// SPDX-License-Identifier: (GPL-2.0+ OR MIT) /* * Copyright 2023 DimOnOff */ /dts-v1/; #include #include "imx8mn-var-som.dtsi" / { model = "RVE gateway"; compatible = "rve,rve-gateway", "variscite,var-som-mx8mn", "fsl,imx8mn"; crystal_duart_24m: crystal-duart-24m { compatible = "fixed-clock"; #clock-cells = <0>; clock-frequency = <24000000>; }; gpio-keys { compatible = "gpio-keys"; pinctrl-names = "default"; pinctrl-0 = <&pinctrl_gpio_keys>; key-enter { label = "enter"; gpios = <&gpio1 1 GPIO_ACTIVE_LOW>; linux,code = ; }; key-exit { label = "exit"; gpios = <&gpio3 23 GPIO_ACTIVE_LOW>; linux,code = ; }; }; lcd { compatible = "hit,hd44780"; display-height-chars = <2>; display-width-chars = <20>; pinctrl-names = "default"; pinctrl-0 = <&pinctrl_lcd>; data-gpios = <&gpio5 1 GPIO_ACTIVE_HIGH>, <&gpio1 6 GPIO_ACTIVE_HIGH>, <&gpio1 14 GPIO_ACTIVE_HIGH>, <&gpio4 28 GPIO_ACTIVE_HIGH>, <&gpio5 24 GPIO_ACTIVE_HIGH>, <&gpio5 2 GPIO_ACTIVE_HIGH>, <&gpio1 12 GPIO_ACTIVE_HIGH>, <&gpio5 25 GPIO_ACTIVE_HIGH>; enable-gpios = <&gpio5 23 GPIO_ACTIVE_HIGH>; rs-gpios = <&gpio1 7 GPIO_ACTIVE_HIGH>; rw-gpios = <&gpio4 27 GPIO_ACTIVE_HIGH>; }; reg_3p3v: regulator-3p3v { compatible = "regulator-fixed"; regulator-name = "3P3V"; regulator-min-microvolt = <3300000>; regulator-max-microvolt = <3300000>; regulator-always-on; }; /* Bourns PEC12R rotary encoder, 24 steps. */ rotary: rotary-encoder { compatible = "rotary-encoder"; pinctrl-names = "default"; pinctrl-0 = <&pinctrl_rotary>; gpios = <&gpio1 5 GPIO_ACTIVE_LOW>, /* A */ <&gpio3 21 GPIO_ACTIVE_LOW>; /* B */ linux,axis = <0>; /* REL_X */ rotary-encoder,encoding = "gray"; rotary-encoder,relative-axis; }; }; &ecspi1 { cs-gpios = <&gpio5 9 GPIO_ACTIVE_LOW>; duart1: serial@0 { compatible = "nxp,sc16is752"; reg = <0>; spi-rx-bus-width = <1>; spi-tx-bus-width = <1>; spi-max-frequency = <4000000>; clocks = <&crystal_duart_24m>; interrupt-parent = <&gpio3>; interrupts = <22 IRQ_TYPE_EDGE_FALLING>; gpio-controller; #gpio-cells = <2>; gpio-line-names = "RADIO0", "RADIO1", "RADIO2", "RADIO3", "RADIO4", "RADIO_RESET", "TP12", "TP11"; linux,rs485-enabled-at-boot-time; rs485-rts-active-low; }; /delete-node/ touchscreen@0; }; &ecspi2 { pinctrl-names = "default"; pinctrl-0 = <&pinctrl_ecspi2>; cs-gpios = <&gpio5 13 GPIO_ACTIVE_LOW>; /delete-property/ dmas; /delete-property/ dma-names; status = "okay"; duart2: serial@0 { compatible = "nxp,sc16is752"; reg = <0>; spi-rx-bus-width = <1>; spi-tx-bus-width = <1>; spi-max-frequency = <4000000>; clocks = <&crystal_duart_24m>; interrupt-parent = <&gpio3>; interrupts = <20 IRQ_TYPE_EDGE_FALLING>; gpio-controller; #gpio-cells = <2>; gpio-line-names = "LED_B_USER", "LED_R_USER", "LED_G_USER", "GPIO_EXT3", "GPIO_EXT2", "GPIO_EXT1", "GPIO_EXT0", "TP13"; linux,rs485-enabled-at-boot-time; rs485-rts-active-low; }; }; /* Configure PWM pins in GPIO mode: */ &gpio5 { gpio-line-names = "", "", "", "PWM3", "PWM2", "PWM1"; }; &gpu { status = "disabled"; }; &i2c2 { clock-frequency = <400000>; pinctrl-names = "default"; pinctrl-0 = <&pinctrl_i2c2>; status = "okay"; /* Carrier board EEPROM */ eeprom_cb: eeprom@56 { compatible = "atmel,24c04"; reg = <0x56>; pagesize = <16>; vcc-supply = <®_3p3v>; }; lm75: sensor@48 { compatible = "st,stlm75"; reg = <0x48>; vs-supply = <®_3p3v>; }; mcp7940: rtc@6f { compatible = "microchip,mcp7940x"; reg = <0x6f>; }; }; &i2c3 { codec@1a { status = "disabled"; }; }; &i2c4 { clock-frequency = <400000>; pinctrl-names = "default"; pinctrl-0 = <&pinctrl_i2c4>; status = "okay"; pcf8574_1: gpio@38 { compatible = "nxp,pcf8574"; reg = <0x38>; gpio-controller; #gpio-cells = <2>; gpio-line-names = "LED_B_COMM3", "LED_R_COMM3", "LED_G_COMM3", "TP14", "TP15", "LED_G_COMM4", "LED_R_COMM4", "LED_B_COMM4"; }; pcf8574_2: gpio@39 { compatible = "nxp,pcf8574"; reg = <0x39>; gpio-controller; #gpio-cells = <2>; gpio-line-names = "LED_B_COMM2", "LED_G_COMM2", "LED_B_COMM1", "LED_R_COMM2", "LED_R_COMM1", "LED_G_COMM1", "TP16", "TP17"; }; }; /* Bluetooth */ &uart2 { status = "disabled"; }; &usbotg1 { dr_mode = "host"; disable-over-current; status = "okay"; }; /* SD interface on expansion connector. */ &usdhc2 { vmmc-supply = <®_3p3v>; cd-gpios = <&gpio1 13 GPIO_ACTIVE_LOW>; }; &iomuxc { pinctrl_ecspi1: ecspi1grp { fsl,pins = < MX8MN_IOMUXC_ECSPI1_SCLK_ECSPI1_SCLK 0x13 MX8MN_IOMUXC_ECSPI1_MOSI_ECSPI1_MOSI 0x13 MX8MN_IOMUXC_ECSPI1_MISO_ECSPI1_MISO 0x13 MX8MN_IOMUXC_ECSPI1_SS0_GPIO5_IO9 0x13 /* SS0 */ MX8MN_IOMUXC_SAI5_RXD1_GPIO3_IO22 0x13 /* SC16 IRQ */ >; }; pinctrl_ecspi2: ecspi2grp { fsl,pins = < MX8MN_IOMUXC_ECSPI2_SCLK_ECSPI2_SCLK 0x13 MX8MN_IOMUXC_ECSPI2_MOSI_ECSPI2_MOSI 0x13 MX8MN_IOMUXC_ECSPI2_MISO_ECSPI2_MISO 0x13 MX8MN_IOMUXC_ECSPI2_SS0_GPIO5_IO13 0x13 /* SS0 */ MX8MN_IOMUXC_SAI5_RXC_GPIO3_IO20 0x13 /* SC16 IRQ */ >; }; pinctrl_gpio_keys: gpiokeysgrp { fsl,pins = < MX8MN_IOMUXC_GPIO1_IO01_GPIO1_IO1 0xc6 /* Enter */ MX8MN_IOMUXC_SAI5_RXD2_GPIO3_IO23 0xc6 /* Exit */ >; }; pinctrl_i2c2: i2c2grp { fsl,pins = < MX8MN_IOMUXC_I2C2_SCL_I2C2_SCL 0x400001c3 MX8MN_IOMUXC_I2C2_SDA_I2C2_SDA 0x400001c3 >; }; pinctrl_i2c4: i2c4grp { fsl,pins = < MX8MN_IOMUXC_I2C4_SCL_I2C4_SCL 0x400001c3 MX8MN_IOMUXC_I2C4_SDA_I2C4_SDA 0x400001c3 >; }; pinctrl_lcd: lcdgrp { fsl,pins = < MX8MN_IOMUXC_SAI3_TXD_GPIO5_IO1 0x00000156 /* D0 */ MX8MN_IOMUXC_GPIO1_IO06_GPIO1_IO6 0x00000156 /* D1 */ MX8MN_IOMUXC_GPIO1_IO14_GPIO1_IO14 0x00000156 /* D2 */ MX8MN_IOMUXC_SAI3_RXFS_GPIO4_IO28 0x00000156 /* D3 */ MX8MN_IOMUXC_UART2_RXD_GPIO5_IO24 0x00000156 /* D4 */ MX8MN_IOMUXC_SAI3_MCLK_GPIO5_IO2 0x00000156 /* D5 */ MX8MN_IOMUXC_GPIO1_IO12_GPIO1_IO12 0x00000156 /* D6 */ MX8MN_IOMUXC_UART2_TXD_GPIO5_IO25 0x00000156 /* D7 */ MX8MN_IOMUXC_UART1_TXD_GPIO5_IO23 0x00000156 /* E */ MX8MN_IOMUXC_GPIO1_IO07_GPIO1_IO7 0x00000156 /* RS */ MX8MN_IOMUXC_SAI2_MCLK_GPIO4_IO27 0x00000156 /* R/W */ >; }; pinctrl_rotary: rotarygrp { fsl,pins = < MX8MN_IOMUXC_GPIO1_IO05_GPIO1_IO5 0x00000156 /* A */ MX8MN_IOMUXC_SAI5_RXD0_GPIO3_IO21 0x00000156 /* B */ >; }; /* Override Card Detect function GPIO value (GPIO1_IO10) from SOM: */ pinctrl_usdhc2_gpio: usdhc2gpiogrp { fsl,pins = < MX8MN_IOMUXC_GPIO1_IO13_GPIO1_IO13 0x41 >; }; };