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/include/asm/arch-tegra124/clock.h

@@ -0,0 +1,45 @@
+/*
+ * (C) Copyright 2010-2013
+ * NVIDIA Corporation <www.nvidia.com>
+ *
+ * SPDX-License-Identifier:     GPL-2.0+
+ */
+
+/* Tegra124 clock control definitions */
+
+#ifndef _TEGRA124_CLOCK_H_
+#define _TEGRA124_CLOCK_H_
+
+#include <asm/arch-tegra/clock.h>
+
+/* CLK_RST_CONTROLLER_OSC_CTRL_0 */
+#define OSC_FREQ_SHIFT          28
+#define OSC_FREQ_MASK           (0xF << OSC_FREQ_SHIFT)
+
+/* CLK_RST_CONTROLLER_PLLC_MISC_0 */
+#define PLLC_IDDQ			(1 << 26)
+
+/* CLK_RST_CONTROLLER_CLK_SOURCE_SOR0_0 */
+#define SOR0_CLK_SEL0			(1 << 14)
+#define SOR0_CLK_SEL1			(1 << 15)
+
+int tegra_plle_enable(void);
+
+void clock_sor_enable_edp_clock(void);
+
+/**
+ * clock_set_display_rate() - Set the display clock rate
+ *
+ * @frequency: the requested PLLD frequency
+ *
+ * Return the PLLD frequenc (which may not quite what was requested), or 0
+ * on failure
+ */
+u32 clock_set_display_rate(u32 frequency);
+
+/**
+ * clock_set_up_plldp() - Set up the EDP clock ready for use
+ */
+void clock_set_up_plldp(void);
+
+#endif	/* _TEGRA124_CLOCK_H_ */