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Workaround for "PHC time jumps ~4 seconds there and back on AQC107" #63

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Workaround for "PHC time jumps ~4 seconds there and back on AQC107" #63

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4 changes: 4 additions & 0 deletions hw_atl/hw_atl_b0.c
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Original file line number Diff line number Diff line change
Expand Up @@ -1396,6 +1396,10 @@ static int hw_atl_b0_adj_clock_freq(struct aq_hw_s *self, s32 ppb)
AQ_HW_PHY_COUNTER_HZ,
AQ_HW_MAC_COUNTER_HZ);

// Workaround for sudden jumps in clock time. See https://www.spinics.net/lists/netdev/msg1013570.html .
if (((s32)fwreq.ptp_adj_freq.mac_ns_adj) < 0)
fwreq.ptp_adj_freq.mac_ns_adj = fwreq.ptp_adj_freq.mac_fns_adj = 0;

size = sizeof(fwreq.msg_id) + sizeof(fwreq.ptp_adj_freq);
return self->aq_fw_ops->send_fw_request(self, &fwreq, size);
}
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