Minor documentation improvements.
Signed-off-by: Miroslav Lichvar <mlichvar@redhat.com>master
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@ -40,9 +40,9 @@ program.
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Two synchronization modes are supported, one uses a pulse per second (PPS)
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Two synchronization modes are supported, one uses a pulse per second (PPS)
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signal provided by the source clock and the other mode reads time from the
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signal provided by the source clock and the other mode reads time from the
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source clock directly. The PPS mode is usually preferred, because reading the
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source clock directly. Some clocks can be used in both modes, the mode which
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PHC is slow and introduces an unknown error in the readings, but not all PHCs
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will synchronize the slave clock with better accuracy depends on hardware and
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provide the PPS signal.
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driver implementation.
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.SH OPTIONS
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.SH OPTIONS
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.TP
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.TP
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@ -58,7 +58,7 @@ option should be used too. This option can be used only with the system clock as
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the slave clock.
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the slave clock.
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.TP
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.TP
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.BI \-s " device"
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.BI \-s " device"
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Specify the master clock by device (e.g. dev/ptp0) or interface (e.g. eth0) or
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Specify the master clock by device (e.g. /dev/ptp0) or interface (e.g. eth0) or
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by name (e.g. CLOCK_REALTIME for the system clock). When this option is used
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by name (e.g. CLOCK_REALTIME for the system clock). When this option is used
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together with the
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together with the
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.B \-d
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.B \-d
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7
ptp4l.8
7
ptp4l.8
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@ -32,10 +32,13 @@ a peer delay request is received.
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.TP
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.TP
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.B \-E
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.B \-E
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Select the delay request-response (E2E) mechanism. This is the default
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Select the delay request-response (E2E) mechanism. This is the default
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mechanism.
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mechanism. All clocks on single PTP communication path must use the same
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mechanism. A warning will be printed when a peer delay request is received on
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port using the E2E mechanism.
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.TP
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.TP
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.B \-P
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.B \-P
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Select the peer delay (P2P) mechanism.
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Select the peer delay (P2P) mechanism. A warning will be printed when a delay
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request is received on port using the P2P mechanism.
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.TP
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.TP
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.B \-2
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.B \-2
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Select the IEEE 802.3 network transport.
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Select the IEEE 802.3 network transport.
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