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-at91.c

@@ -0,0 +1,70 @@
+/*
+ * (C) Copyright 2006
+ * DENX Software Engineering <mk@denx.de>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <common.h>
+
+#if defined(CONFIG_USB_OHCI_NEW) && defined(CONFIG_SYS_USB_OHCI_CPU_INIT)
+
+#include <asm/arch/clk.h>
+
+int usb_cpu_init(void)
+{
+#ifdef CONFIG_USB_ATMEL_CLK_SEL_PLLB
+	if (at91_pllb_clk_enable(get_pllb_init()))
+		return -1;
+
+#ifdef CONFIG_AT91SAM9N12
+	at91_usb_clk_init(AT91_PMC_USBS_USB_PLLB | AT91_PMC_USB_DIV_2);
+#endif
+#elif defined(CONFIG_USB_ATMEL_CLK_SEL_UPLL)
+	if (at91_upll_clk_enable())
+		return -1;
+
+	at91_usb_clk_init(AT91_PMC_USBS_USB_UPLL | AT91_PMC_USBDIV_10);
+#endif
+
+	at91_periph_clk_enable(ATMEL_ID_UHP);
+
+	at91_system_clk_enable(ATMEL_PMC_UHP);
+#if defined(CONFIG_AT91SAM9261) || defined(CONFIG_AT91SAM9G10)
+	at91_system_clk_enable(AT91_PMC_HCK0);
+#endif
+
+	return 0;
+}
+
+int usb_cpu_stop(void)
+{
+	at91_periph_clk_disable(ATMEL_ID_UHP);
+
+	at91_system_clk_disable(ATMEL_PMC_UHP);
+#if defined(CONFIG_AT91SAM9261) || defined(CONFIG_AT91SAM9G10)
+	at91_system_clk_disable(AT91_PMC_HCK0);
+#endif
+
+#ifdef CONFIG_USB_ATMEL_CLK_SEL_PLLB
+#ifdef CONFIG_AT91SAM9N12
+	at91_usb_clk_init(0);
+#endif
+
+	if (at91_pllb_clk_disable())
+		return -1;
+
+#elif defined(CONFIG_USB_ATMEL_CLK_SEL_UPLL)
+	if (at91_upll_clk_disable())
+		return -1;
+#endif
+
+	return 0;
+}
+
+int usb_cpu_init_fail(void)
+{
+	return usb_cpu_stop();
+}
+
+#endif /* defined(CONFIG_USB_OHCI) && defined(CONFIG_SYS_USB_OHCI_CPU_INIT) */