[PATCH v6 4/9] dt-bindings: iio: iio-mux: document iio-mux bindings
From: Peter Rosin <hidden>
Date: 2016-11-30 09:53:17
Also in:
linux-i2c, linux-iio, lkml
Subsystem:
iio subsystem and drivers, open firmware and flattened device tree bindings, the rest · Maintainers:
Jonathan Cameron, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
Signed-off-by: Peter Rosin <redacted> --- .../bindings/iio/multiplexer/iio-mux.txt | 40 ++++++++++++++++++++++ MAINTAINERS | 6 ++++ 2 files changed, 46 insertions(+) create mode 100644 Documentation/devicetree/bindings/iio/multiplexer/iio-mux.txt
diff --git a/Documentation/devicetree/bindings/iio/multiplexer/iio-mux.txt b/Documentation/devicetree/bindings/iio/multiplexer/iio-mux.txt
new file mode 100644
index 000000000000..8080cf790d82
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/multiplexer/iio-mux.txt@@ -0,0 +1,40 @@ +IIO multiplexer bindings + +If a multiplexer is used to select which hardware signal is fed to +e.g. an ADC channel, these bindings describe that situation. + +Required properties: +- compatible : "iio-mux" +- io-channels : Channel node of the parent channel that has multiplexed + input. +- io-channel-names : Should be "parent". +- #address-cells = <1>; +- #size-cells = <0>; +- mux-controls : Mux controller node to use for operating the mux +- channels : List of strings, labeling the mux controller states. + +The multiplexer state as described in ../misc/mux-controller.txt + +For each non-empty string in the channels property, an iio channel will +be created. The number of this iio channel is the same as the index into +the list of strings in the channels property, and also matches the mux +controller state. + +Example: + mux: mux-controller { + compatible = "mux-gpio"; + #mux-control-cells = <0>; + + mux-gpios = <&pioA 0 GPIO_ACTIVE_HIGH>, + <&pioA 1 GPIO_ACTIVE_HIGH>; + }; + + adc-mux { + compatible = "iio-mux"; + io-channels = <&adc 0>; + io-channel-names = "parent"; + + mux-controls = <&mux>; + + channels = "sync", "in", system-regulator"; + };
diff --git a/MAINTAINERS b/MAINTAINERS
index dc7498682752..77045ae15865 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS@@ -6234,6 +6234,12 @@ F: Documentation/ABI/testing/sysfs-bus-iio-adc-envelope-detector F: Documentation/devicetree/bindings/iio/adc/envelope-detector.txt F: drivers/iio/adc/envelope-detector.c +IIO MULTIPLEXER +M: Peter Rosin <peda@axentia.se> +L: linux-iio@vger.kernel.org +S: Maintained +F: Documentation/devicetree/bindings/iio/multiplexer/iio-mux.txt + IIO SUBSYSTEM AND DRIVERS M: Jonathan Cameron <jic23@kernel.org> R: Hartmut Knaack <knaack.h@gmx.de>
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2.1.4