zephyr/dts/arm/silabs/efr32fg1p.dtsi

#include <arm/armv7-m.dtsi>

/ {
	cpus {
		cpu@0 {
			compatible = "arm,cortex-m4f";
			reg = <0>;
		};
	};

	flash0: flash {
		compatible = "soc-nv-flash";
		label = "FLASH_0";
	};

	soc {
		uart0: uart@40010000 { /* USART0 */
			compatible = "silabs,efm32-usart";
			reg = <0x40010000 0x400>;
			interrupts = <11 0 12 0>;
			status = "disabled";
			label = "UART_0";
		};

		uart1: uart@40010400 { /* USART1 */
			compatible = "silabs,efm32-usart";
			reg = <0x40010400 0x400>;
			interrupts = <19 0 20 0>;
			status = "disabled";
			label = "UART_1";
		};
	};
};

&nvic {
	arm,num-irq-priority-bits = <3>;
};