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linux-loongson/arch/arm/boot/dts/nxp/mxs/imx28-amarula-rmm.dts
Dario Binacchi ad296c4114 ARM: dts: mxs: support i.MX28 Amarula rmm board 
The board includes the following resources:
 - 256 Mbytes NAND Flash
 - 128 Mbytes DRAM DDR2
 - CAN
 - USB 2.0 high-speed/full-speed
 - Ethernet MAC

Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2025-07-01 18:12:43 +08:00

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// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 2025 Amarula Solutions, Dario Binacchi <dario.binacchi@amarulasolutions.com>
*/
/dts-v1/;
#include "imx28.dtsi"
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/interrupt-controller/irq.h>
/ {
compatible = "amarula,imx28-rmm", "fsl,imx28";
model = "Amarula i.MX28 rmm";
memory@40000000 {
reg = <0x40000000 0x08000000>;
device_type = "memory";
};
backlight {
compatible = "pwm-backlight";
pwms = <&pwm 4 5000000 0>;
brightness-levels = <0 255>;
num-interpolated-steps = <255>;
default-brightness-level = <255>;
power-supply = <&reg_5v>;
};
beeper {
compatible = "pwm-beeper";
pwms = <&pwm 7 100000 0>;
};
leds {
compatible = "gpio-leds";
pinctrl-names = "default";
pinctrl-0 = <&leds_pins>;
led-0 {
gpios = <&gpio2 7 GPIO_ACTIVE_HIGH>;
default-state = "off";
};
led-1 {
gpios = <&gpio3 16 GPIO_ACTIVE_HIGH>;
default-state = "off";
};
led-2 {
gpios = <&gpio3 17 GPIO_ACTIVE_HIGH>;
default-state = "off";
};
};
reg_1v8: regulator-1v8 {
compatible = "regulator-fixed";
regulator-name = "1v8";
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <1800000>;
};
reg_3v3: regulator-3v3 {
compatible = "regulator-fixed";
regulator-name = "3v3";
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
regulator-always-on;
};
reg_5v: regulator-5v {
compatible = "regulator-fixed";
regulator-name = "5v";
regulator-min-microvolt = <5000000>;
regulator-max-microvolt = <5000000>;
regulator-always-on;
};
reg_fec_3v3: regulator-fec-3v3 {
compatible = "regulator-fixed";
pinctrl-names = "default";
pinctrl-0 = <&fec_3v3_enable_pin>;
regulator-name = "fec-3v3";
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
gpios = <&gpio3 27 GPIO_ACTIVE_HIGH>;
enable-active-high;
startup-delay-us = <300000>;
vin-supply = <&reg_5v>;
};
reg_usb0_vbus: regulator-usb0-vbus {
compatible = "regulator-fixed";
pinctrl-names = "default";
pinctrl-0 = <&usb0_vbus_enable_pin>;
regulator-name = "usb0_vbus";
regulator-min-microvolt = <5000000>;
regulator-max-microvolt = <5000000>;
gpio = <&gpio2 5 GPIO_ACTIVE_HIGH>;
enable-active-high;
regulator-always-on;
};
reg_usb1_vbus: regulator-usb1-vbus {
compatible = "regulator-fixed";
pinctrl-names = "default";
pinctrl-0 = <&usb1_vbus_enable_pin>;
regulator-name = "usb1_vbus";
regulator-min-microvolt = <5000000>;
regulator-max-microvolt = <5000000>;
gpio = <&gpio2 6 GPIO_ACTIVE_HIGH>;
enable-active-high;
regulator-always-on;
};
};
&auart0 {
pinctrl-names = "default";
pinctrl-0 = <&auart0_2pins_a>;
status = "okay";
};
&auart1 {
pinctrl-names = "default";
pinctrl-0 = <&auart1_pins_a>;
status = "okay";
};
&can0 {
pinctrl-names = "default";
pinctrl-0 = <&can0_pins_a>;
status = "okay";
};
&duart {
pinctrl-names = "default";
pinctrl-0 = <&duart_pins_b>;
status = "okay";
};
&duart_pins_b {
fsl,voltage = <MXS_VOLTAGE_LOW>;
};
&gpmi {
#size-cells = <0>;
pinctrl-names = "default";
pinctrl-0 = <&gpmi_pins_a &gpmi_status_cfg>;
status = "okay";
};
&i2c0 {
pinctrl-names = "default";
pinctrl-0 = <&i2c0_pins_a>;
status = "okay";
touchscreen: touchscreen@38 {
compatible = "edt,edt-ft5306";
reg = <0x38>;
pinctrl-names = "default";
pinctrl-0 = <&edt_ft5x06_pins &edt_ft5x06_wake_pin>;
interrupt-parent = <&gpio0>;
interrupts = <19 IRQ_TYPE_EDGE_RISING>;
reset-gpios = <&gpio0 21 GPIO_ACTIVE_LOW>;
wake-gpios = <&gpio0 18 GPIO_ACTIVE_HIGH>;
};
};
&lradc {
status = "okay";
};
&mac0 {
pinctrl-names = "default";
pinctrl-0 = <&mac0_pins_a>;
phy-mode = "rmii";
phy-supply = <&reg_fec_3v3>;
phy-handle = <&ethphy>;
status = "okay";
mdio {
#address-cells = <1>;
#size-cells = <0>;
ethphy: ethernet-phy@0 {
compatible = "ethernet-phy-ieee802.3-c22";
reg = <0>;
max-speed = <100>;
reset-gpios = <&gpio3 28 GPIO_ACTIVE_LOW>;
reset-assert-us = <4000>;
reset-deassert-us = <4000>;
};
};
};
&pinctrl {
pinctrl-names = "default";
pinctrl-0 = <&hog_pins_a>;
edt_ft5x06_pins: edt-ft5x06@0 {
reg = <0>;
fsl,pinmux-ids = <
MX28_PAD_GPMI_RDY1__GPIO_0_21 /* Reset */
MX28_PAD_GPMI_CE3N__GPIO_0_19 /* Interrupt */
>;
fsl,drive-strength = <MXS_DRIVE_4mA>;
fsl,pull-up = <MXS_PULL_ENABLE>;
fsl,voltage = <MXS_VOLTAGE_HIGH>;
};
edt_ft5x06_wake_pin: edt-ft5x06-wake@0 {
reg = <0>;
fsl,pinmux-ids = <MX28_PAD_GPMI_CE2N__GPIO_0_18>;
fsl,drive-strength = <MXS_DRIVE_16mA>;
fsl,pull-up = <MXS_PULL_DISABLE>;
fsl,voltage = <MXS_VOLTAGE_HIGH>;
};
fec_3v3_enable_pin: fec-3v3-enable@0 {
reg = <0>;
fsl,pinmux-ids = <MX28_PAD_SPDIF__GPIO_3_27>;
fsl,drive-strength = <MXS_DRIVE_4mA>;
fsl,pull-up = <MXS_PULL_DISABLE>;
fsl,voltage = <MXS_VOLTAGE_HIGH>;
};
hog_pins_a: hog@0 {
reg = <0>;
fsl,pinmux-ids = <
MX28_PAD_SSP2_SS1__GPIO_2_20 /* External power */
>;
fsl,drive-strength = <MXS_DRIVE_4mA>;
fsl,pull-up = <MXS_PULL_DISABLE>;
fsl,voltage = <MXS_VOLTAGE_HIGH>;
};
leds_pins: leds@0 {
reg = <0>;
fsl,pinmux-ids = <
MX28_PAD_SSP0_DATA7__GPIO_2_7
MX28_PAD_PWM0__GPIO_3_16
MX28_PAD_PWM1__GPIO_3_17
>;
fsl,drive-strength = <MXS_DRIVE_4mA>;
fsl,pull-up = <MXS_PULL_DISABLE>;
fsl,voltage = <MXS_VOLTAGE_HIGH>;
};
usb0_vbus_enable_pin: usb0-vbus-enable@0 {
reg = <0>;
fsl,pinmux-ids = <MX28_PAD_SSP0_DATA5__GPIO_2_5>;
fsl,drive-strength = <MXS_DRIVE_4mA>;
fsl,pull-up = <MXS_PULL_DISABLE>;
fsl,voltage = <MXS_VOLTAGE_HIGH>;
};
usb1_vbus_enable_pin: usb1-vbus-enable@0 {
reg = <0>;
fsl,pinmux-ids = <MX28_PAD_SSP0_DATA6__GPIO_2_6>;
fsl,drive-strength = <MXS_DRIVE_4mA>;
fsl,pull-up = <MXS_PULL_DISABLE>;
fsl,voltage = <MXS_VOLTAGE_HIGH>;
};
};
&pwm {
pinctrl-names = "default";
pinctrl-0 = <&pwm4_pins_a &pwm7_pins_a>;
status = "okay";
};
/* microSD */
&ssp0 {
compatible = "fsl,imx28-mmc";
pinctrl-names = "default";
pinctrl-0 = <&mmc0_4bit_pins_a &mmc0_sck_cfg>;
broken-cd;
bus-width = <4>;
status = "okay";
};
&usb0 {
dr_mode = "host";
vbus-supply = <&reg_usb0_vbus>;
status = "okay";
};
&usb1 {
dr_mode = "host";
vbus-supply = <&reg_usb1_vbus>;
status = "okay";
};
&usbphy0 {
status = "okay";
};
&usbphy1 {
status = "okay";
};
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