Documentation/devicetree/bindings/pinctrl/ralink,rt305x-pinctrl.yaml

# 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, and RT3350 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
    additionalProperties: false

    patternProperties:
      '^(.*-)?pinmux$':
        type: object
        description: node for pinctrl.
        $ref: pinmux-node.yaml#
        additionalProperties: false

        properties:
          function:
            description:
              A string containing the name of the function to mux to the group.
            enum: [gpio, gpio i2s, gpio uartf, i2c, i2s uartf, jtag, mdio,
                   pcm gpio, pcm i2s, pcm uartf, rgmii, sdram, spi, uartf,
                   uartlite]

          groups:
            description:
              An array of strings. Each string contains the name of a group.
            maxItems: 1

        required:
          - groups
          - function

        allOf:
          - if:
              properties:
                function:
                  const: gpio
            then:
              properties:
                groups:
                  enum: [i2c, jtag, mdio, rgmii, sdram, spi, uartf, uartlite]

          - if:
              properties:
                function:
                  const: gpio i2s
            then:
              properties:
                groups:
                  enum: [uartf]

          - if:
              properties:
                function:
                  const: gpio uartf
            then:
              properties:
                groups:
                  enum: [uartf]

          - if:
              properties:
                function:
                  const: i2c
            then:
              properties:
                groups:
                  enum: [i2c]

          - if:
              properties:
                function:
                  const: i2s uartf
            then:
              properties:
                groups:
                  enum: [uartf]

          - if:
              properties:
                function:
                  const: jtag
            then:
              properties:
                groups:
                  enum: [jtag]

          - if:
              properties:
                function:
                  const: mdio
            then:
              properties:
                groups:
                  enum: [mdio]

          - if:
              properties:
                function:
                  const: pcm gpio
            then:
              properties:
                groups:
                  enum: [uartf]

          - if:
              properties:
                function:
                  const: pcm i2s
            then:
              properties:
                groups:
                  enum: [uartf]

          - if:
              properties:
                function:
                  const: pcm uartf
            then:
              properties:
                groups:
                  enum: [uartf]

          - if:
              properties:
                function:
                  const: rgmii
            then:
              properties:
                groups:
                  enum: [rgmii]

          - if:
              properties:
                function:
                  const: sdram
            then:
              properties:
                groups:
                  enum: [sdram]

          - if:
              properties:
                function:
                  const: spi
            then:
              properties:
                groups:
                  enum: [spi]

          - if:
              properties:
                function:
                  const: uartf
            then:
              properties:
                groups:
                  enum: [uartf]

          - if:
              properties:
                function:
                  const: uartlite
            then:
              properties:
                groups:
                  enum: [uartlite]

allOf:
  - $ref: pinctrl.yaml#

required:
  - compatible

additionalProperties: false

examples:
  - |
    pinctrl {
      compatible = "ralink,rt305x-pinctrl";

      i2c_pins: i2c0-pins {
        pinmux {
          groups = "i2c";
          function = "i2c";
        };
      };
    };