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/board/nvidia/jetson-tk1/jetson-tk1.c

@@ -0,0 +1,65 @@
+/*
+ * (C) Copyright 2014
+ * NVIDIA Corporation <www.nvidia.com>
+ *
+ * SPDX-License-Identifier:     GPL-2.0+
+ */
+
+#include <common.h>
+#include <power/as3722.h>
+
+#include <asm/arch/gpio.h>
+#include <asm/arch/pinmux.h>
+
+#include "pinmux-config-jetson-tk1.h"
+
+DECLARE_GLOBAL_DATA_PTR;
+
+/*
+ * Routine: pinmux_init
+ * Description: Do individual peripheral pinmux configs
+ */
+void pinmux_init(void)
+{
+	pinmux_clear_tristate_input_clamping();
+
+	gpio_config_table(jetson_tk1_gpio_inits,
+			  ARRAY_SIZE(jetson_tk1_gpio_inits));
+
+	pinmux_config_pingrp_table(jetson_tk1_pingrps,
+				   ARRAY_SIZE(jetson_tk1_pingrps));
+
+	pinmux_config_drvgrp_table(jetson_tk1_drvgrps,
+				   ARRAY_SIZE(jetson_tk1_drvgrps));
+
+	pinmux_config_mipipadctrlgrp_table(jetson_tk1_mipipadctrlgrps,
+					ARRAY_SIZE(jetson_tk1_mipipadctrlgrps));
+}
+
+#ifdef CONFIG_PCI_TEGRA
+int tegra_pcie_board_init(void)
+{
+	struct udevice *pmic;
+	int err;
+
+	err = as3722_init(&pmic, 0, 0x40);
+	if (err) {
+		error("failed to initialize AS3722 PMIC: %d\n", err);
+		return err;
+	}
+
+	err = as3722_sd_enable(pmic, 4);
+	if (err < 0) {
+		error("failed to enable SD4: %d\n", err);
+		return err;
+	}
+
+	err = as3722_sd_set_voltage(pmic, 4, 0x24);
+	if (err < 0) {
+		error("failed to set SD4 voltage: %d\n", err);
+		return err;
+	}
+
+	return 0;
+}
+#endif /* PCI */