OV5640_SCLK_ROOT_DIV 823 drivers/media/i2c/ov5640.c #define OV5640_SCLK2X_ROOT_DIV (OV5640_SCLK_ROOT_DIV / 2) OV5640_SCLK_ROOT_DIV 1909 drivers/media/i2c/ov5640.c ilog2(OV5640_SCLK_ROOT_DIV));