Re: [Linuxptp-users] PTP implementation on AM335x
Hello, How can get details on this ? I will be using HW time stamping at MAC layer at CPTS core for TI Chip. and linuxptp to synchronize clock between system clock and PTP hardware clock. Master clock is GPS receiver Regards, Hardik A Gohil On Tue, Nov 22, 2016 at 4:18 PM, Richard Cochran wrote: > On Tue, Nov 22, 2016 at 02:21:07PM +0800, Hardik Gohil wrote: > > what is the accuracy of time sync ?? > > It depends. > > Cheers, > Richard > -- ___ Linuxptp-users mailing list Linuxptp-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linuxptp-users
Re: [Linuxptp-users] PTP implementation on AM335x
On Tue, Nov 22, 2016 at 02:21:07PM +0800, Hardik Gohil wrote: > what is the accuracy of time sync ?? It depends. Cheers, Richard -- ___ Linuxptp-users mailing list Linuxptp-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linuxptp-users
Re: [Linuxptp-users] PTP implementation on AM335x
Hello, Thank you. so for HW time stamping at CPTS core I need to change kernel to 3.8 or later. what is the accuracy of time sync ?? Regards, Hardik A Gohil On Tue, Nov 22, 2016 at 2:18 AM, Richard Cochran wrote: > On Mon, Nov 21, 2016 at 10:13:32PM +0800, Hardik Gohil wrote: > > Does this means support is there from kernel 3.8 > > Yes. > > > Yes I have tried this method and posted the problem in previous message. > > You said you were running kernel 3.2. That won't work. Use kernel > 3.8 or later. > > BTW, the '-T' ethtool option only works on kernel 3.5 or later. > > HTH, > Richard > > -- ___ Linuxptp-users mailing list Linuxptp-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linuxptp-users
Re: [Linuxptp-users] PTP implementation on AM335x
On Mon, Nov 21, 2016 at 10:13:32PM +0800, Hardik Gohil wrote: > Does this means support is there from kernel 3.8 Yes. > Yes I have tried this method and posted the problem in previous message. You said you were running kernel 3.2. That won't work. Use kernel 3.8 or later. BTW, the '-T' ethtool option only works on kernel 3.5 or later. HTH, Richard -- ___ Linuxptp-users mailing list Linuxptp-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linuxptp-users
Re: [Linuxptp-users] PTP implementation on AM335x
On Nov 21, 2016 9:30 PM, "Richard Cochran" wrote: > > On Mon, Nov 21, 2016 at 02:20:46PM +0800, Hardik Gohil wrote: > > starting from which kernel version support is there ? > > Check out the driver support matrix at: > >http://linuxptp.sourceforge.net > > There you will find: > > | cpts | Texas Instruments am335x | 3.8 | > Does this means support is there from kernel 3.8 > This information is also in the README.org file. > > > how to confirm HW time stamping feature ? > > ethtool -T is a good start. Yes I have tried this method and posted the problem in previous message. > > HTH, > Richard -- ___ Linuxptp-users mailing list Linuxptp-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linuxptp-users
Re: [Linuxptp-users] PTP implementation on AM335x
On Mon, Nov 21, 2016 at 02:20:46PM +0800, Hardik Gohil wrote: > starting from which kernel version support is there ? Check out the driver support matrix at: http://linuxptp.sourceforge.net There you will find: | cpts | Texas Instruments am335x | 3.8 | This information is also in the README.org file. > how to confirm HW time stamping feature ? ethtool -T is a good start. HTH, Richard -- ___ Linuxptp-users mailing list Linuxptp-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linuxptp-users
