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/test/dm/pmic.c

@@ -0,0 +1,69 @@
+/*
+ * Tests for the driver model pmic API
+ *
+ * Copyright (c) 2015 Samsung Electronics
+ * Przemyslaw Marczak <p.marczak@samsung.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+#include <errno.h>
+#include <dm.h>
+#include <fdtdec.h>
+#include <malloc.h>
+#include <dm/device-internal.h>
+#include <dm/root.h>
+#include <dm/util.h>
+#include <dm/test.h>
+#include <dm/uclass-internal.h>
+#include <power/pmic.h>
+#include <power/sandbox_pmic.h>
+#include <test/ut.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+/* Test PMIC get method */
+static int dm_test_power_pmic_get(struct unit_test_state *uts)
+{
+	const char *name = "sandbox_pmic";
+	struct udevice *dev;
+
+	ut_assertok(pmic_get(name, &dev));
+	ut_assertnonnull(dev);
+
+	/* Check PMIC's name */
+	ut_asserteq_str(name, dev->name);
+
+	return 0;
+}
+DM_TEST(dm_test_power_pmic_get, DM_TESTF_SCAN_FDT);
+
+/* Test PMIC I/O */
+static int dm_test_power_pmic_io(struct unit_test_state *uts)
+{
+	const char *name = "sandbox_pmic";
+	uint8_t out_buffer, in_buffer;
+	struct udevice *dev;
+	int reg_count, i;
+
+	ut_assertok(pmic_get(name, &dev));
+
+	reg_count = pmic_reg_count(dev);
+	ut_asserteq(reg_count, SANDBOX_PMIC_REG_COUNT);
+
+	/*
+	 * Test PMIC I/O - write and read a loop counter.
+	 * usually we can't write to all PMIC's registers in the real hardware,
+	 * but we can to the sandbox pmic.
+	 */
+	for (i = 0; i < reg_count; i++) {
+		out_buffer = i;
+		ut_assertok(pmic_write(dev, i, &out_buffer, 1));
+		ut_assertok(pmic_read(dev, i, &in_buffer, 1));
+		ut_asserteq(out_buffer, in_buffer);
+	}
+
+	return 0;
+}
+DM_TEST(dm_test_power_pmic_io, DM_TESTF_SCAN_FDT);