// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
/*
* Copyright 2023 DimOnOff
*/
/dts-v1/;
#include <dt-bindings/usb/pd.h>
#include "imx8mn-var-som.dtsi"
/ {
model = "RVE gateway";
compatible = "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_ENTER>;
};
key-exit {
label = "exit";
gpios = <&gpio3 23 GPIO_ACTIVE_LOW>;
linux,code = <KEY_ESC>;
};
};
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
>;
};
};
Codebase Browser
linux