NAU8825_I2S_DL_SFT
#define NAU8825_I2S_DL_MASK (0x3 << NAU8825_I2S_DL_SFT)
#define NAU8825_I2S_DL_16 (0 << NAU8825_I2S_DL_SFT)
#define NAU8825_I2S_DL_20 (1 << NAU8825_I2S_DL_SFT)
#define NAU8825_I2S_DL_24 (2 << NAU8825_I2S_DL_SFT)
#define NAU8825_I2S_DL_32 (3 << NAU8825_I2S_DL_SFT)