dts/bindings/pwm/microchip,xec-pwmbbled.yaml

# Copyright (c) 2019, Intel Corporation
# SPDX-License-Identifier: Apache-2.0

description: Microchip XEC PWM using BBLED hardware

include: [pwm-controller.yaml, base.yaml, pinctrl-device.yaml]

compatible: "microchip,xec-pwmbbled"

properties:
  reg:
    required: true

  interrupts:
    required: true

  girqs:
    type: array
    required: true
    description: Array of pairs of GIRQ number and bit position

  pcrs:
    type: array
    required: true
    description: BBLED PCR register index and bit position

  clock-select:
    type: string
    required: true
    description: |
      Clock source selection: 32 KHz is available in deep sleep.
      - PWM_BBLED_CLK_AHB: Clock source is the PLL based AHB clock
      - PWM_BBLED_CLK_32K: Clock source is the 32KHz domain
    enum:
      - "PWM_BBLED_CLK_32K"
      - "PWM_BBLED_CLK_48M"

  pinctrl-0:
    required: true

  pinctrl-names:
    required: true

  "#pwm-cells":
    const: 3

  enable-low-power-32k:
    type: boolean
    description: |
      BBLED has two clock inputs.
      - Main system clock (48MHz)
      - 32KHz Core clock (32.768KHz)
      When BBLED enter into Suspend state, 48MHz clock will be switched off by
      PCR(Power, Clock and Reset) block. But 32KHz Core clock will be available to BBLED.
      There may be a product requirement, either to blink (or) not blink LED in Suspend state.
      Property "enable-low-power-32k" shall be used along with 32KHz clock to blink (or) not blink
      the LED in Suspend state.

pwm-cells:
  - channel
  - period
  - flags