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-uniphier/clk/clk-ld4.c

@@ -0,0 +1,43 @@
+/*
+ * Copyright (C) 2011-2015 Masahiro Yamada <yamada.masahiro@socionext.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <linux/io.h>
+
+#include "../init.h"
+#include "../sc-regs.h"
+
+void uniphier_ld4_clk_init(void)
+{
+	u32 tmp;
+
+	/* deassert reset */
+	tmp = readl(SC_RSTCTRL);
+#ifdef CONFIG_UNIPHIER_ETH
+	tmp |= SC_RSTCTRL_NRST_ETHER;
+#endif
+#ifdef CONFIG_USB_EHCI
+	tmp |= SC_RSTCTRL_NRST_STDMAC;
+#endif
+#ifdef CONFIG_NAND_DENALI
+	tmp |= SC_RSTCTRL_NRST_NAND;
+#endif
+	writel(tmp, SC_RSTCTRL);
+	readl(SC_RSTCTRL); /* dummy read */
+
+	/* provide clocks */
+	tmp = readl(SC_CLKCTRL);
+#ifdef CONFIG_UNIPHIER_ETH
+	tmp |= SC_CLKCTRL_CEN_ETHER;
+#endif
+#ifdef CONFIG_USB_EHCI
+	tmp |= SC_CLKCTRL_CEN_MIO | SC_CLKCTRL_CEN_STDMAC;
+#endif
+#ifdef CONFIG_NAND_DENALI
+	tmp |= SC_CLKCTRL_CEN_NAND;
+#endif
+	writel(tmp, SC_CLKCTRL);
+	readl(SC_CLKCTRL); /* dummy read */
+}