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dt-bindings: document devicetree bindings for mux-controllers and gpio-mux

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Allow specifying that a single multiplexer controller can be used to
control several parallel multiplexers, thus enabling sharing of the
multiplexer controller by different consumers.

Add a binding for a first mux controller in the form of a GPIO based mux
controller.

Acked-by: Jonathan Cameron <jic23@kernel.org>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Peter Rosin <peda@axentia.se>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Peter Rosin
2017-05-14 21:51:05 +02:00
committed by Greg Kroah-Hartman
parent b594b10144
commit 256ac03750
4 changed files with 248 additions and 0 deletions
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16
include/dt-bindings/mux/mux.h Normal file
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/*
* This header provides constants for most Multiplexer bindings.
*
* Most Multiplexer bindings specify an idle state. In most cases, the
* the multiplexer can be left as is when idle, and in some cases it can
* disconnect the input/output and leave the multiplexer in a high
* impedance state.
*/
#ifndef _DT_BINDINGS_MUX_MUX_H
#define _DT_BINDINGS_MUX_MUX_H
#define MUX_IDLE_AS_IS (-1)
#define MUX_IDLE_DISCONNECT (-2)
#endif