Add out4.ru O4-iMX-NANO board

Board designed for quick prototyping and has one microSD port,
2 Ethernet ports, 2 USB ports, I2C, SPI, CAN, RS-485, GPIO,
UART interfaces, and 2 RGB LEDs.

Signed-off-by: Oleh Kravchenko <oleg@kaa.org.ua>
Cc: Stefano Babic <sbabic@denx.de>

12 files changed, 819 insertions, 0 deletions

diff --git a/MAINTAINERS b/MAINTAINERS
index 86ff5e04a6..875eb5dfa4 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -919,6 +919,16 @@ S:	Orphaned (Since 2017-01)
 T:	git https://source.denx.de/u-boot/custodians/u-boot-onenand.git
 F:	drivers/mtd/onenand/
 
+OUT4-IMX6ULL-NANO BOARD
+M:	Oleh Kravchenko <oleg@kaa.org.ua>
+S:	Maintained
+T:	git https://github.com/Oleh-Kravchenko/u-boot-out4.git
+F:	arch/arm/dts/o4-imx-nano.dts
+F:	arch/arm/dts/o4-imx6ull-nano.dtsi
+F:	board/out4
+F:	configs/o4-imx6ull-nano_defconfig
+F:	include/configs/o4-imx6ull-nano.h
+
 PATMAN
 M:	Simon Glass <sjg@chromium.org>
 S:	Maintained
diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index 096068261d..b944778c1a 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -819,6 +819,9 @@ dtb-$(CONFIG_ARCH_MX6) += \
 	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 0000000000..d1785b7dc7
--- /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 0000000000..3fefa80eae
--- /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";
+};
diff --git a/arch/arm/mach-imx/mx6/Kconfig b/arch/arm/mach-imx/mx6/Kconfig
index 9450e6a683..0f274c41a1 100644
--- a/arch/arm/mach-imx/mx6/Kconfig
+++ b/arch/arm/mach-imx/mx6/Kconfig
@@ -619,6 +619,18 @@ config TARGET_BRPPT2
           Support
           B&R BRPPT2 platform
           based on Freescale's iMX6 SoC
+
+config TARGET_O4_IMX6ULL_NANO
+	bool "O4-iMX6ULL-NANO"
+	depends on MX6ULL
+	select BOARD_LATE_INIT
+	select DM
+	select DM_THERMAL
+	imply CMD_DM
+	help
+	  Support for www.out4.ru O4-iMX6UL-NANO platform
+	  based on Freescale's i.MX6UL/i.MX6ULL SoC.
+
 endchoice
 
 config SYS_SOC
@@ -668,5 +680,6 @@ source "board/udoo/neo/Kconfig"
 source "board/wandboard/Kconfig"
 source "board/warp/Kconfig"
 source "board/BuR/brppt2/Kconfig"
+source "board/out4/o4-imx6ull-nano/Kconfig"
 
 endif
diff --git a/board/out4/o4-imx6ull-nano/K4B4G1646D-BCMA.cfg b/board/out4/o4-imx6ull-nano/K4B4G1646D-BCMA.cfg
new file mode 100644
index 0000000000..c0dcfe9a0c
--- /dev/null
+++ b/board/out4/o4-imx6ull-nano/K4B4G1646D-BCMA.cfg
@@ -0,0 +1,91 @@
+// SPDX-License-Identifier: GPL-2.0+
+// Copyright (C) 2016 Freescale Semiconductor, Inc.
+// Copyright (C) 2021 Oleh Kravchenko <oleg@kaa.org.ua>
+
+#define __ASSEMBLY__
+#include <config.h>
+
+/* image version */
+
+IMAGE_VERSION	2
+BOOT_FROM	sd
+
+#ifdef CONFIG_IMX_HAB
+CSF CONFIG_CSF_SIZE
+#endif
+
+/*
+ * Device Configuration Data (DCD)
+ *
+ * Each entry must have the format:
+ * Addr-type           Address        Value
+ *
+ * where:
+ *	Addr-type register length (1,2 or 4 bytes)
+ *	Address	  absolute address of the register
+ *	value	  value to be stored in the register
+ */
+
+/* Enable all clocks */
+DATA 4 0x020c4068 0xffffffff
+DATA 4 0x020c406c 0xffffffff
+DATA 4 0x020c4070 0xffffffff
+DATA 4 0x020c4074 0xffffffff
+DATA 4 0x020c4078 0xffffffff
+DATA 4 0x020c407c 0xffffffff
+DATA 4 0x020c4080 0xffffffff
+
+/* Samsung K4B4G1646D-BCMA */
+DATA 4 0x020e04b4 0x000c0000
+DATA 4 0x020e04ac 0x00000000
+DATA 4 0x020e027c 0x00000030
+DATA 4 0x020e0250 0x00000030
+DATA 4 0x020e024c 0x00000030
+DATA 4 0x020e0490 0x00000030
+DATA 4 0x020e0288 0x000c0030
+DATA 4 0x020e0270 0x00000000
+DATA 4 0x020e0260 0x00000030
+DATA 4 0x020e0264 0x00000030
+DATA 4 0x020e04a0 0x00000030
+DATA 4 0x020e0494 0x00020000
+DATA 4 0x020e0280 0x00000030
+DATA 4 0x020e0284 0x00000030
+DATA 4 0x020e04b0 0x00020000
+DATA 4 0x020e0498 0x00000030
+DATA 4 0x020e04a4 0x00000030
+DATA 4 0x020e0244 0x00000030
+DATA 4 0x020e0248 0x00000030
+DATA 4 0x021b001c 0x00008000
+DATA 4 0x021b0800 0xa1390003
+DATA 4 0x021b080c 0x00030009
+DATA 4 0x021b083c 0x01440148
+DATA 4 0x021b0848 0x40403640
+DATA 4 0x021b0850 0x4040322a
+DATA 4 0x021b081c 0x33333333
+DATA 4 0x021b0820 0x33333333
+DATA 4 0x021b082c 0xf3333333
+DATA 4 0x021b0830 0xf3333333
+DATA 4 0x021b08c0 0x00944009
+DATA 4 0x021b08b8 0x00000800
+DATA 4 0x021b0004 0x0002002d
+DATA 4 0x021b0008 0x1b333030
+DATA 4 0x021b000c 0x676b52f2
+DATA 4 0x021b0010 0x926d0b63
+DATA 4 0x021b0014 0x01ff00db
+DATA 4 0x021b0018 0x00211740
+DATA 4 0x021b001c 0x00008000
+DATA 4 0x021b002c 0x000026d2
+DATA 4 0x021b0030 0x006b1023
+DATA 4 0x021b0040 0x0000004f
+DATA 4 0x021b0000 0x84180000
+DATA 4 0x021b0890 0x00400000
+DATA 4 0x021b001c 0x02008032
+DATA 4 0x021b001c 0x00008033
+DATA 4 0x021b001c 0x00048031
+DATA 4 0x021b001c 0x15108030
+DATA 4 0x021b001c 0x04008040
+DATA 4 0x021b0020 0x00007800
+DATA 4 0x021b0818 0x00000227
+DATA 4 0x021b0004 0x0002552d
+DATA 4 0x021b0404 0x00011006
+DATA 4 0x021b001c 0x00000000
diff --git a/board/out4/o4-imx6ull-nano/Kconfig b/board/out4/o4-imx6ull-nano/Kconfig
new file mode 100644
index 0000000000..c2497d521f
--- /dev/null
+++ b/board/out4/o4-imx6ull-nano/Kconfig
@@ -0,0 +1,57 @@
+if TARGET_O4_IMX6ULL_NANO
+
+config SYS_BOARD
+	default "o4-imx6ull-nano"
+
+config SYS_VENDOR
+	default "out4"
+
+config SYS_CONFIG_NAME
+	default "o4-imx6ull-nano"
+
+choice
+	prompt "Memory model"
+	default K4B4G1646D_BCMA
+	help
+	    Memory type setup.
+
+	    Please choose correct memory model here.
+
+config K4B4G1646D_BCMA
+	bool "K4B4G1646D-BCMA 256Mx16 (512 MiB/chip)"
+	help
+	    Samsung DDR3 SDRAM
+	    K4B4G1646D-BCMA
+
+config MT41K256M16HA_125E
+	bool "MT41K256M16HA-125:E 256Mx16 (512 MiB/chip)"
+	help
+	    Micron DDR3L SDRAM
+	    MT41K256M16HA-125:E
+
+endchoice
+
+choice
+	prompt "Mainboard model"
+	default O4_IMX_NANO
+	help
+	    Mainboard setup.
+
+	    Please choose correct main board model here.
+
+config O4_IMX_NANO
+	bool "O4-iMX-NANO"
+	help
+	    A baseboard for EV-iMX280-NANO module:
+	    https://out4.ru/products/board/18-o4-imx-nano.html
+
+endchoice
+
+config IMX_CONFIG
+	default "board/out4/o4-imx6ull-nano/K4B4G1646D-BCMA.cfg" if K4B4G1646D_BCMA
+	default "board/out4/o4-imx6ull-nano/MT41K256M16HA-125E.cfg" if MT41K256M16HA_125E
+
+config DEFAULT_DEVICE_TREE
+	default "o4-imx-nano" if O4_IMX_NANO
+
+endif
diff --git a/board/out4/o4-imx6ull-nano/MT41K256M16HA-125E.cfg b/board/out4/o4-imx6ull-nano/MT41K256M16HA-125E.cfg
new file mode 100644
index 0000000000..6f823a7272
--- /dev/null
+++ b/board/out4/o4-imx6ull-nano/MT41K256M16HA-125E.cfg
@@ -0,0 +1,91 @@
+// SPDX-License-Identifier: GPL-2.0+
+// Copyright (C) 2016 Freescale Semiconductor, Inc.
+// Copyright (C) 2021 Oleh Kravchenko <oleg@kaa.org.ua>
+
+#define __ASSEMBLY__
+#include <config.h>
+
+/* image version */
+
+IMAGE_VERSION	2
+BOOT_FROM	sd
+
+#ifdef CONFIG_IMX_HAB
+CSF CONFIG_CSF_SIZE
+#endif
+
+/*
+ * Device Configuration Data (DCD)
+ *
+ * Each entry must have the format:
+ * Addr-type           Address        Value
+ *
+ * where:
+ *	Addr-type register length (1,2 or 4 bytes)
+ *	Address	  absolute address of the register
+ *	value	  value to be stored in the register
+ */
+
+/* Enable all clocks */
+DATA 4 0x020c4068 0xffffffff
+DATA 4 0x020c406c 0xffffffff
+DATA 4 0x020c4070 0xffffffff
+DATA 4 0x020c4074 0xffffffff
+DATA 4 0x020c4078 0xffffffff
+DATA 4 0x020c407c 0xffffffff
+DATA 4 0x020c4080 0xffffffff
+
+/* Micron MT41K256M16HA-125:E */
+DATA 4 0x020e04b4 0x000c0000
+DATA 4 0x020e04ac 0x00000000
+DATA 4 0x020e027c 0x00000030
+DATA 4 0x020e0250 0x00000030
+DATA 4 0x020e024c 0x00000030
+DATA 4 0x020e0490 0x00000030
+DATA 4 0x020e0288 0x000c0030
+DATA 4 0x020e0270 0x00000000
+DATA 4 0x020e0260 0x00000030
+DATA 4 0x020e0264 0x00000030
+DATA 4 0x020e04a0 0x00000030
+DATA 4 0x020e0494 0x00020000
+DATA 4 0x020e0280 0x00000030
+DATA 4 0x020e0284 0x00000030
+DATA 4 0x020e04b0 0x00020000
+DATA 4 0x020e0498 0x00000030
+DATA 4 0x020e04a4 0x00000030
+DATA 4 0x020e0244 0x00000030
+DATA 4 0x020e0248 0x00000030
+DATA 4 0x021b001c 0x00008000
+DATA 4 0x021b0800 0xa1390003
+DATA 4 0x021b080c 0x0005000b
+DATA 4 0x021b083c 0x01400144
+DATA 4 0x021b0848 0x4040343a
+DATA 4 0x021b0850 0x4040342a
+DATA 4 0x021b081c 0x33333333
+DATA 4 0x021b0820 0x33333333
+DATA 4 0x021b082c 0xf3333333
+DATA 4 0x021b0830 0xf3333333
+DATA 4 0x021b08c0 0x00944009
+DATA 4 0x021b08b8 0x00000800
+DATA 4 0x021b0004 0x0002002d
+DATA 4 0x021b0008 0x1b333030
+DATA 4 0x021b000c 0x676b52f2
+DATA 4 0x021b0010 0x91eb0b63
+DATA 4 0x021b0014 0x01ff00db
+DATA 4 0x021b0018 0x00211740
+DATA 4 0x021b001c 0x00008000
+DATA 4 0x021b002c 0x000026d2
+DATA 4 0x021b0030 0x006b1023
+DATA 4 0x021b0040 0x0000004f
+DATA 4 0x021b0000 0x84180000
+DATA 4 0x021b0890 0x00400000
+DATA 4 0x021b001c 0x02008032
+DATA 4 0x021b001c 0x00008033
+DATA 4 0x021b001c 0x00048031
+DATA 4 0x021b001c 0x15108030
+DATA 4 0x021b001c 0x04008040
+DATA 4 0x021b0020 0x00007800
+DATA 4 0x021b0818 0x00000227
+DATA 4 0x021b0004 0x0002552d
+DATA 4 0x021b0404 0x00011006
+DATA 4 0x021b001c 0x00000000
diff --git a/board/out4/o4-imx6ull-nano/Makefile b/board/out4/o4-imx6ull-nano/Makefile
new file mode 100644
index 0000000000..a3f4646d9e
--- /dev/null
+++ b/board/out4/o4-imx6ull-nano/Makefile
@@ -0,0 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0+
+# Copyright (C) 2021 Oleh Kravchenko <oleg@kaa.org.ua>
+
+obj-y := o4-imx6ull-nano.o
diff --git a/board/out4/o4-imx6ull-nano/o4-imx6ull-nano.c b/board/out4/o4-imx6ull-nano/o4-imx6ull-nano.c
new file mode 100644
index 0000000000..fec1755c32
--- /dev/null
+++ b/board/out4/o4-imx6ull-nano/o4-imx6ull-nano.c
@@ -0,0 +1,86 @@
+// SPDX-License-Identifier: GPL-2.0+
+// Copyright (C) 2021 Oleh Kravchenko <oleg@kaa.org.ua>
+
+#include <asm/arch-mx6/clock.h>
+#include <asm/arch/sys_proto.h>
+#include <asm/global_data.h>
+#include <asm/mach-imx/boot_mode.h>
+#include <common.h>
+#include <env.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int dram_init(void)
+{
+	gd->ram_size = imx_ddr_size();
+
+	return 0;
+}
+
+int board_early_init_f(void)
+{
+	return 0;
+}
+
+static int setup_fec_clock(void)
+{
+	if (IS_ENABLED(CONFIG_FEC_MXC) && !IS_ENABLED(CONFIG_CLK_IMX6Q)) {
+		struct iomuxc *const iomuxc_regs = (struct iomuxc *)IOMUXC_BASE_ADDR;
+		int ret;
+
+		/*
+		 * Use 50M anatop loopback REF_CLK1 for ENET1,
+		 * clear gpr1[13], set gpr1[17].
+		 */
+		clrsetbits_le32(&iomuxc_regs->gpr[1], IOMUX_GPR1_FEC1_MASK,
+				IOMUX_GPR1_FEC1_CLOCK_MUX1_SEL_MASK);
+
+		ret = enable_fec_anatop_clock(0, ENET_50MHZ);
+		if (ret)
+			return ret;
+
+		/*
+		 * Use 50M anatop loopback REF_CLK2 for ENET2,
+		 * clear gpr1[14], set gpr1[18].
+		 */
+		clrsetbits_le32(&iomuxc_regs->gpr[1], IOMUX_GPR1_FEC2_MASK,
+				IOMUX_GPR1_FEC2_CLOCK_MUX1_SEL_MASK);
+
+		ret = enable_fec_anatop_clock(1, ENET_50MHZ);
+		if (ret)
+			return ret;
+
+		enable_enet_clk(1);
+	}
+
+	return 0;
+}
+
+int board_init(void)
+{
+	/* Address of boot parameters */
+	gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
+
+	return setup_fec_clock();
+}
+
+int board_late_init(void)
+{
+	if (IS_ENABLED(CONFIG_CMD_BMODE))
+		add_board_boot_modes(NULL);
+
+	if (IS_ENABLED(CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG)) {
+		const char *model;
+
+		model = fdt_getprop(gd->fdt_blob, 0, "model", NULL);
+		if (model)
+			env_set("board_name", model);
+	}
+
+	if (is_boot_from_usb()) {
+		env_set("bootcmd", "run bootcmd_mfg");
+		env_set("bootdelay", "0");
+	}
+
+	return 0;
+}
diff --git a/configs/o4-imx6ull-nano_defconfig b/configs/o4-imx6ull-nano_defconfig
new file mode 100644
index 0000000000..906a3afe5d
--- /dev/null
+++ b/configs/o4-imx6ull-nano_defconfig
@@ -0,0 +1,103 @@
+CONFIG_ARCH_MX6=y
+CONFIG_ARM=y
+CONFIG_DEFAULT_DEVICE_TREE="o4-imx-nano"
+CONFIG_HUSH_PARSER=y
+CONFIG_IMX_MODULE_FUSE=y
+CONFIG_MX6ULL=y
+CONFIG_O4_IMX_NANO=y
+CONFIG_PINCTRL=y
+CONFIG_PINCTRL_IMX6=y
+CONFIG_SYS_TEXT_BASE=0x87800000
+CONFIG_TARGET_O4_IMX6ULL_NANO=y
+
+# CONFIG_K4B4G1646D_BCMA is not set
+CONFIG_MT41K256M16HA_125E=y
+
+# Device Tree
+CONFIG_OF_CONTROL=y
+CONFIG_OF_LIBFDT_OVERLAY=y
+
+# Environment
+CONFIG_ENV_FAT_DEVICE_AND_PART="0:1"
+CONFIG_ENV_IS_IN_FAT=y
+CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG=y
+
+# Clock driver for imx6ull is not implemented
+# CONFIG_CLK_IMX6Q=y
+
+# Thermal
+CONFIG_DM_THERMAL=y
+CONFIG_IMX_THERMAL=y
+
+# Serial
+CONFIG_DM_SERIAL=y
+CONFIG_MXC_UART=y
+
+# eMMC support
+CONFIG_CMD_MMC=y
+CONFIG_DM_MMC=y
+CONFIG_FSL_USDHC=y
+CONFIG_SUPPORT_EMMC_BOOT=y
+CONFIG_SUPPORT_EMMC_RPMB=y
+
+# GPIO support
+CONFIG_CMD_GPIO=y
+CONFIG_DM_GPIO=y
+CONFIG_MXC_GPIO=y
+
+# USB support
+CONFIG_CI_UDC=y
+CONFIG_CMD_USB=y
+CONFIG_CMD_USB_MASS_STORAGE=y
+CONFIG_DM_USB=y
+CONFIG_USB=y
+CONFIG_USB_GADGET=y
+CONFIG_USB_GADGET_DOWNLOAD=y
+
+# Fastboot support
+CONFIG_CMD_FASTBOOT=y
+CONFIG_FASTBOOT_BUF_ADDR=0x82000000
+CONFIG_FASTBOOT_CMD_OEM_FORMAT=y
+CONFIG_FASTBOOT_FLASH=y
+CONFIG_FASTBOOT_FLASH_MMC_DEV=0
+CONFIG_USB_FUNCTION_FASTBOOT=y
+
+# Ethernet support
+CONFIG_CMD_DHCP=y
+CONFIG_CMD_MDIO=y
+CONFIG_CMD_MII=y
+CONFIG_CMD_PING=y
+CONFIG_DM_ETH=y
+CONFIG_DM_ETH_PHY=y
+CONFIG_FEC_MXC=y
+CONFIG_FEC_MXC_MDIO_BASE=0x020b4000
+CONFIG_FEC_MXC_SHARE_MDIO=y
+CONFIG_MII=y
+CONFIG_NET_RANDOM_ETHADDR=y
+CONFIG_PHYLIB=y
+CONFIG_PHY_SMSC=y
+
+# I2C
+CONFIG_CMD_I2C=y
+CONFIG_DM_I2C=y
+CONFIG_SYS_I2C_MXC=y
+
+# Watchdog support is broken
+# CONFIG_CMD_WDT=y
+# CONFIG_IMX_WATCHDOG=y
+# CONFIG_SYSRESET_WATCHDOG=y
+# CONFIG_WATCHDOG_RESET_DISABLE=y
+# CONFIG_WDT=y
+
+# VBUS
+CONFIG_DM_REGULATOR=y
+CONFIG_DM_REGULATOR_FIXED=y
+
+# misc
+CONFIG_CMD_BOOTZ=y
+CONFIG_CMD_EXT4=y
+CONFIG_CMD_FAT=y
+CONFIG_CMD_GPT=y
+CONFIG_CMD_MEMINFO=y
+CONFIG_CMD_MEMTEST=y
+CONFIG_CMD_PART=y
diff --git a/include/configs/o4-imx6ull-nano.h b/include/configs/o4-imx6ull-nano.h
new file mode 100644
index 0000000000..b9746b9b1c
--- /dev/null
+++ b/include/configs/o4-imx6ull-nano.h
@@ -0,0 +1,33 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/* Copyright (C) 2021 Oleh Kravchenko <oleg@kaa.org.ua> */
+
+#ifndef __O4_IMX6ULL_NANO_CONFIG_H
+#define __O4_IMX6ULL_NANO_CONFIG_H
+
+#include "mx6_common.h"
+
+#define CONFIG_SYS_MALLOC_LEN		(10 * SZ_1M)
+#define PHYS_SDRAM			MMDC0_ARB_BASE_ADDR
+#define CONFIG_SYS_SDRAM_BASE		PHYS_SDRAM
+#define CONFIG_SYS_INIT_RAM_ADDR	IRAM_BASE_ADDR
+#define CONFIG_SYS_INIT_RAM_SIZE	IRAM_SIZE
+#define CONFIG_SYS_INIT_SP_OFFSET	(CONFIG_SYS_INIT_RAM_SIZE - GENERATED_GBL_DATA_SIZE)
+#define CONFIG_SYS_INIT_SP_ADDR		(CONFIG_SYS_INIT_RAM_ADDR + CONFIG_SYS_INIT_SP_OFFSET)
+
+#if IS_ENABLED(CONFIG_CMD_USB)
+#	define CONFIG_MXC_USB_PORTSC		(PORT_PTS_UTMI | PORT_PTS_PTW)
+#endif /* CONFIG_CMD_USB */
+
+#if IS_ENABLED(CONFIG_FEC_MXC)
+#	define CONFIG_FEC_XCV_TYPE	RMII
+#endif /* CONFIG_FEC_MXC */
+
+#define CONFIG_EXTRA_ENV_SETTINGS \
+	"mmcdev=0\0" \
+	"mmcpart=2\0" \
+	"mmcargs=setenv bootargs root=/dev/mmcblk${mmcdev}p${mmcpart} console=ttymxc0,${baudrate} panic=30\0" \
+	"mmcboot=run mmcargs && ext4load mmc ${mmcdev}:${mmcpart} $loadaddr /boot/zImage && bootz $loadaddr - $fdtcontroladdr\0" \
+	"bootcmd=run mmcboot\0" \
+	"bootcmd_mfg=fastboot usb 0\0"
+
+#endif /* __O4_IMX6ULL_NANO_CONFIG_H */