// SPDX-License-Identifier: (GPL-2.0+ OR MIT) /* * Copyright (C) 2023 PHYTEC Messtechnik GmbH * Author: Jens Lang * * Tauri-L RS232 with RTS/CTS hardware flow control: * - UART4_TX becomes RTS * - UART4_RX becomes CTS */ #include #include "imx8mm-pinfunc.h" /dts-v1/; /plugin/; &uart2 { pinctrl-names = "default"; pinctrl-0 = <&pinctrl_uart2>; assigned-clocks = <&clk IMX8MM_CLK_UART2>; assigned-clock-parents = <&clk IMX8MM_SYS_PLL1_80M>; uart-has-rtscts; status = "okay"; }; &iomuxc { pinctrl_uart2: uart2grp { fsl,pins = < MX8MM_IOMUXC_UART2_RXD_UART2_DCE_RX 0x00 MX8MM_IOMUXC_UART2_TXD_UART2_DCE_TX 0x00 MX8MM_IOMUXC_UART4_RXD_UART2_DCE_CTS_B 0x00 MX8MM_IOMUXC_UART4_TXD_UART2_DCE_RTS_B 0x00 >; }; };