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/arch/arm/mach-tegra/xusb-padctl-common.h

@@ -0,0 +1,101 @@
+/*
+ * Copyright (c) 2014-2015, NVIDIA CORPORATION.  All rights reserved.
+ *
+ * SPDX-License-Identifier: GPL-2.0
+ */
+
+#ifndef _TEGRA_XUSB_PADCTL_COMMON_H_
+#define _TEGRA_XUSB_PADCTL_COMMON_H_
+
+#include <common.h>
+#include <fdtdec.h>
+
+#include <asm/io.h>
+#include <asm/arch-tegra/xusb-padctl.h>
+
+struct tegra_xusb_padctl_lane {
+	const char *name;
+
+	unsigned int offset;
+	unsigned int shift;
+	unsigned int mask;
+	unsigned int iddq;
+
+	const unsigned int *funcs;
+	unsigned int num_funcs;
+};
+
+struct tegra_xusb_phy_ops {
+	int (*prepare)(struct tegra_xusb_phy *phy);
+	int (*enable)(struct tegra_xusb_phy *phy);
+	int (*disable)(struct tegra_xusb_phy *phy);
+	int (*unprepare)(struct tegra_xusb_phy *phy);
+};
+
+struct tegra_xusb_phy {
+	unsigned int type;
+	const struct tegra_xusb_phy_ops *ops;
+	struct tegra_xusb_padctl *padctl;
+};
+
+struct tegra_xusb_padctl_pin {
+	const struct tegra_xusb_padctl_lane *lane;
+
+	unsigned int func;
+	int iddq;
+};
+
+#define MAX_GROUPS 5
+#define MAX_PINS 7
+
+struct tegra_xusb_padctl_group {
+	const char *name;
+
+	const char *pins[MAX_PINS];
+	unsigned int num_pins;
+
+	const char *func;
+	int iddq;
+};
+
+struct tegra_xusb_padctl_soc {
+	const struct tegra_xusb_padctl_lane *lanes;
+	unsigned int num_lanes;
+	const char *const *functions;
+	unsigned int num_functions;
+	struct tegra_xusb_phy *phys;
+	unsigned int num_phys;
+};
+
+struct tegra_xusb_padctl_config {
+	const char *name;
+
+	struct tegra_xusb_padctl_group groups[MAX_GROUPS];
+	unsigned int num_groups;
+};
+
+struct tegra_xusb_padctl {
+	const struct tegra_xusb_padctl_soc *socdata;
+	struct tegra_xusb_padctl_config config;
+	struct fdt_resource regs;
+	unsigned int enable;
+
+};
+extern struct tegra_xusb_padctl padctl;
+
+static inline u32 padctl_readl(struct tegra_xusb_padctl *padctl,
+			       unsigned long offset)
+{
+	return readl(padctl->regs.start + offset);
+}
+
+static inline void padctl_writel(struct tegra_xusb_padctl *padctl,
+				 u32 value, unsigned long offset)
+{
+	writel(value, padctl->regs.start + offset);
+}
+
+int tegra_xusb_process_nodes(const void *fdt, int nodes[], unsigned int count,
+	const struct tegra_xusb_padctl_soc *socdata);
+
+#endif