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+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pinctrl/ralink,rt305x-pinctrl.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Ralink RT305X Pin Controller
+
+maintainers:
+ - Arınç ÜNAL <arinc.unal@arinc9.com>
+ - Sergio Paracuellos <sergio.paracuellos@gmail.com>
+
+description:
+ Ralink RT305X pin controller for RT3050, RT3052, RT3350, RT3352 and RT5350
+ SoCs.
+ The pin controller can only set the muxing of pin groups. Muxing individual
+ pins is not supported. There is no pinconf support.
+
+properties:
+ compatible:
+ const: ralink,rt305x-pinctrl
+
+patternProperties:
+ '-pins$':
+ type: object
+ patternProperties:
+ '^(.*-)?pinmux$':
+ type: object
+ description: node for pinctrl.
+ $ref: pinmux-node.yaml#
+
+ properties:
+ groups:
+ description: The pin group to select.
+ enum: [
+ # common
+ i2c, jtag, led, mdio, rgmii, spi, spi_cs1, uartf, uartlite,
+
+ # For RT3050, RT3052 and RT3350 SoCs
+ sdram,
+
+ # For RT3352 SoC
+ lna, pa
+ ]
+
+ function:
+ description: The mux function to select.
+ enum: [
+ # common
+ gpio, gpio i2s, gpio uartf, i2c, i2s uartf, jtag, led, mdio,
+ pcm gpio, pcm i2s, pcm uartf, rgmii, spi, spi_cs1, uartf,
+ uartlite, wdg_cs1,
+
+ # For RT3050, RT3052 and RT3350 SoCs
+ sdram,
+
+ # For RT3352 SoC
+ lna, pa
+ ]
+
+ required:
+ - groups
+ - function
+
+ additionalProperties: false
+
+ additionalProperties: false
+
+allOf:
+ - $ref: "pinctrl.yaml#"
+
+required:
+ - compatible
+
+additionalProperties: false
+
+examples:
+ # Pinmux controller node
+ - |
+ pinctrl {
+ compatible = "ralink,rt305x-pinctrl";
+
+ i2c_pins: i2c0-pins {
+ pinmux {
+ groups = "i2c";
+ function = "i2c";
+ };
+ };
+ };