dts/bindings/power/st,stm32-pwr.yaml

# Copyright (c) 2023 STMicroelectronics
# SPDX-License-Identifier: Apache-2.0

description: STM32 power controller

compatible: "st,stm32-pwr"

include: base.yaml

properties:
  reg:
    required: true

  wkup-pins-nb:
    type: int
    description: |
      Max nbr of system wake-up pins.
      For example wkup-pins-nb = <8>; on the stm32u5

  wkup-pin-srcs:
    type: int
    description: |
      Number of wake-up GPIO sources to select from for each wake-up pin.
      If not specified, that means there is only 1 GPIO source for each
      wake-up pin.

      For example, each wake-up pin on STM32U5 is associated with
      4 wake-up sources, 3 of them correspond to GPIOs.

  wkup-pins-pol:
    type: boolean
    description: |
      True if SoC has a wake-up pins polarity config register

  wkup-pins-pupd:
    type: boolean
    description: |
      True if SoC has pull-up/down config register(s) for GPIO ports
      that are associated with wake-up pins.

  "#address-cells":
    const: 1

  "#size-cells":
    const: 0

child-binding:
  description: |
    STM32 wake-up pin node.

    All nodes using this binding must be named "wkup-pin@[index]"
    index starts from 1

  properties:
    reg:
      type: array
      required: true
      description: Wake-up pin identifier, same as "index" in node name

    wkup-gpios:
      type: phandle-array
      description: |
        Specifies the GPIOs, if any, that are associated with the wake-up pin.

        For example, for GPIO B2 associated with wakeup source 1 on wake-up
        pin 1 on STM32U5 SoCs:
        wkup-gpios = <&gpiob 2 STM32_PWR_WKUP_PIN_SRC_1>, <...>;