michaelh/zephyr
1
0
Fork 0
Code Releases Activity

boards: nucleo_l152re: Use dts for clocks configuration

Browse source 
Convert board to use of device tree for clocks configuration.

Signed-off-by: Alexandre Bourdiol <alexandre.bourdiol@st.com>
This commit is contained in:
Alexandre Bourdiol 2021-04-28 14:44:01 +02:00 • committed by Anas Nashif
commit 8689ec55aa
2 changed files with 19 additions and 12 deletions
Download patch file Download diff file Expand all files Collapse all files

18
boards/arm/nucleo_l152re/nucleo_l152re.dts
View file

@ -43,6 +43,24 @@
};
};
&clk_hsi {
status = "okay";
};
&pll {
div = <2>;
mul = <4>;
clocks = <&clk_hsi>;
status = "okay";
};
&rcc {
clocks = <&pll>;
clock-frequency = <DT_FREQ_M(32)>;
ahb-prescaler = <1>;
apb1-prescaler = <1>;
};
&usart2 {
pinctrl-0 = <&usart2_tx_pa2 &usart2_rx_pa3>;
current-speed = <115200>;

13
boards/arm/nucleo_l152re/nucleo_l152re_defconfig
View file

@ -2,8 +2,6 @@
CONFIG_SOC_SERIES_STM32L1X=y
CONFIG_SOC_STM32L152XE=y
# 32MHz system clock
CONFIG_SYS_CLOCK_HW_CYCLES_PER_SEC=32000000
# Enable MPU
CONFIG_ARM_MPU=y
@ -23,14 +21,5 @@ CONFIG_PINMUX=y
# enable GPIO
CONFIG_GPIO=y
# clock configuration
# Enable Clocks
CONFIG_CLOCK_CONTROL=y
# SYSCLK selection
CONFIG_CLOCK_STM32_SYSCLK_SRC_PLL=y
# Use HSI source
CONFIG_CLOCK_STM32_PLL_SRC_HSI=y
CONFIG_CLOCK_STM32_PLL_DIVISOR=2
# produce 32Mhz clock at PLL output
CONFIG_CLOCK_STM32_PLL_MULTIPLIER=4
CONFIG_CLOCK_STM32_AHB_PRESCALER=1
CONFIG_CLOCK_STM32_APB1_PRESCALER=1