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ptp: Added a clock that uses the eTSEC found on the MPC85xx.

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The eTSEC includes a PTP clock with quite a few features. This patch adds
support for the basic clock adjustment functions, plus two external time
stamps, one alarm, and the PPS callback.

Signed-off-by: Richard Cochran <[email protected]>
Acked-by: David S. Miller <[email protected]>
Acked-by: John Stultz <[email protected]>
Signed-off-by: John Stultz <[email protected]>
This commit is contained in:
Richard Cochran 2011-04-22 12:03:54 +02:00 • committed by John Stultz
commit c78275f366
8 changed files with 708 additions and 0 deletions
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13
drivers/ptp/Kconfig
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@ -27,4 +27,17 @@ config PTP_1588_CLOCK
To compile this driver as a module, choose M here: the module
will be called ptp.
config PTP_1588_CLOCK_GIANFAR
tristate "Freescale eTSEC as PTP clock"
depends on PTP_1588_CLOCK
depends on GIANFAR
help
This driver adds support for using the eTSEC as a PTP
clock. This clock is only useful if your PTP programs are
getting hardware time stamps on the PTP Ethernet packets
using the SO_TIMESTAMPING API.
To compile this driver as a module, choose M here: the module
will be called gianfar_ptp.
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