CLK_SOURCE_PWM     26 drivers/clk/tegra/clk-tegra-periph.c #define CLK_SOURCE_PWM 0x110
CLK_SOURCE_PWM     89 drivers/clk/tegra/clk-tegra20.c #define CLK_SOURCE_PWM 0x110
CLK_SOURCE_PWM     96 drivers/clk/tegra/clk-tegra30.c #define CLK_SOURCE_PWM 0x110