michaelh/zephyr
1
0
Fork 0
Code Releases Activity

boards: stm32l1_disco: 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 2021-04-30 14:09:11 +02:00 • committed by Maureen Helm
commit 61b6e2cc23
2 changed files with 21 additions and 12 deletions
Download patch file Download diff file Expand all files Collapse all files

20
boards/arm/stm32l1_disco/stm32l1_disco.dts
View file

@ -46,6 +46,26 @@
};
};
&clk_hsi {
status = "okay";
};
&pll {
div = <4>;
mul = <8>;
/* out of the box, MCO from stlink is not enabled, unlike later discos */
clocks = <&clk_hsi>;
status = "okay";
};
&rcc {
clocks = <&pll>;
clock-frequency = <DT_FREQ_M(32)>;
ahb-prescaler = <1>;
apb1-prescaler = <1>;
apb2-prescaler = <1>;
};
&usart1 {
pinctrl-0 = <&usart1_tx_pa9 &usart1_rx_pa10>;
current-speed = <115200>;

13
boards/arm/stm32l1_disco/stm32l1_disco_defconfig
View file

@ -2,7 +2,6 @@
CONFIG_SOC_SERIES_STM32L1X=y
CONFIG_SOC_STM32L151XB=y
CONFIG_SYS_CLOCK_HW_CYCLES_PER_SEC=32000000
# enable uart driver
CONFIG_SERIAL=y
@ -17,15 +16,5 @@ CONFIG_PINMUX=y
# enable GPIO
CONFIG_GPIO=y
# clock configuration
# Enable Clocks
CONFIG_CLOCK_CONTROL=y
CONFIG_CLOCK_STM32_SYSCLK_SRC_PLL=y
# out of the box, MCO from stlink is not enabled, unlike later discos
CONFIG_CLOCK_STM32_PLL_SRC_HSI=y
# produce 32MHz clock at PLL output
CONFIG_CLOCK_STM32_PLL_DIVISOR=4
CONFIG_CLOCK_STM32_PLL_MULTIPLIER=8
CONFIG_CLOCK_STM32_AHB_PRESCALER=1
CONFIG_CLOCK_STM32_APB1_PRESCALER=1
CONFIG_CLOCK_STM32_APB2_PRESCALER=1