R2A_MSM1
ret = regmap_write(dev->regmap, R2A_MSM1, 0x70);
ret = regmap_write(dev->regmap, R2A_MSM1, 0x02);
ret = regmap_write(dev->regmap, R2A_MSM1, 0x01);
ret = regmap_write(dev->regmap, R2A_MSM1, 0x01); /* tune */
regmap_reg_range(R2A_MSM1, R2B_MSM2),