/*
 * Copyright (c) 2018 Endre Karlson <endre.karlson@gmail.com>
 * Copyright (c) 2019 Centaur Analytics, Inc
 *
 * SPDX-License-Identifier: Apache-2.0
 */

#include <arm/armv6-m.dtsi>
#include <dt-bindings/clock/stm32l0_clock.h>
#include <dt-bindings/i2c/i2c.h>
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/pwm/pwm.h>
#include <dt-bindings/pwm/stm32_pwm.h>
#include <freq.h>

/ {
	chosen {
		zephyr,flash-controller = &flash;
	};

	cpus {
		#address-cells = <1>;
		#size-cells = <0>;

		cpu0: cpu@0 {
			device_type = "cpu";
			compatible = "arm,cortex-m0+";
			reg = <0>;
		};
	};

	sram0: memory@20000000 {
		compatible = "mmio-sram";
	};

	clocks {
		clk_hse: clk-hse {
			#clock-cells = <0>;
			compatible = "st,stm32-hse-clock";
			status = "disabled";
		};

		clk_hsi: clk-hsi {
			#clock-cells = <0>;
			compatible = "fixed-clock";
			clock-frequency = <DT_FREQ_M(16)>;
			status = "disabled";
		};

		clk_msi: clk-msi {
			#clock-cells = <0>;
			compatible = "st,stm32l0-msi-clock";
			msi-range = <5>; /* 2.1MHz (reset value) */
			status = "disabled";
		};

		clk_lse: clk-lse {
			#clock-cells = <0>;
			compatible = "st,stm32-lse-clock";
			clock-frequency = <32768>;
			driving-capability = <0>;
			status = "disabled";
		};

		clk_lsi: clk-lsi {
			#clock-cells = <0>;
			compatible = "fixed-clock";
			clock-frequency = <DT_FREQ_K(37)>;
			status = "disabled";
		};

		pll: pll {
			#clock-cells = <0>;
			compatible = "st,stm32l0-pll-clock";
			status = "disabled";
		};
	};

	soc {
		rtc: rtc@40002800 {
			compatible = "st,stm32-rtc";
			reg = <0x40002800 0x400>;
			interrupts = <2 0>;
			clocks = <&rcc STM32_CLOCK_BUS_APB1 0x10000000>;
			prescaler = <32768>;
			status = "disabled";
			label = "RTC_0";
		};

		flash: flash-controller@40022000 {
			compatible = "st,stm32-flash-controller", "st,stm32l0-flash-controller";
			label = "FLASH_CTRL";
			reg = <0x40022000 0x400>;
			interrupts = <3 0>;

			#address-cells = <1>;
			#size-cells = <1>;

			flash0: flash@8000000 {
				compatible = "st,stm32-nv-flash", "soc-nv-flash";
				label = "FLASH_STM32";

				write-block-size = <4>;
				/* maximum erase time(ms) for a 128B page */
				max-erase-time = <4>;
			};
		};

		rcc: rcc@40021000 {
			compatible = "st,stm32-rcc";
			#clock-cells = <2>;
			reg = <0x40021000 0x400>;
		};

		exti: interrupt-controller@40010400 {
			compatible = "st,stm32-exti";
			interrupt-controller;
			#interrupt-cells = <1>;
			reg = <0x40010400 0x400>;
		};

		pinctrl: pin-controller@50000000 {
			compatible = "st,stm32-pinctrl";
			#address-cells = <1>;
			#size-cells = <1>;
			reg = <0x50000000 0x2000>;

			gpioa: gpio@50000000 {
				compatible = "st,stm32-gpio";
				gpio-controller;
				#gpio-cells = <2>;
				reg = <0x50000000 0x400>;
				clocks = <&rcc STM32_CLOCK_BUS_IOP 0x00000001>;
				label = "GPIOA";
			};

			gpiob: gpio@50000400 {
				compatible = "st,stm32-gpio";
				gpio-controller;
				#gpio-cells = <2>;
				reg = <0x50000400 0x400>;
				clocks = <&rcc STM32_CLOCK_BUS_IOP 0x00000002>;
				label = "GPIOB";
			};

			gpioc: gpio@50000800 {
				compatible = "st,stm32-gpio";
				gpio-controller;
				#gpio-cells = <2>;
				reg = <0x50000800 0x400>;
				clocks = <&rcc STM32_CLOCK_BUS_IOP 0x00000004>;
				label = "GPIOC";
			};

			gpiod: gpio@50000c00 {
				compatible = "st,stm32-gpio";
				gpio-controller;
				#gpio-cells = <2>;
				reg = <0x50000c00 0x400>;
				clocks = <&rcc STM32_CLOCK_BUS_IOP 0x00000008>;
				label = "GPIOD";
			};

			gpioh: gpio@50001c00 {
				compatible = "st,stm32-gpio";
				gpio-controller;
				#gpio-cells = <2>;
				reg = <0x50001c00 0x400>;
				clocks = <&rcc STM32_CLOCK_BUS_IOP 0x00000080>;
				label = "GPIOH";
			};
		};

		iwdg: watchdog@40003000 {
			compatible = "st,stm32-watchdog";
			reg = <0x40003000 0x400>;
			label = "IWDG";
			status = "disabled";
		};

		wwdg: watchdog@40002c00 {
			compatible = "st,stm32-window-watchdog";
			reg = <0x40002C00 0x400>;
			clocks = <&rcc STM32_CLOCK_BUS_APB1 0x00000800>;
			label = "WWDG";
			interrupts = <0 2>;
			status = "disabled";
		};

		usart2: serial@40004400 {
			compatible = "st,stm32-usart", "st,stm32-uart";
			reg = <0x40004400 0x400>;
			clocks = <&rcc STM32_CLOCK_BUS_APB1 0x00020000>;
			interrupts = <28 0>;
			status = "disabled";
			label = "UART_2";
		};

		lpuart1: serial@40004800 {
			compatible = "st,stm32-lpuart", "st,stm32-uart";
			reg = <0x40004800 0x400>;
			clocks = <&rcc STM32_CLOCK_BUS_APB1 0x00040000>;
			interrupts = <29 0>;
			status = "disabled";
			label = "LPUART_1";
		};

		i2c1: i2c@40005400 {
			compatible = "st,stm32-i2c-v2";
			clock-frequency = <I2C_BITRATE_STANDARD>;
			#address-cells = <1>;
			#size-cells = <0>;
			reg = <0x40005400 0x400>;
			clocks = <&rcc STM32_CLOCK_BUS_APB1 0x00200000>;
			interrupts = <23 0>;
			interrupt-names = "combined";
			status = "disabled";
			label= "I2C_1";
		};

		spi1: spi@40013000 {
			compatible = "st,stm32-spi";
			#address-cells = <1>;
			#size-cells = <0>;
			reg = <0x40013000 0x400>;
			clocks = <&rcc STM32_CLOCK_BUS_APB2 0x00001000>;
			interrupts = <25 3>;
			status = "disabled";
			label = "SPI_1";
		};

		timers2: timers@40000000 {
			compatible = "st,stm32-timers";
			reg = <0x40000000 0x400>;
			clocks = <&rcc STM32_CLOCK_BUS_APB1 0x00000001>;
			interrupts = <15 0>;
			interrupt-names = "global";
			st,prescaler = <0>;
			status = "disabled";
			label = "TIMERS_2";

			pwm {
				compatible = "st,stm32-pwm";
				status = "disabled";
				label = "PWM_2";
				#pwm-cells = <3>;
			};
		};

		timers21: timers@40010800 {
			compatible = "st,stm32-timers";
			reg = <0x40010800 0x400>;
			clocks = <&rcc STM32_CLOCK_BUS_APB2 0x00000004>;
			interrupts = <20 0>;
			interrupt-names = "global";
			st,prescaler = <0>;
			status = "disabled";
			label = "TIMERS_21";

			pwm {
				compatible = "st,stm32-pwm";
				status = "disabled";
				label = "PWM_21";
				#pwm-cells = <3>;
			};
		};

		lptim1: timers@40007c00 {
			compatible = "st,stm32-lptim";
			clocks = <&rcc STM32_CLOCK_BUS_APB1 0x80000000>;
			#address-cells = <1>;
			#size-cells = <0>;
			reg = <0x40007c00 0x400>;
			interrupts = <13 1>;
			interrupt-names = "wakeup";
			status = "disabled";
			label = "LPTIM_1";
		};

		adc1: adc@40012400 {
			compatible = "st,stm32-adc";
			reg = <0x40012400 0x400>;
			clocks = <&rcc STM32_CLOCK_BUS_APB2 0x00000200>;
			interrupts = <12 0>;
			status = "disabled";
			label = "ADC_1";
			#io-channel-cells = <1>;
			has-temp-channel;
			has-vref-channel;
		};

		dma1: dma@40020000 {
			compatible = "st,stm32-dma-v2";
			#dma-cells = <3>;
			reg = <0x40020000 0x400>;
			interrupts = <9 0 10 0 10 0 11 0 11 0 11 0 11 0>;
			clocks = <&rcc STM32_CLOCK_BUS_AHB1 0x1>;
			status = "disabled";
			label = "DMA_1";
		};

		eeprom: eeprom@8080000{
			compatible = "st,stm32-eeprom";
			status = "disabled";
			label = "EEPROM_0";
		};
	};
};

&nvic {
	arm,num-irq-priority-bits = <2>;
};