Driver for the National Semiconductor DP83640 PHYTER

modulename: dp83640.ko

configname: CONFIG_DP83640_PHY

Linux Kernel Configuration
└─>Device Drivers
└─>PTP clock support
└─>PHY Device support and infrastructure
└─>Driver for the National Semiconductor DP83640 PHYTER
In linux kernel since version 3 (release Date: 2011-07-21)  
Supports the DP83640 PHYTER with IEEE 1588 features.

This driver adds support for using the DP83640 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.

In order for this to work, your MAC driver must also
implement the skb_tx_timetamp() function.

source code: