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dt-bindings: iio: multiplexer: Convert io-channel-mux bindings to DT schema
Straight conversion of the txt file using the mux-consumer.yaml binding now that is available. Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Cc: Peter Rosin <peda@axentia.se> [robh: Drop quotes and $ref for mux-controls] Signed-off-by: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/20210522112908.1611389-3-jic23@kernel.org
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3 changed files with 71 additions and 40 deletions
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I/O channel multiplexer bindings
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If a multiplexer is used to select which hardware signal is fed to
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e.g. an ADC channel, these bindings describe that situation.
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Required properties:
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- compatible : "io-channel-mux"
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- io-channels : Channel node of the parent channel that has multiplexed
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input.
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- io-channel-names : Should be "parent".
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- #address-cells = <1>;
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- #size-cells = <0>;
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- mux-controls : Mux controller node to use for operating the mux
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- channels : List of strings, labeling the mux controller states.
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For each non-empty string in the channels property, an io-channel will
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be created. The number of this io-channel is the same as the index into
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the list of strings in the channels property, and also matches the mux
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controller state. The mux controller state is described in
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../mux/mux-controller.yaml
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Example:
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mux: mux-controller {
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compatible = "gpio-mux";
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#mux-control-cells = <0>;
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mux-gpios = <&pioA 0 GPIO_ACTIVE_HIGH>,
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<&pioA 1 GPIO_ACTIVE_HIGH>;
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};
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adc-mux {
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compatible = "io-channel-mux";
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io-channels = <&adc 0>;
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io-channel-names = "parent";
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mux-controls = <&mux>;
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channels = "sync", "in", "system-regulator";
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};
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# SPDX-License-Identifier: GPL-2.0
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/iio/multiplexer/io-channel-mux.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: I/O channel multiplexer bindings
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maintainers:
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- Peter Rosin <peda@axentia.se>
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description: |
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If a multiplexer is used to select which hardware signal is fed to
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e.g. an ADC channel, these bindings describe that situation.
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For each non-empty string in the channels property, an io-channel will be
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created. The number of this io-channel is the same as the index into the list
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of strings in the channels property, and also matches the mux controller
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state. The mux controller state is described in
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Documentation/devicetree/bindings/mux/mux-controller.yaml
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properties:
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compatible:
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const: io-channel-mux
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io-channels:
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maxItems: 1
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description: Channel node of the parent channel that has multiplexed input.
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io-channel-names:
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const: parent
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mux-controls: true
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mux-control-names: true
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channels:
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$ref: /schemas/types.yaml#/definitions/string-array
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description:
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List of strings, labeling the mux controller states.
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required:
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- compatible
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- io-channels
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- io-channel-names
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- mux-controls
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- channels
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additionalProperties: false
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examples:
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- |
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#include <dt-bindings/gpio/gpio.h>
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mux: mux-controller {
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compatible = "gpio-mux";
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#mux-control-cells = <0>;
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mux-gpios = <&pioA 0 GPIO_ACTIVE_HIGH>,
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<&pioA 1 GPIO_ACTIVE_HIGH>;
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};
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adc-mux {
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compatible = "io-channel-mux";
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io-channels = <&adc 0>;
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io-channel-names = "parent";
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mux-controls = <&mux>;
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channels = "sync", "in", "system-regulator";
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};
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...
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@ -8858,7 +8858,7 @@ IIO MULTIPLEXER
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M: Peter Rosin <peda@axentia.se>
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L: linux-iio@vger.kernel.org
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S: Maintained
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F: Documentation/devicetree/bindings/iio/multiplexer/io-channel-mux.txt
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F: Documentation/devicetree/bindings/iio/multiplexer/io-channel-mux.yaml
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F: drivers/iio/multiplexer/iio-mux.c
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IIO SCMI BASED DRIVER
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