/*
 * Copyright (c) 2021 Sateesh Kotapati
 *
 * SPDX-License-Identifier: Apache-2.0
 */

#include <arm/armv8-m.dtsi>
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/i2c/i2c.h>
#include <dt-bindings/pinctrl/gecko-pinctrl.h>
#include <dt-bindings/adc/adc.h>
#include <freq.h>

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

	clocks {
		clk_hfxo: clk-hfxo {
			#clock-cells = <0>;
			compatible = "silabs,hfxo";
			clock-frequency = <DT_FREQ_K(38400)>;
			ctune = <120>;
			precision = <50>;
		};
	};

	cpus {
		#address-cells = <1>;
		#size-cells = <0>;
		cpu0: cpu@0 {
			device_type = "cpu";
			compatible = "arm,cortex-m33";
			reg = <0>;
			/*
			 * EM1 is enabled by default because it is
			 * unconditionally safe.
			 *
			 * EM2/3 can be enabled by the board code if proper
			 * timing configuration is ensured:
			 * - for EM2, EM3: BURTC used as sys_clock
			 * - for EM3: BURTC clocked from ULFRCO
			 * Using BURTC as sys_clock instead of SysTick
			 * has implications on system performance. Read
			 * KConfig documentation entry before enabling it.
			 */
			cpu-power-states = <&pstate_em1 &pstate_em2 &pstate_em3>;
		};

		power-states {
			/*
			 * EM1 is a basic "CPU WFI idle", all high-freq clocks remain
			 * enabled.
			 */
			pstate_em1: em1 {
				compatible = "zephyr,power-state";
				power-state-name = "runtime-idle";
				min-residency-us = <4>;
				/* HFXO remains active */
				exit-latency-us = <2>;
			};

			/*
			 * EM2 is a deepsleep with HF clocks disabled by HW, voltages
			 * scaled down, etc.
			 */
			pstate_em2: em2 {
				compatible = "zephyr,power-state";
				power-state-name = "suspend-to-idle";
				min-residency-us = <260>;
				exit-latency-us = <250>;
			};

			/*
			 * EM3 seems to be exactly the same as EM2 except that
			 * LFXO & LFRCO should be disabled, so you must use ULFRCO
			 * as BURTC clock for the system to not lose track of time and
			 * wake up.
			 */
			pstate_em3: em3 {
				compatible = "zephyr,power-state";
				power-state-name = "standby";
				min-residency-us = <20000>;
				exit-latency-us = <2000>;
			};
		};
	};

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

	soc {
		msc: flash-controller@50030000 {
			compatible = "silabs,gecko-flash-controller";
			reg = <0x50030000 0xC69>;
			interrupts = <49 0>;

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

		usart0: usart@5005c000 {
			compatible = "silabs,gecko-spi-usart";
			reg = <0x5005C000 0x400>;
			interrupt-names = "rx", "tx";
			#address-cells = <1>;
			#size-cells = <0>;
			status = "disabled";
		};

		usart1: usart@50060000 {
			compatible = "silabs,gecko-usart";
			reg = <0x50060000 0x400>;
			interrupt-names = "rx", "tx";
			status = "disabled";
		};

		burtc0: burtc@50064000 {
			compatible = "silabs,gecko-burtc";
			reg = <0x50064000 0x3034>;
			status = "disabled";
		};

		stimer0: stimer@58000000 {
			compatible = "silabs,gecko-stimer";
			reg = <0x58000000 0x3054>;
			clock-frequency = <32768>;
			prescaler = <1>;
			status = "disabled";
		};

		trng: trng@4c021000 {
			compatible = "silabs,gecko-trng";
			reg = <0x4C021000 0x1000>;
			status = "disabled";
			interrupts = <0x1 0x0>;
		};

		i2c0: i2c@5a010000 {
			compatible = "silabs,gecko-i2c";
			clock-frequency = <I2C_BITRATE_STANDARD>;
			reg = <0x5a010000 0x3044>;
			#address-cells = <1>;
			#size-cells = <0>;
			status = "disabled";
		};

		i2c1: i2c@50068000 {
			compatible = "silabs,gecko-i2c";
			clock-frequency = <I2C_BITRATE_STANDARD>;
			reg = <0x50068000 0x3044>;
			#address-cells = <1>;
			#size-cells = <0>;
			status = "disabled";
		};

		gpio: gpio@5003c000 {
			compatible = "silabs,gecko-gpio";
			reg = <0x5003C000 0x3660>;
			interrupt-names = "GPIO_EVEN", "GPIO_ODD";

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

			gpioa: gpio@5003c000 {
				compatible = "silabs,gecko-gpio-port";
				reg = <0x5003C000 0x30>;
				gpio-controller;
				#gpio-cells = <2>;
				status = "disabled";
			};

			gpiob: gpio@5003c030 {
				compatible = "silabs,gecko-gpio-port";
				reg = <0x5003C030 0x30>;
				gpio-controller;
				#gpio-cells = <2>;
				status = "disabled";
			};

			gpioc: gpio@5003c060 {
				compatible = "silabs,gecko-gpio-port";
				reg = <0x5003C060 0x30>;
				gpio-controller;
				#gpio-cells = <2>;
				status = "disabled";
			};

			gpiod: gpio@5003c090 {
				compatible = "silabs,gecko-gpio-port";
				reg = <0x5003C090 0x30>;
				gpio-controller;
				#gpio-cells = <2>;
				status = "disabled";
			};

			gpiof: gpio@5003c0c0 {
				compatible = "silabs,gecko-gpio-port";
				reg = <0x5003C0C0 0x30>;
				gpio-controller;
				#gpio-cells = <2>;
				status = "disabled";
			};

		};

		wdog0: wdog@4a018000 {
			compatible = "silabs,gecko-wdog";
			reg = <0x4A018000 0x3028>;
			peripheral-id = <0>;
			interrupts = <43 0>;
			status = "disabled";
		};

		adc0: adc@5a004000 {
			compatible = "silabs,gecko-iadc";
			reg = <0x5a004000 0x4000>;
			interrupts = <48 0>;
			status = "disabled";
			#io-channel-cells = <1>;
		};
	};
};

/ {
	pinctrl: pin-controller {
		/* Pin controller is a "virtual" device since SiLabs SoCs do pin
		 * control in a distributed way (GPIO registers and PSEL
		 * registers on each peripheral).
		 */
		compatible = "silabs,gecko-pinctrl";
	};
};

&nvic {
	arm,num-irq-priority-bits = <4>;
};