PTP_RTC_SEC
[PTP_RTC_SEC] = 0x0608,
[PTP_RTC_SEC] = 0x0508,
ret = ksz_read32(dev, regs[PTP_RTC_SEC], &seconds);
ret = ksz_write32(dev, regs[PTP_RTC_SEC], ts->tv_sec);
ret = ksz_write32(dev, regs[PTP_RTC_SEC], abs(sec));