/*
 * Copyright (c) 2019 Philippe Retornaz <philippe@shapescale.com>
 * Copyright (c) 2019 ST Microelectronics
 * Copyright (c) 2019 Centaur Analytics, Inc
 * Copyright (C) 2020 Framework Computer LLC <ktl@frame.work>
 * Copyright (c) 2021 G-Technologies Sdn. Bhd.
 *
 * SPDX-License-Identifier: Apache-2.0
 */

#include <arm/armv6-m.dtsi>
#include <zephyr/dt-bindings/clock/stm32g0_clock.h>
#include <zephyr/dt-bindings/gpio/gpio.h>
#include <zephyr/dt-bindings/i2c/i2c.h>
#include <zephyr/dt-bindings/pwm/pwm.h>
#include <zephyr/dt-bindings/dma/stm32_dma.h>
#include <zephyr/dt-bindings/adc/adc.h>
#include <zephyr/dt-bindings/adc/stm32l4_adc.h>
#include <zephyr/dt-bindings/pwm/stm32_pwm.h>
#include <zephyr/dt-bindings/reset/stm32g0_reset.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 = "st,stm32g0-hsi-clock";
			hsi-div = <1>;
			clock-frequency = <DT_FREQ_M(16)>;
			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(32)>;
			status = "disabled";
		};

		pll: pll {
			#clock-cells = <0>;
			compatible = "st,stm32g0-pll-clock";
			status = "disabled";
		};
	};

	power-states {
		stop0: state0 {
			compatible = "zephyr,power-state";
			power-state-name = "suspend-to-idle";
			substate-id = <1>;
			min-residency-us = <20>;
		};
		stop1: state1 {
			compatible = "zephyr,power-state";
			power-state-name = "suspend-to-idle";
			substate-id = <2>;
			min-residency-us = <100>;
		};
	};

	soc {
		flash: flash-controller@40022000 {
			compatible = "st,stm32-flash-controller", "st,stm32g0-flash-controller";
			reg = <0x40022000 0x400>;
			interrupts = <3 0>;
			clocks = <&rcc STM32_CLOCK_BUS_AHB1 0x00000100>;

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

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

				write-block-size = <8>;
				erase-block-size = <2048>;
				/* maximum erase time(ms) for a 2K sector */
				max-erase-time = <40>;
			};
		};

		rcc: rcc@40021000 {
			compatible = "st,stm32f0-rcc";
			#clock-cells = <2>;
			reg = <0x40021000 0x400>;

			rctl: reset-controller {
				compatible = "st,stm32-rcc-rctl";
				#reset-cells = <1>;
			};
		};

		exti: interrupt-controller@40021800 {
			compatible = "st,stm32g0-exti", "st,stm32-exti";
			interrupt-controller;
			#interrupt-cells = <1>;
			#address-cells = <1>;
			reg = <0x40021800 0x400>;
			num-lines = <16>;
			interrupts = <5 0>, <6 0>, <7 0>;
			interrupt-names = "line0-1", "line2-3", "line4-15";
			line-ranges = <0 2>, <2 2>, <4 12>;
		};

		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>;
			};

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

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

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

			gpiof: gpio@50001400 {
				compatible = "st,stm32-gpio";
				gpio-controller;
				#gpio-cells = <2>;
				reg = <0x50001400 0x400>;
				clocks = <&rcc STM32_CLOCK_BUS_IOP 0x00000020>;
			};
		};

		rtc: rtc@40002800 {
			compatible = "st,stm32-rtc";
			reg = <0x40002800 0x400>;
			interrupts = <2 0>;
			clocks = <&rcc STM32_CLOCK_BUS_APB1 0x00000400>;
			prescaler = <32768>;
			status = "disabled";
		};

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

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

		usart1: serial@40013800 {
			compatible = "st,stm32-usart", "st,stm32-uart";
			reg = <0x40013800 0x400>;
			clocks = <&rcc STM32_CLOCK_BUS_APB1_2 0x00004000>;
			resets = <&rctl STM32_RESET(APB1H, 14U)>;
			interrupts = <27 0>;
			status = "disabled";
		};

		usart2: serial@40004400 {
			compatible = "st,stm32-usart", "st,stm32-uart";
			reg = <0x40004400 0x400>;
			clocks = <&rcc STM32_CLOCK_BUS_APB1 0x00020000>;
			resets = <&rctl STM32_RESET(APB1L, 17U)>;
			interrupts = <28 0>;
			status = "disabled";
		};

		lptim1: timers@40007c00 {
			compatible = "st,stm32-lptim";
			clocks = <&rcc STM32_CLOCK_BUS_APB1 0x80000000>;
			#address-cells = <1>;
			#size-cells = <0>;
			reg = <0x40007c00 0x400>;
			interrupts = <17 1>;
			interrupt-names = "wakeup";
			status = "disabled";
		};

		timers1: timers@40012c00 {
			compatible = "st,stm32-timers";
			reg = <0x40012C00 0x400>;
			clocks = <&rcc STM32_CLOCK_BUS_APB1_2 0x00000800>;
			resets = <&rctl STM32_RESET(APB1H, 11U)>;
			interrupts = <13 0>, <14 0>;
			interrupt-names = "brk_up_trg_com", "cc";
			st,prescaler = <0>;
			status = "disabled";

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

			counter {
				compatible = "st,stm32-counter";
				status = "disabled";
			};
		};

		timers3: timers@40000400 {
			compatible = "st,stm32-timers";
			reg = <0x40000400 0x400>;
			clocks = <&rcc STM32_CLOCK_BUS_APB1 0x00000002>;
			resets = <&rctl STM32_RESET(APB1L, 1U)>;
			interrupts = <16 0>;
			interrupt-names = "global";
			st,prescaler = <0>;
			status = "disabled";

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

			counter {
				compatible = "st,stm32-counter";
				status = "disabled";
			};
		};

		timers14: timers@40002000 {
			compatible = "st,stm32-timers";
			reg = <0x40002000 0x400>;
			clocks = <&rcc STM32_CLOCK_BUS_APB1_2 0x00008000>;
			resets = <&rctl STM32_RESET(APB1H, 15U)>;
			interrupts = <19 0>;
			interrupt-names = "global";
			st,prescaler = <0>;
			status = "disabled";

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

			counter {
				compatible = "st,stm32-counter";
				status = "disabled";
			};
		};

		timers16: timers@40014400 {
			compatible = "st,stm32-timers";
			reg = <0x40014400 0x400>;
			clocks = <&rcc STM32_CLOCK_BUS_APB1_2 0x00020000>;
			resets = <&rctl STM32_RESET(APB1H, 17U)>;
			interrupts = <21 0>;
			interrupt-names = "global";
			st,prescaler = <0>;
			status = "disabled";

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

			counter {
				compatible = "st,stm32-counter";
				status = "disabled";
			};
		};

		timers17: timers@40014800 {
			compatible = "st,stm32-timers";
			reg = <0x40014800 0x400>;
			clocks = <&rcc STM32_CLOCK_BUS_APB1_2 0x00040000>;
			resets = <&rctl STM32_RESET(APB1H, 18U)>;
			interrupts = <22 0>;
			interrupt-names = "global";
			st,prescaler = <0>;
			status = "disabled";

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

			counter {
				compatible = "st,stm32-counter";
				status = "disabled";
			};
		};

		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";
		};

		i2c2: i2c@40005800 {
			compatible = "st,stm32-i2c-v2";
			clock-frequency = <I2C_BITRATE_STANDARD>;
			#address-cells = <1>;
			#size-cells = <0>;
			reg = <0x40005800 0x400>;
			clocks = <&rcc STM32_CLOCK_BUS_APB1 0x00400000>;
			interrupts = <24 0>;
			interrupt-names = "combined";
			status = "disabled";
		};

		spi1: spi@40013000 {
			compatible = "st,stm32-spi-fifo", "st,stm32-spi";
			#address-cells = <1>;
			#size-cells = <0>;
			reg = <0x40013000 0x400>;
			clocks = <&rcc STM32_CLOCK_BUS_APB1_2 0x00001000>;
			interrupts = <25 0>;
			status = "disabled";
		};

		spi2: spi@40003800 {
			compatible = "st,stm32-spi-fifo", "st,stm32-spi";
			#address-cells = <1>;
			#size-cells = <0>;
			reg = <0x40003800 0x400>;
			clocks = <&rcc STM32_CLOCK_BUS_APB1 0x00004000>;
			interrupts = <26 0>;
			status = "disabled";
		};

		adc1: adc@40012400 {
			compatible = "st,stm32-adc";
			reg = <0x40012400 0x400>;
			clocks = <&rcc STM32_CLOCK_BUS_APB1_2 0x00100000>;
			interrupts = <12 0>;
			status = "disabled";
			#io-channel-cells = <1>;
			temp-channel = <12>;
			vref-channel = <13>;
			vbat-channel = <14>;
			resolutions = <STM32_ADC_RES(12, 0x00)
				       STM32_ADC_RES(10, 0x01)
				       STM32_ADC_RES(8, 0x02)
				       STM32_ADC_RES(6, 0x03)>;
			/* Errata ES0418: For sampling time set to 1.5 or 3.5
			 * cycles, the sampling in a single ADC conversion or in
			 * the first conversion of a sequence takes one extra
			 * cycle.
			 * So instead of 2 4, we set 3 5.
			 */
			sampling-times = <3 5 8 13 20 40 80 161>;
			num-sampling-time-common-channels = <2>;
		};

		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>;
			clocks = <&rcc STM32_CLOCK_BUS_AHB1 0x1>;
			dma-requests = <5>;
			dma-offset = <0>;
			status = "disabled";
		};

		/* DMAMUX clock is enabled as long as DMA1 or DMA2 is enabled */
		dmamux1: dmamux@40020800 {
			compatible = "st,stm32-dmamux";
			#dma-cells = <3>;
			reg = <0x40020800 0x800>;
			interrupts = <11 0>;
			dma-channels = <5>;
			dma-generators = <4>;
			dma-requests= <49>;
			status = "disabled";
		};
	};

	die_temp: dietemp {
		compatible = "st,stm32-temp-cal";
		ts-cal1-addr = <0x1FFF75A8>;
		ts-cal2-addr = <0x1FFF75CA>;
		ts-cal1-temp = <30>;
		ts-cal2-temp = <130>;
		ts-cal-vrefanalog = <3000>;
		io-channels = <&adc1 12>;
		status = "disabled";
	};

	vref: vref {
		compatible = "st,stm32-vref";
		vrefint-cal-addr = <0x1FFF75AA>;
		vrefint-cal-mv = <3000>;
		io-channels = <&adc1 13>;
		status = "disabled";
	};

	vbat: vbat {
		compatible = "st,stm32-vbat";
		ratio = <3>;
		io-channels = <&adc1 14>;
		status = "disabled";
	};
};

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