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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
commit | 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 (patch) | |
tree | a94efe259b9009378be6d90eb30d2b019d95c194 /Documentation/devicetree/bindings/iio/multiplexer/io-channel-mux.txt | |
parent | Initial commit. (diff) | |
download | linux-upstream/5.10.209.tar.xz linux-upstream/5.10.209.zip |
Adding upstream version 5.10.209.upstream/5.10.209upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | Documentation/devicetree/bindings/iio/multiplexer/io-channel-mux.txt | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/iio/multiplexer/io-channel-mux.txt b/Documentation/devicetree/bindings/iio/multiplexer/io-channel-mux.txt new file mode 100644 index 000000000..89647d714 --- /dev/null +++ b/Documentation/devicetree/bindings/iio/multiplexer/io-channel-mux.txt @@ -0,0 +1,39 @@ +I/O channel 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 : "io-channel-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. + +For each non-empty string in the channels property, an io-channel will +be created. The number of this io-channel is the same as the index into +the list of strings in the channels property, and also matches the mux +controller state. The mux controller state is described in +../mux/mux-controller.txt + +Example: + mux: mux-controller { + compatible = "gpio-mux"; + #mux-control-cells = <0>; + + mux-gpios = <&pioA 0 GPIO_ACTIVE_HIGH>, + <&pioA 1 GPIO_ACTIVE_HIGH>; + }; + + adc-mux { + compatible = "io-channel-mux"; + io-channels = <&adc 0>; + io-channel-names = "parent"; + + mux-controls = <&mux>; + + channels = "sync", "in", "system-regulator"; + }; |