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Linux/drivers/ptp/Kconfig

  1 #
  2 # PTP clock support configuration
  3 #
  4 
  5 menu "PTP clock support"
  6 
  7 config PTP_1588_CLOCK
  8         tristate "PTP clock support"
  9         select PPS
 10         help
 11           The IEEE 1588 standard defines a method to precisely
 12           synchronize distributed clocks over Ethernet networks. The
 13           standard defines a Precision Time Protocol (PTP), which can
 14           be used to achieve synchronization within a few dozen
 15           microseconds. In addition, with the help of special hardware
 16           time stamping units, it can be possible to achieve
 17           synchronization to within a few hundred nanoseconds.
 18 
 19           This driver adds support for PTP clocks as character
 20           devices. If you want to use a PTP clock, then you should
 21           also enable at least one clock driver as well.
 22 
 23           To compile this driver as a module, choose M here: the module
 24           will be called ptp.
 25 
 26 config PTP_1588_CLOCK_GIANFAR
 27         tristate "Freescale eTSEC as PTP clock"
 28         depends on GIANFAR
 29         select PTP_1588_CLOCK
 30         default y
 31         help
 32           This driver adds support for using the eTSEC as a PTP
 33           clock. This clock is only useful if your PTP programs are
 34           getting hardware time stamps on the PTP Ethernet packets
 35           using the SO_TIMESTAMPING API.
 36 
 37           To compile this driver as a module, choose M here: the module
 38           will be called gianfar_ptp.
 39 
 40 config PTP_1588_CLOCK_IXP46X
 41         tristate "Intel IXP46x as PTP clock"
 42         depends on IXP4XX_ETH
 43         select PTP_1588_CLOCK
 44         default y
 45         help
 46           This driver adds support for using the IXP46X as a PTP
 47           clock. This clock is only useful if your PTP programs are
 48           getting hardware time stamps on the PTP Ethernet packets
 49           using the SO_TIMESTAMPING API.
 50 
 51           To compile this driver as a module, choose M here: the module
 52           will be called ptp_ixp46x.
 53 
 54 comment "Enable PHYLIB and NETWORK_PHY_TIMESTAMPING to see the additional clocks."
 55         depends on PHYLIB=n || NETWORK_PHY_TIMESTAMPING=n
 56 
 57 config DP83640_PHY
 58         tristate "Driver for the National Semiconductor DP83640 PHYTER"
 59         depends on NETWORK_PHY_TIMESTAMPING
 60         depends on PHYLIB
 61         select PTP_1588_CLOCK
 62         ---help---
 63           Supports the DP83640 PHYTER with IEEE 1588 features.
 64 
 65           This driver adds support for using the DP83640 as a PTP
 66           clock. This clock is only useful if your PTP programs are
 67           getting hardware time stamps on the PTP Ethernet packets
 68           using the SO_TIMESTAMPING API.
 69 
 70           In order for this to work, your MAC driver must also
 71           implement the skb_tx_timestamp() function.
 72 
 73 config PTP_1588_CLOCK_PCH
 74         tristate "Intel PCH EG20T as PTP clock"
 75         depends on X86 || COMPILE_TEST
 76         depends on HAS_IOMEM
 77         select PTP_1588_CLOCK
 78         help
 79           This driver adds support for using the PCH EG20T as a PTP
 80           clock. The hardware supports time stamping of PTP packets
 81           when using the end-to-end delay (E2E) mechansim. The peer
 82           delay mechansim (P2P) is not supported.
 83 
 84           This clock is only useful if your PTP programs are getting
 85           hardware time stamps on the PTP Ethernet packets using the
 86           SO_TIMESTAMPING API.
 87 
 88           To compile this driver as a module, choose M here: the module
 89           will be called ptp_pch.
 90 
 91 endmenu

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