default or selected kernelversion does not have config value CONFIG_PTP_1588_CLOCK_TILEGX.
Result is shown for kernelversion 6.5.1

Tilera TILE-Gx mPIPE as PTP clock

configname: CONFIG_PTP_1588_CLOCK_TILEGX

Linux Kernel Configuration
└─>Device Drivers
└─>Network device support
└─>Ethernet driver support
└─>Tilera TILE-Gx mPIPE as PTP clock
In linux kernel since version 3.12 (release Date: 2013-11-03)  
This driver adds support for using the mPIPE 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.