Hi, Intel mGBE controllers that are integrated into EHL, TGL SoC have different clock source selection. This patch adds the required setting for running linuxptp time-sync.
The patch has been tested on both PSE (/dev/ptp0) and PCH TSN(/dev/ptp2) and the results for the time sync looks correct. ############################ PSE TSN #################################### > cat gPTP.conf [global] gmCapable 1 priority1 248 priority2 248 logAnnounceInterval 0 logSyncInterval -3 syncReceiptTimeout 3 neighborPropDelayThresh 800 min_neighbor_prop_delay -20000000 assume_two_step 1 path_trace_enabled 1 follow_up_info 1 transportSpecific 0x1 ptp_dst_mac 01:80:C2:00:00:0E network_transport L2 delay_mechanism P2P ingressLatency 231 egressLatency 147 tx_timestamp_timeout 50 > /usr/local/sbin/ptp4l -v 3.1 ################################# # Start ptp4l eth0 [verbose mode] ################################# > /usr/local/sbin/ptp4l -P2Hi eth0 -f gPTP.conf --step_threshold=1 -m ptp4l[8380.510]: selected /dev/ptp0 as PTP clock ptp4l[8380.535]: port 1: INITIALIZING to LISTENING on INIT_COMPLETE ptp4l[8380.535]: port 0: INITIALIZING to LISTENING on INIT_COMPLETE ptp4l[8381.655]: port 1: link down ptp4l[8381.655]: port 1: LISTENING to FAULTY on FAULT_DETECTED (FT_UNSPECIFIED) ptp4l[8381.676]: selected local clock f6cd9d.fffe.e6dc36 as best master ptp4l[8381.676]: port 1: assuming the grand master role ptp4l[8383.705]: port 1: link up ptp4l[8383.727]: port 1: FAULTY to LISTENING on INIT_COMPLETE ptp4l[8387.099]: port 1: LISTENING to MASTER on ANNOUNCE_RECEIPT_TIMEOUT_EXPIRES ptp4l[8387.099]: selected local clock f6cd9d.fffe.e6dc36 as best master ptp4l[8387.099]: port 1: assuming the grand master role ptp4l[8388.357]: port 1: new foreign master d63d87.fffe.60a9eb-1 ptp4l[8390.357]: selected best master clock d63d87.fffe.60a9eb ptp4l[8390.357]: port 1: MASTER to UNCALIBRATED on RS_SLAVE ptp4l[8390.981]: port 1: UNCALIBRATED to SLAVE on MASTER_CLOCK_SELECTED ptp4l[8391.607]: rms 24333463708388 max 48666927416912 freq -1919 +/- 725 delay 101 +/- 0 ptp4l[8392.607]: rms 2 max 6 freq -2194 +/- 3 delay 101 +/- 0 ptp4l[8393.607]: rms 5 max 10 freq -2192 +/- 7 delay 101 +/- 0 ptp4l[8394.607]: rms 4 max 5 freq -2195 +/- 5 delay 100 +/- 0 ptp4l[8395.607]: rms 4 max 9 freq -2198 +/- 4 delay 100 +/- 0 ptp4l[8396.607]: rms 5 max 9 freq -2201 +/- 6 delay 100 +/- 0 ptp4l[8397.607]: rms 6 max 8 freq -2196 +/- 8 delay 101 +/- 0 ptp4l[8398.607]: rms 5 max 9 freq -2195 +/- 7 delay 102 +/- 0 ptp4l[8399.607]: rms 7 max 13 freq -2199 +/- 9 delay 102 +/- 0 ptp4l[8400.608]: rms 6 max 14 freq -2198 +/- 8 delay 101 +/- 0 ptp4l[8401.608]: rms 8 max 10 freq -2195 +/- 10 delay 101 +/- 0 ######################################################################### ############################ PCH TSN #################################### > cat gPTP.conf [global] gmCapable 1 priority1 248 priority2 248 logAnnounceInterval 0 logSyncInterval -3 syncReceiptTimeout 3 neighborPropDelayThresh 800 min_neighbor_prop_delay -20000000 assume_two_step 1 path_trace_enabled 1 follow_up_info 1 transportSpecific 0x1 ptp_dst_mac 01:80:C2:00:00:0E network_transport L2 delay_mechanism P2P ingressLatency 503 egressLatency 275 tx_timestamp_timeout 50 > /usr/local/sbin/ptp4l -v 3.1 ################################# # Start ptp4l eth2 [verbose mode] ################################# > /usr/local/sbin/ptp4l -P2Hi eth2 -f gPTP.conf --step_threshold=1 -m ptp4l[8526.902]: selected /dev/ptp2 as PTP clock ptp4l[8526.957]: port 1: INITIALIZING to LISTENING on INIT_COMPLETE ptp4l[8526.957]: port 0: INITIALIZING to LISTENING on INIT_COMPLETE ptp4l[8526.957]: port 1: link down ptp4l[8526.957]: port 1: LISTENING to FAULTY on FAULT_DETECTED (FT_UNSPECIFIED) ptp4l[8526.978]: selected local clock 7ab054.fffe.8aaa86 as best master ptp4l[8526.979]: port 1: assuming the grand master role ptp4l[8528.026]: port 1: link up ptp4l[8528.058]: port 1: FAULTY to LISTENING on INIT_COMPLETE ptp4l[8531.070]: port 1: LISTENING to MASTER on ANNOUNCE_RECEIPT_TIMEOUT_EXPIRES ptp4l[8531.070]: selected local clock 7ab054.fffe.8aaa86 as best master ptp4l[8531.070]: port 1: assuming the grand master role ptp4l[8532.878]: port 1: new foreign master 5ee86b.fffe.dd4586-1 ptp4l[8534.878]: selected best master clock 5ee86b.fffe.dd4586 ptp4l[8534.878]: port 1: MASTER to UNCALIBRATED on RS_SLAVE ptp4l[8535.387]: port 1: UNCALIBRATED to SLAVE on MASTER_CLOCK_SELECTED ptp4l[8536.012]: rms 24333477164408 max 48666954328964 freq -1980 +/- 749 delay 224 +/- 0 ptp4l[8537.012]: rms 48 max 61 freq -2195 +/- 13 delay 221 +/- 0 ptp4l[8538.012]: rms 29 max 43 freq -2182 +/- 6 delay 221 +/- 0 ptp4l[8539.012]: rms 13 max 27 freq -2192 +/- 14 delay 221 +/- 0 ptp4l[8540.012]: rms 8 max 13 freq -2205 +/- 10 delay 221 +/- 0 ptp4l[8541.013]: rms 12 max 20 freq -2217 +/- 13 delay 224 +/- 0 ptp4l[8542.013]: rms 7 max 17 freq -2214 +/- 10 delay 221 +/- 0 ptp4l[8543.013]: rms 7 max 11 freq -2208 +/- 10 delay 221 +/- 0 ptp4l[8544.013]: rms 8 max 16 freq -2214 +/- 10 delay 220 +/- 0 ######################################################################### Thanks Boon Leong Wong, Vee Khee (1): stmmac: intel: Add PSE and PCH PTP clock source selection .../net/ethernet/stmicro/stmmac/dwmac-intel.c | 46 +++++++++++++++++++ drivers/net/ethernet/stmicro/stmmac/dwmac4.h | 7 +++ .../net/ethernet/stmicro/stmmac/stmmac_ptp.c | 3 ++ include/linux/stmmac.h | 1 + 4 files changed, 57 insertions(+) -- 2.25.1
