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 };
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