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>
diff --git a/include/configs/o4-imx6ull-nano.h b/include/configs/o4-imx6ull-nano.h
new file mode 100644
index 0000000..b9746b9
--- /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 */