On Fri, Dec 11, 2020 at 03:49:36AM +0000, Brian.Hutchinson--- via Linuxptp-users wrote: > With the Sumo based version I could put scope probe in my imx8mm > 1PPS out and another probe on GM200 Sync out and the imx8mm 1pps > would closely track the GM. This new version ... not even close.
The PPS from imx8 is, IIRC, automatically generated by the kernel device driver. > I've stared at kernel configs, device tree, and tried all kinds of > stuff and nothing appears to make a difference. I'm stumped, got my > butt kicked, and looking for ideas on how to figure out what is > going on. I see 3.1 is out. I might try to cherry pick that just > for kicks to see if that makes a difference. The linuxptp program is not involved at all. > I'm using Freescale Community BSP with Poky. Kernel is 5.4.51. > Kernel config attached. If you are using a vendor kernel, then you are at their mercy. But the cause of the issue is surely differences in the device driver between the two kernel releases. > I'm still kind of new to 1588 so please be gentle 😉. (don't worry, we bark but we don't bite ;) Thanks, Richard _______________________________________________ Linuxptp-users mailing list Linuxptp-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linuxptp-users
