st,stm32f0-pll-clock

Vendor: STMicroelectronics N.V.

Description

Main PLL node binding for STM32F0 and STM32F3 devices.

Takes one of clk_hse or clk_hsi as input clock.

Note: Some STM32F0 SoC variants (STM32072 for instance) may also support HSI48
as input clock. This case is not supported yet.

Frequency calculation for output clock is as follows:

  f(PLLCLK) = f(PLLIN) x PLLMUL   --> SYSCLK (System Clock)

  with, depending on the case:
          If input_clk = clk_hse
            f(PLLIN) = f(input_clk) / PREDIV
          If input_clk = clk_hsi
            On STM32F3, STM32F03x, STM32F05x, STM32F030x4, STM32F030x6 and STM32F030x8
              f(PLLIN) = f(input_clk) / 2
            On STM32F04x, STM32F07x, STM32F09x, STM32F070x6, STM32F070xB and STM32F030xC
              f(PLLIN) = f(input_clk) / PREDIV

The PLL output frequency must be set in range 16-48MHz

Properties

Properties not inherited from the base binding file.

Name

Type

Details

#clock-cells

int

 
Number of items to expect in a Clock specifier

This property is required.

prediv

int

 
Configurable prescaler
Valid range: 1 - 16

This property is required.

mul

int

 
PLL multiplication factor for output clock
Valid range: 2 - 16

This property is required.