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boards: nucleo_f303k8: 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 15:27:25 +02:00 • committed by Anas Nashif
commit 229ec98da9
2 changed files with 20 additions and 16 deletions
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19
boards/arm/nucleo_f303k8/nucleo_f303k8.dts
View file

@ -40,6 +40,25 @@
}; };
}; };
&clk_hsi {
status = "okay";
};
&pll {
prediv = <1>;
mul = <9>;
clocks = <&clk_hsi>;
status = "okay";
};
&rcc {
clocks = <&pll>;
clock-frequency = <DT_FREQ_M(72)>;
ahb-prescaler = <1>;
apb1-prescaler = <2>;
apb2-prescaler = <1>;
};
&timers2 { &timers2 {
status = "okay"; status = "okay";

17
boards/arm/nucleo_f303k8/nucleo_f303k8_defconfig
View file

@ -2,8 +2,6 @@
CONFIG_SOC_SERIES_STM32F3X=y CONFIG_SOC_SERIES_STM32F3X=y
CONFIG_SOC_STM32F303X8=y CONFIG_SOC_STM32F303X8=y
# 72 MHz system clock
CONFIG_SYS_CLOCK_HW_CYCLES_PER_SEC=72000000
CONFIG_SERIAL=y CONFIG_SERIAL=y
@ -17,18 +15,5 @@ CONFIG_PINMUX=y
# enable GPIO # enable GPIO
CONFIG_GPIO=y CONFIG_GPIO=y
# clock configuration # Enable Clocks
CONFIG_CLOCK_CONTROL=y CONFIG_CLOCK_CONTROL=y
# Clock configuration for Cube Clock control driver
CONFIG_CLOCK_STM32_SYSCLK_SRC_PLL=y
# use HSI as PLL input
CONFIG_CLOCK_STM32_PLL_SRC_HSI=y
# however, the board does not have an external oscillator, so just use
# the 8MHz clock signal coming from integrated STLink
# produce 72MHz clock at PLL output
CONFIG_CLOCK_STM32_PLL_PREDIV=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