SD3078_REG_SC
rtc_data[SD3078_REG_SC] = bin2bcd(tm->tm_sec);
ret = regmap_bulk_write(regmap, SD3078_REG_SC, rtc_data,
#define NUM_TIME_REGS (SD3078_REG_YR - SD3078_REG_SC + 1)
ret = regmap_bulk_read(regmap, SD3078_REG_SC, rtc_data, NUM_TIME_REGS);
tm->tm_sec = bcd2bin(rtc_data[SD3078_REG_SC] & 0x7F);