1// SPDX-License-Identifier: (GPL-2.0+ OR MIT) 2/* 3 * Copyright (C) 2023 PHYTEC Messtechnik GmbH 4 * Author: Jens Lang <j.lang@phytec.de> 5 * 6 * Tauri-L RS232 with RTS/CTS hardware flow control: 7 * - UART4_TX becomes RTS 8 * - UART4_RX becomes CTS 9 */ 10 11#include <dt-bindings/clock/imx8mm-clock.h> 12#include "imx8mm-pinfunc.h" 13 14/dts-v1/; 15/plugin/; 16 17 18&{/} { 19 compatible = "phytec,imx8mm-phygate-tauri-l"; 20 21}; 22 23&uart2 { 24 pinctrl-names = "default"; 25 pinctrl-0 = <&pinctrl_uart2>; 26 assigned-clocks = <&clk IMX8MM_CLK_UART2>; 27 assigned-clock-parents = <&clk IMX8MM_SYS_PLL1_80M>; 28 uart-has-rtscts; 29 status = "okay"; 30}; 31 32&iomuxc { 33 pinctrl_uart2: uart2grp { 34 fsl,pins = < 35 MX8MM_IOMUXC_UART2_RXD_UART2_DCE_RX 0x00 36 MX8MM_IOMUXC_UART2_TXD_UART2_DCE_TX 0x00 37 MX8MM_IOMUXC_UART4_RXD_UART2_DCE_CTS_B 0x00 38 MX8MM_IOMUXC_UART4_TXD_UART2_DCE_RTS_B 0x00 39 >; 40 }; 41}; 42