68 lines
1.3 KiB
Plaintext
68 lines
1.3 KiB
Plaintext
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// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
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/*
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* Copyright (C) 2021 PHYTEC Messtechnik GmbH
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* Author: Jens Lang <j.lang@phytec.de>
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*
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* Tauri-L 2 x RS232:
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* - GPIO3_20 uart4_rs485_en needs to be driven low (inactive)
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*/
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#include <dt-bindings/clock/imx8mm-clock.h>
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#include <dt-bindings/gpio/gpio.h>
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#include "imx8mm-pinfunc.h"
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/dts-v1/;
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/plugin/;
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&gpio3 {
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pinctrl-names = "default";
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pinctrl-0 = <&pinctrl_gpio3_hog>;
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uart4-rs485-en-hog {
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gpio-hog;
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gpios = <20 GPIO_ACTIVE_HIGH>;
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output-low;
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line-name = "uart4_rs485_en";
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};
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};
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/* UART2 - RS232 */
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&uart2 {
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pinctrl-names = "default";
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pinctrl-0 = <&pinctrl_uart2>;
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assigned-clocks = <&clk IMX8MM_CLK_UART2>;
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assigned-clock-parents = <&clk IMX8MM_SYS_PLL1_80M>;
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status = "okay";
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};
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/* UART4 - RS232 */
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&uart4 {
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pinctrl-names = "default";
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pinctrl-0 = <&pinctrl_uart4>;
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assigned-clocks = <&clk IMX8MM_CLK_UART4>;
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assigned-clock-parents = <&clk IMX8MM_SYS_PLL1_80M>;
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status = "okay";
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};
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&iomuxc {
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pinctrl_gpio3_hog: gpio3hoggrp {
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fsl,pins = <
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MX8MM_IOMUXC_SAI5_RXC_GPIO3_IO20 0x49
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>;
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};
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pinctrl_uart2: uart2grp {
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fsl,pins = <
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MX8MM_IOMUXC_UART2_RXD_UART2_DCE_RX 0x00
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MX8MM_IOMUXC_UART2_TXD_UART2_DCE_TX 0x00
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>;
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};
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pinctrl_uart4: uart4grp {
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fsl,pins = <
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MX8MM_IOMUXC_UART4_RXD_UART4_DCE_RX 0x49
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MX8MM_IOMUXC_UART4_TXD_UART4_DCE_TX 0x49
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>;
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};
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};
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