u-boot-brain/arch/arm/dts/stm32f429-disco.dts

// SPDX-License-Identifier: GPL-2.0+ OR X11
/*
 * Copyright 2015 - Maxime Coquelin <mcoquelin.stm32@gmail.com>
 */

/dts-v1/;
#include "stm32f429.dtsi"
#include "stm32f429-pinctrl.dtsi"
#include <dt-bindings/input/input.h>
#include <dt-bindings/interrupt-controller/irq.h>
#include <dt-bindings/gpio/gpio.h>

/ {
	model = "STMicroelectronics STM32F429i-DISCO board";
	compatible = "st,stm32f429i-disco", "st,stm32f429";

	chosen {
		bootargs = "root=/dev/ram";
		stdout-path = "serial0:115200n8";
	};

	memory@90000000 {
		device_type = "memory";
		reg = <0x90000000 0x800000>;
	};

	aliases {
		serial0 = &usart1;
	};

	leds {
		compatible = "gpio-leds";
		led-red {
			gpios = <&gpiog 14 0>;
		};
		led-green {
			gpios = <&gpiog 13 0>;
			linux,default-trigger = "heartbeat";
		};
	};

	gpio_keys {
		compatible = "gpio-keys";
		#address-cells = <1>;
		#size-cells = <0>;
		autorepeat;
		button@0 {
			label = "User";
			linux,code = <KEY_HOME>;
			gpios = <&gpioa 0 0>;
		};
	};

	/* This turns on vbus for otg for host mode (dwc2) */
	vcc5v_otg: vcc5v-otg-regulator {
		compatible = "regulator-fixed";
		gpio = <&gpioc 4 0>;
		regulator-name = "vcc5_host1";
		regulator-always-on;
	};
};

&clk_hse {
	clock-frequency = <8000000>;
};

&crc {
	status = "okay";
};

&i2c3 {
	pinctrl-names = "default";
	pinctrl-0 = <&i2c3_pins>;
	clock-frequency = <100000>;
	status = "okay";

	stmpe811@41 {
		compatible = "st,stmpe811";
		reg = <0x41>;
		interrupts = <15 IRQ_TYPE_EDGE_FALLING>;
		interrupt-parent = <&gpioa>;
		/* 3.25 MHz ADC clock speed */
		st,adc-freq = <1>;
		/* 12-bit ADC */
		st,mod-12b = <1>;
		/* internal ADC reference */
		st,ref-sel = <0>;
		/* ADC converstion time: 80 clocks */
		st,sample-time = <4>;

		stmpe_touchscreen {
			compatible = "st,stmpe-ts";
			/* 8 sample average control */
			st,ave-ctrl = <3>;
			/* 7 length fractional part in z */
			st,fraction-z = <7>;
			/*
			 * 50 mA typical 80 mA max touchscreen drivers
			 * current limit value
			 */
			st,i-drive = <1>;
			/* 1 ms panel driver settling time */
			st,settling = <3>;
			/* 5 ms touch detect interrupt delay */
			st,touch-det-delay = <5>;
		};

		stmpe_adc {
			compatible = "st,stmpe-adc";
			/* forbid to use ADC channels 3-0 (touch) */
			st,norequest-mask = <0x0F>;
		};
	};
};

&ltdc {
	status = "okay";
	pinctrl-0 = <&ltdc_pins_b>;
	pinctrl-names = "default";

	port {
		ltdc_out_rgb: endpoint {
			remote-endpoint = <&panel_in_rgb>;
		};
	};
};

&rtc {
	assigned-clocks = <&rcc 1 CLK_RTC>;
	assigned-clock-parents = <&rcc 1 CLK_LSI>;
	status = "okay";
};

&spi5 {
	status = "okay";
	pinctrl-0 = <&spi5_pins>;
	pinctrl-names = "default";
	#address-cells = <1>;
	#size-cells = <0>;
	cs-gpios = <&gpioc 1 GPIO_ACTIVE_LOW>, <&gpioc 2 GPIO_ACTIVE_LOW>;

	l3gd20: l3gd20@0 {
		compatible = "st,l3gd20-gyro";
		spi-max-frequency = <10000000>;
		st,drdy-int-pin = <2>;
		interrupt-parent = <&gpioa>;
		interrupts = <1 IRQ_TYPE_EDGE_RISING>,
				<2 IRQ_TYPE_EDGE_RISING>;
		reg = <0>;
		status = "okay";
	};

	display: display@1{
		/* Connect panel-ilitek-9341 to ltdc */
		compatible = "st,sf-tc240t-9370-t";
		reg = <1>;
		spi-3wire;
		spi-max-frequency = <10000000>;
		dc-gpios = <&gpiod 13 0>;
		port {
			panel_in_rgb: endpoint {
			remote-endpoint = <&ltdc_out_rgb>;
			};
		};
	};
};

&usart1 {
	pinctrl-0 = <&usart1_pins_a>;
	pinctrl-names = "default";
	status = "okay";
};

&usbotg_hs {
	compatible = "st,stm32f4x9-fsotg";
	dr_mode = "host";
	pinctrl-0 = <&usbotg_fs_pins_b>;
	pinctrl-names = "default";
	status = "okay";
};