Thread (27 messages) 27 messages, 7 authors, 2017-12-22

Re: [PATCH] devicetree: Add video bus switch

From: Pavel Machek <hidden>
Date: 2017-02-10 19:54:41
Also in: linux-media, lkml

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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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