boards/st/stm32f4_disco/stm32f4_disco.dts

/*
 * Copyright (c) 2017 Linaro Limited
 *
 * SPDX-License-Identifier: Apache-2.0
 */

/dts-v1/;
#include <st/f4/stm32f407Xg.dtsi>
#include <st/f4/stm32f407v(e-g)tx-pinctrl.dtsi>
#include <zephyr/dt-bindings/input/input-event-codes.h>

/ {
	model = "STMicroelectronics STM32F4DISCOVERY board";
	compatible = "st,stm32f4discovery";

	chosen {
		zephyr,console = &usart2;
		zephyr,shell-uart = &usart2;
		zephyr,sram = &sram0;
		zephyr,flash = &flash0;
		zephyr,ccm = &ccm0;
		zephyr,canbus = &can2;
	};

	leds {
		compatible = "gpio-leds";

		orange_led_3: led_3 {
			gpios = <&gpiod 13 GPIO_ACTIVE_HIGH>;
			label = "User LD3";
		};

		green_led_4: led_4 {
			gpios = <&gpiod 12 GPIO_ACTIVE_HIGH>;
			label = "User LD4";
		};

		red_led_5: led_5 {
			gpios = <&gpiod 14 GPIO_ACTIVE_HIGH>;
			label = "User LD5";
		};

		blue_led_6: led_6 {
			gpios = <&gpiod 15 GPIO_ACTIVE_HIGH>;
			label = "User LD6";
		};
	};

	gpio_keys {
		compatible = "gpio-keys";

		user_button: button {
			label = "Key";
			gpios = <&gpioa 0 GPIO_ACTIVE_HIGH>;
			zephyr,code = <INPUT_KEY_0>;
		};
	};

	pwmleds: pwmleds {
		compatible = "pwm-leds";

		orange_pwm_led: orange_pwm_led {
			pwms = <&pwm4 2 PWM_USEC(100) PWM_POLARITY_NORMAL>;
		};

		green_pwm_led: green_pwm_led {
			pwms = <&pwm4 1 PWM_USEC(100) PWM_POLARITY_NORMAL>;
		};

		red_pwm_led: red_pwm_led {
			pwms = <&pwm4 3 PWM_USEC(100) PWM_POLARITY_NORMAL>;
		};

		blue_pwm_led: blue_pwm_led {
			pwms = <&pwm4 4 PWM_USEC(100) PWM_POLARITY_NORMAL>;
		};
	};

	aliases {
		led0 = &green_led_4;
		led1 = &orange_led_3;
		led2 = &red_led_5;
		led3 = &blue_led_6;
		sw0 = &user_button;
		die-temp0 = &die_temp;
		volt-sensor0 = &vref;
		volt-sensor1 = &vbat;
	};
};

&clk_lsi {
	status = "okay";
};

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

&pll {
	div-m = <8>;
	mul-n = <336>;
	div-p = <2>;
	div-q = <7>;
	clocks = <&clk_hse>;
	status = "okay";
};

&rcc {
	clocks = <&pll>;
	clock-frequency = <DT_FREQ_M(168)>;
	ahb-prescaler = <1>;
	apb1-prescaler = <4>;
	apb2-prescaler = <2>;
};

&usart2 {
	pinctrl-0 = <&usart2_tx_pa2 &usart2_rx_pa3>;
	pinctrl-names = "default";
	current-speed = <115200>;
	status = "okay";
};

&timers2 {
	status = "okay";

	pwm2: pwm {
		status = "okay";
		pinctrl-0 = <&tim2_ch1_pa0>;
		pinctrl-names = "default";
	};
};

&timers4 {
	status = "okay";

	pwm4: pwm {
		status = "okay";
		pinctrl-0 = <&tim4_ch1_pd12 &tim4_ch2_pd13 &tim4_ch3_pd14 &tim4_ch4_pd15>;
		pinctrl-names = "default";
	};
};

&rtc {
	clocks = <&rcc STM32_CLOCK_BUS_APB1 0x10000000>,
		 <&rcc STM32_SRC_LSI RTC_SEL(2)>;
	status = "okay";

	backup_regs {
		status = "okay";
	};
};

zephyr_udc0: &usbotg_fs {
	pinctrl-0 = <&usb_otg_fs_dm_pa11 &usb_otg_fs_dp_pa12>;
	pinctrl-names = "default";
	status = "okay";
};

&can2 {
	pinctrl-0 = <&can2_rx_pb5 &can2_tx_pb13>;
	pinctrl-names = "default";
	status = "okay";
};

&adc1 {
	pinctrl-0 = <&adc1_in1_pa1 &adc1_in6_pa6>;
	pinctrl-names = "default";
	st,adc-prescaler = <2>;
	status = "okay";
};

&die_temp {
	status = "okay";
};

&vref {
	status = "okay";
};

&vbat {
	status = "okay";
};

&dma1 {
	status = "okay";
};

&plli2s {
	/* Minimize audio clock error (with i2s mck-enabled) for all of:
	 * - 22.05kHz / 16b, 24b or 32b
	 * - 44.1kHz  / 16b, 24b or 32b
	 * - 88.2kHz  / 16b or 24b
	 * Note: because the PLLI2S is dependent on the main PLL, the latter
	 *       should not be changed without checking impact on PLLI2S
	 */
	mul-n = <271>;
	div-r = <2>;
	status = "okay";
};

&i2s3 {
	mck-enabled;
	pinctrl-0 = <&i2s3_ws_pa4 &i2s3_ck_pc10 &i2s3_sd_pc12 &i2s3_mck_pc7>;
	pinctrl-names = "default";
	clocks = <&rcc STM32_CLOCK(APB1, 15U)>,
		 <&rcc STM32_SRC_PLLI2S_R I2S_SEL(0)>;
	status = "okay";
};

&i2c1 {
	clock-frequency = <I2C_BITRATE_FAST>;
	pinctrl-0 = <&i2c1_scl_pb6 &i2c1_sda_pb9>;
	pinctrl-names = "default";
	status = "okay";

	audio_codec: cs43l22@4a {
		compatible = "cirrus,cs43l22";
		reg = <0x4a>;
		reset-gpios = <&gpiod 4 0>;
	};
};