zephyr/dts/bindings/pinctrl/nuvoton,numicro-pinctrl.yaml

# Copyright (c) 2022 SEAL AG
# SPDX-License-Identifier: Apache-2.0

description: |
  Nuvoton NuMicro pinctrl node. This node will define pin configurations in pin groups,
  and has the 'pinctrl' node identifier in the SOC's devicetree. Each group
  within the pin configuration defines the pin configuration for a peripheral,
  and each numbered subgroup in the pin group defines all the pins for that
  peripheral with the same configuration properties. The 'pinmux' property in
  a group selects the pins to be configured, and the remaining properties set
  configuration values for those pins. Here is an example group for UART0 pins:

  uart0_default: uart0_default {
    group0 {
      pinmux = <UART0_RXD_PB12>, <UART0_TXD_PB13>;
    };
  };

compatible: "nuvoton,numicro-pinctrl"

include: base.yaml

properties:
  reg:
    required: true

child-binding:
  description: NuMicro pin controller pin group
  child-binding:
    description: |
      NuMicro pin controller pin configuration node
    include:
      - name: pincfg-node.yaml
        property-allowlist:
          - bias-pull-down
          - bias-pull-up
          - drive-open-drain
          - input-schmitt-enable
          - input-disable
    properties:
      pinmux:
        required: true
        type: array
        description: |
          Pin mux selections for this group. See the SoC level pinctrl dtsi file
          for a defined list of these options.
      slew-rate:
        default: "normal"
        type: string
        enum:
          - "normal"
          - "high"
          - "fast"
        description: |
          Pin output slew rate. Sets the HSRENx register. If not set, defaults to the
          reset value (normal).
      input-debounce:
        type: boolean
        description: |
          enable the input debounce function