On Fri, 2019-08-23 at 07:15 +0000, Marco Spanghero wrote: > Hi, > I am trying to configure openwrt to use PTP for synchronization on a > Linksys WRT1200AC. I built my own openwrt image from master enabling > support for ptp and including ptp4l in the build. What I see by > testing the interfaces with ethtool is that there is still no support > for SOF_TIMESTAMPING_TX_SOFTWARE. Is this due to a problem in my > configuration or to missing support in the driver?
If ethtool -T does not report SOF_TIMESTAMPING_TX_SOFTWARE, that is because your driver needs to be updated. It must first make sure to properly call the software timestamping function, and second it must set the .get_ts_info to a function that reports software timestamping is enabled. > Here the page to OpenWRT directory: > https://openwrt.org/toh/linksys/linksys_wrt1200ac > Please advice on the information that you need to support me in > configuring the machine correctly. You may not get very good performance over wireless, because the software timestamps will not match up very well to when the hardware ends up transmitting the packets. It is likely for this reason that your driver does not enable software timestamping. Thanks, Jake _______________________________________________ Linuxptp-users mailing list Linuxptp-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linuxptp-users
