Re: [Linuxptp-users] PHC not being updated correctly

[prathosh s. <pra...@gm...>]

Hello Miroslav, thanks for your reply. I am using Microchip SAMA7G54, it is
an arm cortex A7-based MPU and it does have a PTP time stamping unit at the
MAC layer.

Enabled the hardware PTP support in the kernel by adding
MACB_CAPS_GEM_HAS_PTP and CONFIG_MACB_USE_HWTIMESTAMP.

Regards
Prathosh

On Tue 15 Nov 2022 at 1:27 p.m., Miroslav Lichvar <mli...@re...>
wrote:

> On Tue, Nov 15, 2022 at 12:58:53PM +0000, prathosh shastry wrote:
> > Hello team,
> >
> > I had no issue with using software time stamping and also I am able to
> see
> > the hardware timestamping support by building new kernel. But when I try
> to
> > use the PHC, I see the PHC clock not being updated correctly. I see only
> > the nSec bits being updated. Here are some of the tests I did.
> >
> > ---------------------
> > *root@sama7g5ek-sd:~# phc_ctl eth0 get*
> >
> > *phc_ctl[60533.796]: clock time is 1.010098874 or Thu Jan  1 00:00:01
> 1970*
>
> It's most likely a bug in the driver. What hardware are you using?
>
> --
> Miroslav Lichvar
>
>