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-keystone/include/mach/xhci-keystone.h

@@ -0,0 +1,21 @@
+/*
+ * USB 3.0 DRD Controller
+ *
+ * (C) Copyright 2012-2014
+ *     Texas Instruments Incorporated, <www.ti.com>
+ *
+ * SPDX-License-Identifier:     GPL-2.0+
+ */
+
+#define USB3_PHY_REF_SSP_EN		BIT(29)
+#define USB3_PHY_OTG_VBUSVLDECTSEL	BIT(16)
+
+/* KEYSTONE2 XHCI PHY register structure */
+struct keystone_xhci_phy {
+	unsigned int phy_utmi;		/* ctl0 */
+	unsigned int phy_pipe;		/* ctl1 */
+	unsigned int phy_param_ctrl_1;	/* ctl2 */
+	unsigned int phy_param_ctrl_2;	/* ctl3 */
+	unsigned int phy_clock;		/* ctl4 */
+	unsigned int phy_pll;		/* ctl5 */
+};