PMU_XTAL_FREQ_RATIO
regmap_write(regmap, PMU_XTAL_FREQ_RATIO, XTAL_CTL_EN);
regmap_read(regmap, PMU_XTAL_FREQ_RATIO, &last_val);
regmap_read(regmap, PMU_XTAL_FREQ_RATIO, &cur_val);
regmap_write(regmap, PMU_XTAL_FREQ_RATIO, 0x0);