[PATCH 5/5] arm64: dts: Add device tree source for the Au-Zone Maivin Starter Kit

Laurent Pinchart
2024-03-25T20:33:34Z

The Maivin board is an AI vision starter kit sold by Au-Zone
Technologies, developed in collaboration with Toradex and Vision
Components. It is based on a Toradex Verdin i.MX8MP SoM.

Add a device tree that covers the base set the peripherals found on the
board:

- Ethernet
- USB
- SD card slot
- CAN and serial ports (RS232 and RS485)
- DACs, EEPROMs, temperature sensor
- PCI M.2 and CSI regulators

An additional pinctrl group is included for the M.2 modem, but hasn't
been tested due to lack of compatible hardware.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
---
arch/arm64/boot/dts/freescale/Makefile | 1 +
.../boot/dts/freescale/imx8mp-maivin.dts | 236 ++++++++++++++++++
2 files changed, 237 insertions(+)
create mode 100644 arch/arm64/boot/dts/freescale/imx8mp-maivin.dts

diff --git a/arch/arm64/boot/dts/freescale/Makefile b/arch/arm64/boot/dts/freescale/Makefile
index 045250d0a040..03af8c242649 100644
--- a/arch/arm64/boot/dts/freescale/Makefile
+++ b/arch/arm64/boot/dts/freescale/Makefile
@@ -165,6 +165,7 @@ dtb-$(CONFIG_ARCH_MXC) += imx8mp-dhcom-pdk2.dtb
dtb-$(CONFIG_ARCH_MXC) += imx8mp-dhcom-pdk3.dtb
dtb-$(CONFIG_ARCH_MXC) += imx8mp-evk.dtb
dtb-$(CONFIG_ARCH_MXC) += imx8mp-icore-mx8mp-edimm2.2.dtb
+dtb-$(CONFIG_ARCH_MXC) += imx8mp-maivin.dtb
dtb-$(CONFIG_ARCH_MXC) += imx8mp-msc-sm2s-ep1.dtb
dtb-$(CONFIG_ARCH_MXC) += imx8mp-phyboard-pollux-rdk.dtb
dtb-$(CONFIG_ARCH_MXC) += imx8mp-skov-revb-hdmi.dtb
diff --git a/arch/arm64/boot/dts/freescale/imx8mp-maivin.dts b/arch/arm64/boot/dts/freescale/imx8mp-maivin.dts
new file mode 100644
index 000000000000..2d1c8e782465
--- /dev/null
+++ b/arch/arm64/boot/dts/freescale/imx8mp-maivin.dts
@@ -0,0 +1,236 @@
+// SPDX-License-Identifier: GPL-2.0+ OR MIT
+/*
+ * Copyright 2021 Au-Zone Technologies
+ * Copyright 2024 Ideas on Board
+ */
+
+/dts-v1/;
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/linux-event-codes.h>
+#include <dt-bindings/leds/common.h>
+
+#include "imx8mp-verdin.dtsi"
+#include "imx8mp-verdin-nonwifi.dtsi"
+
+/ {
+ model = "Au-Zone Maivin AI Vision Starter Kit";
+ compatible = "au-zone,maivin-starter-kit",
+ "toradex,verdin-imx8mp-nonwifi",
+ "toradex,verdin-imx8mp",
+ "fsl,imx8mp";
+
+ gpio-keys {
+ compatible = "gpio-keys";
+ pinctrl-0 = <&pinctrl_sw1>;
+
+ button-0 {
+ label = "SW1";
+ linux,code = <BTN_MISC>;
+ interrupts-extended = <&gpio3 16 IRQ_TYPE_LEVEL_LOW>;
+ };
+ };
+
+ leds {
+ compatible = "gpio-leds";
+ pinctrl-0 = <&pinctrl_led>;
+
+ led-0 {
+ color = <LED_COLOR_ID_BLUE>;
+ function = LED_FUNCTION_STATUS;
+ linux,default-trigger = "heartbeat";
+ gpios = <&gpio3 14 GPIO_ACTIVE_HIGH>;
+ };
+ };
+
+ csi_3v3: regulator-csi-3v3 {
+ compatible = "regulator-fixed";
+ regulator-name = "CSI_3V3";
+ pinctrl-0 = <&pinctrl_csi_3v3>;
+ gpio = <&gpio3 7 GPIO_ACTIVE_HIGH>;
+ enable-active-high;
+ startup-delay-us = <50000>; /* TODO: Determine the right value */
+ };
+
+ m2_3v3: regulator-m2-3v3 {
+ compatible = "regulator-fixed";
+ regulator-name = "M2_3V3";
+ regulator-max-microvolt = <3300000>;
+ regulator-min-microvolt = <3300000>;
+ pinctrl-0 = <&pinctrl_m2_3v3>;
+ gpio = <&gpio3 1 GPIO_ACTIVE_HIGH>;
+ enable-active-high;
+ };
+
+ /* Carrier Board Supply 3V3_SW */
+ reg_3v3: regulator-3v3-sw {
+ compatible = "regulator-fixed";
+ regulator-max-microvolt = <3300000>;
+ regulator-min-microvolt = <3300000>;
+ regulator-name = "3V3_SW";
+ };
+};
+
+&eqos {
+ status = "okay";
+};
+
+/* Verdin CAN_1 */
+&flexcan1 {
+ status = "okay";
+};
+
+/* Verdin CAN_2 */
+&flexcan2 {
+ status = "okay";
+};
+
+/* Verdin I2C_2_DSI */
+&i2c2 {
+ status = "okay";
+
+ clock-frequency = <400000>;
+ scl-gpios = <&gpio5 16 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
+ sda-gpios = <&gpio5 17 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
+
+ dac@d {
+ compatible = "ti,dac081c081";
+ reg = <0x0d>;
+ vref-supply = <&csi_3v3>;
+ };
+};
+
+/* Verdin I2C_4_CSI */
+&i2c3 {
+ status = "okay";
+
+ dac@d {
+ compatible = "ti,dac081c081";
+ reg = <0x0d>;
+ vref-supply = <&csi_3v3>;
+ };
+};
+
+/* Verdin I2C_1 */
+&i2c4 {
+ status = "okay";
+
+ temp-sensor@4b {
+ compatible = "ti,tmp102";
+ reg = <0x4b>;
+ };
+
+ /* EEPROM on the rear connector interface */
+ eeprom@54 {
+ compatible = "st,24c02", "atmel,24c02";
+ pagesize = <16>;
+ reg = <0x54>;
+ };
+};
+
+/* EEPROM on the carrier board */
+&eeprom_carrier_board {
+ status = "okay";
+};
+
+&iomuxc {
+ pinctrl_csi_3v3: csi-3v3-grp {
+ fsl,pins = <
+ MX8MP_IOMUXC_NAND_DATA01__GPIO3_IO07 0x184 /* SODIMM 58 */
+ >;
+ };
+
+ gpio7grp {
+ fsl,pins = <
+ MX8MP_IOMUXC_SAI1_RXD1__GPIO4_IO03 0x82 /* SODIMM 220 */
+ >;
+ };
+
+ gpio8grp {
+ fsl,pins = <
+ MX8MP_IOMUXC_SAI1_RXC__GPIO4_IO01 0x82 /* SODIMM 222 */
+ >;
+ };
+
+ pinctrl_led: ledgrp {
+ fsl,pins = <
+ MX8MP_IOMUXC_NAND_DQS__GPIO3_IO14 0x82 /* SODIMM 66 */
+ >;
+ };
+
+ /* M.2 power off and reset */
+ pinctrl_m2: m2grp {
+ fsl,pins = <
+ MX8MP_IOMUXC_NAND_DATA00__GPIO3_IO06 0x82 /* SODIMM 56 */
+ MX8MP_IOMUXC_NAND_DATA03__GPIO3_IO09 0x82 /* SODIMM 62 */
+ >;
+ };
+
+ pinctrl_m2_3v3: m2-3v3-grp {
+ fsl,pins = <
+ MX8MP_IOMUXC_NAND_CE0_B__GPIO3_IO01 0x82 /* SODIMM 54 */
+ >;
+ };
+
+ pinctrl_sw1: sw1grp {
+ fsl,pins = <
+ /*
+ * SW1 shortens the pin to ground when pressed, enable
+ * the internal pull-up.
+ */
+ MX8MP_IOMUXC_NAND_READY_B__GPIO3_IO16 0x1c0 /* SODIMM 64 */
+ >;
+ };
+};
+
+&reg_usdhc2_vmmc {
+ vin-supply = <&reg_3v3>;
+};
+
+/* Verdin UART_1 */
+/* Enabling RS-485 operation */
+&uart1 {
+ fsl,uart-has-rtscts;
+ linux,rs485-enabled-at-boot-time;
+};
+
+/* Verdin UART_2, for M.2 card slot */
+&uart2 {
+ status = "okay";
+};
+
+/* Verdin UART_3, used as the Linux Console */
+&uart3 {
+ status = "okay";
+};
+
+/* Verdin USB_1, USB recovery */
+&usb3_phy0 {
+ status = "okay";
+};
+
+&usb3_0 {
+ status = "okay";
+};
+
+&usb_dwc3_0 {
+ status = "okay";
+};
+
+/* Verdin USB_2, for M.2 card slot */
+&usb3_phy1 {
+ status = "okay";
+};
+
+&usb3_1 {
+ status = "okay";
+};
+
+&usb_dwc3_1 {
+ status = "okay";
+};
+
+/* Verdin SD_1, for SD card slot */
+&usdhc2 {
+ status = "okay";
+};
--
Regards,

Laurent Pinchart