I have been working on a guide to using PTP on the CM4: https://github.com/jclark/rpi-cm4-ptp-guide
Fortunately, it is not necessary to recompile the kernel. You just need to make sure you use the 20220830 version of the kernel. You can do this by adding an apt pin. If you have already upgraded to a bad kernel, then you can download and install a good version from the raspberry pi archive. Details here: https://github.com/jclark/rpi-cm4-ptp-guide/blob/main/os.md This has now been fixed in the raspberrypi stable kernel: https://github.com/raspberrypi/linux/issues/5104#issuecomment-1304593383 so it should be in the next update. James On Wed, Nov 30, 2022 at 3:16 AM Maciek Machnikowski <mac...@machnikowski.net> wrote: > > > On 28 Nov 2022, at 23:30, Nemo Crypto <nemo0948.cry...@gmail.com> wrote: > > Hi All, > I found that Rasberry Pi CM4 has support for PTP timestamping. It has Gigabit > Ethernet PHY with IEEE 1588 support. > If anyone is using the same and running ptp4l on it, please respond. We > can collaborate. > Thanks :) > > > Linuxptp runs on RPi CM4 with HW timestamping support and 1PPS in/out. See > details in this thread: > https://github.com/raspberrypi/linux/issues/4151#issuecomment-1214951075 > > Bear in mind that this support was disabled in mainstream kernel and needs > kernel recompilation to enable it. > > Regards > Maciek > > On Monday, 28 November, 2022 at 12:00:03 pm GMT-5, Nemo Crypto < > nemo0948.cry...@gmail.com> wrote: > > > Hi Experts, > > I have experience developing/implementing the entire PTP stack (IEEE1588) > in a proprietary environment. So I am familiar with PTP, but I am new to > linuxPTP and would like to test/debug it on my own and looking for inputs > to proceed the right way. > > Anyone here have tried using/running linuxptp in Rasberry Pi or Auduino? > Or any other leads or better way to proceed is highly appreciated. > > _______________________________________________ > Linuxptp-users mailing list > Linuxptp-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/linuxptp-users > > > _______________________________________________ > Linuxptp-users mailing list > Linuxptp-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/linuxptp-users >
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