On Wed, Apr 25, 2018 at 05:17:49PM +0800, Yangbo Lu wrote: > +/* PTP nominal frequency 1GHz */ > +#define DPAA2_PTP_NOMINAL_FREQ_PERIOD_NS 1 Nit: Frequency is the inverse of the period. It can be one or the other, not both. Why not call it simply DPAA2_PTP_CLK_PERIOD_NS? You haven't implemented the ethtool_get_ts_info() method, but you need to do so. Show us how the user can related these MAC time stamps to the PHC device in your other patch series. Thanks, Richard _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel