# Copyright (c) 2023, Linaro ltd
# SPDX-License-Identifier: Apache-2.0

description: |
  STM32F4 PLL I2S node binding:

  Takes same input as Main PLL. PLLM factor and PLL source are common with Main PLL

  1 output clocks supported, the frequency can be computed with the following formula:

    f(PLL_R) = f(VCO clock) / PLLR  --> PLLI2S

      with f(VCO clock) = f(PLL clock input) × (PLLNI2S / PLLM)


compatible: "st,stm32f4-plli2s-clock"

include: [clock-controller.yaml, base.yaml]

properties:
  "#clock-cells":
    const: 0

  mul-n:
    type: int
    required: true
    description: |
        PLLI2S multiplication factor for VCO
        Valid range may vary between parts: 50 - 432 , 192 - 432

  div-r:
    type: int
    required: true
    description: |
        PLLI2S division factor for I2S Clocks
    enum:
      - 2
      - 3
      - 4
      - 5
      - 6
      - 7