#include / { cpus { #address-cells = <1>; #size-cells = <0>; cpu@0 { compatible = "arm,cortex-m4f"; reg = <0>; }; }; flash0: flash@0 { compatible = "soc-nv-flash"; label = "FLASH_0"; }; sram0: memory@20000000 { device_type = "memory"; compatible = "mmio-sram"; }; soc { uart0: uart@4000c000 { /* USART0 */ compatible = "silabs,efm32-usart"; reg = <0x4000c000 0x400>; interrupts = <3 0 4 0>; status = "disabled"; label = "UART_0"; }; uart1: uart@4000c400 { /* USART1 */ compatible = "silabs,efm32-usart"; reg = <0x4000c400 0x400>; interrupts = <15 0 16 0>; status = "disabled"; label = "UART_1"; }; uart2: uart@4000c800 { /* USART2 */ compatible = "silabs,efm32-usart"; reg = <0x4000c800 0x400>; interrupts = <18 0 19 0>; status = "disabled"; label = "UART_2"; }; uart3: uart@4000e000 { /* UART0 */ compatible = "silabs,efm32-uart"; reg = <0x4000e000 0x400>; interrupts = <20 0 21 0>; status = "disabled"; label = "UART_3"; }; uart4: uart@4000e400 { /* UART1 */ compatible = "silabs,efm32-uart"; reg = <0x4000e400 0x400>; interrupts = <22 0 23 0>; status = "disabled"; label = "UART_4"; }; }; }; &nvic { arm,num-irq-priority-bits = <3>; };