MAX8907_REG_ALARM0_CNTL
ret = regmap_read(rtc->regmap, MAX8907_REG_ALARM0_CNTL, &val);
ret = regmap_write(rtc->regmap, MAX8907_REG_ALARM0_CNTL, 0);
ret = regmap_write(rtc->regmap, MAX8907_REG_ALARM0_CNTL, 0x77);
regmap_write(rtc->regmap, MAX8907_REG_ALARM0_CNTL, 0);