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ptp: Fix wraparound issue in PTP TD leaf clock

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Signed-off-by: Alex Forencich <alex@alexforencich.com>
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Alex Forencich
2026-02-13 16:51:14 -08:00
parent 9c51c6e275
commit 0461953bcc
1 changed files with 2 additions and 2 deletions
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4
src/ptp/rtl/taxi_ptp_td_leaf.sv
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@@ -741,7 +741,7 @@ always_comb begin
ts_rel_ns_next[TS_REL_NS_W-1:9] = ts_rel_ns_reg[TS_REL_NS_W-1:9] + 1; ts_rel_ns_next[TS_REL_NS_W-1:9] = ts_rel_ns_reg[TS_REL_NS_W-1:9] + 1;
end end
if (dst_update_reg && !dst_sync_reg && dst_rel_shadow_valid_reg && (dst_load_cnt_reg == 0)) begin if (dst_rel_shadow_valid_reg && dst_rel_ns_shadow_reg[8] == ts_rel_ns_reg[8] && (dst_load_cnt_reg == 0)) begin
// check timestamp MSBs // check timestamp MSBs
if (dst_rel_step_shadow_reg || ts_rel_load_ts_reg) begin if (dst_rel_step_shadow_reg || ts_rel_load_ts_reg) begin
// input stepped // input stepped
@@ -789,7 +789,7 @@ always_comb begin
end end
end end
if (dst_update_reg && !dst_sync_reg && dst_tod_shadow_valid_reg && (dst_load_cnt_reg == 0)) begin if (dst_tod_shadow_valid_reg && dst_tod_ns_shadow_reg[8] == ts_tod_ns_reg[8] && (dst_load_cnt_reg == 0)) begin
// check timestamp MSBs // check timestamp MSBs
if (dst_tod_step_shadow_reg || ts_tod_load_ts_reg) begin if (dst_tod_step_shadow_reg || ts_tod_load_ts_reg) begin
// input stepped // input stepped