xref: /linux/Documentation/devicetree/bindings/pinctrl/sophgo,sg2042-pinctrl.yaml (revision 4f9786035f9e519db41375818e1d0b5f20da2f10)

# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
%YAML 1.2
---
$id: http://devicetree.org/schemas/pinctrl/sophgo,sg2042-pinctrl.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Sophgo SG2042 Pin Controller

maintainers:
  - Inochi Amaoto <inochiama@outlook.com>

properties:
  compatible:
    enum:
      - sophgo,sg2042-pinctrl
      - sophgo,sg2044-pinctrl

  reg:
    maxItems: 1

patternProperties:
  '-cfg$':
    type: object
    description:
      A pinctrl node should contain at least one subnode representing the
      pinctrl groups available on the machine.

    additionalProperties: false

    patternProperties:
      '-pins$':
        type: object
        description: |
          Each subnode will list the pins it needs, and how they should
          be configured, with regard to muxer configuration, bias input
          enable/disable, input schmitt trigger enable, drive strength
          output enable/disable state. For configuration detail,
          refer to https://github.com/sophgo/sophgo-doc/.

        allOf:
          - $ref: pincfg-node.yaml#
          - $ref: pinmux-node.yaml#

        properties:
          pinmux:
            description: |
              The list of GPIOs and their mux settings that properties in the
              node apply to. This should be set using the PINMUX macro.

          bias-disable: true

          bias-pull-up:
            type: boolean

          bias-pull-down:
            type: boolean

          drive-strength-microamp:
            description: typical current when output low level.

          input-schmitt-enable: true

          input-schmitt-disable: true

        required:
          - pinmux

        additionalProperties: false

required:
  - compatible
  - reg

allOf:
  - if:
      properties:
        compatible:
          contains:
            const: sophgo,sg2042-pinctrl
    then:
      patternProperties:
        '-cfg$':
          patternProperties:
            '-pins$':
              properties:
                drive-strength-microamp:
                  enum: [ 5400, 8100, 10700, 13400,
                          16100, 18800, 21400, 24100,
                          26800, 29400, 32100, 34800,
                          37400, 40100, 42800, 45400 ]

  - if:
      properties:
        compatible:
          contains:
            const: sophgo,sg2044-pinctrl
    then:
      patternProperties:
        '-cfg$':
          patternProperties:
            '-pins$':
              properties:
                drive-strength-microamp:
                  enum: [ 3200, 6400, 9600, 12700,
                          15900, 19100, 22200, 25300,
                          29500, 32700, 35900, 39000,
                          42000, 45200, 48300, 51400]

additionalProperties: false

examples:
  - |
    #include <dt-bindings/pinctrl/pinctrl-sg2042.h>

    pinctrl@30011000 {
        compatible = "sophgo,sg2042-pinctrl";
        reg = <30011000 0x1000>;

        uart0_cfg: uart0-cfg {
            uart0-pins {
                pinmux = <PINMUX(PIN_UART0_TX, 0)>,
                         <PINMUX(PIN_UART0_RX, 0)>;
                bias-pull-up;
                drive-strength-microamp = <13400>;
            };
        };
    };

...