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boards: nucleo_l053r8: Move clock config to DT

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Use DT to configure board clocks

Signed-off-by: Erwan Gouriou <erwan.gouriou@linaro.org>
This commit is contained in:
Erwan Gouriou 2021-04-13 11:07:35 +02:00 • committed by Carles Cufí
commit 7b55d07a2d
2 changed files with 23 additions and 19 deletions
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22
boards/arm/nucleo_l053r8/nucleo_l053r8.dts
View file

@ -43,6 +43,28 @@
};
};
&clk_hse{
status = "okay";
clock-frequency = <DT_FREQ_M(8)>;
hse-bypass;
};
&pll {
clocks = <&clk_hse>;
mul = <8>;
div = <2>;
status = "okay";
};
&rcc {
clocks = <&pll>;
clock-frequency = <DT_FREQ_M(32)>;
ahb-prescaler = <1>;
apb1-prescaler = <1>;
apb2-prescaler = <1>;
};
/* Due to limited available memory, don't enable gpiod and gpiof */
/* (Test cases fail due to 'SRAM' region overflow) */
&gpiod {status = "disabled";};

20
boards/arm/nucleo_l053r8/nucleo_l053r8_defconfig
View file

@ -6,9 +6,6 @@ CONFIG_SOC_SERIES_STM32L0X=y
# Platform Configuration
CONFIG_SOC_STM32L053XX=y
# General Kernel Options
CONFIG_SYS_CLOCK_HW_CYCLES_PER_SEC=32000000
# Enable MPU
CONFIG_ARM_MPU=y
@ -33,20 +30,5 @@ CONFIG_PINMUX=y
# GPIO Controller
CONFIG_GPIO=y
# Clock configuration
# Clock controller
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