avionic design with actual uboot and tooling

submodule of avionic design uboot bootloader and with included tools to
get you started , read readme.md and readme-tk1-loader.md

u-boot/include/power/max77693_fg.h

@@ -0,0 +1,49 @@
+/*
+ * Copyright (C) 2013 Samsung Electronics
+ * Piotr Wilczek <p.wilczek@samsung.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#ifndef __MAX77693_FG_H_
+#define __MAX77693_FG_H_
+
+/* MAX 77693 registers */
+enum {
+	MAX77693_STATUS		= 0x00,
+	MAX77693_SOCREP		= 0x06,
+	MAX77693_VCELL		= 0x09,
+	MAX77693_CURRENT	= 0x0A,
+	MAX77693_AVG_CURRENT	= 0x0B,
+	MAX77693_SOCMIX		= 0x0D,
+	MAX77693_SOCAV		= 0x0E,
+	MAX77693_DESIGN_CAP	= 0x18,
+	MAX77693_AVG_VCELL	= 0x19,
+	MAX77693_CONFIG		= 0x1D,
+	MAX77693_VERSION	= 0x21,
+	MAX77693_LEARNCFG	= 0x28,
+	MAX77693_FILTERCFG	= 0x29,
+	MAX77693_RELAXCFG	= 0x2A,
+	MAX77693_MISCCFG	= 0x2B,
+	MAX77693_CGAIN		= 0x2E,
+	MAX77693_COFF		= 0x2F,
+	MAX77693_RCOMP0		= 0x38,
+	MAX77693_TEMPCO		= 0x39,
+	MAX77693_FSTAT		= 0x3D,
+	MAX77693_VFOCV		= 0xEE,
+	MAX77693_VFSOC		= 0xFF,
+
+	FG_NUM_OF_REGS		= 0x100,
+};
+
+#define MAX77693_POR (1 << 1)
+
+#define MODEL_UNLOCK1		0x0059
+#define MODEL_UNLOCK2		0x00c4
+#define MODEL_LOCK1		0x0000
+#define MODEL_LOCK2		0x0000
+
+#define MAX77693_FUEL_I2C_ADDR	(0x6C >> 1)
+
+int power_fg_init(unsigned char bus);
+#endif /* __MAX77693_FG_H_ */