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 && POSIX_TIMERS
  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_DTE
  29         tristate "Broadcom DTE as PTP clock"
  30         depends on PTP_1588_CLOCK
  31         depends on NET && HAS_IOMEM
  32         depends on ARCH_BCM_MOBILE || (ARCH_BCM_IPROC && !(ARCH_BCM_NSP || ARCH_BCM_5301X)) || COMPILE_TEST
  33         default y
  34         help
  35           This driver adds support for using the Digital timing engine
  36           (DTE) in the Broadcom SoC's as a PTP clock.
  37
  38           The clock can be used in both wired and wireless networks
  39           for PTP purposes.
  40
  41           To compile this driver as a module, choose M here: the module
  42           will be called ptp_dte.
  43
  44 config PTP_1588_CLOCK_GIANFAR
  45         tristate "Freescale eTSEC as PTP clock"
  46         depends on GIANFAR
  47         depends on PTP_1588_CLOCK
  48         default y
  49         help
  50           This driver adds support for using the eTSEC as a PTP
  51           clock. This clock is only useful if your PTP programs are
  52           getting hardware time stamps on the PTP Ethernet packets
  53           using the SO_TIMESTAMPING API.
  54
  55           To compile this driver as a module, choose M here: the module
  56           will be called gianfar_ptp.
  57
  58 config PTP_1588_CLOCK_IXP46X
  59         tristate "Intel IXP46x as PTP clock"
  60         depends on IXP4XX_ETH
  61         depends on PTP_1588_CLOCK
  62         default y
  63         help
  64           This driver adds support for using the IXP46X as a PTP
  65           clock. This clock is only useful if your PTP programs are
  66           getting hardware time stamps on the PTP Ethernet packets
  67           using the SO_TIMESTAMPING API.
  68
  69           To compile this driver as a module, choose M here: the module
  70           will be called ptp_ixp46x.
  71
  72 comment "Enable PHYLIB and NETWORK_PHY_TIMESTAMPING to see the additional clocks."
  73         depends on PHYLIB=n || NETWORK_PHY_TIMESTAMPING=n
  74
  75 config DP83640_PHY
  76         tristate "Driver for the National Semiconductor DP83640 PHYTER"
  77         depends on NETWORK_PHY_TIMESTAMPING
  78         depends on PHYLIB
  79         depends on PTP_1588_CLOCK
  80         ---help---
  81           Supports the DP83640 PHYTER with IEEE 1588 features.
  82
  83           This driver adds support for using the DP83640 as a PTP
  84           clock. This clock is only useful if your PTP programs are
  85           getting hardware time stamps on the PTP Ethernet packets
  86           using the SO_TIMESTAMPING API.
  87
  88           In order for this to work, your MAC driver must also
  89           implement the skb_tx_timestamp() function.
  90
  91 config PTP_1588_CLOCK_PCH
  92         tristate "Intel PCH EG20T as PTP clock"
  93         depends on X86_32 || COMPILE_TEST
  94         depends on HAS_IOMEM && NET
  95         imply PTP_1588_CLOCK
  96         help
  97           This driver adds support for using the PCH EG20T as a PTP
  98           clock. The hardware supports time stamping of PTP packets
  99           when using the end-to-end delay (E2E) mechansim. The peer
 100           delay mechansim (P2P) is not supported.
 101
 102           This clock is only useful if your PTP programs are getting
 103           hardware time stamps on the PTP Ethernet packets using the
 104           SO_TIMESTAMPING API.
 105
 106           To compile this driver as a module, choose M here: the module
 107           will be called ptp_pch.
 108
 109 config PTP_1588_CLOCK_KVM
 110         tristate "KVM virtual PTP clock"
 111         depends on PTP_1588_CLOCK
 112         depends on KVM_GUEST && X86
 113         default y
 114         help
 115           This driver adds support for using kvm infrastructure as a PTP
 116           clock. This clock is only useful if you are using KVM guests.
 117
 118           To compile this driver as a module, choose M here: the module
 119           will be called ptp_kvm.
 120
 121 endmenu