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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/pinctrl/pinctrl-multiplexer.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Generic pinctrl device for on-board MUX Chips
maintainers:
- Frank Li <Frank.Li@nxp.com>
description:
Generic pinctrl device for on-board MUX Chips, which switch SoC signals
between different peripherals (e.g. MMC and UART).
The MUX select lines are often driven by a I2C GPIO expander.
properties:
compatible:
const: pinctrl-multiplexer
patternProperties:
'-grp$':
type: object
additionalProperties: false
properties:
mux-states:
maxItems: 1
required:
- mux-states
required:
- compatible
allOf:
- $ref: pinctrl.yaml#
unevaluatedProperties: false
examples:
- |
pinctrl-mux {
compatible = "pinctrl-multiplexer";
uart-grp {
mux-states = <&mux 0>;
};
spi-grp {
mux-states = <&mux 1>;
};
i2c-grp {
mux-states = <&mux 2>;
};
};
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