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/drivers/usb/host/ohci-ep93xx.c

@@ -0,0 +1,38 @@
+/*
+ * (C) Copyright 2013
+ * Sergey Kostanbaev < sergey.kostanbaev <at> fairwaves.ru >
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <config.h>
+#include <common.h>
+
+#if defined(CONFIG_USB_OHCI_NEW) && defined(CONFIG_SYS_USB_OHCI_CPU_INIT)
+#include <asm/io.h>
+#include <asm/arch/ep93xx.h>
+
+int usb_cpu_init(void)
+{
+	struct syscon_regs *syscon = (struct syscon_regs *)SYSCON_BASE;
+	unsigned long pwr = readl(&syscon->pwrcnt);
+	writel(pwr | SYSCON_PWRCNT_USH_EN, &syscon->pwrcnt);
+
+	return 0;
+}
+
+int usb_cpu_stop(void)
+{
+	struct syscon_regs *syscon = (struct syscon_regs *)SYSCON_BASE;
+	unsigned long pwr = readl(&syscon->pwrcnt);
+	writel(pwr &  ~SYSCON_PWRCNT_USH_EN, &syscon->pwrcnt);
+
+	return 0;
+}
+
+int usb_cpu_init_fail(void)
+{
+	return usb_cpu_stop();
+}
+
+#endif /* defined(CONFIG_USB_OHCI) && defined(CONFIG_SYS_USB_OHCI_CPU_INIT) */