From 2c3c1048746a4622d8c89a29670120dc8fab93c4 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 20:49:45 +0200 Subject: Adding upstream version 6.1.76. Signed-off-by: Daniel Baumann --- .../imx8mm-venice-gw73xx-0x-rs232-rts.dts | 52 ++++++++++++++++++++++ 1 file changed, 52 insertions(+) create mode 100644 arch/arm64/boot/dts/freescale/imx8mm-venice-gw73xx-0x-rs232-rts.dts (limited to 'arch/arm64/boot/dts/freescale/imx8mm-venice-gw73xx-0x-rs232-rts.dts') diff --git a/arch/arm64/boot/dts/freescale/imx8mm-venice-gw73xx-0x-rs232-rts.dts b/arch/arm64/boot/dts/freescale/imx8mm-venice-gw73xx-0x-rs232-rts.dts new file mode 100644 index 000000000..1f8ea20df --- /dev/null +++ b/arch/arm64/boot/dts/freescale/imx8mm-venice-gw73xx-0x-rs232-rts.dts @@ -0,0 +1,52 @@ +// SPDX-License-Identifier: (GPL-2.0+ OR MIT) +/* + * Copyright 2022 Gateworks Corporation + * + * GW73xx RS232 with RTS/CTS hardware flow control: + * - GPIO4_0 rs485_en needs to be driven low (in-active) + * - UART4_TX becomes RTS + * - UART4_RX becomes CTS + */ + +#include + +#include "imx8mm-pinfunc.h" + +/dts-v1/; +/plugin/; + +&{/} { + compatible = "gw,imx8mm-gw73xx-0x"; +}; + +&gpio4 { + rs485_en { + gpio-hog; + gpios = <0 GPIO_ACTIVE_HIGH>; + output-low; + line-name = "rs485_en"; + }; +}; + +&uart2 { + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_uart2>; + rts-gpios = <&gpio5 29 GPIO_ACTIVE_LOW>; + cts-gpios = <&gpio5 28 GPIO_ACTIVE_LOW>; + status = "okay"; +}; + +&uart4 { + status = "disabled"; +}; + +&iomuxc { + pinctrl_uart2: uart2grp { + fsl,pins = < + MX8MM_IOMUXC_UART2_RXD_UART2_DCE_RX 0x140 + MX8MM_IOMUXC_UART2_TXD_UART2_DCE_TX 0x140 + MX8MM_IOMUXC_UART4_TXD_GPIO5_IO29 0x140 + MX8MM_IOMUXC_UART4_RXD_GPIO5_IO28 0x140 + >; + }; +}; -- cgit v1.2.3