|  | /* | 
|  | * Copyright (c) 2018 Endre Karlson <endre.karlson@gmail.com> | 
|  | * | 
|  | * SPDX-License-Identifier: Apache-2.0 | 
|  | */ | 
|  |  | 
|  | /dts-v1/; | 
|  | #include <st/l0/stm32l072Xz.dtsi> | 
|  | #include <st/l0/stm32l072c(b-z)tx-pinctrl.dtsi> | 
|  |  | 
|  | / { | 
|  | model = "Dragino LSN50 LoRA Sensor Node"; | 
|  | compatible = "vendor,dragino"; | 
|  |  | 
|  | chosen { | 
|  | zephyr,console = &usart1; | 
|  | zephyr,shell-uart = &usart1; | 
|  | zephyr,sram = &sram0; | 
|  | zephyr,flash = &flash0; | 
|  | }; | 
|  | }; | 
|  |  | 
|  | &clk_hsi { | 
|  | status = "okay"; | 
|  | }; | 
|  |  | 
|  | &pll { | 
|  | div = <2>; | 
|  | mul = <4>; | 
|  | clocks = <&clk_hsi>; | 
|  | status = "okay"; | 
|  | }; | 
|  |  | 
|  | &rcc { | 
|  | clocks = <&pll>; | 
|  | clock-frequency = <DT_FREQ_M(32)>; | 
|  | ahb-prescaler = <1>; | 
|  | apb1-prescaler = <1>; | 
|  | apb2-prescaler = <1>; | 
|  | }; | 
|  |  | 
|  | &usart1 { | 
|  | pinctrl-0 = <&usart1_tx_pb6 &usart1_rx_pb7>; | 
|  | pinctrl-names = "default"; | 
|  | current-speed = <115200>; | 
|  | status = "okay"; | 
|  | }; | 
|  |  | 
|  | &usart2 { | 
|  | pinctrl-0 = <&usart2_tx_pa2 &usart2_rx_pa3>; | 
|  | pinctrl-names = "default"; | 
|  | current-speed = <115200>; | 
|  | status = "okay"; | 
|  | }; |