1I/O channel multiplexer bindings 2 3If a multiplexer is used to select which hardware signal is fed to 4e.g. an ADC channel, these bindings describe that situation. 5 6Required properties: 7- compatible : "io-channel-mux" 8- io-channels : Channel node of the parent channel that has multiplexed 9 input. 10- io-channel-names : Should be "parent". 11- #address-cells = <1>; 12- #size-cells = <0>; 13- mux-controls : Mux controller node to use for operating the mux 14- channels : List of strings, labeling the mux controller states. 15 16For each non-empty string in the channels property, an io-channel will 17be created. The number of this io-channel is the same as the index into 18the list of strings in the channels property, and also matches the mux 19controller state. The mux controller state is described in 20../mux/mux-controller.txt 21 22Example: 23 mux: mux-controller { 24 compatible = "gpio-mux"; 25 #mux-control-cells = <0>; 26 27 mux-gpios = <&pioA 0 GPIO_ACTIVE_HIGH>, 28 <&pioA 1 GPIO_ACTIVE_HIGH>; 29 }; 30 31 adc-mux { 32 compatible = "io-channel-mux"; 33 io-channels = <&adc 0>; 34 io-channel-names = "parent"; 35 36 mux-controls = <&mux>; 37 38 channels = "sync", "in", "system-regulator"; 39 }; 40