From b71b869bf677eaa65525f25c2b8519be659006a1 Mon Sep 17 00:00:00 2001 From: Alexandre Bourdiol Date: Tue, 4 May 2021 11:00:12 +0200 Subject: [PATCH] boards: stm32f4_disco: Use dts for clocks configuration Convert board to use of device tree for clocks configuration. Signed-off-by: Alexandre Bourdiol --- boards/arm/stm32f4_disco/stm32f4_disco.dts | 22 +++++++++++++++++++ .../arm/stm32f4_disco/stm32f4_disco_defconfig | 18 +-------------- 2 files changed, 23 insertions(+), 17 deletions(-) diff --git a/boards/arm/stm32f4_disco/stm32f4_disco.dts b/boards/arm/stm32f4_disco/stm32f4_disco.dts index 58501b981ff..e38caa8479d 100644 --- a/boards/arm/stm32f4_disco/stm32f4_disco.dts +++ b/boards/arm/stm32f4_disco/stm32f4_disco.dts @@ -64,6 +64,28 @@ status = "okay"; }; +&clk_hse { + clock-frequency = ; + status = "okay"; +}; + +&pll { + div-m = <8>; + mul-n = <336>; + div-p = <2>; + div-q = <7>; + clocks = <&clk_hse>; + status = "okay"; +}; + +&rcc { + clocks = <&pll>; + clock-frequency = ; + ahb-prescaler = <1>; + apb1-prescaler = <4>; + apb2-prescaler = <2>; +}; + &usart2 { pinctrl-0 = <&usart2_tx_pa2 &usart2_rx_pa3>; current-speed = <115200>; diff --git a/boards/arm/stm32f4_disco/stm32f4_disco_defconfig b/boards/arm/stm32f4_disco/stm32f4_disco_defconfig index 1aa849c84c7..984563e2cd9 100644 --- a/boards/arm/stm32f4_disco/stm32f4_disco_defconfig +++ b/boards/arm/stm32f4_disco/stm32f4_disco_defconfig @@ -2,8 +2,6 @@ CONFIG_SOC_SERIES_STM32F4X=y CONFIG_SOC_STM32F407XG=y -# 168MHz system clock -CONFIG_SYS_CLOCK_HW_CYCLES_PER_SEC=168000000 # Enable MPU CONFIG_ARM_MPU=y @@ -23,19 +21,5 @@ CONFIG_PINMUX=y # enable GPIO CONFIG_GPIO=y -# clock configuration +# Enable Clocks CONFIG_CLOCK_CONTROL=y - -# Clock configuration for Cube Clock control driver -CONFIG_CLOCK_STM32_HSE_CLOCK=8000000 -CONFIG_CLOCK_STM32_SYSCLK_SRC_PLL=y -# use HSE as PLL input -CONFIG_CLOCK_STM32_PLL_SRC_HSE=y -# produce 168MHz clock at PLL output -CONFIG_CLOCK_STM32_PLL_M_DIVISOR=8 -CONFIG_CLOCK_STM32_PLL_N_MULTIPLIER=336 -CONFIG_CLOCK_STM32_PLL_P_DIVISOR=2 -CONFIG_CLOCK_STM32_PLL_Q_DIVISOR=7 -CONFIG_CLOCK_STM32_AHB_PRESCALER=1 -CONFIG_CLOCK_STM32_APB1_PRESCALER=4 -CONFIG_CLOCK_STM32_APB2_PRESCALER=2