phc = &sparx5->phc[SPARX5_PHC_PORT];
 
-       info->phc_index = phc->clock ? ptp_clock_index(phc->clock) : -1;
-       if (info->phc_index == -1) {
-               info->so_timestamping |= SOF_TIMESTAMPING_TX_SOFTWARE |
-                                        SOF_TIMESTAMPING_RX_SOFTWARE |
-                                        SOF_TIMESTAMPING_SOFTWARE;
+       if (phc->clock) {
+               info->phc_index = ptp_clock_index(phc->clock);
+       } else {
+               info->so_timestamping |= SOF_TIMESTAMPING_TX_SOFTWARE;
                return 0;
        }
        info->so_timestamping |= SOF_TIMESTAMPING_TX_SOFTWARE |
-                                SOF_TIMESTAMPING_RX_SOFTWARE |
-                                SOF_TIMESTAMPING_SOFTWARE |
                                 SOF_TIMESTAMPING_TX_HARDWARE |
                                 SOF_TIMESTAMPING_RX_HARDWARE |
                                 SOF_TIMESTAMPING_RAW_HARDWARE;