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/pll/pll-spectrum-ld4.c

@@ -0,0 +1,21 @@
+/*
+ * 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"
+
+int uniphier_ld4_enable_dpll_ssc(const struct uniphier_board_data *bd)
+{
+	u32 tmp;
+
+	tmp = readl(SC_DPLLCTRL);
+	tmp |= SC_DPLLCTRL_SSC_EN;
+	writel(tmp, SC_DPLLCTRL);
+
+	return 0;
+}