From 8be1244c9ecfabc3aabf23412c318b4cd435efe6 Mon Sep 17 00:00:00 2001 From: Erwan Gouriou Date: Tue, 4 May 2021 10:47:23 +0200 Subject: [PATCH] boards: stm32f103_mini: Use dts for clocks configuration Convert board to use of device tree for clocks configuration. Note: Fixed sys clock frequency that was not taking into account systematic /2 divisor when HSI is selected as pll source. Signed-off-by: Erwan Gouriou --- boards/arm/stm32f103_mini/stm32f103_mini.dts | 18 ++++++++++++++++++ .../stm32f103_mini/stm32f103_mini_defconfig | 13 +------------ 2 files changed, 19 insertions(+), 12 deletions(-) diff --git a/boards/arm/stm32f103_mini/stm32f103_mini.dts b/boards/arm/stm32f103_mini/stm32f103_mini.dts index c5e3a328a89..77b400142c5 100644 --- a/boards/arm/stm32f103_mini/stm32f103_mini.dts +++ b/boards/arm/stm32f103_mini/stm32f103_mini.dts @@ -32,6 +32,24 @@ }; }; +&clk_hsi { + status = "okay"; +}; + +&pll { + mul = <9>; + clocks = <&clk_hsi>; + status = "okay"; +}; + +&rcc { + clocks = <&pll>; + clock-frequency = ; + ahb-prescaler = <1>; + apb1-prescaler = <2>; + apb2-prescaler = <1>; +}; + &usart1 { pinctrl-0 = <&usart1_tx_pa9 &usart1_rx_pa10>; current-speed = <115200>; diff --git a/boards/arm/stm32f103_mini/stm32f103_mini_defconfig b/boards/arm/stm32f103_mini/stm32f103_mini_defconfig index 54e1a4d4531..e86eadbf22b 100644 --- a/boards/arm/stm32f103_mini/stm32f103_mini_defconfig +++ b/boards/arm/stm32f103_mini/stm32f103_mini_defconfig @@ -2,8 +2,6 @@ CONFIG_SOC_SERIES_STM32F1X=y CONFIG_SOC_STM32F103XE=y -# 72MHz system clock -CONFIG_SYS_CLOCK_HW_CYCLES_PER_SEC=72000000 # enable uart driver CONFIG_SERIAL=y @@ -17,14 +15,5 @@ CONFIG_PINMUX=y # enable GPIO CONFIG_GPIO=y -# clock configuration +# enable clocks CONFIG_CLOCK_CONTROL=y -CONFIG_CLOCK_STM32_SYSCLK_SRC_PLL=y -# Use the internal 8MHz clock -CONFIG_CLOCK_STM32_PLL_SRC_HSI=y -# produce 72MHz clock at PLL output -CONFIG_CLOCK_STM32_PLL_MULTIPLIER=9 -CONFIG_CLOCK_STM32_AHB_PRESCALER=1 -# APB1 clock must not to exceed 36MHz limit -CONFIG_CLOCK_STM32_APB1_PRESCALER=2 -CONFIG_CLOCK_STM32_APB2_PRESCALER=1