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boards: nucleo_l073rz: Use dts for clocks configuration

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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 2021-04-29 14:45:55 +02:00 • committed by Anas Nashif
commit 5cb13b2784
2 changed files with 22 additions and 19 deletions
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21
boards/arm/nucleo_l073rz/nucleo_l073rz.dts
View file

@ -42,6 +42,27 @@
};
};
&clk_hse {
hse-bypass;
clock-frequency = <DT_FREQ_M(8)>; /* STLink 8MHz clock */
status = "okay";
};
&pll {
div = <2>;
mul = <8>;
clocks = <&clk_hse>;
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_pb6 &usart1_rx_pb7>;
current-speed = <115200>;

20
boards/arm/nucleo_l073rz/nucleo_l073rz_defconfig
View file

@ -6,9 +6,6 @@ CONFIG_SOC_SERIES_STM32L0X=y
# Platform Configuration
CONFIG_SOC_STM32L073XX=y
# General Kernel Options
CONFIG_SYS_CLOCK_HW_CYCLES_PER_SEC=32000000
# Enable MPU
CONFIG_ARM_MPU=y
@ -25,20 +22,5 @@ CONFIG_PINMUX=y
# GPIO Controller
CONFIG_GPIO=y
# Clock configuration
# Enable Clocks
CONFIG_CLOCK_CONTROL=y
# SYSCLK selection
CONFIG_CLOCK_STM32_SYSCLK_SRC_PLL=y
# HSE configuration
CONFIG_CLOCK_STM32_HSE_CLOCK=8000000
# 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
# PLL configuration
CONFIG_CLOCK_STM32_PLL_SRC_HSE=y
# produce 32MHz clock at PLL output
CONFIG_CLOCK_STM32_PLL_MULTIPLIER=8
CONFIG_CLOCK_STM32_PLL_DIVISOR=2
CONFIG_CLOCK_STM32_AHB_PRESCALER=1
CONFIG_CLOCK_STM32_APB1_PRESCALER=1
CONFIG_CLOCK_STM32_APB2_PRESCALER=1