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Message-ID: <aDcmWddO3+q+4qI1@lizhi-Precision-Tower-5810>
Date: Wed, 28 May 2025 11:06:01 -0400
From: Frank Li <Frank.li@....com>
To: Dario Binacchi <dario.binacchi@...rulasolutions.com>
Cc: linux-kernel@...r.kernel.org, michael@...rulasolutions.com,
linux-amarula@...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: Re: [PATCH v2 4/4] ARM: dts: mxs: support i.MX28 Amarula rmm board
On Wed, May 28, 2025 at 02:11:41PM +0200, Dario Binacchi wrote:
> 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@...rulasolutions.com>
>
> ---
>
> Changes in v2:
> - In imx28-amarula-rmm.dts:
> - Replace '-' with '@' for the pinctrl sub-nodes.
> - Replace edt,edt-ft5x06 with edt,edt-ft5306.
> - Drop LCD reset hog pin.
> - Add correct #address-cells and #size-cells to gpmi node.
> - Replace edt-ft5x06@38 with touchscreen@38.
> - Drop from commit messages all references to LCD display.
> - Add patch [1/4] "dt-bindings: mfd: convert mxs-lradc bindings to
> json-schema".
>
> arch/arm/boot/dts/nxp/mxs/Makefile | 1 +
> .../boot/dts/nxp/mxs/imx28-amarula-rmm.dts | 303 ++++++++++++++++++
please run https://github.com/lznuaa/dt-format to keep nice node/property
order for new dts file.
Frank
> 2 files changed, 304 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..5daa9e22715d
> --- /dev/null
> +++ b/arch/arm/boot/dts/nxp/mxs/imx28-amarula-rmm.dts
> @@ -0,0 +1,303 @@
> +// 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 {
> + #address-cells = <1>;
> + #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 {
> + 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_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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