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dt-bindings: pinctrl: rt2880: add binding document
The commit adds rt2880 compatible node in binding document. Signed-off-by: Sergio Paracuellos <sergio.paracuellos@gmail.com> Link: https://lore.kernel.org/r/20201208075523.7060-2-sergio.paracuellos@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/pinctrl/ralink,rt2880-pinmux.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Ralink rt2880 pinmux controller
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maintainers:
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- Sergio Paracuellos <sergio.paracuellos@gmail.com>
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description:
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The rt2880 pinmux can only set the muxing of pin groups. muxing indiviual pins
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is not supported. There is no pinconf support.
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properties:
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compatible:
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enum:
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- ralink,rt2880-pinmux
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pinctrl-0:
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description:
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A phandle to the node containing the subnodes containing default
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configurations. This is for pinctrl hogs.
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pinctrl-names:
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description:
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A pinctrl state named "default" can be defined.
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const: default
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required:
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- compatible
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patternProperties:
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'[a-z0-9_-]+':
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if:
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type: object
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description: node for pinctrl.
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$ref: "pinmux-node.yaml"
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then:
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properties:
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groups:
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description: Name of the pin group to use for the functions.
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enum: [i2c, spi, uart1, uart2, uart3, rgmii1, rgmii2, mdio,
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pcie, sdhci]
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function:
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description: The mux function to select
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enum: [gpio, i2c, spi, uart1, uart2, uart3, rgmii1, rgmii2,
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mdio, nand1, nand2, sdhci]
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additionalProperties: false
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examples:
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# Pinmux controller node
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- |
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pinctrl {
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compatible = "ralink,rt2880-pinmux";
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pinctrl-names = "default";
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pinctrl-0 = <&state_default>;
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state_default: pinctrl0 {
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};
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i2c_pins: i2c0 {
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i2c0 {
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groups = "i2c";
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function = "i2c";
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};
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};
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};
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