diff options
| author | Peter Rosin <peda@axentia.se> | 2017-05-14 22:51:05 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-06-03 13:25:40 +0300 |
| commit | 256ac0375098e50d59c415fcbb561f2927fa8780 (patch) | |
| tree | 914131a19de728bb8e14ef039a8589b6c67480da /include | |
| parent | b594b10144f631130110b424d9d5e4f152f14e0c (diff) | |
| download | linux-256ac0375098e50d59c415fcbb561f2927fa8780.tar.xz | |
dt-bindings: document devicetree bindings for mux-controllers and gpio-mux
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>
Diffstat (limited to 'include')
| -rw-r--r-- | include/dt-bindings/mux/mux.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/include/dt-bindings/mux/mux.h b/include/dt-bindings/mux/mux.h new file mode 100644 index 000000000000..c8e855c4a609 --- /dev/null +++ b/include/dt-bindings/mux/mux.h @@ -0,0 +1,16 @@ +/* + * 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 |