From 94aea0c6f7bdb5d224b1f48ab0e93f40bf447a4c Mon Sep 17 00:00:00 2001 From: Mircea Caprioru Date: Wed, 1 Aug 2018 10:37:39 +0200 Subject: dt-bindings: mux: add adi,adgs1408 Adding documentation for adgs1408/1409 multiplexer. The bindings follow the standard SPI and mux bindings and do not require any additional custom properties. Signed-off-by: Mircea Caprioru Reviewed-by: Rob Herring [peda: reword idle-state to non-array for singular mux controller] Signed-off-by: Peter Rosin Signed-off-by: Greg Kroah-Hartman --- .../devicetree/bindings/mux/adi,adgs1408.txt | 48 ++++++++++++++++++++++ 1 file changed, 48 insertions(+) create mode 100644 Documentation/devicetree/bindings/mux/adi,adgs1408.txt (limited to 'Documentation/devicetree/bindings/mux') diff --git a/Documentation/devicetree/bindings/mux/adi,adgs1408.txt b/Documentation/devicetree/bindings/mux/adi,adgs1408.txt new file mode 100644 index 000000000000..be6947f4d86b --- /dev/null +++ b/Documentation/devicetree/bindings/mux/adi,adgs1408.txt @@ -0,0 +1,48 @@ +Bindings for Analog Devices ADGS1408/1409 8:1/Dual 4:1 Mux + +Required properties: +- compatible : Should be one of + * "adi,adgs1408" + * "adi,adgs1409" +* Standard mux-controller bindings as described in mux-controller.txt + +Optional properties for ADGS1408/1409: +- gpio-controller : if present, #gpio-cells is required. +- #gpio-cells : should be <2> + - First cell is the GPO line number, i.e. 0 to 3 + for ADGS1408 and 0 to 4 for ADGS1409 + - Second cell is used to specify active high (0) + or active low (1) + +Optional properties: +- idle-state : if present, the state that the mux controller will have + when idle. The special state MUX_IDLE_AS_IS is the default and + MUX_IDLE_DISCONNECT is also supported. + +States 0 through 7 correspond to signals S1 through S8 in the datasheet. +For ADGS1409 only states 0 to 3 are available. + +Example: + + /* + * One mux controller. + * Mux state set to idle as is (no idle-state declared) + */ + &spi0 { + mux: mux-controller@0 { + compatible = "adi,adgs1408"; + reg = <0>; + spi-max-frequency = <1000000>; + #mux-control-cells = <0>; + }; + } + + adc-mux { + compatible = "io-channel-mux"; + io-channels = <&adc 1>; + io-channel-names = "parent"; + mux-controls = <&mux>; + + channels = "out_a0", "out_a1", "test0", "test1", + "out_b0", "out_b1", "testb0", "testb1"; + }; -- cgit v1.2.3