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[PATCH v15 10/13] dt-bindings: mux-adg792a: document devicetree bindings for ADG792A/G mux

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From: Peter Rosin <peda@axentia.se>

Analog Devices ADG792A/G is a triple 4:1 mux.

Acked-by: Jonathan Cameron <jic23@kernel.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Peter Rosin <peda@axentia.se>
---
 .../devicetree/bindings/mux/adi,adg792a.txt        | 75 ++++++++++++++++++++++
 1 file changed, 75 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/mux/adi,adg792a.txt

diff --git a/Documentation/devicetree/bindings/mux/adi,adg792a.txt b/Documentation/devicetree/bindings/mux/adi,adg792a.txt
new file mode 100644
index 000000000000..96b787a69f50
--- /dev/null
+++ b/Documentation/devicetree/bindings/mux/adi,adg792a.txt
@@ -0,0 +1,75 @@
+Bindings for Analog Devices ADG792A/G Triple 4:1 Multiplexers
+
+Required properties:
+- compatible : "adi,adg792a" or "adi,adg792g"
+- #mux-control-cells : <0> if parallel (the three muxes are bound together
+  with a single mux controller controlling all three muxes), or <1> if
+  not (one mux controller for each mux).
+* Standard mux-controller bindings as described in mux-controller.txt
+
+Optional properties for ADG792G:
+- gpio-controller : if present, #gpio-cells below is required.
+- #gpio-cells : should be <2>
+			  - First cell is the GPO line number, i.e. 0 or 1
+			  - Second cell is used to specify active high (0)
+			    or active low (1)
+
+Optional properties:
+- idle-state : if present, array of states that the mux controllers will have
+  when idle. The special state MUX_IDLE_AS_IS is the default and
+  MUX_IDLE_DISCONNECT is also supported.
+
+States 0 through 3 correspond to signals A through D in the datasheet.
+
+Example:
+
+	/*
+	 * Three independent mux controllers (of which one is used).
+	 * Mux 0 is disconnected when idle, mux 1 idles in the previously
+	 * selected state and mux 2 idles with signal B.
+	 */
+	&i2c0 {
+		mux: mux-controller@50 {
+			compatible = "adi,adg792a";
+			reg = <0x50>;
+			#mux-control-cells = <1>;
+
+			idle-state = <MUX_IDLE_DISCONNECT MUX_IDLE_AS_IS 1>;
+		};
+	};
+
+	adc-mux {
+		compatible = "io-channel-mux";
+		io-channels = <&adc 0>;
+		io-channel-names = "parent";
+
+		mux-controls = <&mux 2>;
+
+		channels = "sync-1", "", "out";
+	};
+
+
+	/*
+	 * Three parallel muxes with one mux controller, useful e.g. if
+	 * the adc is differential, thus needing two signals to be muxed
+	 * simultaneously for correct operation.
+	 */
+	&i2c0 {
+		pmux: mux-controller@50 {
+			compatible = "adi,adg792a";
+			reg = <0x50>;
+			#mux-control-cells = <0>;
+
+			idle-state = <1>;
+		};
+	};
+
+	diff-adc-mux {
+		compatible = "io-channel-mux";
+		io-channels = <&adc 0>;
+		io-channel-names = "parent";
+
+		mux-controls = <&pmux>;
+
+		channels = "sync-1", "", "out";
+	};
-- 
2.1.4

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[PATCH v15 00/13] mux controller abstraction and iio/i2c muxes Peter Rosin <peda@lysator.liu.se> - 2017-05-14 22:00 +0200
  [PATCH v15 01/13] devres: trivial whitespace fix Peter Rosin <peda@lysator.liu.se> - 2017-05-14 22:00 +0200
  [PATCH v15 02/13] dt-bindings: document devicetree bindings for mux-controllers and gpio-mux Peter Rosin <peda@lysator.liu.se> - 2017-05-14 22:00 +0200
  [PATCH v15 10/13] dt-bindings: mux-adg792a: document devicetree bindings for ADG792A/G mux Peter Rosin <peda@lysator.liu.se> - 2017-05-14 22:00 +0200
  [PATCH v15 13/13] mux: mmio-based syscon mux controller Peter Rosin <peda@lysator.liu.se> - 2017-05-14 22:00 +0200
  [PATCH v15 09/13] i2c: i2c-mux-gpmux: new driver Peter Rosin <peda@lysator.liu.se> - 2017-05-14 22:00 +0200
  [PATCH v15 07/13] iio: multiplexer: new iio category and iio-mux driver Peter Rosin <peda@lysator.liu.se> - 2017-05-14 22:00 +0200
  [PATCH v15 04/13] mux: gpio: add mux controller driver for gpio based multiplexers Peter Rosin <peda@lysator.liu.se> - 2017-05-14 22:10 +0200
    Re: [PATCH v15 04/13] mux: gpio: add mux controller driver for gpio  based multiplexers Philipp Zabel <p.zabel@pengutronix.de> - 2017-05-17 11:40 +0200
  [PATCH v15 06/13] dt-bindings: iio: io-channel-mux: document io-channel-mux bindings Peter Rosin <peda@lysator.liu.se> - 2017-05-14 22:10 +0200
  [PATCH v15 11/13] mux: adg792a: add mux controller driver for ADG792A/G Peter Rosin <peda@lysator.liu.se> - 2017-05-14 22:10 +0200
  [PATCH v15 03/13] mux: minimal mux subsystem Peter Rosin <peda@lysator.liu.se> - 2017-05-14 22:10 +0200
    Re: [PATCH v15 03/13] mux: minimal mux subsystem Philipp Zabel <p.zabel@pengutronix.de> - 2017-05-17 11:40 +0200

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