From aeb76557cc82c1832d2b1ef12731be2f6524d055 Mon Sep 17 00:00:00 2001 From: Alexandre Bourdiol Date: Fri, 30 Apr 2021 17:58:49 +0200 Subject: [PATCH] boards: nucleo_f303re: Use dts for clocks configuration Convert board to use of device tree for clocks configuration. Signed-off-by: Alexandre Bourdiol --- boards/arm/nucleo_f303re/nucleo_f303re.dts | 21 +++++++++++++++++++ .../arm/nucleo_f303re/nucleo_f303re_defconfig | 19 +---------------- 2 files changed, 22 insertions(+), 18 deletions(-) diff --git a/boards/arm/nucleo_f303re/nucleo_f303re.dts b/boards/arm/nucleo_f303re/nucleo_f303re.dts index 5add8caa74..f53a2caa5b 100644 --- a/boards/arm/nucleo_f303re/nucleo_f303re.dts +++ b/boards/arm/nucleo_f303re/nucleo_f303re.dts @@ -43,6 +43,27 @@ }; }; +&clk_hse { + hse-bypass; + clock-frequency = ; /* STLink 8MHz clock */ + status = "okay"; +}; + +&pll { + prediv = <1>; + mul = <9>; + clocks = <&clk_hse>; + status = "okay"; +}; + +&rcc { + clocks = <&pll>; + clock-frequency = ; + ahb-prescaler = <1>; + apb1-prescaler = <2>; + apb2-prescaler = <1>; +}; + &usart2 { pinctrl-0 = <&usart2_tx_pa2 &usart2_rx_pa3>; current-speed = <115200>; diff --git a/boards/arm/nucleo_f303re/nucleo_f303re_defconfig b/boards/arm/nucleo_f303re/nucleo_f303re_defconfig index 9e23e811e5..22686be206 100644 --- a/boards/arm/nucleo_f303re/nucleo_f303re_defconfig +++ b/boards/arm/nucleo_f303re/nucleo_f303re_defconfig @@ -2,8 +2,6 @@ CONFIG_SOC_SERIES_STM32F3X=y CONFIG_SOC_STM32F303XE=y -# 72 MHz system clock -CONFIG_SYS_CLOCK_HW_CYCLES_PER_SEC=72000000 CONFIG_SERIAL=y @@ -23,20 +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 -# however, the board does not have an external oscillator, so just use -# the 8MHz clock signal coming from integrated STLink -CONFIG_CLOCK_STM32_HSE_BYPASS=y -# produce 72MHz clock at PLL output -CONFIG_CLOCK_STM32_PLL_PREDIV1=1 -CONFIG_CLOCK_STM32_PLL_MULTIPLIER=9 -CONFIG_CLOCK_STM32_AHB_PRESCALER=1 -CONFIG_CLOCK_STM32_APB1_PRESCALER=2 -CONFIG_CLOCK_STM32_APB2_PRESCALER=1