zephyr/boards/ronoth/ronoth_lodev/ronoth_lodev.dts

/*
 * Copyright (c)  2020/2021 Dean Weiten <dmw@weiten.com>
 *
 * SPDX-License-Identifier: Apache-2.0
 */

/*
 * Note: SPI2 and several GPIOs are not available in the S76S - these are connected
 * to the in-package Semtech SX1276 LoRa transceiver.  See the documentation for details.
 */

/dts-v1/;
#include <acsip/s76s.dtsi>
#include <zephyr/dt-bindings/input/input-event-codes.h>

/ {
	model = "Ronoth LoDev";
	compatible = "ronoth,lodev";

	chosen {
		zephyr,console = &usart1;
		zephyr,shell-uart = &usart1;
		zephyr,sram = &sram0;
		zephyr,flash = &flash0;
	};

	/*
	 * On Ronoth LoDev and perhaps other boards,
	 * Red LED on PA5.
	 */
	leds {
		compatible = "gpio-leds";
		red_led_0: led_0 {
			gpios = <&gpioa 5 GPIO_ACTIVE_HIGH>;
			label = "User LD2";
		};
	};

	/* Arbitrarily use PC9 as a button input. */
	gpio_keys {
		compatible = "gpio-keys";
		user_button: button {
			label = "User";
			gpios = <&gpioc 9 GPIO_ACTIVE_LOW>;
			zephyr,code = <INPUT_KEY_0>;
		};
	};

	cn6_header: lodev_connector_1 {
		compatible = "lodev_cn6";
		#gpio-cells = <2>;
		gpio-map-mask = <0xffffffff 0xffffffc0>;
		gpio-map-pass-thru = <0 0x3f>;
		gpio-map =	/*	<0 0 -      - 0>,		 3.3V */
		/*	<1 0 -      - 0>,		 GND */
			<2 0 &gpioc 1 0>,		/* PC1 */
			<3 0 &gpioc 0 0>,		/* PC0 */
			<4 0 &gpiob 8 0>,		/* PB8 */
		/*	<5 0 -      - 0>,		 BOOT0 */
			<6 0 &gpiob 7 0>,		/* PB7 */
			<7 0 &gpiob 6 0>,		/* PB6 */
			<8 0 &gpiob 5 0>,		/* PB5 */
			<9 0 &gpiod 2 0>,		/* PD2 */
			<10 0 &gpioc 12 0>,		/* PC12 */
			<11 0 &gpioc 11 0>,		/* PC11 */
			<12 0 &gpioc 10 0>,		/* PC10 */
			<13 0 &gpioa 14 0>,		/* PA14 / SWCLK */
			<14 0 &gpioa 13 0>,		/* PA13 / SWDIO */
			<15 0 &gpioa 12 0>,		/* PA12 */
			<16 0 &gpioa 11 0>,		/* PA11 */
			<17 0 &gpioa 9 0>,		/* PA9 (UART1 Rx connected to USB) */
			<18 0 &gpioa 10 0>,		/* PA10 (UART1 Tx connected to USB) */
			<19 0 &gpioa 8 0>;		/* PA8 */
	};

	cn7_header: lodev_connector_2 {
		compatible = "lodev_cn7";
		#gpio-cells = <2>;
		gpio-map-mask = <0xffffffff 0xffffffc0>;
		gpio-map-pass-thru = <0 0x3f>;
		gpio-map =		<0 0 &gpioc 2 0>,		/* PC2 */
			<1 0 &gpioc 3 0>,		/* PC3 */
		/*	<2 0 -      - 0>,		 nRESET */
			<3 0 &gpioa 0 0>,		/* PA0 */
			<4 0 &gpioa 2 0>,		/* PA2 */
			<4 0 &gpioa 3 0>,		/* PA3 */
			<6 0 &gpioa 4 0>,		/* PA4 */
			<7 0 &gpioa 5 0>,		/* PA5 - connected to red LED1 */
			<8 0 &gpioa 6 0>,		/* PA6 */
			<9 0 &gpioa 7 0>,		/* PA7 */
			<10 0 &gpioc 4 0>,		/* PC4 */
			<11 0 &gpioc 5 0>,		/* PC5 */
			<12 0 &gpiob 0 0>,		/* PB0 */
			<13 0 &gpiob 1 0>,		/* PB1 */
			<14 0 &gpioc 6 0>,		/* PC6 */
			<15 0 &gpioc 7 0>,		/* PC7 */
			<16 0 &gpioc 8 0>,		/* PC8 */
			<17 0 &gpioc 9 0>,		/* PC9 */
		/*	<18 0 -      - 0>,		 GND */
			<19 0 &gpioa 1 0>;		/* PA1 (also used in S76S as "RF FEM CPS" */
	};

	aliases {
		led0 = &red_led_0;
		sw0 = &user_button;
		eeprom-0 = &eeprom;
		lora0 = &lora;
		watchdog0 = &iwdg;
	};
};

&clk_lsi {
	status = "okay";
};

&clk_hsi48 {
	status = "okay";
};

&clk_hsi {
	status = "okay";
};

&rcc {
	clocks = <&clk_hsi>;
	clock-frequency = <DT_FREQ_M(16)>;
	ahb-prescaler = <1>;
	apb1-prescaler = <1>;
	apb2-prescaler = <1>;
};

&usart1 {
	pinctrl-0 = <&usart1_tx_pa9 &usart1_rx_pa10>;
	pinctrl-names = "default";
	current-speed = <115200>;
	status = "okay";
};

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

&i2c1 {
	pinctrl-0 = <&i2c1_scl_pb6 &i2c1_sda_pb7>;
	pinctrl-names = "default";
	clock-frequency = <I2C_BITRATE_FAST>;
	status = "okay";
};

&spi1 {
	pinctrl-0 = <&spi1_nss_pa4 &spi1_sck_pa5 &spi1_miso_pa6 &spi1_mosi_pa7>;
	pinctrl-names = "default";
	status = "okay";
};

&iwdg {
	status = "okay";
};

&adc1 {
	pinctrl-0 = <&adc_in0_pa0>;
	pinctrl-names = "default";
	st,adc-clock-source = <SYNC>;
	st,adc-prescaler = <4>;
	status = "okay";
};

&dac1 {
	status = "okay";
	pinctrl-0 = <&dac_out1_pa4>;
	pinctrl-names = "default";
};

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

&rng {
	clocks = <&rcc STM32_CLOCK_BUS_AHB1 0x00100000>,
		 <&rcc STM32_SRC_HSI48 HSI48_SEL(1)>;
	status = "okay";
};

&eeprom {
	status = "okay";
};