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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         depends on NET
 10         select PPS
 11         select NET_PTP_CLASSIFY
 12         help
 13           The IEEE 1588 standard defines a method to precisely
 14           synchronize distributed clocks over Ethernet networks. The
 15           standard defines a Precision Time Protocol (PTP), which can
 16           be used to achieve synchronization within a few dozen
 17           microseconds. In addition, with the help of special hardware
 18           time stamping units, it can be possible to achieve
 19           synchronization to within a few hundred nanoseconds.
 20 
 21           This driver adds support for PTP clocks as character
 22           devices. If you want to use a PTP clock, then you should
 23           also enable at least one clock driver as well.
 24 
 25           To compile this driver as a module, choose M here: the module
 26           will be called ptp.
 27 
 28 config PTP_1588_CLOCK_GIANFAR
 29         tristate "Freescale eTSEC as PTP clock"
 30         depends on GIANFAR
 31         select PTP_1588_CLOCK
 32         default y
 33         help
 34           This driver adds support for using the eTSEC as a PTP
 35           clock. This clock is only useful if your PTP programs are
 36           getting hardware time stamps on the PTP Ethernet packets
 37           using the SO_TIMESTAMPING API.
 38 
 39           To compile this driver as a module, choose M here: the module
 40           will be called gianfar_ptp.
 41 
 42 config PTP_1588_CLOCK_IXP46X
 43         tristate "Intel IXP46x as PTP clock"
 44         depends on IXP4XX_ETH
 45         select PTP_1588_CLOCK
 46         default y
 47         help
 48           This driver adds support for using the IXP46X as a PTP
 49           clock. This clock is only useful if your PTP programs are
 50           getting hardware time stamps on the PTP Ethernet packets
 51           using the SO_TIMESTAMPING API.
 52 
 53           To compile this driver as a module, choose M here: the module
 54           will be called ptp_ixp46x.
 55 
 56 comment "Enable PHYLIB and NETWORK_PHY_TIMESTAMPING to see the additional clocks."
 57         depends on PHYLIB=n || NETWORK_PHY_TIMESTAMPING=n
 58 
 59 config DP83640_PHY
 60         tristate "Driver for the National Semiconductor DP83640 PHYTER"
 61         depends on NETWORK_PHY_TIMESTAMPING
 62         depends on PHYLIB
 63         select PTP_1588_CLOCK
 64         ---help---
 65           Supports the DP83640 PHYTER with IEEE 1588 features.
 66 
 67           This driver adds support for using the DP83640 as a PTP
 68           clock. This clock is only useful if your PTP programs are
 69           getting hardware time stamps on the PTP Ethernet packets
 70           using the SO_TIMESTAMPING API.
 71 
 72           In order for this to work, your MAC driver must also
 73           implement the skb_tx_timestamp() function.
 74 
 75 config PTP_1588_CLOCK_PCH
 76         tristate "Intel PCH EG20T as PTP clock"
 77         depends on X86_32 || COMPILE_TEST
 78         depends on HAS_IOMEM && NET
 79         select PTP_1588_CLOCK
 80         help
 81           This driver adds support for using the PCH EG20T as a PTP
 82           clock. The hardware supports time stamping of PTP packets
 83           when using the end-to-end delay (E2E) mechansim. The peer
 84           delay mechansim (P2P) is not supported.
 85 
 86           This clock is only useful if your PTP programs are getting
 87           hardware time stamps on the PTP Ethernet packets using the
 88           SO_TIMESTAMPING API.
 89 
 90           To compile this driver as a module, choose M here: the module
 91           will be called ptp_pch.
 92 
 93 endmenu

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