OSC_CTRL_OSC_FREQ_MASK   21 drivers/clk/tegra/clk-tegra20.c #define OSC_CTRL_OSC_FREQ_MASK (3<<30)
OSC_CTRL_OSC_FREQ_MASK   22 drivers/clk/tegra/clk-tegra30.c #define OSC_CTRL_OSC_FREQ_MASK		(0xF<<28)