https://github.com/torvalds/linux
Revision f2fb6b6275eba9d312957ca44c487bd780da6169 authored by Fugang Duan on 25 May 2020, 08:18:14 UTC, committed by David S. Miller on 26 May 2020, 23:27:41 UTC
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: Fugang Duan <fugang.duan@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
1 parent 4d5c32e
Tip revision: f2fb6b6275eba9d312957ca44c487bd780da6169 authored by Fugang Duan on 25 May 2020, 08:18:14 UTC
net: stmmac: enable timestamp snapshot for required PTP packets in dwmac v5.10a
net: stmmac: enable timestamp snapshot for required PTP packets in dwmac v5.10a
Tip revision: f2fb6b6
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