diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index 0960682..b944778 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -819,6 +819,9 @@
 	imx6-apalis.dtb \
 	imx6-colibri.dtb
 
+dtb-$(CONFIG_O4_IMX_NANO) += \
+	o4-imx-nano.dtb
+
 dtb-$(CONFIG_MX7) += imx7d-sdb.dtb \
 	imx7d-sdb-qspi.dtb \
 	imx7-cm.dtb \
diff --git a/arch/arm/dts/o4-imx-nano.dts b/arch/arm/dts/o4-imx-nano.dts
new file mode 100644
index 0000000..d1785b7
--- /dev/null
+++ b/arch/arm/dts/o4-imx-nano.dts
@@ -0,0 +1,241 @@
+// SPDX-License-Identifier: GPL-2.0+
+// Copyright (C) 2021 Oleh Kravchenko <oleg@kaa.org.ua>
+
+/dts-v1/;
+
+#include <dt-bindings/leds/common.h>
+
+#include "o4-imx6ull-nano.dtsi"
+
+/ {
+	model = "O4-iMX-NANO";
+	compatible = "out4,o4-imx-nano",
+		     "out4,o4-imx6ull-nano",
+		     "fsl,imx6ull";
+
+	aliases {
+		mmc1 = &usdhc1;
+	};
+
+	chosen {
+		stdout-path = &uart1;
+	};
+
+	leds {
+		compatible = "gpio-leds";
+
+		led@0 {
+			color = <LED_COLOR_ID_RED>;
+			gpios = <&pcf8574a 0 GPIO_ACTIVE_LOW>;
+			reg = <0>;
+		};
+
+		led@1 {
+			color = <LED_COLOR_ID_GREEN>;
+			gpios = <&pcf8574a 1 GPIO_ACTIVE_LOW>;
+			reg = <1>;
+		};
+
+		led@2 {
+			gpios = <&pcf8574a 2 GPIO_ACTIVE_LOW>;
+			color = <LED_COLOR_ID_BLUE>;
+			reg = <2>;
+		};
+
+		led@3 {
+			color = <LED_COLOR_ID_RED>;
+			gpios = <&pcf8574a 3 GPIO_ACTIVE_LOW>;
+			reg = <3>;
+		};
+
+		led@4 {
+			color = <LED_COLOR_ID_GREEN>;
+			gpios = <&pcf8574a 4 GPIO_ACTIVE_LOW>;
+			reg = <4>;
+		};
+
+		led@5 {
+			color = <LED_COLOR_ID_BLUE>;
+			gpios = <&pcf8574a 5 GPIO_ACTIVE_LOW>;
+			reg = <5>;
+		};
+	};
+
+	usbotg1_vbus: reg_usbotg1_vbus {
+		compatible = "regulator-fixed";
+		enable-active-high;
+		gpio = <&pcf8574a 6 GPIO_ACTIVE_HIGH>;
+		regulator-max-microvolt = <5000000>;
+		regulator-min-microvolt = <5000000>;
+		regulator-name = "usb0";
+	};
+
+	usbotg2_vbus: reg_usbotg2_vbus {
+		compatible = "regulator-fixed";
+		enable-active-high;
+		gpio = <&pcf8574a 7 GPIO_ACTIVE_HIGH>;
+		regulator-max-microvolt = <5000000>;
+		regulator-min-microvolt = <5000000>;
+		regulator-name = "usb1";
+	};
+};
+
+&iomuxc {
+	pinctrl_uart1: uart1grp {
+		fsl,pins = <
+			MX6UL_PAD_UART1_RX_DATA__UART1_DCE_RX	0x1b0b1
+			MX6UL_PAD_UART1_TX_DATA__UART1_DCE_TX	0x1b0b1
+		>;
+	};
+
+	pinctrl_usdhc1: usdhc1grp {
+		fsl,pins = <
+			MX6UL_PAD_SD1_CLK__USDHC1_CLK		0x10069
+			MX6UL_PAD_SD1_CMD__USDHC1_CMD		0x17059
+			MX6UL_PAD_SD1_DATA0__USDHC1_DATA0	0x17059
+			MX6UL_PAD_SD1_DATA1__USDHC1_DATA1	0x17059
+			MX6UL_PAD_SD1_DATA2__USDHC1_DATA2	0x17059
+			MX6UL_PAD_SD1_DATA3__USDHC1_DATA3	0x17059
+			MX6UL_PAD_UART1_RTS_B__USDHC1_CD_B	0x03029
+		>;
+	};
+
+	pinctrl_mdio: mdiogrp {
+		fsl,pins = <
+			MX6UL_PAD_GPIO1_IO06__ENET2_MDIO	0x1b0b0
+			MX6UL_PAD_GPIO1_IO07__ENET2_MDC		0x1b0b0
+			MX6UL_PAD_SNVS_TAMPER1__GPIO5_IO01	0xb0b0 /* RST */
+		>;
+	};
+
+	pinctrl_i2c2: i2c2grp {
+		fsl,pins = <
+			MX6UL_PAD_CSI_HSYNC__I2C2_SCL	0x4001b8b0
+			MX6UL_PAD_CSI_VSYNC__I2C2_SDA	0x4001b8b0
+		>;
+	};
+
+	pinctrl_i2c2_gpio: i2c2gpiogrp {
+		fsl,pins = <
+			MX6UL_PAD_CSI_HSYNC__GPIO4_IO20	0x1b8b0
+			MX6UL_PAD_CSI_VSYNC__GPIO4_IO19	0x1b8b0
+		>;
+	};
+
+	pinctrl_can1: can1grp {
+		fsl,pins = <
+			MX6UL_PAD_LCD_DATA08__FLEXCAN1_TX	0x1b020
+			MX6UL_PAD_LCD_DATA09__FLEXCAN1_RX	0x1b020
+		>;
+	};
+
+	pinctrl_uart2: uart2grp {
+		fsl,pins = <
+			MX6UL_PAD_UART2_RX_DATA__UART2_DCE_RX	0x1b0b1
+			MX6UL_PAD_UART2_TX_DATA__UART2_DCE_TX	0x1b0b1
+			MX6UL_PAD_UART2_CTS_B__UART2_DCE_CTS	0x1b0b1
+		>;
+	};
+};
+
+&uart1 {
+	pinctrl-0 = <&pinctrl_uart1>;
+	pinctrl-names = "default";
+	status = "okay";
+};
+
+&usdhc1 {
+	bus-width = <4>;
+	no-1-8-v;
+	pinctrl-0 = <&pinctrl_usdhc1>;
+	pinctrl-names = "default";
+	status = "okay";
+	wakeup-source;
+};
+
+&fec1 {
+	phy-handle = <&phy0>;
+	phy-mode = "rmii";
+	pinctrl-0 = <&pinctrl_fec1>;
+	pinctrl-names = "default";
+	status = "okay";
+};
+
+&fec2 {
+	phy-handle = <&phy1>;
+	phy-mode = "rmii";
+	phy-reset-duration = <250>;
+	phy-reset-post-delay = <100>;
+	phy-reset-gpios = <&gpio5 1 GPIO_ACTIVE_LOW>;
+	pinctrl-0 = <&pinctrl_fec2 &pinctrl_mdio>;
+	pinctrl-names = "default";
+	status = "okay";
+
+	mdio {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		phy0: ethernet-phy@0 {
+			clocks = <&clks IMX6UL_CLK_ENET_REF>;
+			clock-names = "rmii-ref";
+			interrupt-parent = <&gpio5>;
+			interrupts = <7 IRQ_TYPE_EDGE_FALLING>;
+			pinctrl-0 = <&pinctrl_phy0_irq>;
+			pinctrl-names = "default";
+			reg = <0>;
+		};
+
+		phy1: ethernet-phy@1 {
+			clocks = <&clks IMX6UL_CLK_ENET2_REF>;
+			clock-names = "rmii-ref";
+			interrupt-parent = <&gpio5>;
+			interrupts = <3 IRQ_TYPE_EDGE_FALLING>;
+			pinctrl-0 = <&pinctrl_phy1_irq>;
+			pinctrl-names = "default";
+			reg = <1>;
+		};
+	};
+};
+
+&usbotg1 {
+	dr_mode = "host";
+	status = "okay";
+	vbus-supply = <&usbotg1_vbus>;
+};
+
+&usbotg2 {
+	dr_mode = "host";
+	status = "okay";
+	vbus-supply = <&usbotg2_vbus>;
+};
+
+&i2c2 {
+	clock_frequency = <100000>;
+	pinctrl-0 = <&pinctrl_i2c2>;
+	pinctrl-1 = <&pinctrl_i2c2_gpio>;
+	pinctrl-names = "default", "gpio";
+	scl-gpios = <&gpio4 20 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
+	sda-gpios = <&gpio4 19 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
+	status = "okay";
+
+	pcf8574a: gpio@38 {
+		compatible = "nxp,pcf8574a";
+		#gpio-cells = <2>;
+		gpio-controller;
+		reg = <0x38>;
+	};
+};
+
+&can1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_can1>;
+	status = "okay";
+};
+
+&uart2 {
+	linux,rs485-enabled-at-boot-time;
+	pinctrl-0 = <&pinctrl_uart2>;
+	pinctrl-names = "default";
+	status = "okay";
+	uart-has-rtscts;
+};
diff --git a/arch/arm/dts/o4-imx6ull-nano.dtsi b/arch/arm/dts/o4-imx6ull-nano.dtsi
new file mode 100644
index 0000000..3fefa80
--- /dev/null
+++ b/arch/arm/dts/o4-imx6ull-nano.dtsi
@@ -0,0 +1,87 @@
+// SPDX-License-Identifier: GPL-2.0+
+// Copyright (C) 2021 Oleh Kravchenko <oleg@kaa.org.ua>
+
+/dts-v1/;
+
+#include "imx6ull.dtsi"
+
+/ {
+	model = "O4-iMX6ULL-NANO";
+	compatible = "out4,o4-imx6ull-nano", "fsl,imx6ull";
+
+	aliases {
+		mmc0 = &usdhc2;
+	};
+
+	memory@80000000 {
+		device_type = "memory";
+		reg = <0x80000000 0x20000000>;
+	};
+};
+
+&iomuxc {
+	pinctrl_usdhc2: usdhc2grp {
+		fsl,pins = <
+			MX6UL_PAD_NAND_ALE__USDHC2_RESET_B	0x17059
+			MX6UL_PAD_NAND_DATA00__USDHC2_DATA0	0x17059
+			MX6UL_PAD_NAND_DATA01__USDHC2_DATA1	0x17059
+			MX6UL_PAD_NAND_DATA02__USDHC2_DATA2	0x17059
+			MX6UL_PAD_NAND_DATA03__USDHC2_DATA3	0x17059
+			MX6UL_PAD_NAND_DATA04__USDHC2_DATA4	0x17059
+			MX6UL_PAD_NAND_DATA05__USDHC2_DATA5	0x17059
+			MX6UL_PAD_NAND_DATA06__USDHC2_DATA6	0x17059
+			MX6UL_PAD_NAND_DATA07__USDHC2_DATA7	0x17059
+			MX6UL_PAD_NAND_RE_B__USDHC2_CLK		0x10069
+			MX6UL_PAD_NAND_WE_B__USDHC2_CMD		0x17059
+		>;
+	};
+
+	pinctrl_fec1: fec1grp {
+		fsl,pins = <
+			MX6UL_PAD_ENET1_RX_DATA0__ENET1_RDATA00	0x1b0b0
+			MX6UL_PAD_ENET1_RX_DATA1__ENET1_RDATA01	0x1b0b0
+			MX6UL_PAD_ENET1_RX_EN__ENET1_RX_EN	0x1b0b0
+			MX6UL_PAD_ENET1_RX_ER__ENET1_RX_ER	0x1b0b0
+			MX6UL_PAD_ENET1_TX_CLK__ENET1_REF_CLK1	0x4001b031
+			MX6UL_PAD_ENET1_TX_DATA0__ENET1_TDATA00	0x1b0b0
+			MX6UL_PAD_ENET1_TX_DATA1__ENET1_TDATA01	0x1b0b0
+			MX6UL_PAD_ENET1_TX_EN__ENET1_TX_EN	0x1b0b0
+		>;
+	};
+
+	pinctrl_fec2: fec2grp {
+		fsl,pins = <
+			MX6UL_PAD_ENET2_RX_DATA0__ENET2_RDATA00	0x1b0b0
+			MX6UL_PAD_ENET2_RX_DATA1__ENET2_RDATA01	0x1b0b0
+			MX6UL_PAD_ENET2_RX_EN__ENET2_RX_EN	0x1b0b0
+			MX6UL_PAD_ENET2_RX_ER__ENET2_RX_ER	0x1b0b0
+			MX6UL_PAD_ENET2_TX_CLK__ENET2_REF_CLK2	0x4001b031
+			MX6UL_PAD_ENET2_TX_DATA0__ENET2_TDATA00	0x1b0b0
+			MX6UL_PAD_ENET2_TX_DATA1__ENET2_TDATA01	0x1b0b0
+			MX6UL_PAD_ENET2_TX_EN__ENET2_TX_EN	0x1b0b0
+		>;
+	};
+
+	pinctrl_phy0_irq: phy0grp {
+		fsl,pins = <
+			MX6UL_PAD_SNVS_TAMPER7__GPIO5_IO07	0x79
+		>;
+	};
+
+	pinctrl_phy1_irq: phy1grp {
+		fsl,pins = <
+			MX6UL_PAD_SNVS_TAMPER3__GPIO5_IO03	0x79
+		>;
+	};
+};
+
+&usdhc2 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_usdhc2>;
+	no-1-8-v;
+	non-removable;
+	keep-power-in-suspend;
+	wakeup-source;
+	bus-width = <8>;
+	status = "okay";
+};