Hi Miroslav, We use Synopsys's IP, the driver is the same as stmmac
file: stmicro/stmmac/stmmac_main.c function: static int stmmac_hwtstamp_set(struct net_device *dev, struct ifreq *ifr) 692 /* initialize system time */ * 693 ktime_get_real_ts64(&now);* 694 695 /* lower 32 bits of tv_sec are safe until y2106 */ * 696 stmmac_init_systime(priv, priv->ptpaddr, 697 (u32)now.tv_sec, now.tv_nsec);* Miroslav Lichvar <mlich...@redhat.com> 于2023年3月27日周一 16:20写道： > On Fri, Mar 24, 2023 at 03:46:49PM +0800, merlinhe wrote: > > > port.port_initialize()->transport_open()->raw_open()->sk_timestamping_init()->hwts_init()->*ioctl(fd, > > SIOCSHWTSTAMP)(eth driver set PHC to SYS(year 2000) in this ioctl)* > > That ioctl definitely shouldn't cause the PHC to be stepped. What > HW/driver is it? > > -- > Miroslav Lichvar > >
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