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 9:02 UTC|newest]
Thread overview: 97+ 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 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
2017-02-06 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
2017-12-21 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
2017-02-10 19:54 ` Pavel Machek
2017-02-10 22:17 ` Sakari Ailus
2017-02-13 9:54 ` Pavel Machek
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
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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).