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Message-ID: <20250521092826.1035448-4-dario.binacchi@amarulasolutions.com>
Date: Wed, 21 May 2025 11:28:22 +0200
From: Dario Binacchi <dario.binacchi@...rulasolutions.com>
To: linux-kernel@...r.kernel.org
Cc: linux-amarula@...rulasolutions.com,
michael@...rulasolutions.com,
Dario Binacchi <dario.binacchi@...rulasolutions.com>,
Conor Dooley <conor+dt@...nel.org>,
Fabio Estevam <festevam@...il.com>,
Krzysztof Kozlowski <krzk+dt@...nel.org>,
Pengutronix Kernel Team <kernel@...gutronix.de>,
Rob Herring <robh@...nel.org>,
Sascha Hauer <s.hauer@...gutronix.de>,
Shawn Guo <shawnguo@...nel.org>,
devicetree@...r.kernel.org,
imx@...ts.linux.dev,
linux-arm-kernel@...ts.infradead.org
Subject: [PATCH 3/3] ARM: dts: mxs: support i.MX28 Amarula rmm board
The board includes the following resources:
- 256 Mbytes NAND Flash
- 256 Mbytes SRAM
- LCD-TFT controller
- CAN
- USB 2.0 high-speed/full-speed
- Ethernet MAC
Signed-off-by: Dario Binacchi <dario.binacchi@...rulasolutions.com>
---
arch/arm/boot/dts/nxp/mxs/Makefile | 1 +
.../boot/dts/nxp/mxs/imx28-amarula-rmm.dts | 302 ++++++++++++++++++
2 files changed, 303 insertions(+)
create mode 100644 arch/arm/boot/dts/nxp/mxs/imx28-amarula-rmm.dts
diff --git a/arch/arm/boot/dts/nxp/mxs/Makefile b/arch/arm/boot/dts/nxp/mxs/Makefile
index 96dd31ea19ba..d72ba702b6fa 100644
--- a/arch/arm/boot/dts/nxp/mxs/Makefile
+++ b/arch/arm/boot/dts/nxp/mxs/Makefile
@@ -5,6 +5,7 @@ dtb-$(CONFIG_ARCH_MXS) += \
imx23-sansa.dtb \
imx23-stmp378x_devb.dtb \
imx23-xfi3.dtb \
+ imx28-amarula-rmm.dtb \
imx28-apf28.dtb \
imx28-apf28dev.dtb \
imx28-apx4devkit.dtb \
diff --git a/arch/arm/boot/dts/nxp/mxs/imx28-amarula-rmm.dts b/arch/arm/boot/dts/nxp/mxs/imx28-amarula-rmm.dts
new file mode 100644
index 000000000000..ce6b34e35e1c
--- /dev/null
+++ b/arch/arm/boot/dts/nxp/mxs/imx28-amarula-rmm.dts
@@ -0,0 +1,302 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2025 Amarula Solutions, Dario Binacchi <dario.binacchi@...rulasolutions.com>
+ */
+
+/dts-v1/;
+#include "imx28.dtsi"
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/interrupt-controller/irq.h>
+
+/ {
+ model = "Amarula i.MX28 rmm";
+ compatible = "amarula,imx28-rmm", "fsl,imx28";
+
+ memory@...00000 {
+ device_type = "memory";
+ reg = <0x40000000 0x08000000>;
+ };
+
+ reg_5v: regulator-5v {
+ compatible = "regulator-fixed";
+ regulator-name = "5v";
+ regulator-min-microvolt = <5000000>;
+ regulator-max-microvolt = <5000000>;
+ regulator-always-on;
+ };
+
+ reg_3v3: regulator-3v3 {
+ compatible = "regulator-fixed";
+ regulator-name = "3v3";
+ regulator-min-microvolt = <3300000>;
+ regulator-max-microvolt = <3300000>;
+ regulator-always-on;
+ };
+
+ reg_1v8: regulator-1v8 {
+ compatible = "regulator-fixed";
+ regulator-name = "1v8";
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <1800000>;
+ };
+
+ 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 = <®_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;
+ };
+
+ backlight {
+ compatible = "pwm-backlight";
+ pwms = <&pwm 4 5000000 0>;
+ brightness-levels = <0 255>;
+ num-interpolated-steps = <255>;
+ default-brightness-level = <255>;
+ power-supply = <®_5v>;
+ };
+
+ beeper {
+ compatible = "pwm-beeper";
+ pwms = <&pwm 7 100000 0>;
+ };
+
+ leds {
+ compatible = "gpio-leds";
+ pinctrl-names = "default";
+ pinctrl-0 = <&leds_pins>;
+
+ led-0 {
+ label = "status";
+ gpios = <&gpio2 7 GPIO_ACTIVE_HIGH>;
+ default-state = "off";
+ };
+
+ led-1 {
+ label = "x22_5";
+ gpios = <&gpio3 16 GPIO_ACTIVE_HIGH>;
+ default-state = "off";
+ };
+
+ led-2 {
+ label = "x22_4";
+ gpios = <&gpio3 17 GPIO_ACTIVE_HIGH>;
+ default-state = "off";
+ };
+ };
+};
+
+&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>;
+ xceiver-supply = <®_3v3>;
+ status = "okay";
+};
+
+&duart {
+ pinctrl-names = "default";
+ pinctrl-0 = <&duart_pins_b>;
+ status = "okay";
+};
+
+&duart_pins_b {
+ fsl,voltage = <MXS_VOLTAGE_LOW>;
+};
+
+&gpmi {
+ pinctrl-names = "default";
+ pinctrl-0 = <&gpmi_pins_a &gpmi_status_cfg>;
+ status = "okay";
+};
+
+&i2c0 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&i2c0_pins_a>;
+ status = "okay";
+
+ polytouch: edt-ft5x06@38 {
+ compatible = "edt,edt-ft5x06";
+ 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 {
+ phy-mode = "rmii";
+ pinctrl-names = "default";
+ pinctrl-0 = <&mac0_pins_a>;
+ phy-supply = <®_fec_3v3>;
+ phy-handle = <ðphy>;
+ 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>;
+
+ hog_pins_a: hog-0 {
+ reg = <0>;
+ fsl,pinmux-ids = <
+ MX28_PAD_LCD_RESET__GPIO_3_30 /* LCD reset */
+ MX28_PAD_SSP2_SS1__GPIO_2_20 /* External power */
+ >;
+ fsl,drive-strength = <MXS_DRIVE_4mA>;
+ fsl,voltage = <MXS_VOLTAGE_HIGH>;
+ fsl,pull-up = <MXS_PULL_DISABLE>;
+ };
+
+ 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,voltage = <MXS_VOLTAGE_HIGH>;
+ fsl,pull-up = <MXS_PULL_ENABLE>;
+ };
+
+ 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,voltage = <MXS_VOLTAGE_HIGH>;
+ fsl,pull-up = <MXS_PULL_DISABLE>;
+ };
+
+ 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,voltage = <MXS_VOLTAGE_HIGH>;
+ fsl,pull-up = <MXS_PULL_DISABLE>;
+ };
+
+ 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,voltage = <MXS_VOLTAGE_HIGH>;
+ fsl,pull-up = <MXS_PULL_DISABLE>;
+ };
+
+ 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,voltage = <MXS_VOLTAGE_HIGH>;
+ fsl,pull-up = <MXS_PULL_DISABLE>;
+ };
+
+ 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,voltage = <MXS_VOLTAGE_HIGH>;
+ fsl,pull-up = <MXS_PULL_DISABLE>;
+ };
+};
+
+&pwm {
+ pinctrl-names = "default";
+ pinctrl-0 = <&pwm4_pins_a &pwm7_pins_a>;
+ status = "okay";
+};
+
+&ssp0 {
+ compatible = "fsl,imx28-mmc";
+ pinctrl-names = "default";
+ pinctrl-0 = <&mmc0_4bit_pins_a &mmc0_sck_cfg>;
+ status = "okay";
+ bus-width = <4>;
+ broken-cd;
+};
+
+&usb0 {
+ status = "okay";
+ vbus-supply = <®_usb0_vbus>;
+ dr_mode = "host";
+};
+
+&usb1 {
+ status = "okay";
+ vbus-supply = <®_usb1_vbus>;
+ dr_mode = "host";
+};
+
+&usbphy0 {
+ status = "okay";
+};
+
+&usbphy1 {
+ status = "okay";
+};
--
2.43.0
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