reply-To: <20170213102034.GI16975@valkosipuli.retiisi.org.uk>
[-- Attachment #1: Type: text/plain, Size: 1542 bytes --]
On Mon 2017-02-13 12:20:35, Sakari Ailus wrote:
> Hi Pavel,
>
> On Mon, Feb 13, 2017 at 10:54:20AM +0100, Pavel Machek wrote:
> > Hi!
> >
> > > > 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.
> > >
> > > The functionality is still the same, isn't it? Does it change what it is if
> > > the frequency might be 100 Hz or 0,01 Hz?
> >
> > Well. In your living your you can have a switch, which is switch at
> > much less than 0.01Hz. You can also have a dimmer, which is a PWM,
> > which is switch at 100Hz or so. So yes, I'd say switch and mux are
> > different things.
>
> Light switches are mostly on/off switches. It'd be interesting to have a
> light switch that you could use to light either of the light bulbs in a room
> but not to switch both of them on at the same time. Or off... :-)
>
> I wonder if everyone would be happy with a statement saying that it's a
> on / on switch which is used to implement a multiplexer?
I believe the difference is the timescale. If it switches "slow" it is
a switch. If it switches fast, it is a dimmer, mux, or something....
Anyway, someone else was faster, so they get to name their creation...
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
[-- Attachment #2: Digital signature --]
[-- Type: application/pgp-signature, Size: 181 bytes --]
next prev parent reply other threads:[~2017-03-02 8:54 UTC|newest]
Thread overview: 111+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-10-23 20:03 [PATCH v4] media: Driver for Toshiba et8ek8 5MP sensor Pavel Machek
2016-10-23 20:19 ` Sakari Ailus
2016-10-23 20:33 ` Pavel Machek
2016-10-31 22:54 ` Sakari Ailus
2016-11-01 6:36 ` Ivaylo Dimitrov
2016-11-01 20:11 ` Sakari Ailus
2016-11-01 22:14 ` Ivaylo Dimitrov
2016-11-02 8:15 ` Pavel Machek
2016-11-02 8:16 ` Ivaylo Dimitrov
2016-11-01 15:39 ` Pavel Machek
2016-11-01 20:08 ` Sakari Ailus
2016-11-03 8:14 ` Pavel Machek
2016-11-03 22:48 ` Sebastian Reichel
2016-11-03 23:05 ` Sakari Ailus
2016-11-03 23:40 ` Ivaylo Dimitrov
2016-11-04 0:05 ` Sebastian Reichel
2016-11-14 21:58 ` Sakari Ailus
2016-11-15 0:53 ` Sebastian Reichel
2016-11-15 10:54 ` Pavel Machek
2016-11-15 22:55 ` Sakari Ailus
2016-10-23 20:40 ` Pavel Machek
2016-10-31 22:58 ` Sakari Ailus
2016-11-02 0:45 ` Laurent Pinchart
2016-10-23 20:47 ` Pavel Machek
2016-12-13 21:05 ` Pavel Machek
2016-12-18 21:56 ` Sakari Ailus
2016-11-19 23:29 ` Sakari Ailus
2016-11-20 10:02 ` Pavel Machek
2016-11-20 15:20 ` Pavel Machek
2016-11-20 15:21 ` Pavel Machek
2016-11-20 15:31 ` Pavel Machek
2016-12-14 12:24 ` [PATCH v5] " Pavel Machek
2016-12-14 13:03 ` Pali Rohár
2016-12-14 15:52 ` Ivaylo Dimitrov
2016-12-14 20:12 ` Pavel Machek
2016-12-14 22:07 ` Pali Rohár
2016-12-14 22:35 ` Pavel Machek
2016-12-18 22:01 ` Sakari Ailus
2016-12-20 12:37 ` Pavel Machek
2016-12-20 14:01 ` Sakari Ailus
2016-12-20 22:42 ` Pavel Machek
2016-12-21 13:42 ` Sakari Ailus
2016-12-21 22:42 ` Pavel Machek
2016-12-21 23:29 ` Sakari Ailus
2016-12-22 9:34 ` Pavel Machek
2016-12-22 10:01 ` [PATCH v6] " Pavel Machek
2016-12-22 13:39 ` [RFC/PATCH] media: Add video bus switch Pavel Machek
2016-12-22 14:32 ` Sebastian Reichel
2016-12-22 20:53 ` Pavel Machek
2016-12-22 23:11 ` Sebastian Reichel
2016-12-22 22:42 ` Pavel Machek
2016-12-22 23:40 ` Sebastian Reichel
2016-12-23 11:42 ` Pavel Machek
2016-12-23 18:53 ` Ivaylo Dimitrov
2016-12-23 20:56 ` Pavel Machek
2016-12-24 14:26 ` Pavel Machek
2016-12-24 14:43 ` Pavel Machek
2016-12-24 15:20 ` [PATCH] " Pavel Machek
2016-12-24 18:35 ` kbuild test robot
2017-01-12 11:17 ` Pavel Machek
2017-02-03 22:25 ` Sakari Ailus
2017-02-05 22:16 ` Pavel Machek
2017-02-05 22:44 ` Sakari Ailus
2017-02-03 12:35 ` [PATCH] devicetree: " Pavel Machek
2017-02-03 12:35 ` 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
2017-02-04 22:33 ` Sakari Ailus
2017-02-05 21:12 ` Pavel Machek
2017-02-05 23:40 ` Sebastian Reichel
2017-02-05 23:40 ` Sebastian Reichel
2017-02-06 9:37 ` [PATCH] media: add operation to get configuration of "the other side" of the link Pavel Machek
2017-12-19 15:43 ` Sakari Ailus
2017-12-20 17:54 ` [PATCH] devicetree: Add video bus switch Laurent Pinchart
2017-12-20 17:54 ` Laurent Pinchart
2017-12-21 9:05 ` Sakari Ailus
2017-12-21 9:05 ` Sakari Ailus
2017-12-21 16:36 ` Ivaylo Dimitrov
2017-12-21 16:36 ` Ivaylo Dimitrov
2017-12-22 9:24 ` Pavel Machek
2017-12-22 9:24 ` Pavel Machek
2017-02-03 13:32 ` Pali Rohár
2017-02-03 21:07 ` Pavel Machek
2017-02-03 21:07 ` Pavel Machek
2017-02-04 1:04 ` Sebastian Reichel
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
2017-02-10 19:54 ` Pavel Machek
2017-02-10 22:17 ` Sakari Ailus
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 9:54 ` Pavel Machek
2017-02-13 10:20 ` Sakari Ailus
2017-02-13 10:20 ` Sakari Ailus
2017-03-02 8:54 ` Pavel Machek [this message]
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
2017-02-10 21:17 ` Pavel Machek
2016-12-27 9:26 ` [PATCH v6] media: Driver for Toshiba et8ek8 5MP sensor Sakari Ailus
2016-12-27 20:45 ` Pavel Machek
2016-12-27 20:59 ` [PATCH] mark myself as mainainer for camera on N900 Pavel Machek
2016-12-27 23:57 ` Sebastian Reichel
2017-01-25 13:48 ` Sakari Ailus
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20170302085456.GA27818@amd \
--to=pavel@ucw.cz \
--cc=devicetree@vger.kernel.org \
--cc=galak@codeaurora.org \
--cc=ivo.g.dimitrov.75@gmail.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-media@vger.kernel.org \
--cc=mchehab@osg.samsung.com \
--cc=p.zabel@pengutronix.de \
--cc=pali.rohar@gmail.com \
--cc=robh@kernel.org \
--cc=sakari.ailus@iki.fi \
--cc=slongerbeam@gmail.com \
--cc=sre@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.