diff options
| author | Jacob Keller <jacob.e.keller@intel.com> | 2021-10-13 19:00:08 +0300 |
|---|---|---|
| committer | Tony Nguyen <anthony.l.nguyen@intel.com> | 2021-12-21 20:11:40 +0300 |
| commit | 13a64f0b9894886b2c08ab84de209735abf5a789 (patch) | |
| tree | 9a495900b982495823fa9ebf8e33c2c1fc107c73 /drivers/net/ethernet/intel/Kconfig | |
| parent | a69f1cb62aecedddaec445aff28f095793b1c28c (diff) | |
| download | linux-13a64f0b9894886b2c08ab84de209735abf5a789.tar.xz | |
ice: support crosstimestamping on E822 devices if supported
E822 devices on supported platforms can generate a cross timestamp
between the platform ART and the device time. This process allows for
very precise measurement of the difference between the PTP hardware
clock and the platform time.
This is only supported if we know the TSC frequency relative to ART, so
we do not enable this unless the boot CPU has a known TSC frequency (as
required by convert_art_ns_to_tsc).
Because PCIe PTM support is not available on all platforms, introduce
CONFIG_ICE_HWTS and make it depend on X86 where we know the support
exists.
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Gurucharan G <gurucharanx.g@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Diffstat (limited to 'drivers/net/ethernet/intel/Kconfig')
| -rw-r--r-- | drivers/net/ethernet/intel/Kconfig | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/net/ethernet/intel/Kconfig b/drivers/net/ethernet/intel/Kconfig index 0b274d8fa45b..3facb55b7161 100644 --- a/drivers/net/ethernet/intel/Kconfig +++ b/drivers/net/ethernet/intel/Kconfig @@ -327,6 +327,16 @@ config ICE_SWITCHDEV If unsure, say N. +config ICE_HWTS + bool "Support HW cross-timestamp on platforms with PTM support" + default y + depends on ICE && X86 + help + Say Y to enable hardware supported cross-timestamping on platforms + with PCIe PTM support. The cross-timestamp is available through + the PTP clock driver precise cross-timestamp ioctl + (PTP_SYS_OFFSET_PRECISE). + config FM10K tristate "Intel(R) FM10000 Ethernet Switch Host Interface Support" default n |