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STM32: Board conversion to DT clock configuration. STM32F3 #34742

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merged 3 commits into from
May 3, 2021
Merged

STM32: Board conversion to DT clock configuration. STM32F3 #34742

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5069135
boards: nucleo_f302r8: Use dts for clocks configuration
ABOSTM Apr 30, 2021
57eb18b
boards: nucleo_f303re: Use dts for clocks configuration
ABOSTM Apr 30, 2021
85fc3a9
boards: stm32373c_eval: Use dts for clocks configuration
ABOSTM Apr 30, 2021
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21 changes: 21 additions & 0 deletions boards/arm/nucleo_f302r8/nucleo_f302r8.dts
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Original file line number Diff line number Diff line change
Expand Up @@ -42,6 +42,27 @@
};
};

&clk_hse {
hse-bypass;
clock-frequency = <DT_FREQ_M(8)>; /* STLink 8MHz clock */
status = "okay";
};

&pll {
prediv = <1>;
mul = <9>;
clocks = <&clk_hse>;
status = "okay";
};

&rcc {
clocks = <&pll>;
clock-frequency = <DT_FREQ_M(72)>;
ahb-prescaler = <1>;
apb1-prescaler = <2>;
apb2-prescaler = <1>;
};

&i2c1 {
pinctrl-0 = <&i2c1_scl_pb8 &i2c1_sda_pb9>;
status = "okay";
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19 changes: 1 addition & 18 deletions boards/arm/nucleo_f302r8/nucleo_f302r8_defconfig
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Original file line number Diff line number Diff line change
Expand Up @@ -2,8 +2,6 @@

CONFIG_SOC_SERIES_STM32F3X=y
CONFIG_SOC_STM32F302X8=y
# 72 MHz system clock
CONFIG_SYS_CLOCK_HW_CYCLES_PER_SEC=72000000

CONFIG_SERIAL=y

Expand All @@ -17,20 +15,5 @@ CONFIG_PINMUX=y
# enable GPIO
CONFIG_GPIO=y

# clock configuration
# Enable Clocks
CONFIG_CLOCK_CONTROL=y

# Clock configuration for Cube Clock control driver
CONFIG_CLOCK_STM32_HSE_CLOCK=8000000
CONFIG_CLOCK_STM32_SYSCLK_SRC_PLL=y
# use HSE as PLL input
CONFIG_CLOCK_STM32_PLL_SRC_HSE=y
# 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
# 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
21 changes: 21 additions & 0 deletions boards/arm/nucleo_f303re/nucleo_f303re.dts
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Original file line number Diff line number Diff line change
Expand Up @@ -43,6 +43,27 @@
};
};

&clk_hse {
hse-bypass;
clock-frequency = <DT_FREQ_M(8)>; /* STLink 8MHz clock */
status = "okay";
};

&pll {
prediv = <1>;
mul = <9>;
clocks = <&clk_hse>;
status = "okay";
};

&rcc {
clocks = <&pll>;
clock-frequency = <DT_FREQ_M(72)>;
ahb-prescaler = <1>;
apb1-prescaler = <2>;
apb2-prescaler = <1>;
};

&usart2 {
pinctrl-0 = <&usart2_tx_pa2 &usart2_rx_pa3>;
current-speed = <115200>;
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19 changes: 1 addition & 18 deletions boards/arm/nucleo_f303re/nucleo_f303re_defconfig
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Original file line number Diff line number Diff line change
Expand Up @@ -2,8 +2,6 @@

CONFIG_SOC_SERIES_STM32F3X=y
CONFIG_SOC_STM32F303XE=y
# 72 MHz system clock
CONFIG_SYS_CLOCK_HW_CYCLES_PER_SEC=72000000

CONFIG_SERIAL=y

Expand All @@ -23,20 +21,5 @@ CONFIG_PINMUX=y
# enable GPIO
CONFIG_GPIO=y

# clock configuration
# Enable Clocks
CONFIG_CLOCK_CONTROL=y

# Clock configuration for Cube Clock control driver
CONFIG_CLOCK_STM32_HSE_CLOCK=8000000
CONFIG_CLOCK_STM32_SYSCLK_SRC_PLL=y
# use HSE as PLL input
CONFIG_CLOCK_STM32_PLL_SRC_HSE=y
# 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
# produce 72MHz clock at PLL output
CONFIG_CLOCK_STM32_PLL_PREDIV1=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
20 changes: 20 additions & 0 deletions boards/arm/stm32373c_eval/stm32373c_eval.dts
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Original file line number Diff line number Diff line change
Expand Up @@ -41,6 +41,26 @@
};
};

&clk_hse {
clock-frequency = <DT_FREQ_M(8)>;
status = "okay";
};

&pll {
prediv = <1>;
mul = <9>;
clocks = <&clk_hse>;
status = "okay";
};

&rcc {
clocks = <&pll>;
clock-frequency = <DT_FREQ_M(72)>;
ahb-prescaler = <1>;
apb1-prescaler = <2>;
apb2-prescaler = <2>;
};

&usart2 {
pinctrl-0 = <&usart2_tx_pd5 &usart2_rx_pd6>;
current-speed = <115200>;
Expand Down
17 changes: 1 addition & 16 deletions boards/arm/stm32373c_eval/stm32373c_eval_defconfig
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Original file line number Diff line number Diff line change
Expand Up @@ -15,9 +15,6 @@ CONFIG_ARM_MPU=y
# Enable HW stack protection
CONFIG_HW_STACK_PROTECTION=y

# General Kernel Options
CONFIG_SYS_CLOCK_HW_CYCLES_PER_SEC=72000000

# Serial Drivers
CONFIG_SERIAL=y
CONFIG_UART_INTERRUPT_DRIVEN=y
Expand All @@ -31,17 +28,5 @@ 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
# PLL configuration
CONFIG_CLOCK_STM32_PLL_SRC_HSE=y
# 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=2