kernel/Documentation/devicetree/bindings/pinctrl/renesas,rzg2l-pinctrl.yaml

# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/pinctrl/renesas,rzg2l-pinctrl.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Renesas RZ/G2L combined Pin and GPIO controller

maintainers:
  - Geert Uytterhoeven <geert+renesas@glider.be>
  - Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>

description:
  The Renesas SoCs of the RZ/G2L series feature a combined Pin and GPIO
  controller.
  Pin multiplexing and GPIO configuration is performed on a per-pin basis.
  Each port features up to 8 pins, each of them configurable for GPIO function
  (port mode) or in alternate function mode.
  Up to 8 different alternate function modes exist for each single pin.

properties:
  compatible:
    enum:
      - renesas,r9a07g044-pinctrl # RZ/G2{L,LC}

  reg:
    maxItems: 1

  gpio-controller: true

  '#gpio-cells':
    const: 2
    description:
      The first cell contains the global GPIO port index, constructed using the
      RZG2L_GPIO() helper macro in <dt-bindings/pinctrl/rzg2l-pinctrl.h> and the
      second cell represents consumer flag as mentioned in ../gpio/gpio.txt
      E.g. "RZG2L_GPIO(39, 1)" for P39_1.

  gpio-ranges:
    maxItems: 1

  clocks:
    maxItems: 1

  power-domains:
    maxItems: 1

  resets:
    items:
      - description: GPIO_RSTN signal
      - description: GPIO_PORT_RESETN signal
      - description: GPIO_SPARE_RESETN signal

additionalProperties:
  anyOf:
    - type: object
      allOf:
        - $ref: pincfg-node.yaml#
        - $ref: pinmux-node.yaml#

      description:
        Pin controller client devices use pin configuration subnodes (children
        and grandchildren) for desired pin configuration.
        Client device subnodes use below standard properties.

      properties:
        phandle: true
        pinmux:
          description:
            Values are constructed from GPIO port number, pin number, and
            alternate function configuration number using the RZG2L_PORT_PINMUX()
            helper macro in <dt-bindings/pinctrl/rzg2l-pinctrl.h>.
        pins: true
        drive-strength:
          enum: [ 2, 4, 8, 12 ]
        power-source:
          enum: [ 1800, 2500, 3300 ]
        slew-rate: true
        gpio-hog: true
        gpios: true
        input-enable: true
        output-high: true
        output-low: true
        line-name: true

    - type: object
      properties:
        phandle: true

      additionalProperties:
        $ref: "#/additionalProperties/anyOf/0"

required:
  - compatible
  - reg
  - gpio-controller
  - '#gpio-cells'
  - gpio-ranges
  - clocks
  - power-domains
  - resets

examples:
  - |
    #include <dt-bindings/pinctrl/rzg2l-pinctrl.h>
    #include <dt-bindings/clock/r9a07g044-cpg.h>

    pinctrl: pinctrl@11030000 {
            compatible = "renesas,r9a07g044-pinctrl";
            reg = <0x11030000 0x10000>;

            gpio-controller;
            #gpio-cells = <2>;
            gpio-ranges = <&pinctrl 0 0 392>;
            clocks = <&cpg CPG_MOD R9A07G044_GPIO_HCLK>;
            resets = <&cpg R9A07G044_GPIO_RSTN>,
                     <&cpg R9A07G044_GPIO_PORT_RESETN>,
                     <&cpg R9A07G044_GPIO_SPARE_RESETN>;
            power-domains = <&cpg>;

            scif0_pins: serial0 {
                    pinmux = <RZG2L_PORT_PINMUX(38, 0, 1)>, /* Tx */
                             <RZG2L_PORT_PINMUX(38, 1, 1)>; /* Rx */
            };

            i2c1_pins: i2c1 {
                    pins = "RIIC1_SDA", "RIIC1_SCL";
                    input-enable;
            };

            sd1-pwr-en-hog {
                    gpio-hog;
                    gpios = <RZG2L_GPIO(39, 2) 0>;
                    output-high;
                    line-name = "sd1_pwr_en";
            };

            sdhi1_pins: sd1 {
                    sd1_mux {
                            pinmux = <RZG2L_PORT_PINMUX(19, 0, 1)>, /* CD */
                                     <RZG2L_PORT_PINMUX(19, 1, 1)>; /* WP */
                            power-source  = <3300>;
                    };

                    sd1_data {
                            pins = "SD1_DATA0", "SD1_DATA1", "SD1_DATA2", "SD1_DATA3";
                            power-source  = <3300>;
                    };

                    sd1_ctrl {
                            pins = "SD1_CLK", "SD1_CMD";
                            power-source  = <3300>;
                    };
            };
    };