Re: [Linuxptp-users] sanity_freq_limit

[Miroslav L. <mli...@re...>]

On Fri, Jun 19, 2015 at 09:08:56PM +0200, Richard Cochran wrote:
> On Fri, Jun 19, 2015 at 06:12:53PM +0000, Daniel Le wrote:
> > Thanks Miroslav and Jake.
> > 
> > I'm running linuxptp-1.4 and Linux kernel 2.6.35.7 with customization. My older linuxptp version has pi_f_offset_const instead of first_step_threshold, which I didn't alter.
> > 
> > I added debugging code to confirm that the step takes place, however unclear how things are afterward.
> 
> The issue is probably a bug in your backport of the PHC code, or in
> the backported MAC driver.

He has SW timestamping. Maybe the kernel is missing ADJ_SETOFFSET
support? It would explaing why the step doesn't work. It seems it
appeared in kernel 2.6.39.

-- 
Miroslav Lichvar