Commit f2fb6b62 authored by Fugang Duan's avatar Fugang Duan Committed by David S. Miller

net: stmmac: enable timestamp snapshot for required PTP packets in dwmac v5.10a

For rx filter 'HWTSTAMP_FILTER_PTP_V2_EVENT', it should be
PTP v2/802.AS1, any layer, any kind of event packet, but HW only
take timestamp snapshot for below PTP message: sync, Pdelay_req,
Pdelay_resp.

Then it causes below issue when test E2E case:
ptp4l[2479.534]: port 1: received DELAY_REQ without timestamp
ptp4l[2481.423]: port 1: received DELAY_REQ without timestamp
ptp4l[2481.758]: port 1: received DELAY_REQ without timestamp
ptp4l[2483.524]: port 1: received DELAY_REQ without timestamp
ptp4l[2484.233]: port 1: received DELAY_REQ without timestamp
ptp4l[2485.750]: port 1: received DELAY_REQ without timestamp
ptp4l[2486.888]: port 1: received DELAY_REQ without timestamp
ptp4l[2487.265]: port 1: received DELAY_REQ without timestamp
ptp4l[2487.316]: port 1: received DELAY_REQ without timestamp

Timestamp snapshot dependency on register bits in received path:
SNAPTYPSEL TSMSTRENA TSEVNTENA 	PTP_Messages
01         x         0          SYNC, Follow_Up, Delay_Req,
                                Delay_Resp, Pdelay_Req, Pdelay_Resp,
                                Pdelay_Resp_Follow_Up
01         0         1          SYNC, Pdelay_Req, Pdelay_Resp

For dwmac v5.10a, enabling all events by setting register
DWC_EQOS_TIME_STAMPING[SNAPTYPSEL] to 2’b01, clearing bit [TSEVNTENA]
to 0’b0, which can support all required events.
Signed-off-by: default avatarFugang Duan <fugang.duan@nxp.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 4d5c32ec
......@@ -630,7 +630,8 @@ static int stmmac_hwtstamp_set(struct net_device *dev, struct ifreq *ifr)
config.rx_filter = HWTSTAMP_FILTER_PTP_V2_EVENT;
ptp_v2 = PTP_TCR_TSVER2ENA;
snap_type_sel = PTP_TCR_SNAPTYPSEL_1;
ts_event_en = PTP_TCR_TSEVNTENA;
if (priv->synopsys_id != DWMAC_CORE_5_10)
ts_event_en = PTP_TCR_TSEVNTENA;
ptp_over_ipv4_udp = PTP_TCR_TSIPV4ENA;
ptp_over_ipv6_udp = PTP_TCR_TSIPV6ENA;
ptp_over_ethernet = PTP_TCR_TSIPENA;
......
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