michaelh/zephyr
1
0
Fork 0
Code Releases Activity

boards: nucleo_f207zg: 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 2021-04-29 09:25:53 +02:00 • committed by Anas Nashif
commit 704a0e4cb0
2 changed files with 24 additions and 19 deletions
Download patch file Download diff file Expand all files Collapse all files

23
boards/arm/nucleo_f207zg/nucleo_f207zg.dts
View file

@ -52,6 +52,29 @@
}; };
}; };
&clk_hse {
hse-bypass;
clock-frequency = <DT_FREQ_M(8)>; /* STLink 8MHz clock */
status = "okay";
};
&pll {
div-m = <8>;
mul-n = <240>;
div-p = <2>;
div-q = <5>;
clocks = <&clk_hse>;
status = "okay";
};
&rcc {
clocks = <&pll>;
clock-frequency = <DT_FREQ_M(120)>;
ahb-prescaler = <1>;
apb1-prescaler = <4>;
apb2-prescaler = <2>;
};
&spi1 { &spi1 {
pinctrl-0 = <&spi1_nss_pa4 &spi1_sck_pa5 pinctrl-0 = <&spi1_nss_pa4 &spi1_sck_pa5
&spi1_miso_pa6 &spi1_mosi_pa7>; &spi1_miso_pa6 &spi1_mosi_pa7>;

20
boards/arm/nucleo_f207zg/nucleo_f207zg_defconfig
View file

@ -2,7 +2,6 @@
CONFIG_SOC_SERIES_STM32F2X=y CONFIG_SOC_SERIES_STM32F2X=y
CONFIG_SOC_STM32F207XX=y CONFIG_SOC_STM32F207XX=y
CONFIG_SYS_CLOCK_HW_CYCLES_PER_SEC=120000000
CONFIG_SERIAL=y CONFIG_SERIAL=y
@ -22,22 +21,5 @@ 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_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 120MHz clock at PLL output
CONFIG_CLOCK_STM32_PLL_M_DIVISOR=8
CONFIG_CLOCK_STM32_PLL_N_MULTIPLIER=240
CONFIG_CLOCK_STM32_PLL_P_DIVISOR=2
CONFIG_CLOCK_STM32_PLL_Q_DIVISOR=5
CONFIG_CLOCK_STM32_AHB_PRESCALER=1
CONFIG_CLOCK_STM32_APB1_PRESCALER=4
CONFIG_CLOCK_STM32_APB2_PRESCALER=2