| // SPDX-License-Identifier: (GPL-2.0+ OR MIT) |
| /* |
| * Copyright (C) 2023 PHYTEC Messtechnik GmbH |
| * Author: Jens Lang <j.lang@phytec.de> |
| * |
| * Tauri-L RS232 with RTS/CTS hardware flow control: |
| * - UART4_TX becomes RTS |
| * - UART4_RX becomes CTS |
| */ |
| |
| #include <dt-bindings/clock/imx8mm-clock.h> |
| #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 |
| >; |
| }; |
| }; |
