PTP_CLOCK_SEC
sec = readq(ptp->reg_base + PTP_CLOCK_SEC) & 0xFFFFFFFFUL;
sec1 = readq(ptp->reg_base + PTP_CLOCK_SEC) & 0xFFFFFFFFUL;
(*seconds) = lan743x_csr_read(adapter, PTP_CLOCK_SEC);
lan743x_csr_write(adapter, PTP_CLOCK_SEC, seconds);