[PATCH v2 3/3] arm64: dts: freescale: introduce rve-gateway board

From: Hugo Villeneuve
Date: Wed Nov 01 2023 - 14:36:25 EST

From: Hugo Villeneuve <hvilleneuve@xxxxxxxxxxxx>

The RVE gateway board is based on a Variscite VAR-SOM-NANO,
with a NXP MX8MN nano CPU.

Signed-off-by: Hugo Villeneuve <hvilleneuve@xxxxxxxxxxxx>
---
MAINTAINERS | 7 +
arch/arm64/boot/dts/freescale/Makefile | 1 +
.../boot/dts/freescale/imx8mn-rve-gateway.dts | 284 ++++++++++++++++++
3 files changed, 292 insertions(+)
create mode 100644 arch/arm64/boot/dts/freescale/imx8mn-rve-gateway.dts

diff --git a/MAINTAINERS b/MAINTAINERS
index 43c5ed3c4508..9423b1bf35fc 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -18778,6 +18778,13 @@ F: samples/rust/
F: scripts/*rust*
K: \b(?i:rust)\b

+RVE BOARD SUPPORT
+M: Hugo Villeneuve <hvilleneuve@xxxxxxxxxxxx>
+L: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx (moderated for non-subscribers)
+S: Supported
+W: https://rve.ca
+F: arch/arm64/boot/dts/freescale/imx*rve-*.dts*
+
RXRPC SOCKETS (AF_RXRPC)
M: David Howells <dhowells@xxxxxxxxxx>
M: Marc Dionne <marc.dionne@xxxxxxxxxxxx>
diff --git a/arch/arm64/boot/dts/freescale/Makefile b/arch/arm64/boot/dts/freescale/Makefile
index 89aee6c92576..760a0ca7adc3 100644
--- a/arch/arm64/boot/dts/freescale/Makefile
+++ b/arch/arm64/boot/dts/freescale/Makefile
@@ -89,6 +89,7 @@ dtb-$(CONFIG_ARCH_MXC) += imx8mn-bsh-smm-s2pro.dtb
dtb-$(CONFIG_ARCH_MXC) += imx8mn-evk.dtb
dtb-$(CONFIG_ARCH_MXC) += imx8mn-ddr3l-evk.dtb
dtb-$(CONFIG_ARCH_MXC) += imx8mn-ddr4-evk.dtb
+dtb-$(CONFIG_ARCH_MXC) += imx8mn-rve-gateway.dtb
dtb-$(CONFIG_ARCH_MXC) += imx8mn-tqma8mqnl-mba8mx.dtb
dtb-$(CONFIG_ARCH_MXC) += imx8mn-var-som-symphony.dtb
dtb-$(CONFIG_ARCH_MXC) += imx8mn-venice-gw7902.dtb
diff --git a/arch/arm64/boot/dts/freescale/imx8mn-rve-gateway.dts b/arch/arm64/boot/dts/freescale/imx8mn-rve-gateway.dts
new file mode 100644
index 000000000000..312718982a52
--- /dev/null
+++ b/arch/arm64/boot/dts/freescale/imx8mn-rve-gateway.dts
@@ -0,0 +1,284 @@
+// 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,rve-gateway", "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>;
+ status = "okay";
+
+ 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;
+ };
+
+ rotary: rotary-encoder { /* Bourns PEC12R rotary encoder, 24 steps. */
+ 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";
+
+ eeprom_cb: eeprom@56 { /* Carrier board EEPROM */
+ compatible = "atmel,24c04";
+ reg = <0x56>;
+ pagesize = <16>;
+ vcc-supply = <&reg_3p3v>;
+ };
+
+ lm75: sensor@48 {
+ compatible = "st,stlm75";
+ reg = <0x48>;
+ vs-supply = <&reg_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 {
+ status = "okay";
+ 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 {
+ status = "okay";
+ 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";
+ };
+};
+
+&uart2 {
+ /delete-node/ bluetooth;
+};
+
+&usbotg1 {
+ dr_mode = "host";
+ disable-over-current;
+ status = "okay";
+};
+
+/* SD interface on expansion connector. */
+&usdhc2 {
+ /delete-property/vmmc-supply;
+ 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
+ >;
+ };
+};
--
2.39.2