xref: /kernel/linux/linux-6.6/Documentation/devicetree/bindings/pinctrl/starfive,jh7110-aon-pinctrl.yaml

# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
%YAML 1.2
---
$id: http://devicetree.org/schemas/pinctrl/starfive,jh7110-aon-pinctrl.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: StarFive JH7110 AON Pin Controller

description: |
  Bindings for the JH7110 RISC-V SoC from StarFive Technology Ltd.

  Out of the SoC's many pins only the ones named PAD_RGPIO0 to PAD_RGPIO3
  can be multiplexed and have configurable bias, drive strength,
  schmitt trigger etc.
  Some peripherals such as PWM have their I/O go through the 4 "GPIOs".

maintainers:
  - Jianlong Huang <jianlong.huang@starfivetech.com>

properties:
  compatible:
    const: starfive,jh7110-aon-pinctrl

  reg:
    maxItems: 1

  resets:
    maxItems: 1

  interrupts:
    maxItems: 1

  interrupt-controller: true

  '#interrupt-cells':
    const: 2

  gpio-controller: true

  '#gpio-cells':
    const: 2

patternProperties:
  '-[0-9]+$':
    type: object
    additionalProperties: false
    patternProperties:
      '-pins$':
        type: object
        description: |
          A pinctrl node should contain at least one subnode representing the
          pinctrl groups available on the machine. 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/disable, slew-rate and drive strength.
        allOf:
          - $ref: /schemas/pinctrl/pincfg-node.yaml
          - $ref: /schemas/pinctrl/pinmux-node.yaml
        additionalProperties: false

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

          bias-disable: true

          bias-pull-up:
            type: boolean

          bias-pull-down:
            type: boolean

          drive-strength:
            enum: [ 2, 4, 8, 12 ]

          input-enable: true

          input-disable: true

          input-schmitt-enable: true

          input-schmitt-disable: true

          slew-rate:
            maximum: 1

required:
  - compatible
  - reg
  - interrupts
  - interrupt-controller
  - '#interrupt-cells'
  - gpio-controller
  - '#gpio-cells'

additionalProperties: false

examples:
  - |
    pinctrl@17020000 {
        compatible = "starfive,jh7110-aon-pinctrl";
        reg = <0x17020000 0x10000>;
        resets = <&aoncrg 2>;
        interrupts = <85>;
        interrupt-controller;
        #interrupt-cells = <2>;
        gpio-controller;
        #gpio-cells = <2>;

        pwm-0 {
            pwm-pins {
                pinmux = <0xff030802>;
                bias-disable;
                drive-strength = <12>;
                input-disable;
                input-schmitt-disable;
                slew-rate = <0>;
            };
        };
    };

...